void AudioDecoder::setProfile( const ProfileLoader::Profile& profile )
{
LOG_DEBUG( "Set profile of audio decoder with:\n" << profile )
AudioCodec& codec = _inputStream->getAudioCodec();
// set threads before any other options
if( profile.count( constants::avProfileThreads ) )
codec.getOption( constants::avProfileThreads ).setString( profile.at( constants::avProfileThreads ) );
else
codec.getOption( constants::avProfileThreads ).setString( "auto" );
// set decoder options
for( ProfileLoader::Profile::const_iterator it = profile.begin(); it != profile.end(); ++it )
{
if( (*it).first == constants::avProfileIdentificator ||
(*it).first == constants::avProfileIdentificatorHuman ||
(*it).first == constants::avProfileType ||
(*it).first == constants::avProfileThreads )
continue;
try
{
Option& decodeOption = codec.getOption( (*it).first );
decodeOption.setString( (*it).second );
}
catch( std::exception& e )
{
LOG_WARN( "AudioDecoder - can't set option " << (*it).first << " to " << (*it).second << ": " << e.what() )
}
}
}
void AudioDecoder::setupDecoder( const ProfileLoader::Profile& profile )
{
// check the given profile
const bool isValid = ProfileLoader::checkAudioProfile( profile );
if( ! isValid && ! profile.empty() )
{
const std::string msg( "Invalid audio profile to setup decoder." );
LOG_ERROR( msg )
throw std::runtime_error( msg );
}
if( ! profile.empty() )
{
LOG_INFO( "Setup audio decoder with:\n" << profile )
}
AudioCodec& codec = _inputStream->getAudioCodec();
// set threads before any other options
if( profile.count( constants::avProfileThreads ) )
codec.getOption( constants::avProfileThreads ).setString( profile.at( constants::avProfileThreads ) );
else
codec.getOption( constants::avProfileThreads ).setInt( codec.getAVCodecContext().thread_count );
// set decoder options
for( ProfileLoader::Profile::const_iterator it = profile.begin(); it != profile.end(); ++it )
{
if( (*it).first == constants::avProfileIdentificator ||
(*it).first == constants::avProfileIdentificatorHuman ||
(*it).first == constants::avProfileType ||
(*it).first == constants::avProfileThreads )
continue;
try
{
Option& decodeOption = codec.getOption( (*it).first );
decodeOption.setString( (*it).second );
}
catch( std::exception& e )
{
LOG_WARN( "AudioDecoder - can't set option " << (*it).first << " to " << (*it).second << ": " << e.what() )
}
}
// open decoder
_inputStream->getAudioCodec().openCodec();
_isSetup = true;
}
StreamTranscoder::StreamTranscoder(
const ICodec& inputCodec,
IOutputFile& outputFile,
const ProfileLoader::Profile& profile
)
: _inputStream( NULL )
, _outputStream( NULL )
, _sourceBuffer( NULL )
, _frameBuffer( NULL )
, _inputDecoder( NULL )
, _generator( NULL )
, _currentDecoder( NULL )
, _outputEncoder( NULL )
, _transform( NULL )
, _subStreamIndex( -1 )
, _offset( 0 )
, _canSwitchToGenerator( false )
{
if( profile.find( constants::avProfileType )->second == constants::avProfileTypeVideo )
{
// generator decoder
VideoGenerator* generatorVideo = new VideoGenerator();
const VideoCodec& inputVideoCodec = static_cast<const VideoCodec&>( inputCodec );
generatorVideo->setVideoFrameDesc( inputVideoCodec.getVideoFrameDesc() );
_currentDecoder = generatorVideo;
// buffers to process
VideoFrameDesc inputFrameDesc = inputVideoCodec.getVideoFrameDesc();
VideoFrameDesc outputFrameDesc = inputFrameDesc;
outputFrameDesc.setParameters( profile );
_sourceBuffer = new VideoFrame( inputFrameDesc );
_frameBuffer = new VideoFrame( outputFrameDesc );
// transform
_transform = new VideoTransform();
// output encoder
VideoEncoder* outputVideo = new VideoEncoder( profile.at( constants::avProfileCodec ) );
outputVideo->setProfile( profile, outputFrameDesc );
_outputEncoder = outputVideo;
// output stream
_outputStream = &outputFile.addVideoStream( outputVideo->getVideoCodec() );
}
else if( profile.find( constants::avProfileType )->second == constants::avProfileTypeAudio )
{
// generator decoder
AudioGenerator* generatorAudio = new AudioGenerator();
const AudioCodec& inputAudioCodec = static_cast<const AudioCodec&>( inputCodec );
