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disabled SIMD adds in AudioMixer for windows

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This commit is contained in:
wangyix 2014-07-15 12:23:02 -07:00
parent 1047ec7c87
commit a1b2bf59e9
2 changed files with 34 additions and 2 deletions
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35
assignment-client/src/audio/AudioMixer.cpp
View file

@ -231,6 +231,12 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
delayBufferSample[0] = correctBufferSample[0] * weakChannelAmplitudeRatio;
delayBufferSample[1] = correctBufferSample[1] * weakChannelAmplitudeRatio;
#ifdef _WIN32
_clientSamples[s + goodChannelOffset] += correctBufferSample[0];
_clientSamples[s + goodChannelOffset + SINGLE_STEREO_OFFSET] += correctBufferSample[1];
_clientSamples[delayedChannelIndex] += delayBufferSample[0];
_clientSamples[delayedChannelIndex + SINGLE_STEREO_OFFSET] += delayBufferSample[1];
#else
__m64 bufferSamples = _mm_set_pi16(_clientSamples[s + goodChannelOffset],
_clientSamples[s + goodChannelOffset + SINGLE_STEREO_OFFSET],
_clientSamples[delayedChannelIndex],
@ -247,6 +253,7 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
_clientSamples[s + goodChannelOffset + SINGLE_STEREO_OFFSET] = shortResults[2];
_clientSamples[delayedChannelIndex] = shortResults[1];
_clientSamples[delayedChannelIndex + SINGLE_STEREO_OFFSET] = shortResults[0];
#endif
}
// The following code is pretty gross and redundant, but AFAIK it's the best way to avoid
@ -271,6 +278,13 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
while (i + 3 < numSamplesDelay) {
// handle the first cases where we can MMX add four samples at once
int parentIndex = i * 2;
#ifdef _WIN32
_clientSamples[parentIndex + delayedChannelOffset] += delayNextOutputStart[i] * attenuationAndWeakChannelRatio;
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset] += delayNextOutputStart[i + 1] * attenuationAndWeakChannelRatio;
_clientSamples[parentIndex + DOUBLE_STEREO_OFFSET + delayedChannelOffset] += delayNextOutputStart[i + 2] * attenuationAndWeakChannelRatio;
_clientSamples[parentIndex + TRIPLE_STEREO_OFFSET + delayedChannelOffset] += delayNextOutputStart[i + 3] * attenuationAndWeakChannelRatio;
#else
__m64 bufferSamples = _mm_set_pi16(_clientSamples[parentIndex + delayedChannelOffset],
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset],
_clientSamples[parentIndex + DOUBLE_STEREO_OFFSET + delayedChannelOffset],
@ -286,7 +300,8 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset] = shortResults[2];
_clientSamples[parentIndex + DOUBLE_STEREO_OFFSET + delayedChannelOffset] = shortResults[1];
_clientSamples[parentIndex + TRIPLE_STEREO_OFFSET + delayedChannelOffset] = shortResults[0];
#endif
// push the index
i += 4;
}
@ -296,6 +311,11 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
if (i + 2 < numSamplesDelay) {
// MMX add only three delayed samples
#ifdef _WIN32
_clientSamples[parentIndex + delayedChannelOffset] += delayNextOutputStart[i] * attenuationAndWeakChannelRatio;
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset] += delayNextOutputStart[i + 1] * attenuationAndWeakChannelRatio;
_clientSamples[parentIndex + DOUBLE_STEREO_OFFSET + delayedChannelOffset] += delayNextOutputStart[i + 2] * attenuationAndWeakChannelRatio;
#else
__m64 bufferSamples = _mm_set_pi16(_clientSamples[parentIndex + delayedChannelOffset],
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset],
_clientSamples[parentIndex + DOUBLE_STEREO_OFFSET + delayedChannelOffset],
@ -310,8 +330,15 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
_clientSamples[parentIndex + delayedChannelOffset] = shortResults[3];
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset] = shortResults[2];
_clientSamples[parentIndex + DOUBLE_STEREO_OFFSET + delayedChannelOffset] = shortResults[1];
#endif
} else if (i + 1 < numSamplesDelay) {
#ifdef _WIN32
_clientSamples[parentIndex + delayedChannelOffset] += delayNextOutputStart[i] * attenuationAndWeakChannelRatio;
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset] += delayNextOutputStart[i + 1] * attenuationAndWeakChannelRatio;
#else
// MMX add two delayed samples
__m64 bufferSamples = _mm_set_pi16(_clientSamples[parentIndex + delayedChannelOffset],
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset],
@ -324,9 +351,12 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
_clientSamples[parentIndex + delayedChannelOffset] = shortResults[3];
_clientSamples[parentIndex + SINGLE_STEREO_OFFSET + delayedChannelOffset] = shortResults[2];
#endif
} else if (i < numSamplesDelay) {
// MMX add a single delayed sample
#ifdef _WIN32
_clientSamples[parentIndex + delayedChannelOffset] += delayNextOutputStart[i] * attenuationAndWeakChannelRatio;
#else
__m64 bufferSamples = _mm_set_pi16(_clientSamples[parentIndex + delayedChannelOffset], 0, 0, 0);
__m64 addSamples = _mm_set_pi16(delayNextOutputStart[i] * attenuationAndWeakChannelRatio, 0, 0, 0);
@ -334,6 +364,7 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
int16_t* shortResults = reinterpret_cast<int16_t*>(&mmxResult);
_clientSamples[parentIndex + delayedChannelOffset] = shortResults[3];
#endif
}
}
} else {

1
libraries/audio/src/PositionalAudioRingBuffer.cpp
View file

@ -149,6 +149,7 @@ void PositionalAudioRingBuffer::updateNextOutputTrailingLoudness() {
// fixes bug on Windows where _nextOutputTrailingLoudness sometimes becomes NaN. In that case,
// revert _nextOutputTrailingLoudness to its previous value
if (isNaN(_nextOutputTrailingLoudness)) {
printf("next output trailling loudness NaN!! --------------------------------------\n");
_nextOutputTrailingLoudness = oldNextOutputTrailingLoudness;
}
}