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Add support for copying audio ring buffers.

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This commit is contained in:
David Reid
2026-04-29 15:25:31 +10:00
parent bfd3c98797
commit f68fe8b076
1 changed files with 31 additions and 1 deletions
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miniaudio.h
+31 -1
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@@ -6468,6 +6468,7 @@ typedef struct ma_audio_ring_buffer
} ma_audio_ring_buffer;
MA_API ma_result ma_audio_ring_buffer_init(const ma_audio_ring_buffer_config* pConfig, ma_audio_ring_buffer* pRingBuffer);
MA_API ma_result ma_audio_ring_buffer_init_copy(ma_audio_ring_buffer* pRingBuffer, ma_audio_ring_buffer* pNewRingBuffer);
MA_API void ma_audio_ring_buffer_uninit(ma_audio_ring_buffer* pRingBuffer);
MA_API ma_uint32 ma_audio_ring_buffer_map_produce(ma_audio_ring_buffer* pRingBuffer, ma_uint32 frameCount, void** ppMappedBuffer); /* Returns the number of frames actually mapped. */
MA_API void ma_audio_ring_buffer_unmap_produce(ma_audio_ring_buffer* pRingBuffer, ma_uint32 frameCount);
@@ -68310,6 +68311,11 @@ static void ma_audio_ring_buffer__data_source_on_uninit(ma_data_source* pDataSou
ma_audio_ring_buffer_uninit((ma_audio_ring_buffer*)pDataSource);
}
static ma_result ma_audio_ring_buffer__data_source_on_copy(ma_data_source* pDataSource, ma_data_source* pNewDataSource)
{
return ma_audio_ring_buffer_init_copy((ma_audio_ring_buffer*)pDataSource, (ma_audio_ring_buffer*)pNewDataSource);
}
static ma_result ma_audio_ring_buffer__data_source_on_read(ma_data_source* pDataSource, void* pFrames, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
ma_audio_ring_buffer* pRingBuffer = (ma_audio_ring_buffer*)pDataSource;
@@ -68371,7 +68377,7 @@ static ma_data_source_vtable ma_gDataSourceVTable_AudioRingBuffer =
{
ma_audio_ring_buffer__data_source_on_sizeof,
ma_audio_ring_buffer__data_source_on_uninit,
NULL, /* onCopy */
ma_audio_ring_buffer__data_source_on_copy,
ma_audio_ring_buffer__data_source_on_read,
NULL, /* No seeking in ring buffers. */
ma_audio_ring_buffer__data_source_on_get_data_format,
@@ -68463,6 +68469,30 @@ MA_API ma_result ma_audio_ring_buffer_init(const ma_audio_ring_buffer_config* pC
return MA_SUCCESS;
}
MA_API ma_result ma_audio_ring_buffer_init_copy(ma_audio_ring_buffer* pRingBuffer, ma_audio_ring_buffer* pNewRingBuffer)
{
ma_audio_ring_buffer_config config;
if (pNewRingBuffer == NULL || pRingBuffer == NULL) {
return MA_INVALID_ARGS;
}
config = ma_audio_ring_buffer_config_init(pRingBuffer->format, pRingBuffer->channels, pRingBuffer->sampleRate, pRingBuffer->rb.capacity);
config.pAllocationCallbacks = &pRingBuffer->allocationCallbacks;
/*
For the buffer, if it's an internally managed we want to make sure the copy is also internally managed. If it's externally
managed we can make the copy also external.
*/
if (pRingBuffer->isOwnerOfBuffer) {
config.pBuffer = NULL; /* Internally managed. Set the buffer to null to trigger the new ring buffer to also allocate it's own buffer. */
} else {
config.pBuffer = pRingBuffer->pBuffer; /* Externally managed. Just reuse the buffer. */
}
return ma_audio_ring_buffer_init(&config, pNewRingBuffer);
}
MA_API void ma_audio_ring_buffer_uninit(ma_audio_ring_buffer* pRingBuffer)
{
if (pRingBuffer == NULL) {