From 8ce4857bcdf2d11eecd77e1aaf3837d1c45d29fd Mon Sep 17 00:00:00 2001 From: David Reid Date: Sat, 25 Mar 2023 12:05:28 +1000 Subject: [PATCH] Add support for using `ma_pcm_rb` as a data source. --- CHANGES.md | 1 + miniaudio.h | 520 +++++++++++++++++++++++++++++++++------------------- 2 files changed, 330 insertions(+), 191 deletions(-) diff --git a/CHANGES.md b/CHANGES.md index 6bc0f576..011b85e9 100644 --- a/CHANGES.md +++ b/CHANGES.md @@ -2,6 +2,7 @@ v0.11.12 - TBD ===================== * Fix some pedantic warnings when compiling with GCC. * Fix some crashes with the WAV decoder when loading an invalid file. +* Add support for using `ma_pcm_rb` as a data source. * Silence some C89 compatibility warnings with Clang. * The `pBytesRead` parameter of the VFS onRead callback is now pre-initialized to zero. diff --git a/miniaudio.h b/miniaudio.h index 3042d363..65992ca0 100644 --- a/miniaudio.h +++ b/miniaudio.h @@ -5732,6 +5732,197 @@ MA_API ma_uint64 ma_convert_frames(void* pOut, ma_uint64 frameCountOut, ma_forma 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); +/************************************************************************************************************************************************************ + +Data Source + +************************************************************************************************************************************************************/ +typedef void ma_data_source; + +#define MA_DATA_SOURCE_SELF_MANAGED_RANGE_AND_LOOP_POINT 0x00000001 + +typedef struct +{ + ma_result (* onRead)(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead); + ma_result (* onSeek)(ma_data_source* pDataSource, ma_uint64 frameIndex); + ma_result (* onGetDataFormat)(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap); + ma_result (* onGetCursor)(ma_data_source* pDataSource, ma_uint64* pCursor); + ma_result (* onGetLength)(ma_data_source* pDataSource, ma_uint64* pLength); + ma_result (* onSetLooping)(ma_data_source* pDataSource, ma_bool32 isLooping); + ma_uint32 flags; +} ma_data_source_vtable; + +typedef ma_data_source* (* ma_data_source_get_next_proc)(ma_data_source* pDataSource); + +typedef struct +{ + const ma_data_source_vtable* vtable; +} ma_data_source_config; + +MA_API ma_data_source_config ma_data_source_config_init(void); + + +typedef struct +{ + const ma_data_source_vtable* vtable; + ma_uint64 rangeBegInFrames; + ma_uint64 rangeEndInFrames; /* Set to -1 for unranged (default). */ + ma_uint64 loopBegInFrames; /* Relative to rangeBegInFrames. */ + ma_uint64 loopEndInFrames; /* Relative to rangeBegInFrames. Set to -1 for the end of the range. */ + ma_data_source* pCurrent; /* When non-NULL, the data source being initialized will act as a proxy and will route all operations to pCurrent. Used in conjunction with pNext/onGetNext for seamless chaining. */ + ma_data_source* pNext; /* When set to NULL, onGetNext will be used. */ + ma_data_source_get_next_proc onGetNext; /* Will be used when pNext is NULL. If both are NULL, no next will be used. */ + MA_ATOMIC(4, ma_bool32) isLooping; +} ma_data_source_base; + +MA_API ma_result ma_data_source_init(const ma_data_source_config* pConfig, ma_data_source* pDataSource); +MA_API void ma_data_source_uninit(ma_data_source* pDataSource); +MA_API ma_result ma_data_source_read_pcm_frames(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead); /* Must support pFramesOut = NULL in which case a forward seek should be performed. */ +MA_API ma_result ma_data_source_seek_pcm_frames(ma_data_source* pDataSource, ma_uint64 frameCount, ma_uint64* pFramesSeeked); /* Can only seek forward. Equivalent to ma_data_source_read_pcm_frames(pDataSource, NULL, frameCount, &framesRead); */ +MA_API ma_result ma_data_source_seek_to_pcm_frame(ma_data_source* pDataSource, ma_uint64 frameIndex); +MA_API ma_result ma_data_source_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap); +MA_API ma_result