chip8

A simple C CHIP8 VM.
git clone git://git.vgx.fr/chip8
Log | Files | Refs | README

commit 07a2504c60bb623d1db05d9ffa7eaec9ed009c3d
parent bc50fa7d1726b33c770a27dce33da5705059f340
Author: Léo Villeveygoux <l@vgx.fr>
Date:   Thu, 16 Apr 2020 01:11:09 +0200

Add buzzer to GLFW media with miniaudio

See https://miniaud.io/

Diffstat:
MMakefile | 4+++-
MREADME.md | 7+++++--
Aext/miniaudio.h | 42920+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mmedia-glfw.c | 74++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------
4 files changed, 42982 insertions(+), 23 deletions(-)

diff --git a/Makefile b/Makefile @@ -1,8 +1,10 @@ MEDIA=sdl +LIBS_MINIAUDIO=-ldl -lm -lpthread + LIBS_sdl=-lSDL2 LIBS_raylib=-lraylib -LIBS_glfw=-lglfw -lGLESv2 +LIBS_glfw=-lglfw -lGLESv2 ${LIBS_MINIAUDIO} LDLIBS=${LIBS_${MEDIA}} diff --git a/README.md b/README.md @@ -28,14 +28,17 @@ cc chip8.c media-raylib.c -o chip8 $(pkg-config --cflags --libs raylib) ~~~ Using [GLFW](https://www.glfw.org/) and -[OpenGL ES](https://www.khronos.org/opengles/) 2.0: +[OpenGL ES](https://www.khronos.org/opengles/) 2.0 for graphics rendering, +and [miniaudio](https://miniaud.io/) for the buzzer: ~~~sh # with GNU make make MEDIA=glfw # Or directly -cc chip8.c media-glfw.c -o chip8 -lglfw -lGLESv2 +# with "-lglfw -lGLESv2" for GLFW and OpenGL ES +# and "-ldl -lm -lpthread" for miniaudio on Linux +cc chip8.c media-glfw.c -o chip8 -lglfw -lGLESv2 -ldl -lm -lpthread ~~~ Run diff --git a/ext/miniaudio.h b/ext/miniaudio.h @@ -0,0 +1,42920 @@ +/* +Audio playback and capture library. Choice of public domain or MIT-0. See license statements at the end of this file. +miniaudio - v0.10.4 - 2020-04-12 + +David Reid - davidreidsoftware@gmail.com + +Website: https://miniaud.io +GitHub: https://github.com/dr-soft/miniaudio +*/ + +/* +RELEASE NOTES - VERSION 0.10.x +============================== +Version 0.10 includes major API changes and refactoring, mostly concerned with the data conversion system. Data conversion is performed internally to convert +audio data between the format requested when initializing the `ma_device` object and the format of the internal device used by the backend. The same applies +to the `ma_decoder` object. The previous design has several design flaws and missing features which necessitated a complete redesign. + + +Changes to Data Conversion +-------------------------- +The previous data conversion system used callbacks to deliver input data for conversion. This design works well in some specific situations, but in other +situations it has some major readability and maintenance issues. The decision was made to replace this with a more iterative approach where you just pass in a +pointer to the input data directly rather than dealing with a callback. + +The following are the data conversion APIs that have been removed and their replacements: + + - ma_format_converter -> ma_convert_pcm_frames_format() + - ma_channel_router -> ma_channel_converter + - ma_src -> ma_resampler + - ma_pcm_converter -> ma_data_converter + +The previous conversion APIs accepted a callback in their configs. There are no longer any callbacks to deal with. Instead you just pass the data into the +`*_process_pcm_frames()` function as a pointer to a buffer. + +The simplest aspect of data conversion is sample format conversion. To convert between two formats, just call `ma_convert_pcm_frames_format()`. Channel +conversion is also simple which you can do with `ma_channel_converter` via `ma_channel_converter_process_pcm_frames()`. + +Resampling is more complicated because the number of output frames that are processed is different to the number of input frames that are consumed. When you +call `ma_resampler_process_pcm_frames()` you need to pass in the number of input frames available for processing and the number of output frames you want to +output. Upon returning they will receive the number of input frames that were consumed and the number of output frames that were generated. + +The `ma_data_converter` API is a wrapper around format, channel and sample rate conversion and handles all of the data conversion you'll need which probably +makes it the best option if you need to do data conversion. + +In addition to changes to the API design, a few other changes have been made to the data conversion pipeline: + + - The sinc resampler has been removed. This was completely broken and never actually worked properly. + - The linear resampler now uses low-pass filtering to remove aliasing. The quality of the low-pass filter can be controlled via the resampler config with the + `lpfOrder` option, which has a maximum value of MA_MAX_FILTER_ORDER. + - Data conversion now supports s16 natively which runs through a fixed point pipeline. Previously everything needed to be converted to floating point before + processing, whereas now both s16 and f32 are natively supported. Other formats still require conversion to either s16 or f32 prior to processing, however + `ma_data_converter` will handle this for you. + + +Custom Memory Allocators +------------------------ +miniaudio has always supported macro level customization for memory allocation via MA_MALLOC, MA_REALLOC and MA_FREE, however some scenarios require more +flexibility by allowing a user data pointer to be passed to the custom allocation routines. Support for this has been added to version 0.10 via the +`ma_allocation_callbacks` structure. Anything making use of heap allocations has been updated to accept this new structure. + +The `ma_context_config` structure has been updated with a new member called `allocationCallbacks`. Leaving this set to it's defaults returned by +`ma_context_config_init()` will cause it to use MA_MALLOC, MA_REALLOC and MA_FREE. Likewise, The `ma_decoder_config` structure has been updated in the same +way, and leaving everything as-is after `ma_decoder_config_init()` will cause it to use the same defaults. + +The following APIs have been updated to take a pointer to a `ma_allocation_callbacks` object. Setting this parameter to NULL will cause it to use defaults. +Otherwise they will use the relevant callback in the structure. + + - ma_malloc() + - ma_realloc() + - ma_free() + - ma_aligned_malloc() + - ma_aligned_free() + - ma_rb_init() / ma_rb_init_ex() + - ma_pcm_rb_init() / ma_pcm_rb_init_ex() + +Note that you can continue to use MA_MALLOC, MA_REALLOC and MA_FREE as per normal. These will continue to be used by default if you do not specify custom +allocation callbacks. + + +Buffer and Period Configuration Changes +--------------------------------------- +The way in which the size of the internal buffer and periods are specified in the device configuration have changed. In previous versions, the config variables +`bufferSizeInFrames` and `bufferSizeInMilliseconds` defined the size of the entire buffer, with the size of a period being the size of this variable divided by +the period count. This became confusing because people would expect the value of `bufferSizeInFrames` or `bufferSizeInMilliseconds` to independantly determine +latency, when in fact it was that value divided by the period count that determined it. These variables have been removed and replaced with new ones called +`periodSizeInFrames` and `periodSizeInMilliseconds`. + +These new configuration variables work in the same way as their predecessors in that if one is set to 0, the other will be used, but the main difference is +that you now set these to you desired latency rather than the size of the entire buffer. The benefit of this is that it's much easier and less confusing to +configure latency. + +The following unused APIs have been removed: + + ma_get_default_buffer_size_in_milliseconds() + ma_get_default_buffer_size_in_frames() + +The following macros have been removed: + + MA_BASE_BUFFER_SIZE_IN_MILLISECONDS_LOW_LATENCY + MA_BASE_BUFFER_SIZE_IN_MILLISECONDS_CONSERVATIVE + + +Other API Changes +----------------- +Other less major API changes have also been made in version 0.10. + +`ma_device_set_stop_callback()` has been removed. If you require a stop callback, you must now set it via the device config just like the data callback. + +The `ma_sine_wave` API has been replaced with a more general API called `ma_waveform`. This supports generation of different types of waveforms, including +sine, square, triangle and sawtooth. Use `ma_waveform_init()` in place of `ma_sine_wave_init()` to initialize the waveform object. This takes a configuration +object called `ma_waveform_config` which defines the properties of the waveform. Use `ma_waveform_config_init()` to initialize a `ma_waveform_config` object. +Use `ma_waveform_read_pcm_frames()` in place of `ma_sine_wave_read_f32()` and `ma_sine_wave_read_f32_ex()`. + +`ma_convert_frames()` and `ma_convert_frames_ex()` have been changed. Both of these functions now take a new parameter called `frameCountOut` which specifies +the size of the output buffer in PCM frames. This has been added for safety. In addition to this, the parameters for `ma_convert_frames_ex()` have changed to +take a pointer to a `ma_data_converter_config` object to specify the input and output formats to convert between. This was done to make it more flexible, to +prevent the parameter list getting too long, and to prevent API breakage whenever a new conversion property is added. + +`ma_calculate_frame_count_after_src()` has been renamed to `ma_calculate_frame_count_after_resampling()` for consistency with the new `ma_resampler` API. + + +Filters +------- +The following filters have been added: + + |-------------|-------------------------------------------------------------------| + | API | Description | + |-------------|-------------------------------------------------------------------| + | ma_biquad | Biquad filter (transposed direct form 2) | + | ma_lpf1 | First order low-pass filter | + | ma_lpf2 | Second order low-pass filter | + | ma_lpf | High order low-pass filter (Butterworth) | + | ma_hpf1 | First order high-pass filter | + | ma_hpf2 | Second order high-pass filter | + | ma_hpf | High order high-pass filter (Butterworth) | + | ma_bpf2 | Second order band-pass filter | + | ma_bpf | High order band-pass filter | + | ma_peak2 | Second order peaking filter | + | ma_notch2 | Second order notching filter | + | ma_loshelf2 | Second order low shelf filter | + | ma_hishelf2 | Second order high shelf filter | + |-------------|-------------------------------------------------------------------| + +These filters all support 32-bit floating point and 16-bit signed integer formats natively. Other formats need to be converted beforehand. + + +Sine, Square, Triangle and Sawtooth Waveforms +--------------------------------------------- +Previously miniaudio supported only sine wave generation. This has now been generalized to support sine, square, triangle and sawtooth waveforms. The old +`ma_sine_wave` API has been removed and replaced with the `ma_waveform` API. Use `ma_waveform_config_init()` to initialize a config object, and then pass it +into `ma_waveform_init()`. Then use `ma_waveform_read_pcm_frames()` to read PCM data. + + +Noise Generation +---------------- +A noise generation API has been added. This is used via the `ma_noise` API. Currently white, pink and Brownian noise is supported. The `ma_noise` API is +similar to the waveform API. Use `ma_noise_config_init()` to initialize a config object, and then pass it into `ma_noise_init()` to initialize a `ma_noise` +object. Then use `ma_noise_read_pcm_frames()` to read PCM data. + + +Miscellaneous Changes +--------------------- +The MA_NO_STDIO option has been removed. This would disable file I/O APIs, however this has proven to be too hard to maintain for it's perceived value and was +therefore removed. + +Internal functions have all been made static where possible. If you get warnings about unused functions, please submit a bug report. + +The `ma_device` structure is no longer defined as being aligned to MA_SIMD_ALIGNMENT. This resulted in a possible crash when allocating a `ma_device` object on +the heap, but not aligning it to MA_SIMD_ALIGNMENT. This crash would happen due to the compiler seeing the alignment specified on the structure and assuming it +was always aligned as such and thinking it was safe to emit alignment-dependant SIMD instructions. Since miniaudio's philosophy is for things to just work, +this has been removed from all structures. + +Results codes have been overhauled. Unnecessary result codes have been removed, and some have been renumbered for organisation purposes. If you are are binding +maintainer you will need to update your result codes. Support has also been added for retrieving a human readable description of a given result code via the +`ma_result_description()` API. + +ALSA: The automatic format conversion, channel conversion and resampling performed by ALSA is now disabled by default as they were causing some compatibility +issues with certain devices and configurations. These can be individually enabled via the device config: + + ```c + deviceConfig.alsa.noAutoFormat = MA_TRUE; + deviceConfig.alsa.noAutoChannels = MA_TRUE; + deviceConfig.alsa.noAutoResample = MA_TRUE; + ``` +*/ + + +/* +Introduction +============ +miniaudio is a single file library for audio playback and capture. To use it, do the following in one .c file: + + ```c + #define MINIAUDIO_IMPLEMENTATION + #include "miniaudio.h + ``` + +You can #include miniaudio.h in other parts of the program just like any other header. + +miniaudio uses the concept of a "device" as the abstraction for physical devices. The idea is that you choose a physical device to emit or capture audio from, +and then move data to/from the device when miniaudio tells you to. Data is delivered to and from devices asynchronously via a callback which you specify when +initializing the device. + +When initializing the device you first need to configure it. The device configuration allows you to specify things like the format of the data delivered via +the callback, the size of the internal buffer and the ID of the device you want to emit or capture audio from. + +Once you have the device configuration set up you can initialize the device. When initializing a device you need to allocate memory for the device object +beforehand. This gives the application complete control over how the memory is allocated. In the example below we initialize a playback device on the stack, +but you could allocate it on the heap if that suits your situation better. + + ```c + void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount) + { + // In playback mode copy data to pOutput. In capture mode read data from pInput. In full-duplex mode, both pOutput and pInput will be valid and you can + // move data from pInput into pOutput. Never process more than frameCount frames. + } + + ... + + ma_device_config config = ma_device_config_init(ma_device_type_playback); + config.playback.format = MY_FORMAT; + config.playback.channels = MY_CHANNEL_COUNT; + config.sampleRate = MY_SAMPLE_RATE; + config.dataCallback = data_callback; + config.pUserData = pMyCustomData; // Can be accessed from the device object (device.pUserData). + + ma_device device; + if (ma_device_init(NULL, &config, &device) != MA_SUCCESS) { + ... An error occurred ... + } + + ma_device_start(&device); // The device is sleeping by default so you'll need to start it manually. + + ... + + ma_device_uninit(&device); // This will stop the device so no need to do that manually. + ``` + +In the example above, `data_callback()` is where audio data is written and read from the device. The idea is in playback mode you cause sound to be emitted +from the speakers by writing audio data to the output buffer (`pOutput` in the example). In capture mode you read data from the input buffer (`pInput`) to +extract sound captured by the microphone. The `frameCount` parameter tells you how many frames can be written to the output buffer and read from the input +buffer. A "frame" is one sample for each channel. For example, in a stereo stream (2 channels), one frame is 2 samples: one for the left, one for the right. +The channel count is defined by the device config. The size in bytes of an individual sample is defined by the sample format which is also specified in the +device config. Multi-channel audio data is always interleaved, which means the samples for each frame are stored next to each other in memory. For example, in +a stereo stream the first pair of samples will be the left and right samples for the first frame, the second pair of samples will be the left and right samples +for the second frame, etc. + +The configuration of the device is defined by the `ma_device_config` structure. The config object is always initialized with `ma_device_config_init()`. It's +important to always initialize the config with this function as it initializes it with logical defaults and ensures your program doesn't break when new members +are added to the `ma_device_config` structure. The example above uses a fairly simple and standard device configuration. The call to `ma_device_config_init()` +takes a single parameter, which is whether or not the device is a playback, capture, duplex or loopback device (loopback devices are not supported on all +backends). The `config.playback.format` member sets the sample format which can be one of the following (all formats are native-endian): + + |---------------|----------------------------------------|---------------------------| + | Symbol | Description | Range | + |---------------|----------------------------------------|---------------------------| + | ma_format_f32 | 32-bit floating point | [-1, 1] | + | ma_format_s16 | 16-bit signed integer | [-32768, 32767] | + | ma_format_s24 | 24-bit signed integer (tightly packed) | [-8388608, 8388607] | + | ma_format_s32 | 32-bit signed integer | [-2147483648, 2147483647] | + | ma_format_u8 | 8-bit unsigned integer | [0, 255] | + |---------------|----------------------------------------|---------------------------| + +The `config.playback.channels` member sets the number of channels to use with the device. The channel count cannot exceed MA_MAX_CHANNELS. The +`config.sampleRate` member sets the sample rate (which must be the same for both playback and capture in full-duplex configurations). This is usually set to +44100 or 48000, but can be set to anything. It's recommended to keep this between 8000 and 384000, however. + +Note that leaving the format, channel count and/or sample rate at their default values will result in the internal device's native configuration being used +which is useful if you want to avoid the overhead of miniaudio's automatic data conversion. + +In addition to the sample format, channel count and sample rate, the data callback and user data pointer are also set via the config. The user data pointer is +not passed into the callback as a parameter, but is instead set to the `pUserData` member of `ma_device` which you can access directly since all miniaudio +structures are transparent. + +Initializing the device is done with `ma_device_init()`. This will return a result code telling you what went wrong, if anything. On success it will return +`MA_SUCCESS`. After initialization is complete the device will be in a stopped state. To start it, use `ma_device_start()`. Uninitializing the device will stop +it, which is what the example above does, but you can also stop the device with `ma_device_stop()`. To resume the device simply call `ma_device_start()` again. +Note that it's important to never stop or start the device from inside the callback. This will result in a deadlock. Instead you set a variable or signal an +event indicating that the device needs to stop and handle it in a different thread. The following APIs must never be called inside the callback: + + ma_device_init() + ma_device_init_ex() + ma_device_uninit() + ma_device_start() + ma_device_stop() + +You must never try uninitializing and reinitializing a device inside the callback. You must also never try to stop and start it from inside the callback. There +are a few other things you shouldn't do in the callback depending on your requirements, however this isn't so much a thread-safety thing, but rather a real- +time processing thing which is beyond the scope of this introduction. + +The example above demonstrates the initialization of a playback device, but it works exactly the same for capture. All you need to do is change the device type +from `ma_device_type_playback` to `ma_device_type_capture` when setting up the config, like so: + + ```c + ma_device_config config = ma_device_config_init(ma_device_type_capture); + config.capture.format = MY_FORMAT; + config.capture.channels = MY_CHANNEL_COUNT; + ``` + +In the data callback you just read from the input buffer (`pInput` in the example above) and leave the output buffer alone (it will be set to NULL when the +device type is set to `ma_device_type_capture`). + +These are the available device types and how you should handle the buffers in the callback: + + |-------------------------|--------------------------------------------------------| + | Device Type | Callback Behavior | + |-------------------------|--------------------------------------------------------| + | ma_device_type_playback | Write to output buffer, leave input buffer untouched. | + | ma_device_type_capture | Read from input buffer, leave output buffer untouched. | + | ma_device_type_duplex | Read from input buffer, write to output buffer. | + | ma_device_type_loopback | Read from input buffer, leave output buffer untouched. | + |-------------------------|--------------------------------------------------------| + +You will notice in the example above that the sample format and channel count is specified separately for playback and capture. This is to support different +data formats between the playback and capture devices in a full-duplex system. An example may be that you want to capture audio data as a monaural stream (one +channel), but output sound to a stereo speaker system. Note that if you use different formats between playback and capture in a full-duplex configuration you +will need to convert the data yourself. There are functions available to help you do this which will be explained later. + +The example above did not specify a physical device to connect to which means it will use the operating system's default device. If you have multiple physical +devices connected and you want to use a specific one you will need to specify the device ID in the configuration, like so: + + ``` + config.playback.pDeviceID = pMyPlaybackDeviceID; // Only if requesting a playback or duplex device. + config.capture.pDeviceID = pMyCaptureDeviceID; // Only if requesting a capture, duplex or loopback device. + ``` + +To retrieve the device ID you will need to perform device enumeration, however this requires the use of a new concept called the "context". Conceptually +speaking the context sits above the device. There is one context to many devices. The purpose of the context is to represent the backend at a more global level +and to perform operations outside the scope of an individual device. Mainly it is used for performing run-time linking against backend libraries, initializing +backends and enumerating devices. The example below shows how to enumerate devices. + + ```c + ma_context context; + if (ma_context_init(NULL, 0, NULL, &context) != MA_SUCCESS) { + // Error. + } + + ma_device_info* pPlaybackDeviceInfos; + ma_uint32 playbackDeviceCount; + ma_device_info* pCaptureDeviceInfos; + ma_uint32 captureDeviceCount; + if (ma_context_get_devices(&context, &pPlaybackDeviceInfos, &playbackDeviceCount, &pCaptureDeviceInfos, &captureDeviceCount) != MA_SUCCESS) { + // Error. + } + + // Loop over each device info and do something with it. Here we just print the name with their index. You may want to give the user the + // opportunity to choose which device they'd prefer. + for (ma_uint32 iDevice = 0; iDevice < playbackDeviceCount; iDevice += 1) { + printf("%d - %s\n", iDevice, pPlaybackDeviceInfos[iDevice].name); + } + + ma_device_config config = ma_device_config_init(ma_device_type_playback); + config.playback.pDeviceID = &pPlaybackDeviceInfos[chosenPlaybackDeviceIndex].id; + config.playback.format = MY_FORMAT; + config.playback.channels = MY_CHANNEL_COUNT; + config.sampleRate = MY_SAMPLE_RATE; + config.dataCallback = data_callback; + config.pUserData = pMyCustomData; + + ma_device device; + if (ma_device_init(&context, &config, &device) != MA_SUCCESS) { + // Error + } + + ... + + ma_device_uninit(&device); + ma_context_uninit(&context); + ``` + +The first thing we do in this example is initialize a `ma_context` object with `ma_context_init()`. The first parameter is a pointer to a list of `ma_backend` +values which are used to override the default backend priorities. When this is NULL, as in this example, miniaudio's default priorities are used. The second +parameter is the number of backends listed in the array pointed to by the first parameter. The third parameter is a pointer to a `ma_context_config` object +which can be NULL, in which case defaults are used. The context configuration is used for setting the logging callback, custom memory allocation callbacks, +user-defined data and some backend-specific configurations. + +Once the context has been initialized you can enumerate devices. In the example above we use the simpler `ma_context_get_devices()`, however you can also use a +callback for handling devices by using `ma_context_enumerate_devices()`. When using `ma_context_get_devices()` you provide a pointer to a pointer that will, +upon output, be set to a pointer to a buffer containing a list of `ma_device_info` structures. You also provide a pointer to an unsigned integer that will +receive the number of items in the returned buffer. Do not free the returned buffers as their memory is managed internally by miniaudio. + +The `ma_device_info` structure contains an `id` member which is the ID you pass to the device config. It also contains the name of the device which is useful +for presenting a list of devices to the user via the UI. + +When creating your own context you will want to pass it to `ma_device_init()` when initializing the device. Passing in NULL, like we do in the first example, +will result in miniaudio creating the context for you, which you don't want to do since you've already created a context. Note that internally the context is +only tracked by it's pointer which means you must not change the location of the `ma_context` object. If this is an issue, consider using `malloc()` to +allocate memory for the context. + + + +Building +======== +miniaudio should work cleanly out of the box without the need to download or install any dependencies. See below for platform-specific details. + + +Windows +------- +The Windows build should compile cleanly on all popular compilers without the need to configure any include paths nor link to any libraries. + +macOS and iOS +------------- +The macOS build should compile cleanly without the need to download any dependencies nor link to any libraries or frameworks. The iOS build needs to be +compiled as Objective-C (sorry) and will need to link the relevant frameworks but should Just Work with Xcode. Compiling through the command line requires +linking to -lpthread and -lm. + +Linux +----- +The Linux build only requires linking to -ldl, -lpthread and -lm. You do not need any development packages. + +BSD +--- +The BSD build only requires linking to -lpthread and -lm. NetBSD uses audio(4), OpenBSD uses sndio and FreeBSD uses OSS. + +Android +------- +AAudio is the highest priority backend on Android. This should work out of the box without needing any kind of compiler configuration. Support for AAudio +starts with Android 8 which means older versions will fall back to OpenSL|ES which requires API level 16+. + +Emscripten +---------- +The Emscripten build emits Web Audio JavaScript directly and should Just Work without any configuration. You cannot use -std=c* compiler flags, nor -ansi. + + +Build Options +------------- +#define these options before including miniaudio.h. + +#define MA_NO_WASAPI + Disables the WASAPI backend. + +#define MA_NO_DSOUND + Disables the DirectSound backend. + +#define MA_NO_WINMM + Disables the WinMM backend. + +#define MA_NO_ALSA + Disables the ALSA backend. + +#define MA_NO_PULSEAUDIO + Disables the PulseAudio backend. + +#define MA_NO_JACK + Disables the JACK backend. + +#define MA_NO_COREAUDIO + Disables the Core Audio backend. + +#define MA_NO_SNDIO + Disables the sndio backend. + +#define MA_NO_AUDIO4 + Disables the audio(4) backend. + +#define MA_NO_OSS + Disables the OSS backend. + +#define MA_NO_AAUDIO + Disables the AAudio backend. + +#define MA_NO_OPENSL + Disables the OpenSL|ES backend. + +#define MA_NO_WEBAUDIO + Disables the Web Audio backend. + +#define MA_NO_NULL + Disables the null backend. + +#define MA_NO_DECODING + Disables the decoding APIs. + +#define MA_NO_DEVICE_IO + Disables playback and recording. This will disable ma_context and ma_device APIs. This is useful if you only want to use miniaudio's data conversion and/or + decoding APIs. + +#define MA_NO_SSE2 + Disables SSE2 optimizations. + +#define MA_NO_AVX2 + Disables AVX2 optimizations. + +#define MA_NO_AVX512 + Disables AVX-512 optimizations. + +#define MA_NO_NEON + Disables NEON optimizations. + +#define MA_LOG_LEVEL <Level> + Sets the logging level. Set level to one of the following: + MA_LOG_LEVEL_VERBOSE + MA_LOG_LEVEL_INFO + MA_LOG_LEVEL_WARNING + MA_LOG_LEVEL_ERROR + +#define MA_DEBUG_OUTPUT + Enable printf() debug output. + +#define MA_COINIT_VALUE + Windows only. The value to pass to internal calls to CoInitializeEx(). Defaults to COINIT_MULTITHREADED. + +#define MA_API + Controls how public APIs should be decorated. Defaults to `extern`. + +#define MA_DLL + If set, configures MA_API to either import or export APIs depending on whether or not the implementation is being defined. If defining the implementation, + MA_API will be configured to export. Otherwise it will be configured to import. This has no effect if MA_API is defined externally. + + + + +Definitions +=========== +This section defines common terms used throughout miniaudio. Unfortunately there is often ambiguity in the use of terms throughout the audio space, so this +section is intended to clarify how miniaudio uses each term. + +Sample +------ +A sample is a single unit of audio data. If the sample format is f32, then one sample is one 32-bit floating point number. + +Frame / PCM Frame +----------------- +A frame is a group of samples equal to the number of channels. For a stereo stream a frame is 2 samples, a mono frame is 1 sample, a 5.1 surround sound frame +is 6 samples, etc. The terms "frame" and "PCM frame" are the same thing in miniaudio. Note that this is different to a compressed frame. If ever miniaudio +needs to refer to a compressed frame, such as a FLAC frame, it will always clarify what it's referring to with something like "FLAC frame". + +Channel +------- +A stream of monaural audio that is emitted from an individual speaker in a speaker system, or received from an individual microphone in a microphone system. A +stereo stream has two channels (a left channel, and a right channel), a 5.1 surround sound system has 6 channels, etc. Some audio systems refer to a channel as +a complex audio stream that's mixed with other channels to produce the final mix - this is completely different to miniaudio's use of the term "channel" and +should not be confused. + +Sample Rate +----------- +The sample rate in miniaudio is always expressed in Hz, such as 44100, 48000, etc. It's the number of PCM frames that are processed per second. + +Formats +------- +Throughout miniaudio you will see references to different sample formats: + + |---------------|----------------------------------------|---------------------------| + | Symbol | Description | Range | + |---------------|----------------------------------------|---------------------------| + | ma_format_f32 | 32-bit floating point | [-1, 1] | + | ma_format_s16 | 16-bit signed integer | [-32768, 32767] | + | ma_format_s24 | 24-bit signed integer (tightly packed) | [-8388608, 8388607] | + | ma_format_s32 | 32-bit signed integer | [-2147483648, 2147483647] | + | ma_format_u8 | 8-bit unsigned integer | [0, 255] | + |---------------|----------------------------------------|---------------------------| + +All formats are native-endian. + + + +Decoding +======== +The `ma_decoder` API is used for reading audio files. To enable a decoder you must #include the header of the relevant backend library before the +implementation of miniaudio. You can find copies of these in the "extras" folder in the miniaudio repository (https://github.com/dr-soft/miniaudio). + +The table below are the supported decoding backends: + + |--------|-----------------| + | Type | Backend Library | + |--------|-----------------| + | WAV | dr_wav.h | + | FLAC | dr_flac.h | + | MP3 | dr_mp3.h | + | Vorbis | stb_vorbis.c | + |--------|-----------------| + +The code below is an example of how to enable decoding backends: + + ```c + #include "dr_flac.h" // Enables FLAC decoding. + #include "dr_mp3.h" // Enables MP3 decoding. + #include "dr_wav.h" // Enables WAV decoding. + + #define MINIAUDIO_IMPLEMENTATION + #include "miniaudio.h" + ``` + +A decoder can be initialized from a file with `ma_decoder_init_file()`, a block of memory with `ma_decoder_init_memory()`, or from data delivered via callbacks +with `ma_decoder_init()`. Here is an example for loading a decoder from a file: + + ```c + ma_decoder decoder; + ma_result result = ma_decoder_init_file("MySong.mp3", NULL, &decoder); + if (result != MA_SUCCESS) { + return false; // An error occurred. + } + + ... + + ma_decoder_uninit(&decoder); + ``` + +When initializing a decoder, you can optionally pass in a pointer to a ma_decoder_config object (the NULL argument in the example above) which allows you to +configure the output format, channel count, sample rate and channel map: + + ```c + ma_decoder_config config = ma_decoder_config_init(ma_format_f32, 2, 48000); + ``` + +When passing in NULL for decoder config in `ma_decoder_init*()`, the output format will be the same as that defined by the decoding backend. + +Data is read from the decoder as PCM frames: + + ```c + ma_uint64 framesRead = ma_decoder_read_pcm_frames(pDecoder, pFrames, framesToRead); + ``` + +You can also seek to a specific frame like so: + + ```c + ma_result result = ma_decoder_seek_to_pcm_frame(pDecoder, targetFrame); + if (result != MA_SUCCESS) { + return false; // An error occurred. + } + ``` + +When loading a decoder, miniaudio uses a trial and error technique to find the appropriate decoding backend. This can be unnecessarily inefficient if the type +is already known. In this case you can use the `_wav`, `_mp3`, etc. varients of the aforementioned initialization APIs: + + ```c + ma_decoder_init_wav() + ma_decoder_init_mp3() + ma_decoder_init_memory_wav() + ma_decoder_init_memory_mp3() + ma_decoder_init_file_wav() + ma_decoder_init_file_mp3() + etc. + ``` + +The `ma_decoder_init_file()` API will try using the file extension to determine which decoding backend to prefer. + + + +Encoding +======== +The `ma_encoding` API is used for writing audio files. To enable an encoder you must #include the header of the relevant backend library before the +implementation of miniaudio. You can find copies of these in the "extras" folder in the miniaudio repository (https://github.com/dr-soft/miniaudio). + +The table below are the supported encoding backends: + + |--------|-----------------| + | Type | Backend Library | + |--------|-----------------| + | WAV | dr_wav.h | + |--------|-----------------| + +The code below is an example of how to enable encoding backends: + + ```c + #include "dr_wav.h" // Enables WAV encoding. + + #define MINIAUDIO_IMPLEMENTATION + #include "miniaudio.h" + ``` + +An encoder can be initialized to write to a file with `ma_encoder_init_file()` or from data delivered via callbacks with `ma_encoder_init()`. Below is an +example for initializing an encoder to output to a file. + + ```c + ma_encoder_config config = ma_encoder_config_init(ma_resource_format_wav, FORMAT, CHANNELS, SAMPLE_RATE); + ma_encoder encoder; + ma_result result = ma_encoder_init_file("my_file.wav", &config, &encoder); + if (result != MA_SUCCESS) { + // Error + } + + ... + + ma_encoder_uninit(&encoder); + ``` + +When initializing an encoder you must specify a config which is initialized with `ma_encoder_config_init()`. Here you must specify the file type, the output +sample format, output channel count and output sample rate. The following file types are supported: + + |------------------------|-------------| + | Enum | Description | + |------------------------|-------------| + | ma_resource_format_wav | WAV | + |------------------------|-------------| + +If the format, channel count or sample rate is not supported by the output file type an error will be returned. The encoder will not perform data conversion so +you will need to convert it before outputting any audio data. To output audio data, use `ma_encoder_write_pcm_frames()`, like in the example below: + + ```c + framesWritten = ma_encoder_write_pcm_frames(&encoder, pPCMFramesToWrite, framesToWrite); + ``` + +Encoders must be uninitialized with `ma_encoder_uninit()`. + + + +Sample Format Conversion +======================== +Conversion between sample formats is achieved with the `ma_pcm_*_to_*()`, `ma_pcm_convert()` and `ma_convert_pcm_frames_format()` APIs. Use `ma_pcm_*_to_*()` +to convert between two specific formats. Use `ma_pcm_convert()` to convert based on a `ma_format` variable. Use `ma_convert_pcm_frames_format()` to convert +PCM frames where you want to specify the frame count and channel count as a variable instead of the total sample count. + +Dithering +--------- +Dithering can be set using the ditherMode parameter. + +The different dithering modes include the following, in order of efficiency: + + |-----------|--------------------------| + | Type | Enum Token | + |-----------|--------------------------| + | None | ma_dither_mode_none | + | Rectangle | ma_dither_mode_rectangle | + | Triangle | ma_dither_mode_triangle | + |-----------|--------------------------| + +Note that even if the dither mode is set to something other than `ma_dither_mode_none`, it will be ignored for conversions where dithering is not needed. +Dithering is available for the following conversions: + + s16 -> u8 + s24 -> u8 + s32 -> u8 + f32 -> u8 + s24 -> s16 + s32 -> s16 + f32 -> s16 + +Note that it is not an error to pass something other than ma_dither_mode_none for conversions where dither is not used. It will just be ignored. + + + +Channel Conversion +================== +Channel conversion is used for channel rearrangement and conversion from one channel count to another. The `ma_channel_converter` API is used for channel +conversion. Below is an example of initializing a simple channel converter which converts from mono to stereo. + + ```c + ma_channel_converter_config config = ma_channel_converter_config_init(ma_format, 1, NULL, 2, NULL, ma_channel_mix_mode_default, NULL); + result = ma_channel_converter_init(&config, &converter); + if (result != MA_SUCCESS) { + // Error. + } + ``` + +To perform the conversion simply call `ma_channel_converter_process_pcm_frames()` like so: + + ```c + ma_result result = ma_channel_converter_process_pcm_frames(&converter, pFramesOut, pFramesIn, frameCount); + if (result != MA_SUCCESS) { + // Error. + } + ``` + +It is up to the caller to ensure the output buffer is large enough to accomodate the new PCM frames. + +The only formats supported are `ma_format_s16` and `ma_format_f32`. If you need another format you need to convert your data manually which you can do with +`ma_pcm_convert()`, etc. + +Input and output PCM frames are always interleaved. Deinterleaved layouts are not supported. + + +Channel Mapping +--------------- +In addition to converting from one channel count to another, like the example above, The channel converter can also be used to rearrange channels. When +initializing the channel converter, you can optionally pass in channel maps for both the input and output frames. If the channel counts are the same, and each +channel map contains the same channel positions with the exception that they're in a different order, a simple shuffling of the channels will be performed. If, +however, there is not a 1:1 mapping of channel positions, or the channel counts differ, the input channels will be mixed based on a mixing mode which is +specified when initializing the `ma_channel_converter_config` object. + +When converting from mono to multi-channel, the mono channel is simply copied to each output channel. When going the other way around, the audio of each output +channel is simply averaged and copied to the mono channel. + +In more complicated cases blending is used. The `ma_channel_mix_mode_simple` mode will drop excess channels and silence extra channels. For example, converting +from 4 to 2 channels, the 3rd and 4th channels will be dropped, whereas converting from 2 to 4 channels will put silence into the 3rd and 4th channels. + +The `ma_channel_mix_mode_rectangle` mode uses spacial locality based on a rectangle to compute a simple distribution between input and output. Imagine sitting +in the middle of a room, with speakers on the walls representing channel positions. The MA_CHANNEL_FRONT_LEFT position can be thought of as being in the corner +of the front and left walls. + +Finally, the `ma_channel_mix_mode_custom_weights` mode can be used to use custom user-defined weights. Custom weights can be passed in as the last parameter of +`ma_channel_converter_config_init()`. + +Predefined channel maps can be retrieved with `ma_get_standard_channel_map()`. This takes a `ma_standard_channel_map` enum as it's first parameter, which can +be one of the following: + + |-----------------------------------|-----------------------------------------------------------| + | Name | Description | + |-----------------------------------|-----------------------------------------------------------| + | ma_standard_channel_map_default | Default channel map used by miniaudio. See below. | + | ma_standard_channel_map_microsoft | Channel map used by Microsoft's bitfield channel maps. | + | ma_standard_channel_map_alsa | Default ALSA channel map. | + | ma_standard_channel_map_rfc3551 | RFC 3551. Based on AIFF. | + | ma_standard_channel_map_flac | FLAC channel map. | + | ma_standard_channel_map_vorbis | Vorbis channel map. | + | ma_standard_channel_map_sound4 | FreeBSD's sound(4). | + | ma_standard_channel_map_sndio | sndio channel map. www.sndio.org/tips.html | + | ma_standard_channel_map_webaudio | https://webaudio.github.io/web-audio-api/#ChannelOrdering | + |-----------------------------------|-----------------------------------------------------------| + +Below are the channel maps used by default in miniaudio (ma_standard_channel_map_default): + + |---------------|------------------------------| + | Channel Count | Mapping | + |---------------|------------------------------| + | 1 (Mono) | 0: MA_CHANNEL_MONO | + |---------------|------------------------------| + | 2 (Stereo) | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + |---------------|------------------------------| + | 3 | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + | | 2: MA_CHANNEL_FRONT_CENTER | + |---------------|------------------------------| + | 4 (Surround) | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + | | 2: MA_CHANNEL_FRONT_CENTER | + | | 3: MA_CHANNEL_BACK_CENTER | + |---------------|------------------------------| + | 5 | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + | | 2: MA_CHANNEL_FRONT_CENTER | + | | 3: MA_CHANNEL_BACK_LEFT | + | | 4: MA_CHANNEL_BACK_RIGHT | + |---------------|------------------------------| + | 6 (5.1) | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + | | 2: MA_CHANNEL_FRONT_CENTER | + | | 3: MA_CHANNEL_LFE | + | | 4: MA_CHANNEL_SIDE_LEFT | + | | 5: MA_CHANNEL_SIDE_RIGHT | + |---------------|------------------------------| + | 7 | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + | | 2: MA_CHANNEL_FRONT_CENTER | + | | 3: MA_CHANNEL_LFE | + | | 4: MA_CHANNEL_BACK_CENTER | + | | 4: MA_CHANNEL_SIDE_LEFT | + | | 5: MA_CHANNEL_SIDE_RIGHT | + |---------------|------------------------------| + | 8 (7.1) | 0: MA_CHANNEL_FRONT_LEFT | + | | 1: MA_CHANNEL_FRONT_RIGHT | + | | 2: MA_CHANNEL_FRONT_CENTER | + | | 3: MA_CHANNEL_LFE | + | | 4: MA_CHANNEL_BACK_LEFT | + | | 5: MA_CHANNEL_BACK_RIGHT | + | | 6: MA_CHANNEL_SIDE_LEFT | + | | 7: MA_CHANNEL_SIDE_RIGHT | + |---------------|------------------------------| + | Other | All channels set to 0. This | + | | is equivalent to the same | + | | mapping as the device. | + |---------------|------------------------------| + + + +Resampling +========== +Resampling is achieved with the `ma_resampler` object. To create a resampler object, do something like the following: + + ```c + ma_resampler_config config = ma_resampler_config_init(ma_format_s16, channels, sampleRateIn, sampleRateOut, ma_resample_algorithm_linear); + ma_resampler resampler; + ma_result result = ma_resampler_init(&config, &resampler); + if (result != MA_SUCCESS) { + // An error occurred... + } + ``` + +Do the following to uninitialize the resampler: + + ```c + ma_resampler_uninit(&resampler); + ``` + +The following example shows how data can be processed + + ```c + ma_uint64 frameCountIn = 1000; + ma_uint64 frameCountOut = 2000; + ma_result result = ma_resampler_process_pcm_frames(&resampler, pFramesIn, &frameCountIn, pFramesOut, &frameCountOut); + if (result != MA_SUCCESS) { + // An error occurred... + } + + // At this point, frameCountIn contains the number of input frames that were consumed and frameCountOut contains the number of output frames written. + ``` + +To initialize the resampler you first need to set up a config (`ma_resampler_config`) with `ma_resampler_config_init()`. You need to specify the sample format +you want to use, the number of channels, the input and output sample rate, and the algorithm. + +The sample format can be either `ma_format_s16` or `ma_format_f32`. If you need a different format you will need to perform pre- and post-conversions yourself +where necessary. Note that the format is the same for both input and output. The format cannot be changed after initialization. + +The resampler supports multiple channels and is always interleaved (both input and output). The channel count cannot be changed after initialization. + +The sample rates can be anything other than zero, and are always specified in hertz. They should be set to something like 44100, etc. The sample rate is the +only configuration property that can be changed after initialization. + +The miniaudio resampler supports multiple algorithms: + + |-----------|------------------------------| + | Algorithm | Enum Token | + |-----------|------------------------------| + | Linear | ma_resample_algorithm_linear | + | Speex | ma_resample_algorithm_speex | + |-----------|------------------------------| + +Because Speex is not public domain it is strictly opt-in and the code is stored in separate files. if you opt-in to the Speex backend you will need to consider +it's license, the text of which can be found in it's source files in "extras/speex_resampler". Details on how to opt-in to the Speex resampler is explained in +the Speex Resampler section below. + +The algorithm cannot be changed after initialization. + +Processing always happens on a per PCM frame basis and always assumes interleaved input and output. De-interleaved processing is not supported. To process +frames, use `ma_resampler_process_pcm_frames()`. On input, this function takes the number of output frames you can fit in the output buffer and the number of +input frames contained in the input buffer. On output these variables contain the number of output frames that were written to the output buffer and the +number of input frames that were consumed in the process. You can pass in NULL for the input buffer in which case it will be treated as an infinitely large +buffer of zeros. The output buffer can also be NULL, in which case the processing will be treated as seek. + +The sample rate can be changed dynamically on the fly. You can change this with explicit sample rates with `ma_resampler_set_rate()` and also with a decimal +ratio with `ma_resampler_set_rate_ratio()`. The ratio is in/out. + +Sometimes it's useful to know exactly how many input frames will be required to output a specific number of frames. You can calculate this with +`ma_resampler_get_required_input_frame_count()`. Likewise, it's sometimes useful to know exactly how many frames would be output given a certain number of +input frames. You can do this with `ma_resampler_get_expected_output_frame_count()`. + +Due to the nature of how resampling works, the resampler introduces some latency. This can be retrieved in terms of both the input rate and the output rate +with `ma_resampler_get_input_latency()` and `ma_resampler_get_output_latency()`. + + +Resampling Algorithms +--------------------- +The choice of resampling algorithm depends on your situation and requirements. The linear resampler is the most efficient and has the least amount of latency, +but at the expense of poorer quality. The Speex resampler is higher quality, but slower with more latency. It also performs several heap allocations internally +for memory management. + + +Linear Resampling +----------------- +The linear resampler is the fastest, but comes at the expense of poorer quality. There is, however, some control over the quality of the linear resampler which +may make it a suitable option depending on your requirements. + +The linear resampler performs low-pass filtering before or after downsampling or upsampling, depending on the sample rates you're converting between. When +decreasing the sample rate, the low-pass filter will be applied before downsampling. When increasing the rate it will be performed after upsampling. By default +a fourth order low-pass filter will be applied. This can be configured via the `lpfOrder` configuration variable. Setting this to 0 will disable filtering. + +The low-pass filter has a cutoff frequency which defaults to half the sample rate of the lowest of the input and output sample rates (Nyquist Frequency). This +can be controlled with the `lpfNyquistFactor` config variable. This defaults to 1, and should be in the range of 0..1, although a value of 0 does not make +sense and should be avoided. A value of 1 will use the Nyquist Frequency as the cutoff. A value of 0.5 will use half the Nyquist Frequency as the cutoff, etc. +Values less than 1 will result in more washed out sound due to more of the higher frequencies being removed. This config variable has no impact on performance +and is a purely perceptual configuration. + +The API for the linear resampler is the same as the main resampler API, only it's called `ma_linear_resampler`. + + +Speex Resampling +---------------- +The Speex resampler is made up of third party code which is released under the BSD license. Because it is licensed differently to miniaudio, which is public +domain, it is strictly opt-in and all of it's code is stored in separate files. If you opt-in to the Speex resampler you must consider the license text in it's +source files. To opt-in, you must first #include the following file before the implementation of miniaudio.h: + + #include "extras/speex_resampler/ma_speex_resampler.h" + +Both the header and implementation is contained within the same file. The implementation can be included in your program like so: + + #define MINIAUDIO_SPEEX_RESAMPLER_IMPLEMENTATION + #include "extras/speex_resampler/ma_speex_resampler.h" + +Note that even if you opt-in to the Speex backend, miniaudio won't use it unless you explicitly ask for it in the respective config of the object you are +initializing. If you try to use