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removed MixedAudioRingBuffer class files

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wangyix 2014-07-25 16:06:56 -07:00
parent e17556384d
commit 78031622db
2 changed files with 0 additions and 81 deletions
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52
libraries/audio/src/MixedAudioRingBuffer.cpp
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//
// MixedAudioRingBuffer.cpp
// libraries/audio/src
//
// Created by Stephen Birarda on 2014.
// Copyright 2014 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#include "MixedAudioRingBuffer.h"
MixedAudioRingBuffer::MixedAudioRingBuffer(int numFrameSamples) :
AudioRingBuffer(numFrameSamples),
_lastReadFrameAverageLoudness(0.0f)
{
}
qint64 MixedAudioRingBuffer::readSamples(int16_t* destination, qint64 maxSamples) {
// calculate the average loudness for the frame about to go out
// read from _nextOutput either _numFrameSamples or to the end of the buffer
int samplesFromNextOutput = _buffer + _sampleCapacity - _nextOutput;
if (samplesFromNextOutput > _numFrameSamples) {
samplesFromNextOutput = _numFrameSamples;
}
float averageLoudness = 0.0f;
for (int s = 0; s < samplesFromNextOutput; s++) {
averageLoudness += fabsf(_nextOutput[s]);
}
// read samples from the beginning of the buffer, if any
int samplesFromBeginning = _numFrameSamples - samplesFromNextOutput;
if (samplesFromBeginning > 0) {
for (int b = 0; b < samplesFromBeginning; b++) {
averageLoudness += fabsf(_buffer[b]);
}
}
// divide by the number of samples and the MAX_SAMPLE_VALUE to get a float from 0 - 1
averageLoudness /= (float) _numFrameSamples;
averageLoudness /= (float) MAX_SAMPLE_VALUE;
_lastReadFrameAverageLoudness = averageLoudness;
return AudioRingBuffer::readSamples(destination, maxSamples);
}

29
libraries/audio/src/MixedAudioRingBuffer.h
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//
// MixedAudioRingBuffer.h
// libraries/audio/src
//
// Created by Stephen Birarda on 2014.
// Copyright 2014 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#ifndef hifi_MixedAudioRingBuffer_h
#define hifi_MixedAudioRingBuffer_h
#include "AudioRingBuffer.h"
class MixedAudioRingBuffer : public AudioRingBuffer {
Q_OBJECT
public:
MixedAudioRingBuffer(int numFrameSamples);
float getLastReadFrameAverageLoudness() const { return _lastReadFrameAverageLoudness; }
qint64 readSamples(int16_t* destination, qint64 maxSamples);
private:
float _lastReadFrameAverageLoudness;
};
#endif // hifi_MixedAudioRingBuffer_h