ma_data_source_get_cursor_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pCursor); +MA_API ma_result ma_data_source_get_length_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pLength); /* Returns MA_NOT_IMPLEMENTED if the length is unknown or cannot be determined. Decoders can return this. */ +MA_API ma_result ma_data_source_get_cursor_in_seconds(ma_data_source* pDataSource, float* pCursor); +MA_API ma_result ma_data_source_get_length_in_seconds(ma_data_source* pDataSource, float* pLength); +MA_API ma_result ma_data_source_set_looping(ma_data_source* pDataSource, ma_bool32 isLooping); +MA_API ma_bool32 ma_data_source_is_looping(const ma_data_source* pDataSource); +MA_API ma_result ma_data_source_set_range_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 rangeBegInFrames, ma_uint64 rangeEndInFrames); +MA_API void ma_data_source_get_range_in_pcm_frames(const ma_data_source* pDataSource, ma_uint64* pRangeBegInFrames, ma_uint64* pRangeEndInFrames); +MA_API ma_result ma_data_source_set_loop_point_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 loopBegInFrames, ma_uint64 loopEndInFrames); +MA_API void ma_data_source_get_loop_point_in_pcm_frames(const ma_data_source* pDataSource, ma_uint64* pLoopBegInFrames, ma_uint64* pLoopEndInFrames); +MA_API ma_result ma_data_source_set_current(ma_data_source* pDataSource, ma_data_source* pCurrentDataSource); +MA_API ma_data_source* ma_data_source_get_current(const ma_data_source* pDataSource); +MA_API ma_result ma_data_source_set_next(ma_data_source* pDataSource, ma_data_source* pNextDataSource); +MA_API ma_data_source* ma_data_source_get_next(const ma_data_source* pDataSource); +MA_API ma_result ma_data_source_set_next_callback(ma_data_source* pDataSource, ma_data_source_get_next_proc onGetNext); +MA_API ma_data_source_get_next_proc ma_data_source_get_next_callback(const ma_data_source* pDataSource); + + +typedef struct +{ + ma_data_source_base ds; + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + ma_uint64 cursor; + ma_uint64 sizeInFrames; + const void* pData; +} ma_audio_buffer_ref; + +MA_API ma_result ma_audio_buffer_ref_init(ma_format format, ma_uint32 channels, const void* pData, ma_uint64 sizeInFrames, ma_audio_buffer_ref* pAudioBufferRef); +MA_API void ma_audio_buffer_ref_uninit(ma_audio_buffer_ref* pAudioBufferRef); +MA_API ma_result ma_audio_buffer_ref_set_data(ma_audio_buffer_ref* pAudioBufferRef, const void* pData, ma_uint64 sizeInFrames); +MA_API ma_uint64 ma_audio_buffer_ref_read_pcm_frames(ma_audio_buffer_ref* pAudioBufferRef, void* pFramesOut, ma_uint64 frameCount, ma_bool32 loop); +MA_API ma_result ma_audio_buffer_ref_seek_to_pcm_frame(ma_audio_buffer_ref* pAudioBufferRef, ma_uint64 frameIndex); +MA_API ma_result ma_audio_buffer_ref_map(ma_audio_buffer_ref* pAudioBufferRef, void** ppFramesOut, ma_uint64* pFrameCount); +MA_API ma_result ma_audio_buffer_ref_unmap(ma_audio_buffer_ref* pAudioBufferRef, ma_uint64 frameCount); /* Returns MA_AT_END if the end has been reached. This should be considered successful. */ +MA_API ma_bool32 ma_audio_buffer_ref_at_end(const ma_audio_buffer_ref* pAudioBufferRef); +MA_API ma_result ma_audio_buffer_ref_get_cursor_in_pcm_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pCursor); +MA_API ma_result ma_audio_buffer_ref_get_length_in_pcm_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pLength); +MA_API ma_result ma_audio_buffer_ref_get_available_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pAvailableFrames); + + + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_uint32 sampleRate; + ma_uint64 sizeInFrames; + const void* pData; /* If set to NULL, will allocate a block of memory for you. */ + ma_allocation_callbacks allocationCallbacks; +} ma_audio_buffer_config; + +MA_API ma_audio_buffer_config ma_audio_buffer_config_init(ma_format format, ma_uint32 channels, ma_uint64 sizeInFrames, const void* pData, const