generatorAudio->setAudioFrameDesc( inputAudioCodec.getAudioFrameDesc() );
_currentDecoder = generatorAudio;
// buffers to process
AudioFrameDesc inputFrameDesc = inputAudioCodec.getAudioFrameDesc();
AudioFrameDesc outputFrameDesc = inputFrameDesc;
outputFrameDesc.setParameters( profile );
_sourceBuffer = new AudioFrame( inputFrameDesc );
_frameBuffer = new AudioFrame( outputFrameDesc );
// transform
_transform = new AudioTransform();
// output encoder
AudioEncoder* outputAudio = new AudioEncoder( profile.at( constants::avProfileCodec ) );
outputAudio->setProfile( profile, outputFrameDesc );
_outputEncoder = outputAudio;
// output stream
_outputStream = &outputFile.addAudioStream( outputAudio->getAudioCodec() );
}
else
{
throw std::runtime_error( "unupported stream type" );
}
}
StreamTranscoder::StreamTranscoder(
IInputStream& inputStream,
IOutputFile& outputFile,
const ProfileLoader::Profile& profile,
const int subStreamIndex,
const double offset
)
: _inputStream( &inputStream )
, _outputStream( NULL )
, _sourceBuffer( NULL )
, _frameBuffer( NULL )
, _inputDecoder( NULL )
, _generator( NULL )
, _currentDecoder( NULL )
, _outputEncoder( NULL )
, _transform( NULL )
, _subStreamIndex( subStreamIndex )
, _offset( offset )
, _canSwitchToGenerator( false )
{
// create a transcode case
switch( _inputStream->getStreamType() )
{
case AVMEDIA_TYPE_VIDEO :
{
// input decoder
VideoDecoder* inputVideo = new VideoDecoder( *static_cast<InputStream*>( _inputStream ) );
// set decoder options with empty profile to set some key options to specific values (example: threads to auto)
inputVideo->setProfile( ProfileLoader::Profile() );
inputVideo->setup();
_inputDecoder = inputVideo;
_currentDecoder = _inputDecoder;
// output encoder
VideoEncoder* outputVideo = new VideoEncoder( profile.at( constants::avProfileCodec ) );
_outputEncoder = outputVideo;
VideoFrameDesc outputFrameDesc = _inputStream->getVideoCodec().getVideoFrameDesc();
outputFrameDesc.setParameters( profile );
outputVideo->setProfile( profile, outputFrameDesc );
// output stream
_outputStream = &outputFile.addVideoStream( outputVideo->getVideoCodec() );
// buffers to process
_sourceBuffer = new VideoFrame( _inputStream->getVideoCodec().getVideoFrameDesc() );
_frameBuffer = new VideoFrame( outputVideo->getVideoCodec().getVideoFrameDesc() );
// transform
_transform = new VideoTransform();
// generator decoder
VideoGenerator* generatorVideo = new VideoGenerator();
generatorVideo->setVideoFrameDesc( outputVideo->getVideoCodec().getVideoFrameDesc() );
_generator = generatorVideo;
break;
}
case AVMEDIA_TYPE_AUDIO :
{
// input decoder
AudioDecoder* inputAudio = new AudioDecoder( *static_cast<InputStream*>( _inputStream ) );
// set decoder options with empty profile to set some key options to specific values (example: threads to auto)
inputAudio->setProfile( ProfileLoader::Profile() );
inputAudio->setup();
_inputDecoder = inputAudio;
_currentDecoder = _inputDecoder;
// output encoder
AudioEncoder* outputAudio = new AudioEncoder( profile.at( constants::avProfileCodec ) );
_outputEncoder = outputAudio;
AudioFrameDesc outputFrameDesc( _inputStream->getAudioCodec().getAudioFrameDesc() );
outputFrameDesc.setParameters( profile );
if( subStreamIndex > -1 )
{
// @todo manage downmix ?
outputFrameDesc.setChannels( 1 );
}
outputAudio->setProfile( profile, outputFrameDesc );
// output stream
_outputStream = &outputFile.addAudioStream( outputAudio->getAudioCodec() );
// buffers to process
AudioFrameDesc inputFrameDesc( _inputStream->getAudioCodec().getAudioFrameDesc() );
if( subStreamIndex > -1 )
inputFrameDesc.setChannels( 1 );
_sourceBuffer = new AudioFrame( inputFrameDesc );
_frameBuffer = new AudioFrame( outputAudio->getAudioCodec().getAudioFrameDesc() );
// transform
_transform = new AudioTransform();
// generator decoder
AudioGenerator* generatorAudio = new AudioGenerator();
generatorAudio->setAudioFrameDesc( outputAudio->getAudioCodec().getAudioFrameDesc() );
_generator = generatorAudio;
break;
}
default:
{
throw std::runtime_error( "unupported stream type" );
break;
}
}
if( offset )
switchToGeneratorDecoder();
}