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Optimization to ma_deinterleave_pcm_frames() for s32 and s24.

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This commit is contained in:
David Reid
2026-02-15 14:13:45 +10:00
parent 65a0c1f83d
commit 13f50137b0
1 changed files with 38 additions and 8 deletions
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miniaudio.h
+38 -8
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@@ -52905,9 +52905,10 @@ MA_API void ma_deinterleave_pcm_frames(ma_format format, ma_uint32 channels, ma_
{
const ma_uint8* pSrcU8 = (const ma_uint8*)pInterleavedPCMFrames;
ma_uint64 iPCMFrame;
for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
for (iPCMFrame = 0; iPCMFrame < frameCount; iPCMFrame += 1) {
ma_uint32 iChannel;
for (iChannel = 0; iChannel < channels; ++iChannel) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_uint8* pDstU8 = (ma_uint8*)ppDeinterleavedPCMFrames[iChannel];
pDstU8[iPCMFrame] = pSrcU8[iPCMFrame*channels+iChannel];
}
@@ -52918,9 +52919,9 @@ MA_API void ma_deinterleave_pcm_frames(ma_format format, ma_uint32 channels, ma_
{
const ma_int16* pSrcS16 = (const ma_int16*)pInterleavedPCMFrames;
ma_uint64 iPCMFrame;
for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
for (iPCMFrame = 0; iPCMFrame < frameCount; iPCMFrame += 1) {
ma_uint32 iChannel;
for (iChannel = 0; iChannel < channels; ++iChannel) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_int16* pDstS16 = (ma_int16*)ppDeinterleavedPCMFrames[iChannel];
pDstS16[iPCMFrame] = pSrcS16[iPCMFrame*channels+iChannel];
}
@@ -52931,22 +52932,51 @@ MA_API void ma_deinterleave_pcm_frames(ma_format format, ma_uint32 channels, ma_
{
const float* pSrcF32 = (const float*)pInterleavedPCMFrames;
ma_uint64 iPCMFrame;
for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
for (iPCMFrame = 0; iPCMFrame < frameCount; iPCMFrame += 1) {
ma_uint32 iChannel;
for (iChannel = 0; iChannel < channels; ++iChannel) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
float* pDstF32 = (float*)ppDeinterleavedPCMFrames[iChannel];
pDstF32[iPCMFrame] = pSrcF32[iPCMFrame*channels+iChannel];
}
}
} break;
case ma_format_s32:
{
const ma_int32* pSrcS32 = (const ma_int32*)pInterleavedPCMFrames;
ma_uint64 iPCMFrame;
for (iPCMFrame = 0; iPCMFrame < frameCount; iPCMFrame += 1) {
ma_uint32 iChannel;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_int32* pDstS32 = (ma_int32*)ppDeinterleavedPCMFrames[iChannel];
pDstS32[iPCMFrame] = pSrcS32[iPCMFrame*channels+iChannel];
}
}
} break;
case ma_format_s24:
{
const ma_uint8* pSrcS24 = (const ma_uint8*)pInterleavedPCMFrames;
ma_uint64 iPCMFrame;
for (iPCMFrame = 0; iPCMFrame < frameCount; iPCMFrame += 1) {
ma_uint32 iChannel;
for (iChannel = 0; iChannel < channels; iChannel += 1) {
ma_uint8* pDstS24 = (ma_uint8*)ppDeinterleavedPCMFrames[iChannel];
pDstS24[iPCMFrame + 0] = pSrcS24[(iPCMFrame*channels+iChannel)*3 + 0];
pDstS24[iPCMFrame + 1] = pSrcS24[(iPCMFrame*channels+iChannel)*3 + 1];
pDstS24[iPCMFrame + 2] = pSrcS24[(iPCMFrame*channels+iChannel)*3 + 2];
}
}
} break;
/* Generic fallback. Should never actually hit this. */
default:
{
ma_uint32 sampleSizeInBytes = ma_get_bytes_per_sample(format);
ma_uint64 iPCMFrame;
for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
for (iPCMFrame = 0; iPCMFrame < frameCount; iPCMFrame += 1) {
ma_uint32 iChannel;
for (iChannel = 0; iChannel < channels; ++iChannel) {
for (iChannel = 0; iChannel < channels; iChannel += 1) {
void* pDst = ma_offset_ptr(ppDeinterleavedPCMFrames[iChannel], iPCMFrame*sampleSizeInBytes);
const void* pSrc = ma_offset_ptr(pInterleavedPCMFrames, (iPCMFrame*channels+iChannel)*sampleSizeInBytes);
memcpy(pDst, pSrc, sampleSizeInBytes);