the Speex resampler without opting in, initialization of the `ma_resampler` object will fail with `MA_NO_BACKEND`. + +The only configuration option to consider with the Speex resampler is the `speex.quality` config variable. This is a value between 0 and 10, with 0 being +the fastest with the poorest quality and 10 being the slowest with the highest quality. The default value is 3. + + + +General Data Conversion +======================= +The `ma_data_converter` API can be used to wrap sample format conversion, channel conversion and resampling into one operation. This is what miniaudio uses +internally to convert between the format requested when the device was initialized and the format of the backend's native device. The API for general data +conversion is very similar to the resampling API. Create a `ma_data_converter` object like this: + + ```c + ma_data_converter_config config = ma_data_converter_config_init(inputFormat, outputFormat, inputChannels, outputChannels, inputSampleRate, outputSampleRate); + ma_data_converter converter; + ma_result result = ma_data_converter_init(&config, &converter); + if (result != MA_SUCCESS) { + // An error occurred... + } + ``` + +In the example above we use `ma_data_converter_config_init()` to initialize the config, however there's many more properties that can be configured, such as +channel maps and resampling quality. Something like the following may be more suitable depending on your requirements: + + ```c + ma_data_converter_config config = ma_data_converter_config_init_default(); + config.formatIn = inputFormat; + config.formatOut = outputFormat; + config.channelsIn = inputChannels; + config.channelsOut = outputChannels; + config.sampleRateIn = inputSampleRate; + config.sampleRateOut = outputSampleRate; + ma_get_standard_channel_map(ma_standard_channel_map_flac, config.channelCountIn, config.channelMapIn); + config.resampling.linear.lpfOrder = MA_MAX_FILTER_ORDER; + ``` + +Do the following to uninitialize the data converter: + + ```c + ma_data_converter_uninit(&converter); + ``` + +The following example shows how data can be processed + + ```c + ma_uint64 frameCountIn = 1000; + ma_uint64 frameCountOut = 2000; + ma_result result = ma_data_converter_process_pcm_frames(&converter, pFramesIn, &frameCountIn, pFramesOut, &frameCountOut); + if (result != MA_SUCCESS) { + // An error occurred... + } + + // At this point, frameCountIn contains the number of input frames that were consumed and frameCountOut contains the number of output frames written. + ``` + +The data converter supports multiple channels and is always interleaved (both input and output). The channel count cannot be changed after initialization. + +Sample rates can be anything other than zero, and are always specified in hertz. They should be set to something like 44100, etc. The sample rate is the only +configuration property that can be changed after initialization, but only if the `resampling.allowDynamicSampleRate` member of `ma_data_converter_config` is +set to MA_TRUE. To change the sample rate, use `ma_data_converter_set_rate()` or `ma_data_converter_set_rate_ratio()`. The ratio must be in/out. The resampling +algorithm cannot be changed after initialization. + +Processing always happens on a per PCM frame basis and always assumes interleaved input and output. De-interleaved processing is not supported. To process +frames, use `ma_data_converter_process_pcm_frames()`. On input, this function takes the number of output frames you can fit in the output buffer and the number +of input frames contained in the input buffer. On output these variables contain the number of output frames that were written to the output buffer and the +number of input frames that were consumed in the process. You can pass in NULL for the input buffer in which case it will be treated as an infinitely large +buffer of zeros. The output buffer can also be NULL, in which case the processing will be treated as seek. + +Sometimes it's useful to know exactly how many input frames will be required to output a specific number of frames. You can calculate this with +`ma_data_converter_get_required_input_frame_count()`. Likewise, it's sometimes useful to know exactly how many frames would be output given a certain number of +input frames. You can do this with `ma_data_converter_get_expected_output_frame_count()`. + +Due to the nature of how resampling works, the data converter introduces some latency if resampling is required. This can be retrieved in terms of both the +input rate and the output rate with `ma_data_converter_get_input_latency()` and `ma_data_converter_get_output_latency()`. + + + +Filtering +========= + +Biquad Filtering +---------------- +Biquad filtering is achieved with the `ma_biquad` API. Example: + + ```c + ma_biquad_config config = ma_biquad_config_init(ma_format_f32, channels, b0, b1, b2, a0, a1, a2); + ma_result result = ma_biquad_init(&config, &biquad); + if (result != MA_SUCCESS) { + // Error. + } + + ... + + ma_biquad_process_pcm_frames(&biquad, pFramesOut, pFramesIn, frameCount); + ``` + +Biquad filtering is implemented using transposed direct form 2. The numerator coefficients are b0, b1 and b2, and the denominator coefficients are a0, a1 and +a2. The a0 coefficient is required and coefficients must not be pre-normalized. + +Supported formats are `ma_format_s16` and `ma_format_f32`. If you need to use a different format you need to convert it yourself beforehand. When using +`ma_format_s16` the biquad filter will use fixed point arithmetic. When using `ma_format_f32`, floating point arithmetic will be used. + +Input and output frames are always interleaved. + +Filtering can be applied in-place by passing in the same pointer for both the input and output buffers, like so: + + ```c + ma_biquad_process_pcm_frames(&biquad, pMyData, pMyData, frameCount); + ``` + +If you need to change the values of the coefficients, but maintain the values in the registers you can do so with `ma_biquad_reinit()`. This is useful if you +need to change the properties of the filter while keeping the values of registers valid to avoid glitching. Do not use `ma_biquad_init()` for this as it will +do a full initialization which involves clearing the registers to 0. Note that changing the format or channel count after initialization is invalid and will +result in an error. + + +Low-Pass Filtering +------------------ +Low-pass filtering is achieved with the following APIs: + + |---------|------------------------------------------| + | API | Description | + |---------|------------------------------------------| + | ma_lpf1 | First order low-pass filter | + | ma_lpf2 | Second order low-pass filter | + | ma_lpf | High order low-pass filter (Butterworth) | + |---------|------------------------------------------| + +Low-pass filter example: + + ```c + ma_lpf_config config = ma_lpf_config_init(ma_format_f32, channels, sampleRate, cutoffFrequency, order); + ma_result result = ma_lpf_init(&config, &lpf); + if (result != MA_SUCCESS) { + // Error. + } + + ... + + ma_lpf_process_pcm_frames(&lpf, pFramesOut, pFramesIn, frameCount); + ``` + +Supported formats are `ma_format_s16` and` ma_format_f32`. If you need to use a different format you need to convert it yourself beforehand. Input and output +frames are always interleaved. + +Filtering can be applied in-place by passing in the same pointer for both the input and output buffers, like so: + + ```c + ma_lpf_process_pcm_frames(&lpf, pMyData, pMyData, frameCount); + ``` + +The maximum filter order is limited to MA_MAX_FILTER_ORDER which is set to 8. If you need more, you can chain first and second order filters together. + + ```c + for (iFilter = 0; iFilter < filterCount; iFilter += 1) { + ma_lpf2_process_pcm_frames(&lpf2[iFilter], pMyData, pMyData, frameCount); + } + ``` + +If you need to change the configuration of the filter, but need to maintain the state of internal registers you can do so with `ma_lpf_reinit()`. This may be +useful if you need to change the sample rate and/or cutoff frequency dynamically while maintaing smooth transitions. Note that changing the format or channel +count after initialization is invalid and will result in an error. + +The `ma_lpf` object supports a configurable order, but if you only need a first order filter you may want to consider using `ma_lpf1`. Likewise, if you only +need a second order filter you can use `ma_lpf2`. The advantage of this is that they're lighter weight and a bit more efficient. + +If an even filter order is specified, a series of second order filters will be processed in a chain. If an odd filter order is specified, a first order filter +will be applied, followed by a series of second order filters in a chain. + + +High-Pass Filtering +------------------- +High-pass filtering is achieved with the following APIs: + + |---------|-------------------------------------------| + | API | Description | + |---------|-------------------------------------------| + | ma_hpf1 | First order high-pass filter | + | ma_hpf2 | Second order high-pass filter | + | ma_hpf | High order high-pass filter (Butterworth) | + |---------|-------------------------------------------| + +High-pass filters work exactly the same as low-pass filters, only the APIs are called `ma_hpf1`, `ma_hpf2` and `ma_hpf`. See example code for low-pass filters +for example usage. + + +Band-Pass Filtering +------------------- +Band-pass filtering is achieved with the following APIs: + + |---------|-------------------------------| + | API | Description | + |---------|-------------------------------| + | ma_bpf2 | Second order band-pass filter | + | ma_bpf | High order band-pass filter | + |---------|-------------------------------| + +Band-pass filters work exactly the same as low-pass filters, only the APIs are called `ma_bpf2` and `ma_hpf`. See example code for low-pass filters for example +usage. Note that the order for band-pass filters must be an even number which means there is no first order band-pass filter, unlike low-pass and high-pass +filters. + + +Notch Filtering +--------------- +Notch filtering is achieved with the following APIs: + + |-----------|------------------------------------------| + | API | Description | + |-----------|------------------------------------------| + | ma_notch2 | Second order notching filter | + |-----------|------------------------------------------| + + +Peaking EQ Filtering +-------------------- +Peaking filtering is achieved with the following APIs: + + |----------|------------------------------------------| + | API | Description | + |----------|------------------------------------------| + | ma_peak2 | Second order peaking filter | + |----------|------------------------------------------| + + +Low Shelf Filtering +------------------- +Low shelf filtering is achieved with the following APIs: + + |-------------|------------------------------------------| + | API | Description | + |-------------|------------------------------------------| + | ma_loshelf2 | Second order low shelf filter | + |-------------|------------------------------------------| + +Where a high-pass filter is used to eliminate lower frequencies, a low shelf filter can be used to just turn them down rather than eliminate them entirely. + + +High Shelf Filtering +-------------------- +High shelf filtering is achieved with the following APIs: + + |-------------|------------------------------------------| + | API | Description | + |-------------|------------------------------------------| + | ma_hishelf2 | Second order high shelf filter | + |-------------|------------------------------------------| + +The high shelf filter has the same API as the low shelf filter, only you would use `ma_hishelf` instead of `ma_loshelf`. Where a low shelf filter is used to +adjust the volume of low frequencies, the high shelf filter does the same thing for high frequencies. + + + + +Waveform and Noise Generation +============================= + +Waveforms +--------- +miniaudio supports generation of sine, square, triangle and sawtooth waveforms. This is achieved with the `ma_waveform` API. Example: + + ```c + ma_waveform_config config = ma_waveform_config_init(FORMAT, CHANNELS, SAMPLE_RATE, ma_waveform_type_sine, amplitude, frequency); + + ma_waveform waveform; + ma_result result = ma_waveform_init(&config, &waveform); + if (result != MA_SUCCESS) { + // Error. + } + + ... + + ma_waveform_read_pcm_frames(&waveform, pOutput, frameCount); + ``` + +The amplitude, frequency and sample rate can be changed dynamically with `ma_waveform_set_amplitude()`, `ma_waveform_set_frequency()` and +`ma_waveform_set_sample_rate()` respectively. + +You can reverse the waveform by setting the amplitude to a negative value. You can use this to control whether or not a sawtooth has a positive or negative +ramp, for example. + +Below are the supported waveform types: + + |---------------------------| + | Enum Name | + |---------------------------| + | ma_waveform_type_sine | + | ma_waveform_type_square | + | ma_waveform_type_triangle | + | ma_waveform_type_sawtooth | + |---------------------------| + + + +Noise +----- +miniaudio supports generation of white, pink and brownian noise via the `ma_noise` API. Example: + + ```c + ma_noise_config config = ma_noise_config_init(FORMAT, CHANNELS, ma_noise_type_white, SEED, amplitude); + + ma_noise noise; + ma_result result = ma_noise_init(&config, &noise); + if (result != MA_SUCCESS) { + // Error. + } + + ... + + ma_noise_read_pcm_frames(&noise, pOutput, frameCount); + ``` + +The noise API uses simple LCG random number generation. It supports a custom seed which is useful for things like automated testing requiring reproducibility. +Setting the seed to zero will default to MA_DEFAULT_LCG_SEED. + +By default, the noise API will use different values for different channels. So, for example, the left side in a stereo stream will be different to the right +side. To instead have each channel use the same random value, set the `duplicateChannels` member of the noise config to true, like so: + + ```c + config.duplicateChannels = MA_TRUE; + ``` + +Below are the supported noise types. + + |------------------------| + | Enum Name | + |------------------------| + | ma_noise_type_white | + | ma_noise_type_pink | + | ma_noise_type_brownian | + |------------------------| + + + +Ring Buffers +============ +miniaudio supports lock free (single producer, single consumer) ring buffers which are exposed via the `ma_rb` and `ma_pcm_rb` APIs. The `ma_rb` API operates +on bytes, whereas the `ma_pcm_rb` operates on PCM frames. They are otherwise identical as `ma_pcm_rb` is just a wrapper around `ma_rb`. + +Unlike most other APIs in miniaudio, ring buffers support both interleaved and deinterleaved streams. The caller can also allocate their own backing memory for +the ring buffer to use internally for added flexibility. Otherwise the ring buffer will manage it's internal memory for you. + +The examples below use the PCM frame variant of the ring buffer since that's most likely the one you will want to use. To initialize a ring buffer, do +something like the following: + + ```c + ma_pcm_rb rb; + ma_result result = ma_pcm_rb_init(FORMAT, CHANNELS, BUFFER_SIZE_IN_FRAMES, NULL, NULL, &rb); + if (result != MA_SUCCESS) { + // Error + } + ``` + +The `ma_pcm_rb_init()` function takes the sample format and channel count as parameters because it's the PCM varient of the ring buffer API. For the regular +ring buffer that operates on bytes you would call `ma_rb_init()` which leaves these out and just takes the size of the buffer in bytes instead of frames. The +fourth parameter is an optional pre-allocated buffer and the fifth parameter is a pointer to a `ma_allocation_callbacks` structure for custom memory allocation +routines. Passing in NULL for this results in MA_MALLOC() and MA_FREE() being used. + +Use `ma_pcm_rb_init_ex()` if you need a deinterleaved buffer. The data for each sub-buffer is offset from each other based on the stride. To manage your sub- +buffers you can use `ma_pcm_rb_get_subbuffer_stride()`, `ma_pcm_rb_get_subbuffer_offset()` and `ma_pcm_rb_get_subbuffer_ptr()`. + +Use 'ma_pcm_rb_acquire_read()` and `ma_pcm_rb_acquire_write()` to retrieve a pointer to a section of the ring buffer. You specify the number of frames you +need, and on output it will set to what was actually acquired. If the read or write pointer is positioned such that the number of frames requested will require +a loop, it will be clamped to the end of the buffer. Therefore, the number of frames you're given may be less than the number you requested. + +After calling `ma_pcm_rb_acquire_read()` or `ma_pcm_rb_acquire_write()`, you do your work on the buffer and then "commit" it with `ma_pcm_rb_commit_read()` or +`ma_pcm_rb_commit_write()`. This is where the read/write pointers are updated. When you commit you need to pass in the buffer that was returned by the earlier +call to `ma_pcm_rb_acquire_read()` or `ma_pcm_rb_acquire_write()` and is only used for validation. The number of frames passed to `ma_pcm_rb_commit_read()` and +`ma_pcm_rb_commit_write()` is what's used to increment the pointers. + +If you want to correct for drift between the write pointer and the read pointer you can use a combination of `ma_pcm_rb_pointer_distance()`, +`ma_pcm_rb_seek_read()` and `ma_pcm_rb_seek_write()`. Note that you can only move the pointers forward, and you should only move the read pointer forward via +the consumer thread, and the write pointer forward by the producer thread. If there is too much space between the pointers, move the read pointer forward. If +there is too little space between the pointers, move the write pointer forward. + +You can use a ring buffer at the byte level instead of the PCM frame level by using the `ma_rb` API. This is exactly the sample, only you will use the `ma_rb` +functions instead of `ma_pcm_rb` and instead of frame counts you'll pass around byte counts. + +The maximum size of the buffer in bytes is 0x7FFFFFFF-(MA_SIMD_ALIGNMENT-1) due to the most significant bit being used to encode a flag and the internally +managed buffers always being aligned to MA_SIMD_ALIGNMENT. + +Note that the ring buffer is only thread safe when used by a single consumer thread and single producer thread. + + + +Backends +======== +The following backends are supported by miniaudio. + + |-------------|-----------------------|--------------------------------------------------------| + | Name | Enum Name | Supported Operating Systems | + |-------------|-----------------------|--------------------------------------------------------| + | WASAPI | ma_backend_wasapi | Windows Vista+ | + | DirectSound | ma_backend_dsound | Windows XP+ | + | WinMM | ma_backend_winmm | Windows XP+ (may work on older versions, but untested) | + | Core Audio | ma_backend_coreaudio | macOS, iOS | + | ALSA | ma_backend_alsa | Linux | + | PulseAudio | ma_backend_pulseaudio | Cross Platform (disabled on Windows, BSD and Android) | + | JACK | ma_backend_jack | Cross Platform (disabled on BSD and Android) | + | sndio | ma_backend_sndio | OpenBSD | + | audio(4) | ma_backend_audio4 | NetBSD, OpenBSD | + | OSS | ma_backend_oss | FreeBSD | + | AAudio | ma_backend_aaudio | Android 8+ | + | OpenSL|ES | ma_backend_opensl | Android (API level 16+) | + | Web Audio | ma_backend_webaudio | Web (via Emscripten) | + | Null | ma_backend_null | Cross Platform (not used on Web) | + |-------------|-----------------------|--------------------------------------------------------| + +Some backends have some nuance details you may want to be aware of. + +WASAPI +------ +- Low-latency shared mode will be disabled when using an application-defined sample rate which is different to the device's native sample rate. To work around + this, set wasapi.noAutoConvertSRC to true in the device config. This is due to IAudioClient3_InitializeSharedAudioStream() failing when the + AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM flag is specified. Setting wasapi.noAutoConvertSRC will result in miniaudio's lower quality internal resampler being used + instead which will in turn enable the use of low-latency shared mode. + +PulseAudio +---------- +- If you experience bad glitching/noise on Arch Linux, consider this fix from the Arch wiki: + https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Glitches,_skips_or_crackling + Alternatively, consider using a different backend such as ALSA. + +Android +------- +- To capture audio on Android, remember to add the RECORD_AUDIO permission to your manifest: + <uses-permission android:name="android.permission.RECORD_AUDIO" /> +- With OpenSL|ES, only a single ma_context can be active at any given time. This is due to a limitation with OpenSL|ES. +- With AAudio, only default devices are enumerated. This is due to AAudio not having an enumeration API (devices are enumerated through Java). You can however + perform your own device enumeration through Java and then set the ID in the ma_device_id structure (ma_device_id.aaudio) and pass it to ma_device_init(). +- The backend API will perform resampling where possible. The reason for this as opposed to using miniaudio's built-in resampler is to take advantage of any + potential device-specific optimizations the driver may implement. + +UWP +--- +- UWP only supports default playback and capture devices. +- UWP requires the Microphone capability to be enabled in the application's manifest (Package.appxmanifest): + <Package ...> + ... + <Capabilities> + <DeviceCapability Name="microphone" /> + </Capabilities> + </Package> + +Web Audio / Emscripten +---------------------- +- You cannot use -std=c* compiler flags, nor -ansi. This only applies to the Emscripten build. +- The first time a context is initialized it will create a global object called "miniaudio" whose primary purpose is to act as a factory for device objects. +- Currently the Web Audio backend uses ScriptProcessorNode's, but this may need to change later as they've been deprecated. +- Google has implemented a policy in their browsers that prevent automatic media output without first receiving some kind of user input. The following web page + has additional details: https://developers.google.com/web/updates/2017/09/autoplay-policy-changes. Starting the device may fail if you try to start playback + without first handling some kind of user input. + + + +Miscellaneous Notes +=================== +- Automatic stream routing is enabled on a per-backend basis. Support is explicitly enabled for WASAPI and Core Audio, however other backends such as + PulseAudio may naturally support it, though not all have been tested. +- The contents of the output buffer passed into the data callback will always be pre-initialized to zero unless the noPreZeroedOutputBuffer config variable in + ma_device_config is set to true, in which case it'll be undefined which will require you to write something to the entire buffer. +- By default miniaudio will automatically clip samples. This only applies when the playback sample format is configured as ma_format_f32. If you are doing + clipping yourself, you can disable this overhead by setting noClip to true in the device config. +- The sndio backend is currently only enabled on OpenBSD builds. +- The audio(4) backend is supported on OpenBSD, but you may need to disable sndiod before you can use it. +- Note that GCC and Clang requires "-msse2", "-mavx2", etc. for SIMD optimizations. +*/ + +#ifndef miniaudio_h +#define miniaudio_h + +#ifdef __cplusplus +extern "C" { +#endif + +#if defined(_MSC_VER) && !defined(__clang__) + #pragma warning(push) + #pragma warning(disable:4201) /* nonstandard extension used: nameless struct/union */ + #pragma warning(disable:4324) /* structure was padded due to alignment specifier */ +#else + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wpedantic" /* For ISO C99 doesn't support unnamed structs/unions [-Wpedantic] */ + #if defined(__clang__) + #pragma GCC diagnostic ignored "-Wc11-extensions" /* anonymous unions are a C11 extension */ + #endif +#endif + +/* Platform/backend detection. */ +#ifdef _WIN32 + #define MA_WIN32 + #if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PC_APP || WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP) + #define MA_WIN32_UWP + #else + #define MA_WIN32_DESKTOP + #endif +#else + #define MA_POSIX + + /* We only use multi-threading with the device IO API, so no need to include these headers otherwise. */ +#if !defined(MA_NO_DEVICE_IO) + #include <pthread.h> /* Unfortunate #include, but needed for pthread_t, pthread_mutex_t and pthread_cond_t types. */ + #include <semaphore.h> +#endif + + #ifdef __unix__ + #define MA_UNIX + #if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) + #define MA_BSD + #endif + #endif + #ifdef __linux__ + #define MA_LINUX + #endif + #ifdef __APPLE__ + #define MA_APPLE + #endif + #ifdef __ANDROID__ + #define MA_ANDROID + #endif + #ifdef __EMSCRIPTEN__ + #define MA_EMSCRIPTEN + #endif +#endif + +#include <stddef.h> /* For size_t. */ + +/* Sized types. Prefer built-in types. Fall back to stdint. */ +#ifdef _MSC_VER + #if defined(__clang__) + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wlanguage-extension-token" + #pragma GCC diagnostic ignored "-Wlong-long" + #pragma GCC diagnostic ignored "-Wc++11-long-long" + #endif + typedef signed __int8 ma_int8; + typedef unsigned __int8 ma_uint8; + typedef signed __int16 ma_int16; + typedef unsigned __int16 ma_uint16; + typedef signed __int32 ma_int32; + typedef unsigned __int32 ma_uint32; + typedef signed __int64 ma_int64; + typedef unsigned __int64 ma_uint64; + #if defined(__clang__) + #pragma GCC diagnostic pop + #endif +#else + #define MA_HAS_STDINT + #include <stdint.h> + typedef int8_t ma_int8; + typedef uint8_t ma_uint8; + typedef int16_t ma_int16; + typedef uint16_t ma_uint16; + typedef int32_t ma_int32; + typedef uint32_t ma_uint32; + typedef int64_t ma_int64; + typedef uint64_t ma_uint64; +#endif + +#ifdef MA_HAS_STDINT + typedef uintptr_t ma_uintptr; +#else + #if defined(_WIN32) + #if defined(_WIN64) + typedef ma_uint64 ma_uintptr; + #else + typedef ma_uint32 ma_uintptr; + #endif + #elif defined(__GNUC__) + #if defined(__LP64__) + typedef ma_uint64 ma_uintptr; + #else + typedef ma_uint32 ma_uintptr; + #endif + #else + typedef ma_uint64 ma_uintptr; /* Fallback. */ + #endif +#endif + +typedef ma_uint8 ma_bool8; +typedef ma_uint32 ma_bool32; +#define MA_TRUE 1 +#define MA_FALSE 0 + +typedef void* ma_handle; +typedef void* ma_ptr; +typedef void (* ma_proc)(void); + +#if defined(_MSC_VER) && !defined(_WCHAR_T_DEFINED) +typedef ma_uint16 wchar_t; +#endif + +/* Define NULL for some compilers. */ +#ifndef NULL +#define NULL 0 +#endif + +#if defined(SIZE_MAX) + #define MA_SIZE_MAX SIZE_MAX +#else + #define MA_SIZE_MAX 0xFFFFFFFF /* When SIZE_MAX is not defined by the standard library just default to the maximum 32-bit unsigned integer. */ +#endif + + +#ifdef _MSC_VER + #define MA_INLINE __forceinline +#elif defined(__GNUC__) + /* + I've had a bug report where GCC is emitting warnings about functions possibly not being inlineable. This warning happens when + the __attribute__((always_inline)) attribute is defined without an "inline" statement. I think therefore there must be some + case where "__inline__" is not always defined, thus the compiler emitting these warnings. When using -std=c89 or -ansi on the + command line, we cannot use the "inline" keyword and instead need to use "__inline__". In an attempt to work around this issue + I am using "__inline__" only when we're compiling in strict ANSI mode. + */ + #if defined(__STRICT_ANSI__) + #define MA_INLINE __inline__ __attribute__((always_inline)) + #else + #define MA_INLINE inline __attribute__((always_inline)) + #endif +#else + #define MA_INLINE +#endif + +#if !defined(MA_API) + #if defined(MA_DLL) + #if defined(_WIN32) + #define MA_DLL_IMPORT __declspec(dllimport) + #define MA_DLL_EXPORT __declspec(dllexport) + #define MA_DLL_PRIVATE static + #else + #if defined(__GNUC__) && __GNUC__ >= 4 + #define MA_DLL_IMPORT __attribute__((visibility("default"))) + #define MA_DLL_EXPORT __attribute__((visibility("default"))) + #define MA_DLL_PRIVATE __attribute__((visibility("hidden"))) + #else + #define MA_DLL_IMPORT + #define MA_DLL_EXPORT + #define MA_DLL_PRIVATE static + #endif + #endif + + #if defined(MINIAUDIO_IMPLEMENTATION) || defined(MA_IMPLEMENTATION) + #define MA_API MA_DLL_EXPORT + #else + #define MA_API MA_DLL_IMPORT + #endif + #define MA_PRIVATE MA_DLL_PRIVATE + #else + #define MA_API extern + #define MA_PRIVATE static + #endif +#endif + +/* SIMD alignment in bytes. Currently set to 64 bytes in preparation for future AVX-512 optimizations. */ +#define MA_SIMD_ALIGNMENT 64 + + +/* Logging levels */ +#define MA_LOG_LEVEL_VERBOSE 4 +#define MA_LOG_LEVEL_INFO 3 +#define MA_LOG_LEVEL_WARNING 2 +#define MA_LOG_LEVEL_ERROR 1 + +#ifndef MA_LOG_LEVEL +#define MA_LOG_LEVEL MA_LOG_LEVEL_ERROR +#endif + +typedef struct ma_context ma_context; +typedef struct ma_device ma_device; + +typedef ma_uint8 ma_channel; +#define MA_CHANNEL_NONE 0 +#define MA_CHANNEL_MONO 1 +#define MA_CHANNEL_FRONT_LEFT 2 +#define MA_CHANNEL_FRONT_RIGHT 3 +#define MA_CHANNEL_FRONT_CENTER 4 +#define MA_CHANNEL_LFE 5 +#define MA_CHANNEL_BACK_LEFT 6 +#define MA_CHANNEL_BACK_RIGHT 7 +#define MA_CHANNEL_FRONT_LEFT_CENTER 8 +#define MA_CHANNEL_FRONT_RIGHT_CENTER 9 +#define MA_CHANNEL_BACK_CENTER 10 +#define MA_CHANNEL_SIDE_LEFT 11 +#define MA_CHANNEL_SIDE_RIGHT 12 +#define MA_CHANNEL_TOP_CENTER 13 +#define MA_CHANNEL_TOP_FRONT_LEFT 14 +#define MA_CHANNEL_TOP_FRONT_CENTER 15 +#define MA_CHANNEL_TOP_FRONT_RIGHT 16 +#define MA_CHANNEL_TOP_BACK_LEFT 17 +#define MA_CHANNEL_TOP_BACK_CENTER 18 +#define MA_CHANNEL_TOP_BACK_RIGHT 19 +#define MA_CHANNEL_AUX_0 20 +#define MA_CHANNEL_AUX_1 21 +#define MA_CHANNEL_AUX_2 22 +#define MA_CHANNEL_AUX_3 23 +#define MA_CHANNEL_AUX_4 24 +#define MA_CHANNEL_AUX_5 25 +#define MA_CHANNEL_AUX_6 26 +#define MA_CHANNEL_AUX_7 27 +#define MA_CHANNEL_AUX_8 28 +#define MA_CHANNEL_AUX_9 29 +#define MA_CHANNEL_AUX_10 30 +#define MA_CHANNEL_AUX_11 31 +#define MA_CHANNEL_AUX_12 32 +#define MA_CHANNEL_AUX_13 33 +#define MA_CHANNEL_AUX_14 34 +#define MA_CHANNEL_AUX_15 35 +#define MA_CHANNEL_AUX_16 36 +#define MA_CHANNEL_AUX_17 37 +#define MA_CHANNEL_AUX_18 38 +#define MA_CHANNEL_AUX_19 39 +#define MA_CHANNEL_AUX_20 40 +#define MA_CHANNEL_AUX_21 41 +#define MA_CHANNEL_AUX_22 42 +#define MA_CHANNEL_AUX_23 43 +#define MA_CHANNEL_AUX_24 44 +#define MA_CHANNEL_AUX_25 45 +#define MA_CHANNEL_AUX_26 46 +#define MA_CHANNEL_AUX_27 47 +#define MA_CHANNEL_AUX_28 48 +#define MA_CHANNEL_AUX_29 49 +#define MA_CHANNEL_AUX_30 50 +#define MA_CHANNEL_AUX_31 51 +#define MA_CHANNEL_LEFT MA_CHANNEL_FRONT_LEFT +#define MA_CHANNEL_RIGHT MA_CHANNEL_FRONT_RIGHT +#define MA_CHANNEL_POSITION_COUNT (MA_CHANNEL_AUX_31 + 1) + + +typedef int ma_result; +#define MA_SUCCESS 0 +#define MA_ERROR -1 /* A generic error. */ +#define MA_INVALID_ARGS -2 +#define MA_INVALID_OPERATION -3 +#define MA_OUT_OF_MEMORY -4 +#define MA_OUT_OF_RANGE -5 +#define MA_ACCESS_DENIED -6 +#define MA_DOES_NOT_EXIST -7 +#define MA_ALREADY_EXISTS -8 +#define MA_TOO_MANY_OPEN_FILES -9 +#define MA_INVALID_FILE -10 +#define MA_TOO_BIG -11 +#define MA_PATH_TOO_LONG -12 +#define MA_NAME_TOO_LONG -13 +#define MA_NOT_DIRECTORY -14 +#define MA_IS_DIRECTORY -15 +#define MA_DIRECTORY_NOT_EMPTY -16 +#define MA_END_OF_FILE -17 +#define MA_NO_SPACE -18 +#define MA_BUSY -19 +#define MA_IO_ERROR -20 +#define MA_INTERRUPT -21 +#define MA_UNAVAILABLE -22 +#define MA_ALREADY_IN_USE -23 +#define MA_BAD_ADDRESS -24 +#define MA_BAD_SEEK -25 +#define MA_BAD_PIPE -26 +#define MA_DEADLOCK -27 +#define MA_TOO_MANY_LINKS -28 +#define MA_NOT_IMPLEMENTED -29 +#define MA_NO_MESSAGE -30 +#define MA_BAD_MESSAGE -31 +#define MA_NO_DATA_AVAILABLE -32 +#define MA_INVALID_DATA -33 +#define MA_TIMEOUT -34 +#define MA_NO_NETWORK -35 +#define MA_NOT_UNIQUE -36 +#define MA_NOT_SOCKET -37 +#define MA_NO_ADDRESS -38 +#define MA_BAD_PROTOCOL -39 +#define MA_PROTOCOL_UNAVAILABLE -40 +#define MA_PROTOCOL_NOT_SUPPORTED -41 +#define MA_PROTOCOL_FAMILY_NOT_SUPPORTED -42 +#define MA_ADDRESS_FAMILY_NOT_SUPPORTED -43 +#define MA_SOCKET_NOT_SUPPORTED -44 +#define MA_CONNECTION_RESET -45 +#define MA_ALREADY_CONNECTED -46 +#define MA_NOT_CONNECTED -47 +#define MA_CONNECTION_REFUSED -48 +#define MA_NO_HOST -49 +#define MA_IN_PROGRESS -50 +#define MA_CANCELLED -51 +#define MA_MEMORY_ALREADY_MAPPED -52 +#define MA_AT_END -53 + +/* General miniaudio-specific errors. */ +#define MA_FORMAT_NOT_SUPPORTED -100 +#define MA_DEVICE_TYPE_NOT_SUPPORTED -101 +#define MA_SHARE_MODE_NOT_SUPPORTED -102 +#define MA_NO_BACKEND -103 +#define MA_NO_DEVICE -104 +#define MA_API_NOT_FOUND -105 +#define MA_INVALID_DEVICE_CONFIG -106 + +/* State errors. */ +#define MA_DEVICE_NOT_INITIALIZED -200 +#define MA_DEVICE_ALREADY_INITIALIZED -201 +#define MA_DEVICE_NOT_STARTED -202 +#define MA_DEVICE_NOT_STOPPED -203 + +/* Operation errors. */ +#define MA_FAILED_TO_INIT_BACKEND -300 +#define MA_FAILED_TO_OPEN_BACKEND_DEVICE -301 +#define MA_FAILED_TO_START_BACKEND_DEVICE -302 +#define MA_FAILED_TO_STOP_BACKEND_DEVICE -303 + + +/* Standard sample rates. */ +#define MA_SAMPLE_RATE_8000 8000 +#define MA_SAMPLE_RATE_11025 11025 +#define MA_SAMPLE_RATE_16000 16000 +#define MA_SAMPLE_RATE_22050 22050 +#define MA_SAMPLE_RATE_24000 24000 +#define MA_SAMPLE_RATE_32000 32000 +#define MA_SAMPLE_RATE_44100 44100 +#define MA_SAMPLE_RATE_48000 48000 +#define MA_SAMPLE_RATE_88200 88200 +#define MA_SAMPLE_RATE_96000 96000 +#define MA_SAMPLE_RATE_176400 176400 +#define MA_SAMPLE_RATE_192000 192000 +#define MA_SAMPLE_RATE_352800 352800 +#define MA_SAMPLE_RATE_384000 384000 + +#define MA_MIN_CHANNELS 1 +#define MA_MAX_CHANNELS 32 +#define MA_MIN_SAMPLE_RATE MA_SAMPLE_RATE_8000 +#define MA_MAX_SAMPLE_RATE MA_SAMPLE_RATE_384000 + +#ifndef MA_MAX_FILTER_ORDER +#define MA_MAX_FILTER_ORDER 8 +#endif + +typedef enum +{ + ma_stream_format_pcm = 0 +} ma_stream_format; + +typedef enum +{ + ma_stream_layout_interleaved = 0, + ma_stream_layout_deinterleaved +} ma_stream_layout; + +typedef enum +{ + ma_dither_mode_none = 0, + ma_dither_mode_rectangle, + ma_dither_mode_triangle +} ma_dither_mode; + +typedef enum +{ + /* + I like to keep these explicitly defined because they're used as a key into a lookup table. When items are + added to this, make sure there are no gaps and that they're added to the lookup table in ma_get_bytes_per_sample(). + */ + ma_format_unknown = 0, /* Mainly used for indicating an error, but also used as the default for the output format for decoders. */ + ma_format_u8 = 1, + ma_format_s16 = 2, /* Seems to be the most widely supported format. */ + ma_format_s24 = 3, /* Tightly packed. 3 bytes per sample. */ + ma_format_s32 = 4, + ma_format_f32 = 5, + ma_format_count +} ma_format; + +typedef enum +{ + ma_channel_mix_mode_rectangular = 0, /* Simple averaging based on the plane(s) the channel is sitting on. */ + ma_channel_mix_mode_simple, /* Drop excess channels; zeroed out extra channels. */ + ma_channel_mix_mode_custom_weights, /* Use custom weights specified in ma_channel_router_config. */ + ma_channel_mix_mode_planar_blend = ma_channel_mix_mode_rectangular, + ma_channel_mix_mode_default = ma_channel_mix_mode_planar_blend +} ma_channel_mix_mode; + +typedef enum +{ + ma_standard_channel_map_microsoft, + ma_standard_channel_map_alsa, + ma_standard_channel_map_rfc3551, /* Based off AIFF. */ + ma_standard_channel_map_flac, + ma_standard_channel_map_vorbis, + ma_standard_channel_map_sound4, /* FreeBSD's sound(4). */ + ma_standard_channel_map_sndio, /* www.sndio.org/tips.html */ + ma_standard_channel_map_webaudio = ma_standard_channel_map_flac, /* https://webaudio.github.io/web-audio-api/#ChannelOrdering. Only 1, 2, 4 and 6 channels are defined, but can fill in the gaps with logical assumptions. */ + ma_standard_channel_map_default = ma_standard_channel_map_microsoft +} ma_standard_channel_map; + +typedef enum +{ + ma_performance_profile_low_latency = 0, + ma_performance_profile_conservative +} ma_performance_profile; + + +typedef struct +{ + void* pUserData; + void* (* onMalloc)(size_t sz, void* pUserData); + void* (* onRealloc)(void* p, size_t sz, void* pUserData); + void (* onFree)(void* p, void* pUserData); +} ma_allocation_callbacks; + + +/************************************************************************************************************************************************************** + +Biquad Filtering + +**************************************************************************************************************************************************************/ +typedef union +{ + float f32; + ma_int32 s32; +} ma_biquad_coefficient; + +typedef struct +{ + ma_format format; + ma_uint32 channels; + double b0; + double b1; + double b2; + double a0; + double a1; + double a2; +} ma_biquad_config; + +MA_API ma_biquad_config ma_biquad_config_init(ma_format format, ma_uint32 channels, double b0, double b1, double b2, double a0, double a1, double a2); + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_biquad_coefficient b0; + ma_biquad_coefficient b1; + ma_biquad_coefficient b2; + ma_biquad_coefficient a1; + ma_biquad_coefficient a2; + ma_biquad_coefficient r1[MA_MAX_CHANNELS]; + ma_biquad_coefficient r2[MA_MAX_CHANNELS]; +} ma_biquad; + +MA_API ma_result ma_biquad_init(const ma_biquad_config* pConfig, ma_biquad* pBQ); +MA_API ma_result ma_biquad_reinit(const ma_biquad_config* pConfig, ma_biquad* pBQ); +MA_API ma_result ma_biquad_process_pcm_frames(ma_biquad* pBQ, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_biquad_get_latency(ma_biquad* pBQ); + + +/************************************************************************************************************************************************************** + +Low-Pass Filtering + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double cutoffFrequency; + double q; +} ma_lpf1_config, ma_lpf2_config; + +MA_API ma_lpf1_config ma_lpf1_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency); +MA_API ma_lpf2_config ma_lpf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, double q); + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_biquad_coefficient a; + ma_biquad_coefficient r1[MA_MAX_CHANNELS]; +} ma_lpf1; + +MA_API ma_result ma_lpf1_init(const ma_lpf1_config* pConfig, ma_lpf1* pLPF); +MA_API ma_result ma_lpf1_reinit(const ma_lpf1_config* pConfig, ma_lpf1* pLPF); +MA_API ma_result ma_lpf1_process_pcm_frames(ma_lpf1* pLPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_lpf1_get_latency(ma_lpf1* pLPF); + +typedef struct +{ + ma_biquad bq; /* The second order low-pass filter is implemented as a biquad filter. */ +} ma_lpf2; + +MA_API ma_result ma_lpf2_init(const ma_lpf2_config* pConfig, ma_lpf2* pLPF); +MA_API ma_result ma_lpf2_reinit(const ma_lpf2_config* pConfig, ma_lpf2* pLPF); +MA_API ma_result ma_lpf2_process_pcm_frames(ma_lpf2* pLPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_lpf2_get_latency(ma_lpf2* pLPF); + + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double cutoffFrequency; + ma_uint32 order; /* If set to 0, will be treated as a passthrough (no filtering will be applied). */ +} ma_lpf_config; + +MA_API ma_lpf_config ma_lpf_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order); + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 lpf1Count; + ma_uint32 lpf2Count; + ma_lpf1 lpf1[1]; + ma_lpf2 lpf2[MA_MAX_FILTER_ORDER/2]; +} ma_lpf; + +MA_API ma_result ma_lpf_init(const ma_lpf_config* pConfig, ma_lpf* pLPF); +MA_API ma_result ma_lpf_reinit(const ma_lpf_config* pConfig, ma_lpf* pLPF); +MA_API ma_result ma_lpf_process_pcm_frames(ma_lpf* pLPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_lpf_get_latency(ma_lpf* pLPF); + + +/************************************************************************************************************************************************************** + +High-Pass Filtering + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double cutoffFrequency; + double q; +} ma_hpf1_config, ma_hpf2_config; + +MA_API ma_hpf1_config ma_hpf1_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency); +MA_API ma_hpf2_config ma_hpf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, double q); + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_biquad_coefficient a; + ma_biquad_coefficient r1[MA_MAX_CHANNELS]; +} ma_hpf1; + +MA_API ma_result ma_hpf1_init(const ma_hpf1_config* pConfig, ma_hpf1* pHPF); +MA_API ma_result ma_hpf1_reinit(const ma_hpf1_config* pConfig, ma_hpf1* pHPF); +MA_API ma_result ma_hpf1_process_pcm_frames(ma_hpf1* pHPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_hpf1_get_latency(ma_hpf1* pHPF); + +typedef struct +{ + ma_biquad bq; /* The second order high-pass filter is implemented as a biquad filter. */ +} ma_hpf2; + +MA_API ma_result ma_hpf2_init(const ma_hpf2_config* pConfig, ma_hpf2* pHPF); +MA_API ma_result ma_hpf2_reinit(const ma_hpf2_config* pConfig, ma_hpf2* pHPF); +MA_API ma_result ma_hpf2_process_pcm_frames(ma_hpf2* pHPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_hpf2_get_latency(ma_hpf2* pHPF); + + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double cutoffFrequency; + ma_uint32 order; /* If set to 0, will be treated as a passthrough (no filtering will be applied). */ +} ma_hpf_config; + +MA_API ma_hpf_config ma_hpf_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order); + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 hpf1Count; + ma_uint32 hpf2Count; + ma_hpf1 hpf1[1]; + ma_hpf2 hpf2[MA_MAX_FILTER_ORDER/2]; +} ma_hpf; + +MA_API ma_result ma_hpf_init(const ma_hpf_config* pConfig, ma_hpf* pHPF); +MA_API ma_result ma_hpf_reinit(const ma_hpf_config* pConfig, ma_hpf* pHPF); +MA_API ma_result ma_hpf_process_pcm_frames(ma_hpf* pHPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_hpf_get_latency(ma_hpf* pHPF); + + +/************************************************************************************************************************************************************** + +Band-Pass Filtering + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double cutoffFrequency; + double q; +} ma_bpf2_config; + +MA_API ma_bpf2_config ma_bpf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, double q); + +typedef struct +{ + ma_biquad bq; /* The second order band-pass filter is implemented as a biquad filter. */ +} ma_bpf2; + +MA_API ma_result ma_bpf2_init(const ma_bpf2_config* pConfig, ma_bpf2* pBPF); +MA_API ma_result ma_bpf2_reinit(const ma_bpf2_config* pConfig, ma_bpf2* pBPF); +MA_API ma_result ma_bpf2_process_pcm_frames(ma_bpf2* pBPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_bpf2_get_latency(ma_bpf2* pBPF); + + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double cutoffFrequency; + ma_uint32 order; /* If set to 0, will be treated as a passthrough (no filtering will be applied). */ +} ma_bpf_config; + +MA_API ma_bpf_config ma_bpf_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order); + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 bpf2Count; + ma_bpf2 bpf2[MA_MAX_FILTER_ORDER/2]; +} ma_bpf; + +MA_API ma_result ma_bpf_init(const ma_bpf_config* pConfig, ma_bpf* pBPF); +MA_API ma_result ma_bpf_reinit(const ma_bpf_config* pConfig, ma_bpf* pBPF); +MA_API ma_result ma_bpf_process_pcm_frames(ma_bpf* pBPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_bpf_get_latency(ma_bpf* pBPF); + + +/************************************************************************************************************************************************************** + +Notching Filter + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double q; + double frequency; +} ma_notch2_config; + +MA_API ma_notch2_config ma_notch2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double q, double frequency); + +typedef struct +{ + ma_biquad bq; +} ma_notch2; + +MA_API ma_result ma_notch2_init(const ma_notch2_config* pConfig, ma_notch2* pFilter); +MA_API ma_result ma_notch2_reinit(const ma_notch2_config* pConfig, ma_notch2* pFilter); +MA_API ma_result ma_notch2_process_pcm_frames(ma_notch2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_notch2_get_latency(ma_notch2* pFilter); + + +/************************************************************************************************************************************************************** + +Peaking EQ Filter + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double gainDB; + double q; + double frequency; +} ma_peak2_config; + +MA_API ma_peak2_config ma_peak2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double q, double frequency); + +typedef struct +{ + ma_biquad bq; +} ma_peak2; + +MA_API ma_result ma_peak2_init(const ma_peak2_config* pConfig, ma_peak2* pFilter); +MA_API ma_result ma_peak2_reinit(const ma_peak2_config* pConfig, ma_peak2* pFilter); +MA_API ma_result ma_peak2_process_pcm_frames(ma_peak2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_peak2_get_latency(ma_peak2* pFilter); + + +/************************************************************************************************************************************************************** + +Low Shelf Filter + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double gainDB; + double shelfSlope; + double frequency; +} ma_loshelf2_config; + +MA_API ma_loshelf2_config ma_loshelf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double shelfSlope, double frequency); + +typedef struct +{ + ma_biquad bq; +} ma_loshelf2; + +MA_API ma_result ma_loshelf2_init(const ma_loshelf2_config* pConfig, ma_loshelf2* pFilter); +MA_API ma_result ma_loshelf2_reinit(const ma_loshelf2_config* pConfig, ma_loshelf2* pFilter); +MA_API ma_result ma_loshelf2_process_pcm_frames(ma_loshelf2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_loshelf2_get_latency(ma_loshelf2* pFilter); + + +/************************************************************************************************************************************************************** + +High Shelf Filter + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + double gainDB; + double shelfSlope; + double frequency; +} ma_hishelf2_config; + +MA_API ma_hishelf2_config ma_hishelf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double shelfSlope, double frequency); + +typedef struct +{ + ma_biquad bq; +} ma_hishelf2; + +MA_API ma_result ma_hishelf2_init(const ma_hishelf2_config* pConfig, ma_hishelf2* pFilter); +MA_API ma_result ma_hishelf2_reinit(const ma_hishelf2_config* pConfig, ma_hishelf2* pFilter); +MA_API ma_result ma_hishelf2_process_pcm_frames(ma_hishelf2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); +MA_API ma_uint32 ma_hishelf2_get_latency(ma_hishelf2* pFilter); + + + +/************************************************************************************************************************************************************ +************************************************************************************************************************************************************* + +DATA CONVERSION +=============== + +This section contains the APIs for data conversion. You will find everything here for channel mapping, sample format conversion, resampling, etc. + +************************************************************************************************************************************************************* +************************************************************************************************************************************************************/ + +/************************************************************************************************************************************************************** + +Resampling + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRateIn; + ma_uint32 sampleRateOut; + ma_uint32 lpfOrder; /* The low-pass filter order. Setting this to 0 will disable low-pass filtering. */ + double lpfNyquistFactor; /* 0..1. Defaults to 1. 