/// Render a note
/// Return false: the note is not ended
/// Return true: the note is ended
bool Sampler::__render_note( Note* pNote, unsigned nBufferSize, Song* pSong )
{
//infoLog( "[renderNote] instr: " + pNote->getInstrument()->m_sName );
assert( pSong );
unsigned int nFramepos;
Hydrogen* pEngine = Hydrogen::get_instance();
AudioOutput* audio_output = pEngine->getAudioOutput();
if ( pEngine->getState() == STATE_PLAYING ) {
nFramepos = audio_output->m_transport.m_nFrames;
} else {
// use this to support realtime events when not playing
nFramepos = pEngine->getRealtimeFrames();
}
Instrument *pInstr = pNote->get_instrument();
if ( !pInstr ) {
ERRORLOG( "NULL instrument" );
return 1;
}
bool nReturnValues [pInstr->get_components()->size()];
for(int i = 0; i < pInstr->get_components()->size(); i++){
nReturnValues[i] = false;
}
int nReturnValueIndex = 0;
int nAlreadySelectedLayer = -1;
for (std::vector<InstrumentComponent*>::iterator it = pInstr->get_components()->begin() ; it !=pInstr->get_components()->end(); ++it) {
nReturnValues[nReturnValueIndex] = false;
InstrumentComponent *pCompo = *it;
DrumkitComponent* pMainCompo = pEngine->getSong()->get_component( pCompo->get_drumkit_componentID() );
if( pNote->get_specific_compo_id() != -1 && pNote->get_specific_compo_id() != pCompo->get_drumkit_componentID() )
continue;
if( pInstr->is_preview_instrument()
|| pInstr->is_metronome_instrument()){
pMainCompo = pEngine->getSong()->get_components()->front();
} else {
pMainCompo = pEngine->getSong()->get_component( pCompo->get_drumkit_componentID() );
}
assert(pMainCompo);
float fLayerGain = 1.0;
float fLayerPitch = 0.0;
// scelgo il sample da usare in base alla velocity
Sample *pSample = nullptr;
SelectedLayerInfo *pSelectedLayer = pNote->get_layer_selected( pCompo->get_drumkit_componentID() );
if ( !pSelectedLayer ) {
QString dummy = QString( "NULL Layer Information for instrument %1. Component: %2" ).arg( pInstr->get_name() ).arg( pCompo->get_drumkit_componentID() );
WARNINGLOG( dummy );
nReturnValues[nReturnValueIndex] = true;
continue;
}
if( pSelectedLayer->SelectedLayer != -1 ) {
InstrumentLayer *pLayer = pCompo->get_layer( pSelectedLayer->SelectedLayer );
if( pLayer )
{
pSample = pLayer->get_sample();
fLayerGain = pLayer->get_gain();
fLayerPitch = pLayer->get_pitch();
}
}
else {
switch ( pInstr->sample_selection_alg() ) {
case Instrument::VELOCITY:
for ( unsigned nLayer = 0; nLayer < __maxLayers; ++nLayer ) {
InstrumentLayer *pLayer = pCompo->get_layer( nLayer );
if ( pLayer == NULL ) continue;
if ( ( pNote->get_velocity() >= pLayer->get_start_velocity() ) && ( pNote->get_velocity() <= pLayer->get_end_velocity() ) ) {
pSelectedLayer->SelectedLayer = nLayer;
pSample = pLayer->get_sample();
fLayerGain = pLayer->get_gain();
fLayerPitch = pLayer->get_pitch();
break;
}
}
break;
case Instrument::RANDOM:
if( nAlreadySelectedLayer != -1 ) {
InstrumentLayer *pLayer = pCompo->get_layer( nAlreadySelectedLayer );
if ( pLayer != NULL ) {
pSelectedLayer->SelectedLayer = nAlreadySelectedLayer;
pSample = pLayer->get_sample();
fLayerGain = pLayer->get_gain();
fLayerPitch = pLayer->get_pitch();
}
}
if( pSample == NULL ) {
int __possibleIndex[ __maxLayers ];
int __poundSamples = 0;
for ( unsigned nLayer = 0; nLayer < __maxLayers; ++nLayer ) {
InstrumentLayer *pLayer = pCompo->get_layer( nLayer );
if ( pLayer == NULL ) continue;
if ( ( pNote->get_velocity() >= pLayer->get_start_velocity() ) && ( pNote->get_velocity() <= pLayer->get_end_velocity() ) ) {
__possibleIndex[__poundSamples] = nLayer;
__poundSamples++;
}
}
if( __poundSamples > 0 ) {
nAlreadySelectedLayer = __possibleIndex[rand() % __poundSamples];
pSelectedLayer->SelectedLayer = nAlreadySelectedLayer;
InstrumentLayer *pLayer = pCompo->get_layer( nAlreadySelectedLayer );
pSample = pLayer->get_sample();
fLayerGain = pLayer->get_gain();
fLayerPitch = pLayer->get_pitch();
}
}
break;
case Instrument::ROUND_ROBIN:
if( nAlreadySelectedLayer != -1 ) {
InstrumentLayer *pLayer = pCompo->get_layer( nAlreadySelectedLayer );
if ( pLayer != NULL ) {
