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Audio optimization to sceAtracLowLevelDecode()

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raven02 2013-07-07 06:03:25 +08:00 committed by Henrik Rydgard
parent 1edce69608
commit 17792ac623
1 changed files with 4 additions and 2 deletions
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6
Core/HLE/sceAtrac.cpp
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@ -1702,11 +1702,13 @@ int sceAtracLowLevelDecode(int atracID, u32 sourceAddr, u32 sourceBytesConsumedA
int gotsize = atrac->sampleQueue.pop_front(buf, ATRAC3PLUS_MAX_SAMPLES * sizeof(s16) * atrac->atracChannels);
int numSamples = gotsize / sizeof(s16) / atrac->atracChannels;
s16* in = (s16*)buf;
int volumeShift = (MAX_CONFIG_VOLUME - g_Config.iBGMVolume);
if (volumeShift < 0) volumeShift = 0;
for (int i = 0; i < numSamples; i++) {
s16 sampleL = *in++ >> (MAX_CONFIG_VOLUME - g_Config.iBGMVolume); // Max = 4 and Min = 0(no shift)
s16 sampleL = *in++ >> volumeShift; // Max = 4 and Min = 0(no shift)
s16 sampleR = sampleL;
if (atrac->atracChannels == 2)
sampleR = *in++ >> (MAX_CONFIG_VOLUME - g_Config.iBGMVolume); // Max = 4 and Min = 0(no shift)
sampleR = *in++ >> volumeShift; // Max = 4 and Min = 0(no shift)
*out++ = sampleL;
if (atrac->atracOutputChannels == 2)
*out++ = sampleR;