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collect min and max loudness for each frame

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This commit is contained in:
Stephen Birarda 2014-03-19 17:57:01 -07:00
parent 515988fae5
commit fb73b6e1ce
4 changed files with 26 additions and 4 deletions
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11
assignment-client/src/audio/AudioMixer.cpp
View file

@ -62,7 +62,9 @@ void attachNewBufferToNode(Node *newNode) {
}
AudioMixer::AudioMixer(const QByteArray& packet) :
ThreadedAssignment(packet)
ThreadedAssignment(packet),
_minSourceLoudnessInFrame(1.0f),
_maxSourceLoudnessInFrame(0.0f)
{
}
@ -353,9 +355,14 @@ void AudioMixer::run() {
while (!_isFinished) {
_minSourceLoudnessInFrame = 1.0f;
_maxSourceLoudnessInFrame = 0.0f;
foreach (const SharedNodePointer& node, nodeList->getNodeHash()) {
if (node->getLinkedData()) {
((AudioMixerClientData*) node->getLinkedData())->checkBuffersBeforeFrameSend(JITTER_BUFFER_SAMPLES);
((AudioMixerClientData*) node->getLinkedData())->checkBuffersBeforeFrameSend(JITTER_BUFFER_SAMPLES,
_minSourceLoudnessInFrame,
_maxSourceLoudnessInFrame);
}
}

3
assignment-client/src/audio/AudioMixer.h
View file

@ -38,6 +38,9 @@ private:
// client samples capacity is larger than what will be sent to optimize mixing
int16_t _clientSamples[NETWORK_BUFFER_LENGTH_SAMPLES_STEREO + SAMPLE_PHASE_DELAY_AT_90];
float _minSourceLoudnessInFrame;
float _maxSourceLoudnessInFrame;
};
#endif /* defined(__hifi__AudioMixer__) */

14
assignment-client/src/audio/AudioMixerClientData.cpp
View file

@ -6,6 +6,8 @@
// Copyright (c) 2013 HighFidelity, Inc. All rights reserved.
//
#include <QDebug>
#include <PacketHeaders.h>
#include <UUID.h>
@ -82,7 +84,9 @@ int AudioMixerClientData::parseData(const QByteArray& packet) {
return 0;
}
void AudioMixerClientData::checkBuffersBeforeFrameSend(int jitterBufferLengthSamples) {
void AudioMixerClientData::checkBuffersBeforeFrameSend(int jitterBufferLengthSamples,
float& currentMinLoudness,
float& currentMaxLoudness) {
for (unsigned int i = 0; i < _ringBuffers.size(); i++) {
if (_ringBuffers[i]->shouldBeAddedToMix(jitterBufferLengthSamples)) {
// this is a ring buffer that is ready to go
@ -92,6 +96,14 @@ void AudioMixerClientData::checkBuffersBeforeFrameSend(int jitterBufferLengthSam
// calculate the average loudness for the next NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL
// that would be mixed in
_nextOutputLoudness = _ringBuffers[i]->averageLoudnessForBoundarySamples(NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL);
if (_nextOutputLoudness < currentMinLoudness) {
currentMinLoudness = _nextOutputLoudness;
}
if (_nextOutputLoudness > currentMaxLoudness) {
currentMaxLoudness = _nextOutputLoudness;
}
}
}
}

2
assignment-client/src/audio/AudioMixerClientData.h
View file

@ -27,7 +27,7 @@ public:
float getNextOutputLoudness() const { return _nextOutputLoudness; }
int parseData(const QByteArray& packet);
void checkBuffersBeforeFrameSend(int jitterBufferLengthSamples);
void checkBuffersBeforeFrameSend(int jitterBufferLengthSamples, float& currentMinLoudness, float& currentMaxLoudness);
void pushBuffersAfterFrameSend();
private:
std::vector<PositionalAudioRingBuffer*> _ringBuffers;