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Add support for setting a processing callback for ma_engine.

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This is optional and is fired at the end of each call to
ma_engine_read_process_pcm_frames(). The callback will be passed the
processed audio data so they can do their own processing such as
outputting to a file or whatnot.

The callback is configured via the engine config.
This commit is contained in:
David Reid
2023-06-03 16:20:16 +10:00
parent e7912fa242
commit a0b952eea6
1 changed files with 29 additions and 1 deletions
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miniaudio.h
+29 -1
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@@ -11136,6 +11136,8 @@ typedef ma_sound ma_sound_group;
MA_API ma_sound_group_config ma_sound_group_config_init(void); /* Deprecated. Will be removed in version 0.12. Use ma_sound_config_2() instead. */
MA_API ma_sound_group_config ma_sound_group_config_init_2(ma_engine* pEngine); /* Will be renamed to ma_sound_config_init() in version 0.12. */
typedef void (* ma_engine_process_proc)(void* pUserData, void* pFramesOut, ma_uint64 frameCount);
typedef struct
{
#if !defined(MA_NO_RESOURCE_MANAGER)
@@ -11161,6 +11163,8 @@ typedef struct
ma_bool32 noDevice; /* When set to true, don't create a default device. ma_engine_read_pcm_frames() can be called manually to read data. */
ma_mono_expansion_mode monoExpansionMode; /* Controls how the mono channel should be expanded to other channels when spatialization is disabled on a sound. */
ma_vfs* pResourceManagerVFS; /* A pointer to a pre-allocated VFS object to use with the resource manager. This is ignored if pResourceManager is not NULL. */
ma_engine_process_proc onProcess; /* Fired at the end of each call to ma_engine_read_pcm_frames(). For engine's that manage their own internal device (the default configuration), this will be fired from the audio thread, and you do not need to call ma_engine_read_pcm_frames() manually in order to trigger this. */
void* pProcessUserData; /* User data that's passed into onProcess. */
} ma_engine_config;
MA_API ma_engine_config ma_engine_config_init(void);
@@ -11188,6 +11192,8 @@ struct ma_engine
ma_uint32 gainSmoothTimeInFrames; /* The number of frames to interpolate the gain of spatialized sounds across. */
ma_uint32 defaultVolumeSmoothTimeInPCMFrames;
ma_mono_expansion_mode monoExpansionMode;
ma_engine_process_proc onProcess;
void* pProcessUserData;
};
MA_API ma_result ma_engine_init(const ma_engine_config* pConfig, ma_engine* pEngine);
@@ -74194,6 +74200,8 @@ MA_API ma_result ma_engine_init(const ma_engine_config* pConfig, ma_engine* pEng
pEngine->monoExpansionMode = engineConfig.monoExpansionMode;
pEngine->defaultVolumeSmoothTimeInPCMFrames = engineConfig.defaultVolumeSmoothTimeInPCMFrames;
pEngine->onProcess = engineConfig.onProcess;
pEngine->pProcessUserData = engineConfig.pProcessUserData;
ma_allocation_callbacks_init_copy(&pEngine->allocationCallbacks, &engineConfig.allocationCallbacks);
#if !defined(MA_NO_RESOURCE_MANAGER)
@@ -74492,7 +74500,27 @@ MA_API void ma_engine_uninit(ma_engine* pEngine)
MA_API ma_result ma_engine_read_pcm_frames(ma_engine* pEngine, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
return ma_node_graph_read_pcm_frames(&pEngine->nodeGraph, pFramesOut, frameCount, pFramesRead);
ma_result result;
ma_uint64 framesRead = 0;
if (pFramesRead != NULL) {
*pFramesRead = 0;
}
result = ma_node_graph_read_pcm_frames(&pEngine->nodeGraph, pFramesOut, frameCount, &framesRead);
if (result != MA_SUCCESS) {
return result;
}
if (pFramesRead != NULL) {
*pFramesRead = framesRead;
}
if (pEngine->onProcess) {
pEngine->onProcess(pEngine->pProcessUserData, pFramesOut, framesRead);
}
return MA_SUCCESS;
}
MA_API ma_node_graph* ma_engine_get_node_graph(ma_engine* pEngine)