ma_allocation_callbacks* pAllocationCallbacks); + +typedef struct +{ + ma_audio_buffer_ref ref; + ma_allocation_callbacks allocationCallbacks; + ma_bool32 ownsData; /* Used to control whether or not miniaudio owns the data buffer. If set to true, pData will be freed in ma_audio_buffer_uninit(). */ + ma_uint8 _pExtraData[1]; /* For allocating a buffer with the memory located directly after the other memory of the structure. */ +} ma_audio_buffer; + +MA_API ma_result ma_audio_buffer_init(const ma_audio_buffer_config* pConfig, ma_audio_buffer* pAudioBuffer); +MA_API ma_result ma_audio_buffer_init_copy(const ma_audio_buffer_config* pConfig, ma_audio_buffer* pAudioBuffer); +MA_API ma_result ma_audio_buffer_alloc_and_init(const ma_audio_buffer_config* pConfig, ma_audio_buffer** ppAudioBuffer); /* Always copies the data. Doesn't make sense to use this otherwise. Use ma_audio_buffer_uninit_and_free() to uninit. */ +MA_API void ma_audio_buffer_uninit(ma_audio_buffer* pAudioBuffer); +MA_API void ma_audio_buffer_uninit_and_free(ma_audio_buffer* pAudioBuffer); +MA_API ma_uint64 ma_audio_buffer_read_pcm_frames(ma_audio_buffer* pAudioBuffer, void* pFramesOut, ma_uint64 frameCount, ma_bool32 loop); +MA_API ma_result ma_audio_buffer_seek_to_pcm_frame(ma_audio_buffer* pAudioBuffer, ma_uint64 frameIndex); +MA_API ma_result ma_audio_buffer_map(ma_audio_buffer* pAudioBuffer, void** ppFramesOut, ma_uint64* pFrameCount); +MA_API ma_result ma_audio_buffer_unmap(ma_audio_buffer* pAudioBuffer, ma_uint64 frameCount); /* Returns MA_AT_END if the end has been reached. This should be considered successful. */ +MA_API ma_bool32 ma_audio_buffer_at_end(const ma_audio_buffer* pAudioBuffer); +MA_API ma_result ma_audio_buffer_get_cursor_in_pcm_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pCursor); +MA_API ma_result ma_audio_buffer_get_length_in_pcm_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pLength); +MA_API ma_result ma_audio_buffer_get_available_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pAvailableFrames); + + +/* +Paged Audio Buffer +================== +A paged audio buffer is made up of a linked list of pages. It's expandable, but not shrinkable. It +can be used for cases where audio data is streamed in asynchronously while allowing data to be read +at the same time. + +This is lock-free, but not 100% thread safe. You can append a page and read from the buffer across +simultaneously across different threads, however only one thread at a time can append, and only one +thread at a time can read and seek. +*/ +typedef struct ma_paged_audio_buffer_page ma_paged_audio_buffer_page; +struct ma_paged_audio_buffer_page +{ + MA_ATOMIC(MA_SIZEOF_PTR, ma_paged_audio_buffer_page*) pNext; + ma_uint64 sizeInFrames; + ma_uint8 pAudioData[1]; +}; + +typedef struct +{ + ma_format format; + ma_uint32 channels; + ma_paged_audio_buffer_page head; /* Dummy head for the lock-free algorithm. Always has a size of 0. */ + MA_ATOMIC(MA_SIZEOF_PTR, ma_paged_audio_buffer_page*) pTail; /* Never null. Initially set to &head. */ +} ma_paged_audio_buffer_data; + +MA_API ma_result ma_paged_audio_buffer_data_init(ma_format format, ma_uint32 channels, ma_paged_audio_buffer_data* pData); +MA_API void ma_paged_audio_buffer_data_uninit(ma_paged_audio_buffer_data* pData, const ma_allocation_callbacks* pAllocationCallbacks); +MA_API ma_paged_audio_buffer_page* ma_paged_audio_buffer_data_get_head(ma_paged_audio_buffer_data* pData); +MA_API ma_paged_audio_buffer_page* ma_paged_audio_buffer_data_get_tail(ma_paged_audio_buffer_data* pData); +MA_API ma_result ma_paged_audio_buffer_data_get_length_in_pcm_frames(ma_paged_audio_buffer_data* pData, ma_uint64* pLength); +MA_API ma_result ma_paged_audio_buffer_data_allocate_page(ma_paged_audio_buffer_data* pData, ma_uint64 pageSizeInFrames, const void* pInitialData, const ma_allocation_callbacks* pAllocationCallbacks, ma_paged_audio_buffer_page** ppPage); +MA_API ma_result