1 = Half the sampling frequency (Nyquist Frequency), 0.5 = Quarter the sampling frequency (half Nyquest Frequency), etc. */ +} ma_linear_resampler_config; + +MA_API ma_linear_resampler_config ma_linear_resampler_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut); + +typedef struct +{ + ma_linear_resampler_config config; + ma_uint32 inAdvanceInt; + ma_uint32 inAdvanceFrac; + ma_uint32 inTimeInt; + ma_uint32 inTimeFrac; + union + { + float f32[MA_MAX_CHANNELS]; + ma_int16 s16[MA_MAX_CHANNELS]; + } x0; /* The previous input frame. */ + union + { + float f32[MA_MAX_CHANNELS]; + ma_int16 s16[MA_MAX_CHANNELS]; + } x1; /* The next input frame. */ + ma_lpf lpf; +} ma_linear_resampler; + +MA_API ma_result ma_linear_resampler_init(const ma_linear_resampler_config* pConfig, ma_linear_resampler* pResampler); +MA_API void ma_linear_resampler_uninit(ma_linear_resampler* pResampler); +MA_API ma_result ma_linear_resampler_process_pcm_frames(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut); +MA_API ma_result ma_linear_resampler_set_rate(ma_linear_resampler* pResampler, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut); +MA_API ma_result ma_linear_resampler_set_rate_ratio(ma_linear_resampler* pResampler, float ratioInOut); +MA_API ma_uint64 ma_linear_resampler_get_required_input_frame_count(ma_linear_resampler* pResampler, ma_uint64 outputFrameCount); +MA_API ma_uint64 ma_linear_resampler_get_expected_output_frame_count(ma_linear_resampler* pResampler, ma_uint64 inputFrameCount); +MA_API ma_uint64 ma_linear_resampler_get_input_latency(ma_linear_resampler* pResampler); +MA_API ma_uint64 ma_linear_resampler_get_output_latency(ma_linear_resampler* pResampler); + +typedef enum +{ + ma_resample_algorithm_linear = 0, /* Fastest, lowest quality. Optional low-pass filtering. Default. */ + ma_resample_algorithm_speex +} ma_resample_algorithm; + +typedef struct +{ + ma_format format; /* Must be either ma_format_f32 or ma_format_s16. */ + ma_uint32 channels; + ma_uint32 sampleRateIn; + ma_uint32 sampleRateOut; + ma_resample_algorithm algorithm; + struct + { + ma_uint32 lpfOrder; + double lpfNyquistFactor; + } linear; + struct + { + int quality; /* 0 to 10. Defaults to 3. */ + } speex; +} ma_resampler_config; + +MA_API ma_resampler_config ma_resampler_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut, ma_resample_algorithm algorithm); + +typedef struct +{ + ma_resampler_config config; + union + { + ma_linear_resampler linear; + struct + { + void* pSpeexResamplerState; /* SpeexResamplerState* */ + } speex; + } state; +} ma_resampler; + +/* +Initializes a new resampler object from a config. +*/ +MA_API ma_result ma_resampler_init(const ma_resampler_config* pConfig, ma_resampler* pResampler); + +/* +Uninitializes a resampler. +*/ +MA_API void ma_resampler_uninit(ma_resampler* pResampler); + +/* +Converts the given input data. + +Both the input and output frames must be in the format specified in the config when the resampler was initilized. + +On input, [pFrameCountOut] contains the number of output frames to process. On output it contains the number of output frames that +were actually processed, which may be less than the requested amount which will happen if there's not enough input data. You can use +ma_resampler_get_expected_output_frame_count() to know how many output frames will be processed for a given number of input frames. + +On input, [pFrameCountIn] contains the number of input frames contained in [pFramesIn]. On output it contains the number of whole +input frames that were actually processed. You can use ma_resampler_get_required_input_frame_count() to know how many input frames +you should provide for a given number of output frames. [pFramesIn] can be NULL, in which case zeroes will be used instead. + +If [pFramesOut] is NULL, a seek is performed. In this case, if [pFrameCountOut] is not NULL it will seek by the specified number of +output frames. Otherwise, if [pFramesCountOut] is NULL and [pFrameCountIn] is not NULL, it will seek by the specified number of input +frames. When seeking, [pFramesIn] is allowed to NULL, in which case the internal timing state will be updated, but no input will be +processed. In this case, any internal filter state will be updated as if zeroes were passed in. + +It is an error for [pFramesOut] to be non-NULL and [pFrameCountOut] to be NULL. + +It is an error for both [pFrameCountOut] and [pFrameCountIn] to be NULL. +*/ +MA_API ma_result ma_resampler_process_pcm_frames(ma_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut); + + +/* +Sets the input and output sample sample rate. +*/ +MA_API ma_result ma_resampler_set_rate(ma_resampler* pResampler, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut); + +/* +Sets the input and output sample rate as a ratio. + +The ration is in/out. +*/ +MA_API ma_result ma_resampler_set_rate_ratio(ma_resampler* pResampler, float ratio); + + +/* +Calculates the number of whole input frames that would need to be read from the client in order to output the specified +number of output frames. + +The returned value does not include cached input frames. It only returns the number of extra frames that would need to be +read from the input buffer in order to output the specified number of output frames. +*/ +MA_API ma_uint64 ma_resampler_get_required_input_frame_count(ma_resampler* pResampler, ma_uint64 outputFrameCount); + +/* +Calculates the number of whole output frames that would be output after fully reading and consuming the specified number of +input frames. +*/ +MA_API ma_uint64 ma_resampler_get_expected_output_frame_count(ma_resampler* pResampler, ma_uint64 inputFrameCount); + + +/* +Retrieves the latency introduced by the resampler in input frames. +*/ +MA_API ma_uint64 ma_resampler_get_input_latency(ma_resampler* pResampler); + +/* +Retrieves the latency introduced by the resampler in output frames. +*/ +MA_API ma_uint64 ma_resampler_get_output_latency(ma_resampler* pResampler); + + + +/************************************************************************************************************************************************************** + +Channel Conversion + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format format; + ma_uint32 channelsIn; + ma_uint32 channelsOut; + ma_channel channelMapIn[MA_MAX_CHANNELS]; + ma_channel channelMapOut[MA_MAX_CHANNELS]; + ma_channel_mix_mode mixingMode; + float weights[MA_MAX_CHANNELS][MA_MAX_CHANNELS]; /* [in][out]. Only used when mixingMode is set to ma_channel_mix_mode_custom_weights. */ +} ma_channel_converter_config; + +MA_API ma_channel_converter_config ma_channel_converter_config_init(ma_format format, ma_uint32 channelsIn, const ma_channel channelMapIn[MA_MAX_CHANNELS], ma_uint32 channelsOut, const ma_channel channelMapOut[MA_MAX_CHANNELS], ma_channel_mix_mode mixingMode); + +typedef struct +{ + ma_format format; + ma_uint32 channelsIn; + ma_uint32 channelsOut; + ma_channel channelMapIn[MA_MAX_CHANNELS]; + ma_channel channelMapOut[MA_MAX_CHANNELS]; + ma_channel_mix_mode mixingMode; + union + { + float f32[MA_MAX_CHANNELS][MA_MAX_CHANNELS]; + ma_int32 s16[MA_MAX_CHANNELS][MA_MAX_CHANNELS]; + } weights; + ma_bool32 isPassthrough : 1; + ma_bool32 isSimpleShuffle : 1; + ma_bool32 isSimpleMonoExpansion : 1; + ma_bool32 isStereoToMono : 1; + ma_uint8 shuffleTable[MA_MAX_CHANNELS]; +} ma_channel_converter; + +MA_API ma_result ma_channel_converter_init(const ma_channel_converter_config* pConfig, ma_channel_converter* pConverter); +MA_API void ma_channel_converter_uninit(ma_channel_converter* pConverter); +MA_API ma_result ma_channel_converter_process_pcm_frames(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount); + + +/************************************************************************************************************************************************************** + +Data Conversion + +**************************************************************************************************************************************************************/ +typedef struct +{ + ma_format formatIn; + ma_format formatOut; + ma_uint32 channelsIn; + ma_uint32 channelsOut; + ma_uint32 sampleRateIn; + ma_uint32 sampleRateOut; + ma_channel channelMapIn[MA_MAX_CHANNELS]; + ma_channel channelMapOut[MA_MAX_CHANNELS]; + ma_dither_mode ditherMode; + ma_channel_mix_mode channelMixMode; + float channelWeights[MA_MAX_CHANNELS][MA_MAX_CHANNELS]; /* [in][out]. Only used when channelMixMode is set to ma_channel_mix_mode_custom_weights. */ + struct + { + ma_resample_algorithm algorithm; + ma_bool32 allowDynamicSampleRate; + struct + { + ma_uint32 lpfOrder; + double lpfNyquistFactor; + } linear; + struct + { + int quality; + } speex; + } resampling; +} ma_data_converter_config; + +MA_API ma_data_converter_config ma_data_converter_config_init_default(void); +MA_API ma_data_converter_config ma_data_converter_config_init(ma_format formatIn, ma_format formatOut, ma_uint32 channelsIn, ma_uint32 channelsOut, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut); + +typedef struct +{ + ma_data_converter_config config; + ma_channel_converter channelConverter; + ma_resampler resampler; + ma_bool32 hasPreFormatConversion : 1; + ma_bool32 hasPostFormatConversion : 1; + ma_bool32 hasChannelConverter : 1; + ma_bool32 hasResampler : 1; + ma_bool32 isPassthrough : 1; +} ma_data_converter; + +MA_API ma_result ma_data_converter_init(const ma_data_converter_config* pConfig, ma_data_converter* pConverter); +MA_API void ma_data_converter_uninit(ma_data_converter* pConverter); +MA_API ma_result ma_data_converter_process_pcm_frames(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut); +MA_API ma_result ma_data_converter_set_rate(ma_data_converter* pConverter, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut); +MA_API ma_result ma_data_converter_set_rate_ratio(ma_data_converter* pConverter, float ratioInOut); +MA_API ma_uint64 ma_data_converter_get_required_input_frame_count(ma_data_converter* pConverter, ma_uint64 outputFrameCount); +MA_API ma_uint64 ma_data_converter_get_expected_output_frame_count(ma_data_converter* pConverter, ma_uint64 inputFrameCount); +MA_API ma_uint64 ma_data_converter_get_input_latency(ma_data_converter* pConverter); +MA_API ma_uint64 ma_data_converter_get_output_latency(ma_data_converter* pConverter); + + +/************************************************************************************************************************************************************ + +Format Conversion + +************************************************************************************************************************************************************/ +MA_API void ma_pcm_u8_to_s16(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_u8_to_s24(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_u8_to_s32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_u8_to_f32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s16_to_u8(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s16_to_s24(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s16_to_s32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s16_to_f32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s24_to_u8(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s24_to_s16(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s24_to_s32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s24_to_f32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s32_to_u8(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s32_to_s16(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s32_to_s24(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_s32_to_f32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_f32_to_u8(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_f32_to_s16(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_f32_to_s24(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_f32_to_s32(void* pOut, const void* pIn, ma_uint64 count, ma_dither_mode ditherMode); +MA_API void ma_pcm_convert(void* pOut, ma_format formatOut, const void* pIn, ma_format formatIn, ma_uint64 sampleCount, ma_dither_mode ditherMode); +MA_API void ma_convert_pcm_frames_format(void* pOut, ma_format formatOut, const void* pIn, ma_format formatIn, ma_uint64 frameCount, ma_uint32 channels, ma_dither_mode ditherMode); + +/* +Deinterleaves an interleaved buffer. +*/ +MA_API void ma_deinterleave_pcm_frames(ma_format format, ma_uint32 channels, ma_uint64 frameCount, const void* pInterleavedPCMFrames, void** ppDeinterleavedPCMFrames); + +/* +Interleaves a group of deinterleaved buffers. +*/ +MA_API void ma_interleave_pcm_frames(ma_format format, ma_uint32 channels, ma_uint64 frameCount, const void** ppDeinterleavedPCMFrames, void* pInterleavedPCMFrames); + +/************************************************************************************************************************************************************ + +Channel Maps + +************************************************************************************************************************************************************/ + +/* +Helper for retrieving a standard channel map. +*/ +MA_API void ma_get_standard_channel_map(ma_standard_channel_map standardChannelMap, ma_uint32 channels, ma_channel channelMap[MA_MAX_CHANNELS]); + +/* +Copies a channel map. +*/ +MA_API void ma_channel_map_copy(ma_channel* pOut, const ma_channel* pIn, ma_uint32 channels); + + +/* +Determines whether or not a channel map is valid. + +A blank channel map is valid (all channels set to MA_CHANNEL_NONE). The way a blank channel map is handled is context specific, but +is usually treated as a passthrough. + +Invalid channel maps: + - A channel map with no channels + - A channel map with more than one channel and a mono channel +*/ +MA_API ma_bool32 ma_channel_map_valid(ma_uint32 channels, const ma_channel channelMap[MA_MAX_CHANNELS]); + +/* +Helper for comparing two channel maps for equality. + +This assumes the channel count is the same between the two. +*/ +MA_API ma_bool32 ma_channel_map_equal(ma_uint32 channels, const ma_channel channelMapA[MA_MAX_CHANNELS], const ma_channel channelMapB[MA_MAX_CHANNELS]); + +/* +Helper for determining if a channel map is blank (all channels set to MA_CHANNEL_NONE). +*/ +MA_API ma_bool32 ma_channel_map_blank(ma_uint32 channels, const ma_channel channelMap[MA_MAX_CHANNELS]); + +/* +Helper for determining whether or not a channel is present in the given channel map. +*/ +MA_API ma_bool32 ma_channel_map_contains_channel_position(ma_uint32 channels, const ma_channel channelMap[MA_MAX_CHANNELS], ma_channel channelPosition); + + +/************************************************************************************************************************************************************ + +Conversion Helpers + +************************************************************************************************************************************************************/ + +/* +High-level helper for doing a full format conversion in one go. Returns the number of output frames. Call this with pOut set to NULL to +determine the required size of the output buffer. frameCountOut should be set to the capacity of pOut. If pOut is NULL, frameCountOut is +ignored. + +A return value of 0 indicates an error. + +This function is useful for one-off bulk conversions, but if you're streaming data you should use the ma_data_converter APIs instead. +*/ +MA_API ma_uint64 ma_convert_frames(void* pOut, ma_uint64 frameCountOut, ma_format formatOut, ma_uint32 channelsOut, ma_uint32 sampleRateOut, const void* pIn, ma_uint64 frameCountIn, ma_format formatIn, ma_uint32 channelsIn, ma_uint32 sampleRateIn); +MA_API ma_uint64 ma_convert_frames_ex(void* pOut, ma_uint64 frameCountOut, const void* pIn, ma_uint64 frameCountIn, const ma_data_converter_config* pConfig); + + +/************************************************************************************************************************************************************ + +Ring Buffer + +************************************************************************************************************************************************************/ +typedef struct +{ + void* pBuffer; + ma_uint32 subbufferSizeInBytes; + ma_uint32 subbufferCount; + ma_uint32 subbufferStrideInBytes; + volatile ma_uint32 encodedReadOffset; /* Most significant bit is the loop flag. Lower 31 bits contains the actual offset in bytes. */ + volatile ma_uint32 encodedWriteOffset; /* Most significant bit is the loop flag. Lower 31 bits contains the actual offset in bytes. */ + ma_bool32 ownsBuffer : 1; /* Used to know whether or not miniaudio is responsible for free()-ing the buffer. */ + ma_bool32 clearOnWriteAcquire : 1; /* When set, clears the acquired write buffer before returning from ma_rb_acquire_write(). */ + ma_allocation_callbacks allocationCallbacks; +} ma_rb; + +MA_API ma_result ma_rb_init_ex(size_t subbufferSizeInBytes, size_t subbufferCount, size_t subbufferStrideInBytes, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_rb* pRB); +MA_API ma_result ma_rb_init(size_t bufferSizeInBytes, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_rb* pRB); +MA_API void ma_rb_uninit(ma_rb* pRB); +MA_API void ma_rb_reset(ma_rb* pRB); +MA_API ma_result ma_rb_acquire_read(ma_rb* pRB, size_t* pSizeInBytes, void** ppBufferOut); +MA_API ma_result ma_rb_commit_read(ma_rb* pRB, size_t sizeInBytes, void* pBufferOut); +MA_API ma_result ma_rb_acquire_write(ma_rb* pRB, size_t* pSizeInBytes, void** ppBufferOut); +MA_API ma_result ma_rb_commit_write(ma_rb* pRB, size_t sizeInBytes, void* pBufferOut); +MA_API ma_result ma_rb_seek_read(ma_rb* pRB, size_t offsetInBytes); +MA_API ma_result ma_rb_seek_write(ma_rb* pRB, size_t offsetInBytes); +MA_API ma_int32 ma_rb_pointer_distance(ma_rb* pRB); /* Returns the distance between the write pointer and the read pointer. Should never be negative for a correct program. Will return the number of bytes that can be read before the read pointer hits the write pointer. */ +MA_API ma_uint32 ma_rb_available_read(ma_rb* pRB); +MA_API ma_uint32 ma_rb_available_write(ma_rb* pRB); +MA_API size_t ma_rb_get_subbuffer_size(ma_rb* pRB); +MA_API size_t ma_rb_get_subbuffer_stride(ma_rb* pRB); +MA_API size_t ma_rb_get_subbuffer_offset(ma_rb* pRB, size_t subbufferIndex); +MA_API void* ma_rb_get_subbuffer_ptr(ma_rb* pRB, size_t subbufferIndex, void* pBuffer); + + +typedef struct +{ + ma_rb rb; + ma_format format; + ma_uint32 channels; +} ma_pcm_rb; + +MA_API ma_result ma_pcm_rb_init_ex(ma_format format, ma_uint32 channels, ma_uint32 subbufferSizeInFrames, ma_uint32 subbufferCount, ma_uint32 subbufferStrideInFrames, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_pcm_rb* pRB); +MA_API ma_result ma_pcm_rb_init(ma_format format, ma_uint32 channels, ma_uint32 bufferSizeInFrames, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_pcm_rb* pRB); +MA_API void ma_pcm_rb_uninit(ma_pcm_rb* pRB); +MA_API void ma_pcm_rb_reset(ma_pcm_rb* pRB); +MA_API ma_result ma_pcm_rb_acquire_read(ma_pcm_rb* pRB, ma_uint32* pSizeInFrames, void** ppBufferOut); +MA_API ma_result ma_pcm_rb_commit_read(ma_pcm_rb* pRB, ma_uint32 sizeInFrames, void* pBufferOut); +MA_API ma_result ma_pcm_rb_acquire_write(ma_pcm_rb* pRB, ma_uint32* pSizeInFrames, void** ppBufferOut); +MA_API ma_result ma_pcm_rb_commit_write(ma_pcm_rb* pRB, ma_uint32 sizeInFrames, void* pBufferOut); +MA_API ma_result ma_pcm_rb_seek_read(ma_pcm_rb* pRB, ma_uint32 offsetInFrames); +MA_API ma_result ma_pcm_rb_seek_write(ma_pcm_rb* pRB, ma_uint32 offsetInFrames); +MA_API ma_int32 ma_pcm_rb_pointer_distance(ma_pcm_rb* pRB); /* Return value is in frames. */ +MA_API ma_uint32 ma_pcm_rb_available_read(ma_pcm_rb* pRB); +MA_API ma_uint32 ma_pcm_rb_available_write(ma_pcm_rb* pRB); +MA_API ma_uint32 ma_pcm_rb_get_subbuffer_size(ma_pcm_rb* pRB); +MA_API ma_uint32 ma_pcm_rb_get_subbuffer_stride(ma_pcm_rb* pRB); +MA_API ma_uint32 ma_pcm_rb_get_subbuffer_offset(ma_pcm_rb* pRB, ma_uint32 subbufferIndex); +MA_API void* ma_pcm_rb_get_subbuffer_ptr(ma_pcm_rb* pRB, ma_uint32 subbufferIndex, void* pBuffer); + + +/************************************************************************************************************************************************************ + +Miscellaneous Helpers + +************************************************************************************************************************************************************/ +/* +Retrieves a human readable description of the given result code. +*/ +MA_API const char* ma_result_description(ma_result result); + +/* +malloc(). Calls MA_MALLOC(). +*/ +MA_API void* ma_malloc(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks); + +/* +realloc(). Calls MA_REALLOC(). +*/ +MA_API void* ma_realloc(void* p, size_t sz, const ma_allocation_callbacks* pAllocationCallbacks); + +/* +free(). Calls MA_FREE(). +*/ +MA_API void ma_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks); + +/* +Performs an aligned malloc, with the assumption that the alignment is a power of 2. +*/ +MA_API void* ma_aligned_malloc(size_t sz, size_t alignment, const ma_allocation_callbacks* pAllocationCallbacks); + +/* +Free's an aligned malloc'd buffer. +*/ +MA_API void ma_aligned_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks); + +/* +Retrieves a friendly name for a format. +*/ +MA_API const char* ma_get_format_name(ma_format format); + +/* +Blends two frames in floating point format. +*/ +MA_API void ma_blend_f32(float* pOut, float* pInA, float* pInB, float factor, ma_uint32 channels); + +/* +Retrieves the size of a sample in bytes for the given format. + +This API is efficient and is implemented using a lookup table. + +Thread Safety: SAFE + This API is pure. +*/ +MA_API ma_uint32 ma_get_bytes_per_sample(ma_format format); +static MA_INLINE ma_uint32 ma_get_bytes_per_frame(ma_format format, ma_uint32 channels) { return ma_get_bytes_per_sample(format) * channels; } + +/* +Converts a log level to a string. +*/ +MA_API const char* ma_log_level_to_string(ma_uint32 logLevel); + + + +/************************************************************************************************************************************************************ +************************************************************************************************************************************************************* + +DEVICE I/O +========== + +This section contains the APIs for device playback and capture. Here is where you'll find ma_device_init(), etc. + +************************************************************************************************************************************************************* +************************************************************************************************************************************************************/ +#ifndef MA_NO_DEVICE_IO +/* Some backends are only supported on certain platforms. */ +#if defined(MA_WIN32) + #define MA_SUPPORT_WASAPI + #if defined(MA_WIN32_DESKTOP) /* DirectSound and WinMM backends are only supported on desktops. */ + #define MA_SUPPORT_DSOUND + #define MA_SUPPORT_WINMM + #define MA_SUPPORT_JACK /* JACK is technically supported on Windows, but I don't know how many people use it in practice... */ + #endif +#endif +#if defined(MA_UNIX) + #if defined(MA_LINUX) + #if !defined(MA_ANDROID) /* ALSA is not supported on Android. */ + #define MA_SUPPORT_ALSA + #endif + #endif + #if !defined(MA_BSD) && !defined(MA_ANDROID) && !defined(MA_EMSCRIPTEN) + #define MA_SUPPORT_PULSEAUDIO + #define MA_SUPPORT_JACK + #endif + #if defined(MA_ANDROID) + #define MA_SUPPORT_AAUDIO + #define MA_SUPPORT_OPENSL + #endif + #if defined(__OpenBSD__) /* <-- Change this to "#if defined(MA_BSD)" to enable sndio on all BSD flavors. */ + #define MA_SUPPORT_SNDIO /* sndio is only supported on OpenBSD for now. May be expanded later if there's demand. */ + #endif + #if defined(__NetBSD__) || defined(__OpenBSD__) + #define MA_SUPPORT_AUDIO4 /* Only support audio(4) on platforms with known support. */ + #endif + #if defined(__FreeBSD__) || defined(__DragonFly__) + #define MA_SUPPORT_OSS /* Only support OSS on specific platforms with known support. */ + #endif +#endif +#if defined(MA_APPLE) + #define MA_SUPPORT_COREAUDIO +#endif +#if defined(MA_EMSCRIPTEN) + #define MA_SUPPORT_WEBAUDIO +#endif + +/* Explicitly disable the Null backend for Emscripten because it uses a background thread which is not properly supported right now. */ +#if !defined(MA_EMSCRIPTEN) +#define MA_SUPPORT_NULL +#endif + + +#if !defined(MA_NO_WASAPI) && defined(MA_SUPPORT_WASAPI) + #define MA_ENABLE_WASAPI +#endif +#if !defined(MA_NO_DSOUND) && defined(MA_SUPPORT_DSOUND) + #define MA_ENABLE_DSOUND +#endif +#if !defined(MA_NO_WINMM) && defined(MA_SUPPORT_WINMM) + #define MA_ENABLE_WINMM +#endif +#if !defined(MA_NO_ALSA) && defined(MA_SUPPORT_ALSA) + #define MA_ENABLE_ALSA +#endif +#if !defined(MA_NO_PULSEAUDIO) && defined(MA_SUPPORT_PULSEAUDIO) + #define MA_ENABLE_PULSEAUDIO +#endif +#if !defined(MA_NO_JACK) && defined(MA_SUPPORT_JACK) + #define MA_ENABLE_JACK +#endif +#if !defined(MA_NO_COREAUDIO) && defined(MA_SUPPORT_COREAUDIO) + #define MA_ENABLE_COREAUDIO +#endif +#if !defined(MA_NO_SNDIO) && defined(MA_SUPPORT_SNDIO) + #define MA_ENABLE_SNDIO +#endif +#if !defined(MA_NO_AUDIO4) && defined(MA_SUPPORT_AUDIO4) + #define MA_ENABLE_AUDIO4 +#endif +#if !defined(MA_NO_OSS) && defined(MA_SUPPORT_OSS) + #define MA_ENABLE_OSS +#endif +#if !defined(MA_NO_AAUDIO) && defined(MA_SUPPORT_AAUDIO) + #define MA_ENABLE_AAUDIO +#endif +#if !defined(MA_NO_OPENSL) && defined(MA_SUPPORT_OPENSL) + #define MA_ENABLE_OPENSL +#endif +#if !defined(MA_NO_WEBAUDIO) && defined(MA_SUPPORT_WEBAUDIO) + #define MA_ENABLE_WEBAUDIO +#endif +#if !defined(MA_NO_NULL) && defined(MA_SUPPORT_NULL) + #define MA_ENABLE_NULL +#endif + +#ifdef MA_SUPPORT_WASAPI +/* We need a IMMNotificationClient object for WASAPI. */ +typedef struct +{ + void* lpVtbl; + ma_uint32 counter; + ma_device* pDevice; +} ma_IMMNotificationClient; +#endif + +/* Backend enums must be in priority order. */ +typedef enum +{ + ma_backend_wasapi, + ma_backend_dsound, + ma_backend_winmm, + ma_backend_coreaudio, + ma_backend_sndio, + ma_backend_audio4, + ma_backend_oss, + ma_backend_pulseaudio, + ma_backend_alsa, + ma_backend_jack, + ma_backend_aaudio, + ma_backend_opensl, + ma_backend_webaudio, + ma_backend_null /* <-- Must always be the last item. Lowest priority, and used as the terminator for backend enumeration. */ +} ma_backend; + +/* Thread priorties should be ordered such that the default priority of the worker thread is 0. */ +typedef enum +{ + ma_thread_priority_idle = -5, + ma_thread_priority_lowest = -4, + ma_thread_priority_low = -3, + ma_thread_priority_normal = -2, + ma_thread_priority_high = -1, + ma_thread_priority_highest = 0, + ma_thread_priority_realtime = 1, + ma_thread_priority_default = 0 +} ma_thread_priority; + +typedef struct +{ + ma_context* pContext; + + union + { +#ifdef MA_WIN32 + struct + { + /*HANDLE*/ ma_handle hThread; + } win32; +#endif +#ifdef MA_POSIX + struct + { + pthread_t thread; + } posix; +#endif + int _unused; + }; +} ma_thread; + +typedef struct +{ + ma_context* pContext; + + union + { +#ifdef MA_WIN32 + struct + { + /*HANDLE*/ ma_handle hMutex; + } win32; +#endif +#ifdef MA_POSIX + struct + { + pthread_mutex_t mutex; + } posix; +#endif + int _unused; + }; +} ma_mutex; + +typedef struct +{ + ma_context* pContext; + + union + { +#ifdef MA_WIN32 + struct + { + /*HANDLE*/ ma_handle hEvent; + } win32; +#endif +#ifdef MA_POSIX + struct + { + pthread_mutex_t mutex; + pthread_cond_t condition; + ma_uint32 value; + } posix; +#endif + int _unused; + }; +} ma_event; + +typedef struct +{ + ma_context* pContext; + + union + { +#ifdef MA_WIN32 + struct + { + /*HANDLE*/ ma_handle hSemaphore; + } win32; +#endif +#ifdef MA_POSIX + struct + { + sem_t semaphore; + } posix; +#endif + int _unused; + }; +} ma_semaphore; + + +/* +The callback for processing audio data from the device. + +The data callback is fired by miniaudio whenever the device needs to have more data delivered to a playback device, or when a capture device has some data +available. This is called as soon as the backend asks for more data which means it may be called with inconsistent frame counts. You cannot assume the +callback will be fired with a consistent frame count. + + +Parameters +---------- +pDevice (in) + A pointer to the relevant device. + +pOutput (out) + A pointer to the output buffer that will receive audio data that will later be played back through the speakers. This will be non-null for a playback or + full-duplex device and null for a capture and loopback device. + +pInput (in) + A pointer to the buffer containing input data from a recording device. This will be non-null for a capture, full-duplex or loopback device and null for a + playback device. + +frameCount (in) + The number of PCM frames to process. Note that this will not necessarily be equal to what you requested when you initialized the device. The + `periodSizeInFrames` and `periodSizeInMilliseconds` members of the device config are just hints, and are not necessarily exactly what you'll get. You must + not assume this will always be the same value each time the callback is fired. + + +Remarks +------- +You cannot stop and start the device from inside the callback or else you'll get a deadlock. You must also not uninitialize the device from inside the +callback. The following APIs cannot be called from inside the callback: + + ma_device_init() + ma_device_init_ex() + ma_device_uninit() + ma_device_start() + ma_device_stop() + +The proper way to stop the device is to call `ma_device_stop()` from a different thread, normally the main application thread. +*/ +typedef void (* ma_device_callback_proc)(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount); + +/* +The callback for when the device has been stopped. + +This will be called when the device is stopped explicitly with `ma_device_stop()` and also called implicitly when the device is stopped through external forces +such as being unplugged or an internal error occuring. + + +Parameters +---------- +pDevice (in) + A pointer to the device that has just stopped. + + +Remarks +------- +Do not restart or uninitialize the device from the callback. +*/ +typedef void (* ma_stop_proc)(ma_device* pDevice); + +/* +The callback for handling log messages. + + +Parameters +---------- +pContext (in) + A pointer to the context the log message originated from. + +pDevice (in) + A pointer to the device the log message originate from, if any. This can be null, in which case the message came from the context. + +logLevel (in) + The log level. This can be one of the following: + + |----------------------| + | Log Level | + |----------------------| + | MA_LOG_LEVEL_VERBOSE | + | MA_LOG_LEVEL_INFO | + | MA_LOG_LEVEL_WARNING | + | MA_LOG_LEVEL_ERROR | + |----------------------| + +message (in) + The log message. + + +Remarks +------- +Do not modify the state of the device from inside the callback. +*/ +typedef void (* ma_log_proc)(ma_context* pContext, ma_device* pDevice, ma_uint32 logLevel, const char* message); + +typedef enum +{ + ma_device_type_playback = 1, + ma_device_type_capture = 2, + ma_device_type_duplex = ma_device_type_playback | ma_device_type_capture, /* 3 */ + ma_device_type_loopback = 4 +} ma_device_type; + +typedef enum +{ + ma_share_mode_shared = 0, + ma_share_mode_exclusive +} ma_share_mode; + +/* iOS/tvOS/watchOS session categories. */ +typedef enum +{ + ma_ios_session_category_default = 0, /* AVAudioSessionCategoryPlayAndRecord with AVAudioSessionCategoryOptionDefaultToSpeaker. */ + ma_ios_session_category_none, /* Leave the session category unchanged. */ + ma_ios_session_category_ambient, /* AVAudioSessionCategoryAmbient */ + ma_ios_session_category_solo_ambient, /* AVAudioSessionCategorySoloAmbient */ + ma_ios_session_category_playback, /* AVAudioSessionCategoryPlayback */ + ma_ios_session_category_record, /* AVAudioSessionCategoryRecord */ + ma_ios_session_category_play_and_record, /* AVAudioSessionCategoryPlayAndRecord */ + ma_ios_session_category_multi_route /* AVAudioSessionCategoryMultiRoute */ +} ma_ios_session_category; + +/* iOS/tvOS/watchOS session category options */ +typedef enum +{ + ma_ios_session_category_option_mix_with_others = 0x01, /* AVAudioSessionCategoryOptionMixWithOthers */ + ma_ios_session_category_option_duck_others = 0x02, /* AVAudioSessionCategoryOptionDuckOthers */ + ma_ios_session_category_option_allow_bluetooth = 0x04, /* AVAudioSessionCategoryOptionAllowBluetooth */ + ma_ios_session_category_option_default_to_speaker = 0x08, /* AVAudioSessionCategoryOptionDefaultToSpeaker */ + ma_ios_session_category_option_interrupt_spoken_audio_and_mix_with_others = 0x11, /* AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers */ + ma_ios_session_category_option_allow_bluetooth_a2dp = 0x20, /* AVAudioSessionCategoryOptionAllowBluetoothA2DP */ + ma_ios_session_category_option_allow_air_play = 0x40, /* AVAudioSessionCategoryOptionAllowAirPlay */ +} ma_ios_session_category_option; + +typedef union +{ + ma_int64 counter; + double counterD; +} ma_timer; + +typedef union +{ + wchar_t wasapi[64]; /* WASAPI uses a wchar_t string for identification. */ + ma_uint8 dsound[16]; /* DirectSound uses a GUID for identification. */ + /*UINT_PTR*/ ma_uint32 winmm; /* When creating a device, WinMM expects a Win32 UINT_PTR for device identification. In practice it's actually just a UINT. */ + char alsa[256]; /* ALSA uses a name string for identification. */ + char pulse[256]; /* PulseAudio uses a name string for identification. */ + int jack; /* JACK always uses default devices. */ + char coreaudio[256]; /* Core Audio uses a string for identification. */ + char sndio[256]; /* "snd/0", etc. */ + char audio4[256]; /* "/dev/audio", etc. */ + char oss[64]; /* "dev/dsp0", etc. "dev/dsp" for the default device. */ + ma_int32 aaudio; /* AAudio uses a 32-bit integer for identification. */ + ma_uint32 opensl; /* OpenSL|ES uses a 32-bit unsigned integer for identification. */ + char webaudio[32]; /* Web Audio always uses default devices for now, but if this changes it'll be a GUID. */ + int nullbackend; /* The null backend uses an integer for device IDs. */ +} ma_device_id; + +typedef struct +{ + /* Basic info. This is the only information guaranteed to be filled in during device enumeration. */ + ma_device_id id; + char name[256]; + + /* + Detailed info. As much of this is filled as possible with ma_context_get_device_info(). Note that you are allowed to initialize + a device with settings outside of this range, but it just means the data will be converted using miniaudio's data conversion + pipeline before sending the data to/from the device. Most programs will need to not worry about these values, but it's provided + here mainly for informational purposes or in the rare case that someone might find it useful. + + These will be set to 0 when returned by ma_context_enumerate_devices() or ma_context_get_devices(). + */ + ma_uint32 formatCount; + ma_format formats[ma_format_count]; + ma_uint32 minChannels; + ma_uint32 maxChannels; + ma_uint32 minSampleRate; + ma_uint32 maxSampleRate; + + struct + { + ma_bool32 isDefault; + } _private; +} ma_device_info; + +typedef struct +{ + ma_device_type deviceType; + ma_uint32 sampleRate; + ma_uint32 periodSizeInFrames; + ma_uint32 periodSizeInMilliseconds; + ma_uint32 periods; + ma_performance_profile performanceProfile; + ma_bool32 noPreZeroedOutputBuffer; /* When set to true, the contents of the output buffer passed into the data callback will be left undefined rather than initialized to zero. */ + ma_bool32 noClip; /* When set to true, the contents of the output buffer passed into the data callback will be clipped after returning. Only applies when the playback sample format is f32. */ + ma_device_callback_proc dataCallback; + ma_stop_proc stopCallback; + void* pUserData; + struct + { + ma_resample_algorithm algorithm; + struct + { + ma_uint32 lpfOrder; + } linear; + struct + { + int quality; + } speex; + } resampling; + struct + { + ma_device_id* pDeviceID; + ma_format format; + ma_uint32 channels; + ma_channel channelMap[MA_MAX_CHANNELS]; + ma_share_mode shareMode; + } playback; + struct + { + ma_device_id* pDeviceID; + ma_format format; + ma_uint32 channels; + ma_channel channelMap[MA_MAX_CHANNELS]; + ma_share_mode shareMode; + } capture; + + struct + { + ma_bool32 noAutoConvertSRC; /* When set to true, disables the use of AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM. */ + ma_bool32 noDefaultQualitySRC; /* When set to true, disables the use of AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY. */ + ma_bool32 noAutoStreamRouting; /* Disables automatic stream routing. */ + ma_bool32 noHardwareOffloading; /* Disables WASAPI's hardware offloading feature. */ + } wasapi; + struct + { + ma_bool32 noMMap; /* Disables MMap mode. */ + ma_bool32 noAutoFormat; /* Opens the ALSA device with SND_PCM_NO_AUTO_FORMAT. */ + ma_bool32 noAutoChannels; /* Opens the ALSA device with SND_PCM_NO_AUTO_CHANNELS. */ + ma_bool32 noAutoResample; /* Opens the ALSA device with SND_PCM_NO_AUTO_RESAMPLE. */ + } alsa; + struct + { + const char* pStreamNamePlayback; + const char* pStreamNameCapture; + } pulse; +} ma_device_config; + +typedef struct +{ + ma_log_proc logCallback; + ma_thread_priority threadPriority; + void* pUserData; + ma_allocation_callbacks allocationCallbacks; + struct + { + ma_bool32 useVerboseDeviceEnumeration; + } alsa; + struct + { + const char* pApplicationName; + const char* pServerName; + ma_bool32 tryAutoSpawn; /* Enables autospawning of the PulseAudio daemon if necessary. */ + } pulse; + struct + { + ma_ios_session_category sessionCategory; + ma_uint32 sessionCategoryOptions; + } coreaudio; + struct + { + const char* pClientName; + ma_bool32 tryStartServer; + } jack; +} ma_context_config; + +/* +The callback for handling device enumeration. This is fired from `ma_context_enumerated_devices()`. + + +Parameters +---------- +pContext (in) + A pointer to the context performing the enumeration. + +deviceType (in) + The type of the device being enumerated. This will always be either `ma_device_type_playback` or `ma_device_type_capture`. + +pInfo (in) + A pointer to a `ma_device_info` containing the ID and name of the enumerated device. Note that this will not include detailed information about the device, + only basic information (ID and name). The reason for this is that it would otherwise require opening the backend device to probe for the information which + is too inefficient. + +pUserData (in) + The user data pointer passed into `ma_context_enumerate_devices()`. +*/ +typedef ma_bool32 (* ma_enum_devices_callback_proc)(ma_context* pContext, ma_device_type deviceType, const ma_device_info* pInfo, void* pUserData); + +struct ma_context +{ + ma_backend backend; /* DirectSound, ALSA, etc. */ + ma_log_proc logCallback; + ma_thread_priority threadPriority; + void* pUserData; + ma_allocation_callbacks allocationCallbacks; + ma_mutex deviceEnumLock; /* Used to make ma_context_get_devices() thread safe. */ + ma_mutex deviceInfoLock; /* Used to make ma_context_get_device_info() thread safe. */ + ma_uint32 deviceInfoCapacity; /* Total capacity of pDeviceInfos. */ + ma_uint32 playbackDeviceInfoCount; + ma_uint32 captureDeviceInfoCount; + ma_device_info* pDeviceInfos; /* Playback devices first, then capture. */ + ma_bool32 isBackendAsynchronous : 1; /* Set when the context is initialized. Set to 1 for asynchronous backends such as Core Audio and JACK. Do not modify. */ + + ma_result (* onUninit )(ma_context* pContext); + ma_bool32 (* onDeviceIDEqual )(ma_context* pContext, const ma_device_id* pID0, const ma_device_id* pID1); + ma_result (* onEnumDevices )(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData); /* Return false from the callback to stop enumeration. */ + ma_result (* onGetDeviceInfo )(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_share_mode shareMode, ma_device_info* pDeviceInfo); + ma_result (* onDeviceInit )(ma_context* pContext, const ma_device_config* pConfig, ma_device* pDevice); + void (* onDeviceUninit )(ma_device* pDevice); + ma_result (* onDeviceStart )(ma_device* pDevice); + ma_result (* onDeviceStop )(ma_device* pDevice); + ma_result (* onDeviceMainLoop)(ma_device* pDevice); + + union + { +#ifdef MA_SUPPORT_WASAPI + struct + { + int _unused; + } wasapi; +#endif +#ifdef MA_SUPPORT_DSOUND + struct + { + ma_handle hDSoundDLL; + ma_proc DirectSoundCreate; + ma_proc DirectSoundEnumerateA; + ma_proc DirectSoundCaptureCreate; + ma_proc DirectSoundCaptureEnumerateA; + } dsound; +#endif +#ifdef MA_SUPPORT_WINMM + struct + { + ma_handle hWinMM; + ma_proc waveOutGetNumDevs; + ma_proc waveOutGetDevCapsA; + ma_proc waveOutOpen; + ma_proc waveOutClose; + ma_proc waveOutPrepareHeader; + ma_proc waveOutUnprepareHeader; + ma_proc waveOutWrite; + ma_proc waveOutReset; + ma_proc waveInGetNumDevs; + ma_proc waveInGetDevCapsA; + ma_proc waveInOpen; + ma_proc waveInClose; + ma_proc waveInPrepareHeader; + ma_proc waveInUnprepareHeader; + ma_proc waveInAddBuffer; + ma_proc waveInStart; + ma_proc waveInReset; + } winmm; +#endif +#ifdef MA_SUPPORT_ALSA + struct + { + ma_handle asoundSO; + ma_proc snd_pcm_open; + ma_proc snd_pcm_close; + ma_proc snd_pcm_hw_params_sizeof; + ma_proc snd_pcm_hw_params_any; + ma_proc snd_pcm_hw_params_set_format; + ma_proc snd_pcm_hw_params_set_format_first; + ma_proc snd_pcm_hw_params_get_format_mask; + ma_proc snd_pcm_hw_params_set_channels_near; + ma_proc snd_pcm_hw_params_set_rate_resample; + ma_proc snd_pcm_hw_params_set_rate_near; + ma_proc snd_pcm_hw_params_set_buffer_size_near; + ma_proc snd_pcm_hw_params_set_periods_near; + ma_proc snd_pcm_hw_params_set_access; + ma_proc snd_pcm_hw_params_get_format; + ma_proc snd_pcm_hw_params_get_channels; + ma_proc snd_pcm_hw_params_get_channels_min; + ma_proc snd_pcm_hw_params_get_channels_max; + ma_proc snd_pcm_hw_params_get_rate; + ma_proc snd_pcm_hw_params_get_rate_min; + ma_proc snd_pcm_hw_params_get_rate_max; + ma_proc snd_pcm_hw_params_get_buffer_size; + ma_proc snd_pcm_hw_params_get_periods; + ma_proc snd_pcm_hw_params_get_access; + ma_proc snd_pcm_hw_params; + ma_proc snd_pcm_sw_params_sizeof; + ma_proc snd_pcm_sw_params_current; + ma_proc snd_pcm_sw_params_get_boundary; + ma_proc snd_pcm_sw_params_set_avail_min; + ma_proc snd_pcm_sw_params_set_start_threshold; + ma_proc snd_pcm_sw_params_set_stop_threshold; + ma_proc snd_pcm_sw_params; + ma_proc snd_pcm_format_mask_sizeof; + ma_proc snd_pcm_format_mask_test; + ma_proc snd_pcm_get_chmap; + ma_proc snd_pcm_state; + ma_proc snd_pcm_prepare; + ma_proc snd_pcm_start; + ma_proc snd_pcm_drop; + ma_proc snd_pcm_drain; + ma_proc snd_device_name_hint; + ma_proc snd_device_name_get_hint; + ma_proc snd_card_get_index; + ma_proc snd_device_name_free_hint; + ma_proc snd_pcm_mmap_begin; + ma_proc snd_pcm_mmap_commit; + ma_proc snd_pcm_recover; + ma_proc snd_pcm_readi; + ma_proc snd_pcm_writei; + ma_proc snd_pcm_avail; + ma_proc snd_pcm_avail_update; + ma_proc snd_pcm_wait; + ma_proc snd_pcm_info; + ma_proc snd_pcm_info_sizeof; + ma_proc snd_pcm_info_get_name; + ma_proc snd_config_update_free_global; + + ma_mutex internalDeviceEnumLock; + ma_bool32 useVerboseDeviceEnumeration; + } alsa; +#endif +#ifdef MA_SUPPORT_PULSEAUDIO + struct + { + ma_handle pulseSO; + ma_proc pa_mainloop_new; + ma_proc pa_mainloop_free; + ma_proc pa_mainloop_get_api; + ma_proc pa_mainloop_iterate; + ma_proc pa_mainloop_wakeup; + ma_proc pa_context_new; + ma_proc pa_context_unref; + ma_proc pa_context_connect; + ma_proc pa_context_disconnect; + ma_proc pa_context_set_state_callback; + ma_proc pa_context_get_state; + ma_proc pa_context_get_sink_info_list; + ma_proc pa_context_get_source_info_list; + ma_proc pa_context_get_sink_info_by_name; + ma_proc pa_context_get_source_info_by_name; + ma_proc pa_operation_unref; + ma_proc pa_operation_get_state; + ma_proc pa_channel_map_init_extend; + ma_proc pa_channel_map_valid; + ma_proc pa_channel_map_compatible; + ma_proc pa_stream_new; + ma_proc pa_stream_unref; + ma_proc pa_stream_connect_playback; + ma_proc pa_stream_connect_record; + ma_proc pa_stream_disconnect; + ma_proc pa_stream_get_state; + ma_proc pa_stream_get_sample_spec; + ma_proc pa_stream_get_channel_map; + ma_proc pa_stream_get_buffer_attr; + ma_proc pa_stream_set_buffer_attr; + ma_proc pa_stream_get_device_name; + ma_proc pa_stream_set_write_callback; + ma_proc pa_stream_set_read_callback; + ma_proc pa_stream_flush; + ma_proc pa_stream_drain; + ma_proc pa_stream_is_corked; + ma_proc pa_stream_cork; + ma_proc pa_stream_trigger; + ma_proc pa_stream_begin_write; + ma_proc pa_stream_write; + ma_proc pa_stream_peek; + ma_proc pa_stream_drop; + ma_proc pa_stream_writable_size; + ma_proc pa_stream_readable_size; + + char* pApplicationName; + char* pServerName; + ma_bool32 tryAutoSpawn; + } pulse; +#endif +#ifdef MA_SUPPORT_JACK + struct + { + ma_handle jackSO; + ma_proc jack_client_open; + ma_proc jack_client_close; + ma_proc jack_client_name_size; + ma_proc jack_set_process_callback; + ma_proc jack_set_buffer_size_callback; + ma_proc jack_on_shutdown; + ma_proc jack_get_sample_rate; + ma_proc jack_get_buffer_size; + ma_proc jack_get_ports; + ma_proc jack_activate; + ma_proc jack_deactivate; + ma_proc jack_connect; + ma_proc jack_port_register; + ma_proc jack_port_name; + ma_proc jack_port_get_buffer; + ma_proc jack_free; + + char* pClientName; + ma_bool32 tryStartServer; + } jack; +#endif +#ifdef MA_SUPPORT_COREAUDIO + struct + { + ma_handle hCoreFoundation; + ma_proc CFStringGetCString; + ma_proc CFRelease; + + ma_handle hCoreAudio; + ma_proc AudioObjectGetPropertyData; + ma_proc AudioObjectGetPropertyDataSize; + ma_proc AudioObjectSetPropertyData; + ma_proc AudioObjectAddPropertyListener; + ma_proc AudioObjectRemovePropertyListener; + + ma_handle hAudioUnit; /* Could possibly be set to AudioToolbox on later versions of macOS. */ + ma_proc AudioComponentFindNext; + ma_proc AudioComponentInstanceDispose; + ma_proc AudioComponentInstanceNew; + ma_proc AudioOutputUnitStart; + ma_proc AudioOutputUnitStop; + ma_proc AudioUnitAddPropertyListener; + ma_proc AudioUnitGetPropertyInfo; + ma_proc AudioUnitGetProperty; + ma_proc AudioUnitSetProperty; + ma_proc AudioUnitInitialize; + ma_proc AudioUnitRender; + + /*AudioComponent*/ ma_ptr component; + } coreaudio; +#endif +#ifdef MA_SUPPORT_SNDIO + struct + { + ma_handle sndioSO; + ma_proc sio_open; + ma_proc sio_close; + ma_proc sio_setpar; + ma_proc sio_getpar; + ma_proc sio_getcap; + ma_proc sio_start; + ma_proc sio_stop; + ma_proc sio_read; + ma_proc sio_write; + ma_proc sio_onmove; + ma_proc sio_nfds; + ma_proc sio_pollfd; + ma_proc sio_revents; + ma_proc sio_eof; + ma_proc sio_setvol; + ma_proc sio_onvol; + ma_proc sio_initpar; + } sndio; +#endif +#ifdef MA_SUPPORT_AUDIO4 + struct + { + int _unused; + } audio4; +#endif +#ifdef MA_SUPPORT_OSS + struct + { + int versionMajor; + int versionMinor; + } oss; +#endif +#ifdef MA_SUPPORT_AAUDIO + struct + { + ma_handle hAAudio; /* libaaudio.so */ + ma_proc AAudio_createStreamBuilder; + ma_proc AAudioStreamBuilder_delete; + ma_proc AAudioStreamBuilder_setDeviceId; + ma_proc AAudioStreamBuilder_setDirection; + ma_proc AAudioStreamBuilder_setSharingMode; + ma_proc AAudioStreamBuilder_setFormat; + ma_proc AAudioStreamBuilder_setChannelCount; + ma_proc AAudioStreamBuilder_setSampleRate; + ma_proc AAudioStreamBuilder_setBufferCapacityInFrames; + ma_proc AAudioStreamBuilder_setFramesPerDataCallback; + ma_proc AAudioStreamBuilder_setDataCallback; + ma_proc AAudioStreamBuilder_setErrorCallback; + ma_proc AAudioStreamBuilder_setPerformanceMode; + ma_proc AAudioStreamBuilder_openStream; + ma_proc AAudioStream_close; + ma_proc AAudioStream_getState; + ma_proc AAudioStream_waitForStateChange; + ma_proc AAudioStream_getFormat; + ma_proc AAudioStream_getChannelCount; + ma_proc AAudioStream_getSampleRate; + ma_proc AAudioStream_getBufferCapacityInFrames; + ma_proc AAudioStream_getFramesPerDataCallback; + ma_proc AAudioStream_getFramesPerBurst; + ma_proc AAudioStream_requestStart; + ma_proc AAudioStream_requestStop; + } aaudio; +#endif +#ifdef MA_SUPPORT_OPENSL + struct + { + int _unused; + } opensl; +#endif +#ifdef MA_SUPPORT_WEBAUDIO + struct + { + int _unused; + } webaudio; +#endif +#ifdef MA_SUPPORT_NULL + struct + { + int _unused; + } null_backend; +#endif + }; + + union + { +#ifdef MA_WIN32 + struct + { + /*HMODULE*/ ma_handle hOle32DLL; + ma_proc CoInitializeEx; + ma_proc CoUninitialize; + ma_proc CoCreateInstance; + ma_proc CoTaskMemFree; + ma_proc PropVariantClear; + ma_proc StringFromGUID2; + + /*HMODULE*/ ma_handle hUser32DLL; + ma_proc GetForegroundWindow; + ma_proc GetDesktopWindow; + + /*HMODULE*/ ma_handle hAdvapi32DLL; + ma_proc RegOpenKeyExA; + ma_proc RegCloseKey; + ma_proc RegQueryValueExA; + } win32; +#endif +#ifdef MA_POSIX + struct + { + ma_handle pthreadSO; + ma_proc pthread_create; + ma_proc pthread_join; + ma_proc pthread_mutex_init; + ma_proc pthread_mutex_destroy; + ma_proc pthread_mutex_lock; + ma_proc pthread_mutex_unlock; + ma_proc pthread_cond_init; + ma_proc pthread_cond_destroy; + ma_proc pthread_cond_wait; + ma_proc pthread_cond_signal; + ma_proc pthread_attr_init; + ma_proc pthread_attr_destroy; + ma_proc pthread_attr_setschedpolicy; + ma_proc pthread_attr_getschedparam; + ma_proc pthread_attr_setschedparam; + } posix; +#endif + int _unused; + }; +}; + +struct ma_device +{ + ma_context* pContext; + ma_device_type type; + ma_uint32 sampleRate; + volatile ma_uint32 state; /* The state of the device is variable and can change at any time on any thread, so tell the compiler as such with `volatile`. */ + ma_device_callback_proc onData; /* Set once at initialization time and should not be changed after. */ + ma_stop_proc onStop; /* Set once at initialization time and should not be changed after. */ + void* pUserData; /* Application defined data. */ + ma_mutex lock; + ma_event wakeupEvent; + ma_event startEvent; + ma_event stopEvent; + ma_thread thread; + ma_result workResult; /* This is set by the worker thread after it's finished doing a job. */ + ma_bool32 usingDefaultSampleRate : 1; + ma_bool32 usingDefaultBufferSize : 1; + ma_bool32 usingDefaultPeriods : 1; + ma_bool32 isOwnerOfContext : 1; /* When set to true, uninitializing the device will also uninitialize the context. Set to true when NULL is passed into ma_device_init(). */ + ma_bool32 noPreZeroedOutputBuffer : 1; + ma_bool32 noClip : 1; + volatile float masterVolumeFactor; /* Volatile so we can use some thread safety when applying volume to periods. */ + struct + { + ma_resample_algorithm algorithm; + struct + { + ma_uint32 lpfOrder; + } linear; + struct + { + int quality; + } speex; + } resampling; + struct + { + char name[256]; /* Maybe temporary. Likely to be replaced with a query API. */ + ma_share_mode shareMode; /* Set to whatever was passed in when the device was initialized. */ + ma_bool32 usingDefaultFormat : 1; + ma_bool32 usingDefaultChannels : 1; + ma_bool32 usingDefaultChannelMap : 1; + ma_format format; + ma_uint32 channels; + ma_channel channelMap[MA_MAX_CHANNELS]; + ma_format internalFormat; + ma_uint32 internalChannels; + ma_uint32 internalSampleRate; + ma_channel internalChannelMap[MA_MAX_CHANNELS]; + ma_uint32 internalPeriodSizeInFrames; + ma_uint32 internalPeriods; + ma_data_converter converter; + } playback; + struct + { + char name[256]; /* Maybe temporary. Likely to be replaced with a query API. */ + ma_share_mode shareMode; /* Set to whatever was passed in when the device was initialized. */ + ma_bool32 usingDefaultFormat : 1; + ma_bool32 usingDefaultChannels : 1; + ma_bool32 usingDefaultChannelMap : 1; + ma_format format; + ma_uint32 channels; + ma_channel channelMap[MA_MAX_CHANNELS]; + ma_format internalFormat; + ma_uint32 internalChannels; + ma_uint32 internalSampleRate; + ma_channel internalChannelMap[MA_MAX_CHANNELS]; + ma_uint32 internalPeriodSizeInFrames; + ma_uint32 internalPeriods; + ma_data_converter converter; + } capture; + + union + { +#ifdef MA_SUPPORT_WASAPI + struct + { + /*IAudioClient**/ ma_ptr pAudioClientPlayback; + /*IAudioClient**/ ma_ptr pAudioClientCapture; + /*IAudioRenderClient**/ ma_ptr pRenderClient; + /*IAudioCaptureClient**/ ma_ptr pCaptureClient; + /*IMMDeviceEnumerator**/ ma_ptr pDeviceEnumerator; /* Used for IMMNotificationClient notifications. Required for detecting default device changes. */ + ma_IMMNotificationClient notificationClient; + /*HANDLE*/ ma_handle hEventPlayback; /* Auto reset. Initialized to signaled. */ + /*HANDLE*/ ma_handle hEventCapture; /* Auto reset. Initialized to unsignaled. */ + ma_uint32 actualPeriodSizeInFramesPlayback; /* Value from GetBufferSize(). internalPeriodSizeInFrames is not set to the _actual_ buffer size when low-latency shared mode is being used due to the way the IAudioClient3 API works. */ + ma_uint32 actualPeriodSizeInFramesCapture; + ma_uint32 originalPeriodSizeInFrames; + ma_uint32 originalPeriodSizeInMilliseconds; + ma_uint32 originalPeriods; + ma_bool32 hasDefaultPlaybackDeviceChanged; /* <-- Make sure this is always a whole 32-bits because we use atomic assignments. */ + ma_bool32 hasDefaultCaptureDeviceChanged; /* <-- Make sure this is always a whole 32-bits because we use atomic assignments. */ + ma_uint32 periodSizeInFramesPlayback; + ma_uint32 periodSizeInFramesCapture; + ma_bool32 isStartedCapture; /* <-- Make sure this is always a whole 32-bits because we use atomic assignments. */ + ma_bool32 isStartedPlayback; /* <-- Make sure this is always a whole 32-bits because we use atomic assignments. */ + ma_bool32 noAutoConvertSRC : 1; /* When set to true, disables the use of AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM. */ + ma_bool32 noDefaultQualitySRC : 1; /* When set to true, disables the use of AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY. */ + ma_bool32 noHardwareOffloading : 1; + ma_bool32 allowCaptureAutoStreamRouting : 1; + ma_bool32 allowPlaybackAutoStreamRouting : 1; + } wasapi; +#endif +#ifdef MA_SUPPORT_DSOUND + struct + { + /*LPDIRECTSOUND*/ ma_ptr pPlayback; + /*LPDIRECTSOUNDBUFFER*/ ma_ptr pPlaybackPrimaryBuffer; + /*LPDIRECTSOUNDBUFFER*/ ma_ptr pPlaybackBuffer; + /*LPDIRECTSOUNDCAPTURE*/ ma_ptr pCapture; + /*LPDIRECTSOUNDCAPTUREBUFFER*/ ma_ptr pCaptureBuffer; + } dsound; +#endif +#ifdef MA_SUPPORT_WINMM + struct + { + /*HWAVEOUT*/ ma_handle hDevicePlayback; + /*HWAVEIN*/ ma_handle hDeviceCapture; + /*HANDLE*/ ma_handle hEventPlayback; + /*HANDLE*/ ma_handle hEventCapture; + ma_uint32 fragmentSizeInFrames; + ma_uint32 iNextHeaderPlayback; /* [0,periods). Used as an index into pWAVEHDRPlayback. */ + ma_uint32 iNextHeaderCapture; /* [0,periods). Used as an index into pWAVEHDRCapture. */ + ma_uint32 headerFramesConsumedPlayback; /* The number of PCM frames consumed in the buffer in pWAVEHEADER[iNextHeader]. */ + ma_uint32 headerFramesConsumedCapture; /* ^^^ */ + /*WAVEHDR**/ ma_uint8* pWAVEHDRPlayback; /* One instantiation for each period. */ + /*WAVEHDR**/ ma_uint8* pWAVEHDRCapture; /* One instantiation for each period. */ + ma_uint8* pIntermediaryBufferPlayback; + ma_uint8* pIntermediaryBufferCapture; + ma_uint8* _pHeapData; /* Used internally and is used for the heap allocated data for the intermediary buffer and the WAVEHDR structures. */ + } winmm; +#endif +#ifdef MA_SUPPORT_ALSA + struct + { + /*snd_pcm_t**/ ma_ptr pPCMPlayback; + /*snd_pcm_t**/ ma_ptr pPCMCapture; + ma_bool32 isUsingMMapPlayback : 1; + ma_bool32 isUsingMMapCapture : 1; + } alsa; +#endif +#ifdef MA_SUPPORT_PULSEAUDIO + struct + { + /*pa_mainloop**/ ma_ptr pMainLoop; + /*pa_mainloop_api**/ ma_ptr pAPI; + /*pa_context**/ ma_ptr pPulseContext; + /*pa_stream**/ ma_ptr pStreamPlayback; + /*pa_stream**/ ma_ptr pStreamCapture; + /*pa_context_state*/ ma_uint32 pulseContextState; + void* pMappedBufferPlayback; + const void* pMappedBufferCapture; + ma_uint32 mappedBufferFramesRemainingPlayback; + ma_uint32 mappedBufferFramesRemainingCapture; + ma_uint32 mappedBufferFramesCapacityPlayback; + ma_uint32 mappedBufferFramesCapacityCapture; + ma_bool32 breakFromMainLoop : 1; + } pulse; +#endif +#ifdef MA_SUPPORT_JACK + struct + { + /*jack_client_t**/ ma_ptr pClient; + /*jack_port_t**/ ma_ptr pPortsPlayback[MA_MAX_CHANNELS]; + /*jack_port_t**/ ma_ptr pPortsCapture[MA_MAX_CHANNELS]; + float* pIntermediaryBufferPlayback; /* Typed as a float because JACK is always floating point. */ + float* pIntermediaryBufferCapture; + ma_pcm_rb duplexRB; + } jack; +#endif +#ifdef MA_SUPPORT_COREAUDIO + struct + { + ma_uint32 deviceObjectIDPlayback; + ma_uint32 deviceObjectIDCapture; + /*AudioUnit*/ ma_ptr audioUnitPlayback; + /*AudioUnit*/ ma_ptr audioUnitCapture; + /*AudioBufferList**/ ma_ptr pAudioBufferList; /* Only used for input devices. */ + ma_event stopEvent; + ma_uint32 originalPeriodSizeInFrames; + ma_uint32 originalPeriodSizeInMilliseconds; + ma_uint32 originalPeriods; + ma_bool32 isDefaultPlaybackDevice; + ma_bool32 isDefaultCaptureDevice; + ma_bool32 isSwitchingPlaybackDevice; /* <-- Set to true when the default device has changed and miniaudio is in the process of switching. */ + ma_bool32 isSwitchingCaptureDevice; /* <-- Set to true when the default device has changed and miniaudio is in the process of switching. */ + ma_pcm_rb duplexRB; + void* pRouteChangeHandler; /* Only used on mobile platforms. Obj-C object for handling route changes. */ + } coreaudio; +#endif +#ifdef MA_SUPPORT_SNDIO + struct + { + ma_ptr handlePlayback; + ma_ptr handleCapture; + ma_bool32 isStartedPlayback; + ma_bool32 isStartedCapture; + } sndio; +#endif +#ifdef MA_SUPPORT_AUDIO4 + struct + { + int fdPlayback; + int fdCapture; + } audio4; +#endif +#ifdef MA_SUPPORT_OSS + struct + { + int fdPlayback; + int fdCapture; + } oss; +#endif +#ifdef MA_SUPPORT_AAUDIO + struct + { + /*AAudioStream**/ ma_ptr pStreamPlayback; + /*AAudioStream**/ ma_ptr pStreamCapture; + ma_pcm_rb duplexRB; + } aaudio; +#endif +#ifdef MA_SUPPORT_OPENSL + struct + { + /*SLObjectItf*/ ma_ptr pOutputMixObj; + /*SLOutputMixItf*/ ma_ptr pOutputMix; + /*SLObjectItf*/ ma_ptr pAudioPlayerObj; + /*SLPlayItf*/ ma_ptr pAudioPlayer; + /*SLObjectItf*/ ma_ptr pAudioRecorderObj; + /*SLRecordItf*/ ma_ptr pAudioRecorder; + /*SLAndroidSimpleBufferQueueItf*/ ma_ptr pBufferQueuePlayback; + /*SLAndroidSimpleBufferQueueItf*/ ma_ptr pBufferQueueCapture; + ma_bool32 isDrainingCapture; + ma_bool32 isDrainingPlayback; + ma_uint32 currentBufferIndexPlayback; + ma_uint32 currentBufferIndexCapture; + ma_uint8* pBufferPlayback; /* This is malloc()'d and is used for storing audio data. Typed as ma_uint8 for easy offsetting. */ + ma_uint8* pBufferCapture; + ma_pcm_rb duplexRB; + } opensl; +#endif +#ifdef MA_SUPPORT_WEBAUDIO + struct + { + int indexPlayback; /* We use a factory on the JavaScript side to manage devices and use an index for JS/C interop. */ + int indexCapture; + ma_pcm_rb duplexRB; /* In external capture format. */ + } webaudio; +#endif +#ifdef MA_SUPPORT_NULL + struct + { + ma_thread deviceThread; + ma_event operationEvent; + ma_event operationCompletionEvent; + ma_uint32 operation; + ma_result operationResult; + ma_timer timer; + double priorRunTime; + ma_uint32 currentPeriodFramesRemainingPlayback; + ma_uint32 currentPeriodFramesRemainingCapture; + ma_uint64 lastProcessedFramePlayback; + ma_uint32 lastProcessedFrameCapture; + ma_bool32 isStarted; + } null_device; +#endif + }; +}; +#if defined(_MSC_VER) && !defined(__clang__) + #pragma warning(pop) +#else + #pragma GCC diagnostic pop /* For ISO C99 doesn't support unnamed structs/unions [-Wpedantic] */ +#endif + +/* +Initializes a `ma_context_config` object. + + +Return Value +------------ +A `ma_context_config` initialized to defaults. + + +Remarks +------- +You must always use this to initialize the default state of the `ma_context_config` object. Not using this will result in your program breaking when miniaudio +is updated and new members are added to `ma_context_config`. It also sets logical defaults. + +You can override members of the returned object by changing it's members directly. + + +See Also +-------- +ma_context_init() +*/ +MA_API ma_context_config ma_context_config_init(void); + +/* +Initializes a context. + +The context is used for selecting and initializing an appropriate backend and to represent the backend at a more global level than that of an individual +device. There is one context to many devices, and a device is created from a context. A context is required to enumerate devices. + + +Parameters +---------- +backends (in, optional) + A list of backends to try initializing, in priority order. Can be NULL, in which case it uses default priority order. + +backendCount (in, optional) + The number of items in `backend`. Ignored if `backend` is NULL. + +pConfig (in, optional) + The context configuration. + +pContext (in) + A pointer to the context object being initialized. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Unsafe. Do not call this function across multiple threads as some backends read and write to global state. + + +Remarks +------- +When `backends` is NULL, the default priority order will be used. Below is a list of backends in priority order: + + |-------------|-----------------------|--------------------------------------------------------| + | Name | Enum Name | Supported Operating Systems | + |-------------|-----------------------|--------------------------------------------------------| + | WASAPI | ma_backend_wasapi | Windows Vista+ | + | DirectSound | ma_backend_dsound | Windows XP+ | + | WinMM | ma_backend_winmm | Windows XP+ (may work on older versions, but untested) | + | Core Audio | ma_backend_coreaudio | macOS, iOS | + | ALSA | ma_backend_alsa | Linux | + | PulseAudio | ma_backend_pulseaudio | Cross Platform (disabled on Windows, BSD and Android) | + | JACK | ma_backend_jack | Cross Platform (disabled on BSD and Android) | + | sndio | ma_backend_sndio | OpenBSD | + | audio(4) | ma_backend_audio4 | NetBSD, OpenBSD | + | OSS | ma_backend_oss | FreeBSD | + | AAudio | ma_backend_aaudio | Android 8+ | + | OpenSL|ES | ma_backend_opensl | Android (API level 16+) | + | Web Audio | ma_backend_webaudio | Web (via Emscripten) | + | Null | ma_backend_null | Cross Platform (not used on Web) | + |-------------|-----------------------|--------------------------------------------------------| + +The context can be configured via the `pConfig` argument. The config object is initialized with `ma_context_config_init()`. Individual configuration settings +can then be set directly on the structure. Below are the members of the `ma_context_config` object. + + logCallback + Callback for handling log messages from miniaudio. + + threadPriority + The desired priority to use for the audio thread. Allowable values include the following: + + |--------------------------------------| + | Thread Priority | + |--------------------------------------| + | ma_thread_priority_idle | + | ma_thread_priority_lowest | + | ma_thread_priority_low | + | ma_thread_priority_normal | + | ma_thread_priority_high | + | ma_thread_priority_highest (default) | + | ma_thread_priority_realtime | + | ma_thread_priority_default | + |--------------------------------------| + + pUserData + A pointer to application-defined data. This can be accessed from the context object directly such as `context.pUserData`. + + allocationCallbacks + Structure containing custom allocation callbacks. Leaving this at defaults will cause it to use MA_MALLOC, MA_REALLOC and MA_FREE. These allocation + callbacks will be used for anything tied to the context, including devices. + + alsa.useVerboseDeviceEnumeration + ALSA will typically enumerate many different devices which can be intrusive and not user-friendly. To combat this, miniaudio will enumerate only unique + card/device pairs by default. The problem with this is that you lose a bit of flexibility and control. Setting alsa.useVerboseDeviceEnumeration makes + it so the ALSA backend includes all devices. Defaults to false. + + pulse.pApplicationName + PulseAudio only. The application name to use when initializing the PulseAudio context with `pa_context_new()`. + + pulse.pServerName + PulseAudio only. The name of the server to connect to with `pa_context_connect()`. + + pulse.tryAutoSpawn + PulseAudio only. Whether or not to try automatically starting the PulseAudio daemon. Defaults to false. If you set this to true, keep in mind that + miniaudio uses a trial and error method to find the most appropriate backend, and this will result in the PulseAudio daemon starting which may be + intrusive for the end user. + + coreaudio.sessionCategory + iOS only. The session category to use for the shared AudioSession instance. Below is a list of allowable values and their Core Audio equivalents. + + |-----------------------------------------|-------------------------------------| + | miniaudio Token | Core Audio Token | + |-----------------------------------------|-------------------------------------| + | ma_ios_session_category_ambient | AVAudioSessionCategoryAmbient | + | ma_ios_session_category_solo_ambient | AVAudioSessionCategorySoloAmbient | + | ma_ios_session_category_playback | AVAudioSessionCategoryPlayback | + | ma_ios_session_category_record | AVAudioSessionCategoryRecord | + | ma_ios_session_category_play_and_record | AVAudioSessionCategoryPlayAndRecord | + | ma_ios_session_category_multi_route | AVAudioSessionCategoryMultiRoute | + | ma_ios_session_category_none | AVAudioSessionCategoryAmbient | + | ma_ios_session_category_default | AVAudioSessionCategoryAmbient | + |-----------------------------------------|-------------------------------------| + + coreaudio.sessionCategoryOptions + iOS only. Session category options to use with the shared AudioSession instance. Below is a list of allowable values and their Core Audio equivalents. + + |---------------------------------------------------------------------------|------------------------------------------------------------------| + | miniaudio Token | Core Audio Token | + |---------------------------------------------------------------------------|------------------------------------------------------------------| + | ma_ios_session_category_option_mix_with_others | AVAudioSessionCategoryOptionMixWithOthers | + | ma_ios_session_category_option_duck_others | AVAudioSessionCategoryOptionDuckOthers | + | ma_ios_session_category_option_allow_bluetooth | AVAudioSessionCategoryOptionAllowBluetooth | + | ma_ios_session_category_option_default_to_speaker | AVAudioSessionCategoryOptionDefaultToSpeaker | + | ma_ios_session_category_option_interrupt_spoken_audio_and_mix_with_others | AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers | + | ma_ios_session_category_option_allow_bluetooth_a2dp | AVAudioSessionCategoryOptionAllowBluetoothA2DP | + | ma_ios_session_category_option_allow_air_play | AVAudioSessionCategoryOptionAllowAirPlay | + |---------------------------------------------------------------------------|------------------------------------------------------------------| + + jack.pClientName + The name of the client to pass to `jack_client_open()`. + + jack.tryStartServer + Whether or not to try auto-starting the JACK server. Defaults to false. + + +It is recommended that only a single context is active at any given time because it's a bulky data structure which performs run-time linking for the +relevant backends every time it's initialized. + +The location of the context cannot change throughout it's lifetime. Consider allocating the `ma_context` object with `malloc()` if this is an issue. The +reason for this is that a pointer to the context is stored in the `ma_device` structure. + + +Example 1 - Default Initialization +---------------------------------- +The example below shows how to initialize the context using the default configuration. + +```c +ma_context context; +ma_result result = ma_context_init(NULL, 0, NULL, &context); +if (result != MA_SUCCESS) { + // Error. +} +``` + + +Example 2 - Custom Configuration +-------------------------------- +The example below shows how to initialize the context using custom backend priorities and a custom configuration. In this hypothetical example, the program +wants to prioritize ALSA over PulseAudio on Linux. They also want to avoid using the WinMM backend on Windows because it's latency is too high. They also +want an error to be returned if no valid backend is available which they achieve by excluding the Null backend. + +For the configuration, the program wants to capture any log messages so they can, for example, route it to a log file and user interface. + +```c +ma_backend backends[] = { + ma_backend_alsa, + ma_backend_pulseaudio, + ma_backend_wasapi, + ma_backend_dsound +}; + +ma_context_config config = ma_context_config_init(); +config.logCallback = my_log_callback; +config.pUserData = pMyUserData; + +ma_context context; +ma_result result = ma_context_init(backends, sizeof(backends)/sizeof(backends[0]), &config, &context); +if (result != MA_SUCCESS) { + // Error. + if (result == MA_NO_BACKEND) { + // Couldn't find an appropriate backend. + } +} +``` + + +See Also +-------- +ma_context_config_init() +ma_context_uninit() +*/ +MA_API ma_result ma_context_init(const ma_backend backends[], ma_uint32 backendCount, const ma_context_config* pConfig, ma_context* pContext); + +/* +Uninitializes a context. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Unsafe. Do not call this function across multiple threads as some backends read and write to global state. + + +Remarks +------- +Results are undefined if you call this while any device created by this context is still active. + + +See Also +-------- +ma_context_init() +*/ +MA_API ma_result ma_context_uninit(ma_context* pContext); + +/* +Retrieves the size of the ma_context object. + +This is mainly for the purpose of bindings to know how much memory to allocate. +*/ +MA_API size_t ma_context_sizeof(); + +/* +Enumerates over every device (both playback and capture). + +This is a lower-level enumeration function to the easier to use `ma_context_get_devices()`. Use `ma_context_enumerate_devices()` if you would rather not incur +an internal heap allocation, or it simply suits your code better. + +Note that this only retrieves the ID and name/description of the device. The reason for only retrieving basic information is that it would otherwise require +opening the backend device in order to probe it for more detailed information which can be inefficient. Consider using `ma_context_get_device_info()` for this, +but don't call it from within the enumeration callback. + +Returning false from the callback will stop enumeration. Returning true will continue enumeration. + + +Parameters +---------- +pContext (in) + A pointer to the context performing the enumeration. + +callback (in) + The callback to fire for each enumerated device. + +pUserData (in) + A pointer to application-defined data passed to the callback. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Safe. This is guarded using a simple mutex lock. + + +Remarks +------- +Do _not_ assume the first enumerated device of a given type is the default device. + +Some backends and platforms may only support default playback and capture devices. + +In general, you should not do anything complicated from within the callback. In particular, do not try initializing a device from within the callback. Also, +do not try to call `ma_context_get_device_info()` from within the callback. + +Consider using `ma_context_get_devices()` for a simpler and safer API, albeit at the expense of an internal heap allocation. + + +Example 1 - Simple Enumeration +------------------------------ +ma_bool32 ma_device_enum_callback(ma_context* pContext, ma_device_type deviceType, const ma_device_info* pInfo, void* pUserData) +{ + printf("Device Name: %s\n", pInfo->name); + return MA_TRUE; +} + +ma_result result = ma_context_enumerate_devices(&context, my_device_enum_callback, pMyUserData); +if (result != MA_SUCCESS) { + // Error. +} + + +See Also +-------- +ma_context_get_devices() +*/ +MA_API ma_result ma_context_enumerate_devices(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData); + +/* +Retrieves basic information about every active playback and/or capture device. + +This function will allocate memory internally for the device lists and return a pointer to them through the `ppPlaybackDeviceInfos` and `ppCaptureDeviceInfos` +parameters. If you do not want to incur the overhead of these allocations consider using `ma_context_enumerate_devices()` which will instead use a callback. + + +Parameters +---------- +pContext (in) + A pointer to the context performing the enumeration. + +ppPlaybackDeviceInfos (out) + A pointer to a pointer that will receive the address of a buffer containing the list of `ma_device_info` structures for playback devices. + +pPlaybackDeviceCount (out) + A pointer to an unsigned integer that will receive the number of playback devices. + +ppCaptureDeviceInfos (out) + A pointer to a pointer that will receive the address of a buffer containing the list of `ma_device_info` structures for capture devices. + +pCaptureDeviceCount (out) + A pointer to an unsigned integer that will receive the number of capture devices. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Unsafe. Since each call to this function invalidates the pointers from the previous call, you should not be calling this simultaneously across multiple +threads. Instead, you need to make a copy of the returned data with your own higher level synchronization. + + +Remarks +------- +It is _not_ safe to assume the first device in the list is the default device. + +You can pass in NULL for the playback or capture lists in which case they'll be ignored. + +The returned pointers will become invalid upon the next call this this function, or when the context is uninitialized. Do not free the returned pointers. + + +See Also +-------- +ma_context_get_devices() +*/ +MA_API ma_result ma_context_get_devices(ma_context* pContext, ma_device_info** ppPlaybackDeviceInfos, ma_uint32* pPlaybackDeviceCount, ma_device_info** ppCaptureDeviceInfos, ma_uint32* pCaptureDeviceCount); + +/* +Retrieves information about a device of the given type, with the specified ID and share mode. + + +Parameters +---------- +pContext (in) + A pointer to the context performing the query. + +deviceType (in) + The type of the device being queried. Must be either `ma_device_type_playback` or `ma_device_type_capture`. + +pDeviceID (in) + The ID of the device being queried. + +shareMode (in) + The share mode to query for device capabilities. This should be set to whatever you're intending on using when initializing the device. If you're unsure, + set this to `ma_share_mode_shared`. + +pDeviceInfo (out) + A pointer to the `ma_device_info` structure that will receive the device information. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Safe. This is guarded using a simple mutex lock. + + +Remarks +------- +Do _not_ call this from within the `ma_context_enumerate_devices()` callback. + +It's possible for a device to have different information and capabilities depending on whether or not it's opened in shared or exclusive mode. For example, in +shared mode, WASAPI always uses floating point samples for mixing, but in exclusive mode it can be anything. Therefore, this function allows you to specify +which share mode you want information for. Note that not all backends and devices support shared or exclusive mode, in which case this function will fail if +the requested share mode is unsupported. + +This leaves pDeviceInfo unmodified in the result of an error. +*/ +MA_API ma_result ma_context_get_device_info(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_share_mode shareMode, ma_device_info* pDeviceInfo); + +/* +Determines if the given context supports loopback mode. + + +Parameters +---------- +pContext (in) + A pointer to the context getting queried. + + +Return Value +------------ +MA_TRUE if the context supports loopback mode; MA_FALSE otherwise. +*/ +MA_API ma_bool32 ma_context_is_loopback_supported(ma_context* pContext); + + + +/* +Initializes a device config with default settings. + + +Parameters +---------- +deviceType (in) + The type of the device this config is being initialized for. This must set to one of the following: + + |-------------------------| + | Device Type | + |-------------------------| + | ma_device_type_playback | + | ma_device_type_capture | + | ma_device_type_duplex | + | ma_device_type_loopback | + |-------------------------| + + +Return Value +------------ +A new device config object with default settings. You will typically want to adjust the config after this function returns. See remarks. + + +Thread Safety +------------- +Safe. + + +Callback Safety +--------------- +Safe, but don't try initializing a device in a callback. + + +Remarks +------- +The returned config will be initialized to defaults. You will normally want to customize a few variables before initializing the device. See Example 1 for a +typical configuration which sets the sample format, channel count, sample rate, data callback and user data. These are usually things you will want to change +before initializing the device. + +See `ma_device_init()` for details on specific configuration options. + + +Example 1 - Simple Configuration +-------------------------------- +The example below is what a program will typically want to configure for each device at a minimum. Notice how `ma_device_config_init()` is called first, and +then the returned object is modified directly. This is important because it ensures that your program continues to work as new configuration options are added +to the `ma_device_config` structure. + +```c +ma_device_config config = ma_device_config_init(ma_device_type_playback); +config.playback.format = ma_format_f32; +config.playback.channels = 2; +config.sampleRate = 48000; +config.dataCallback = ma_data_callback; +config.pUserData = pMyUserData; +``` + + +See Also +-------- +ma_device_init() +ma_device_init_ex() +*/ +MA_API ma_device_config ma_device_config_init(ma_device_type deviceType); + + +/* +Initializes a device. + +A device represents a physical audio device. The idea is you send or receive audio data from the device to either play it back through a speaker, or capture it +from a microphone. Whether or not you should send or receive data from the device (or both) depends on the type of device you are initializing which can be +playback, capture, full-duplex or loopback. (Note that loopback mode is only supported on select backends.) Sending and receiving audio data to and from the +device is done via a callback which is fired by miniaudio at periodic time intervals. + +The frequency at which data is delivered to and from a device depends on the size of it's period. The size of the period can be defined in terms of PCM frames +or milliseconds, whichever is more convenient. Generally speaking, the smaller the period, the lower the latency at the expense of higher CPU usage and +increased risk of glitching due to the more frequent and granular data deliver intervals. The size of a period will depend on your requirements, but +miniaudio's defaults should work fine for most scenarios. If you're building a game you should leave this fairly small, whereas if you're building a simple +media player you can make it larger. Note that the period size you request is actually just a hint - miniaudio will tell the backend what you want, but the +backend is ultimately responsible for what it gives you. You cannot assume you will get exactly what you ask for. + +When delivering data to and from a device you need to make sure it's in the correct format which you can set through the device configuration. You just set the +format that you want to use and miniaudio will perform all of the necessary conversion for you internally. When delivering data to and from the callback you +can assume the format is the same as what you requested when you initialized the device. See Remarks for more details on miniaudio's data conversion pipeline. + + +Parameters +---------- +pContext (in, optional) + A pointer to the context that owns the device. This can be null, in which case it creates a default context internally. + +pConfig (in) + A pointer to the device configuration. Cannot be null. See remarks for details. + +pDevice (out) + A pointer to the device object being initialized. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Unsafe. It is not safe to call this function simultaneously for different devices because some backends depend on and mutate global state. The same applies to +calling this at the same time as `ma_device_uninit()`. + + +Callback Safety +--------------- +Unsafe. It is not safe to call this inside any callback. + + +Remarks +------- +Setting `pContext` to NULL will result in miniaudio creating a default context internally and is equivalent to passing in a context initialized like so: + + ```c + ma_context_init(NULL, 0, NULL, &context); + ``` + +Do not set `pContext` to NULL if you are needing to open multiple devices. You can, however, use NULL when initializing the first device, and then use +device.pContext for the initialization of other devices. + +The device can be configured via the `pConfig` argument. The config object is initialized with `ma_device_config_init()`. Individual configuration settings can +then be set directly on the structure. Below are the members of the `ma_device_config` object. + + deviceType + Must be `ma_device_type_playback`, `ma_device_type_capture`, `ma_device_type_duplex` of `ma_device_type_loopback`. + + sampleRate + The sample rate, in hertz. The most common sample rates are 48000 and 44100. Setting this to 0 will use the device's native sample rate. + + periodSizeInFrames + The desired size of a period in PCM frames. If this is 0, `periodSizeInMilliseconds` will be used instead. If both are 0 the default buffer size will + be used depending on the selected performance profile. This value affects latency. See below for details. + + periodSizeInMilliseconds + The desired size of a period in milliseconds. If this is 0, `periodSizeInFrames` will be used instead. If both are 0 the default buffer size will be + used depending on the selected performance profile. The value affects latency. See below for details. + + periods + The number of periods making up the device's entire buffer. The total buffer size is `periodSizeInFrames` or `periodSizeInMilliseconds` multiplied by + this value. This is just a hint as backends will be the ones who ultimately decide how your periods will be configured. + + performanceProfile + A hint to miniaudio as to the performance requirements of your program. Can be either `ma_performance_profile_low_latency` (default) or + `ma_performance_profile_conservative`. This mainly affects the size of default buffers and can usually be left at it's default value. + + noPreZeroedOutputBuffer + When set to true, the contents of the output buffer passed into the data callback will be left undefined. When set to false (default), the contents of + the output buffer will be cleared the zero. You can use this to avoid the overhead of zeroing out the buffer if you can guarantee that your data + callback will write to every sample in the output buffer, or if you are doing your own clearing. + + noClip + When set to true, the contents of the output buffer passed into the data callback will be clipped after returning. When set to false (default), the + contents of the output buffer are left alone after returning and it will be left up to the backend itself to decide whether or not the clip. This only + applies when the playback sample format is f32. + + dataCallback + The callback to fire whenever data is ready to be delivered to or from the device. + + stopCallback + The callback to fire whenever the device has stopped, either explicitly via `ma_device_stop()`, or implicitly due to things like the device being + disconnected. + + pUserData + The user data pointer to use with the device. You can access this directly from the device object like `device.pUserData`. + + resampling.algorithm + The resampling algorithm to use when miniaudio needs to perform resampling between the rate specified by `sampleRate` and the device's native rate. The + default value is `ma_resample_algorithm_linear`, and the quality can be configured with `resampling.linear.lpfOrder`. + + resampling.linear.lpfOrder + The linear resampler applies a low-pass filter as part of it's procesing for anti-aliasing. This setting controls the order of the filter. The higher + the value, the better the quality, in general. Setting this to 0 will disable low-pass filtering altogether. The maximum value is + `MA_MAX_FILTER_ORDER`. The default value is `min(4, MA_MAX_FILTER_ORDER)`. + + playback.pDeviceID + A pointer to a `ma_device_id` structure containing the ID of the playback device to initialize. Setting this NULL (default) will use the system's + default playback device. Retrieve the device ID from the `ma_device_info` structure, which can be retrieved using device enumeration. + + playback.format + The sample format to use for playback. When set to `ma_format_unknown` the device's native format will be used. This can be retrieved after + initialization from the device object directly with `device.playback.format`. + + playback.channels + The number of channels to use for playback. When set to 0 the device's native channel count will be used. This can be retrieved after initialization + from the device object directly with `device.playback.channels`. + + playback.channelMap + The channel map to use for playback. When left empty, the device's native channel map will be used. This can be retrieved after initialization from the + device object direct with `device.playback.channelMap`. + + playback.shareMode + The preferred share mode to use for playback. Can be either `ma_share_mode_shared` (default) or `ma_share_mode_exclusive`. Note that if you specify + exclusive mode, but it's not supported by the backend, initialization will fail. You can then fall back to shared mode if desired by changing this to + ma_share_mode_shared and reinitializing. + + capture.pDeviceID + A pointer to a `ma_device_id` structure containing the ID of the capture device to initialize. Setting this NULL (default) will use the system's + default capture device. Retrieve the device ID from the `ma_device_info` structure, which can be retrieved using device enumeration. + + capture.format + The sample format to use for capture. When set to `ma_format_unknown` the device's native format will be used. This can be retrieved after + initialization from the device object directly with `device.capture.format`. + + capture.channels + The number of channels to use for capture. When set to 0 the device's native channel count will be used. This can be retrieved after initialization + from the device object directly with `device.capture.channels`. + + capture.channelMap + The channel map to use for capture. When left empty, the device's native channel map will be used. This can be retrieved after initialization from the + device object direct with `device.capture.channelMap`. + + capture.shareMode + The preferred share mode to use for capture. Can be either `ma_share_mode_shared` (default) or `ma_share_mode_exclusive`. Note that if you specify + exclusive mode, but it's not supported by the backend, initialization will fail. You can then fall back to shared mode if desired by changing this to + ma_share_mode_shared and reinitializing. + + wasapi.noAutoConvertSRC + WASAPI only. When set to true, disables WASAPI's automatic resampling and forces the use of miniaudio's resampler. Defaults to false. + + wasapi.noDefaultQualitySRC + WASAPI only. Only used when `wasapi.noAutoConvertSRC` is set to false. When set to true, disables the use of `AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY`. + You should usually leave this set to false, which is the default. + + wasapi.noAutoStreamRouting + WASAPI only. When set to true, disables automatic stream routing on the WASAPI backend. Defaults to false. + + wasapi.noHardwareOffloading + WASAPI only. When set to true, disables the use of WASAPI's hardware offloading feature. Defaults to false. + + alsa.noMMap + ALSA only. When set to true, disables MMap mode. Defaults to false. + + alsa.noAutoFormat + ALSA only. When set to true, disables ALSA's automatic format conversion by including the SND_PCM_NO_AUTO_FORMAT flag. Defaults to false. + + alsa.noAutoChannels + ALSA only. When set to true, disables ALSA's automatic channel conversion by including the SND_PCM_NO_AUTO_CHANNELS flag. Defaults to false. + + alsa.noAutoResample + ALSA only. When set to true, disables ALSA's automatic resampling by including the SND_PCM_NO_AUTO_RESAMPLE flag. Defaults to false. + + pulse.pStreamNamePlayback + PulseAudio only. Sets the stream name for playback. + + pulse.pStreamNameCapture + PulseAudio only. Sets the stream name for capture. + + +Once initialized, the device's config is immutable. If you need to change the config you will need to initialize a new device. + +After initializing the device it will be in a stopped state. To start it, use `ma_device_start()`. + +If both `periodSizeInFrames` and `periodSizeInMilliseconds` are set to zero, it will default to `MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY` or +`MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE`, depending on whether or not `performanceProfile` is set to `ma_performance_profile_low_latency` or +`ma_performance_profile_conservative`. + +If you request exclusive mode and the backend does not support it an error will be returned. For robustness, you may want to first try initializing the device +in exclusive mode, and then fall back to shared mode if required. Alternatively you can just request shared mode (the default if you leave it unset in the +config) which is the most reliable option. Some backends do not have a practical way of choosing whether or not the device should be exclusive or not (ALSA, +for example) in which case it just acts as a hint. Unless you have special requirements you should try avoiding exclusive mode as it's intrusive to the user. +Starting with Windows 10, miniaudio will use low-latency shared mode where possible which may make exclusive mode unnecessary. + +When sending or receiving data to/from a device, miniaudio will internally perform a format conversion to convert between the format specified by the config +and the format used internally by the backend. If you pass in 0 for the sample format, channel count, sample rate _and_ channel map, data transmission will run +on an optimized pass-through fast path. You can retrieve the format, channel count and sample rate by inspecting the `playback/capture.format`, +`playback/capture.channels` and `sampleRate` members of the device object. + +When compiling for UWP you must ensure you call this function on the main UI thread because the operating system may need to present the user with a message +asking for permissions. Please refer to the official documentation for ActivateAudioInterfaceAsync() for more information. + +ALSA Specific: When initializing the default device, requesting shared mode will try using the "dmix" device for playback and the "dsnoop" device for capture. +If these fail it will try falling back to the "hw" device. + + +Example 1 - Simple Initialization +--------------------------------- +This example shows how to initialize a simple playback device using a standard configuration. If you are just needing to do simple playback from the default +playback device this is usually all you need. + +```c +ma_device_config config = ma_device_config_init(ma_device_type_playback); +config.playback.format = ma_format_f32; +config.playback.channels = 2; +config.sampleRate = 48000; +config.dataCallback = ma_data_callback; +config.pMyUserData = pMyUserData; + +ma_device device; +ma_result result = ma_device_init(NULL, &config, &device); +if (result != MA_SUCCESS) { + // Error +} +``` + + +Example 2 - Advanced Initialization +----------------------------------- +This example shows how you might do some more advanced initialization. In this hypothetical example we want to control the latency by setting the buffer size +and period count. We also want to allow the user to be able to choose which device to output from which means we need a context so we can perform device +enumeration. + +```c +ma_context context; +ma_result result = ma_context_init(NULL, 0, NULL, &context); +if (result != MA_SUCCESS) { + // Error +} + +ma_device_info* pPlaybackDeviceInfos; +ma_uint32 playbackDeviceCount; +result = ma_context_get_devices(&context, &pPlaybackDeviceInfos, &playbackDeviceCount, NULL, NULL); +if (result != MA_SUCCESS) { + // Error +} + +// ... choose a device from pPlaybackDeviceInfos ... + +ma_device_config config = ma_device_config_init(ma_device_type_playback); +config.playback.pDeviceID = pMyChosenDeviceID; // <-- Get this from the `id` member of one of the `ma_device_info` objects returned by ma_context_get_devices(). +config.playback.format = ma_format_f32; +config.playback.channels = 2; +config.sampleRate = 48000; +config.dataCallback = ma_data_callback; +config.pUserData = pMyUserData; +config.periodSizeInMilliseconds = 10; +config.periods = 3; + +ma_device device; +result = ma_device_init(&context, &config, &device); +if (result != MA_SUCCESS) { + // Error +} +``` + + +See Also +-------- +ma_device_config_init() +ma_device_uninit() +ma_device_start() +ma_context_init() +ma_context_get_devices() +ma_context_enumerate_devices() +*/ +MA_API ma_result ma_device_init(ma_context* pContext, const ma_device_config* pConfig, ma_device* pDevice); + +/* +Initializes a device without a context, with extra parameters for controlling the configuration of the internal self-managed context. + +This is the same as `ma_device_init()`, only instead of a context being passed in, the parameters from `ma_context_init()` are passed in instead. This function +allows you to configure the internally created context. + + +Parameters +---------- +backends (in, optional) + A list of backends to try initializing, in priority order. Can be NULL, in which case it uses default priority order. + +backendCount (in, optional) + The number of items in `backend`. Ignored if `backend` is NULL. + +pContextConfig (in, optional) + The context configuration. + +pConfig (in) + A pointer to the device configuration. Cannot be null. See remarks for details. + +pDevice (out) + A pointer to the device object being initialized. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Unsafe. It is not safe to call this function simultaneously for different devices because some backends depend on and mutate global state. The same applies to +calling this at the same time as `ma_device_uninit()`. + + +Callback Safety +--------------- +Unsafe. It is not safe to call this inside any callback. + + +Remarks +------- +You only need to use this function if you want to configure the context differently to it's defaults. You should never use this function if you want to manage +your own context. + +See the documentation for `ma_context_init()` for information on the different context configuration options. + + +See Also +-------- +ma_device_init() +ma_device_uninit() +ma_device_config_init() +ma_context_init() +*/ +MA_API ma_result ma_device_init_ex(const ma_backend backends[], ma_uint32 backendCount, const ma_context_config* pContextConfig, const ma_device_config* pConfig, ma_device* pDevice); + +/* +Uninitializes a device. + +This will explicitly stop the device. You do not need to call `ma_device_stop()` beforehand, but it's harmless if you do. + + +Parameters +---------- +pDevice (in) + A pointer to the device to stop. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Unsafe. As soon as this API is called the device should be considered undefined. + + +Callback Safety +--------------- +Unsafe. It is not safe to call this inside any callback. Doing this will result in a deadlock. + + +See Also +-------- +ma_device_init() +ma_device_stop() +*/ +MA_API void ma_device_uninit(ma_device* pDevice); + +/* +Starts the device. For playback devices this begins playback. For capture devices it begins recording. + +Use `ma_device_stop()` to stop the device. + + +Parameters +---------- +pDevice (in) + A pointer to the device to start. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Safe. It's safe to call this from any thread with the exception of the callback thread. + + +Callback Safety +--------------- +Unsafe. It is not safe to call this inside any callback. + + +Remarks +------- +For a playback device, this will retrieve an initial chunk of audio data from the client before returning. The reason for this is to ensure there is valid +audio data in the buffer, which needs to be done before the device begins playback. + +This API waits until the backend device has been started for real by the worker thread. It also waits on a mutex for thread-safety. + +Do not call this in any callback. + + +See Also +-------- +ma_device_stop() +*/ +MA_API ma_result ma_device_start(ma_device* pDevice); + +/* +Stops the device. For playback devices this stops playback. For capture devices it stops recording. + +Use `ma_device_start()` to start the device again. + + +Parameters +---------- +pDevice (in) + A pointer to the device to stop. + + +Return Value +------------ +MA_SUCCESS if successful; any other error code otherwise. + + +Thread Safety +------------- +Safe. It's safe to call this from any thread with the exception of the callback thread. + + +Callback Safety +--------------- +Unsafe. It is not safe to call this inside any callback. Doing this will result in a deadlock. + + +Remarks +------- +This API needs to wait on the worker thread to stop the backend device properly before returning. It also waits on a mutex for thread-safety. In addition, some +backends need to wait for the device to finish playback/recording of the current fragment which can take some time (usually proportionate to the buffer size +that was specified at initialization time). + +Backends are required to either pause the stream in-place or drain the buffer if pausing is not possible. The reason for this is that stopping the device and +the resuming it with ma_device_start() (which you might do when your program loses focus) may result in a situation where those samples are never output to the +speakers or received from the microphone which can in turn result in de-syncs. + +Do not call this in any callback. + +This will be called implicitly by `ma_device_uninit()`. + + +See Also +-------- +ma_device_start() +*/ +MA_API ma_result ma_device_stop(ma_device* pDevice); + +/* +Determines whether or not the device is started. + + +Parameters +---------- +pDevice (in) + A pointer to the device whose start state is being retrieved. + + +Return Value +------------ +True if the device is started, false otherwise. + + +Thread Safety +------------- +Safe. If another thread calls `ma_device_start()` or `ma_device_stop()` at this same time as this function is called, there's a very small chance the return +value will be out of sync. + + +Callback Safety +--------------- +Safe. This is implemented as a simple accessor. + + +See Also +-------- +ma_device_start() +ma_device_stop() +*/ +MA_API ma_bool32 ma_device_is_started(ma_device* pDevice); + +/* +Sets the master volume factor for the device. + +The volume factor must be between 0 (silence) and 1 (full volume). Use `ma_device_set_master_gain_db()` to use decibel notation, where 0 is full volume and +values less than 0 decreases the volume. + + +Parameters +---------- +pDevice (in) + A pointer to the device whose volume is being set. + +volume (in) + The new volume factor. Must be within the range of [0, 1]. + + +Return Value +------------ +MA_SUCCESS if the volume was set successfully. +MA_INVALID_ARGS if pDevice is NULL. +MA_INVALID_ARGS if the volume factor is not within the range of [0, 1]. + + +Thread Safety +------------- +Safe. This just sets a local member of the device object. + + +Callback Safety +--------------- +Safe. If you set the volume in the data callback, that data written to the output buffer will have the new volume applied. + + +Remarks +------- +This applies the volume factor across all channels. + +This does not change the operating system's volume. It only affects the volume for the given `ma_device` object's audio stream. + + +See Also +-------- +ma_device_get_master_volume() +ma_device_set_master_volume_gain_db() +ma_device_get_master_volume_gain_db() +*/ +MA_API ma_result ma_device_set_master_volume(ma_device* pDevice, float volume); + +/* +Retrieves the master volume factor for the device. + + +Parameters +---------- +pDevice (in) + A pointer to the device whose volume factor is being retrieved. + +pVolume (in) + A pointer to the variable that will receive the volume factor. The returned value will be in the range of [0, 1]. + + +Return Value +------------ +MA_SUCCESS if successful. +MA_INVALID_ARGS if pDevice is NULL. +MA_INVALID_ARGS if pVolume is NULL. + + +Thread Safety +------------- +Safe. This just a simple member retrieval. + + +Callback Safety +--------------- +Safe. + + +Remarks +------- +If an error occurs, `*pVolume` will be set to 0. + + +See Also +-------- +ma_device_set_master_volume() +ma_device_set_master_volume_gain_db() +ma_device_get_master_volume_gain_db() +*/ +MA_API ma_result ma_device_get_master_volume(ma_device* pDevice, float* pVolume); + +/* +Sets the master volume for the device as gain in decibels. + +A gain of 0 is full volume, whereas a gain of < 0 will decrease the volume. + + +Parameters +---------- +pDevice (in) + A pointer to the device whose gain is being set. + +gainDB (in) + The new volume as gain in decibels. Must be less than or equal to 0, where 0 is full volume and anything less than 0 decreases the volume. + + +Return Value +------------ +MA_SUCCESS if the volume was set successfully. +MA_INVALID_ARGS if pDevice is NULL. +MA_INVALID_ARGS if the gain is > 0. + + +Thread Safety +------------- +Safe. This just sets a local member of the device object. + + +Callback Safety +--------------- +Safe. If you set the volume in the data callback, that data written to the output buffer will have the new volume applied. + + +Remarks +------- +This applies the gain across all channels. + +This does not change the operating system's volume. It only affects the volume for the given `ma_device` object's audio stream. + + +See Also +-------- +ma_device_get_master_volume_gain_db() +ma_device_set_master_volume() +ma_device_get_master_volume() +*/ +MA_API ma_result ma_device_set_master_gain_db(ma_device* pDevice, float gainDB); + +/* +Retrieves the master gain in decibels. + + +Parameters +---------- +pDevice (in) + A pointer to the device whose gain is being retrieved. + +pGainDB (in) + A pointer to the variable that will receive the gain in decibels. The returned value will be <= 0. + + +Return Value +------------ +MA_SUCCESS if successful. +MA_INVALID_ARGS if pDevice is NULL. +MA_INVALID_ARGS if pGainDB is NULL. + + +Thread Safety +------------- +Safe. This just a simple member retrieval. + + +Callback Safety +--------------- +Safe. + + +Remarks +------- +If an error occurs, `*pGainDB` will be set to 0. + + +See Also +-------- +ma_device_set_master_volume_gain_db() +ma_device_set_master_volume() +ma_device_get_master_volume() +*/ +MA_API ma_result ma_device_get_master_gain_db(ma_device* pDevice, float* pGainDB); + + + +/************************************************************************************************************************************************************ + +Utiltities + +************************************************************************************************************************************************************/ + +/* +Creates a mutex. + +A mutex must be created from a valid context. A mutex is initially unlocked. +*/ +MA_API ma_result ma_mutex_init(ma_context* pContext, ma_mutex* pMutex); + +/* +Deletes a mutex. +*/ +MA_API void ma_mutex_uninit(ma_mutex* pMutex); + +/* +Locks a mutex with an infinite timeout. +*/ +MA_API void ma_mutex_lock(ma_mutex* pMutex); + +/* +Unlocks a mutex. +*/ +MA_API void ma_mutex_unlock(ma_mutex* pMutex); + + +/* +Retrieves a friendly name for a backend. +*/ +MA_API const char* ma_get_backend_name(ma_backend backend); + +/* +Determines whether or not loopback mode is support by a backend. +*/ +MA_API ma_bool32 ma_is_loopback_supported(ma_backend backend); + + +/* +Adjust buffer size based on a scaling factor. + +This just multiplies the base size by the scaling factor, making sure it's a size of at least 1. +*/ +MA_API ma_uint32 ma_scale_buffer_size(ma_uint32 baseBufferSize, float scale); + +/* +Calculates a buffer size in milliseconds from the specified number of frames and sample rate. +*/ +MA_API ma_uint32 ma_calculate_buffer_size_in_milliseconds_from_frames(ma_uint32 bufferSizeInFrames, ma_uint32 sampleRate); + +/* +Calculates a buffer size in frames from the specified number of milliseconds and sample rate. +*/ +MA_API ma_uint32 ma_calculate_buffer_size_in_frames_from_milliseconds(ma_uint32 bufferSizeInMilliseconds, ma_uint32 sampleRate); + +/* +Copies silent frames into the given buffer. +*/ +MA_API void ma_zero_pcm_frames(void* p, ma_uint32 frameCount, ma_format format, ma_uint32 channels); + +/* +Clips f32 samples. +*/ +MA_API void ma_clip_samples_f32(float* p, ma_uint32 sampleCount); +static MA_INLINE void ma_clip_pcm_frames_f32(float* p, ma_uint32 frameCount, ma_uint32 channels) { ma_clip_samples_f32(p, frameCount*channels); } + +/* +Helper for applying a volume factor to samples. + +Note that the source and destination buffers can be the same, in which case it'll perform the operation in-place. +*/ +MA_API void ma_copy_and_apply_volume_factor_u8(ma_uint8* pSamplesOut, const ma_uint8* pSamplesIn, ma_uint32 sampleCount, float factor); +MA_API void ma_copy_and_apply_volume_factor_s16(ma_int16* pSamplesOut, const ma_int16* pSamplesIn, ma_uint32 sampleCount, float factor); +MA_API void ma_copy_and_apply_volume_factor_s24(void* pSamplesOut, const void* pSamplesIn, ma_uint32 sampleCount, float factor); +MA_API void ma_copy_and_apply_volume_factor_s32(ma_int32* pSamplesOut, const ma_int32* pSamplesIn, ma_uint32 sampleCount, float factor); +MA_API void ma_copy_and_apply_volume_factor_f32(float* pSamplesOut, const float* pSamplesIn, ma_uint32 sampleCount, float factor); + +MA_API void ma_apply_volume_factor_u8(ma_uint8* pSamples, ma_uint32 sampleCount, float factor); +MA_API void ma_apply_volume_factor_s16(ma_int16* pSamples, ma_uint32 sampleCount, float factor); +MA_API void ma_apply_volume_factor_s24(void* pSamples, ma_uint32 sampleCount, float factor); +MA_API void ma_apply_volume_factor_s32(ma_int32* pSamples, ma_uint32 sampleCount, float factor); +MA_API void ma_apply_volume_factor_f32(float* pSamples, ma_uint32 sampleCount, float factor); + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_u8(ma_uint8* pPCMFramesOut, const ma_uint8* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s16(ma_int16* pPCMFramesOut, const ma_int16* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s24(void* pPCMFramesOut, const void* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s32(ma_int32* pPCMFramesOut, const ma_int32* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_f32(float* pPCMFramesOut, const float* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_copy_and_apply_volume_factor_pcm_frames(void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount, ma_format format, ma_uint32 channels, float factor); + +MA_API void ma_apply_volume_factor_pcm_frames_u8(ma_uint8* pFrames, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_apply_volume_factor_pcm_frames_s16(ma_int16* pFrames, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_apply_volume_factor_pcm_frames_s24(void* pFrames, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_apply_volume_factor_pcm_frames_s32(ma_int32* pFrames, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_apply_volume_factor_pcm_frames_f32(float* pFrames, ma_uint32 frameCount, ma_uint32 channels, float factor); +MA_API void ma_apply_volume_factor_pcm_frames(void* pFrames, ma_uint32 frameCount, ma_format format, ma_uint32 channels, float factor); + + +/* +Helper for converting a linear factor to gain in decibels. +*/ +MA_API float ma_factor_to_gain_db(float