bool SampleTrack::play( const MidiTime & _start, const fpp_t _frames,
const f_cnt_t _offset, int _tco_num )
{
m_audioPort.effects()->startRunning();
bool played_a_note = false; // will be return variable
tcoVector tcos;
::BBTrack * bb_track = NULL;
if( _tco_num >= 0 )
{
if( _start != 0 )
{
return false;
}
tcos.push_back( getTCO( _tco_num ) );
if (trackContainer() == (TrackContainer*)Engine::getBBTrackContainer())
{
bb_track = BBTrack::findBBTrack( _tco_num );
}
}
else
{
for( int i = 0; i < numOfTCOs(); ++i )
{
TrackContentObject * tco = getTCO( i );
SampleTCO * sTco = dynamic_cast<SampleTCO*>( tco );
float framesPerTick = Engine::framesPerTick();
if( _start >= sTco->startPosition() && _start < sTco->endPosition() )
{
if( sTco->isPlaying() == false && _start > sTco->startPosition() + sTco->startTimeOffset() )
{
f_cnt_t sampleStart = framesPerTick * ( _start - sTco->startPosition() - sTco->startTimeOffset() );
f_cnt_t tcoFrameLength = framesPerTick * ( sTco->endPosition() - sTco->startPosition() - sTco->startTimeOffset() );
f_cnt_t sampleBufferLength = sTco->sampleBuffer()->frames();
//if the Tco smaller than the sample length we play only until Tco end
//else we play the sample to the end but nothing more
f_cnt_t samplePlayLength = tcoFrameLength > sampleBufferLength ? sampleBufferLength : tcoFrameLength;
//we only play within the sampleBuffer limits
if( sampleStart < sampleBufferLength )
{
sTco->setSampleStartFrame( sampleStart );
sTco->setSamplePlayLength( samplePlayLength );
tcos.push_back( sTco );
sTco->setIsPlaying( true );
}
}
}
else
{
sTco->setIsPlaying( false );
}
}
}
for( tcoVector::Iterator it = tcos.begin(); it != tcos.end(); ++it )
{
SampleTCO * st = dynamic_cast<SampleTCO *>( *it );
if( !st->isMuted() )
{
PlayHandle* handle;
if( st->isRecord() )
{
if( !Engine::getSong()->isRecording() )
{
return played_a_note;
}
SampleRecordHandle* smpHandle = new SampleRecordHandle( st );
handle = smpHandle;
}
else
{
SamplePlayHandle* smpHandle = new SamplePlayHandle( st );
smpHandle->setVolumeModel( &m_volumeModel );
smpHandle->setBBTrack( bb_track );
handle = smpHandle;
}
handle->setOffset( _offset );
// send it to the mixer
Engine::mixer()->addPlayHandle( handle );
played_a_note = true;
}
}
return played_a_note;
}
