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Merge pull request #1397 from birarda/master

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fix for 8 channel audio output
This commit is contained in:
ZappoMan 2013-12-17 18:04:12 -08:00
commit a443570106
1 changed files with 5 additions and 5 deletions
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10
interface/src/Audio.cpp
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@ -174,9 +174,8 @@ void linearResampling(int16_t* sourceSamples, int16_t* destinationSamples,
if (sourceAudioFormat == destinationAudioFormat) {
memcpy(destinationSamples, sourceSamples, numSourceSamples * sizeof(int16_t));
} else {
int destinationChannels = (destinationAudioFormat.channelCount() >= 2) ? 2 : destinationAudioFormat.channelCount();
float sourceToDestinationFactor = (sourceAudioFormat.sampleRate() / (float) destinationAudioFormat.sampleRate())
* (sourceAudioFormat.channelCount() / (float) destinationChannels);
* (sourceAudioFormat.channelCount() / (float) destinationAudioFormat.channelCount());
// take into account the number of channels in source and destination
// accomodate for the case where have an output with > 2 channels
@ -203,14 +202,15 @@ void linearResampling(int16_t* sourceSamples, int16_t* destinationSamples,
// upsample from 24 to 48
// for now this only supports a stereo to stereo conversion - this is our case for network audio to output
int sourceIndex = 0;
int destinationToSourceFactor = (1 / sourceToDestinationFactor);
int dtsSampleRateFactor = (destinationAudioFormat.sampleRate() / sourceAudioFormat.sampleRate());
int sampleShift = destinationAudioFormat.channelCount() * dtsSampleRateFactor;
int destinationToSourceFactor = (1 / sourceToDestinationFactor);
for (int i = 0; i < numDestinationSamples; i += destinationAudioFormat.channelCount() * dtsSampleRateFactor) {
for (int i = 0; i < numDestinationSamples; i += sampleShift) {
sourceIndex = (i / destinationToSourceFactor);
// fill the L/R channels and make the rest silent
for (int j = i; j < i + (dtsSampleRateFactor * destinationAudioFormat.channelCount()); j++) {
for (int j = i; j < i + sampleShift; j++) {
if (j % destinationAudioFormat.channelCount() == 0) {
// left channel
destinationSamples[j] = sourceSamples[sourceIndex];