factor); + +/* +Helper for converting gain in decibels to a linear factor. +*/ +MA_API float ma_gain_db_to_factor(float gain); + +#endif /* MA_NO_DEVICE_IO */ + + +#if !defined(MA_NO_DECODING) || !defined(MA_NO_ENCODING) +typedef enum +{ + ma_seek_origin_start, + ma_seek_origin_current +} ma_seek_origin; + +typedef enum +{ + ma_resource_format_wav +} ma_resource_format; +#endif + +/************************************************************************************************************************************************************ + +Decoding +======== + +Decoders are independent of the main device API. Decoding APIs can be called freely inside the device's data callback, but they are not thread safe unless +you do your own synchronization. + +************************************************************************************************************************************************************/ +#ifndef MA_NO_DECODING +typedef struct ma_decoder ma_decoder; + +typedef size_t (* ma_decoder_read_proc) (ma_decoder* pDecoder, void* pBufferOut, size_t bytesToRead); /* Returns the number of bytes read. */ +typedef ma_bool32 (* ma_decoder_seek_proc) (ma_decoder* pDecoder, int byteOffset, ma_seek_origin origin); +typedef ma_uint64 (* ma_decoder_read_pcm_frames_proc) (ma_decoder* pDecoder, void* pFramesOut, ma_uint64 frameCount); /* Returns the number of frames read. Output data is in internal format. */ +typedef ma_result (* ma_decoder_seek_to_pcm_frame_proc) (ma_decoder* pDecoder, ma_uint64 frameIndex); +typedef ma_result (* ma_decoder_uninit_proc) (ma_decoder* pDecoder); +typedef ma_uint64 (* ma_decoder_get_length_in_pcm_frames_proc)(ma_decoder* pDecoder); + +typedef struct +{ + ma_format format; /* Set to 0 or ma_format_unknown to use the stream's internal format. */ + ma_uint32 channels; /* Set to 0 to use the stream's internal channels. */ + ma_uint32 sampleRate; /* Set to 0 to use the stream's internal sample rate. */ + ma_channel channelMap[MA_MAX_CHANNELS]; + ma_channel_mix_mode channelMixMode; + ma_dither_mode ditherMode; + struct + { + ma_resample_algorithm algorithm; + struct + { + ma_uint32 lpfOrder; + } linear; + struct + { + int quality; + } speex; + } resampling; + ma_allocation_callbacks allocationCallbacks; +} ma_decoder_config; + +struct ma_decoder +{ + ma_decoder_read_proc onRead; + ma_decoder_seek_proc onSeek; + void* pUserData; + ma_uint64 readPointer; /* Used for returning back to a previous position after analysing the stream or whatnot. */ + ma_format internalFormat; + ma_uint32 internalChannels; + ma_uint32 internalSampleRate; + ma_channel internalChannelMap[MA_MAX_CHANNELS]; + ma_format outputFormat; + ma_uint32 outputChannels; + ma_uint32 outputSampleRate; + ma_channel outputChannelMap[MA_MAX_CHANNELS]; + ma_data_converter converter; /* <-- Data conversion is achieved by running frames through this. */ + ma_allocation_callbacks allocationCallbacks; + ma_decoder_read_pcm_frames_proc onReadPCMFrames; + ma_decoder_seek_to_pcm_frame_proc onSeekToPCMFrame; + ma_decoder_uninit_proc onUninit; + ma_decoder_get_length_in_pcm_frames_proc onGetLengthInPCMFrames; + void* pInternalDecoder; /* <-- The drwav/drflac/stb_vorbis/etc. objects. */ + struct + { + const ma_uint8* pData; + size_t dataSize; + size_t currentReadPos; + } memory; /* Only used for decoders that were opened against a block of memory. */ +}; + +MA_API ma_decoder_config ma_decoder_config_init(ma_format outputFormat, ma_uint32 outputChannels, ma_uint32 outputSampleRate); + +MA_API ma_result ma_decoder_init(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_wav(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_flac(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_vorbis(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_mp3(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_raw(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfigIn, const ma_decoder_config* pConfigOut, ma_decoder* pDecoder); + +MA_API ma_result ma_decoder_init_memory(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_memory_wav(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_memory_flac(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_memory_vorbis(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_memory_mp3(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_memory_raw(const void* pData, size_t dataSize, const ma_decoder_config* pConfigIn, const ma_decoder_config* pConfigOut, ma_decoder* pDecoder); + +MA_API ma_result ma_decoder_init_file(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_wav(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_flac(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_vorbis(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_mp3(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); + +MA_API ma_result ma_decoder_init_file_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_wav_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_flac_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_vorbis_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); +MA_API ma_result ma_decoder_init_file_mp3_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder); + +MA_API ma_result ma_decoder_uninit(ma_decoder* pDecoder); + +/* +Retrieves the length of the decoder in PCM frames. + +Do not call this on streams of an undefined length, such as internet radio. + +If the length is unknown or an error occurs, 0 will be returned. + +This will always return 0 for Vorbis decoders. This is due to a limitation with stb_vorbis in push mode which is what miniaudio +uses internally. + +For MP3's, this will decode the entire file. Do not call this in time critical scenarios. + +This function is not thread safe without your own synchronization. +*/ +MA_API ma_uint64 ma_decoder_get_length_in_pcm_frames(ma_decoder* pDecoder); + +/* +Reads PCM frames from the given decoder. + +This is not thread safe without your own synchronization. +*/ +MA_API ma_uint64 ma_decoder_read_pcm_frames(ma_decoder* pDecoder, void* pFramesOut, ma_uint64 frameCount); + +/* +Seeks to a PCM frame based on it's absolute index. + +This is not thread safe without your own synchronization. +*/ +MA_API ma_result ma_decoder_seek_to_pcm_frame(ma_decoder* pDecoder, ma_uint64 frameIndex); + +/* +Helper for opening and decoding a file into a heap allocated block of memory. Free the returned pointer with ma_free(). On input, +pConfig should be set to what you want. On output it will be set to what you got. +*/ +MA_API ma_result ma_decode_file(const char* pFilePath, ma_decoder_config* pConfig, ma_uint64* pFrameCountOut, void** ppDataOut); +MA_API ma_result ma_decode_memory(const void* pData, size_t dataSize, ma_decoder_config* pConfig, ma_uint64* pFrameCountOut, void** ppDataOut); + +#endif /* MA_NO_DECODING */ + + +/************************************************************************************************************************************************************ + +Encoding +======== + +Encoders do not perform any format conversion for you. If your target format does not support the format, and error will be returned. + +************************************************************************************************************************************************************/ +#ifndef MA_NO_ENCODING +typedef struct ma_encoder ma_encoder; + +typedef size_t (* ma_encoder_write_proc) (ma_encoder* pEncoder, const void* pBufferIn, size_t bytesToWrite); /* Returns the number of bytes written. */ +typedef ma_bool32 (* ma_encoder_seek_proc) (ma_encoder* pEncoder, int byteOffset, ma_seek_origin origin); +typedef ma_result (* ma_encoder_init_proc) (ma_encoder* pEncoder); +typedef void (* ma_encoder_uninit_proc) (ma_encoder* pEncoder); +typedef ma_uint64 (* ma_encoder_write_pcm_frames_proc)(ma_encoder* pEncoder, const void* pFramesIn, ma_uint64 frameCount); + +typedef struct +{ + ma_resource_format resourceFormat; + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + ma_allocation_callbacks allocationCallbacks; +} ma_encoder_config; + +MA_API ma_encoder_config ma_encoder_config_init(ma_resource_format resourceFormat, ma_format format, ma_uint32 channels, ma_uint32 sampleRate); + +struct ma_encoder +{ + ma_encoder_config config; + ma_encoder_write_proc onWrite; + ma_encoder_seek_proc onSeek; + ma_encoder_init_proc onInit; + ma_encoder_uninit_proc onUninit; + ma_encoder_write_pcm_frames_proc onWritePCMFrames; + void* pUserData; + void* pInternalEncoder; /* <-- The drwav/drflac/stb_vorbis/etc. objects. */ + void* pFile; /* FILE*. Only used when initialized with ma_encoder_init_file(). */ +}; + +MA_API ma_result ma_encoder_init(ma_encoder_write_proc onWrite, ma_encoder_seek_proc onSeek, void* pUserData, const ma_encoder_config* pConfig, ma_encoder* pEncoder); +MA_API ma_result ma_encoder_init_file(const char* pFilePath, const ma_encoder_config* pConfig, ma_encoder* pEncoder); +MA_API ma_result ma_encoder_init_file_w(const wchar_t* pFilePath, const ma_encoder_config* pConfig, ma_encoder* pEncoder); +MA_API void ma_encoder_uninit(ma_encoder* pEncoder); +MA_API ma_uint64 ma_encoder_write_pcm_frames(ma_encoder* pEncoder, const void* pFramesIn, ma_uint64 frameCount); + +#endif /* MA_NO_ENCODING */ + + +/************************************************************************************************************************************************************ + +Generation + +************************************************************************************************************************************************************/ +typedef enum +{ + ma_waveform_type_sine, + ma_waveform_type_square, + ma_waveform_type_triangle, + ma_waveform_type_sawtooth +} ma_waveform_type; + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + ma_waveform_type type; + double amplitude; + double frequency; +} ma_waveform_config; + +MA_API ma_waveform_config ma_waveform_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, ma_waveform_type type, double amplitude, double frequency); + +typedef struct +{ + ma_waveform_config config; + double advance; + double time; +} ma_waveform; + +MA_API ma_result ma_waveform_init(const ma_waveform_config* pConfig, ma_waveform* pWaveform); +MA_API ma_uint64 ma_waveform_read_pcm_frames(ma_waveform* pWaveform, void* pFramesOut, ma_uint64 frameCount); +MA_API ma_result ma_waveform_set_amplitude(ma_waveform* pWaveform, double amplitude); +MA_API ma_result ma_waveform_set_frequency(ma_waveform* pWaveform, double frequency); +MA_API ma_result ma_waveform_set_sample_rate(ma_waveform* pWaveform, ma_uint32 sampleRate); + + + +typedef struct +{ + ma_int32 state; +} ma_lcg; + +typedef enum +{ + ma_noise_type_white, + ma_noise_type_pink, + ma_noise_type_brownian +} ma_noise_type; + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_noise_type type; + ma_int32 seed; + double amplitude; + ma_bool32 duplicateChannels; +} ma_noise_config; + +MA_API ma_noise_config ma_noise_config_init(ma_format format, ma_uint32 channels, ma_noise_type type, ma_int32 seed, double amplitude); + +typedef struct +{ + ma_noise_config config; + ma_lcg lcg; + union + { + struct + { + double bin[MA_MAX_CHANNELS][16]; + double accumulation[MA_MAX_CHANNELS]; + ma_uint32 counter[MA_MAX_CHANNELS]; + } pink; + struct + { + double accumulation[MA_MAX_CHANNELS]; + } brownian; + } state; +} ma_noise; + +MA_API ma_result ma_noise_init(const ma_noise_config* pConfig, ma_noise* pNoise); +MA_API ma_uint64 ma_noise_read_pcm_frames(ma_noise* pNoise, void* pFramesOut, ma_uint64 frameCount); + + +#ifdef __cplusplus +} +#endif +#endif /* miniaudio_h */ + + + +/************************************************************************************************************************************************************ +************************************************************************************************************************************************************* + +IMPLEMENTATION + +************************************************************************************************************************************************************* +************************************************************************************************************************************************************/ +#if defined(MINIAUDIO_IMPLEMENTATION) || defined(MA_IMPLEMENTATION) +#include <assert.h> +#include <limits.h> /* For INT_MAX */ +#include <math.h> /* sin(), etc. */ + +#include <stdarg.h> +#include <stdio.h> +#if !defined(_MSC_VER) && !defined(__DMC__) + #include <strings.h> /* For strcasecmp(). */ + #include <wchar.h> /* For wcslen(), wcsrtombs() */ +#endif + +#ifdef MA_WIN32 +#include <windows.h> +#else +#include <stdlib.h> /* For malloc(), free(), wcstombs(). */ +#include <string.h> /* For memset() */ +#endif + +#ifdef MA_EMSCRIPTEN +#include <emscripten/emscripten.h> +#endif + +#if !defined(MA_64BIT) && !defined(MA_32BIT) +#ifdef _WIN32 +#ifdef _WIN64 +#define MA_64BIT +#else +#define MA_32BIT +#endif +#endif +#endif + +#if !defined(MA_64BIT) && !defined(MA_32BIT) +#ifdef __GNUC__ +#ifdef __LP64__ +#define MA_64BIT +#else +#define MA_32BIT +#endif +#endif +#endif + +#if !defined(MA_64BIT) && !defined(MA_32BIT) +#include <stdint.h> +#if INTPTR_MAX == INT64_MAX +#define MA_64BIT +#else +#define MA_32BIT +#endif +#endif + +/* Architecture Detection */ +#if defined(__x86_64__) || defined(_M_X64) +#define MA_X64 +#elif defined(__i386) || defined(_M_IX86) +#define MA_X86 +#elif defined(__arm__) || defined(_M_ARM) +#define MA_ARM +#endif + +/* Cannot currently support AVX-512 if AVX is disabled. */ +#if !defined(MA_NO_AVX512) && defined(MA_NO_AVX2) +#define MA_NO_AVX512 +#endif + +/* Intrinsics Support */ +#if defined(MA_X64) || defined(MA_X86) + #if defined(_MSC_VER) && !defined(__clang__) + /* MSVC. */ + #if _MSC_VER >= 1400 && !defined(MA_NO_SSE2) /* 2005 */ + #define MA_SUPPORT_SSE2 + #endif + /*#if _MSC_VER >= 1600 && !defined(MA_NO_AVX)*/ /* 2010 */ + /* #define MA_SUPPORT_AVX*/ + /*#endif*/ + #if _MSC_VER >= 1700 && !defined(MA_NO_AVX2) /* 2012 */ + #define MA_SUPPORT_AVX2 + #endif + #if _MSC_VER >= 1910 && !defined(MA_NO_AVX512) /* 2017 */ + #define MA_SUPPORT_AVX512 + #endif + #else + /* Assume GNUC-style. */ + #if defined(__SSE2__) && !defined(MA_NO_SSE2) + #define MA_SUPPORT_SSE2 + #endif + /*#if defined(__AVX__) && !defined(MA_NO_AVX)*/ + /* #define MA_SUPPORT_AVX*/ + /*#endif*/ + #if defined(__AVX2__) && !defined(MA_NO_AVX2) + #define MA_SUPPORT_AVX2 + #endif + #if defined(__AVX512F__) && !defined(MA_NO_AVX512) + #define MA_SUPPORT_AVX512 + #endif + #endif + + /* If at this point we still haven't determined compiler support for the intrinsics just fall back to __has_include. */ + #if !defined(__GNUC__) && !defined(__clang__) && defined(__has_include) + #if !defined(MA_SUPPORT_SSE2) && !defined(MA_NO_SSE2) && __has_include(<emmintrin.h>) + #define MA_SUPPORT_SSE2 + #endif + /*#if !defined(MA_SUPPORT_AVX) && !defined(MA_NO_AVX) && __has_include(<immintrin.h>)*/ + /* #define MA_SUPPORT_AVX*/ + /*#endif*/ + #if !defined(MA_SUPPORT_AVX2) && !defined(MA_NO_AVX2) && __has_include(<immintrin.h>) + #define MA_SUPPORT_AVX2 + #endif + #if !defined(MA_SUPPORT_AVX512) && !defined(MA_NO_AVX512) && __has_include(<zmmintrin.h>) + #define MA_SUPPORT_AVX512 + #endif + #endif + + #if defined(MA_SUPPORT_AVX512) + #include <immintrin.h> /* Not a mistake. Intentionally including <immintrin.h> instead of <zmmintrin.h> because otherwise the compiler will complain. */ + #elif defined(MA_SUPPORT_AVX2) || defined(MA_SUPPORT_AVX) + #include <immintrin.h> + #elif defined(MA_SUPPORT_SSE2) + #include <emmintrin.h> + #endif +#endif + +#if defined(MA_ARM) + #if !defined(MA_NO_NEON) && (defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64)) + #define MA_SUPPORT_NEON + #endif + + /* Fall back to looking for the #include file. */ + #if !defined(__GNUC__) && !defined(__clang__) && defined(__has_include) + #if !defined(MA_SUPPORT_NEON) && !defined(MA_NO_NEON) && __has_include(<arm_neon.h>) + #define MA_SUPPORT_NEON + #endif + #endif + + #if defined(MA_SUPPORT_NEON) + #include <arm_neon.h> + #endif +#endif + +/* Begin globally disabled warnings. */ +#if defined(_MSC_VER) + #pragma warning(push) + #pragma warning(disable:4752) /* found Intel(R) Advanced Vector Extensions; consider using /arch:AVX */ +#endif + +#if defined(MA_X64) || defined(MA_X86) + #if defined(_MSC_VER) && !defined(__clang__) + #if _MSC_VER >= 1400 + #include <intrin.h> + static MA_INLINE void ma_cpuid(int info[4], int fid) + { + __cpuid(info, fid); + } + #else + #define MA_NO_CPUID + #endif + + #if _MSC_VER >= 1600 && (defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 160040219) + static MA_INLINE unsigned __int64 ma_xgetbv(int reg) + { + return _xgetbv(reg); + } + #else + #define MA_NO_XGETBV + #endif + #elif (defined(__GNUC__) || defined(__clang__)) && !defined(MA_ANDROID) + static MA_INLINE void ma_cpuid(int info[4], int fid) + { + /* + It looks like the -fPIC option uses the ebx register which GCC complains about. We can work around this by just using a different register, the + specific register of which I'm letting the compiler decide on. The "k" prefix is used to specify a 32-bit register. The {...} syntax is for + supporting different assembly dialects. + + What's basically happening is that we're saving and restoring the ebx register manually. + */ + #if defined(DRFLAC_X86) && defined(__PIC__) + __asm__ __volatile__ ( + "xchg{l} {%%}ebx, %k1;" + "cpuid;" + "xchg{l} {%%}ebx, %k1;" + : "=a"(info[0]), "=&r"(info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(fid), "c"(0) + ); + #else + __asm__ __volatile__ ( + "cpuid" : "=a"(info[0]), "=b"(info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(fid), "c"(0) + ); + #endif + } + + static MA_INLINE ma_uint64 ma_xgetbv(int reg) + { + unsigned int hi; + unsigned int lo; + + __asm__ __volatile__ ( + "xgetbv" : "=a"(lo), "=d"(hi) : "c"(reg) + ); + + return ((ma_uint64)hi << 32) | (ma_uint64)lo; + } + #else + #define MA_NO_CPUID + #define MA_NO_XGETBV + #endif +#else + #define MA_NO_CPUID + #define MA_NO_XGETBV +#endif + +static MA_INLINE ma_bool32 ma_has_sse2() +{ +#if defined(MA_SUPPORT_SSE2) + #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_SSE2) + #if defined(MA_X64) + return MA_TRUE; /* 64-bit targets always support SSE2. */ + #elif (defined(_M_IX86_FP) && _M_IX86_FP == 2) || defined(__SSE2__) + return MA_TRUE; /* If the compiler is allowed to freely generate SSE2 code we can assume support. */ + #else + #if defined(MA_NO_CPUID) + return MA_FALSE; + #else + int info[4]; + ma_cpuid(info, 1); + return (info[3] & (1 << 26)) != 0; + #endif + #endif + #else + return MA_FALSE; /* SSE2 is only supported on x86 and x64 architectures. */ + #endif +#else + return MA_FALSE; /* No compiler support. */ +#endif +} + +#if 0 +static MA_INLINE ma_bool32 ma_has_avx() +{ +#if defined(MA_SUPPORT_AVX) + #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_AVX) + #if defined(_AVX_) || defined(__AVX__) + return MA_TRUE; /* If the compiler is allowed to freely generate AVX code we can assume support. */ + #else + /* AVX requires both CPU and OS support. */ + #if defined(MA_NO_CPUID) || defined(MA_NO_XGETBV) + return MA_FALSE; + #else + int info[4]; + ma_cpuid(info, 1); + if (((info[2] & (1 << 27)) != 0) && ((info[2] & (1 << 28)) != 0)) { + ma_uint64 xrc = ma_xgetbv(0); + if ((xrc & 0x06) == 0x06) { + return MA_TRUE; + } else { + return MA_FALSE; + } + } else { + return MA_FALSE; + } + #endif + #endif + #else + return MA_FALSE; /* AVX is only supported on x86 and x64 architectures. */ + #endif +#else + return MA_FALSE; /* No compiler support. */ +#endif +} +#endif + +static MA_INLINE ma_bool32 ma_has_avx2() +{ +#if defined(MA_SUPPORT_AVX2) + #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_AVX2) + #if defined(_AVX2_) || defined(__AVX2__) + return MA_TRUE; /* If the compiler is allowed to freely generate AVX2 code we can assume support. */ + #else + /* AVX2 requires both CPU and OS support. */ + #if defined(MA_NO_CPUID) || defined(MA_NO_XGETBV) + return MA_FALSE; + #else + int info1[4]; + int info7[4]; + ma_cpuid(info1, 1); + ma_cpuid(info7, 7); + if (((info1[2] & (1 << 27)) != 0) && ((info7[1] & (1 << 5)) != 0)) { + ma_uint64 xrc = ma_xgetbv(0); + if ((xrc & 0x06) == 0x06) { + return MA_TRUE; + } else { + return MA_FALSE; + } + } else { + return MA_FALSE; + } + #endif + #endif + #else + return MA_FALSE; /* AVX2 is only supported on x86 and x64 architectures. */ + #endif +#else + return MA_FALSE; /* No compiler support. */ +#endif +} + +static MA_INLINE ma_bool32 ma_has_avx512f() +{ +#if defined(MA_SUPPORT_AVX512) + #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_AVX512) + #if defined(__AVX512F__) + return MA_TRUE; /* If the compiler is allowed to freely generate AVX-512F code we can assume support. */ + #else + /* AVX-512 requires both CPU and OS support. */ + #if defined(MA_NO_CPUID) || defined(MA_NO_XGETBV) + return MA_FALSE; + #else + int info1[4]; + int info7[4]; + ma_cpuid(info1, 1); + ma_cpuid(info7, 7); + if (((info1[2] & (1 << 27)) != 0) && ((info7[1] & (1 << 16)) != 0)) { + ma_uint64 xrc = ma_xgetbv(0); + if ((xrc & 0xE6) == 0xE6) { + return MA_TRUE; + } else { + return MA_FALSE; + } + } else { + return MA_FALSE; + } + #endif + #endif + #else + return MA_FALSE; /* AVX-512F is only supported on x86 and x64 architectures. */ + #endif +#else + return MA_FALSE; /* No compiler support. */ +#endif +} + +static MA_INLINE ma_bool32 ma_has_neon() +{ +#if defined(MA_SUPPORT_NEON) + #if defined(MA_ARM) && !defined(MA_NO_NEON) + #if (defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64)) + return MA_TRUE; /* If the compiler is allowed to freely generate NEON code we can assume support. */ + #else + /* TODO: Runtime check. */ + return MA_FALSE; + #endif + #else + return MA_FALSE; /* NEON is only supported on ARM architectures. */ + #endif +#else + return MA_FALSE; /* No compiler support. */ +#endif +} + +#define MA_SIMD_NONE 0 +#define MA_SIMD_SSE2 1 +#define MA_SIMD_AVX2 2 +#define MA_SIMD_NEON 3 + +#ifndef MA_PREFERRED_SIMD + # if defined(MA_SUPPORT_SSE2) && defined(MA_PREFER_SSE2) + #define MA_PREFERRED_SIMD MA_SIMD_SSE2 + #elif defined(MA_SUPPORT_AVX2) && defined(MA_PREFER_AVX2) + #define MA_PREFERRED_SIMD MA_SIMD_AVX2 + #elif defined(MA_SUPPORT_NEON) && defined(MA_PREFER_NEON) + #define MA_PREFERRED_SIMD MA_SIMD_NEON + #else + #define MA_PREFERRED_SIMD MA_SIMD_NONE + #endif +#endif + + +static MA_INLINE ma_bool32 ma_is_little_endian() +{ +#if defined(MA_X86) || defined(MA_X64) + return MA_TRUE; +#else + int n = 1; + return (*(char*)&n) == 1; +#endif +} + +static MA_INLINE ma_bool32 ma_is_big_endian() +{ + return !ma_is_little_endian(); +} + + +#ifndef MA_COINIT_VALUE +#define MA_COINIT_VALUE 0 /* 0 = COINIT_MULTITHREADED */ +#endif + + + +#ifndef MA_PI +#define MA_PI 3.14159265358979323846264f +#endif +#ifndef MA_PI_D +#define MA_PI_D 3.14159265358979323846264 +#endif +#ifndef MA_TAU +#define MA_TAU 6.28318530717958647693f +#endif +#ifndef MA_TAU_D +#define MA_TAU_D 6.28318530717958647693 +#endif + + +/* The default format when ma_format_unknown (0) is requested when initializing a device. */ +#ifndef MA_DEFAULT_FORMAT +#define MA_DEFAULT_FORMAT ma_format_f32 +#endif + +/* The default channel count to use when 0 is used when initializing a device. */ +#ifndef MA_DEFAULT_CHANNELS +#define MA_DEFAULT_CHANNELS 2 +#endif + +/* The default sample rate to use when 0 is used when initializing a device. */ +#ifndef MA_DEFAULT_SAMPLE_RATE +#define MA_DEFAULT_SAMPLE_RATE 48000 +#endif + +/* Default periods when none is specified in ma_device_init(). More periods means more work on the CPU. */ +#ifndef MA_DEFAULT_PERIODS +#define MA_DEFAULT_PERIODS 3 +#endif + +/* The default period size in milliseconds for low latency mode. */ +#ifndef MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY +#define MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY 10 +#endif + +/* The default buffer size in milliseconds for conservative mode. */ +#ifndef MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE +#define MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE 100 +#endif + +/* The default LPF filter order for linear resampling. Note that this is clamped to MA_MAX_FILTER_ORDER. */ +#ifndef MA_DEFAULT_RESAMPLER_LPF_ORDER + #if MA_MAX_FILTER_ORDER >= 4 + #define MA_DEFAULT_RESAMPLER_LPF_ORDER 4 + #else + #define MA_DEFAULT_RESAMPLER_LPF_ORDER MA_MAX_FILTER_ORDER + #endif +#endif + + +#if defined(__GNUC__) + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wunused-variable" +#endif +/* Standard sample rates, in order of priority. */ +static ma_uint32 g_maStandardSampleRatePriorities[] = { + MA_SAMPLE_RATE_48000, /* Most common */ + MA_SAMPLE_RATE_44100, + + MA_SAMPLE_RATE_32000, /* Lows */ + MA_SAMPLE_RATE_24000, + MA_SAMPLE_RATE_22050, + + MA_SAMPLE_RATE_88200, /* Highs */ + MA_SAMPLE_RATE_96000, + MA_SAMPLE_RATE_176400, + MA_SAMPLE_RATE_192000, + + MA_SAMPLE_RATE_16000, /* Extreme lows */ + MA_SAMPLE_RATE_11025, + MA_SAMPLE_RATE_8000, + + MA_SAMPLE_RATE_352800, /* Extreme highs */ + MA_SAMPLE_RATE_384000 +}; + +static ma_format g_maFormatPriorities[] = { + ma_format_s16, /* Most common */ + ma_format_f32, + + /*ma_format_s24_32,*/ /* Clean alignment */ + ma_format_s32, + + ma_format_s24, /* Unclean alignment */ + + ma_format_u8 /* Low quality */ +}; +#if defined(__GNUC__) + #pragma GCC diagnostic pop +#endif + + +/****************************************************************************** + +Standard Library Stuff + +******************************************************************************/ +#ifndef MA_MALLOC +#ifdef MA_WIN32 +#define MA_MALLOC(sz) HeapAlloc(GetProcessHeap(), 0, (sz)) +#else +#define MA_MALLOC(sz) malloc((sz)) +#endif +#endif + +#ifndef MA_REALLOC +#ifdef MA_WIN32 +#define MA_REALLOC(p, sz) (((sz) > 0) ? ((p) ? HeapReAlloc(GetProcessHeap(), 0, (p), (sz)) : HeapAlloc(GetProcessHeap(), 0, (sz))) : ((VOID*)(size_t)(HeapFree(GetProcessHeap(), 0, (p)) & 0))) +#else +#define MA_REALLOC(p, sz) realloc((p), (sz)) +#endif +#endif + +#ifndef MA_FREE +#ifdef MA_WIN32 +#define MA_FREE(p) HeapFree(GetProcessHeap(), 0, (p)) +#else +#define MA_FREE(p) free((p)) +#endif +#endif + +#ifndef MA_ZERO_MEMORY +#ifdef MA_WIN32 +#define MA_ZERO_MEMORY(p, sz) ZeroMemory((p), (sz)) +#else +#define MA_ZERO_MEMORY(p, sz) memset((p), 0, (sz)) +#endif +#endif + +#ifndef MA_COPY_MEMORY +#ifdef MA_WIN32 +#define MA_COPY_MEMORY(dst, src, sz) CopyMemory((dst), (src), (sz)) +#else +#define MA_COPY_MEMORY(dst, src, sz) memcpy((dst), (src), (sz)) +#endif +#endif + +#ifndef MA_ASSERT +#ifdef MA_WIN32 +#define MA_ASSERT(condition) assert(condition) +#else +#define MA_ASSERT(condition) assert(condition) +#endif +#endif + +#define MA_ZERO_OBJECT(p) MA_ZERO_MEMORY((p), sizeof(*(p))) + +#define ma_countof(x) (sizeof(x) / sizeof(x[0])) +#define ma_max(x, y) (((x) > (y)) ? (x) : (y)) +#define ma_min(x, y) (((x) < (y)) ? (x) : (y)) +#define ma_abs(x) (((x) > 0) ? (x) : -(x)) +#define ma_clamp(x, lo, hi) (ma_max(lo, ma_min(x, hi))) +#define ma_offset_ptr(p, offset) (((ma_uint8*)(p)) + (offset)) + +#define ma_buffer_frame_capacity(buffer, channels, format) (sizeof(buffer) / ma_get_bytes_per_sample(format) / (channels)) + +static MA_INLINE double ma_sin(double x) +{ + /* TODO: Implement custom sin(x). */ + return sin(x); +} + +static MA_INLINE double ma_exp(double x) +{ + /* TODO: Implement custom exp(x). */ + return exp(x); +} + +static MA_INLINE double ma_log(double x) +{ + /* TODO: Implement custom log(x). */ + return log(x); +} + +static MA_INLINE double ma_pow(double x, double y) +{ + /* TODO: Implement custom pow(x, y). */ + return pow(x, y); +} + +static MA_INLINE double ma_sqrt(double x) +{ + /* TODO: Implement custom sqrt(x). */ + return sqrt(x); +} + + +static MA_INLINE double ma_cos(double x) +{ + return ma_sin((MA_PI_D*0.5) - x); +} + +static MA_INLINE double ma_log10(double x) +{ + return ma_log(x) * 0.43429448190325182765; +} + +static MA_INLINE float ma_powf(float x, float y) +{ + return (float)ma_pow((double)x, (double)y); +} + +static MA_INLINE float ma_log10f(float x) +{ + return (float)ma_log10((double)x); +} + + +/* +Return Values: + 0: Success + 22: EINVAL + 34: ERANGE + +Not using symbolic constants for errors because I want to avoid #including errno.h +*/ +MA_API int ma_strcpy_s(char* dst, size_t dstSizeInBytes, const char* src) +{ + size_t i; + + if (dst == 0) { + return 22; + } + if (dstSizeInBytes == 0) { + return 34; + } + if (src == 0) { + dst[0] = '\0'; + return 22; + } + + for (i = 0; i < dstSizeInBytes && src[i] != '\0'; ++i) { + dst[i] = src[i]; + } + + if (i < dstSizeInBytes) { + dst[i] = '\0'; + return 0; + } + + dst[0] = '\0'; + return 34; +} + +MA_API int ma_strncpy_s(char* dst, size_t dstSizeInBytes, const char* src, size_t count) +{ + size_t maxcount; + size_t i; + + if (dst == 0) { + return 22; + } + if (dstSizeInBytes == 0) { + return 34; + } + if (src == 0) { + dst[0] = '\0'; + return 22; + } + + maxcount = count; + if (count == ((size_t)-1) || count >= dstSizeInBytes) { /* -1 = _TRUNCATE */ + maxcount = dstSizeInBytes - 1; + } + + for (i = 0; i < maxcount && src[i] != '\0'; ++i) { + dst[i] = src[i]; + } + + if (src[i] == '\0' || i == count || count == ((size_t)-1)) { + dst[i] = '\0'; + return 0; + } + + dst[0] = '\0'; + return 34; +} + +MA_API int ma_strcat_s(char* dst, size_t dstSizeInBytes, const char* src) +{ + char* dstorig; + + if (dst == 0) { + return 22; + } + if (dstSizeInBytes == 0) { + return 34; + } + if (src == 0) { + dst[0] = '\0'; + return 22; + } + + dstorig = dst; + + while (dstSizeInBytes > 0 && dst[0] != '\0') { + dst += 1; + dstSizeInBytes -= 1; + } + + if (dstSizeInBytes == 0) { + return 22; /* Unterminated. */ + } + + + while (dstSizeInBytes > 0 && src[0] != '\0') { + *dst++ = *src++; + dstSizeInBytes -= 1; + } + + if (dstSizeInBytes > 0) { + dst[0] = '\0'; + } else { + dstorig[0] = '\0'; + return 34; + } + + return 0; +} + +MA_API int ma_strncat_s(char* dst, size_t dstSizeInBytes, const char* src, size_t count) +{ + char* dstorig; + + if (dst == 0) { + return 22; + } + if (dstSizeInBytes == 0) { + return 34; + } + if (src == 0) { + return 22; + } + + dstorig = dst; + + while (dstSizeInBytes > 0 && dst[0] != '\0') { + dst += 1; + dstSizeInBytes -= 1; + } + + if (dstSizeInBytes == 0) { + return 22; /* Unterminated. */ + } + + + if (count == ((size_t)-1)) { /* _TRUNCATE */ + count = dstSizeInBytes - 1; + } + + while (dstSizeInBytes > 0 && src[0] != '\0' && count > 0) { + *dst++ = *src++; + dstSizeInBytes -= 1; + count -= 1; + } + + if (dstSizeInBytes > 0) { + dst[0] = '\0'; + } else { + dstorig[0] = '\0'; + return 34; + } + + return 0; +} + +MA_API int ma_itoa_s(int value, char* dst, size_t dstSizeInBytes, int radix) +{ + int sign; + unsigned int valueU; + char* dstEnd; + + if (dst == NULL || dstSizeInBytes == 0) { + return 22; + } + if (radix < 2 || radix > 36) { + dst[0] = '\0'; + return 22; + } + + sign = (value < 0 && radix == 10) ? -1 : 1; /* The negative sign is only used when the base is 10. */ + + if (value < 0) { + valueU = -value; + } else { + valueU = value; + } + + dstEnd = dst; + do + { + int remainder = valueU % radix; + if (remainder > 9) { + *dstEnd = (char)((remainder - 10) + 'a'); + } else { + *dstEnd = (char)(remainder + '0'); + } + + dstEnd += 1; + dstSizeInBytes -= 1; + valueU /= radix; + } while (dstSizeInBytes > 0 && valueU > 0); + + if (dstSizeInBytes == 0) { + dst[0] = '\0'; + return 22; /* Ran out of room in the output buffer. */ + } + + if (sign < 0) { + *dstEnd++ = '-'; + dstSizeInBytes -= 1; + } + + if (dstSizeInBytes == 0) { + dst[0] = '\0'; + return 22; /* Ran out of room in the output buffer. */ + } + + *dstEnd = '\0'; + + + /* At this point the string will be reversed. */ + dstEnd -= 1; + while (dst < dstEnd) { + char temp = *dst; + *dst = *dstEnd; + *dstEnd = temp; + + dst += 1; + dstEnd -= 1; + } + + return 0; +} + +MA_API int ma_strcmp(const char* str1, const char* str2) +{ + if (str1 == str2) return 0; + + /* These checks differ from the standard implementation. It's not important, but I prefer it just for sanity. */ + if (str1 == NULL) return -1; + if (str2 == NULL) return 1; + + for (;;) { + if (str1[0] == '\0') { + break; + } + if (str1[0] != str2[0]) { + break; + } + + str1 += 1; + str2 += 1; + } + + return ((unsigned char*)str1)[0] - ((unsigned char*)str2)[0]; +} + +MA_API int ma_strappend(char* dst, size_t dstSize, const char* srcA, const char* srcB) +{ + int result; + + result = ma_strncpy_s(dst, dstSize, srcA, (size_t)-1); + if (result != 0) { + return result; + } + + result = ma_strncat_s(dst, dstSize, srcB, (size_t)-1); + if (result != 0) { + return result; + } + + return result; +} + +MA_API char* ma_copy_string(const char* src, const ma_allocation_callbacks* pAllocationCallbacks) +{ + size_t sz = strlen(src)+1; + char* dst = (char*)ma_malloc(sz, pAllocationCallbacks); + if (dst == NULL) { + return NULL; + } + + ma_strcpy_s(dst, sz, src); + + return dst; +} + + +#include <errno.h> +static ma_result ma_result_from_errno(int e) +{ + switch (e) + { + case 0: return MA_SUCCESS; + #ifdef EPERM + case EPERM: return MA_INVALID_OPERATION; + #endif + #ifdef ENOENT + case ENOENT: return MA_DOES_NOT_EXIST; + #endif + #ifdef ESRCH + case ESRCH: return MA_DOES_NOT_EXIST; + #endif + #ifdef EINTR + case EINTR: return MA_INTERRUPT; + #endif + #ifdef EIO + case EIO: return MA_IO_ERROR; + #endif + #ifdef ENXIO + case ENXIO: return MA_DOES_NOT_EXIST; + #endif + #ifdef E2BIG + case E2BIG: return MA_INVALID_ARGS; + #endif + #ifdef ENOEXEC + case ENOEXEC: return MA_INVALID_FILE; + #endif + #ifdef EBADF + case EBADF: return MA_INVALID_FILE; + #endif + #ifdef ECHILD + case ECHILD: return MA_ERROR; + #endif + #ifdef EAGAIN + case EAGAIN: return MA_UNAVAILABLE; + #endif + #ifdef ENOMEM + case ENOMEM: return MA_OUT_OF_MEMORY; + #endif + #ifdef EACCES + case EACCES: return MA_ACCESS_DENIED; + #endif + #ifdef EFAULT + case EFAULT: return MA_BAD_ADDRESS; + #endif + #ifdef ENOTBLK + case ENOTBLK: return MA_ERROR; + #endif + #ifdef EBUSY + case EBUSY: return MA_BUSY; + #endif + #ifdef EEXIST + case EEXIST: return MA_ALREADY_EXISTS; + #endif + #ifdef EXDEV + case EXDEV: return MA_ERROR; + #endif + #ifdef ENODEV + case ENODEV: return MA_DOES_NOT_EXIST; + #endif + #ifdef ENOTDIR + case ENOTDIR: return MA_NOT_DIRECTORY; + #endif + #ifdef EISDIR + case EISDIR: return MA_IS_DIRECTORY; + #endif + #ifdef EINVAL + case EINVAL: return MA_INVALID_ARGS; + #endif + #ifdef ENFILE + case ENFILE: return MA_TOO_MANY_OPEN_FILES; + #endif + #ifdef EMFILE + case EMFILE: return MA_TOO_MANY_OPEN_FILES; + #endif + #ifdef ENOTTY + case ENOTTY: return MA_INVALID_OPERATION; + #endif + #ifdef ETXTBSY + case ETXTBSY: return MA_BUSY; + #endif + #ifdef EFBIG + case EFBIG: return MA_TOO_BIG; + #endif + #ifdef ENOSPC + case ENOSPC: return MA_NO_SPACE; + #endif + #ifdef ESPIPE + case ESPIPE: return MA_BAD_SEEK; + #endif + #ifdef EROFS + case EROFS: return MA_ACCESS_DENIED; + #endif + #ifdef EMLINK + case EMLINK: return MA_TOO_MANY_LINKS; + #endif + #ifdef EPIPE + case EPIPE: return MA_BAD_PIPE; + #endif + #ifdef EDOM + case EDOM: return MA_OUT_OF_RANGE; + #endif + #ifdef ERANGE + case ERANGE: return MA_OUT_OF_RANGE; + #endif + #ifdef EDEADLK + case EDEADLK: return MA_DEADLOCK; + #endif + #ifdef ENAMETOOLONG + case ENAMETOOLONG: return MA_PATH_TOO_LONG; + #endif + #ifdef ENOLCK + case ENOLCK: return MA_ERROR; + #endif + #ifdef ENOSYS + case ENOSYS: return MA_NOT_IMPLEMENTED; + #endif + #ifdef ENOTEMPTY + case ENOTEMPTY: return MA_DIRECTORY_NOT_EMPTY; + #endif + #ifdef ELOOP + case ELOOP: return MA_TOO_MANY_LINKS; + #endif + #ifdef ENOMSG + case ENOMSG: return MA_NO_MESSAGE; + #endif + #ifdef EIDRM + case EIDRM: return MA_ERROR; + #endif + #ifdef ECHRNG + case ECHRNG: return MA_ERROR; + #endif + #ifdef EL2NSYNC + case EL2NSYNC: return MA_ERROR; + #endif + #ifdef EL3HLT + case EL3HLT: return MA_ERROR; + #endif + #ifdef EL3RST + case EL3RST: return MA_ERROR; + #endif + #ifdef ELNRNG + case ELNRNG: return MA_OUT_OF_RANGE; + #endif + #ifdef EUNATCH + case EUNATCH: return MA_ERROR; + #endif + #ifdef ENOCSI + case ENOCSI: return MA_ERROR; + #endif + #ifdef EL2HLT + case EL2HLT: return MA_ERROR; + #endif + #ifdef EBADE + case EBADE: return MA_ERROR; + #endif + #ifdef EBADR + case EBADR: return MA_ERROR; + #endif + #ifdef EXFULL + case EXFULL: return MA_ERROR; + #endif + #ifdef ENOANO + case ENOANO: return MA_ERROR; + #endif + #ifdef EBADRQC + case EBADRQC: return MA_ERROR; + #endif + #ifdef EBADSLT + case EBADSLT: return MA_ERROR; + #endif + #ifdef EBFONT + case EBFONT: return MA_INVALID_FILE; + #endif + #ifdef ENOSTR + case ENOSTR: return MA_ERROR; + #endif + #ifdef ENODATA + case ENODATA: return MA_NO_DATA_AVAILABLE; + #endif + #ifdef ETIME + case ETIME: return MA_TIMEOUT; + #endif + #ifdef ENOSR + case ENOSR: return MA_NO_DATA_AVAILABLE; + #endif + #ifdef ENONET + case ENONET: return MA_NO_NETWORK; + #endif + #ifdef ENOPKG + case ENOPKG: return MA_ERROR; + #endif + #ifdef EREMOTE + case EREMOTE: return MA_ERROR; + #endif + #ifdef ENOLINK + case ENOLINK: return MA_ERROR; + #endif + #ifdef EADV + case EADV: return MA_ERROR; + #endif + #ifdef ESRMNT + case ESRMNT: return MA_ERROR; + #endif + #ifdef ECOMM + case ECOMM: return MA_ERROR; + #endif + #ifdef EPROTO + case EPROTO: return MA_ERROR; + #endif + #ifdef EMULTIHOP + case EMULTIHOP: return MA_ERROR; + #endif + #ifdef EDOTDOT + case EDOTDOT: return MA_ERROR; + #endif + #ifdef EBADMSG + case EBADMSG: return MA_BAD_MESSAGE; + #endif + #ifdef EOVERFLOW + case EOVERFLOW: return MA_TOO_BIG; + #endif + #ifdef ENOTUNIQ + case ENOTUNIQ: return MA_NOT_UNIQUE; + #endif + #ifdef EBADFD + case EBADFD: return MA_ERROR; + #endif + #ifdef EREMCHG + case EREMCHG: return MA_ERROR; + #endif + #ifdef ELIBACC + case ELIBACC: return MA_ACCESS_DENIED; + #endif + #ifdef ELIBBAD + case ELIBBAD: return MA_INVALID_FILE; + #endif + #ifdef ELIBSCN + case ELIBSCN: return MA_INVALID_FILE; + #endif + #ifdef ELIBMAX + case ELIBMAX: return MA_ERROR; + #endif + #ifdef ELIBEXEC + case ELIBEXEC: return MA_ERROR; + #endif + #ifdef EILSEQ + case EILSEQ: return MA_INVALID_DATA; + #endif + #ifdef ERESTART + case ERESTART: return MA_ERROR; + #endif + #ifdef ESTRPIPE + case ESTRPIPE: return MA_ERROR; + #endif + #ifdef EUSERS + case EUSERS: return MA_ERROR; + #endif + #ifdef ENOTSOCK + case ENOTSOCK: return MA_NOT_SOCKET; + #endif + #ifdef EDESTADDRREQ + case EDESTADDRREQ: return MA_NO_ADDRESS; + #endif + #ifdef EMSGSIZE + case EMSGSIZE: return MA_TOO_BIG; + #endif + #ifdef EPROTOTYPE + case EPROTOTYPE: return MA_BAD_PROTOCOL; + #endif + #ifdef ENOPROTOOPT + case ENOPROTOOPT: return MA_PROTOCOL_UNAVAILABLE; + #endif + #ifdef EPROTONOSUPPORT + case EPROTONOSUPPORT: return MA_PROTOCOL_NOT_SUPPORTED; + #endif + #ifdef ESOCKTNOSUPPORT + case ESOCKTNOSUPPORT: return MA_SOCKET_NOT_SUPPORTED; + #endif + #ifdef EOPNOTSUPP + case EOPNOTSUPP: return MA_INVALID_OPERATION; + #endif + #ifdef EPFNOSUPPORT + case EPFNOSUPPORT: return MA_PROTOCOL_FAMILY_NOT_SUPPORTED; + #endif + #ifdef EAFNOSUPPORT + case EAFNOSUPPORT: return MA_ADDRESS_FAMILY_NOT_SUPPORTED; + #endif + #ifdef EADDRINUSE + case EADDRINUSE: return MA_ALREADY_IN_USE; + #endif + #ifdef EADDRNOTAVAIL + case EADDRNOTAVAIL: return MA_ERROR; + #endif + #ifdef ENETDOWN + case ENETDOWN: return MA_NO_NETWORK; + #endif + #ifdef ENETUNREACH + case ENETUNREACH: return MA_NO_NETWORK; + #endif + #ifdef ENETRESET + case ENETRESET: return MA_NO_NETWORK; + #endif + #ifdef ECONNABORTED + case ECONNABORTED: return MA_NO_NETWORK; + #endif + #ifdef ECONNRESET + case ECONNRESET: return MA_CONNECTION_RESET; + #endif + #ifdef ENOBUFS + case ENOBUFS: return MA_NO_SPACE; + #endif + #ifdef EISCONN + case EISCONN: return MA_ALREADY_CONNECTED; + #endif + #ifdef ENOTCONN + case ENOTCONN: return MA_NOT_CONNECTED; + #endif + #ifdef ESHUTDOWN + case ESHUTDOWN: return MA_ERROR; + #endif + #ifdef ETOOMANYREFS + case ETOOMANYREFS: return MA_ERROR; + #endif + #ifdef ETIMEDOUT + case ETIMEDOUT: return MA_TIMEOUT; + #endif + #ifdef ECONNREFUSED + case ECONNREFUSED: return MA_CONNECTION_REFUSED; + #endif + #ifdef EHOSTDOWN + case EHOSTDOWN: return MA_NO_HOST; + #endif + #ifdef EHOSTUNREACH + case EHOSTUNREACH: return MA_NO_HOST; + #endif + #ifdef EALREADY + case EALREADY: return MA_IN_PROGRESS; + #endif + #ifdef EINPROGRESS + case EINPROGRESS: return MA_IN_PROGRESS; + #endif + #ifdef ESTALE + case ESTALE: return MA_INVALID_FILE; + #endif + #ifdef EUCLEAN + case EUCLEAN: return MA_ERROR; + #endif + #ifdef ENOTNAM + case ENOTNAM: return MA_ERROR; + #endif + #ifdef ENAVAIL + case ENAVAIL: return MA_ERROR; + #endif + #ifdef EISNAM + case EISNAM: return MA_ERROR; + #endif + #ifdef EREMOTEIO + case EREMOTEIO: return MA_IO_ERROR; + #endif + #ifdef EDQUOT + case EDQUOT: return MA_NO_SPACE; + #endif + #ifdef ENOMEDIUM + case ENOMEDIUM: return MA_DOES_NOT_EXIST; + #endif + #ifdef EMEDIUMTYPE + case EMEDIUMTYPE: return MA_ERROR; + #endif + #ifdef ECANCELED + case ECANCELED: return MA_CANCELLED; + #endif + #ifdef ENOKEY + case ENOKEY: return MA_ERROR; + #endif + #ifdef EKEYEXPIRED + case EKEYEXPIRED: return MA_ERROR; + #endif + #ifdef EKEYREVOKED + case EKEYREVOKED: return MA_ERROR; + #endif + #ifdef EKEYREJECTED + case EKEYREJECTED: return MA_ERROR; + #endif + #ifdef EOWNERDEAD + case EOWNERDEAD: return MA_ERROR; + #endif + #ifdef ENOTRECOVERABLE + case ENOTRECOVERABLE: return MA_ERROR; + #endif + #ifdef ERFKILL + case ERFKILL: return MA_ERROR; + #endif + #ifdef EHWPOISON + case EHWPOISON: return MA_ERROR; + #endif + default: return MA_ERROR; + } +} + +MA_API ma_result ma_fopen(FILE** ppFile, const char* pFilePath, const char* pOpenMode) +{ +#if _MSC_VER && _MSC_VER >= 1400 + errno_t err; +#endif + + if (ppFile != NULL) { + *ppFile = NULL; /* Safety. */ + } + + if (pFilePath == NULL || pOpenMode == NULL || ppFile == NULL) { + return MA_INVALID_ARGS; + } + +#if _MSC_VER && _MSC_VER >= 1400 + err = fopen_s(ppFile, pFilePath, pOpenMode); + if (err != 0) { + return ma_result_from_errno(err); + } +#else +#if defined(_WIN32) || defined(__APPLE__) + *ppFile = fopen(pFilePath, pOpenMode); +#else + #if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64 && defined(_LARGEFILE64_SOURCE) + *ppFile = fopen64(pFilePath, pOpenMode); + #else + *ppFile = fopen(pFilePath, pOpenMode); + #endif +#endif + if (*ppFile == NULL) { + ma_result result = ma_result_from_errno(errno); + if (result == MA_SUCCESS) { + result = MA_ERROR; /* Just a safety check to make sure we never ever return success when pFile == NULL. */ + } + + return result; + } +#endif + + return MA_SUCCESS; +} + + + +/* +_wfopen() isn't always available in all compilation environments. + + * Windows only. + * MSVC seems to support it universally as far back as VC6 from what I can tell (haven't checked further back). + * MinGW-64 (both 32- and 64-bit) seems to support it. + * MinGW wraps it in !defined(__STRICT_ANSI__). + +This can be reviewed as compatibility issues arise. The preference is to use _wfopen_s() and _wfopen() as opposed to the wcsrtombs() +fallback, so if you notice your compiler not detecting this properly I'm happy to look at adding support. +*/ +#if defined(_WIN32) + #if defined(_MSC_VER) || defined(__MINGW64__) || !defined(__STRICT_ANSI__) + #define MA_HAS_WFOPEN + #endif +#endif + +MA_API ma_result ma_wfopen(FILE** ppFile, const wchar_t* pFilePath, const wchar_t* pOpenMode, const ma_allocation_callbacks* pAllocationCallbacks) +{ + if (ppFile != NULL) { + *ppFile = NULL; /* Safety. */ + } + + if (pFilePath == NULL || pOpenMode == NULL || ppFile == NULL) { + return MA_INVALID_ARGS; + } + +#if defined(MA_HAS_WFOPEN) + { + /* Use _wfopen() on Windows. */ + #if defined(_MSC_VER) && _MSC_VER >= 1400 + errno_t err = _wfopen_s(ppFile, pFilePath, pOpenMode); + if (err != 0) { + return ma_result_from_errno(err); + } + #else + *ppFile = _wfopen(pFilePath, pOpenMode); + if (*ppFile == NULL) { + return ma_result_from_errno(errno); + } + #endif + (void)pAllocationCallbacks; + } +#else + /* + Use fopen() on anything other than Windows. Requires a conversion. This is annoying because fopen() is locale specific. The only real way I can + think of to do this is with wcsrtombs(). Note that wcstombs() is apparently not thread-safe because it uses a static global mbstate_t object for + maintaining state. I've checked this with -std=c89 and it works, but if somebody get's a compiler error I'll look into improving compatibility. + */ + { + mbstate_t mbs; + size_t lenMB; + const wchar_t* pFilePathTemp = pFilePath; + char* pFilePathMB = NULL; + char pOpenModeMB[32] = {0}; + + /* Get the length first. */ + MA_ZERO_OBJECT(&mbs); + lenMB = wcsrtombs(NULL, &pFilePathTemp, 0, &mbs); + if (lenMB == (size_t)-1) { + return ma_result_from_errno(errno); + } + + pFilePathMB = (char*)ma_malloc(lenMB + 1, pAllocationCallbacks); + if (pFilePathMB == NULL) { + return MA_OUT_OF_MEMORY; + } + + pFilePathTemp = pFilePath; + MA_ZERO_OBJECT(&mbs); + wcsrtombs(pFilePathMB, &pFilePathTemp, lenMB + 1, &mbs); + + /* The open mode should always consist of ASCII characters so we should be able to do a trivial conversion. */ + { + size_t i = 0; + for (;;) { + if (pOpenMode[i] == 0) { + pOpenModeMB[i] = '\0'; + break; + } + + pOpenModeMB[i] = (char)pOpenMode[i]; + i += 1; + } + } + + *ppFile = fopen(pFilePathMB, pOpenModeMB); + + ma_free(pFilePathMB, pAllocationCallbacks); + } + + if (*ppFile == NULL) { + return MA_ERROR; + } +#endif + + return MA_SUCCESS; +} + + + +static MA_INLINE void ma_copy_memory_64(void* dst, const void* src, ma_uint64 sizeInBytes) +{ +#if 0xFFFFFFFFFFFFFFFF <= MA_SIZE_MAX + MA_COPY_MEMORY(dst, src, (size_t)sizeInBytes); +#else + while (sizeInBytes > 0) { + ma_uint64 bytesToCopyNow = sizeInBytes; + if (bytesToCopyNow > MA_SIZE_MAX) { + bytesToCopyNow = MA_SIZE_MAX; + } + + MA_COPY_MEMORY(dst, src, (size_t)bytesToCopyNow); /* Safe cast to size_t. */ + + sizeInBytes -= bytesToCopyNow; + dst = ( void*)(( ma_uint8*)dst + bytesToCopyNow); + src = (const void*)((const ma_uint8*)src + bytesToCopyNow); + } +#endif +} + +static MA_INLINE void ma_zero_memory_64(void* dst, ma_uint64 sizeInBytes) +{ +#if 0xFFFFFFFFFFFFFFFF <= MA_SIZE_MAX + MA_ZERO_MEMORY(dst, (size_t)sizeInBytes); +#else + while (sizeInBytes > 0) { + ma_uint64 bytesToZeroNow = sizeInBytes; + if (bytesToZeroNow > MA_SIZE_MAX) { + bytesToZeroNow = MA_SIZE_MAX; + } + + MA_ZERO_MEMORY(dst, (size_t)bytesToZeroNow); /* Safe cast to size_t. */ + + sizeInBytes -= bytesToZeroNow; + dst = (void*)((ma_uint8*)dst + bytesToZeroNow); + } +#endif +} + + +/* Thanks to good old Bit Twiddling Hacks for this one: http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2 */ +static MA_INLINE unsigned int ma_next_power_of_2(unsigned int x) +{ + x--; + x |= x >> 1; + x |= x >> 2; + x |= x >> 4; + x |= x >> 8; + x |= x >> 16; + x++; + + return x; +} + +static MA_INLINE unsigned int ma_prev_power_of_2(unsigned int x) +{ + return ma_next_power_of_2(x) >> 1; +} + +static MA_INLINE unsigned int ma_round_to_power_of_2(unsigned int x) +{ + unsigned int prev = ma_prev_power_of_2(x); + unsigned int next = ma_next_power_of_2(x); + if ((next - x) > (x - prev)) { + return prev; + } else { + return next; + } +} + +static MA_INLINE unsigned int ma_count_set_bits(unsigned int x) +{ + unsigned int count = 0; + while (x != 0) { + if (x & 1) { + count += 1; + } + + x = x >> 1; + } + + return count; +} + + + +/* Clamps an f32 sample to -1..1 */ +static MA_INLINE float ma_clip_f32(float x) +{ + if (x < -1) return -1; + if (x > +1) return +1; + return x; +} + +static MA_INLINE float ma_mix_f32(float x, float y, float a) +{ + return x*(1-a) + y*a; +} +static MA_INLINE float ma_mix_f32_fast(float x, float y, float a) +{ + float r0 = (y - x); + float r1 = r0*a; + return x + r1; + /*return x + (y - x)*a;*/ +} + + +#if defined(MA_SUPPORT_SSE2) +static MA_INLINE __m128 ma_mix_f32_fast__sse2(__m128 x, __m128 y, __m128 a) +{ + return _mm_add_ps(x, _mm_mul_ps(_mm_sub_ps(y, x), a)); +} +#endif +#if defined(MA_SUPPORT_AVX2) +static MA_INLINE __m256 ma_mix_f32_fast__avx2(__m256 x, __m256 y, __m256 a) +{ + return _mm256_add_ps(x, _mm256_mul_ps(_mm256_sub_ps(y, x), a)); +} +#endif +#if defined(MA_SUPPORT_AVX512) +static MA_INLINE __m512 ma_mix_f32_fast__avx512(__m512 x, __m512 y, __m512 a) +{ + return _mm512_add_ps(x, _mm512_mul_ps(_mm512_sub_ps(y, x), a)); +} +#endif +#if defined(MA_SUPPORT_NEON) +static MA_INLINE float32x4_t ma_mix_f32_fast__neon(float32x4_t x, float32x4_t y, float32x4_t a) +{ + return vaddq_f32(x, vmulq_f32(vsubq_f32(y, x), a)); +} +#endif + + +static MA_INLINE double ma_mix_f64(double x, double y, double a) +{ + return x*(1-a) + y*a; +} +static MA_INLINE double ma_mix_f64_fast(double x, double y, double a) +{ + return x + (y - x)*a; +} + +static MA_INLINE float ma_scale_to_range_f32(float x, float lo, float hi) +{ + return lo + x*(hi-lo); +} + + +/* +Greatest common factor using Euclid's algorithm iteratively. +*/ +static MA_INLINE ma_uint32 ma_gcf_u32(ma_uint32 a, ma_uint32 b) +{ + for (;;) { + if (b == 0) { + break; + } else { + ma_uint32 t = a; + a = b; + b = t % a; + } + } + + return a; +} + + +/* +Random Number Generation + +miniaudio uses the LCG random number generation algorithm. This is good enough for audio. + +Note that miniaudio's global LCG implementation uses global state which is _not_ thread-local. When this is called across +multiple threads, results will be unpredictable. However, it won't crash and results will still be random enough for +miniaudio's purposes. +*/ +#ifndef MA_DEFAULT_LCG_SEED +#define MA_DEFAULT_LCG_SEED 4321 +#endif + +#define MA_LCG_M 2147483647 +#define MA_LCG_A 48271 +#define MA_LCG_C 0 + +static ma_lcg g_maLCG = {MA_DEFAULT_LCG_SEED}; /* Non-zero initial seed. Use ma_seed() to use an explicit seed. */ + +static MA_INLINE void ma_lcg_seed(ma_lcg* pLCG, ma_int32 seed) +{ + MA_ASSERT(pLCG != NULL); + pLCG->state = seed; +} + +static MA_INLINE ma_int32 ma_lcg_rand_s32(ma_lcg* pLCG) +{ + pLCG->state = (MA_LCG_A * pLCG->state + MA_LCG_C) % MA_LCG_M; + return pLCG->state; +} + +static MA_INLINE ma_uint32 ma_lcg_rand_u32(ma_lcg* pLCG) +{ + return (ma_uint32)ma_lcg_rand_s32(pLCG); +} + +static MA_INLINE ma_int16 ma_lcg_rand_s16(ma_lcg* pLCG) +{ + return (ma_int16)(ma_lcg_rand_s32(pLCG) & 0xFFFF); +} + +static MA_INLINE double ma_lcg_rand_f64(ma_lcg* pLCG) +{ + return ma_lcg_rand_s32(pLCG) / (double)0x7FFFFFFF; +} + +static MA_INLINE float ma_lcg_rand_f32(ma_lcg* pLCG) +{ + return (float)ma_lcg_rand_f64(pLCG); +} + +static MA_INLINE float ma_lcg_rand_range_f32(ma_lcg* pLCG, float lo, float hi) +{ + return ma_scale_to_range_f32(ma_lcg_rand_f32(pLCG), lo, hi); +} + +static MA_INLINE ma_int32 ma_lcg_rand_range_s32(ma_lcg* pLCG, ma_int32 lo, ma_int32 hi) +{ + if (lo == hi) { + return lo; + } + + return lo + ma_lcg_rand_u32(pLCG) / (0xFFFFFFFF / (hi - lo + 1) + 1); +} + + + +static MA_INLINE void ma_seed(ma_int32 seed) +{ + ma_lcg_seed(&g_maLCG, seed); +} + +static MA_INLINE ma_int32 ma_rand_s32() +{ + return ma_lcg_rand_s32(&g_maLCG); +} + +static MA_INLINE ma_uint32 ma_rand_u32() +{ + return ma_lcg_rand_u32(&g_maLCG); +} + +static MA_INLINE double ma_rand_f64() +{ + return ma_lcg_rand_f64(&g_maLCG); +} + +static MA_INLINE float ma_rand_f32() +{ + return ma_lcg_rand_f32(&g_maLCG); +} + +static MA_INLINE float ma_rand_range_f32(float lo, float hi) +{ + return ma_lcg_rand_range_f32(&g_maLCG, lo, hi); +} + +static MA_INLINE ma_int32 ma_rand_range_s32(ma_int32 lo, ma_int32 hi) +{ + return ma_lcg_rand_range_s32(&g_maLCG, lo, hi); +} + + +static MA_INLINE float ma_dither_f32_rectangle(float ditherMin, float ditherMax) +{ + return ma_rand_range_f32(ditherMin, ditherMax); +} + +static MA_INLINE float ma_dither_f32_triangle(float ditherMin, float ditherMax) +{ + float a = ma_rand_range_f32(ditherMin, 0); + float b = ma_rand_range_f32(0, ditherMax); + return a + b; +} + +static MA_INLINE float ma_dither_f32(ma_dither_mode ditherMode, float ditherMin, float ditherMax) +{ + if (ditherMode == ma_dither_mode_rectangle) { + return ma_dither_f32_rectangle(ditherMin, ditherMax); + } + if (ditherMode == ma_dither_mode_triangle) { + return ma_dither_f32_triangle(ditherMin, ditherMax); + } + + return 0; +} + +static MA_INLINE ma_int32 ma_dither_s32(ma_dither_mode ditherMode, ma_int32 ditherMin, ma_int32 