ma_paged_audio_buffer_data_free_page(ma_paged_audio_buffer_data* pData, ma_paged_audio_buffer_page* pPage, const ma_allocation_callbacks* pAllocationCallbacks); +MA_API ma_result ma_paged_audio_buffer_data_append_page(ma_paged_audio_buffer_data* pData, ma_paged_audio_buffer_page* pPage); +MA_API ma_result ma_paged_audio_buffer_data_allocate_and_append_page(ma_paged_audio_buffer_data* pData, ma_uint32 pageSizeInFrames, const void* pInitialData, const ma_allocation_callbacks* pAllocationCallbacks); + + +typedef struct +{ + ma_paged_audio_buffer_data* pData; /* Must not be null. */ +} ma_paged_audio_buffer_config; + +MA_API ma_paged_audio_buffer_config ma_paged_audio_buffer_config_init(ma_paged_audio_buffer_data* pData); + + +typedef struct +{ + ma_data_source_base ds; + ma_paged_audio_buffer_data* pData; /* Audio data is read from here. Cannot be null. */ + ma_paged_audio_buffer_page* pCurrent; + ma_uint64 relativeCursor; /* Relative to the current page. */ + ma_uint64 absoluteCursor; +} ma_paged_audio_buffer; + +MA_API ma_result ma_paged_audio_buffer_init(const ma_paged_audio_buffer_config* pConfig, ma_paged_audio_buffer* pPagedAudioBuffer); +MA_API void ma_paged_audio_buffer_uninit(ma_paged_audio_buffer* pPagedAudioBuffer); +MA_API ma_result ma_paged_audio_buffer_read_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead); /* Returns MA_AT_END if no more pages available. */ +MA_API ma_result ma_paged_audio_buffer_seek_to_pcm_frame(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64 frameIndex); +MA_API ma_result ma_paged_audio_buffer_get_cursor_in_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64* pCursor); +MA_API ma_result ma_paged_audio_buffer_get_length_in_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64* pLength); + + + /************************************************************************************************************************************************************ Ring Buffer @@ -5771,9 +5962,11 @@ MA_API void* ma_rb_get_subbuffer_ptr(ma_rb* pRB, size_t subbufferIndex, void* pB typedef struct { + ma_data_source_base ds; ma_rb rb; ma_format format; ma_uint32 channels; + ma_uint32 sampleRate; /* Not required for the ring buffer itself, but useful for associating the data with some sample rate, particularly for data sources. */ } 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); @@ -5793,6 +5986,10 @@ 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); +MA_API ma_format ma_pcm_rb_get_format(const ma_pcm_rb* pRB); +MA_API ma_uint32 ma_pcm_rb_get_channels(const ma_pcm_rb* pRB); +MA_API ma_uint32 ma_pcm_rb_get_sample_rate(const ma_pcm_rb* pRB); +MA_API void ma_pcm_rb_set_sample_rate(ma_pcm_rb* pRB, ma_uint32 sampleRate); /* @@ -9553,195 +9750,6 @@ This will run on an optimized path when the volume is equal to 1. MA_API ma_result ma_mix_pcm_frames_f32(float* pDst, const float* pSrc, ma_uint64 frameCount, ma_uint32 channels, float volume); -/************************************************************************************************** - -Data Source - -**************************************************************************************************/ -typedef void ma_data_source; - -#define MA_DATA_SOURCE_SELF_MANAGED_RANGE_AND_LOOP_POINT 0x00000001 - -typedef struct -{ - ma_result (* onRead)(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead); - ma_result (* onSeek)(ma_data_source* pDataSource, ma_uint64 frameIndex); - ma_result (* onGetDataFormat)(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap); - ma_result (* onGetCursor)(ma_data_source* pDataSource, ma_uint64* pCursor); - ma_result (* onGetLength)(ma_data_source* pDataSource, ma_uint64* pLength); - ma_result (* onSetLooping)(ma_data_source* pDataSource, ma_bool32 isLooping); - ma_uint32 flags; -} ma_data_source_vtable; - -typedef ma_data_source* (* ma_data_source_get_next_proc)(ma_data_source* pDataSource); - -typedef struct -{ - const