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Update dr_flac.

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This commit is contained in:
David Reid
2018-08-29 20:55:55 +10:00
parent e511458e33
commit 2192424672
1 changed files with 30 additions and 25 deletions
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extras/dr_flac.h
+30 -25
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@@ -1,5 +1,5 @@
// FLAC audio decoder. Public domain. See "unlicense" statement at the end of this file. // FLAC audio decoder. Public domain. See "unlicense" statement at the end of this file.
// dr_flac - v0.9.10 - 2018-08-07 // dr_flac - v0.9.11 - 2018-08-29
// //
// David Reid - mackron@gmail.com // David Reid - mackron@gmail.com
@@ -5146,10 +5146,10 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
case DRFLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE: case DRFLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE:
{ {
if (channelIndex == 0) { if (channelIndex == 0) {
decodedSample = pFlac->currentFrame.subframes[channelIndex].pDecodedSamples[nextSampleInFrame]; decodedSample = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
} else { } else {
int side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame]; int side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
int left = pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame]; int left = pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex - 1].wastedBitsPerSample;
decodedSample = left - side; decodedSample = left - side;
} }
} break; } break;
@@ -5157,11 +5157,11 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
case DRFLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE: case DRFLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE:
{ {
if (channelIndex == 0) { if (channelIndex == 0) {
int side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame]; int side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
int right = pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame]; int right = pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 1].wastedBitsPerSample;
decodedSample = side + right; decodedSample = side + right;
} else { } else {
decodedSample = pFlac->currentFrame.subframes[channelIndex].pDecodedSamples[nextSampleInFrame]; decodedSample = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
} }
} break; } break;
@@ -5170,14 +5170,14 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
int mid; int mid;
int side; int side;
if (channelIndex == 0) { if (channelIndex == 0) {
mid = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame]; mid = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
side = pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame]; side = pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 1].wastedBitsPerSample;
mid = (((unsigned int)mid) << 1) | (side & 0x01); mid = (((unsigned int)mid) << 1) | (side & 0x01);
decodedSample = (mid + side) >> 1; decodedSample = (mid + side) >> 1;
} else { } else {
mid = pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame]; mid = pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex - 1].wastedBitsPerSample;
side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame]; side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
mid = (((unsigned int)mid) << 1) | (side & 0x01); mid = (((unsigned int)mid) << 1) | (side & 0x01);
decodedSample = (mid - side) >> 1; decodedSample = (mid - side) >> 1;
@@ -5187,12 +5187,12 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
case DRFLAC_CHANNEL_ASSIGNMENT_INDEPENDENT: case DRFLAC_CHANNEL_ASSIGNMENT_INDEPENDENT:
default: default:
{ {
decodedSample = pFlac->currentFrame.subframes[channelIndex].pDecodedSamples[nextSampleInFrame]; decodedSample = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
} break; } break;
} }
decodedSample <<= ((32 - pFlac->bitsPerSample) + pFlac->currentFrame.subframes[channelIndex].wastedBitsPerSample); decodedSample <<= (32 - pFlac->bitsPerSample);
if (bufferOut) { if (bufferOut) {
*bufferOut++ = decodedSample; *bufferOut++ = decodedSample;
@@ -5284,12 +5284,12 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame; const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
for (drflac_uint64 i = 0; i < alignedSampleCountPerChannel; ++i) { for (drflac_uint64 i = 0; i < alignedSampleCountPerChannel; ++i) {
int left = pDecodedSamples0[i]; int left = pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample);
int side = pDecodedSamples1[i]; int side = pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample);
int right = left - side; int right = left - side;
bufferOut[i*2+0] = left << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample); bufferOut[i*2+0] = left;
bufferOut[i*2+1] = right << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample); bufferOut[i*2+1] = right;
} }
} break; } break;
@@ -5299,12 +5299,12 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame; const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
for (drflac_uint64 i = 0; i < alignedSampleCountPerChannel; ++i) { for (drflac_uint64 i = 0; i < alignedSampleCountPerChannel; ++i) {
int side = pDecodedSamples0[i]; int side = pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample);
int right = pDecodedSamples1[i]; int right = pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample);
int left = right + side; int left = right + side;
bufferOut[i*2+0] = left << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample); bufferOut[i*2+0] = left;
bufferOut[i*2+1] = right << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample); bufferOut[i*2+1] = right;
} }
} break; } break;
@@ -5314,11 +5314,13 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame; const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
for (drflac_uint64 i = 0; i < alignedSampleCountPerChannel; ++i) { for (drflac_uint64 i = 0; i < alignedSampleCountPerChannel; ++i) {
int side = pDecodedSamples1[i]; int mid = pDecodedSamples0[i] << pFlac->currentFrame.subframes[0].wastedBitsPerSample;
int mid = (((drflac_uint32)pDecodedSamples0[i]) << 1) | (side & 0x01); int side = pDecodedSamples1[i] << pFlac->currentFrame.subframes[1].wastedBitsPerSample;
bufferOut[i*2+0] = ((mid + side) >> 1) << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample); mid = (((drflac_uint32)mid) << 1) | (side & 0x01);
bufferOut[i*2+1] = ((mid - side) >> 1) << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample);
bufferOut[i*2+0] = ((mid + side) >> 1) << (unusedBitsPerSample);
bufferOut[i*2+1] = ((mid - side) >> 1) << (unusedBitsPerSample);
} }
} break; } break;
@@ -5750,6 +5752,9 @@ const char* drflac_next_vorbis_comment(drflac_vorbis_comment_iterator* pIter, dr
// REVISION HISTORY // REVISION HISTORY
// //
// v0.9.11 - 2018-08-29
// - Fix a bug with sample reconstruction.
//
// v0.9.10 - 2018-08-07 // v0.9.10 - 2018-08-07
// - Improve 64-bit detection. // - Improve 64-bit detection.
// //