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Copy pathAudioGenerator.cpp
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61 lines (51 loc) · 1.19 KB
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#include "AudioGenerator.hpp"
namespace avtranscoder
{
AudioGenerator::AudioGenerator()
: _inputFrame( NULL )
, _silent( NULL )
, _frameDesc()
{
}
AudioGenerator::~AudioGenerator()
{
delete _silent;
}
void AudioGenerator::setAudioFrameDesc( const AudioFrameDesc& frameDesc )
{
_frameDesc = frameDesc;
_frameDesc.setFps( 25. );
}
void AudioGenerator::setFrame( Frame& inputFrame )
{
_inputFrame = &inputFrame;
}
bool AudioGenerator::decodeNextFrame( Frame& frameBuffer )
{
// Generate silent
if( ! _inputFrame )
{
AudioFrame& audioBuffer = static_cast<AudioFrame&>( frameBuffer );
audioBuffer.setNbSamples( _frameDesc.getSampleRate() / _frameDesc.getFps() );
// Generate the silent only once
if( ! _silent )
{
int fillChar = 0;
_silent = new AudioFrame( audioBuffer.desc() );
_silent->assign( _frameDesc.getDataSize(), fillChar );
_silent->setNbSamples( audioBuffer.getNbSamples() );
}
frameBuffer.refData( *_silent );
}
// Take audio frame from _inputFrame
else
{
frameBuffer.refData( _inputFrame->getData(), _inputFrame->getSize() );
}
return true;
}
bool AudioGenerator::decodeNextFrame( Frame& frameBuffer, const size_t subStreamIndex )
{
return false;
}
}