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added dirty fix for NaN _nextOutputTrailingLoudness

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This commit is contained in:
wangyix 2014-07-11 13:25:47 -07:00
parent c5e0da0477
commit d369435240
2 changed files with 40 additions and 7 deletions
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26
assignment-client/src/audio/AudioMixer.cpp
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@ -366,6 +366,11 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
}
void AudioMixer::prepareMixForListeningNode(Node* node) {
static int k = 0;
k++;
bool debug = (k % 20) == 0;
AvatarAudioRingBuffer* nodeRingBuffer = ((AudioMixerClientData*) node->getLinkedData())->getAvatarAudioRingBuffer();
// zero out the client mix for this node
@ -381,11 +386,30 @@ void AudioMixer::prepareMixForListeningNode(Node* node) {
for (int i = 0; i < otherNodeClientData->getRingBuffers().size(); i++) {
PositionalAudioRingBuffer* otherNodeBuffer = otherNodeClientData->getRingBuffers()[i];
if ((*otherNode != *node
|| otherNodeBuffer->shouldLoopbackForNode())
&& otherNodeBuffer->willBeAddedToMix()
&& otherNodeBuffer->getNextOutputTrailingLoudness() > 0) {
&& otherNodeBuffer->getNextOutputTrailingLoudness() > 0.0f) {
addBufferToMixForListeningNodeWithBuffer(otherNodeBuffer, nodeRingBuffer);
} else {
//if (debug) {
printf("\nWILL NOT MIX!!!\n");
printf("listening node = %s\n", node->getUUID().toString().toLatin1().data());
printf("other node = %s\n", otherNode->getUUID().toString().toLatin1().data());
if (otherNodeBuffer->getType() == PositionalAudioRingBuffer::Microphone)
printf("\t avatar buffer...\n");
else
{
printf("\t inj buffer %s\n", ((InjectedAudioRingBuffer*)otherNodeBuffer)->getStreamIdentifier().toString().toLatin1().data());
}
printf("\t\t other==listening || shouldLoopBack: %d\n", (*otherNode != *node || otherNodeBuffer->shouldLoopbackForNode()));
printf("\t\t other will be added to mix: %d\n", otherNodeBuffer->willBeAddedToMix());
printf("\t\t other trailing loudess: %f\n", otherNodeBuffer->getNextOutputTrailingLoudness());
//}
}
}
}

21
libraries/audio/src/PositionalAudioRingBuffer.cpp
View file

@ -32,6 +32,7 @@ PositionalAudioRingBuffer::PositionalAudioRingBuffer(PositionalAudioRingBuffer::
_shouldLoopbackForNode(false),
_shouldOutputStarveDebug(true),
_isStereo(isStereo),
_nextOutputTrailingLoudness(0.0f),
_listenerUnattenuatedZone(NULL),
_lastFrameReceivedTime(0),
_interframeTimeGapStatsForJitterCalc(TIME_GAPS_FOR_JITTER_CALC_INTERVAL_SAMPLES, TIME_GAPS_FOR_JITTER_CALC_WINDOW_INTERVALS),
@ -121,27 +122,35 @@ void PositionalAudioRingBuffer::updateNextOutputTrailingLoudness() {
// ForBoundarySamples means that we expect the number of samples not to roll of the end of the ring buffer
float nextLoudness = 0;
for (int i = 0; i < _numFrameSamples; ++i) {
nextLoudness += fabsf(_nextOutput[i]);
if (samplesAvailable() >= _numFrameSamples) {
for (int i = 0; i < _numFrameSamples; ++i) {
nextLoudness += fabsf(_nextOutput[i]);
}
nextLoudness /= _numFrameSamples;
nextLoudness /= MAX_SAMPLE_VALUE;
}
nextLoudness /= _numFrameSamples;
nextLoudness /= MAX_SAMPLE_VALUE;
const int TRAILING_AVERAGE_FRAMES = 100;
const float CURRENT_FRAME_RATIO = 1.0f / TRAILING_AVERAGE_FRAMES;
const float PREVIOUS_FRAMES_RATIO = 1.0f - CURRENT_FRAME_RATIO;
const float LOUDNESS_EPSILON = 0.000001f;
float oldNextOutputTrailingLoudness = _nextOutputTrailingLoudness;
if (nextLoudness >= _nextOutputTrailingLoudness) {
_nextOutputTrailingLoudness = nextLoudness;
} else {
_nextOutputTrailingLoudness = (_nextOutputTrailingLoudness * PREVIOUS_FRAMES_RATIO) + (CURRENT_FRAME_RATIO * nextLoudness);
if (_nextOutputTrailingLoudness < LOUDNESS_EPSILON) {
_nextOutputTrailingLoudness = 0;
}
}
// fixes bug on Windows where _nextOutputTrailingLoudness sometimes becomes NaN. In that case,
// revert _nextOutputTrailingLoudness to its previous value
if (isNaN(_nextOutputTrailingLoudness)) {
_nextOutputTrailingLoudness = oldNextOutputTrailingLoudness;
}
}
bool PositionalAudioRingBuffer::shouldBeAddedToMix() {