ma_data_source_vtable* vtable; -} ma_data_source_config; - -MA_API ma_data_source_config ma_data_source_config_init(void); - - -typedef struct -{ - const ma_data_source_vtable* vtable; - ma_uint64 rangeBegInFrames; - ma_uint64 rangeEndInFrames; /* Set to -1 for unranged (default). */ - ma_uint64 loopBegInFrames; /* Relative to rangeBegInFrames. */ - ma_uint64 loopEndInFrames; /* Relative to rangeBegInFrames. Set to -1 for the end of the range. */ - ma_data_source* pCurrent; /* When non-NULL, the data source being initialized will act as a proxy and will route all operations to pCurrent. Used in conjunction with pNext/onGetNext for seamless chaining. */ - ma_data_source* pNext; /* When set to NULL, onGetNext will be used. */ - ma_data_source_get_next_proc onGetNext; /* Will be used when pNext is NULL. If both are NULL, no next will be used. */ - MA_ATOMIC(4, ma_bool32) isLooping; -} ma_data_source_base; - -MA_API ma_result ma_data_source_init(const ma_data_source_config* pConfig, ma_data_source* pDataSource); -MA_API void ma_data_source_uninit(ma_data_source* pDataSource); -MA_API ma_result ma_data_source_read_pcm_frames(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead); /* Must support pFramesOut = NULL in which case a forward seek should be performed. */ -MA_API ma_result ma_data_source_seek_pcm_frames(ma_data_source* pDataSource, ma_uint64 frameCount, ma_uint64* pFramesSeeked); /* Can only seek forward. Equivalent to ma_data_source_read_pcm_frames(pDataSource, NULL, frameCount, &framesRead); */ -MA_API ma_result ma_data_source_seek_to_pcm_frame(ma_data_source* pDataSource, ma_uint64 frameIndex); -MA_API ma_result ma_data_source_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap); -MA_API ma_result ma_data_source_get_cursor_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pCursor); -MA_API ma_result ma_data_source_get_length_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pLength); /* Returns MA_NOT_IMPLEMENTED if the length is unknown or cannot be determined. Decoders can return this. */ -MA_API ma_result ma_data_source_get_cursor_in_seconds(ma_data_source* pDataSource, float* pCursor); -MA_API ma_result ma_data_source_get_length_in_seconds(ma_data_source* pDataSource, float* pLength); -MA_API ma_result ma_data_source_set_looping(ma_data_source* pDataSource, ma_bool32 isLooping); -MA_API ma_bool32 ma_data_source_is_looping(const ma_data_source* pDataSource); -MA_API ma_result ma_data_source_set_range_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 rangeBegInFrames, ma_uint64 rangeEndInFrames); -MA_API void ma_data_source_get_range_in_pcm_frames(const ma_data_source* pDataSource, ma_uint64* pRangeBegInFrames, ma_uint64* pRangeEndInFrames); -MA_API ma_result ma_data_source_set_loop_point_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 loopBegInFrames, ma_uint64 loopEndInFrames); -MA_API void ma_data_source_get_loop_point_in_pcm_frames(const ma_data_source* pDataSource, ma_uint64* pLoopBegInFrames, ma_uint64* pLoopEndInFrames); -MA_API ma_result ma_data_source_set_current(ma_data_source* pDataSource, ma_data_source* pCurrentDataSource); -MA_API ma_data_source* ma_data_source_get_current(const ma_data_source* pDataSource); -MA_API ma_result ma_data_source_set_next(ma_data_source* pDataSource, ma_data_source* pNextDataSource); -MA_API ma_data_source* ma_data_source_get_next(const ma_data_source* pDataSource); -MA_API ma_result ma_data_source_set_next_callback(ma_data_source* pDataSource, ma_data_source_get_next_proc onGetNext); -MA_API ma_data_source_get_next_proc ma_data_source_get_next_callback(const ma_data_source* pDataSource); - - -typedef struct -{ - ma_data_source_base ds; - ma_format format; - ma_uint32 channels; - ma_uint32 sampleRate; - ma_uint64 cursor; - ma_uint64 sizeInFrames; - const void* pData; -} ma_audio_buffer_ref; - -MA_API ma_result ma_audio_buffer_ref_init(ma_format format, ma_uint32 channels, const void* pData, ma_uint64 