ditherMax) +{ + if (ditherMode == ma_dither_mode_rectangle) { + ma_int32 a = ma_rand_range_s32(ditherMin, ditherMax); + return a; + } + if (ditherMode == ma_dither_mode_triangle) { + ma_int32 a = ma_rand_range_s32(ditherMin, 0); + ma_int32 b = ma_rand_range_s32(0, ditherMax); + return a + b; + } + + return 0; +} + + +/****************************************************************************** + +Atomics + +******************************************************************************/ +#if defined(__clang__) + #if defined(__has_builtin) + #if __has_builtin(__sync_swap) + #define MA_HAS_SYNC_SWAP + #endif + #endif +#elif defined(__GNUC__) + #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC__ >= 7) + #define MA_HAS_GNUC_ATOMICS + #endif +#endif + +#if defined(_WIN32) && !defined(__GNUC__) && !defined(__clang__) +#define ma_memory_barrier() MemoryBarrier() +#define ma_atomic_exchange_32(a, b) InterlockedExchange((LONG*)a, (LONG)b) +#define ma_atomic_exchange_64(a, b) InterlockedExchange64((LONGLONG*)a, (LONGLONG)b) +#define ma_atomic_increment_32(a) InterlockedIncrement((LONG*)a) +#define ma_atomic_decrement_32(a) InterlockedDecrement((LONG*)a) +#else +#define ma_memory_barrier() __sync_synchronize() +#if defined(MA_HAS_SYNC_SWAP) + #define ma_atomic_exchange_32(a, b) __sync_swap(a, b) + #define ma_atomic_exchange_64(a, b) __sync_swap(a, b) +#elif defined(MA_HAS_GNUC_ATOMICS) + #define ma_atomic_exchange_32(a, b) (void)__atomic_exchange_n(a, b, __ATOMIC_ACQ_REL) + #define ma_atomic_exchange_64(a, b) (void)__atomic_exchange_n(a, b, __ATOMIC_ACQ_REL) +#else + #define ma_atomic_exchange_32(a, b) __sync_synchronize(); (void)__sync_lock_test_and_set(a, b) + #define ma_atomic_exchange_64(a, b) __sync_synchronize(); (void)__sync_lock_test_and_set(a, b) +#endif +#define ma_atomic_increment_32(a) __sync_add_and_fetch(a, 1) +#define ma_atomic_decrement_32(a) __sync_sub_and_fetch(a, 1) +#endif + +#ifdef MA_64BIT +#define ma_atomic_exchange_ptr ma_atomic_exchange_64 +#endif +#ifdef MA_32BIT +#define ma_atomic_exchange_ptr ma_atomic_exchange_32 +#endif + + +static void* ma__malloc_default(size_t sz, void* pUserData) +{ + (void)pUserData; + return MA_MALLOC(sz); +} + +static void* ma__realloc_default(void* p, size_t sz, void* pUserData) +{ + (void)pUserData; + return MA_REALLOC(p, sz); +} + +static void ma__free_default(void* p, void* pUserData) +{ + (void)pUserData; + MA_FREE(p); +} + + +static void* ma__malloc_from_callbacks(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks) +{ + if (pAllocationCallbacks == NULL) { + return NULL; + } + + if (pAllocationCallbacks->onMalloc != NULL) { + return pAllocationCallbacks->onMalloc(sz, pAllocationCallbacks->pUserData); + } + + /* Try using realloc(). */ + if (pAllocationCallbacks->onRealloc != NULL) { + return pAllocationCallbacks->onRealloc(NULL, sz, pAllocationCallbacks->pUserData); + } + + return NULL; +} + +static void* ma__realloc_from_callbacks(void* p, size_t szNew, size_t szOld, const ma_allocation_callbacks* pAllocationCallbacks) +{ + if (pAllocationCallbacks == NULL) { + return NULL; + } + + if (pAllocationCallbacks->onRealloc != NULL) { + return pAllocationCallbacks->onRealloc(p, szNew, pAllocationCallbacks->pUserData); + } + + /* Try emulating realloc() in terms of malloc()/free(). */ + if (pAllocationCallbacks->onMalloc != NULL && pAllocationCallbacks->onFree != NULL) { + void* p2; + + p2 = pAllocationCallbacks->onMalloc(szNew, pAllocationCallbacks->pUserData); + if (p2 == NULL) { + return NULL; + } + + if (p != NULL) { + MA_COPY_MEMORY(p2, p, szOld); + pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData); + } + + return p2; + } + + return NULL; +} + +static MA_INLINE void* ma__calloc_from_callbacks(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks) +{ + void* p = ma__malloc_from_callbacks(sz, pAllocationCallbacks); + if (p != NULL) { + MA_ZERO_MEMORY(p, sz); + } + + return p; +} + +static void ma__free_from_callbacks(void* p, const ma_allocation_callbacks* pAllocationCallbacks) +{ + if (p == NULL || pAllocationCallbacks == NULL) { + return; + } + + if (pAllocationCallbacks->onFree != NULL) { + pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData); + } +} + +static ma_allocation_callbacks ma_allocation_callbacks_init_default() +{ + ma_allocation_callbacks callbacks; + callbacks.pUserData = NULL; + callbacks.onMalloc = ma__malloc_default; + callbacks.onRealloc = ma__realloc_default; + callbacks.onFree = ma__free_default; + + return callbacks; +} + +static ma_result ma_allocation_callbacks_init_copy(ma_allocation_callbacks* pDst, const ma_allocation_callbacks* pSrc) +{ + if (pDst == NULL) { + return MA_INVALID_ARGS; + } + + if (pSrc == NULL) { + *pDst = ma_allocation_callbacks_init_default(); + } else { + if (pSrc->pUserData == NULL && pSrc->onFree == NULL && pSrc->onMalloc == NULL && pSrc->onRealloc == NULL) { + *pDst = ma_allocation_callbacks_init_default(); + } else { + if (pSrc->onFree == NULL || (pSrc->onMalloc == NULL && pSrc->onRealloc == NULL)) { + return MA_INVALID_ARGS; /* Invalid allocation callbacks. */ + } else { + *pDst = *pSrc; + } + } + } + + return MA_SUCCESS; +} + + +MA_API ma_uint64 ma_calculate_frame_count_after_resampling(ma_uint32 sampleRateOut, ma_uint32 sampleRateIn, ma_uint64 frameCountIn) +{ + /* For robustness we're going to use a resampler object to calculate this since that already has a way of calculating this. */ + ma_result result; + ma_uint64 frameCountOut; + ma_resampler_config config; + ma_resampler resampler; + + config = ma_resampler_config_init(ma_format_s16, 1, sampleRateIn, sampleRateOut, ma_resample_algorithm_linear); + result = ma_resampler_init(&config, &resampler); + if (result != MA_SUCCESS) { + return 0; + } + + frameCountOut = ma_resampler_get_expected_output_frame_count(&resampler, frameCountIn); + + ma_resampler_uninit(&resampler); + return frameCountOut; +} + +#ifndef MA_DATA_CONVERTER_STACK_BUFFER_SIZE +#define MA_DATA_CONVERTER_STACK_BUFFER_SIZE 4096 +#endif + +/************************************************************************************************************************************************************ +************************************************************************************************************************************************************* + +DEVICE I/O +========== + +************************************************************************************************************************************************************* +************************************************************************************************************************************************************/ +#ifndef MA_NO_DEVICE_IO +#ifdef MA_WIN32 + #include <objbase.h> + #include <mmreg.h> + #include <mmsystem.h> +#endif + +#if defined(MA_APPLE) && (__MAC_OS_X_VERSION_MIN_REQUIRED < 101200) + #include <mach/mach_time.h> /* For mach_absolute_time() */ +#endif + +#ifdef MA_POSIX + #include <sys/time.h> + #include <sys/types.h> + #include <unistd.h> + #include <dlfcn.h> +#endif + +/* +Unfortunately using runtime linking for pthreads causes problems. This has occurred for me when testing on FreeBSD. When +using runtime linking, deadlocks can occur (for me it happens when loading data from fread()). It turns out that doing +compile-time linking fixes this. I'm not sure why this happens, but the safest way I can think of to fix this is to simply +disable runtime linking by default. To enable runtime linking, #define this before the implementation of this file. I am +not officially supporting this, but I'm leaving it here in case it's useful for somebody, somewhere. +*/ +/*#define MA_USE_RUNTIME_LINKING_FOR_PTHREAD*/ + +/* Disable run-time linking on certain backends. */ +#ifndef MA_NO_RUNTIME_LINKING + #if defined(MA_ANDROID) || defined(MA_EMSCRIPTEN) + #define MA_NO_RUNTIME_LINKING + #endif +#endif + +/* +Check if we have the necessary development packages for each backend at the top so we can use this to determine whether or not +certain unused functions and variables can be excluded from the build to avoid warnings. +*/ +#ifdef MA_ENABLE_WASAPI + #define MA_HAS_WASAPI /* Every compiler should support WASAPI */ +#endif +#ifdef MA_ENABLE_DSOUND + #define MA_HAS_DSOUND /* Every compiler should support DirectSound. */ +#endif +#ifdef MA_ENABLE_WINMM + #define MA_HAS_WINMM /* Every compiler I'm aware of supports WinMM. */ +#endif +#ifdef MA_ENABLE_ALSA + #define MA_HAS_ALSA + #ifdef MA_NO_RUNTIME_LINKING + #ifdef __has_include + #if !__has_include(<alsa/asoundlib.h>) + #undef MA_HAS_ALSA + #endif + #endif + #endif +#endif +#ifdef MA_ENABLE_PULSEAUDIO + #define MA_HAS_PULSEAUDIO + #ifdef MA_NO_RUNTIME_LINKING + #ifdef __has_include + #if !__has_include(<pulse/pulseaudio.h>) + #undef MA_HAS_PULSEAUDIO + #endif + #endif + #endif +#endif +#ifdef MA_ENABLE_JACK + #define MA_HAS_JACK + #ifdef MA_NO_RUNTIME_LINKING + #ifdef __has_include + #if !__has_include(<jack/jack.h>) + #undef MA_HAS_JACK + #endif + #endif + #endif +#endif +#ifdef MA_ENABLE_COREAUDIO + #define MA_HAS_COREAUDIO +#endif +#ifdef MA_ENABLE_SNDIO + #define MA_HAS_SNDIO +#endif +#ifdef MA_ENABLE_AUDIO4 + #define MA_HAS_AUDIO4 +#endif +#ifdef MA_ENABLE_OSS + #define MA_HAS_OSS +#endif +#ifdef MA_ENABLE_AAUDIO + #define MA_HAS_AAUDIO +#endif +#ifdef MA_ENABLE_OPENSL + #define MA_HAS_OPENSL +#endif +#ifdef MA_ENABLE_WEBAUDIO + #define MA_HAS_WEBAUDIO +#endif +#ifdef MA_ENABLE_NULL + #define MA_HAS_NULL /* Everything supports the null backend. */ +#endif + +MA_API const char* ma_get_backend_name(ma_backend backend) +{ + switch (backend) + { + case ma_backend_wasapi: return "WASAPI"; + case ma_backend_dsound: return "DirectSound"; + case ma_backend_winmm: return "WinMM"; + case ma_backend_coreaudio: return "Core Audio"; + case ma_backend_sndio: return "sndio"; + case ma_backend_audio4: return "audio(4)"; + case ma_backend_oss: return "OSS"; + case ma_backend_pulseaudio: return "PulseAudio"; + case ma_backend_alsa: return "ALSA"; + case ma_backend_jack: return "JACK"; + case ma_backend_aaudio: return "AAudio"; + case ma_backend_opensl: return "OpenSL|ES"; + case ma_backend_webaudio: return "Web Audio"; + case ma_backend_null: return "Null"; + default: return "Unknown"; + } +} + +MA_API ma_bool32 ma_is_loopback_supported(ma_backend backend) +{ + switch (backend) + { + case ma_backend_wasapi: return MA_TRUE; + case ma_backend_dsound: return MA_FALSE; + case ma_backend_winmm: return MA_FALSE; + case ma_backend_coreaudio: return MA_FALSE; + case ma_backend_sndio: return MA_FALSE; + case ma_backend_audio4: return MA_FALSE; + case ma_backend_oss: return MA_FALSE; + case ma_backend_pulseaudio: return MA_FALSE; + case ma_backend_alsa: return MA_FALSE; + case ma_backend_jack: return MA_FALSE; + case ma_backend_aaudio: return MA_FALSE; + case ma_backend_opensl: return MA_FALSE; + case ma_backend_webaudio: return MA_FALSE; + case ma_backend_null: return MA_FALSE; + default: return MA_FALSE; + } +} + + + +#ifdef MA_WIN32 + #define MA_THREADCALL WINAPI + typedef unsigned long ma_thread_result; +#else + #define MA_THREADCALL + typedef void* ma_thread_result; +#endif +typedef ma_thread_result (MA_THREADCALL * ma_thread_entry_proc)(void* pData); + +#ifdef MA_WIN32 +static ma_result ma_result_from_GetLastError(DWORD error) +{ + switch (error) + { + case ERROR_SUCCESS: return MA_SUCCESS; + case ERROR_PATH_NOT_FOUND: return MA_DOES_NOT_EXIST; + case ERROR_TOO_MANY_OPEN_FILES: return MA_TOO_MANY_OPEN_FILES; + case ERROR_NOT_ENOUGH_MEMORY: return MA_OUT_OF_MEMORY; + case ERROR_DISK_FULL: return MA_NO_SPACE; + case ERROR_HANDLE_EOF: return MA_END_OF_FILE; + case ERROR_NEGATIVE_SEEK: return MA_BAD_SEEK; + case ERROR_INVALID_PARAMETER: return MA_INVALID_ARGS; + case ERROR_ACCESS_DENIED: return MA_ACCESS_DENIED; + case ERROR_SEM_TIMEOUT: return MA_TIMEOUT; + case ERROR_FILE_NOT_FOUND: return MA_DOES_NOT_EXIST; + default: break; + } + + return MA_ERROR; +} + +/* WASAPI error codes. */ +#define MA_AUDCLNT_E_NOT_INITIALIZED ((HRESULT)0x88890001) +#define MA_AUDCLNT_E_ALREADY_INITIALIZED ((HRESULT)0x88890002) +#define MA_AUDCLNT_E_WRONG_ENDPOINT_TYPE ((HRESULT)0x88890003) +#define MA_AUDCLNT_E_DEVICE_INVALIDATED ((HRESULT)0x88890004) +#define MA_AUDCLNT_E_NOT_STOPPED ((HRESULT)0x88890005) +#define MA_AUDCLNT_E_BUFFER_TOO_LARGE ((HRESULT)0x88890006) +#define MA_AUDCLNT_E_OUT_OF_ORDER ((HRESULT)0x88890007) +#define MA_AUDCLNT_E_UNSUPPORTED_FORMAT ((HRESULT)0x88890008) +#define MA_AUDCLNT_E_INVALID_SIZE ((HRESULT)0x88890009) +#define MA_AUDCLNT_E_DEVICE_IN_USE ((HRESULT)0x8889000A) +#define MA_AUDCLNT_E_BUFFER_OPERATION_PENDING ((HRESULT)0x8889000B) +#define MA_AUDCLNT_E_THREAD_NOT_REGISTERED ((HRESULT)0x8889000C) +#define MA_AUDCLNT_E_NO_SINGLE_PROCESS ((HRESULT)0x8889000D) +#define MA_AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED ((HRESULT)0x8889000E) +#define MA_AUDCLNT_E_ENDPOINT_CREATE_FAILED ((HRESULT)0x8889000F) +#define MA_AUDCLNT_E_SERVICE_NOT_RUNNING ((HRESULT)0x88890010) +#define MA_AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED ((HRESULT)0x88890011) +#define MA_AUDCLNT_E_EXCLUSIVE_MODE_ONLY ((HRESULT)0x88890012) +#define MA_AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL ((HRESULT)0x88890013) +#define MA_AUDCLNT_E_EVENTHANDLE_NOT_SET ((HRESULT)0x88890014) +#define MA_AUDCLNT_E_INCORRECT_BUFFER_SIZE ((HRESULT)0x88890015) +#define MA_AUDCLNT_E_BUFFER_SIZE_ERROR ((HRESULT)0x88890016) +#define MA_AUDCLNT_E_CPUUSAGE_EXCEEDED ((HRESULT)0x88890017) +#define MA_AUDCLNT_E_BUFFER_ERROR ((HRESULT)0x88890018) +#define MA_AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED ((HRESULT)0x88890019) +#define MA_AUDCLNT_E_INVALID_DEVICE_PERIOD ((HRESULT)0x88890020) +#define MA_AUDCLNT_E_INVALID_STREAM_FLAG ((HRESULT)0x88890021) +#define MA_AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE ((HRESULT)0x88890022) +#define MA_AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES ((HRESULT)0x88890023) +#define MA_AUDCLNT_E_OFFLOAD_MODE_ONLY ((HRESULT)0x88890024) +#define MA_AUDCLNT_E_NONOFFLOAD_MODE_ONLY ((HRESULT)0x88890025) +#define MA_AUDCLNT_E_RESOURCES_INVALIDATED ((HRESULT)0x88890026) +#define MA_AUDCLNT_E_RAW_MODE_UNSUPPORTED ((HRESULT)0x88890027) +#define MA_AUDCLNT_E_ENGINE_PERIODICITY_LOCKED ((HRESULT)0x88890028) +#define MA_AUDCLNT_E_ENGINE_FORMAT_LOCKED ((HRESULT)0x88890029) +#define MA_AUDCLNT_E_HEADTRACKING_ENABLED ((HRESULT)0x88890030) +#define MA_AUDCLNT_E_HEADTRACKING_UNSUPPORTED ((HRESULT)0x88890040) +#define MA_AUDCLNT_S_BUFFER_EMPTY ((HRESULT)0x08890001) +#define MA_AUDCLNT_S_THREAD_ALREADY_REGISTERED ((HRESULT)0x08890002) +#define MA_AUDCLNT_S_POSITION_STALLED ((HRESULT)0x08890003) + +#define MA_DS_OK ((HRESULT)0) +#define MA_DS_NO_VIRTUALIZATION ((HRESULT)0x0878000A) +#define MA_DSERR_ALLOCATED ((HRESULT)0x8878000A) +#define MA_DSERR_CONTROLUNAVAIL ((HRESULT)0x8878001E) +#define MA_DSERR_INVALIDPARAM ((HRESULT)0x80070057) /*E_INVALIDARG*/ +#define MA_DSERR_INVALIDCALL ((HRESULT)0x88780032) +#define MA_DSERR_GENERIC ((HRESULT)0x80004005) /*E_FAIL*/ +#define MA_DSERR_PRIOLEVELNEEDED ((HRESULT)0x88780046) +#define MA_DSERR_OUTOFMEMORY ((HRESULT)0x8007000E) /*E_OUTOFMEMORY*/ +#define MA_DSERR_BADFORMAT ((HRESULT)0x88780064) +#define MA_DSERR_UNSUPPORTED ((HRESULT)0x80004001) /*E_NOTIMPL*/ +#define MA_DSERR_NODRIVER ((HRESULT)0x88780078) +#define MA_DSERR_ALREADYINITIALIZED ((HRESULT)0x88780082) +#define MA_DSERR_NOAGGREGATION ((HRESULT)0x80040110) /*CLASS_E_NOAGGREGATION*/ +#define MA_DSERR_BUFFERLOST ((HRESULT)0x88780096) +#define MA_DSERR_OTHERAPPHASPRIO ((HRESULT)0x887800A0) +#define MA_DSERR_UNINITIALIZED ((HRESULT)0x887800AA) +#define MA_DSERR_NOINTERFACE ((HRESULT)0x80004002) /*E_NOINTERFACE*/ +#define MA_DSERR_ACCESSDENIED ((HRESULT)0x80070005) /*E_ACCESSDENIED*/ +#define MA_DSERR_BUFFERTOOSMALL ((HRESULT)0x887800B4) +#define MA_DSERR_DS8_REQUIRED ((HRESULT)0x887800BE) +#define MA_DSERR_SENDLOOP ((HRESULT)0x887800C8) +#define MA_DSERR_BADSENDBUFFERGUID ((HRESULT)0x887800D2) +#define MA_DSERR_OBJECTNOTFOUND ((HRESULT)0x88781161) +#define MA_DSERR_FXUNAVAILABLE ((HRESULT)0x887800DC) + +static ma_result ma_result_from_HRESULT(HRESULT hr) +{ + switch (hr) + { + case NOERROR: return MA_SUCCESS; + /*case S_OK: return MA_SUCCESS;*/ + + case E_POINTER: return MA_INVALID_ARGS; + case E_UNEXPECTED: return MA_ERROR; + case E_NOTIMPL: return MA_NOT_IMPLEMENTED; + case E_OUTOFMEMORY: return MA_OUT_OF_MEMORY; + case E_INVALIDARG: return MA_INVALID_ARGS; + case E_NOINTERFACE: return MA_API_NOT_FOUND; + case E_HANDLE: return MA_INVALID_ARGS; + case E_ABORT: return MA_ERROR; + case E_FAIL: return MA_ERROR; + case E_ACCESSDENIED: return MA_ACCESS_DENIED; + + /* WASAPI */ + case MA_AUDCLNT_E_NOT_INITIALIZED: return MA_DEVICE_NOT_INITIALIZED; + case MA_AUDCLNT_E_ALREADY_INITIALIZED: return MA_DEVICE_ALREADY_INITIALIZED; + case MA_AUDCLNT_E_WRONG_ENDPOINT_TYPE: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_DEVICE_INVALIDATED: return MA_UNAVAILABLE; + case MA_AUDCLNT_E_NOT_STOPPED: return MA_DEVICE_NOT_STOPPED; + case MA_AUDCLNT_E_BUFFER_TOO_LARGE: return MA_TOO_BIG; + case MA_AUDCLNT_E_OUT_OF_ORDER: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_UNSUPPORTED_FORMAT: return MA_FORMAT_NOT_SUPPORTED; + case MA_AUDCLNT_E_INVALID_SIZE: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_DEVICE_IN_USE: return MA_BUSY; + case MA_AUDCLNT_E_BUFFER_OPERATION_PENDING: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_THREAD_NOT_REGISTERED: return MA_DOES_NOT_EXIST; + case MA_AUDCLNT_E_NO_SINGLE_PROCESS: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED: return MA_SHARE_MODE_NOT_SUPPORTED; + case MA_AUDCLNT_E_ENDPOINT_CREATE_FAILED: return MA_FAILED_TO_OPEN_BACKEND_DEVICE; + case MA_AUDCLNT_E_SERVICE_NOT_RUNNING: return MA_NOT_CONNECTED; + case MA_AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_EXCLUSIVE_MODE_ONLY: return MA_SHARE_MODE_NOT_SUPPORTED; + case MA_AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_EVENTHANDLE_NOT_SET: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_INCORRECT_BUFFER_SIZE: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_BUFFER_SIZE_ERROR: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_CPUUSAGE_EXCEEDED: return MA_ERROR; + case MA_AUDCLNT_E_BUFFER_ERROR: return MA_ERROR; + case MA_AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_INVALID_DEVICE_PERIOD: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_INVALID_STREAM_FLAG: return MA_INVALID_ARGS; + case MA_AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES: return MA_OUT_OF_MEMORY; + case MA_AUDCLNT_E_OFFLOAD_MODE_ONLY: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_NONOFFLOAD_MODE_ONLY: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_RESOURCES_INVALIDATED: return MA_INVALID_DATA; + case MA_AUDCLNT_E_RAW_MODE_UNSUPPORTED: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_ENGINE_PERIODICITY_LOCKED: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_ENGINE_FORMAT_LOCKED: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_HEADTRACKING_ENABLED: return MA_INVALID_OPERATION; + case MA_AUDCLNT_E_HEADTRACKING_UNSUPPORTED: return MA_INVALID_OPERATION; + case MA_AUDCLNT_S_BUFFER_EMPTY: return MA_NO_SPACE; + case MA_AUDCLNT_S_THREAD_ALREADY_REGISTERED: return MA_ALREADY_EXISTS; + case MA_AUDCLNT_S_POSITION_STALLED: return MA_ERROR; + + /* DirectSound */ + /*case MA_DS_OK: return MA_SUCCESS;*/ /* S_OK */ + case MA_DS_NO_VIRTUALIZATION: return MA_SUCCESS; + case MA_DSERR_ALLOCATED: return MA_ALREADY_IN_USE; + case MA_DSERR_CONTROLUNAVAIL: return MA_INVALID_OPERATION; + /*case MA_DSERR_INVALIDPARAM: return MA_INVALID_ARGS;*/ /* E_INVALIDARG */ + case MA_DSERR_INVALIDCALL: return MA_INVALID_OPERATION; + /*case MA_DSERR_GENERIC: return MA_ERROR;*/ /* E_FAIL */ + case MA_DSERR_PRIOLEVELNEEDED: return MA_INVALID_OPERATION; + /*case MA_DSERR_OUTOFMEMORY: return MA_OUT_OF_MEMORY;*/ /* E_OUTOFMEMORY */ + case MA_DSERR_BADFORMAT: return MA_FORMAT_NOT_SUPPORTED; + /*case MA_DSERR_UNSUPPORTED: return MA_NOT_IMPLEMENTED;*/ /* E_NOTIMPL */ + case MA_DSERR_NODRIVER: return MA_FAILED_TO_INIT_BACKEND; + case MA_DSERR_ALREADYINITIALIZED: return MA_DEVICE_ALREADY_INITIALIZED; + case MA_DSERR_NOAGGREGATION: return MA_ERROR; + case MA_DSERR_BUFFERLOST: return MA_UNAVAILABLE; + case MA_DSERR_OTHERAPPHASPRIO: return MA_ACCESS_DENIED; + case MA_DSERR_UNINITIALIZED: return MA_DEVICE_NOT_INITIALIZED; + /*case MA_DSERR_NOINTERFACE: return MA_API_NOT_FOUND;*/ /* E_NOINTERFACE */ + /*case MA_DSERR_ACCESSDENIED: return MA_ACCESS_DENIED;*/ /* E_ACCESSDENIED */ + case MA_DSERR_BUFFERTOOSMALL: return MA_NO_SPACE; + case MA_DSERR_DS8_REQUIRED: return MA_INVALID_OPERATION; + case MA_DSERR_SENDLOOP: return MA_DEADLOCK; + case MA_DSERR_BADSENDBUFFERGUID: return MA_INVALID_ARGS; + case MA_DSERR_OBJECTNOTFOUND: return MA_NO_DEVICE; + case MA_DSERR_FXUNAVAILABLE: return MA_UNAVAILABLE; + + default: return MA_ERROR; + } +} + +typedef HRESULT (WINAPI * MA_PFN_CoInitializeEx)(LPVOID pvReserved, DWORD dwCoInit); +typedef void (WINAPI * MA_PFN_CoUninitialize)(void); +typedef HRESULT (WINAPI * MA_PFN_CoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID riid, LPVOID *ppv); +typedef void (WINAPI * MA_PFN_CoTaskMemFree)(LPVOID pv); +typedef HRESULT (WINAPI * MA_PFN_PropVariantClear)(PROPVARIANT *pvar); +typedef int (WINAPI * MA_PFN_StringFromGUID2)(const GUID* const rguid, LPOLESTR lpsz, int cchMax); + +typedef HWND (WINAPI * MA_PFN_GetForegroundWindow)(void); +typedef HWND (WINAPI * MA_PFN_GetDesktopWindow)(void); + +/* Microsoft documents these APIs as returning LSTATUS, but the Win32 API shipping with some compilers do not define it. It's just a LONG. */ +typedef LONG (WINAPI * MA_PFN_RegOpenKeyExA)(HKEY hKey, LPCSTR lpSubKey, DWORD ulOptions, REGSAM samDesired, PHKEY phkResult); +typedef LONG (WINAPI * MA_PFN_RegCloseKey)(HKEY hKey); +typedef LONG (WINAPI * MA_PFN_RegQueryValueExA)(HKEY hKey, LPCSTR lpValueName, LPDWORD lpReserved, LPDWORD lpType, LPBYTE lpData, LPDWORD lpcbData); +#endif + + +#define MA_STATE_UNINITIALIZED 0 +#define MA_STATE_STOPPED 1 /* The device's default state after initialization. */ +#define MA_STATE_STARTED 2 /* The worker thread is in it's main loop waiting for the driver to request or deliver audio data. */ +#define MA_STATE_STARTING 3 /* Transitioning from a stopped state to started. */ +#define MA_STATE_STOPPING 4 /* Transitioning from a started state to stopped. */ + +#define MA_DEFAULT_PLAYBACK_DEVICE_NAME "Default Playback Device" +#define MA_DEFAULT_CAPTURE_DEVICE_NAME "Default Capture Device" + + +MA_API const char* ma_log_level_to_string(ma_uint32 logLevel) +{ + switch (logLevel) + { + case MA_LOG_LEVEL_VERBOSE: return ""; + case MA_LOG_LEVEL_INFO: return "INFO"; + case MA_LOG_LEVEL_WARNING: return "WARNING"; + case MA_LOG_LEVEL_ERROR: return "ERROR"; + default: return "ERROR"; + } +} + +/* Posts a log message. */ +static void ma_post_log_message(ma_context* pContext, ma_device* pDevice, ma_uint32 logLevel, const char* message) +{ + if (pContext == NULL) { + if (pDevice != NULL) { + pContext = pDevice->pContext; + } + } + + if (pContext == NULL) { + return; + } + +#if defined(MA_LOG_LEVEL) + if (logLevel <= MA_LOG_LEVEL) { + ma_log_proc onLog; + + #if defined(MA_DEBUG_OUTPUT) + if (logLevel <= MA_LOG_LEVEL) { + printf("%s: %s\n", ma_log_level_to_string(logLevel), message); + } + #endif + + onLog = pContext->logCallback; + if (onLog) { + onLog(pContext, pDevice, logLevel, message); + } + } +#endif +} + +/* Posts a formatted log message. */ +static void ma_post_log_messagev(ma_context* pContext, ma_device* pDevice, ma_uint32 logLevel, const char* pFormat, va_list args) +{ +#if (!defined(_MSC_VER) || _MSC_VER >= 1900) && !defined(__STRICT_ANSI__) + { + char pFormattedMessage[1024]; + vsnprintf(pFormattedMessage, sizeof(pFormattedMessage), pFormat, args); + ma_post_log_message(pContext, pDevice, logLevel, pFormattedMessage); + } +#else + { + /* + Without snprintf() we need to first measure the string and then heap allocate it. I'm only aware of Visual Studio having support for this without snprintf(), so we'll + need to restrict this branch to Visual Studio. For other compilers we need to just not support formatted logging because I don't want the security risk of overflowing + a fixed sized stack allocated buffer. + */ +#if defined (_MSC_VER) + int formattedLen; + va_list args2; + + #if _MSC_VER >= 1800 + va_copy(args2, args); + #else + args2 = args; + #endif + formattedLen = _vscprintf(pFormat, args2); + va_end(args2); + + if (formattedLen > 0) { + char* pFormattedMessage = NULL; + ma_allocation_callbacks* pAllocationCallbacks = NULL; + + /* Make sure we have a context so we can allocate memory. */ + if (pContext == NULL) { + if (pDevice != NULL) { + pContext = pDevice->pContext; + } + } + + if (pContext != NULL) { + pAllocationCallbacks = &pContext->allocationCallbacks; + } + + pFormattedMessage = (char*)ma_malloc(formattedLen + 1, pAllocationCallbacks); + if (pFormattedMessage != NULL) { + vsprintf_s(pFormattedMessage, formattedLen + 1, pFormat, args); + ma_post_log_message(pContext, pDevice, logLevel, pFormattedMessage); + ma_free(pFormattedMessage, pAllocationCallbacks); + } + } +#else + /* Can't do anything because we don't have a safe way of to emulate vsnprintf() without a manual solution. */ + (void)pContext; + (void)pDevice; + (void)logLevel; + (void)pFormat; + (void)args; +#endif + } +#endif +} + +static MA_INLINE void ma_post_log_messagef(ma_context* pContext, ma_device* pDevice, ma_uint32 logLevel, const char* pFormat, ...) +{ + va_list args; + va_start(args, pFormat); + { + ma_post_log_messagev(pContext, pDevice, logLevel, pFormat, args); + } + va_end(args); +} + +/* Posts an log message. Throw a breakpoint in here if you're needing to debug. The return value is always "resultCode". */ +static ma_result ma_context_post_error(ma_context* pContext, ma_device* pDevice, ma_uint32 logLevel, const char* message, ma_result resultCode) +{ + ma_post_log_message(pContext, pDevice, logLevel, message); + return resultCode; +} + +static ma_result ma_post_error(ma_device* pDevice, ma_uint32 logLevel, const char* message, ma_result resultCode) +{ + return ma_context_post_error(NULL, pDevice, logLevel, message, resultCode); +} + + +/******************************************************************************* + +Timing + +*******************************************************************************/ +#ifdef MA_WIN32 + static LARGE_INTEGER g_ma_TimerFrequency = {{0}}; + static void ma_timer_init(ma_timer* pTimer) + { + LARGE_INTEGER counter; + + if (g_ma_TimerFrequency.QuadPart == 0) { + QueryPerformanceFrequency(&g_ma_TimerFrequency); + } + + QueryPerformanceCounter(&counter); + pTimer->counter = counter.QuadPart; + } + + static double ma_timer_get_time_in_seconds(ma_timer* pTimer) + { + LARGE_INTEGER counter; + if (!QueryPerformanceCounter(&counter)) { + return 0; + } + + return (double)(counter.QuadPart - pTimer->counter) / g_ma_TimerFrequency.QuadPart; + } +#elif defined(MA_APPLE) && (__MAC_OS_X_VERSION_MIN_REQUIRED < 101200) + static ma_uint64 g_ma_TimerFrequency = 0; + static void ma_timer_init(ma_timer* pTimer) + { + mach_timebase_info_data_t baseTime; + mach_timebase_info(&baseTime); + g_ma_TimerFrequency = (baseTime.denom * 1e9) / baseTime.numer; + + pTimer->counter = mach_absolute_time(); + } + + static double ma_timer_get_time_in_seconds(ma_timer* pTimer) + { + ma_uint64 newTimeCounter = mach_absolute_time(); + ma_uint64 oldTimeCounter = pTimer->counter; + + return (newTimeCounter - oldTimeCounter) / g_ma_TimerFrequency; + } +#elif defined(MA_EMSCRIPTEN) + static MA_INLINE void ma_timer_init(ma_timer* pTimer) + { + pTimer->counterD = emscripten_get_now(); + } + + static MA_INLINE double ma_timer_get_time_in_seconds(ma_timer* pTimer) + { + return (emscripten_get_now() - pTimer->counterD) / 1000; /* Emscripten is in milliseconds. */ + } +#else + #if _POSIX_C_SOURCE >= 199309L + #if defined(CLOCK_MONOTONIC) + #define MA_CLOCK_ID CLOCK_MONOTONIC + #else + #define MA_CLOCK_ID CLOCK_REALTIME + #endif + + static void ma_timer_init(ma_timer* pTimer) + { + struct timespec newTime; + clock_gettime(MA_CLOCK_ID, &newTime); + + pTimer->counter = (newTime.tv_sec * 1000000000) + newTime.tv_nsec; + } + + static double ma_timer_get_time_in_seconds(ma_timer* pTimer) + { + ma_uint64 newTimeCounter; + ma_uint64 oldTimeCounter; + + struct timespec newTime; + clock_gettime(MA_CLOCK_ID, &newTime); + + newTimeCounter = (newTime.tv_sec * 1000000000) + newTime.tv_nsec; + oldTimeCounter = pTimer->counter; + + return (newTimeCounter - oldTimeCounter) / 1000000000.0; + } + #else + static void ma_timer_init(ma_timer* pTimer) + { + struct timeval newTime; + gettimeofday(&newTime, NULL); + + pTimer->counter = (newTime.tv_sec * 1000000) + newTime.tv_usec; + } + + static double ma_timer_get_time_in_seconds(ma_timer* pTimer) + { + ma_uint64 newTimeCounter; + ma_uint64 oldTimeCounter; + + struct timeval newTime; + gettimeofday(&newTime, NULL); + + newTimeCounter = (newTime.tv_sec * 1000000) + newTime.tv_usec; + oldTimeCounter = pTimer->counter; + + return (newTimeCounter - oldTimeCounter) / 1000000.0; + } + #endif +#endif + + +/******************************************************************************* + +Dynamic Linking + +*******************************************************************************/ +MA_API ma_handle ma_dlopen(ma_context* pContext, const char* filename) +{ + ma_handle handle; + +#if MA_LOG_LEVEL >= MA_LOG_LEVEL_VERBOSE + if (pContext != NULL) { + char message[256]; + ma_strappend(message, sizeof(message), "Loading library: ", filename); + ma_post_log_message(pContext, NULL, MA_LOG_LEVEL_VERBOSE, message); + } +#endif + +#ifdef _WIN32 +#ifdef MA_WIN32_DESKTOP + handle = (ma_handle)LoadLibraryA(filename); +#else + /* *sigh* It appears there is no ANSI version of LoadPackagedLibrary()... */ + WCHAR filenameW[4096]; + if (MultiByteToWideChar(CP_UTF8, 0, filename, -1, filenameW, sizeof(filenameW)) == 0) { + handle = NULL; + } else { + handle = (ma_handle)LoadPackagedLibrary(filenameW, 0); + } +#endif +#else + handle = (ma_handle)dlopen(filename, RTLD_NOW); +#endif + + /* + I'm not considering failure to load a library an error nor a warning because seamlessly falling through to a lower-priority + backend is a deliberate design choice. Instead I'm logging it as an informational message. + */ +#if MA_LOG_LEVEL >= MA_LOG_LEVEL_INFO + if (handle == NULL) { + char message[256]; + ma_strappend(message, sizeof(message), "Failed to load library: ", filename); + ma_post_log_message(pContext, NULL, MA_LOG_LEVEL_INFO, message); + } +#endif + + (void)pContext; /* It's possible for pContext to be unused. */ + return handle; +} + +MA_API void ma_dlclose(ma_context* pContext, ma_handle handle) +{ +#ifdef _WIN32 + FreeLibrary((HMODULE)handle); +#else + dlclose((void*)handle); +#endif + + (void)pContext; +} + +MA_API ma_proc ma_dlsym(ma_context* pContext, ma_handle handle, const char* symbol) +{ + ma_proc proc; + +#if MA_LOG_LEVEL >= MA_LOG_LEVEL_VERBOSE + if (pContext != NULL) { + char message[256]; + ma_strappend(message, sizeof(message), "Loading symbol: ", symbol); + ma_post_log_message(pContext, NULL, MA_LOG_LEVEL_VERBOSE, message); + } +#endif + +#ifdef _WIN32 + proc = (ma_proc)GetProcAddress((HMODULE)handle, symbol); +#else +#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wpedantic" +#endif + proc = (ma_proc)dlsym((void*)handle, symbol); +#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) + #pragma GCC diagnostic pop +#endif +#endif + +#if MA_LOG_LEVEL >= MA_LOG_LEVEL_WARNING + if (handle == NULL) { + char message[256]; + ma_strappend(message, sizeof(message), "Failed to load symbol: ", symbol); + ma_post_log_message(pContext, NULL, MA_LOG_LEVEL_WARNING, message); + } +#endif + + (void)pContext; /* It's possible for pContext to be unused. */ + return proc; +} + + +/******************************************************************************* + +Threading + +*******************************************************************************/ +#ifdef MA_WIN32 +static int ma_thread_priority_to_win32(ma_thread_priority priority) +{ + switch (priority) { + case ma_thread_priority_idle: return THREAD_PRIORITY_IDLE; + case ma_thread_priority_lowest: return THREAD_PRIORITY_LOWEST; + case ma_thread_priority_low: return THREAD_PRIORITY_BELOW_NORMAL; + case ma_thread_priority_normal: return THREAD_PRIORITY_NORMAL; + case ma_thread_priority_high: return THREAD_PRIORITY_ABOVE_NORMAL; + case ma_thread_priority_highest: return THREAD_PRIORITY_HIGHEST; + case ma_thread_priority_realtime: return THREAD_PRIORITY_TIME_CRITICAL; + default: return THREAD_PRIORITY_NORMAL; + } +} + +static ma_result ma_thread_create__win32(ma_context* pContext, ma_thread* pThread, ma_thread_entry_proc entryProc, void* pData) +{ + pThread->win32.hThread = CreateThread(NULL, 0, entryProc, pData, 0, NULL); + if (pThread->win32.hThread == NULL) { + return ma_result_from_GetLastError(GetLastError()); + } + + SetThreadPriority((HANDLE)pThread->win32.hThread, ma_thread_priority_to_win32(pContext->threadPriority)); + + return MA_SUCCESS; +} + +static void ma_thread_wait__win32(ma_thread* pThread) +{ + WaitForSingleObject(pThread->win32.hThread, INFINITE); +} + +static void ma_sleep__win32(ma_uint32 milliseconds) +{ + Sleep((DWORD)milliseconds); +} + + +static ma_result ma_mutex_init__win32(ma_context* pContext, ma_mutex* pMutex) +{ + (void)pContext; + + pMutex->win32.hMutex = CreateEventW(NULL, FALSE, TRUE, NULL); + if (pMutex->win32.hMutex == NULL) { + return ma_result_from_GetLastError(GetLastError()); + } + + return MA_SUCCESS; +} + +static void ma_mutex_uninit__win32(ma_mutex* pMutex) +{ + CloseHandle(pMutex->win32.hMutex); +} + +static void ma_mutex_lock__win32(ma_mutex* pMutex) +{ + WaitForSingleObject(pMutex->win32.hMutex, INFINITE); +} + +static void ma_mutex_unlock__win32(ma_mutex* pMutex) +{ + SetEvent(pMutex->win32.hMutex); +} + + +static ma_result ma_event_init__win32(ma_context* pContext, ma_event* pEvent) +{ + (void)pContext; + + pEvent->win32.hEvent = CreateEventW(NULL, FALSE, FALSE, NULL); + if (pEvent->win32.hEvent == NULL) { + return ma_result_from_GetLastError(GetLastError()); + } + + return MA_SUCCESS; +} + +static void ma_event_uninit__win32(ma_event* pEvent) +{ + CloseHandle(pEvent->win32.hEvent); +} + +static ma_bool32 ma_event_wait__win32(ma_event* pEvent) +{ + return WaitForSingleObject(pEvent->win32.hEvent, INFINITE) == WAIT_OBJECT_0; +} + +static ma_bool32 ma_event_signal__win32(ma_event* pEvent) +{ + return SetEvent(pEvent->win32.hEvent); +} + + +static ma_result ma_semaphore_init__win32(ma_context* pContext, int initialValue, ma_semaphore* pSemaphore) +{ + (void)pContext; + + pSemaphore->win32.hSemaphore = CreateSemaphoreW(NULL, (LONG)initialValue, LONG_MAX, NULL); + if (pSemaphore->win32.hSemaphore == NULL) { + return ma_result_from_GetLastError(GetLastError()); + } + + return MA_SUCCESS; +} + +static void ma_semaphore_uninit__win32(ma_semaphore* pSemaphore) +{ + CloseHandle((HANDLE)pSemaphore->win32.hSemaphore); +} + +static ma_bool32 ma_semaphore_wait__win32(ma_semaphore* pSemaphore) +{ + return WaitForSingleObject((HANDLE)pSemaphore->win32.hSemaphore, INFINITE) == WAIT_OBJECT_0; +} + +static ma_bool32 ma_semaphore_release__win32(ma_semaphore* pSemaphore) +{ + return ReleaseSemaphore((HANDLE)pSemaphore->win32.hSemaphore, 1, NULL) != 0; +} +#endif + + +#ifdef MA_POSIX +#include <sched.h> + +typedef int (* ma_pthread_create_proc)(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine) (void *), void *arg); +typedef int (* ma_pthread_join_proc)(pthread_t thread, void **retval); +typedef int (* ma_pthread_mutex_init_proc)(pthread_mutex_t *__mutex, const pthread_mutexattr_t *__mutexattr); +typedef int (* ma_pthread_mutex_destroy_proc)(pthread_mutex_t *__mutex); +typedef int (* ma_pthread_mutex_lock_proc)(pthread_mutex_t *__mutex); +typedef int (* ma_pthread_mutex_unlock_proc)(pthread_mutex_t *__mutex); +typedef int (* ma_pthread_cond_init_proc)(pthread_cond_t *__restrict __cond, const pthread_condattr_t *__restrict __cond_attr); +typedef int (* ma_pthread_cond_destroy_proc)(pthread_cond_t *__cond); +typedef int (* ma_pthread_cond_signal_proc)(pthread_cond_t *__cond); +typedef int (* ma_pthread_cond_wait_proc)(pthread_cond_t *__restrict __cond, pthread_mutex_t *__restrict __mutex); +typedef int (* ma_pthread_attr_init_proc)(pthread_attr_t *attr); +typedef int (* ma_pthread_attr_destroy_proc)(pthread_attr_t *attr); +typedef int (* ma_pthread_attr_setschedpolicy_proc)(pthread_attr_t *attr, int policy); +typedef int (* ma_pthread_attr_getschedparam_proc)(const pthread_attr_t *attr, struct sched_param *param); +typedef int (* ma_pthread_attr_setschedparam_proc)(pthread_attr_t *attr, const struct sched_param *param); + +static ma_result ma_thread_create__posix(ma_context* pContext, ma_thread* pThread, ma_thread_entry_proc entryProc, void* pData) +{ + int result; + pthread_attr_t* pAttr = NULL; + +#if !defined(__EMSCRIPTEN__) + /* Try setting the thread priority. It's not critical if anything fails here. */ + pthread_attr_t attr; + if (((ma_pthread_attr_init_proc)pContext->posix.pthread_attr_init)(&attr) == 0) { + int scheduler = -1; + if (pContext->threadPriority == ma_thread_priority_idle) { +#ifdef SCHED_IDLE + if (((ma_pthread_attr_setschedpolicy_proc)pContext->posix.pthread_attr_setschedpolicy)(&attr, SCHED_IDLE) == 0) { + scheduler = SCHED_IDLE; + } +#endif + } else if (pContext->threadPriority == ma_thread_priority_realtime) { +#ifdef SCHED_FIFO + if (((ma_pthread_attr_setschedpolicy_proc)pContext->posix.pthread_attr_setschedpolicy)(&attr, SCHED_FIFO) == 0) { + scheduler = SCHED_FIFO; + } +#endif +#ifdef MA_LINUX + } else { + scheduler = sched_getscheduler(0); +#endif + } + + if (scheduler != -1) { + int priorityMin = sched_get_priority_min(scheduler); + int priorityMax = sched_get_priority_max(scheduler); + int priorityStep = (priorityMax - priorityMin) / 7; /* 7 = number of priorities supported by miniaudio. */ + + struct sched_param sched; + if (((ma_pthread_attr_getschedparam_proc)pContext->posix.pthread_attr_getschedparam)(&attr, &sched) == 0) { + if (pContext->threadPriority == ma_thread_priority_idle) { + sched.sched_priority = priorityMin; + } else if (pContext->threadPriority == ma_thread_priority_realtime) { + sched.sched_priority = priorityMax; + } else { + sched.sched_priority += ((int)pContext->threadPriority + 5) * priorityStep; /* +5 because the lowest priority is -5. */ + if (sched.sched_priority < priorityMin) { + sched.sched_priority = priorityMin; + } + if (sched.sched_priority > priorityMax) { + sched.sched_priority = priorityMax; + } + } + + if (((ma_pthread_attr_setschedparam_proc)pContext->posix.pthread_attr_setschedparam)(&attr, &sched) == 0) { + pAttr = &attr; + } + } + } + + ((ma_pthread_attr_destroy_proc)pContext->posix.pthread_attr_destroy)(&attr); + } +#endif + + result = ((ma_pthread_create_proc)pContext->posix.pthread_create)(&pThread->posix.thread, pAttr, entryProc, pData); + if (result != 0) { + return ma_result_from_errno(result); + } + + return MA_SUCCESS; +} + +static void ma_thread_wait__posix(ma_thread* pThread) +{ + ((ma_pthread_join_proc)pThread->pContext->posix.pthread_join)(pThread->posix.thread, NULL); +} + +#if !defined(MA_EMSCRIPTEN) +static void ma_sleep__posix(ma_uint32 milliseconds) +{ +#ifdef MA_EMSCRIPTEN + (void)milliseconds; + MA_ASSERT(MA_FALSE); /* The Emscripten build should never sleep. */ +#else + #if _POSIX_C_SOURCE >= 199309L + struct timespec ts; + ts.tv_sec = milliseconds / 1000000; + ts.tv_nsec = milliseconds % 1000000 * 1000000; + nanosleep(&ts, NULL); + #else + struct timeval tv; + tv.tv_sec = milliseconds / 1000; + tv.tv_usec = milliseconds % 1000 * 1000; + select(0, NULL, NULL, NULL, &tv); + #endif +#endif +} +#endif /* MA_EMSCRIPTEN */ + + +static ma_result ma_mutex_init__posix(ma_context* pContext, ma_mutex* pMutex) +{ + int result = ((ma_pthread_mutex_init_proc)pContext->posix.pthread_mutex_init)(&pMutex->posix.mutex, NULL); + if (result != 0) { + return ma_result_from_errno(result); + } + + return MA_SUCCESS; +} + +static void ma_mutex_uninit__posix(ma_mutex* pMutex) +{ + ((ma_pthread_mutex_destroy_proc)pMutex->pContext->posix.pthread_mutex_destroy)(&pMutex->posix.mutex); +} + +static void ma_mutex_lock__posix(ma_mutex* pMutex) +{ + ((ma_pthread_mutex_lock_proc)pMutex->pContext->posix.pthread_mutex_lock)(&pMutex->posix.mutex); +} + +static void ma_mutex_unlock__posix(ma_mutex* pMutex) +{ + ((ma_pthread_mutex_unlock_proc)pMutex->pContext->posix.pthread_mutex_unlock)(&pMutex->posix.mutex); +} + + +static ma_result ma_event_init__posix(ma_context* pContext, ma_event* pEvent) +{ + int result; + + result = ((ma_pthread_mutex_init_proc)pContext->posix.pthread_mutex_init)(&pEvent->posix.mutex, NULL); + if (result != 0) { + return ma_result_from_errno(result); + } + + result = ((ma_pthread_cond_init_proc)pContext->posix.pthread_cond_init)(&pEvent->posix.condition, NULL); + if (result != 0) { + ((ma_pthread_mutex_destroy_proc)pEvent->pContext->posix.pthread_mutex_destroy)(&pEvent->posix.mutex); + return ma_result_from_errno(result); + } + + pEvent->posix.value = 0; + return MA_SUCCESS; +} + +static void ma_event_uninit__posix(ma_event* pEvent) +{ + ((ma_pthread_cond_destroy_proc)pEvent->pContext->posix.pthread_cond_destroy)(&pEvent->posix.condition); + ((ma_pthread_mutex_destroy_proc)pEvent->pContext->posix.pthread_mutex_destroy)(&pEvent->posix.mutex); +} + +static ma_bool32 ma_event_wait__posix(ma_event* pEvent) +{ + ((ma_pthread_mutex_lock_proc)pEvent->pContext->posix.pthread_mutex_lock)(&pEvent->posix.mutex); + { + while (pEvent->posix.value == 0) { + ((ma_pthread_cond_wait_proc)pEvent->pContext->posix.pthread_cond_wait)(&pEvent->posix.condition, &pEvent->posix.mutex); + } + pEvent->posix.value = 0; /* Auto-reset. */ + } + ((ma_pthread_mutex_unlock_proc)pEvent->pContext->posix.pthread_mutex_unlock)(&pEvent->posix.mutex); + + return MA_TRUE; +} + +static ma_bool32 ma_event_signal__posix(ma_event* pEvent) +{ + ((ma_pthread_mutex_lock_proc)pEvent->pContext->posix.pthread_mutex_lock)(&pEvent->posix.mutex); + { + pEvent->posix.value = 1; + ((ma_pthread_cond_signal_proc)pEvent->pContext->posix.pthread_cond_signal)(&pEvent->posix.condition); + } + ((ma_pthread_mutex_unlock_proc)pEvent->pContext->posix.pthread_mutex_unlock)(&pEvent->posix.mutex); + + return MA_TRUE; +} + + +static ma_result ma_semaphore_init__posix(ma_context* pContext, int initialValue, ma_semaphore* pSemaphore) +{ + (void)pContext; + +#if defined(MA_APPLE) + /* Not yet implemented for Apple platforms since sem_init() is deprecated. Need to use a named semaphore via sem_open() instead. */ + (void)initialValue; + (void)pSemaphore; + return MA_INVALID_OPERATION; +#else + if (sem_init(&pSemaphore->posix.semaphore, 0, (unsigned int)initialValue) == 0) { + return ma_result_from_errno(errno); + } +#endif + + return MA_SUCCESS; +} + +static void ma_semaphore_uninit__posix(ma_semaphore* pSemaphore) +{ + sem_close(&pSemaphore->posix.semaphore); +} + +static ma_bool32 ma_semaphore_wait__posix(ma_semaphore* pSemaphore) +{ + return sem_wait(&pSemaphore->posix.semaphore) != -1; +} + +static ma_bool32 ma_semaphore_release__posix(ma_semaphore* pSemaphore) +{ + return sem_post(&pSemaphore->posix.semaphore) != -1; +} +#endif + +static ma_result ma_thread_create(ma_context* pContext, ma_thread* pThread, ma_thread_entry_proc entryProc, void* pData) +{ + if (pContext == NULL || pThread == NULL || entryProc == NULL) { + return MA_FALSE; + } + + pThread->pContext = pContext; + +#ifdef MA_WIN32 + return ma_thread_create__win32(pContext, pThread, entryProc, pData); +#endif +#ifdef MA_POSIX + return ma_thread_create__posix(pContext, pThread, entryProc, pData); +#endif +} + +static void ma_thread_wait(ma_thread* pThread) +{ + if (pThread == NULL) { + return; + } + +#ifdef MA_WIN32 + ma_thread_wait__win32(pThread); +#endif +#ifdef MA_POSIX + ma_thread_wait__posix(pThread); +#endif +} + +#if !defined(MA_EMSCRIPTEN) +static void ma_sleep(ma_uint32 milliseconds) +{ +#ifdef MA_WIN32 + ma_sleep__win32(milliseconds); +#endif +#ifdef MA_POSIX + ma_sleep__posix(milliseconds); +#endif +} +#endif + + +MA_API ma_result ma_mutex_init(ma_context* pContext, ma_mutex* pMutex) +{ + if (pContext == NULL || pMutex == NULL) { + return MA_INVALID_ARGS; + } + + pMutex->pContext = pContext; + +#ifdef MA_WIN32 + return ma_mutex_init__win32(pContext, pMutex); +#endif +#ifdef MA_POSIX + return ma_mutex_init__posix(pContext, pMutex); +#endif +} + +MA_API void ma_mutex_uninit(ma_mutex* pMutex) +{ + if (pMutex == NULL || pMutex->pContext == NULL) { + return; + } + +#ifdef MA_WIN32 + ma_mutex_uninit__win32(pMutex); +#endif +#ifdef MA_POSIX + ma_mutex_uninit__posix(pMutex); +#endif +} + +MA_API void ma_mutex_lock(ma_mutex* pMutex) +{ + if (pMutex == NULL || pMutex->pContext == NULL) { + return; + } + +#ifdef MA_WIN32 + ma_mutex_lock__win32(pMutex); +#endif +#ifdef MA_POSIX + ma_mutex_lock__posix(pMutex); +#endif +} + +MA_API void ma_mutex_unlock(ma_mutex* pMutex) +{ + if (pMutex == NULL || pMutex->pContext == NULL) { + return; +} + +#ifdef MA_WIN32 + ma_mutex_unlock__win32(pMutex); +#endif +#ifdef MA_POSIX + ma_mutex_unlock__posix(pMutex); +#endif +} + + +MA_API ma_result ma_event_init(ma_context* pContext, ma_event* pEvent) +{ + if (pContext == NULL || pEvent == NULL) { + return MA_FALSE; + } + + pEvent->pContext = pContext; + +#ifdef MA_WIN32 + return ma_event_init__win32(pContext, pEvent); +#endif +#ifdef MA_POSIX + return ma_event_init__posix(pContext, pEvent); +#endif +} + +MA_API void ma_event_uninit(ma_event* pEvent) +{ + if (pEvent == NULL || pEvent->pContext == NULL) { + return; + } + +#ifdef MA_WIN32 + ma_event_uninit__win32(pEvent); +#endif +#ifdef MA_POSIX + ma_event_uninit__posix(pEvent); +#endif +} + +MA_API ma_bool32 ma_event_wait(ma_event* pEvent) +{ + if (pEvent == NULL || pEvent->pContext == NULL) { + return MA_FALSE; + } + +#ifdef MA_WIN32 + return ma_event_wait__win32(pEvent); +#endif +#ifdef MA_POSIX + return ma_event_wait__posix(pEvent); +#endif +} + +MA_API ma_bool32 ma_event_signal(ma_event* pEvent) +{ + if (pEvent == NULL || pEvent->pContext == NULL) { + return MA_FALSE; + } + +#ifdef MA_WIN32 + return ma_event_signal__win32(pEvent); +#endif +#ifdef MA_POSIX + return ma_event_signal__posix(pEvent); +#endif +} + + +MA_API ma_result ma_semaphore_init(ma_context* pContext, int initialValue, ma_semaphore* pSemaphore) +{ + if (pContext == NULL || pSemaphore == NULL) { + return MA_INVALID_ARGS; + } + +#ifdef MA_WIN32 + return ma_semaphore_init__win32(pContext, initialValue, pSemaphore); +#endif +#ifdef MA_POSIX + return ma_semaphore_init__posix(pContext, initialValue, pSemaphore); +#endif +} + +MA_API void ma_semaphore_uninit(ma_semaphore* pSemaphore) +{ + if (pSemaphore == NULL) { + return; + } + +#ifdef MA_WIN32 + ma_semaphore_uninit__win32(pSemaphore); +#endif +#ifdef MA_POSIX + ma_semaphore_uninit__posix(pSemaphore); +#endif +} + +MA_API ma_bool32 ma_semaphore_wait(ma_semaphore* pSemaphore) +{ + if (pSemaphore == NULL) { + return MA_FALSE; + } + +#ifdef MA_WIN32 + return ma_semaphore_wait__win32(pSemaphore); +#endif +#ifdef MA_POSIX + return ma_semaphore_wait__posix(pSemaphore); +#endif +} + +MA_API ma_bool32 ma_semaphore_release(ma_semaphore* pSemaphore) +{ + if (pSemaphore == NULL) { + return MA_FALSE; + } + +#ifdef MA_WIN32 + return ma_semaphore_release__win32(pSemaphore); +#endif +#ifdef MA_POSIX + return ma_semaphore_release__posix(pSemaphore); +#endif +} + + +#if 0 +static ma_uint32 ma_get_closest_standard_sample_rate(ma_uint32 sampleRateIn) +{ + ma_uint32 closestRate = 0; + ma_uint32 closestDiff = 0xFFFFFFFF; + size_t iStandardRate; + + for (iStandardRate = 0; iStandardRate < ma_countof(g_maStandardSampleRatePriorities); ++iStandardRate) { + ma_uint32 standardRate = g_maStandardSampleRatePriorities[iStandardRate]; + ma_uint32 diff; + + if (sampleRateIn > standardRate) { + diff = sampleRateIn - standardRate; + } else { + diff = standardRate - sampleRateIn; + } + + if (diff == 0) { + return standardRate; /* The input sample rate is a standard rate. */ + } + + if (closestDiff > diff) { + closestDiff = diff; + closestRate = standardRate; + } + } + + return closestRate; +} +#endif + +MA_API ma_uint32 ma_scale_buffer_size(ma_uint32 baseBufferSize, float scale) +{ + return ma_max(1, (ma_uint32)(baseBufferSize*scale)); +} + +MA_API ma_uint32 ma_calculate_buffer_size_in_milliseconds_from_frames(ma_uint32 bufferSizeInFrames, ma_uint32 sampleRate) +{ + return bufferSizeInFrames / (sampleRate/1000); +} + +MA_API ma_uint32 ma_calculate_buffer_size_in_frames_from_milliseconds(ma_uint32 bufferSizeInMilliseconds, ma_uint32 sampleRate) +{ + return bufferSizeInMilliseconds * (sampleRate/1000); +} + +MA_API void ma_zero_pcm_frames(void* p, ma_uint32 frameCount, ma_format format, ma_uint32 channels) +{ + MA_ZERO_MEMORY(p, frameCount * ma_get_bytes_per_frame(format, channels)); +} + +MA_API void ma_clip_samples_f32(float* p, ma_uint32 sampleCount) +{ + ma_uint32 iSample; + + /* TODO: Research a branchless SSE implementation. */ + for (iSample = 0; iSample < sampleCount; iSample += 1) { + p[iSample] = ma_clip_f32(p[iSample]); + } +} + + +MA_API void ma_copy_and_apply_volume_factor_u8(ma_uint8* pSamplesOut, const ma_uint8* pSamplesIn, ma_uint32 sampleCount, float factor) +{ + ma_uint32 iSample; + + if (pSamplesOut == NULL || pSamplesIn == NULL) { + return; + } + + for (iSample = 0; iSample < sampleCount; iSample += 1) { + pSamplesOut[iSample] = (ma_uint8)(pSamplesIn[iSample] * factor); + } +} + +MA_API void ma_copy_and_apply_volume_factor_s16(ma_int16* pSamplesOut, const ma_int16* pSamplesIn, ma_uint32 sampleCount, float factor) +{ + ma_uint32 iSample; + + if (pSamplesOut == NULL || pSamplesIn == NULL) { + return; + } + + for (iSample = 0; iSample < sampleCount; iSample += 1) { + pSamplesOut[iSample] = (ma_int16)(pSamplesIn[iSample] * factor); + } +} + +MA_API void ma_copy_and_apply_volume_factor_s24(void* pSamplesOut, const void* pSamplesIn, ma_uint32 sampleCount, float factor) +{ + ma_uint32 iSample; + ma_uint8* pSamplesOut8; + ma_uint8* pSamplesIn8; + + if (pSamplesOut == NULL || pSamplesIn == NULL) { + return; + } + + pSamplesOut8 = (ma_uint8*)pSamplesOut; + pSamplesIn8 = (ma_uint8*)pSamplesIn; + + for (iSample = 0; iSample < sampleCount; iSample += 1) { + ma_int32 sampleS32; + + sampleS32 = (ma_int32)(((ma_uint32)(pSamplesIn8[iSample*3+0]) << 8) | ((ma_uint32)(pSamplesIn8[iSample*3+1]) << 16) | ((ma_uint32)(pSamplesIn8[iSample*3+2])) << 24); + sampleS32 = (ma_int32)(sampleS32 * factor); + + pSamplesOut8[iSample*3+0] = (ma_uint8)(((ma_uint32)sampleS32 & 0x0000FF00) >> 8); + pSamplesOut8[iSample*3+1] = (ma_uint8)(((ma_uint32)sampleS32 & 0x00FF0000) >> 16); + pSamplesOut8[iSample*3+2] = (ma_uint8)(((ma_uint32)sampleS32 & 0xFF000000) >> 24); + } +} + +MA_API void ma_copy_and_apply_volume_factor_s32(ma_int32* pSamplesOut, const ma_int32* pSamplesIn, ma_uint32 sampleCount, float factor) +{ + ma_uint32 iSample; + + if (pSamplesOut == NULL || pSamplesIn == NULL) { + return; + } + + for (iSample = 0; iSample < sampleCount; iSample += 1) { + pSamplesOut[iSample] = (ma_int32)(pSamplesIn[iSample] * factor); + } +} + +MA_API void ma_copy_and_apply_volume_factor_f32(float* pSamplesOut, const float* pSamplesIn, ma_uint32 sampleCount, float factor) +{ + ma_uint32 iSample; + + if (pSamplesOut == NULL || pSamplesIn == NULL) { + return; + } + + for (iSample = 0; iSample < sampleCount; iSample += 1) { + pSamplesOut[iSample] = pSamplesIn[iSample] * factor; + } +} + +MA_API void ma_apply_volume_factor_u8(ma_uint8* pSamples, ma_uint32 sampleCount, float factor) +{ + ma_copy_and_apply_volume_factor_u8(pSamples, pSamples, sampleCount, factor); +} + +MA_API void ma_apply_volume_factor_s16(ma_int16* pSamples, ma_uint32 sampleCount, float factor) +{ + ma_copy_and_apply_volume_factor_s16(pSamples, pSamples, sampleCount, factor); +} + +MA_API void ma_apply_volume_factor_s24(void* pSamples, ma_uint32 sampleCount, float factor) +{ + ma_copy_and_apply_volume_factor_s24(pSamples, pSamples, sampleCount, factor); +} + +MA_API void ma_apply_volume_factor_s32(ma_int32* pSamples, ma_uint32 sampleCount, float factor) +{ + ma_copy_and_apply_volume_factor_s32(pSamples, pSamples, sampleCount, factor); +} + +MA_API