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fix input loudness for a stereo source

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This commit is contained in:
Stephen Birarda 2014-06-06 11:26:04 -07:00
parent ae2f6a3cb6
commit f6011b65d7
3 changed files with 16 additions and 8 deletions
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4
assignment-client/src/audio/AudioMixer.cpp
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@ -307,9 +307,7 @@ void AudioMixer::addBufferToMixForListeningNodeWithBuffer(PositionalAudioRingBuf
}
}
} else {
// stereo buffer - do attenuation but no sample delay for spatialization
qDebug() << "Adding a stereo buffer";
// stereo buffer - do attenuation but no sample delay for spatialization
for (int s = 0; s < NETWORK_BUFFER_LENGTH_SAMPLES_STEREO; s += 4) {
// use MMX to clamp four additions at a time

3
assignment-client/src/audio/AudioMixerClientData.cpp
View file

@ -118,7 +118,8 @@ void AudioMixerClientData::pushBuffersAfterFrameSend() {
PositionalAudioRingBuffer* audioBuffer = _ringBuffers[i];
if (audioBuffer->willBeAddedToMix()) {
audioBuffer->shiftReadPosition(NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL);
audioBuffer->shiftReadPosition(audioBuffer->isStereo()
? NETWORK_BUFFER_LENGTH_SAMPLES_STEREO : NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL);
audioBuffer->setWillBeAddedToMix(false);
} else if (audioBuffer->getType() == PositionalAudioRingBuffer::Injector

17
interface/src/Audio.cpp
View file

@ -306,7 +306,7 @@ void linearResampling(int16_t* sourceSamples, int16_t* destinationSamples,
} else {
// this is a 48 to 24 resampling but both source and destination are two channels
// squish two samples into one in each channel
for (int i = 0; i < numSourceSamples; i += 2) {
for (int i = 0; i < numSourceSamples; i += 4) {
destinationSamples[i / 2] = (sourceSamples[i] / 2) + (sourceSamples[i + 2] / 2);
destinationSamples[(i / 2) + 1] = (sourceSamples[i + 1] / 2) + (sourceSamples[i + 3] / 2);
}
@ -585,6 +585,14 @@ void Audio::handleAudioInput() {
_lastInputLoudness = 0;
}
}
} else {
float loudness = 0.0f;
for (int i = 0; i < NETWORK_BUFFER_LENGTH_SAMPLES_STEREO; i++) {
loudness += fabsf(networkAudioSamples[i]);
}
_lastInputLoudness = fabs(loudness / NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL);
}
} else {
// our input loudness is 0, since we're muted
@ -626,11 +634,12 @@ void Audio::handleAudioInput() {
packetType = PacketTypeSilentAudioFrame;
// we need to indicate how many silent samples this is to the audio mixer
audioDataPacket[0] = NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL;
audioDataPacket[0] = _isStereoInput
? NETWORK_BUFFER_LENGTH_SAMPLES_STEREO
: NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL;
numAudioBytes = sizeof(int16_t);
} else {
numAudioBytes = NETWORK_BUFFER_LENGTH_BYTES_PER_CHANNEL;
numAudioBytes = _isStereoInput ? NETWORK_BUFFER_LENGTH_BYTES_STEREO : NETWORK_BUFFER_LENGTH_BYTES_PER_CHANNEL;
if (Menu::getInstance()->isOptionChecked(MenuOption::EchoServerAudio)) {
packetType = PacketTypeMicrophoneAudioWithEcho;