sizeInFrames, ma_audio_buffer_ref* pAudioBufferRef); -MA_API void ma_audio_buffer_ref_uninit(ma_audio_buffer_ref* pAudioBufferRef); -MA_API ma_result ma_audio_buffer_ref_set_data(ma_audio_buffer_ref* pAudioBufferRef, const void* pData, ma_uint64 sizeInFrames); -MA_API ma_uint64 ma_audio_buffer_ref_read_pcm_frames(ma_audio_buffer_ref* pAudioBufferRef, void* pFramesOut, ma_uint64 frameCount, ma_bool32 loop); -MA_API ma_result ma_audio_buffer_ref_seek_to_pcm_frame(ma_audio_buffer_ref* pAudioBufferRef, ma_uint64 frameIndex); -MA_API ma_result ma_audio_buffer_ref_map(ma_audio_buffer_ref* pAudioBufferRef, void** ppFramesOut, ma_uint64* pFrameCount); -MA_API ma_result ma_audio_buffer_ref_unmap(ma_audio_buffer_ref* pAudioBufferRef, ma_uint64 frameCount); /* Returns MA_AT_END if the end has been reached. This should be considered successful. */ -MA_API ma_bool32 ma_audio_buffer_ref_at_end(const ma_audio_buffer_ref* pAudioBufferRef); -MA_API ma_result ma_audio_buffer_ref_get_cursor_in_pcm_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pCursor); -MA_API ma_result ma_audio_buffer_ref_get_length_in_pcm_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pLength); -MA_API ma_result ma_audio_buffer_ref_get_available_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pAvailableFrames); - - - -typedef struct -{ - ma_format format; - ma_uint32 channels; - ma_uint32 sampleRate; - ma_uint64 sizeInFrames; - const void* pData; /* If set to NULL, will allocate a block of memory for you. */ - ma_allocation_callbacks allocationCallbacks; -} ma_audio_buffer_config; - -MA_API ma_audio_buffer_config ma_audio_buffer_config_init(ma_format format, ma_uint32 channels, ma_uint64 sizeInFrames, const void* pData, const ma_allocation_callbacks* pAllocationCallbacks); - -typedef struct -{ - ma_audio_buffer_ref ref; - ma_allocation_callbacks allocationCallbacks; - ma_bool32 ownsData; /* Used to control whether or not miniaudio owns the data buffer. If set to true, pData will be freed in ma_audio_buffer_uninit(). */ - ma_uint8 _pExtraData[1]; /* For allocating a buffer with the memory located directly after the other memory of the structure. */ -} ma_audio_buffer; - -MA_API ma_result ma_audio_buffer_init(const ma_audio_buffer_config* pConfig, ma_audio_buffer* pAudioBuffer); -MA_API ma_result ma_audio_buffer_init_copy(const ma_audio_buffer_config* pConfig, ma_audio_buffer* pAudioBuffer); -MA_API ma_result ma_audio_buffer_alloc_and_init(const ma_audio_buffer_config* pConfig, ma_audio_buffer** ppAudioBuffer); /* Always copies the data. Doesn't make sense to use this otherwise. Use ma_audio_buffer_uninit_and_free() to uninit. */ -MA_API void ma_audio_buffer_uninit(ma_audio_buffer* pAudioBuffer); -MA_API void ma_audio_buffer_uninit_and_free(ma_audio_buffer* pAudioBuffer); -MA_API ma_uint64 ma_audio_buffer_read_pcm_frames(ma_audio_buffer* pAudioBuffer, void* pFramesOut, ma_uint64 frameCount, ma_bool32 loop); -MA_API ma_result ma_audio_buffer_seek_to_pcm_frame(ma_audio_buffer* pAudioBuffer, ma_uint64 frameIndex); -MA_API ma_result ma_audio_buffer_map(ma_audio_buffer* pAudioBuffer, void** ppFramesOut, ma_uint64* pFrameCount); -MA_API ma_result ma_audio_buffer_unmap(ma_audio_buffer* pAudioBuffer, ma_uint64 frameCount); /* Returns MA_AT_END if the end has been reached. This should be considered successful. */ -MA_API ma_bool32 ma_audio_buffer_at_end(const ma_audio_buffer* pAudioBuffer); -MA_API ma_result ma_audio_buffer_get_cursor_in_pcm_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pCursor); -MA_API ma_result ma_audio_buffer_get_length_in_pcm_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pLength); -MA_API ma_result ma_audio_buffer_get_available_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pAvailableFrames); - - -/* -Paged Audio Buffer -================== -A paged audio buffer is made up of a linked list of pages. It's expandable, but not shrinkable. It -can be used for cases where