void ma_apply_volume_factor_f32(float* pSamples, ma_uint32 sampleCount, float factor) +{ + ma_copy_and_apply_volume_factor_f32(pSamples, pSamples, sampleCount, factor); +} + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_u8(ma_uint8* pPCMFramesOut, const ma_uint8* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_u8(pPCMFramesOut, pPCMFramesIn, frameCount*channels, factor); +} + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s16(ma_int16* pPCMFramesOut, const ma_int16* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_s16(pPCMFramesOut, pPCMFramesIn, frameCount*channels, factor); +} + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s24(void* pPCMFramesOut, const void* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_s24(pPCMFramesOut, pPCMFramesIn, frameCount*channels, factor); +} + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s32(ma_int32* pPCMFramesOut, const ma_int32* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_s32(pPCMFramesOut, pPCMFramesIn, frameCount*channels, factor); +} + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames_f32(float* pPCMFramesOut, const float* pPCMFramesIn, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_f32(pPCMFramesOut, pPCMFramesIn, frameCount*channels, factor); +} + +MA_API void ma_copy_and_apply_volume_factor_pcm_frames(void* pPCMFramesOut, const void* pPCMFramesIn, ma_uint32 frameCount, ma_format format, ma_uint32 channels, float factor) +{ + switch (format) + { + case ma_format_u8: ma_copy_and_apply_volume_factor_pcm_frames_u8 ((ma_uint8*)pPCMFramesOut, (const ma_uint8*)pPCMFramesIn, frameCount, channels, factor); return; + case ma_format_s16: ma_copy_and_apply_volume_factor_pcm_frames_s16((ma_int16*)pPCMFramesOut, (const ma_int16*)pPCMFramesIn, frameCount, channels, factor); return; + case ma_format_s24: ma_copy_and_apply_volume_factor_pcm_frames_s24( pPCMFramesOut, pPCMFramesIn, frameCount, channels, factor); return; + case ma_format_s32: ma_copy_and_apply_volume_factor_pcm_frames_s32((ma_int32*)pPCMFramesOut, (const ma_int32*)pPCMFramesIn, frameCount, channels, factor); return; + case ma_format_f32: ma_copy_and_apply_volume_factor_pcm_frames_f32( (float*)pPCMFramesOut, (const float*)pPCMFramesIn, frameCount, channels, factor); return; + default: return; /* Do nothing. */ + } +} + +MA_API void ma_apply_volume_factor_pcm_frames_u8(ma_uint8* pPCMFrames, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_pcm_frames_u8(pPCMFrames, pPCMFrames, frameCount, channels, factor); +} + +MA_API void ma_apply_volume_factor_pcm_frames_s16(ma_int16* pPCMFrames, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_pcm_frames_s16(pPCMFrames, pPCMFrames, frameCount, channels, factor); +} + +MA_API void ma_apply_volume_factor_pcm_frames_s24(void* pPCMFrames, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_pcm_frames_s24(pPCMFrames, pPCMFrames, frameCount, channels, factor); +} + +MA_API void ma_apply_volume_factor_pcm_frames_s32(ma_int32* pPCMFrames, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_pcm_frames_s32(pPCMFrames, pPCMFrames, frameCount, channels, factor); +} + +MA_API void ma_apply_volume_factor_pcm_frames_f32(float* pPCMFrames, ma_uint32 frameCount, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_pcm_frames_f32(pPCMFrames, pPCMFrames, frameCount, channels, factor); +} + +MA_API void ma_apply_volume_factor_pcm_frames(void* pPCMFrames, ma_uint32 frameCount, ma_format format, ma_uint32 channels, float factor) +{ + ma_copy_and_apply_volume_factor_pcm_frames(pPCMFrames, pPCMFrames, frameCount, format, channels, factor); +} + + +MA_API float ma_factor_to_gain_db(float factor) +{ + return (float)(20*ma_log10f(factor)); +} + +MA_API float ma_gain_db_to_factor(float gain) +{ + return (float)ma_powf(10, gain/20.0f); +} + + +static void ma_device__on_data(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount) +{ + float masterVolumeFactor; + + masterVolumeFactor = pDevice->masterVolumeFactor; + + if (pDevice->onData) { + if (!pDevice->noPreZeroedOutputBuffer && pFramesOut != NULL) { + ma_zero_pcm_frames(pFramesOut, frameCount, pDevice->playback.format, pDevice->playback.channels); + } + + /* Volume control of input makes things a bit awkward because the input buffer is read-only. We'll need to use a temp buffer and loop in this case. */ + if (pFramesIn != NULL && masterVolumeFactor < 1) { + ma_uint8 tempFramesIn[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint32 bpfCapture = ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels); + ma_uint32 bpfPlayback = ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels); + ma_uint32 totalFramesProcessed = 0; + while (totalFramesProcessed < frameCount) { + ma_uint32 framesToProcessThisIteration = frameCount - totalFramesProcessed; + if (framesToProcessThisIteration > sizeof(tempFramesIn)/bpfCapture) { + framesToProcessThisIteration = sizeof(tempFramesIn)/bpfCapture; + } + + ma_copy_and_apply_volume_factor_pcm_frames(tempFramesIn, ma_offset_ptr(pFramesIn, totalFramesProcessed*bpfCapture), framesToProcessThisIteration, pDevice->capture.format, pDevice->capture.channels, masterVolumeFactor); + + pDevice->onData(pDevice, ma_offset_ptr(pFramesOut, totalFramesProcessed*bpfPlayback), tempFramesIn, framesToProcessThisIteration); + + totalFramesProcessed += framesToProcessThisIteration; + } + } else { + pDevice->onData(pDevice, pFramesOut, pFramesIn, frameCount); + } + + /* Volume control and clipping for playback devices. */ + if (pFramesOut != NULL) { + if (masterVolumeFactor < 1) { + if (pFramesIn == NULL) { /* <-- In full-duplex situations, the volume will have been applied to the input samples before the data callback. Applying it again post-callback will incorrectly compound it. */ + ma_apply_volume_factor_pcm_frames(pFramesOut, frameCount, pDevice->playback.format, pDevice->playback.channels, masterVolumeFactor); + } + } + + if (!pDevice->noClip && pDevice->playback.format == ma_format_f32) { + ma_clip_pcm_frames_f32((float*)pFramesOut, frameCount, pDevice->playback.channels); + } + } + } +} + + + +/* A helper function for reading sample data from the client. */ +static void ma_device__read_frames_from_client(ma_device* pDevice, ma_uint32 frameCount, void* pFramesOut) +{ + MA_ASSERT(pDevice != NULL); + MA_ASSERT(frameCount > 0); + MA_ASSERT(pFramesOut != NULL); + + if (pDevice->playback.converter.isPassthrough) { + ma_device__on_data(pDevice, pFramesOut, NULL, frameCount); + } else { + ma_result result; + ma_uint64 totalFramesReadOut; + ma_uint64 totalFramesReadIn; + void* pRunningFramesOut; + + totalFramesReadOut = 0; + totalFramesReadIn = 0; + pRunningFramesOut = pFramesOut; + + while (totalFramesReadOut < frameCount) { + ma_uint8 pIntermediaryBuffer[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; /* In client format. */ + ma_uint64 intermediaryBufferCap = sizeof(pIntermediaryBuffer) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels); + ma_uint64 framesToReadThisIterationIn; + ma_uint64 framesReadThisIterationIn; + ma_uint64 framesToReadThisIterationOut; + ma_uint64 framesReadThisIterationOut; + ma_uint64 requiredInputFrameCount; + + framesToReadThisIterationOut = (frameCount - totalFramesReadOut); + framesToReadThisIterationIn = framesToReadThisIterationOut; + if (framesToReadThisIterationIn > intermediaryBufferCap) { + framesToReadThisIterationIn = intermediaryBufferCap; + } + + requiredInputFrameCount = ma_data_converter_get_required_input_frame_count(&pDevice->playback.converter, framesToReadThisIterationOut); + if (framesToReadThisIterationIn > requiredInputFrameCount) { + framesToReadThisIterationIn = requiredInputFrameCount; + } + + if (framesToReadThisIterationIn > 0) { + ma_device__on_data(pDevice, pIntermediaryBuffer, NULL, (ma_uint32)framesToReadThisIterationIn); + totalFramesReadIn += framesToReadThisIterationIn; + } + + /* + At this point we have our decoded data in input format and now we need to convert to output format. Note that even if we didn't read any + input frames, we still want to try processing frames because there may some output frames generated from cached input data. + */ + framesReadThisIterationIn = framesToReadThisIterationIn; + framesReadThisIterationOut = framesToReadThisIterationOut; + result = ma_data_converter_process_pcm_frames(&pDevice->playback.converter, pIntermediaryBuffer, &framesReadThisIterationIn, pRunningFramesOut, &framesReadThisIterationOut); + if (result != MA_SUCCESS) { + break; + } + + totalFramesReadOut += framesReadThisIterationOut; + pRunningFramesOut = ma_offset_ptr(pRunningFramesOut, framesReadThisIterationOut * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels)); + + if (framesReadThisIterationIn == 0 && framesReadThisIterationOut == 0) { + break; /* We're done. */ + } + } + } +} + +/* A helper for sending sample data to the client. */ +static void ma_device__send_frames_to_client(ma_device* pDevice, ma_uint32 frameCountInDeviceFormat, const void* pFramesInDeviceFormat) +{ + MA_ASSERT(pDevice != NULL); + MA_ASSERT(frameCountInDeviceFormat > 0); + MA_ASSERT(pFramesInDeviceFormat != NULL); + + if (pDevice->capture.converter.isPassthrough) { + ma_device__on_data(pDevice, NULL, pFramesInDeviceFormat, frameCountInDeviceFormat); + } else { + ma_result result; + ma_uint8 pFramesInClientFormat[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint64 framesInClientFormatCap = sizeof(pFramesInClientFormat) / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels); + ma_uint64 totalDeviceFramesProcessed = 0; + ma_uint64 totalClientFramesProcessed = 0; + const void* pRunningFramesInDeviceFormat = pFramesInDeviceFormat; + + /* We just keep going until we've exhaused all of our input frames and cannot generate any more output frames. */ + for (;;) { + ma_uint64 deviceFramesProcessedThisIteration; + ma_uint64 clientFramesProcessedThisIteration; + + deviceFramesProcessedThisIteration = (frameCountInDeviceFormat - totalDeviceFramesProcessed); + clientFramesProcessedThisIteration = framesInClientFormatCap; + + result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningFramesInDeviceFormat, &deviceFramesProcessedThisIteration, pFramesInClientFormat, &clientFramesProcessedThisIteration); + if (result != MA_SUCCESS) { + break; + } + + if (clientFramesProcessedThisIteration > 0) { + ma_device__on_data(pDevice, NULL, pFramesInClientFormat, (ma_uint32)clientFramesProcessedThisIteration); /* Safe cast. */ + } + + pRunningFramesInDeviceFormat = ma_offset_ptr(pRunningFramesInDeviceFormat, deviceFramesProcessedThisIteration * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels)); + totalDeviceFramesProcessed += deviceFramesProcessedThisIteration; + totalClientFramesProcessed += clientFramesProcessedThisIteration; + + if (deviceFramesProcessedThisIteration == 0 && clientFramesProcessedThisIteration == 0) { + break; /* We're done. */ + } + } + } +} + + +/* We only want to expose ma_device__handle_duplex_callback_capture() and ma_device__handle_duplex_callback_playback() if we have an asynchronous backend enabled. */ +#if defined(MA_HAS_JACK) || \ + defined(MA_HAS_COREAUDIO) || \ + defined(MA_HAS_AAUDIO) || \ + defined(MA_HAS_OPENSL) || \ + defined(MA_HAS_WEBAUDIO) +static ma_result ma_device__handle_duplex_callback_capture(ma_device* pDevice, ma_uint32 frameCountInDeviceFormat, const void* pFramesInDeviceFormat, ma_pcm_rb* pRB) +{ + ma_result result; + ma_uint32 totalDeviceFramesProcessed = 0; + const void* pRunningFramesInDeviceFormat = pFramesInDeviceFormat; + + MA_ASSERT(pDevice != NULL); + MA_ASSERT(frameCountInDeviceFormat > 0); + MA_ASSERT(pFramesInDeviceFormat != NULL); + MA_ASSERT(pRB != NULL); + + /* Write to the ring buffer. The ring buffer is in the client format which means we need to convert. */ + for (;;) { + ma_uint32 framesToProcessInDeviceFormat = (frameCountInDeviceFormat - totalDeviceFramesProcessed); + ma_uint32 framesToProcessInClientFormat = MA_DATA_CONVERTER_STACK_BUFFER_SIZE / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels); + ma_uint64 framesProcessedInDeviceFormat; + ma_uint64 framesProcessedInClientFormat; + void* pFramesInClientFormat; + + result = ma_pcm_rb_acquire_write(pRB, &framesToProcessInClientFormat, &pFramesInClientFormat); + if (result != MA_SUCCESS) { + ma_post_error(pDevice, MA_LOG_LEVEL_ERROR, "Failed to acquire capture PCM frames from ring buffer.", result); + break; + } + + if (framesToProcessInClientFormat == 0) { + if (ma_pcm_rb_pointer_distance(pRB) == (ma_int32)ma_pcm_rb_get_subbuffer_size(pRB)) { + break; /* Overrun. Not enough room in the ring buffer for input frame. Excess frames are dropped. */ + } + } + + /* Convert. */ + framesProcessedInDeviceFormat = framesToProcessInDeviceFormat; + framesProcessedInClientFormat = framesToProcessInClientFormat; + result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningFramesInDeviceFormat, &framesProcessedInDeviceFormat, pFramesInClientFormat, &framesProcessedInClientFormat); + if (result != MA_SUCCESS) { + break; + } + + result = ma_pcm_rb_commit_write(pRB, (ma_uint32)framesProcessedInDeviceFormat, pFramesInClientFormat); /* Safe cast. */ + if (result != MA_SUCCESS) { + ma_post_error(pDevice, MA_LOG_LEVEL_ERROR, "Failed to commit capture PCM frames to ring buffer.", result); + break; + } + + pRunningFramesInDeviceFormat = ma_offset_ptr(pRunningFramesInDeviceFormat, framesProcessedInDeviceFormat * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels)); + totalDeviceFramesProcessed += (ma_uint32)framesProcessedInDeviceFormat; /* Safe cast. */ + + /* We're done when we're unable to process any client nor device frames. */ + if (framesProcessedInClientFormat == 0 && framesProcessedInDeviceFormat == 0) { + break; /* Done. */ + } + } + + return MA_SUCCESS; +} + +static ma_result ma_device__handle_duplex_callback_playback(ma_device* pDevice, ma_uint32 frameCount, void* pFramesInInternalFormat, ma_pcm_rb* pRB) +{ + ma_result result; + ma_uint8 playbackFramesInExternalFormat[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint8 silentInputFrames[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint32 totalFramesToReadFromClient; + ma_uint32 totalFramesReadFromClient; + ma_uint32 totalFramesReadOut = 0; + + MA_ASSERT(pDevice != NULL); + MA_ASSERT(frameCount > 0); + MA_ASSERT(pFramesInInternalFormat != NULL); + MA_ASSERT(pRB != NULL); + + /* + Sitting in the ring buffer should be captured data from the capture callback in external format. If there's not enough data in there for + the whole frameCount frames we just use silence instead for the input data. + */ + MA_ZERO_MEMORY(silentInputFrames, sizeof(silentInputFrames)); + + /* We need to calculate how many output frames are required to be read from the client to completely fill frameCount internal frames. */ + totalFramesToReadFromClient = (ma_uint32)ma_data_converter_get_required_input_frame_count(&pDevice->playback.converter, frameCount); + totalFramesReadFromClient = 0; + while (totalFramesReadFromClient < totalFramesToReadFromClient && ma_device_is_started(pDevice)) { + ma_uint32 framesRemainingFromClient; + ma_uint32 framesToProcessFromClient; + ma_uint32 inputFrameCount; + void* pInputFrames; + + framesRemainingFromClient = (totalFramesToReadFromClient - totalFramesReadFromClient); + framesToProcessFromClient = sizeof(playbackFramesInExternalFormat) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels); + if (framesToProcessFromClient > framesRemainingFromClient) { + framesToProcessFromClient = framesRemainingFromClient; + } + + /* We need to grab captured samples before firing the callback. If there's not enough input samples we just pass silence. */ + inputFrameCount = framesToProcessFromClient; + result = ma_pcm_rb_acquire_read(pRB, &inputFrameCount, &pInputFrames); + if (result == MA_SUCCESS) { + if (inputFrameCount > 0) { + /* Use actual input frames. */ + ma_device__on_data(pDevice, playbackFramesInExternalFormat, pInputFrames, inputFrameCount); + } else { + if (ma_pcm_rb_pointer_distance(pRB) == 0) { + break; /* Underrun. */ + } + } + + /* We're done with the captured samples. */ + result = ma_pcm_rb_commit_read(pRB, inputFrameCount, pInputFrames); + if (result != MA_SUCCESS) { + break; /* Don't know what to do here... Just abandon ship. */ + } + } else { + /* Use silent input frames. */ + inputFrameCount = ma_min( + sizeof(playbackFramesInExternalFormat) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels), + sizeof(silentInputFrames) / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels) + ); + + ma_device__on_data(pDevice, playbackFramesInExternalFormat, silentInputFrames, inputFrameCount); + } + + /* We have samples in external format so now we need to convert to internal format and output to the device. */ + { + ma_uint64 framesConvertedIn = inputFrameCount; + ma_uint64 framesConvertedOut = (frameCount - totalFramesReadOut); + ma_data_converter_process_pcm_frames(&pDevice->playback.converter, playbackFramesInExternalFormat, &framesConvertedIn, pFramesInInternalFormat, &framesConvertedOut); + + totalFramesReadFromClient += (ma_uint32)framesConvertedIn; /* Safe cast. */ + totalFramesReadOut += (ma_uint32)framesConvertedOut; /* Safe cast. */ + pFramesInInternalFormat = ma_offset_ptr(pFramesInInternalFormat, framesConvertedOut * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels)); + } + } + + return MA_SUCCESS; +} +#endif /* Asynchronous backends. */ + +/* A helper for changing the state of the device. */ +static MA_INLINE void ma_device__set_state(ma_device* pDevice, ma_uint32 newState) +{ + ma_atomic_exchange_32(&pDevice->state, newState); +} + +/* A helper for getting the state of the device. */ +static MA_INLINE ma_uint32 ma_device__get_state(ma_device* pDevice) +{ + return pDevice->state; +} + + +#ifdef MA_WIN32 + GUID MA_GUID_KSDATAFORMAT_SUBTYPE_PCM = {0x00000001, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}; + GUID MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}; + /*GUID MA_GUID_KSDATAFORMAT_SUBTYPE_ALAW = {0x00000006, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};*/ + /*GUID MA_GUID_KSDATAFORMAT_SUBTYPE_MULAW = {0x00000007, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};*/ +#endif + + +typedef struct +{ + ma_device_type deviceType; + const ma_device_id* pDeviceID; + char* pName; + size_t nameBufferSize; + ma_bool32 foundDevice; +} ma_context__try_get_device_name_by_id__enum_callback_data; + +static ma_bool32 ma_context__try_get_device_name_by_id__enum_callback(ma_context* pContext, ma_device_type deviceType, const ma_device_info* pDeviceInfo, void* pUserData) +{ + ma_context__try_get_device_name_by_id__enum_callback_data* pData = (ma_context__try_get_device_name_by_id__enum_callback_data*)pUserData; + MA_ASSERT(pData != NULL); + + if (pData->deviceType == deviceType) { + if (pContext->onDeviceIDEqual(pContext, pData->pDeviceID, &pDeviceInfo->id)) { + ma_strncpy_s(pData->pName, pData->nameBufferSize, pDeviceInfo->name, (size_t)-1); + pData->foundDevice = MA_TRUE; + } + } + + return !pData->foundDevice; +} + +/* +Generic function for retrieving the name of a device by it's ID. + +This function simply enumerates every device and then retrieves the name of the first device that has the same ID. +*/ +static ma_result ma_context__try_get_device_name_by_id(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, char* pName, size_t nameBufferSize) +{ + ma_result result; + ma_context__try_get_device_name_by_id__enum_callback_data data; + + MA_ASSERT(pContext != NULL); + MA_ASSERT(pName != NULL); + + if (pDeviceID == NULL) { + return MA_NO_DEVICE; + } + + data.deviceType = deviceType; + data.pDeviceID = pDeviceID; + data.pName = pName; + data.nameBufferSize = nameBufferSize; + data.foundDevice = MA_FALSE; + result = ma_context_enumerate_devices(pContext, ma_context__try_get_device_name_by_id__enum_callback, &data); + if (result != MA_SUCCESS) { + return result; + } + + if (!data.foundDevice) { + return MA_NO_DEVICE; + } else { + return MA_SUCCESS; + } +} + + +MA_API ma_uint32 ma_get_format_priority_index(ma_format format) /* Lower = better. */ +{ + ma_uint32 i; + for (i = 0; i < ma_countof(g_maFormatPriorities); ++i) { + if (g_maFormatPriorities[i] == format) { + return i; + } + } + + /* Getting here means the format could not be found or is equal to ma_format_unknown. */ + return (ma_uint32)-1; +} + +static ma_result ma_device__post_init_setup(ma_device* pDevice, ma_device_type deviceType); + + +/******************************************************************************* + +Null Backend + +*******************************************************************************/ +#ifdef MA_HAS_NULL + +#define MA_DEVICE_OP_NONE__NULL 0 +#define MA_DEVICE_OP_START__NULL 1 +#define MA_DEVICE_OP_SUSPEND__NULL 2 +#define MA_DEVICE_OP_KILL__NULL 3 + +static ma_thread_result MA_THREADCALL ma_device_thread__null(void* pData) +{ + ma_device* pDevice = (ma_device*)pData; + MA_ASSERT(pDevice != NULL); + + for (;;) { /* Keep the thread alive until the device is uninitialized. */ + /* Wait for an operation to be requested. */ + ma_event_wait(&pDevice->null_device.operationEvent); + + /* At this point an event should have been triggered. */ + + /* Starting the device needs to put the thread into a loop. */ + if (pDevice->null_device.operation == MA_DEVICE_OP_START__NULL) { + ma_atomic_exchange_32(&pDevice->null_device.operation, MA_DEVICE_OP_NONE__NULL); + + /* Reset the timer just in case. */ + ma_timer_init(&pDevice->null_device.timer); + + /* Keep looping until an operation has been requested. */ + while (pDevice->null_device.operation != MA_DEVICE_OP_NONE__NULL && pDevice->null_device.operation != MA_DEVICE_OP_START__NULL) { + ma_sleep(10); /* Don't hog the CPU. */ + } + + /* Getting here means a suspend or kill operation has been requested. */ + ma_atomic_exchange_32(&pDevice->null_device.operationResult, MA_SUCCESS); + ma_event_signal(&pDevice->null_device.operationCompletionEvent); + continue; + } + + /* Suspending the device means we need to stop the timer and just continue the loop. */ + if (pDevice->null_device.operation == MA_DEVICE_OP_SUSPEND__NULL) { + ma_atomic_exchange_32(&pDevice->null_device.operation, MA_DEVICE_OP_NONE__NULL); + + /* We need to add the current run time to the prior run time, then reset the timer. */ + pDevice->null_device.priorRunTime += ma_timer_get_time_in_seconds(&pDevice->null_device.timer); + ma_timer_init(&pDevice->null_device.timer); + + /* We're done. */ + ma_atomic_exchange_32(&pDevice->null_device.operationResult, MA_SUCCESS); + ma_event_signal(&pDevice->null_device.operationCompletionEvent); + continue; + } + + /* Killing the device means we need to get out of this loop so that this thread can terminate. */ + if (pDevice->null_device.operation == MA_DEVICE_OP_KILL__NULL) { + ma_atomic_exchange_32(&pDevice->null_device.operation, MA_DEVICE_OP_NONE__NULL); + ma_atomic_exchange_32(&pDevice->null_device.operationResult, MA_SUCCESS); + ma_event_signal(&pDevice->null_device.operationCompletionEvent); + break; + } + + /* Getting a signal on a "none" operation probably means an error. Return invalid operation. */ + if (pDevice->null_device.operation == MA_DEVICE_OP_NONE__NULL) { + MA_ASSERT(MA_FALSE); /* <-- Trigger this in debug mode to ensure developers are aware they're doing something wrong (or there's a bug in a miniaudio). */ + ma_atomic_exchange_32(&pDevice->null_device.operationResult, MA_INVALID_OPERATION); + ma_event_signal(&pDevice->null_device.operationCompletionEvent); + continue; /* Continue the loop. Don't terminate. */ + } + } + + return (ma_thread_result)0; +} + +static ma_result ma_device_do_operation__null(ma_device* pDevice, ma_uint32 operation) +{ + ma_atomic_exchange_32(&pDevice->null_device.operation, operation); + if (!ma_event_signal(&pDevice->null_device.operationEvent)) { + return MA_ERROR; + } + + if (!ma_event_wait(&pDevice->null_device.operationCompletionEvent)) { + return MA_ERROR; + } + + return pDevice->null_device.operationResult; +} + +static ma_uint64 ma_device_get_total_run_time_in_frames__null(ma_device* pDevice) +{ + ma_uint32 internalSampleRate; + if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) { + internalSampleRate = pDevice->capture.internalSampleRate; + } else { + internalSampleRate = pDevice->playback.internalSampleRate; + } + + + return (ma_uint64)((pDevice->null_device.priorRunTime + ma_timer_get_time_in_seconds(&pDevice->null_device.timer)) * internalSampleRate); +} + +static ma_bool32 ma_context_is_device_id_equal__null(ma_context* pContext, const ma_device_id* pID0, const ma_device_id* pID1) +{ + MA_ASSERT(pContext != NULL); + MA_ASSERT(pID0 != NULL); + MA_ASSERT(pID1 != NULL); + (void)pContext; + + return pID0->nullbackend == pID1->nullbackend; +} + +static ma_result ma_context_enumerate_devices__null(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData) +{ + ma_bool32 cbResult = MA_TRUE; + + MA_ASSERT(pContext != NULL); + MA_ASSERT(callback != NULL); + + /* Playback. */ + if (cbResult) { + ma_device_info deviceInfo; + MA_ZERO_OBJECT(&deviceInfo); + ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Playback Device", (size_t)-1); + cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData); + } + + /* Capture. */ + if (cbResult) { + ma_device_info deviceInfo; + MA_ZERO_OBJECT(&deviceInfo); + ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Capture Device", (size_t)-1); + cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData); + } + + return MA_SUCCESS; +} + +static ma_result ma_context_get_device_info__null(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_share_mode shareMode, ma_device_info* pDeviceInfo) +{ + ma_uint32 iFormat; + + MA_ASSERT(pContext != NULL); + + if (pDeviceID != NULL && pDeviceID->nullbackend != 0) { + return MA_NO_DEVICE; /* Don't know the device. */ + } + + /* Name / Description */ + if (deviceType == ma_device_type_playback) { + ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), "NULL Playback Device", (size_t)-1); + } else { + ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), "NULL Capture Device", (size_t)-1); + } + + /* Support everything on the null backend. */ + pDeviceInfo->formatCount = ma_format_count - 1; /* Minus one because we don't want to include ma_format_unknown. */ + for (iFormat = 0; iFormat < pDeviceInfo->formatCount; ++iFormat) { + pDeviceInfo->formats[iFormat] = (ma_format)(iFormat + 1); /* +1 to skip over ma_format_unknown. */ + } + + pDeviceInfo->minChannels = 1; + pDeviceInfo->maxChannels = MA_MAX_CHANNELS; + pDeviceInfo->minSampleRate = MA_SAMPLE_RATE_8000; + pDeviceInfo->maxSampleRate = MA_SAMPLE_RATE_384000; + + (void)pContext; + (void)shareMode; + return MA_SUCCESS; +} + + +static void ma_device_uninit__null(ma_device* pDevice) +{ + MA_ASSERT(pDevice != NULL); + + /* Keep it clean and wait for the device thread to finish before returning. */ + ma_device_do_operation__null(pDevice, MA_DEVICE_OP_KILL__NULL); + + /* At this point the loop in the device thread is as good as terminated so we can uninitialize our events. */ + ma_event_uninit(&pDevice->null_device.operationCompletionEvent); + ma_event_uninit(&pDevice->null_device.operationEvent); +} + +static ma_result ma_device_init__null(ma_context* pContext, const ma_device_config* pConfig, ma_device* pDevice) +{ + ma_result result; + ma_uint32 periodSizeInFrames; + + MA_ASSERT(pDevice != NULL); + + MA_ZERO_OBJECT(&pDevice->null_device); + + if (pConfig->deviceType == ma_device_type_loopback) { + return MA_DEVICE_TYPE_NOT_SUPPORTED; + } + + periodSizeInFrames = pConfig->periodSizeInFrames; + if (periodSizeInFrames == 0) { + periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(pConfig->periodSizeInMilliseconds, pConfig->sampleRate); + } + + if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) { + ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), "NULL Capture Device", (size_t)-1); + pDevice->capture.internalFormat = pConfig->capture.format; + pDevice->capture.internalChannels = pConfig->capture.channels; + ma_channel_map_copy(pDevice->capture.internalChannelMap, pConfig->capture.channelMap, pConfig->capture.channels); + pDevice->capture.internalPeriodSizeInFrames = periodSizeInFrames; + pDevice->capture.internalPeriods = pConfig->periods; + } + if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) { + ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), "NULL Playback Device", (size_t)-1); + pDevice->playback.internalFormat = pConfig->playback.format; + pDevice->playback.internalChannels = pConfig->playback.channels; + ma_channel_map_copy(pDevice->playback.internalChannelMap, pConfig->playback.channelMap, pConfig->playback.channels); + pDevice->playback.internalPeriodSizeInFrames = periodSizeInFrames; + pDevice->playback.internalPeriods = pConfig->periods; + } + + /* + In order to get timing right, we need to create a thread that does nothing but keeps track of the timer. This timer is started when the + first period is "written" to it, and then stopped in ma_device_stop__null(). + */ + result = ma_event_init(pContext, &pDevice->null_device.operationEvent); + if (result != MA_SUCCESS) { + return result; + } + + result = ma_event_init(pContext, &pDevice->null_device.operationCompletionEvent); + if (result != MA_SUCCESS) { + return result; + } + + result = ma_thread_create(pContext, &pDevice->thread, ma_device_thread__null, pDevice); + if (result != MA_SUCCESS) { + return result; + } + + return MA_SUCCESS; +} + +static ma_result ma_device_start__null(ma_device* pDevice) +{ + MA_ASSERT(pDevice != NULL); + + ma_device_do_operation__null(pDevice, MA_DEVICE_OP_START__NULL); + + ma_atomic_exchange_32(&pDevice->null_device.isStarted, MA_TRUE); + return MA_SUCCESS; +} + +static ma_result ma_device_stop__null(ma_device* pDevice) +{ + MA_ASSERT(pDevice != NULL); + + ma_device_do_operation__null(pDevice, MA_DEVICE_OP_SUSPEND__NULL); + + ma_atomic_exchange_32(&pDevice->null_device.isStarted, MA_FALSE); + return MA_SUCCESS; +} + +static ma_result ma_device_write__null(ma_device* pDevice, const void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten) +{ + ma_result result = MA_SUCCESS; + ma_uint32 totalPCMFramesProcessed; + ma_bool32 wasStartedOnEntry; + + if (pFramesWritten != NULL) { + *pFramesWritten = 0; + } + + wasStartedOnEntry = pDevice->null_device.isStarted; + + /* Keep going until everything has been read. */ + totalPCMFramesProcessed = 0; + while (totalPCMFramesProcessed < frameCount) { + ma_uint64 targetFrame; + + /* If there are any frames remaining in the current period, consume those first. */ + if (pDevice->null_device.currentPeriodFramesRemainingPlayback > 0) { + ma_uint32 framesRemaining = (frameCount - totalPCMFramesProcessed); + ma_uint32 framesToProcess = pDevice->null_device.currentPeriodFramesRemainingPlayback; + if (framesToProcess > framesRemaining) { + framesToProcess = framesRemaining; + } + + /* We don't actually do anything with pPCMFrames, so just mark it as unused to prevent a warning. */ + (void)pPCMFrames; + + pDevice->null_device.currentPeriodFramesRemainingPlayback -= framesToProcess; + totalPCMFramesProcessed += framesToProcess; + } + + /* If we've consumed the current period we'll need to mark it as such an ensure the device is started if it's not already. */ + if (pDevice->null_device.currentPeriodFramesRemainingPlayback == 0) { + pDevice->null_device.currentPeriodFramesRemainingPlayback = 0; + + if (!pDevice->null_device.isStarted && !wasStartedOnEntry) { + result = ma_device_start__null(pDevice); + if (result != MA_SUCCESS) { + break; + } + } + } + + /* If we've consumed the whole buffer we can return now. */ + MA_ASSERT(totalPCMFramesProcessed <= frameCount); + if (totalPCMFramesProcessed == frameCount) { + break; + } + + /* Getting here means we've still got more frames to consume, we but need to wait for it to become available. */ + targetFrame = pDevice->null_device.lastProcessedFramePlayback; + for (;;) { + ma_uint64 currentFrame; + + /* Stop waiting if the device has been stopped. */ + if (!pDevice->null_device.isStarted) { + break; + } + + currentFrame = ma_device_get_total_run_time_in_frames__null(pDevice); + if (currentFrame >= targetFrame) { + break; + } + + /* Getting here means we haven't yet reached the target sample, so continue waiting. */ + ma_sleep(10); + } + + pDevice->null_device.lastProcessedFramePlayback += pDevice->playback.internalPeriodSizeInFrames; + pDevice->null_device.currentPeriodFramesRemainingPlayback = pDevice->playback.internalPeriodSizeInFrames; + } + + if (pFramesWritten != NULL) { + *pFramesWritten = totalPCMFramesProcessed; + } + + return result; +} + +static ma_result ma_device_read__null(ma_device* pDevice, void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesRead) +{ + ma_result result = MA_SUCCESS; + ma_uint32 totalPCMFramesProcessed; + + if (pFramesRead != NULL) { + *pFramesRead = 0; + } + + /* Keep going until everything has been read. */ + totalPCMFramesProcessed = 0; + while (totalPCMFramesProcessed < frameCount) { + ma_uint64 targetFrame; + + /* If there are any frames remaining in the current period, consume those first. */ + if (pDevice->null_device.currentPeriodFramesRemainingCapture > 0) { + ma_uint32 bpf = ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels); + ma_uint32 framesRemaining = (frameCount - totalPCMFramesProcessed); + ma_uint32 framesToProcess = pDevice->null_device.currentPeriodFramesRemainingCapture; + if (framesToProcess > framesRemaining) { + framesToProcess = framesRemaining; + } + + /* We need to ensured the output buffer is zeroed. */ + MA_ZERO_MEMORY(ma_offset_ptr(pPCMFrames, totalPCMFramesProcessed*bpf), framesToProcess*bpf); + + pDevice->null_device.currentPeriodFramesRemainingCapture -= framesToProcess; + totalPCMFramesProcessed += framesToProcess; + } + + /* If we've consumed the current period we'll need to mark it as such an ensure the device is started if it's not already. */ + if (pDevice->null_device.currentPeriodFramesRemainingCapture == 0) { + pDevice->null_device.currentPeriodFramesRemainingCapture = 0; + } + + /* If we've consumed the whole buffer we can return now. */ + MA_ASSERT(totalPCMFramesProcessed <= frameCount); + if (totalPCMFramesProcessed == frameCount) { + break; + } + + /* Getting here means we've still got more frames to consume, we but need to wait for it to become available. */ + targetFrame = pDevice->null_device.lastProcessedFrameCapture + pDevice->capture.internalPeriodSizeInFrames; + for (;;) { + ma_uint64 currentFrame; + + /* Stop waiting if the device has been stopped. */ + if (!pDevice->null_device.isStarted) { + break; + } + + currentFrame = ma_device_get_total_run_time_in_frames__null(pDevice); + if (currentFrame >= targetFrame) { + break; + } + + /* Getting here means we haven't yet reached the target sample, so continue waiting. */ + ma_sleep(10); + } + + pDevice->null_device.lastProcessedFrameCapture += pDevice->capture.internalPeriodSizeInFrames; + pDevice->null_device.currentPeriodFramesRemainingCapture = pDevice->capture.internalPeriodSizeInFrames; + } + + if (pFramesRead != NULL) { + *pFramesRead = totalPCMFramesProcessed; + } + + return result; +} + +static ma_result ma_device_main_loop__null(ma_device* pDevice) +{ + ma_result result = MA_SUCCESS; + ma_bool32 exitLoop = MA_FALSE; + + MA_ASSERT(pDevice != NULL); + + /* The capture device needs to be started immediately. */ + if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) { + result = ma_device_start__null(pDevice); + if (result != MA_SUCCESS) { + return result; + } + } + + while (ma_device__get_state(pDevice) == MA_STATE_STARTED && !exitLoop) { + switch (pDevice->type) + { + case ma_device_type_duplex: + { + /* The process is: device_read -> convert -> callback -> convert -> device_write */ + ma_uint32 totalCapturedDeviceFramesProcessed = 0; + ma_uint32 capturedDevicePeriodSizeInFrames = ma_min(pDevice->capture.internalPeriodSizeInFrames, pDevice->playback.internalPeriodSizeInFrames); + + while (totalCapturedDeviceFramesProcessed < capturedDevicePeriodSizeInFrames) { + ma_uint8 capturedDeviceData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint8 playbackDeviceData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint32 capturedDeviceDataCapInFrames = sizeof(capturedDeviceData) / ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels); + ma_uint32 playbackDeviceDataCapInFrames = sizeof(playbackDeviceData) / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels); + ma_uint32 capturedDeviceFramesRemaining; + ma_uint32 capturedDeviceFramesProcessed; + ma_uint32 capturedDeviceFramesToProcess; + ma_uint32 capturedDeviceFramesToTryProcessing = capturedDevicePeriodSizeInFrames - totalCapturedDeviceFramesProcessed; + if (capturedDeviceFramesToTryProcessing > capturedDeviceDataCapInFrames) { + capturedDeviceFramesToTryProcessing = capturedDeviceDataCapInFrames; + } + + result = ma_device_read__null(pDevice, capturedDeviceData, capturedDeviceFramesToTryProcessing, &capturedDeviceFramesToProcess); + if (result != MA_SUCCESS) { + exitLoop = MA_TRUE; + break; + } + + capturedDeviceFramesRemaining = capturedDeviceFramesToProcess; + capturedDeviceFramesProcessed = 0; + + /* At this point we have our captured data in device format and we now need to convert it to client format. */ + for (;;) { + ma_uint8 capturedClientData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint8 playbackClientData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; + ma_uint32 capturedClientDataCapInFrames = sizeof(capturedClientData) / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels); + ma_uint32 playbackClientDataCapInFrames = sizeof(playbackClientData) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels); + ma_uint64 capturedClientFramesToProcessThisIteration = ma_min(capturedClientDataCapInFrames, playbackClientDataCapInFrames); + ma_uint64 capturedDeviceFramesToProcessThisIteration = capturedDeviceFramesRemaining; + ma_uint8* pRunningCapturedDeviceFrames = ma_offset_ptr(capturedDeviceData, capturedDeviceFramesProcessed * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels)); + + /* Convert capture data from device format to client format. */ + result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningCapturedDeviceFrames, &capturedDeviceFramesToProcessThisIteration, capturedClientData, &capturedClientFramesToProcessThisIteration); + if (result != MA_SUCCESS) { + break; + } + + /* + If we weren't able to generate any output frames it must mean we've exhaused all of our input. The only time this would not be the case is if capturedClientData was too small + which should never be the case when it's of the size MA_DATA_CONVERTER_STACK_BUFFER_SIZE. + */ + if (capturedClientFramesToProcessThisIteration == 0) { + break; + } + + ma_device__on_data(pDevice, playbackClientData, capturedClientData, (ma_uint32)capturedClientFramesToProcessThisIteration); /* Safe cast .*/ + + capturedDeviceFramesProcessed += (ma_uint32)capturedDeviceFramesToProcessThisIteration; /* Safe cast. */ + capturedDeviceFramesRemaining -= (ma_uint32)capturedDeviceFramesToProcessThisIteration; /* Safe cast. */ + + /* At this point the playbackClientData buffer should be holding data that needs to be written to the device. */ + for (;;) { + ma_uint64 convertedClientFrameCount = capturedClientFramesToProcessThisIteration; + ma_uint64 convertedDeviceFrameCount = playbackDeviceDataCapInFrames; + result = ma_data_converter_process_pcm_frames(&pDevice->playback.converter, playbackClientData, &convertedClientFrameCount, playbackDeviceData, &convertedDeviceFrameCount); + if (result != MA_SUCCESS) { + break; + } + + result = ma_device_write__null(pDevice, playbackDeviceData, (ma_uint32)convertedDeviceFrameCount, NULL); /* Safe cast. */ + if (result != MA_SUCCESS) { + exitLoop = MA_TRUE; + break; + } + + capturedClientFramesToProcessThisIteration -= (ma_uint32)convertedClientFrameCount; /* Safe cast. */ + if (capturedClientFramesToProcessThisIteration == 0) { + break; + } + } + + /* In case an error happened from ma_device_write__null()... */ + if (result != MA_SUCCESS) { + exitLoop = MA_TRUE; + break; + } + } + + totalCapturedDeviceFramesProcessed += capturedDeviceFramesProcessed; + } + } break; + + case ma_device_type_capture: + { + /* We read in chunks of the period size, but use a stack allocated buffer for the intermediary. */ + ma_uint8 intermediaryBuffer[8192]; + ma_uint32 intermediaryBufferSizeInFrames = sizeof(intermediaryBuffer) / ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels); + ma_uint32 periodSizeInFrames = pDevice->capture.internalPeriodSizeInFrames; + ma_uint32 framesReadThisPeriod = 0; + while (framesReadThisPeriod < periodSizeInFrames) { + ma_uint32 framesRemainingInPeriod = periodSizeInFrames - framesReadThisPeriod; + ma_uint32 framesProcessed; + ma_uint32 framesToReadThisIteration = framesRemainingInPeriod; + if (framesToReadThisIteration > intermediaryBufferSizeInFrames) { + framesToReadThisIteration = intermediaryBufferSizeInFrames; + } + + result = ma_device_read__null(pDevice, intermediaryBuffer, framesToReadThisIteration, &framesProcessed); + if (result != MA_SUCCESS) { + exitLoop = MA_TRUE; + break; + } + + ma_device__send_frames_to_client(pDevice, framesProcessed, intermediaryBuffer); + + framesReadThisPeriod += framesProcessed; + } + } break; + + case ma_device_type_playback: + { + /* We write in chunks of the period size, but use a stack allocated buffer for the intermediary. */ + ma_uint8 intermediaryBuffer[8192]; + ma_uint32 intermediaryBufferSizeInFrames = sizeof(intermediaryBuffer) / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels); + ma_uint32 periodSizeInFrames = pDevice->playback.internalPeriodSizeInFrames; + ma_uint32 framesWrittenThisPeriod = 0; + while (framesWrittenThisPeriod < periodSizeInFrames) { + ma_uint32 framesRemainingInPeriod = periodSizeInFrames - framesWrittenThisPeriod; + ma_uint32 framesProcessed; + ma_uint32 framesToWriteThisIteration = framesRemainingInPeriod; + if (framesToWriteThisIteration > intermediaryBufferSizeInFrames) { + framesToWriteThisIteration = intermediaryBufferSizeInFrames; + } + + ma_device__read_frames_from_client(pDevice, framesToWriteThisIteration, intermediaryBuffer); + + result = ma_device_write__null(pDevice, intermediaryBuffer, framesToWriteThisIteration, &framesProcessed); + if (result != MA_SUCCESS) { + exitLoop = MA_TRUE; + break; + } + + framesWrittenThisPeriod += framesProcessed; + } + } break; + + /* To silence a warning. Will never hit this. */ + case ma_device_type_loopback: + default: break; + } + } + + + /* Here is where the device is started. */ + ma_device_stop__null(pDevice); + + return result; +} + +static ma_result ma_context_uninit__null(ma_context* pContext) +{ + MA_ASSERT(pContext != NULL); + MA_ASSERT(pContext->backend == ma_backend_null); + + (void)pContext; + return MA_SUCCESS; +} + +static ma_result ma_context_init__null(const ma_context_config* pConfig, ma_context* pContext) +{ + MA_ASSERT(pContext != NULL); + + (void)pConfig; + + pContext->onUninit = ma_context_uninit__null; + pContext->onDeviceIDEqual = ma_context_is_device_id_equal__null; + pContext->onEnumDevices = ma_context_enumerate_devices__null; + pContext->onGetDeviceInfo = ma_context_get_device_info__null; + pContext->onDeviceInit = ma_device_init__null; + pContext->onDeviceUninit = ma_device_uninit__null; + pContext->onDeviceStart = NULL; /* Not required for synchronous backends. */ + pContext->onDeviceStop = NULL; /* Not required for synchronous backends. */ + pContext->onDeviceMainLoop = ma_device_main_loop__null; + + /* The null backend always works. */ + return MA_SUCCESS; +} +#endif + + +/******************************************************************************* + +WIN32 COMMON + +*******************************************************************************/ +#if defined(MA_WIN32) +#if defined(MA_WIN32_DESKTOP) + #define ma_CoInitializeEx(pContext, pvReserved, dwCoInit) ((MA_PFN_CoInitializeEx)pContext->win32.CoInitializeEx)(pvReserved, dwCoInit) + #define ma_CoUninitialize(pContext) ((MA_PFN_CoUninitialize)pContext->win32.CoUninitialize)() + #define ma_CoCreateInstance(pContext, rclsid, pUnkOuter, dwClsContext, riid, ppv) ((MA_PFN_CoCreateInstance)pContext->win32.CoCreateInstance)(rclsid, pUnkOuter, dwClsContext, riid, ppv) + #define ma_CoTaskMemFree(pContext, pv) ((MA_PFN_CoTaskMemFree)pContext->win32.CoTaskMemFree)(pv) + #define ma_PropVariantClear(pContext, pvar) ((MA_PFN_PropVariantClear)pContext->win32.PropVariantClear)(pvar) +#else + #define ma_CoInitializeEx(pContext, pvReserved, dwCoInit) CoInitializeEx(pvReserved, dwCoInit) + #define ma_CoUninitialize(pContext) CoUninitialize() + #define ma_CoCreateInstance(pContext, rclsid, pUnkOuter, dwClsContext, riid, ppv) CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv) + #define ma_CoTaskMemFree(pContext, pv) CoTaskMemFree(pv) + #define ma_PropVariantClear(pContext, pvar) PropVariantClear(pvar) +#endif + +#if !defined(MAXULONG_PTR) +typedef size_t DWORD_PTR; +#endif + +#if !defined(WAVE_FORMAT_44M08) +#define WAVE_FORMAT_44M08 0x00000100 +#define WAVE_FORMAT_44S08 0x00000200 +#define WAVE_FORMAT_44M16 0x00000400 +#define WAVE_FORMAT_44S16 0x00000800 +#define WAVE_FORMAT_48M08 0x00001000 +#define WAVE_FORMAT_48S08 0x00002000 +#define WAVE_FORMAT_48M16 0x00004000 +#define WAVE_FORMAT_48S16 0x00008000 +#define WAVE_FORMAT_96M08 0x00010000 +#define WAVE_FORMAT_96S08 0x00020000 +#define WAVE_FORMAT_96M16 0x00040000 +#define WAVE_FORMAT_96S16 0x00080000 +#endif + +#ifndef SPEAKER_FRONT_LEFT +#define SPEAKER_FRONT_LEFT 0x1 +#define SPEAKER_FRONT_RIGHT 0x2 +#define SPEAKER_FRONT_CENTER 0x4 +#define SPEAKER_LOW_FREQUENCY 0x8 +#define SPEAKER_BACK_LEFT 0x10 +#define SPEAKER_BACK_RIGHT 0x20 +#define SPEAKER_FRONT_LEFT_OF_CENTER 0x40 +#define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80 +#define SPEAKER_BACK_CENTER 0x100 +#define SPEAKER_SIDE_LEFT 0x200 +#define SPEAKER_SIDE_RIGHT 0x400 +#define SPEAKER_TOP_CENTER 0x800 +#define SPEAKER_TOP_FRONT_LEFT 0x1000 +#define SPEAKER_TOP_FRONT_CENTER 0x2000 +#define SPEAKER_TOP_FRONT_RIGHT 0x4000 +#define SPEAKER_TOP_BACK_LEFT 0x8000 +#define SPEAKER_TOP_BACK_CENTER 0x10000 +#define SPEAKER_TOP_BACK_RIGHT 0x20000 +#endif + +/* +The SDK that comes with old versions of MSVC (VC6, for example) does not appear to define WAVEFORMATEXTENSIBLE. We +define our own implementation in this case. +*/ +#if (defined(_MSC_VER) && !defined(_WAVEFORMATEXTENSIBLE_)) || defined(__DMC__) +typedef struct +{ + WAVEFORMATEX Format; + union + { + WORD wValidBitsPerSample; + WORD wSamplesPerBlock; + WORD wReserved; + } Samples; + DWORD dwChannelMask; + GUID SubFormat; +} WAVEFORMATEXTENSIBLE; +#endif + +#ifndef WAVE_FORMAT_EXTENSIBLE +#define WAVE_FORMAT_EXTENSIBLE 0xFFFE +#endif + +#ifndef WAVE_FORMAT_IEEE_FLOAT +#define WAVE_FORMAT_IEEE_FLOAT 0x0003 +#endif + +static GUID MA_GUID_NULL = {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}; + +/* Converts an individual Win32-style channel identifier (SPEAKER_FRONT_LEFT, etc.) to miniaudio. */ +static ma_uint8 ma_channel_id_to_ma__win32(DWORD id) +{ + switch (id) + { + case SPEAKER_FRONT_LEFT: return MA_CHANNEL_FRONT_LEFT; + case SPEAKER_FRONT_RIGHT: return MA_CHANNEL_FRONT_RIGHT; + case SPEAKER_FRONT_CENTER: return MA_CHANNEL_FRONT_CENTER; + case SPEAKER_LOW_FREQUENCY: return MA_CHANNEL_LFE; + case SPEAKER_BACK_LEFT: return MA_CHANNEL_BACK_LEFT; + case SPEAKER_BACK_RIGHT: return MA_CHANNEL_BACK_RIGHT; + case SPEAKER_FRONT_LEFT_OF_CENTER: return MA_CHANNEL_FRONT_LEFT_CENTER; + case SPEAKER_FRONT_RIGHT_OF_CENTER: return MA_CHANNEL_FRONT_RIGHT_CENTER; + case SPEAKER_BACK_CENTER: return MA_CHANNEL_BACK_CENTER; + case SPEAKER_SIDE_LEFT: return MA_CHANNEL_SIDE_LEFT; + case SPEAKER_SIDE_RIGHT: return MA_CHANNEL_SIDE_RIGHT; + case SPEAKER_TOP_CENTER: return MA_CHANNEL_TOP_CENTER; + case SPEAKER_TOP_FRONT_LEFT: return MA_CHANNEL_TOP_FRONT_LEFT; + case SPEAKER_TOP_FRONT_CENTER: return MA_CHANNEL_TOP_FRONT_CENTER; + case SPEAKER_TOP_FRONT_RIGHT: return MA_CHANNEL_TOP_FRONT_RIGHT; + case SPEAKER_TOP_BACK_LEFT: return MA_CHANNEL_TOP_BACK_LEFT; + case SPEAKER_TOP_BACK_CENTER: return MA_CHANNEL_TOP_BACK_CENTER; + case SPEAKER_TOP_BACK_RIGHT: return MA_CHANNEL_TOP_BACK_RIGHT; + default: return 0; + } +} + +/* Converts an individual miniaudio channel identifier (MA_CHANNEL_FRONT_LEFT, etc.) to Win32-style. */ +static DWORD ma_channel_id_to_win32(DWORD id) +{ + switch (id) + { + case MA_CHANNEL_MONO: return SPEAKER_FRONT_CENTER; + case MA_CHANNEL_FRONT_LEFT: return SPEAKER_FRONT_LEFT; + case MA_CHANNEL_FRONT_RIGHT: return SPEAKER_FRONT_RIGHT; + case MA_CHANNEL_FRONT_CENTER: return SPEAKER_FRONT_CENTER; + case MA_CHANNEL_LFE: return SPEAKER_LOW_FREQUENCY; + case MA_CHANNEL_BACK_LEFT: return SPEAKER_BACK_LEFT; + case MA_CHANNEL_BACK_RIGHT: return SPEAKER_BACK_RIGHT; + case MA_CHANNEL_FRONT_LEFT_CENTER: return SPEAKER_FRONT_LEFT_OF_CENTER; + case MA_CHANNEL_FRONT_RIGHT_CENTER: return SPEAKER_FRONT_RIGHT_OF_CENTER; + case MA_CHANNEL_BACK_CENTER: return SPEAKER_BACK_CENTER; + case MA_CHANNEL_SIDE_LEFT: return SPEAKER_SIDE_LEFT; + case MA_CHANNEL_SIDE_RIGHT: return SPEAKER_SIDE_RIGHT; + case MA_CHANNEL_TOP_CENTER: return SPEAKER_TOP_CENTER; + case MA_CHANNEL_TOP_FRONT_LEFT: return SPEAKER_TOP_FRONT_LEFT; + case MA_CHANNEL_TOP_FRONT_CENTER: return SPEAKER_TOP_FRONT_CENTER; + case MA_CHANNEL_TOP_FRONT_RIGHT: return SPEAKER_TOP_FRONT_RIGHT; + case MA_CHANNEL_TOP_BACK_LEFT: return SPEAKER_TOP_BACK_LEFT; + case MA_CHANNEL_TOP_BACK_CENTER: return SPEAKER_TOP_BACK_CENTER; + case MA_CHANNEL_TOP_BACK_RIGHT: return SPEAKER_TOP_BACK_RIGHT; + default: return 0; + } +} + +/* Converts a channel mapping to a Win32-style channel mask. */ +static DWORD ma_channel_map_to_channel_mask__win32(const ma_channel channelMap[MA_MAX_CHANNELS], ma_uint32 channels) +{ + DWORD dwChannelMask = 0; + ma_uint32 iChannel; + + for (iChannel = 0; iChannel < channels; ++iChannel) { + dwChannelMask |= ma_channel_id_to_win32(channelMap[iChannel]); + } + + return dwChannelMask; +} + +/* Converts a Win32-style channel mask to a miniaudio channel map. */ +static void ma_channel_mask_to_channel_map__win32(DWORD dwChannelMask, ma_uint32 channels, ma_channel channelMap[MA_MAX_CHANNELS]) +{ + if (channels == 1 && dwChannelMask == 0) { + channelMap[0] = MA_CHANNEL_MONO; + } else if (channels == 2 && dwChannelMask == 0) { + channelMap[0] = MA_CHANNEL_FRONT_LEFT; + channelMap[1] = MA_CHANNEL_FRONT_RIGHT; + } else { + if (channels == 1 && (dwChannelMask & SPEAKER_FRONT_CENTER) != 0) { + channelMap[0] = MA_CHANNEL_MONO; + } else { + /* Just iterate over each bit. */ + ma_uint32 iChannel = 0; + ma_uint32 iBit; + + for (iBit = 0; iBit < 32; ++iBit) { + DWORD bitValue = (dwChannelMask & (1UL << iBit)); + if (bitValue != 0) { + /* The bit is set. */ + channelMap[iChannel] = ma_channel_id_to_ma__win32(bitValue); + iChannel += 1; + } + } + } + } +} + +#ifdef __cplusplus +static ma_bool32 ma_is_guid_equal(const void* a, const void* b) +{ + return IsEqualGUID(*(const GUID*)a, *(const GUID*)b); +} +#else +#define ma_is_guid_equal(a, b) IsEqualGUID((const GUID*)a, (const GUID*)b) +#endif + +static ma_format ma_format_from_WAVEFORMATEX(const WAVEFORMATEX* pWF) +{ + MA_ASSERT(pWF != NULL); + + if (pWF->wFormatTag == WAVE_FORMAT_EXTENSIBLE) { + const WAVEFORMATEXTENSIBLE* pWFEX = (const WAVEFORMATEXTENSIBLE*)pWF; + if (ma_is_guid_equal(&pWFEX->SubFormat, &MA_GUID_KSDATAFORMAT_SUBTYPE_PCM)) { + if (pWFEX->Samples.wValidBitsPerSample == 32) { + return ma_format_s32; + } + if (pWFEX->Samples.wValidBitsPerSample == 24) { + if (pWFEX->Format.wBitsPerSample == 32) { + /*return ma_format_s24_32;*/ + } + if (pWFEX->Format.wBitsPerSample == 24) { + return ma_format_s24; + } + } + if (pWFEX->Samples.wValidBitsPerSample == 16) { + return ma_format_s16; + } + if (pWFEX->Samples.wValidBitsPerSample == 8) { + return ma_format_u8; + } + } + if (ma_is_guid_equal(&pWFEX->SubFormat, &MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) { + if (pWFEX->Samples.wValidBitsPerSample == 32) { + return ma_format_f32; + } + /* + if (pWFEX->Samples.wValidBitsPerSample == 64) { + return ma_format_f64; + } + */ + } + } else { + if (pWF->wFormatTag == WAVE_FORMAT_PCM) { + if (pWF->wBitsPerSample == 32) { + return ma_format_s32; + } + if (pWF->wBitsPerSample == 24) { + return