mirror of
https://github.com/mackron/miniaudio.git
synced 2026-04-30 12:14:03 +02:00
David Reid
a9043ba26d
This is used for making a copy of a data source. Data sources are not required to support copying, in which case this callback can be set to NULL, or it can return MA_NOT_IMPLEMENTED. This commit just sets up the infrastructure. As of this commit, no data sources actually implement this, however future commits will be introducing support in stages.
47 lines
2.0 KiB
C
47 lines
2.0 KiB
C
/*
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This implements a data source that decodes Opus streams via libopus + libopusfile.
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This object can be plugged into any `ma_data_source_*()` API and can also be used as a custom
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decoding backend. See the custom_decoder example.
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This does not support copying.
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*/
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#ifndef miniaudio_libopus_h
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#define miniaudio_libopus_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "../../../miniaudio.h"
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typedef struct
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{
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ma_data_source_base ds; /* The libopus decoder can be used independently as a data source. */
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ma_allocation_callbacks allocationCallbacks;
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ma_read_proc onRead;
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ma_seek_proc onSeek;
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ma_tell_proc onTell;
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void* pReadSeekTellUserData;
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ma_format format; /* Will be either f32 or s16. */
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/*OggOpusFile**/ void* of; /* Typed as void* so we can avoid a dependency on opusfile in the header section. */
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} ma_libopus;
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MA_API ma_result ma_libopus_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_libopus* pOpus);
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MA_API void ma_libopus_uninit(ma_libopus* pOpus);
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MA_API ma_result ma_libopus_read_pcm_frames(ma_libopus* pOpus, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead);
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MA_API ma_result ma_libopus_seek_to_pcm_frame(ma_libopus* pOpus, ma_uint64 frameIndex);
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MA_API ma_result ma_libopus_get_data_format(ma_libopus* pOpus, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
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MA_API ma_result ma_libopus_get_cursor_in_pcm_frames(ma_libopus* pOpus, ma_uint64* pCursor);
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MA_API ma_result ma_libopus_get_length_in_pcm_frames(ma_libopus* pOpus, ma_uint64* pLength);
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/* Decoding backend vtable. This is what you'll plug into ma_decoder_config.pBackendVTables. No user data required. */
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extern ma_decoding_backend_vtable* ma_decoding_backend_libopus;
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MA_API ma_decoding_backend_vtable* ma_libopus_get_vtable(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* miniaudio_libopus_h */
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