audio data is streamed in asynchronously while allowing data to be read -at the same time. - -This is lock-free, but not 100% thread safe. You can append a page and read from the buffer across -simultaneously across different threads, however only one thread at a time can append, and only one -thread at a time can read and seek. -*/ -typedef struct ma_paged_audio_buffer_page ma_paged_audio_buffer_page; -struct ma_paged_audio_buffer_page -{ - MA_ATOMIC(MA_SIZEOF_PTR, ma_paged_audio_buffer_page*) pNext; - ma_uint64 sizeInFrames; - ma_uint8 pAudioData[1]; -}; - -typedef struct -{ - ma_format format; - ma_uint32 channels; - ma_paged_audio_buffer_page head; /* Dummy head for the lock-free algorithm. Always has a size of 0. */ - MA_ATOMIC(MA_SIZEOF_PTR, ma_paged_audio_buffer_page*) pTail; /* Never null. Initially set to &head. */ -} ma_paged_audio_buffer_data; - -MA_API ma_result ma_paged_audio_buffer_data_init(ma_format format, ma_uint32 channels, ma_paged_audio_buffer_data* pData); -MA_API void ma_paged_audio_buffer_data_uninit(ma_paged_audio_buffer_data* pData, const ma_allocation_callbacks* pAllocationCallbacks); -MA_API ma_paged_audio_buffer_page* ma_paged_audio_buffer_data_get_head(ma_paged_audio_buffer_data* pData); -MA_API ma_paged_audio_buffer_page* ma_paged_audio_buffer_data_get_tail(ma_paged_audio_buffer_data* pData); -MA_API ma_result ma_paged_audio_buffer_data_get_length_in_pcm_frames(ma_paged_audio_buffer_data* pData, ma_uint64* pLength); -MA_API ma_result ma_paged_audio_buffer_data_allocate_page(ma_paged_audio_buffer_data* pData, ma_uint64 pageSizeInFrames, const void* pInitialData, const ma_allocation_callbacks* pAllocationCallbacks, ma_paged_audio_buffer_page** ppPage); -MA_API ma_result ma_paged_audio_buffer_data_free_page(ma_paged_audio_buffer_data* pData, ma_paged_audio_buffer_page* pPage, const ma_allocation_callbacks* pAllocationCallbacks); -MA_API ma_result ma_paged_audio_buffer_data_append_page(ma_paged_audio_buffer_data* pData, ma_paged_audio_buffer_page* pPage); -MA_API ma_result ma_paged_audio_buffer_data_allocate_and_append_page(ma_paged_audio_buffer_data* pData, ma_uint32 pageSizeInFrames, const void* pInitialData, const ma_allocation_callbacks* pAllocationCallbacks); - - -typedef struct -{ - ma_paged_audio_buffer_data* pData; /* Must not be null. */ -} ma_paged_audio_buffer_config; - -MA_API ma_paged_audio_buffer_config ma_paged_audio_buffer_config_init(ma_paged_audio_buffer_data* pData); - - -typedef struct -{ - ma_data_source_base ds; - ma_paged_audio_buffer_data* pData; /* Audio data is read from here. Cannot be null. */ - ma_paged_audio_buffer_page* pCurrent; - ma_uint64 relativeCursor; /* Relative to the current page. */ - ma_uint64 absoluteCursor; -} ma_paged_audio_buffer; - -MA_API ma_result ma_paged_audio_buffer_init(const ma_paged_audio_buffer_config* pConfig, ma_paged_audio_buffer* pPagedAudioBuffer); -MA_API void ma_paged_audio_buffer_uninit(ma_paged_audio_buffer* pPagedAudioBuffer); -MA_API ma_result ma_paged_audio_buffer_read_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead); /* Returns MA_AT_END if no more pages available. */ -MA_API ma_result ma_paged_audio_buffer_seek_to_pcm_frame(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64 frameIndex); -MA_API ma_result ma_paged_audio_buffer_get_cursor_in_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64* pCursor); -MA_API ma_result ma_paged_audio_buffer_get_length_in_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64* pLength); - /************************************************************************************************************************************************************ @@ -56388,6 +56396,86 @@ MA_API void* ma_rb_get_subbuffer_ptr(ma_rb* pRB, size_t subbufferIndex, void* pB +/* Add stubs for each of the functions in ma_data_source_vtable. Named ma_pcm_rb_data_source__on_read, etc. */ +static ma_result