ma_format_s24; + } + if (pWF->wBitsPerSample == 16) { + return ma_format_s16; + } + if (pWF->wBitsPerSample == 8) { + return ma_format_u8; + } + } + if (pWF->wFormatTag == WAVE_FORMAT_IEEE_FLOAT) { + if (pWF->wBitsPerSample == 32) { + return ma_format_f32; + } + if (pWF->wBitsPerSample == 64) { + /*return ma_format_f64;*/ + } + } + } + + return ma_format_unknown; +} +#endif + + +/******************************************************************************* + +WASAPI Backend + +*******************************************************************************/ +#ifdef MA_HAS_WASAPI +#if 0 +#if defined(_MSC_VER) + #pragma warning(push) + #pragma warning(disable:4091) /* 'typedef ': ignored on left of '' when no variable is declared */ +#endif +#include <audioclient.h> +#include <mmdeviceapi.h> +#if defined(_MSC_VER) + #pragma warning(pop) +#endif +#endif /* 0 */ + +/* Some compilers don't define VerifyVersionInfoW. Need to write this ourselves. */ +#define MA_WIN32_WINNT_VISTA 0x0600 +#define MA_VER_MINORVERSION 0x01 +#define MA_VER_MAJORVERSION 0x02 +#define MA_VER_SERVICEPACKMAJOR 0x20 +#define MA_VER_GREATER_EQUAL 0x03 + +typedef struct { + DWORD dwOSVersionInfoSize; + DWORD dwMajorVersion; + DWORD dwMinorVersion; + DWORD dwBuildNumber; + DWORD dwPlatformId; + WCHAR szCSDVersion[128]; + WORD wServicePackMajor; + WORD wServicePackMinor; + WORD wSuiteMask; + BYTE wProductType; + BYTE wReserved; +} ma_OSVERSIONINFOEXW; + +typedef BOOL (WINAPI * ma_PFNVerifyVersionInfoW) (ma_OSVERSIONINFOEXW* lpVersionInfo, DWORD dwTypeMask, DWORDLONG dwlConditionMask); +typedef ULONGLONG (WINAPI * ma_PFNVerSetConditionMask)(ULONGLONG dwlConditionMask, DWORD dwTypeBitMask, BYTE dwConditionMask); + + +#ifndef PROPERTYKEY_DEFINED +#define PROPERTYKEY_DEFINED +typedef struct +{ + GUID fmtid; + DWORD pid; +} PROPERTYKEY; +#endif + +/* Some compilers don't define PropVariantInit(). We just do this ourselves since it's just a memset(). */ +static MA_INLINE void ma_PropVariantInit(PROPVARIANT* pProp) +{ + MA_ZERO_OBJECT(pProp); +} + + +static const PROPERTYKEY MA_PKEY_Device_FriendlyName = {{0xA45C254E, 0xDF1C, 0x4EFD, {0x80, 0x20, 0x67, 0xD1, 0x46, 0xA8, 0x50, 0xE0}}, 14}; +static const PROPERTYKEY MA_PKEY_AudioEngine_DeviceFormat = {{0xF19F064D, 0x82C, 0x4E27, {0xBC, 0x73, 0x68, 0x82, 0xA1, 0xBB, 0x8E, 0x4C}}, 0}; + +static const IID MA_IID_IUnknown = {0x00000000, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}}; /* 00000000-0000-0000-C000-000000000046 */ +static const IID MA_IID_IAgileObject = {0x94EA2B94, 0xE9CC, 0x49E0, {0xC0, 0xFF, 0xEE, 0x64, 0xCA, 0x8F, 0x5B, 0x90}}; /* 94EA2B94-E9CC-49E0-C0FF-EE64CA8F5B90 */ + +static const IID MA_IID_IAudioClient = {0x1CB9AD4C, 0xDBFA, 0x4C32, {0xB1, 0x78, 0xC2, 0xF5, 0x68, 0xA7, 0x03, 0xB2}}; /* 1CB9AD4C-DBFA-4C32-B178-C2F568A703B2 = __uuidof(IAudioClient) */ +static const IID MA_IID_IAudioClient2 = {0x726778CD, 0xF60A, 0x4EDA, {0x82, 0xDE, 0xE4, 0x76, 0x10, 0xCD, 0x78, 0xAA}}; /* 726778CD-F60A-4EDA-82DE-E47610CD78AA = __uuidof(IAudioClient2) */ +static const IID MA_IID_IAudioClient3 = {0x7ED4EE07, 0x8E67, 0x4CD4, {0x8C, 0x1A, 0x2B, 0x7A, 0x59, 0x87, 0xAD, 0x42}}; /* 7ED4EE07-8E67-4CD4-8C1A-2B7A5987AD42 = __uuidof(IAudioClient3) */ +static const IID MA_IID_IAudioRenderClient = {0xF294ACFC, 0x3146, 0x4483, {0xA7, 0xBF, 0xAD, 0xDC, 0xA7, 0xC2, 0x60, 0xE2}}; /* F294ACFC-3146-4483-A7BF-ADDCA7C260E2 = __uuidof(IAudioRenderClient) */ +static const IID MA_IID_IAudioCaptureClient = {0xC8ADBD64, 0xE71E, 0x48A0, {0xA4, 0xDE, 0x18, 0x5C, 0x39, 0x5C, 0xD3, 0x17}}; /* C8ADBD64-E71E-48A0-A4DE-185C395CD317 = __uuidof(IAudioCaptureClient) */ +static const IID MA_IID_IMMNotificationClient = {0x7991EEC9, 0x7E89, 0x4D85, {0x83, 0x90, 0x6C, 0x70, 0x3C, 0xEC, 0x60, 0xC0}}; /* 7991EEC9-7E89-4D85-8390-6C703CEC60C0 = __uuidof(IMMNotificationClient) */ +#ifndef MA_WIN32_DESKTOP +static const IID MA_IID_DEVINTERFACE_AUDIO_RENDER = {0xE6327CAD, 0xDCEC, 0x4949, {0xAE, 0x8A, 0x99, 0x1E, 0x97, 0x6A, 0x79, 0xD2}}; /* E6327CAD-DCEC-4949-AE8A-991E976A79D2 */ +static const IID MA_IID_DEVINTERFACE_AUDIO_CAPTURE = {0x2EEF81BE, 0x33FA, 0x4800, {0x96, 0x70, 0x1C, 0xD4, 0x74, 0x97, 0x2C, 0x3F}}; /* 2EEF81BE-33FA-4800-9670-1CD474972C3F */ +static const IID MA_IID_IActivateAudioInterfaceCompletionHandler = {0x41D949AB, 0x9862, 0x444A, {0x80, 0xF6, 0xC2, 0x61, 0x33, 0x4D, 0xA5, 0xEB}}; /* 41D949AB-9862-444A-80F6-C261334DA5EB */ +#endif + +static const IID MA_CLSID_MMDeviceEnumerator_Instance = {0xBCDE0395, 0xE52F, 0x467C, {0x8E, 0x3D, 0xC4, 0x57, 0x92, 0x91, 0x69, 0x2E}}; /* BCDE0395-E52F-467C-8E3D-C4579291692E = __uuidof(MMDeviceEnumerator) */ +static const IID MA_IID_IMMDeviceEnumerator_Instance = {0xA95664D2, 0x9614, 0x4F35, {0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36, 0x17, 0xE6}}; /* A95664D2-9614-4F35-A746-DE8DB63617E6 = __uuidof(IMMDeviceEnumerator) */ +#ifdef __cplusplus +#define MA_CLSID_MMDeviceEnumerator MA_CLSID_MMDeviceEnumerator_Instance +#define MA_IID_IMMDeviceEnumerator MA_IID_IMMDeviceEnumerator_Instance +#else +#define MA_CLSID_MMDeviceEnumerator &MA_CLSID_MMDeviceEnumerator_Instance +#define MA_IID_IMMDeviceEnumerator &MA_IID_IMMDeviceEnumerator_Instance +#endif + +typedef struct ma_IUnknown ma_IUnknown; +#ifdef MA_WIN32_DESKTOP +#define MA_MM_DEVICE_STATE_ACTIVE 1 +#define MA_MM_DEVICE_STATE_DISABLED 2 +#define MA_MM_DEVICE_STATE_NOTPRESENT 4 +#define MA_MM_DEVICE_STATE_UNPLUGGED 8 + +typedef struct ma_IMMDeviceEnumerator ma_IMMDeviceEnumerator; +typedef struct ma_IMMDeviceCollection ma_IMMDeviceCollection; +typedef struct ma_IMMDevice ma_IMMDevice; +#else +typedef struct ma_IActivateAudioInterfaceCompletionHandler ma_IActivateAudioInterfaceCompletionHandler; +typedef struct ma_IActivateAudioInterfaceAsyncOperation ma_IActivateAudioInterfaceAsyncOperation; +#endif +typedef struct ma_IPropertyStore ma_IPropertyStore; +typedef struct ma_IAudioClient ma_IAudioClient; +typedef struct ma_IAudioClient2 ma_IAudioClient2; +typedef struct ma_IAudioClient3 ma_IAudioClient3; +typedef struct ma_IAudioRenderClient ma_IAudioRenderClient; +typedef struct ma_IAudioCaptureClient ma_IAudioCaptureClient; + +typedef ma_int64 MA_REFERENCE_TIME; + +#define MA_AUDCLNT_STREAMFLAGS_CROSSPROCESS 0x00010000 +#define MA_AUDCLNT_STREAMFLAGS_LOOPBACK 0x00020000 +#define MA_AUDCLNT_STREAMFLAGS_EVENTCALLBACK 0x00040000 +#define MA_AUDCLNT_STREAMFLAGS_NOPERSIST 0x00080000 +#define MA_AUDCLNT_STREAMFLAGS_RATEADJUST 0x00100000 +#define MA_AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY 0x08000000 +#define MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM 0x80000000 +#define MA_AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED 0x10000000 +#define MA_AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE 0x20000000 +#define MA_AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED 0x40000000 + +/* Buffer flags. */ +#define MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY 1 +#define MA_AUDCLNT_BUFFERFLAGS_SILENT 2 +#define MA_AUDCLNT_BUFFERFLAGS_TIMESTAMP_ERROR 4 + +typedef enum +{ + ma_eRender = 0, + ma_eCapture = 1, + ma_eAll = 2 +} ma_EDataFlow; + +typedef enum +{ + ma_eConsole = 0, + ma_eMultimedia = 1, + ma_eCommunications = 2 +} ma_ERole; + +typedef enum +{ + MA_AUDCLNT_SHAREMODE_SHARED, + MA_AUDCLNT_SHAREMODE_EXCLUSIVE +} MA_AUDCLNT_SHAREMODE; + +typedef enum +{ + MA_AudioCategory_Other = 0 /* <-- miniaudio is only caring about Other. */ +} MA_AUDIO_STREAM_CATEGORY; + +typedef struct +{ + UINT32 cbSize; + BOOL bIsOffload; + MA_AUDIO_STREAM_CATEGORY eCategory; +} ma_AudioClientProperties; + +/* IUnknown */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IUnknown* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IUnknown* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IUnknown* pThis); +} ma_IUnknownVtbl; +struct ma_IUnknown +{ + ma_IUnknownVtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IUnknown_QueryInterface(ma_IUnknown* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IUnknown_AddRef(ma_IUnknown* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IUnknown_Release(ma_IUnknown* pThis) { return pThis->lpVtbl->Release(pThis); } + +#ifdef MA_WIN32_DESKTOP + /* IMMNotificationClient */ + typedef struct + { + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMNotificationClient* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IMMNotificationClient* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IMMNotificationClient* pThis); + + /* IMMNotificationClient */ + HRESULT (STDMETHODCALLTYPE * OnDeviceStateChanged) (ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID, DWORD dwNewState); + HRESULT (STDMETHODCALLTYPE * OnDeviceAdded) (ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID); + HRESULT (STDMETHODCALLTYPE * OnDeviceRemoved) (ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID); + HRESULT (STDMETHODCALLTYPE * OnDefaultDeviceChanged)(ma_IMMNotificationClient* pThis, ma_EDataFlow dataFlow, ma_ERole role, LPCWSTR pDefaultDeviceID); + HRESULT (STDMETHODCALLTYPE * OnPropertyValueChanged)(ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID, const PROPERTYKEY key); + } ma_IMMNotificationClientVtbl; + + /* IMMDeviceEnumerator */ + typedef struct + { + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMDeviceEnumerator* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IMMDeviceEnumerator* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IMMDeviceEnumerator* pThis); + + /* IMMDeviceEnumerator */ + HRESULT (STDMETHODCALLTYPE * EnumAudioEndpoints) (ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, DWORD dwStateMask, ma_IMMDeviceCollection** ppDevices); + HRESULT (STDMETHODCALLTYPE * GetDefaultAudioEndpoint) (ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, ma_ERole role, ma_IMMDevice** ppEndpoint); + HRESULT (STDMETHODCALLTYPE * GetDevice) (ma_IMMDeviceEnumerator* pThis, LPCWSTR pID, ma_IMMDevice** ppDevice); + HRESULT (STDMETHODCALLTYPE * RegisterEndpointNotificationCallback) (ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient); + HRESULT (STDMETHODCALLTYPE * UnregisterEndpointNotificationCallback)(ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient); + } ma_IMMDeviceEnumeratorVtbl; + struct ma_IMMDeviceEnumerator + { + ma_IMMDeviceEnumeratorVtbl* lpVtbl; + }; + static MA_INLINE HRESULT ma_IMMDeviceEnumerator_QueryInterface(ma_IMMDeviceEnumerator* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } + static MA_INLINE ULONG ma_IMMDeviceEnumerator_AddRef(ma_IMMDeviceEnumerator* pThis) { return pThis->lpVtbl->AddRef(pThis); } + static MA_INLINE ULONG ma_IMMDeviceEnumerator_Release(ma_IMMDeviceEnumerator* pThis) { return pThis->lpVtbl->Release(pThis); } + static MA_INLINE HRESULT ma_IMMDeviceEnumerator_EnumAudioEndpoints(ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, DWORD dwStateMask, ma_IMMDeviceCollection** ppDevices) { return pThis->lpVtbl->EnumAudioEndpoints(pThis, dataFlow, dwStateMask, ppDevices); } + static MA_INLINE HRESULT ma_IMMDeviceEnumerator_GetDefaultAudioEndpoint(ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, ma_ERole role, ma_IMMDevice** ppEndpoint) { return pThis->lpVtbl->GetDefaultAudioEndpoint(pThis, dataFlow, role, ppEndpoint); } + static MA_INLINE HRESULT ma_IMMDeviceEnumerator_GetDevice(ma_IMMDeviceEnumerator* pThis, LPCWSTR pID, ma_IMMDevice** ppDevice) { return pThis->lpVtbl->GetDevice(pThis, pID, ppDevice); } + static MA_INLINE HRESULT ma_IMMDeviceEnumerator_RegisterEndpointNotificationCallback(ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient) { return pThis->lpVtbl->RegisterEndpointNotificationCallback(pThis, pClient); } + static MA_INLINE HRESULT ma_IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient) { return pThis->lpVtbl->UnregisterEndpointNotificationCallback(pThis, pClient); } + + + /* IMMDeviceCollection */ + typedef struct + { + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMDeviceCollection* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IMMDeviceCollection* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IMMDeviceCollection* pThis); + + /* IMMDeviceCollection */ + HRESULT (STDMETHODCALLTYPE * GetCount)(ma_IMMDeviceCollection* pThis, UINT* pDevices); + HRESULT (STDMETHODCALLTYPE * Item) (ma_IMMDeviceCollection* pThis, UINT nDevice, ma_IMMDevice** ppDevice); + } ma_IMMDeviceCollectionVtbl; + struct ma_IMMDeviceCollection + { + ma_IMMDeviceCollectionVtbl* lpVtbl; + }; + static MA_INLINE HRESULT ma_IMMDeviceCollection_QueryInterface(ma_IMMDeviceCollection* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } + static MA_INLINE ULONG ma_IMMDeviceCollection_AddRef(ma_IMMDeviceCollection* pThis) { return pThis->lpVtbl->AddRef(pThis); } + static MA_INLINE ULONG ma_IMMDeviceCollection_Release(ma_IMMDeviceCollection* pThis) { return pThis->lpVtbl->Release(pThis); } + static MA_INLINE HRESULT ma_IMMDeviceCollection_GetCount(ma_IMMDeviceCollection* pThis, UINT* pDevices) { return pThis->lpVtbl->GetCount(pThis, pDevices); } + static MA_INLINE HRESULT ma_IMMDeviceCollection_Item(ma_IMMDeviceCollection* pThis, UINT nDevice, ma_IMMDevice** ppDevice) { return pThis->lpVtbl->Item(pThis, nDevice, ppDevice); } + + + /* IMMDevice */ + typedef struct + { + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMDevice* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IMMDevice* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IMMDevice* pThis); + + /* IMMDevice */ + HRESULT (STDMETHODCALLTYPE * Activate) (ma_IMMDevice* pThis, const IID* const iid, DWORD dwClsCtx, PROPVARIANT* pActivationParams, void** ppInterface); + HRESULT (STDMETHODCALLTYPE * OpenPropertyStore)(ma_IMMDevice* pThis, DWORD stgmAccess, ma_IPropertyStore** ppProperties); + HRESULT (STDMETHODCALLTYPE * GetId) (ma_IMMDevice* pThis, LPWSTR *pID); + HRESULT (STDMETHODCALLTYPE * GetState) (ma_IMMDevice* pThis, DWORD *pState); + } ma_IMMDeviceVtbl; + struct ma_IMMDevice + { + ma_IMMDeviceVtbl* lpVtbl; + }; + static MA_INLINE HRESULT ma_IMMDevice_QueryInterface(ma_IMMDevice* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } + static MA_INLINE ULONG ma_IMMDevice_AddRef(ma_IMMDevice* pThis) { return pThis->lpVtbl->AddRef(pThis); } + static MA_INLINE ULONG ma_IMMDevice_Release(ma_IMMDevice* pThis) { return pThis->lpVtbl->Release(pThis); } + static MA_INLINE HRESULT ma_IMMDevice_Activate(ma_IMMDevice* pThis, const IID* const iid, DWORD dwClsCtx, PROPVARIANT* pActivationParams, void** ppInterface) { return pThis->lpVtbl->Activate(pThis, iid, dwClsCtx, pActivationParams, ppInterface); } + static MA_INLINE HRESULT ma_IMMDevice_OpenPropertyStore(ma_IMMDevice* pThis, DWORD stgmAccess, ma_IPropertyStore** ppProperties) { return pThis->lpVtbl->OpenPropertyStore(pThis, stgmAccess, ppProperties); } + static MA_INLINE HRESULT ma_IMMDevice_GetId(ma_IMMDevice* pThis, LPWSTR *pID) { return pThis->lpVtbl->GetId(pThis, pID); } + static MA_INLINE HRESULT ma_IMMDevice_GetState(ma_IMMDevice* pThis, DWORD *pState) { return pThis->lpVtbl->GetState(pThis, pState); } +#else + /* IActivateAudioInterfaceAsyncOperation */ + typedef struct + { + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IActivateAudioInterfaceAsyncOperation* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IActivateAudioInterfaceAsyncOperation* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IActivateAudioInterfaceAsyncOperation* pThis); + + /* IActivateAudioInterfaceAsyncOperation */ + HRESULT (STDMETHODCALLTYPE * GetActivateResult)(ma_IActivateAudioInterfaceAsyncOperation* pThis, HRESULT *pActivateResult, ma_IUnknown** ppActivatedInterface); + } ma_IActivateAudioInterfaceAsyncOperationVtbl; + struct ma_IActivateAudioInterfaceAsyncOperation + { + ma_IActivateAudioInterfaceAsyncOperationVtbl* lpVtbl; + }; + static MA_INLINE HRESULT ma_IActivateAudioInterfaceAsyncOperation_QueryInterface(ma_IActivateAudioInterfaceAsyncOperation* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } + static MA_INLINE ULONG ma_IActivateAudioInterfaceAsyncOperation_AddRef(ma_IActivateAudioInterfaceAsyncOperation* pThis) { return pThis->lpVtbl->AddRef(pThis); } + static MA_INLINE ULONG ma_IActivateAudioInterfaceAsyncOperation_Release(ma_IActivateAudioInterfaceAsyncOperation* pThis) { return pThis->lpVtbl->Release(pThis); } + static MA_INLINE HRESULT ma_IActivateAudioInterfaceAsyncOperation_GetActivateResult(ma_IActivateAudioInterfaceAsyncOperation* pThis, HRESULT *pActivateResult, ma_IUnknown** ppActivatedInterface) { return pThis->lpVtbl->GetActivateResult(pThis, pActivateResult, ppActivatedInterface); } +#endif + +/* IPropertyStore */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IPropertyStore* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IPropertyStore* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IPropertyStore* pThis); + + /* IPropertyStore */ + HRESULT (STDMETHODCALLTYPE * GetCount)(ma_IPropertyStore* pThis, DWORD* pPropCount); + HRESULT (STDMETHODCALLTYPE * GetAt) (ma_IPropertyStore* pThis, DWORD propIndex, PROPERTYKEY* pPropKey); + HRESULT (STDMETHODCALLTYPE * GetValue)(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, PROPVARIANT* pPropVar); + HRESULT (STDMETHODCALLTYPE * SetValue)(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, const PROPVARIANT* const pPropVar); + HRESULT (STDMETHODCALLTYPE * Commit) (ma_IPropertyStore* pThis); +} ma_IPropertyStoreVtbl; +struct ma_IPropertyStore +{ + ma_IPropertyStoreVtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IPropertyStore_QueryInterface(ma_IPropertyStore* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IPropertyStore_AddRef(ma_IPropertyStore* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IPropertyStore_Release(ma_IPropertyStore* pThis) { return pThis->lpVtbl->Release(pThis); } +static MA_INLINE HRESULT ma_IPropertyStore_GetCount(ma_IPropertyStore* pThis, DWORD* pPropCount) { return pThis->lpVtbl->GetCount(pThis, pPropCount); } +static MA_INLINE HRESULT ma_IPropertyStore_GetAt(ma_IPropertyStore* pThis, DWORD propIndex, PROPERTYKEY* pPropKey) { return pThis->lpVtbl->GetAt(pThis, propIndex, pPropKey); } +static MA_INLINE HRESULT ma_IPropertyStore_GetValue(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, PROPVARIANT* pPropVar) { return pThis->lpVtbl->GetValue(pThis, pKey, pPropVar); } +static MA_INLINE HRESULT ma_IPropertyStore_SetValue(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, const PROPVARIANT* const pPropVar) { return pThis->lpVtbl->SetValue(pThis, pKey, pPropVar); } +static MA_INLINE HRESULT ma_IPropertyStore_Commit(ma_IPropertyStore* pThis) { return pThis->lpVtbl->Commit(pThis); } + + +/* IAudioClient */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioClient* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IAudioClient* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IAudioClient* pThis); + + /* IAudioClient */ + HRESULT (STDMETHODCALLTYPE * Initialize) (ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid); + HRESULT (STDMETHODCALLTYPE * GetBufferSize) (ma_IAudioClient* pThis, ma_uint32* pNumBufferFrames); + HRESULT (STDMETHODCALLTYPE * GetStreamLatency) (ma_IAudioClient* pThis, MA_REFERENCE_TIME* pLatency); + HRESULT (STDMETHODCALLTYPE * GetCurrentPadding)(ma_IAudioClient* pThis, ma_uint32* pNumPaddingFrames); + HRESULT (STDMETHODCALLTYPE * IsFormatSupported)(ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, const WAVEFORMATEX* pFormat, WAVEFORMATEX** ppClosestMatch); + HRESULT (STDMETHODCALLTYPE * GetMixFormat) (ma_IAudioClient* pThis, WAVEFORMATEX** ppDeviceFormat); + HRESULT (STDMETHODCALLTYPE * GetDevicePeriod) (ma_IAudioClient* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod); + HRESULT (STDMETHODCALLTYPE * Start) (ma_IAudioClient* pThis); + HRESULT (STDMETHODCALLTYPE * Stop) (ma_IAudioClient* pThis); + HRESULT (STDMETHODCALLTYPE * Reset) (ma_IAudioClient* pThis); + HRESULT (STDMETHODCALLTYPE * SetEventHandle) (ma_IAudioClient* pThis, HANDLE eventHandle); + HRESULT (STDMETHODCALLTYPE * GetService) (ma_IAudioClient* pThis, const IID* const riid, void** pp); +} ma_IAudioClientVtbl; +struct ma_IAudioClient +{ + ma_IAudioClientVtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IAudioClient_QueryInterface(ma_IAudioClient* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IAudioClient_AddRef(ma_IAudioClient* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IAudioClient_Release(ma_IAudioClient* pThis) { return pThis->lpVtbl->Release(pThis); } +static MA_INLINE HRESULT ma_IAudioClient_Initialize(ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid) { return pThis->lpVtbl->Initialize(pThis, shareMode, streamFlags, bufferDuration, periodicity, pFormat, pAudioSessionGuid); } +static MA_INLINE HRESULT ma_IAudioClient_GetBufferSize(ma_IAudioClient* pThis, ma_uint32* pNumBufferFrames) { return pThis->lpVtbl->GetBufferSize(pThis, pNumBufferFrames); } +static MA_INLINE HRESULT ma_IAudioClient_GetStreamLatency(ma_IAudioClient* pThis, MA_REFERENCE_TIME* pLatency) { return pThis->lpVtbl->GetStreamLatency(pThis, pLatency); } +static MA_INLINE HRESULT ma_IAudioClient_GetCurrentPadding(ma_IAudioClient* pThis, ma_uint32* pNumPaddingFrames) { return pThis->lpVtbl->GetCurrentPadding(pThis, pNumPaddingFrames); } +static MA_INLINE HRESULT ma_IAudioClient_IsFormatSupported(ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, const WAVEFORMATEX* pFormat, WAVEFORMATEX** ppClosestMatch) { return pThis->lpVtbl->IsFormatSupported(pThis, shareMode, pFormat, ppClosestMatch); } +static MA_INLINE HRESULT ma_IAudioClient_GetMixFormat(ma_IAudioClient* pThis, WAVEFORMATEX** ppDeviceFormat) { return pThis->lpVtbl->GetMixFormat(pThis, ppDeviceFormat); } +static MA_INLINE HRESULT ma_IAudioClient_GetDevicePeriod(ma_IAudioClient* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod) { return pThis->lpVtbl->GetDevicePeriod(pThis, pDefaultDevicePeriod, pMinimumDevicePeriod); } +static MA_INLINE HRESULT ma_IAudioClient_Start(ma_IAudioClient* pThis) { return pThis->lpVtbl->Start(pThis); } +static MA_INLINE HRESULT ma_IAudioClient_Stop(ma_IAudioClient* pThis) { return pThis->lpVtbl->Stop(pThis); } +static MA_INLINE HRESULT ma_IAudioClient_Reset(ma_IAudioClient* pThis) { return pThis->lpVtbl->Reset(pThis); } +static MA_INLINE HRESULT ma_IAudioClient_SetEventHandle(ma_IAudioClient* pThis, HANDLE eventHandle) { return pThis->lpVtbl->SetEventHandle(pThis, eventHandle); } +static MA_INLINE HRESULT ma_IAudioClient_GetService(ma_IAudioClient* pThis, const IID* const riid, void** pp) { return pThis->lpVtbl->GetService(pThis, riid, pp); } + +/* IAudioClient2 */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioClient2* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IAudioClient2* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IAudioClient2* pThis); + + /* IAudioClient */ + HRESULT (STDMETHODCALLTYPE * Initialize) (ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid); + HRESULT (STDMETHODCALLTYPE * GetBufferSize) (ma_IAudioClient2* pThis, ma_uint32* pNumBufferFrames); + HRESULT (STDMETHODCALLTYPE * GetStreamLatency) (ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pLatency); + HRESULT (STDMETHODCALLTYPE * GetCurrentPadding)(ma_IAudioClient2* pThis, ma_uint32* pNumPaddingFrames); + HRESULT (STDMETHODCALLTYPE * IsFormatSupported)(ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, const WAVEFORMATEX* pFormat, WAVEFORMATEX** ppClosestMatch); + HRESULT (STDMETHODCALLTYPE * GetMixFormat) (ma_IAudioClient2* pThis, WAVEFORMATEX** ppDeviceFormat); + HRESULT (STDMETHODCALLTYPE * GetDevicePeriod) (ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod); + HRESULT (STDMETHODCALLTYPE * Start) (ma_IAudioClient2* pThis); + HRESULT (STDMETHODCALLTYPE * Stop) (ma_IAudioClient2* pThis); + HRESULT (STDMETHODCALLTYPE * Reset) (ma_IAudioClient2* pThis); + HRESULT (STDMETHODCALLTYPE * SetEventHandle) (ma_IAudioClient2* pThis, HANDLE eventHandle); + HRESULT (STDMETHODCALLTYPE * GetService) (ma_IAudioClient2* pThis, const IID* const riid, void** pp); + + /* IAudioClient2 */ + HRESULT (STDMETHODCALLTYPE * IsOffloadCapable) (ma_IAudioClient2* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable); + HRESULT (STDMETHODCALLTYPE * SetClientProperties)(ma_IAudioClient2* pThis, const ma_AudioClientProperties* pProperties); + HRESULT (STDMETHODCALLTYPE * GetBufferSizeLimits)(ma_IAudioClient2* pThis, const WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration); +} ma_IAudioClient2Vtbl; +struct ma_IAudioClient2 +{ + ma_IAudioClient2Vtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IAudioClient2_QueryInterface(ma_IAudioClient2* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IAudioClient2_AddRef(ma_IAudioClient2* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IAudioClient2_Release(ma_IAudioClient2* pThis) { return pThis->lpVtbl->Release(pThis); } +static MA_INLINE HRESULT ma_IAudioClient2_Initialize(ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid) { return pThis->lpVtbl->Initialize(pThis, shareMode, streamFlags, bufferDuration, periodicity, pFormat, pAudioSessionGuid); } +static MA_INLINE HRESULT ma_IAudioClient2_GetBufferSize(ma_IAudioClient2* pThis, ma_uint32* pNumBufferFrames) { return pThis->lpVtbl->GetBufferSize(pThis, pNumBufferFrames); } +static MA_INLINE HRESULT ma_IAudioClient2_GetStreamLatency(ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pLatency) { return pThis->lpVtbl->GetStreamLatency(pThis, pLatency); } +static MA_INLINE HRESULT ma_IAudioClient2_GetCurrentPadding(ma_IAudioClient2* pThis, ma_uint32* pNumPaddingFrames) { return pThis->lpVtbl->GetCurrentPadding(pThis, pNumPaddingFrames); } +static MA_INLINE HRESULT ma_IAudioClient2_IsFormatSupported(ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, const WAVEFORMATEX* pFormat, WAVEFORMATEX** ppClosestMatch) { return pThis->lpVtbl->IsFormatSupported(pThis, shareMode, pFormat, ppClosestMatch); } +static MA_INLINE HRESULT ma_IAudioClient2_GetMixFormat(ma_IAudioClient2* pThis, WAVEFORMATEX** ppDeviceFormat) { return pThis->lpVtbl->GetMixFormat(pThis, ppDeviceFormat); } +static MA_INLINE HRESULT ma_IAudioClient2_GetDevicePeriod(ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod) { return pThis->lpVtbl->GetDevicePeriod(pThis, pDefaultDevicePeriod, pMinimumDevicePeriod); } +static MA_INLINE HRESULT ma_IAudioClient2_Start(ma_IAudioClient2* pThis) { return pThis->lpVtbl->Start(pThis); } +static MA_INLINE HRESULT ma_IAudioClient2_Stop(ma_IAudioClient2* pThis) { return pThis->lpVtbl->Stop(pThis); } +static MA_INLINE HRESULT ma_IAudioClient2_Reset(ma_IAudioClient2* pThis) { return pThis->lpVtbl->Reset(pThis); } +static MA_INLINE HRESULT ma_IAudioClient2_SetEventHandle(ma_IAudioClient2* pThis, HANDLE eventHandle) { return pThis->lpVtbl->SetEventHandle(pThis, eventHandle); } +static MA_INLINE HRESULT ma_IAudioClient2_GetService(ma_IAudioClient2* pThis, const IID* const riid, void** pp) { return pThis->lpVtbl->GetService(pThis, riid, pp); } +static MA_INLINE HRESULT ma_IAudioClient2_IsOffloadCapable(ma_IAudioClient2* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable) { return pThis->lpVtbl->IsOffloadCapable(pThis, category, pOffloadCapable); } +static MA_INLINE HRESULT ma_IAudioClient2_SetClientProperties(ma_IAudioClient2* pThis, const ma_AudioClientProperties* pProperties) { return pThis->lpVtbl->SetClientProperties(pThis, pProperties); } +static MA_INLINE HRESULT ma_IAudioClient2_GetBufferSizeLimits(ma_IAudioClient2* pThis, const WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration) { return pThis->lpVtbl->GetBufferSizeLimits(pThis, pFormat, eventDriven, pMinBufferDuration, pMaxBufferDuration); } + + +/* IAudioClient3 */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioClient3* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IAudioClient3* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IAudioClient3* pThis); + + /* IAudioClient */ + HRESULT (STDMETHODCALLTYPE * Initialize) (ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid); + HRESULT (STDMETHODCALLTYPE * GetBufferSize) (ma_IAudioClient3* pThis, ma_uint32* pNumBufferFrames); + HRESULT (STDMETHODCALLTYPE * GetStreamLatency) (ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pLatency); + HRESULT (STDMETHODCALLTYPE * GetCurrentPadding)(ma_IAudioClient3* pThis, ma_uint32* pNumPaddingFrames); + HRESULT (STDMETHODCALLTYPE * IsFormatSupported)(ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, const WAVEFORMATEX* pFormat, WAVEFORMATEX** ppClosestMatch); + HRESULT (STDMETHODCALLTYPE * GetMixFormat) (ma_IAudioClient3* pThis, WAVEFORMATEX** ppDeviceFormat); + HRESULT (STDMETHODCALLTYPE * GetDevicePeriod) (ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod); + HRESULT (STDMETHODCALLTYPE * Start) (ma_IAudioClient3* pThis); + HRESULT (STDMETHODCALLTYPE * Stop) (ma_IAudioClient3* pThis); + HRESULT (STDMETHODCALLTYPE * Reset) (ma_IAudioClient3* pThis); + HRESULT (STDMETHODCALLTYPE * SetEventHandle) (ma_IAudioClient3* pThis, HANDLE eventHandle); + HRESULT (STDMETHODCALLTYPE * GetService) (ma_IAudioClient3* pThis, const IID* const riid, void** pp); + + /* IAudioClient2 */ + HRESULT (STDMETHODCALLTYPE * IsOffloadCapable) (ma_IAudioClient3* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable); + HRESULT (STDMETHODCALLTYPE * SetClientProperties)(ma_IAudioClient3* pThis, const ma_AudioClientProperties* pProperties); + HRESULT (STDMETHODCALLTYPE * GetBufferSizeLimits)(ma_IAudioClient3* pThis, const WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration); + + /* IAudioClient3 */ + HRESULT (STDMETHODCALLTYPE * GetSharedModeEnginePeriod) (ma_IAudioClient3* pThis, const WAVEFORMATEX* pFormat, UINT32* pDefaultPeriodInFrames, UINT32* pFundamentalPeriodInFrames, UINT32* pMinPeriodInFrames, UINT32* pMaxPeriodInFrames); + HRESULT (STDMETHODCALLTYPE * GetCurrentSharedModeEnginePeriod)(ma_IAudioClient3* pThis, WAVEFORMATEX** ppFormat, UINT32* pCurrentPeriodInFrames); + HRESULT (STDMETHODCALLTYPE * InitializeSharedAudioStream) (ma_IAudioClient3* pThis, DWORD streamFlags, UINT32 periodInFrames, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid); +} ma_IAudioClient3Vtbl; +struct ma_IAudioClient3 +{ + ma_IAudioClient3Vtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IAudioClient3_QueryInterface(ma_IAudioClient3* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IAudioClient3_AddRef(ma_IAudioClient3* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IAudioClient3_Release(ma_IAudioClient3* pThis) { return pThis->lpVtbl->Release(pThis); } +static MA_INLINE HRESULT ma_IAudioClient3_Initialize(ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid) { return pThis->lpVtbl->Initialize(pThis, shareMode, streamFlags, bufferDuration, periodicity, pFormat, pAudioSessionGuid); } +static MA_INLINE HRESULT ma_IAudioClient3_GetBufferSize(ma_IAudioClient3* pThis, ma_uint32* pNumBufferFrames) { return pThis->lpVtbl->GetBufferSize(pThis, pNumBufferFrames); } +static MA_INLINE HRESULT ma_IAudioClient3_GetStreamLatency(ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pLatency) { return pThis->lpVtbl->GetStreamLatency(pThis, pLatency); } +static MA_INLINE HRESULT ma_IAudioClient3_GetCurrentPadding(ma_IAudioClient3* pThis, ma_uint32* pNumPaddingFrames) { return pThis->lpVtbl->GetCurrentPadding(pThis, pNumPaddingFrames); } +static MA_INLINE HRESULT ma_IAudioClient3_IsFormatSupported(ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, const WAVEFORMATEX* pFormat, WAVEFORMATEX** ppClosestMatch) { return pThis->lpVtbl->IsFormatSupported(pThis, shareMode, pFormat, ppClosestMatch); } +static MA_INLINE HRESULT ma_IAudioClient3_GetMixFormat(ma_IAudioClient3* pThis, WAVEFORMATEX** ppDeviceFormat) { return pThis->lpVtbl->GetMixFormat(pThis, ppDeviceFormat); } +static MA_INLINE HRESULT ma_IAudioClient3_GetDevicePeriod(ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod) { return pThis->lpVtbl->GetDevicePeriod(pThis, pDefaultDevicePeriod, pMinimumDevicePeriod); } +static MA_INLINE HRESULT ma_IAudioClient3_Start(ma_IAudioClient3* pThis) { return pThis->lpVtbl->Start(pThis); } +static MA_INLINE HRESULT ma_IAudioClient3_Stop(ma_IAudioClient3* pThis) { return pThis->lpVtbl->Stop(pThis); } +static MA_INLINE HRESULT ma_IAudioClient3_Reset(ma_IAudioClient3* pThis) { return pThis->lpVtbl->Reset(pThis); } +static MA_INLINE HRESULT ma_IAudioClient3_SetEventHandle(ma_IAudioClient3* pThis, HANDLE eventHandle) { return pThis->lpVtbl->SetEventHandle(pThis, eventHandle); } +static MA_INLINE HRESULT ma_IAudioClient3_GetService(ma_IAudioClient3* pThis, const IID* const riid, void** pp) { return pThis->lpVtbl->GetService(pThis, riid, pp); } +static MA_INLINE HRESULT ma_IAudioClient3_IsOffloadCapable(ma_IAudioClient3* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable) { return pThis->lpVtbl->IsOffloadCapable(pThis, category, pOffloadCapable); } +static MA_INLINE HRESULT ma_IAudioClient3_SetClientProperties(ma_IAudioClient3* pThis, const ma_AudioClientProperties* pProperties) { return pThis->lpVtbl->SetClientProperties(pThis, pProperties); } +static MA_INLINE HRESULT ma_IAudioClient3_GetBufferSizeLimits(ma_IAudioClient3* pThis, const WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration) { return pThis->lpVtbl->GetBufferSizeLimits(pThis, pFormat, eventDriven, pMinBufferDuration, pMaxBufferDuration); } +static MA_INLINE HRESULT ma_IAudioClient3_GetSharedModeEnginePeriod(ma_IAudioClient3* pThis, const WAVEFORMATEX* pFormat, UINT32* pDefaultPeriodInFrames, UINT32* pFundamentalPeriodInFrames, UINT32* pMinPeriodInFrames, UINT32* pMaxPeriodInFrames) { return pThis->lpVtbl->GetSharedModeEnginePeriod(pThis, pFormat, pDefaultPeriodInFrames, pFundamentalPeriodInFrames, pMinPeriodInFrames, pMaxPeriodInFrames); } +static MA_INLINE HRESULT ma_IAudioClient3_GetCurrentSharedModeEnginePeriod(ma_IAudioClient3* pThis, WAVEFORMATEX** ppFormat, UINT32* pCurrentPeriodInFrames) { return pThis->lpVtbl->GetCurrentSharedModeEnginePeriod(pThis, ppFormat, pCurrentPeriodInFrames); } +static MA_INLINE HRESULT ma_IAudioClient3_InitializeSharedAudioStream(ma_IAudioClient3* pThis, DWORD streamFlags, UINT32 periodInFrames, const WAVEFORMATEX* pFormat, const GUID* pAudioSessionGUID) { return pThis->lpVtbl->InitializeSharedAudioStream(pThis, streamFlags, periodInFrames, pFormat, pAudioSessionGUID); } + + +/* IAudioRenderClient */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioRenderClient* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IAudioRenderClient* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IAudioRenderClient* pThis); + + /* IAudioRenderClient */ + HRESULT (STDMETHODCALLTYPE * GetBuffer) (ma_IAudioRenderClient* pThis, ma_uint32 numFramesRequested, BYTE** ppData); + HRESULT (STDMETHODCALLTYPE * ReleaseBuffer)(ma_IAudioRenderClient* pThis, ma_uint32 numFramesWritten, DWORD dwFlags); +} ma_IAudioRenderClientVtbl; +struct ma_IAudioRenderClient +{ + ma_IAudioRenderClientVtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IAudioRenderClient_QueryInterface(ma_IAudioRenderClient* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IAudioRenderClient_AddRef(ma_IAudioRenderClient* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IAudioRenderClient_Release(ma_IAudioRenderClient* pThis) { return pThis->lpVtbl->Release(pThis); } +static MA_INLINE HRESULT ma_IAudioRenderClient_GetBuffer(ma_IAudioRenderClient* pThis, ma_uint32 numFramesRequested, BYTE** ppData) { return pThis->lpVtbl->GetBuffer(pThis, numFramesRequested, ppData); } +static MA_INLINE HRESULT ma_IAudioRenderClient_ReleaseBuffer(ma_IAudioRenderClient* pThis, ma_uint32 numFramesWritten, DWORD dwFlags) { return pThis->lpVtbl->ReleaseBuffer(pThis, numFramesWritten, dwFlags); } + + +/* IAudioCaptureClient */ +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioCaptureClient* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_IAudioCaptureClient* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_IAudioCaptureClient* pThis); + + /* IAudioRenderClient */ + HRESULT (STDMETHODCALLTYPE * GetBuffer) (ma_IAudioCaptureClient* pThis, BYTE** ppData, ma_uint32* pNumFramesToRead, DWORD* pFlags, ma_uint64* pDevicePosition, ma_uint64* pQPCPosition); + HRESULT (STDMETHODCALLTYPE * ReleaseBuffer) (ma_IAudioCaptureClient* pThis, ma_uint32 numFramesRead); + HRESULT (STDMETHODCALLTYPE * GetNextPacketSize)(ma_IAudioCaptureClient* pThis, ma_uint32* pNumFramesInNextPacket); +} ma_IAudioCaptureClientVtbl; +struct ma_IAudioCaptureClient +{ + ma_IAudioCaptureClientVtbl* lpVtbl; +}; +static MA_INLINE HRESULT ma_IAudioCaptureClient_QueryInterface(ma_IAudioCaptureClient* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); } +static MA_INLINE ULONG ma_IAudioCaptureClient_AddRef(ma_IAudioCaptureClient* pThis) { return pThis->lpVtbl->AddRef(pThis); } +static MA_INLINE ULONG ma_IAudioCaptureClient_Release(ma_IAudioCaptureClient* pThis) { return pThis->lpVtbl->Release(pThis); } +static MA_INLINE HRESULT ma_IAudioCaptureClient_GetBuffer(ma_IAudioCaptureClient* pThis, BYTE** ppData, ma_uint32* pNumFramesToRead, DWORD* pFlags, ma_uint64* pDevicePosition, ma_uint64* pQPCPosition) { return pThis->lpVtbl->GetBuffer(pThis, ppData, pNumFramesToRead, pFlags, pDevicePosition, pQPCPosition); } +static MA_INLINE HRESULT ma_IAudioCaptureClient_ReleaseBuffer(ma_IAudioCaptureClient* pThis, ma_uint32 numFramesRead) { return pThis->lpVtbl->ReleaseBuffer(pThis, numFramesRead); } +static MA_INLINE HRESULT ma_IAudioCaptureClient_GetNextPacketSize(ma_IAudioCaptureClient* pThis, ma_uint32* pNumFramesInNextPacket) { return pThis->lpVtbl->GetNextPacketSize(pThis, pNumFramesInNextPacket); } + +#ifndef MA_WIN32_DESKTOP +#include <mmdeviceapi.h> +typedef struct ma_completion_handler_uwp ma_completion_handler_uwp; + +typedef struct +{ + /* IUnknown */ + HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_completion_handler_uwp* pThis, const IID* const riid, void** ppObject); + ULONG (STDMETHODCALLTYPE * AddRef) (ma_completion_handler_uwp* pThis); + ULONG (STDMETHODCALLTYPE * Release) (ma_completion_handler_uwp* pThis); + + /* IActivateAudioInterfaceCompletionHandler */ + HRESULT (STDMETHODCALLTYPE * ActivateCompleted)(ma_completion_handler_uwp* pThis, ma_IActivateAudioInterfaceAsyncOperation* pActivateOperation); +} ma_completion_handler_uwp_vtbl; +struct ma_completion_handler_uwp +{ + ma_completion_handler_uwp_vtbl* lpVtbl; + ma_uint32 counter; + HANDLE hEvent; +}; + +static HRESULT STDMETHODCALLTYPE ma_completion_handler_uwp_QueryInterface(ma_completion_handler_uwp* pThis, const IID* const riid, void** ppObject) +{ + /* + We need to "implement" IAgileObject which is just an indicator that's used internally by WASAPI for some multithreading management. To + "implement" this, we just make sure we return pThis when the IAgileObject is requested. + */ + if (!ma_is_guid_equal(riid, &MA_IID_IUnknown) && !ma_is_guid_equal(riid, &MA_IID_IActivateAudioInterfaceCompletionHandler) && !ma_is_guid_equal(riid, &MA_IID_IAgileObject)) { + *ppObject = NULL; + return E_NOINTERFACE; + } + + /* Getting here means the IID is IUnknown or IMMNotificationClient. */ + *ppObject = (void*)pThis; + ((ma_completion_handler_uwp_vtbl*)pThis->lpVtbl)->AddRef(pThis); + return S_OK; +} + +static ULONG STDMETHODCALLTYPE ma_completion_handler_uwp_AddRef(ma_completion_handler_uwp* pThis) +{ + return (ULONG)ma_atomic_increment_32(&pThis->counter); +} + +static ULONG STDMETHODCALLTYPE ma_completion_handler_uwp_Release(ma_completion_handler_uwp* pThis) +{ + ma_uint32 newRefCount = ma_atomic_decrement_32(&pThis->counter); + if (newRefCount == 0) { + return 0; /* We don't free anything here because we never allocate the object on the heap. */ + } + + return (ULONG)newRefCount; +} + +static HRESULT STDMETHODCALLTYPE ma_completion_handler_uwp_ActivateCompleted(ma_completion_handler_uwp* pThis, ma_IActivateAudioInterfaceAsyncOperation* pActivateOperation) +{ + (void)pActivateOperation; + SetEvent(pThis->hEvent); + return S_OK; +} + + +static ma_completion_handler_uwp_vtbl g_maCompletionHandlerVtblInstance = { + ma_completion_handler_uwp_QueryInterface, + ma_completion_handler_uwp_AddRef, + ma_completion_handler_uwp_Release, + ma_completion_handler_uwp_ActivateCompleted +}; + +static ma_result ma_completion_handler_uwp_init(ma_completion_handler_uwp* pHandler) +{ + MA_ASSERT(pHandler != NULL); + MA_ZERO_OBJECT(pHandler); + + pHandler->lpVtbl = &g_maCompletionHandlerVtblInstance; + pHandler->counter = 1; + pHandler->hEvent = CreateEventW(NULL, FALSE, FALSE, NULL); + if (pHandler->hEvent == NULL) { + return ma_result_from_GetLastError(GetLastError()); + } + + return MA_SUCCESS; +} + +static void ma_completion_handler_uwp_uninit(ma_completion_handler_uwp* pHandler) +{ + if (pHandler->hEvent != NULL) { + CloseHandle(pHandler->hEvent); + } +} + +static void ma_completion_handler_uwp_wait(ma_completion_handler_uwp* pHandler) +{ + WaitForSingleObject(pHandler->hEvent, INFINITE); +} +#endif /* !MA_WIN32_DESKTOP */ + +/* We need a virtual table for our notification client object that's used for detecting changes to the default device. */ +#ifdef MA_WIN32_DESKTOP +static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_QueryInterface(ma_IMMNotificationClient* pThis, const IID* const riid, void** ppObject) +{ + /* + We care about two interfaces - IUnknown and IMMNotificationClient. If the requested IID is something else + we just return E_NOINTERFACE. Otherwise we need to increment the reference counter and return S_OK. + */ + if (!ma_is_guid_equal(riid, &MA_IID_IUnknown) && !ma_is_guid_equal(riid, &MA_IID_IMMNotificationClient)) { + *ppObject = NULL; + return E_NOINTERFACE; + } + + /* Getting here means the IID is IUnknown or IMMNotificationClient. */ + *ppObject = (void*)pThis; + ((ma_IMMNotificationClientVtbl*)pThis->lpVtbl)->AddRef(pThis); + return S_OK; +} + +static ULONG STDMETHODCALLTYPE ma_IMMNotificationClient_AddRef(ma_IMMNotificationClient* pThis) +{ + return (ULONG)ma_atomic_increment_32(&pThis->counter); +} + +static ULONG STDMETHODCALLTYPE ma_IMMNotificationClient_Release(ma_IMMNotificationClient* pThis) +{ + ma_uint32 newRefCount = ma_atomic_decrement_32(&pThis->counter); + if (newRefCount == 0) { + return 0; /* We don't free anything here because we never allocate the object on the heap. */ + } + + return (ULONG)newRefCount; +} + + +static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDeviceStateChanged(ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID, DWORD dwNewState) +{ +#ifdef MA_DEBUG_OUTPUT + printf("IMMNotificationClient_OnDeviceStateChanged(pDeviceID=%S, dwNewState=%u)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)", (unsigned int)dwNewState); +#endif + + (void)pThis; + (void)pDeviceID; + (void)dwNewState; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDeviceAdded(ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID) +{ +#ifdef MA_DEBUG_OUTPUT + printf("IMMNotificationClient_OnDeviceAdded(pDeviceID=%S)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)"); +#endif + + /* We don't need to worry about this event for our purposes. */ + (void)pThis; + (void)pDeviceID; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDeviceRemoved(ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID) +{ +#ifdef MA_DEBUG_OUTPUT + printf("IMMNotificationClient_OnDeviceRemoved(pDeviceID=%S)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)"); +#endif + + /* We don't need to worry about this event for our purposes. */ + (void)pThis; + (void)pDeviceID; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDefaultDeviceChanged(ma_IMMNotificationClient* pThis, ma_EDataFlow dataFlow, ma_ERole role, LPCWSTR pDefaultDeviceID) +{ +#ifdef MA_DEBUG_OUTPUT + printf("IMMNotificationClient_OnDefaultDeviceChanged(dataFlow=%d, role=%d, pDefaultDeviceID=%S)\n", dataFlow, role, (pDefaultDeviceID != NULL) ? pDefaultDeviceID : L"(NULL)"); +#endif + + /* We only ever use the eConsole role in miniaudio. */ + if (role != ma_eConsole) { + return S_OK; + } + + /* We only care about devices with the same data flow and role as the current device. */ + if ((pThis->pDevice->type == ma_device_type_playback && dataFlow != ma_eRender) || + (pThis->pDevice->type == ma_device_type_capture && dataFlow != ma_eCapture)) { + return S_OK; + } + + /* Don't do automatic stream routing if we're not allowed. */ + if ((dataFlow == ma_eRender && pThis->pDevice->wasapi.allowPlaybackAutoStreamRouting == MA_FALSE) || + (dataFlow == ma_eCapture && pThis->pDevice->wasapi.allowCaptureAutoStreamRouting == MA_FALSE)) { + return S_OK; + } + + /* + Not currently supporting automatic stream routing in exclusive mode. This is not working correctly on my machine due to + AUDCLNT_E_DEVICE_IN_USE errors when reinitializing the device. If this is a bug in miniaudio, we can try re-enabling this once + it's fixed. + */ + if ((dataFlow == ma_eRender && pThis->pDevice->playback.shareMode == ma_share_mode_exclusive) || + (dataFlow == ma_eCapture && pThis->pDevice->capture.shareMode == ma_share_mode_exclusive)) { + return S_OK; + } + + /* + We don't change the device here - we change it in the worker thread to keep synchronization simple. To do this I'm just setting a flag to + indicate that the default device has changed. Loopback devices are treated as capture devices so we need to do a bit of a dance to handle + that properly. + */ + if (dataFlow == ma_eRender && pThis->pDevice->type != ma_device_type_loopback) { + ma_atomic_exchange_32(&pThis->pDevice->wasapi.hasDefaultPlaybackDeviceChanged, MA_TRUE); + } + if (dataFlow == ma_eCapture || pThis->pDevice->type == ma_device_type_loopback) { + ma_atomic_exchange_32(&pThis->pDevice->wasapi.hasDefaultCaptureDeviceChanged, MA_TRUE); + } + + (void)pDefaultDeviceID; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnPropertyValueChanged(ma_IMMNotificationClient* pThis, LPCWSTR pDeviceID, const PROPERTYKEY key) +{ +#ifdef MA_DEBUG_OUTPUT + printf("IMMNotificationClient_OnPropertyValueChanged(pDeviceID=%S)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)"); +#endif + + (void)pThis; + (void)pDeviceID; + (void)key; + return S_OK; +} + +static ma_IMMNotificationClientVtbl g_maNotificationCientVtbl = { + ma_IMMNotificationClient_QueryInterface, + ma_IMMNotificationClient_AddRef, + ma_IMMNotificationClient_Release, + ma_IMMNotificationClient_OnDeviceStateChanged, + ma_IMMNotificationClient_OnDeviceAdded, + ma_IMMNotificationClient_OnDeviceRemoved, + ma_IMMNotificationClient_OnDefaultDeviceChanged, + ma_IMMNotificationClient_OnPropertyValueChanged +}; +#endif /* MA_WIN32_DESKTOP */ + +#ifdef MA_WIN32_DESKTOP +typedef ma_IMMDevice ma_WASAPIDeviceInterface; +#else +typedef ma_IUnknown ma_WASAPIDeviceInterface; +#endif + + + +static ma_bool32 ma_context_is_device_id_equal__wasapi(ma_context* pContext, const ma_device_id* pID0, const ma_device_id* pID1) +{ + MA_ASSERT(pContext != NULL); + MA_ASSERT(pID0 != NULL); + MA_ASSERT(pID1 != NULL); + (void)pContext; + + return memcmp(pID0->wasapi, pID1->wasapi, sizeof(pID0->wasapi)) == 0; +} + +static void ma_set_device_info_from_WAVEFORMATEX(const WAVEFORMATEX* pWF, ma_device_info* pInfo) +{ + MA_ASSERT(pWF != NULL); + MA_ASSERT(pInfo != NULL); + + pInfo->formatCount = 1; + pInfo->formats[0] = ma_format_from_WAVEFORMATEX(pWF); + pInfo->minChannels = pWF->nChannels; + pInfo->maxChannels = pWF->nChannels; + pInfo->minSampleRate = pWF->nSamplesPerSec; + pInfo->maxSampleRate = pWF->nSamplesPerSec; +} + +static ma_result ma_context_get_device_info_from_IAudioClient__wasapi(ma_context* pContext, /*ma_IMMDevice**/void* pMMDevice, ma_IAudioClient* pAudioClient, ma_share_mode shareMode, ma_device_info* pInfo) +{ + MA_ASSERT(pAudioClient != NULL); + MA_ASSERT(pInfo != NULL); + + /* We use a different technique to retrieve the device information depending on whether or not we are using shared or exclusive mode. */ + if (shareMode == ma_share_mode_shared) { + /* Shared Mode. We use GetMixFormat() here. */ + WAVEFORMATEX* pWF = NULL; + HRESULT hr = ma_IAudioClient_GetMixFormat((ma_IAudioClient*)pAudioClient, (WAVEFORMATEX**)&pWF); + if (SUCCEEDED(hr)) { + ma_set_device_info_from_WAVEFORMATEX(pWF, pInfo); + return MA_SUCCESS; + } else { + return ma_context_post_error(pContext, NULL, MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to retrieve mix format for device info retrieval.", ma_result_from_HRESULT(hr)); + } + } else { + /* Exlcusive Mode. We repeatedly call IsFormatSupported() here. This is not currently support on UWP. */ +#ifdef MA_WIN32_DESKTOP + /* + The first thing to do is get the format from PKEY_AudioEngine_DeviceFormat. This should give us a channel count we assume is + correct which will simplify our searching. + */ + ma_IPropertyStore *pProperties; + HRESULT hr = ma_IMMDevice_OpenPropertyStore((ma_IMMDevice*)pMMDevice, STGM_READ, &pProperties); + if (SUCCEEDED(hr)) { + PROPVARIANT var; + ma_PropVariantInit(&var); + + hr = ma_IPropertyStore_GetValue(pProperties, &MA_PKEY_AudioEngine_DeviceFormat, &var); + if (SUCCEEDED(hr)) { + WAVEFORMATEX* pWF = (WAVEFORMATEX*)var.blob.pBlobData; + ma_set_device_info_from_WAVEFORMATEX(pWF, pInfo); + + /* + In my testing, the format returned by PKEY_AudioEngine_DeviceFormat is suitable for exclusive mode so we check this format + first. If this fails, fall back to a search. + */ + hr = ma_IAudioClient_IsFormatSupported((ma_IAudioClient*)pAudioClient, MA_AUDCLNT_SHAREMODE_EXCLUSIVE, pWF, NULL); + ma_PropVariantClear(pContext, &var); + + if (FAILED(hr)) { + /* + The format returned by PKEY_AudioEngine_DeviceFormat is not supported, so fall back to a search. We assume the channel + count returned by MA_PKEY_AudioEngine_DeviceFormat is valid and correct. For simplicity we're only returning one format. + */ + ma_uint32 channels = pInfo->minChannels; + ma_format formatsToSearch[] = { + ma_format_s16, + ma_format_s24, + /*ma_format_s24_32,*/ + ma_format_f32, + ma_format_s32, + ma_format_u8 + }; + ma_channel defaultChannelMap[MA_MAX_CHANNELS]; + WAVEFORMATEXTENSIBLE wf; + ma_bool32 found; + ma_uint32 iFormat; + + ma_get_standard_channel_map(ma_standard_channel_map_microsoft, channels, defaultChannelMap); + + MA_ZERO_OBJECT(&wf); + wf.Format.cbSize = sizeof(wf); + wf.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; + wf.Format.nChannels = (WORD)channels; + wf.dwChannelMask = ma_channel_map_to_channel_mask__win32(defaultChannelMap, channels); + + found = MA_FALSE; + for (iFormat = 0; iFormat < ma_countof(formatsToSearch); ++iFormat) { + ma_format format = formatsToSearch[iFormat]; + ma_uint32 iSampleRate; + + wf.Format.wBitsPerSample = (WORD)ma_get_bytes_per_sample(format)*8; + wf.Format.nBlockAlign = (wf.Format.nChannels * wf.Format.wBitsPerSample) / 8; + wf.Format.nAvgBytesPerSec = wf.Format.nBlockAlign * wf.Format.nSamplesPerSec; + wf.Samples.wValidBitsPerSample = /*(format == ma_format_s24_32) ? 24 :*/ wf.Format.wBitsPerSample; + if (format == ma_format_f32) { + wf.SubFormat = MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT; + } else { + wf.SubFormat = MA_GUID_KSDATAFORMAT_SUBTYPE_PCM; + } + + for (iSampleRate = 0; iSampleRate < ma_countof(g_maStandardSampleRatePriorities); ++iSampleRate) { + wf.Format.nSamplesPerSec = g_maStandardSampleRatePriorities[iSampleRate]; + + hr = ma_IAudioClient_IsFormatSupported((ma_IAudioClient*)pAudioClient, MA_AUDCLNT_SHAREMODE_EXCLUSIVE, (WAVEFORMATEX*)&wf, NULL); + if (SUCCEEDED(hr)) { + ma_set_device_info_from_WAVEFORMATEX((WAVEFORMATEX*)&wf, pInfo); + found = MA_TRUE; + break; + } + } + + if (found) { + break; + } + } + + if (!found) { + ma_IPropertyStore_Release(pProperties); + return ma_context_post_error(pContext, NULL, MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to find suitable device format for device info retrieval.", MA_FORMAT_NOT_SUPPORTED); + } + } + } else { + ma_IPropertyStore_Release(pProperties); + return ma_context_post_error(pContext, NULL, MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to retrieve device format for device info retrieval.", ma_result_from_HRESULT(hr)); + } + + ma_IPropertyStore_Release(pProperties); + } else { + return ma_context_post_error(pContext, NULL, MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to open property store for device info retrieval.", ma_result_from_HRESULT(hr)); + } + + return MA_SUCCESS; +#else + /* Exclusive mode not fully supported in UWP right now. */ + return MA_ERROR; +#endif + } +} + +#ifdef MA_WIN32_DESKTOP +static ma_EDataFlow ma_device_type_to_EDataFlow(ma_device_type deviceType) +{ + if (deviceType == ma_device_type_playback) {