ma_pcm_rb_data_source__on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead) +{ + /* Since there's no notion of an end, we don't ever want to return MA_AT_END here. But it is possible to return 0. */ + ma_pcm_rb* pRB = (ma_pcm_rb*)pDataSource; + ma_result result; + ma_uint64 totalFramesRead; + + MA_ASSERT(pRB != NULL); + + /* We need to run this in a loop since the ring buffer itself may loop. */ + totalFramesRead = 0; + while (totalFramesRead < frameCount) { + void* pMappedBuffer; + ma_uint32 mappedFrameCount; + ma_uint64 framesToRead = frameCount - totalFramesRead; + if (framesToRead > 0xFFFFFFFF) { + framesToRead = 0xFFFFFFFF; + } + + mappedFrameCount = (ma_uint32)framesToRead; + result = ma_pcm_rb_acquire_read(pRB, &mappedFrameCount, &pMappedBuffer); + if (result != MA_SUCCESS) { + break; + } + + if (mappedFrameCount == 0) { + break; /* <-- End of ring buffer. */ + } + + ma_copy_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, pRB->format, pRB->channels), pMappedBuffer, mappedFrameCount, pRB->format, pRB->channels); + + result = ma_pcm_rb_commit_read(pRB, mappedFrameCount); + if (result != MA_SUCCESS) { + break; + } + + totalFramesRead += mappedFrameCount; + } + + *pFramesRead = totalFramesRead; + return MA_SUCCESS; +} + +static ma_result ma_pcm_rb_data_source__on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap) +{ + ma_pcm_rb* pRB = (ma_pcm_rb*)pDataSource; + MA_ASSERT(pRB != NULL); + + if (pFormat != NULL) { + *pFormat = pRB->format; + } + + if (pChannels != NULL) { + *pChannels = pRB->channels; + } + + if (pSampleRate != NULL) { + *pSampleRate = pRB->sampleRate; + } + + /* Just assume the default channel map. */ + if (pChannelMap != NULL) { + ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pRB->channels); + } + + return MA_SUCCESS; +} + +static ma_data_source_vtable ma_gRBDataSourceVTable = +{ + ma_pcm_rb_data_source__on_read, + NULL, /* onSeek */ + ma_pcm_rb_data_source__on_get_data_format, + NULL, /* onGetCursor */ + NULL, /* onGetLength */ + NULL, /* onSetLooping */ + 0 +}; + static MA_INLINE ma_uint32 ma_pcm_rb_get_bpf(ma_pcm_rb* pRB) { MA_ASSERT(pRB != NULL); @@ -56416,8 +56504,21 @@ MA_API ma_result ma_pcm_rb_init_ex(ma_format format, ma_uint32 channels, ma_uint return result; } - pRB->format = format; - pRB->channels = channels; + pRB->format = format; + pRB->channels = channels; + pRB->sampleRate = 0; /* The sample rate is not passed in as a parameter. */ + + /* The PCM ring buffer is a data source. We need to get that set up as well. */ + { + ma_data_source_config dataSourceConfig = ma_data_source_config_init(); + dataSourceConfig.vtable = &ma_gRBDataSourceVTable; + + result = ma_data_source_init(&dataSourceConfig, &pRB->ds); + if (result != MA_SUCCESS) { + ma_rb_uninit(&pRB->rb); + return result; + } + } return MA_SUCCESS; } @@ -56433,6 +56534,7 @@ MA_API void ma_pcm_rb_uninit(ma_pcm_rb* pRB) return; } + ma_data_source_uninit(&pRB->ds); ma_rb_uninit(&pRB->rb); } @@ -56584,6 +56686,42 @@ MA_API void* ma_pcm_rb_get_subbuffer_ptr(ma_pcm_rb* pRB, ma_uint32 subbufferInde return ma_rb_get_subbuffer_ptr(&pRB->rb, subbufferIndex, pBuffer); } +MA_API ma_format ma_pcm_rb_get_format(const ma_pcm_rb* pRB) +{ + if (pRB == NULL) { + return ma_format_unknown; + } + + return pRB->format; +} + +MA_API ma_uint32 ma_pcm_rb_get_channels(const ma_pcm_rb* pRB) +{ + if (pRB == NULL) { + return 0; + } + + return pRB->channels; +} + +MA_API ma_uint32 ma_pcm_rb_get_sample_rate(const ma_pcm_rb* pRB) +{ + if (pRB == NULL) { + return 0; + } + + return pRB->sampleRate; +} + +MA_API void ma_pcm_rb_set_sample_rate(ma_pcm_rb* pRB, ma_uint32 sampleRate) +{ + if (pRB == NULL) { + return; + } + + pRB->sampleRate = sampleRate; +} + MA_API ma_result ma_duplex_rb_init(ma_format captureFormat, ma_uint32 captureChannels, ma_uint32 sampleRate, ma_uint32 captureInternalSampleRate, ma_uint32 captureInternalPeriodSizeInFrames, const ma_allocation_callbacks* pAllocationCallbacks, ma_duplex_rb* pRB)