pSelectedLayer->SelectedLayer = nAlreadySelectedLayer;
pSample = pLayer->get_sample();
fLayerGain = pLayer->get_gain();
fLayerPitch = pLayer->get_pitch();
}
}
if( !pSample ) {
int __possibleIndex[ __maxLayers ];
int __foundSamples = 0;
float __roundRobinID;
for ( unsigned nLayer = 0; nLayer < __maxLayers; ++nLayer ) {
InstrumentLayer *pLayer = pCompo->get_layer( nLayer );
if ( pLayer == NULL ) continue;
if ( ( pNote->get_velocity() >= pLayer->get_start_velocity() ) && ( pNote->get_velocity() <= pLayer->get_end_velocity() ) ) {
__possibleIndex[__foundSamples] = nLayer;
__roundRobinID = pLayer->get_start_velocity();
__foundSamples++;
}
}
if( __foundSamples > 0 ) {
__roundRobinID = pInstr->get_id() * 10 + __roundRobinID;
int p_indexToUse = pSong->get_latest_round_robin(__roundRobinID)+1;
if( p_indexToUse > __foundSamples - 1)
p_indexToUse = 0;
pSong->set_latest_round_robin(__roundRobinID, p_indexToUse);
nAlreadySelectedLayer = __possibleIndex[p_indexToUse];
pSelectedLayer->SelectedLayer = nAlreadySelectedLayer;
InstrumentLayer *pLayer = pCompo->get_layer( nAlreadySelectedLayer );
pSample = pLayer->get_sample();
fLayerGain = pLayer->get_gain();
fLayerPitch = pLayer->get_pitch();
}
}
break;
}
}
if ( !pSample ) {
QString dummy = QString( "NULL sample for instrument %1. Note velocity: %2" ).arg( pInstr->get_name() ).arg( pNote->get_velocity() );
WARNINGLOG( dummy );
nReturnValues[nReturnValueIndex] = true;
continue;
}
if ( pSelectedLayer->SamplePosition >= pSample->get_frames() ) {
WARNINGLOG( "sample position out of bounds. The layer has been resized during note play?" );
nReturnValues[nReturnValueIndex] = true;
continue;
}
int noteStartInFrames = ( int ) ( pNote->get_position() * audio_output->m_transport.m_nTickSize ) + pNote->get_humanize_delay();
int nInitialSilence = 0;
if ( noteStartInFrames > ( int ) nFramepos ) { // scrivo silenzio prima dell'inizio della nota
nInitialSilence = noteStartInFrames - nFramepos;
int nFrames = nBufferSize - nInitialSilence;
if ( nFrames < 0 ) {
int noteStartInFramesNoHumanize = ( int )pNote->get_position() * audio_output->m_transport.m_nTickSize;
if ( noteStartInFramesNoHumanize > ( int )( nFramepos + nBufferSize ) ) {
// this note is not valid. it's in the future...let's skip it....
ERRORLOG( QString( "Note pos in the future?? Current frames: %1, note frame pos: %2" ).arg( nFramepos ).arg(noteStartInFramesNoHumanize ) );
//pNote->dumpInfo();
nReturnValues[nReturnValueIndex] = true;
continue;
}
// delay note execution
//INFOLOG( "Delaying note execution. noteStartInFrames: " + to_string( noteStartInFrames ) + ", nFramePos: " + to_string( nFramepos ) );
//return 0;
continue;
}
}
float cost_L = 1.0f;
float cost_R = 1.0f;
float cost_track_L = 1.0f;
float cost_track_R = 1.0f;
assert(pMainCompo);
bool isMutedForExport = (pEngine->getIsExportSessionActive() && !pInstr->is_currently_exported());
/*
* Is instrument muted?
*
* This can be the case either if the song, instrument or component is muted or if we're in an
* export session and we're doing per-instruments exports, but this instrument is not currently
* beeing exported.
*/
if ( isMutedForExport || pInstr->is_muted() || pSong->__is_muted || pMainCompo->is_muted() ) {
cost_L = 0.0;
cost_R = 0.0;
if ( Preferences::get_instance()->m_nJackTrackOutputMode == 0 ) {
// Post-Fader
cost_track_L = 0.0;
cost_track_R = 0.0;
}
} else { // Precompute some values...
if ( pInstr->get_apply_velocity() ) {
cost_L = cost_L * pNote->get_velocity(); // note velocity
cost_R = cost_R * pNote->get_velocity(); // note velocity
}
cost_L = cost_L * pNote->get_pan_l(); // note pan
cost_L = cost_L * fLayerGain; // layer gain
cost_L = cost_L * pInstr->get_pan_l(); // instrument pan
cost_L = cost_L * pInstr->get_gain(); // instrument gain
cost_L = cost_L * pCompo->get_gain(); // Component gain
cost_L = cost_L * pMainCompo->get_volume(); // Component volument
cost_L = cost_L * pInstr->get_volume(); // instrument volume
if ( Preferences::get_instance()->m_nJackTrackOutputMode == 0 ) {
// Post-Fader
cost_track_L = cost_L * 2;
}
cost_L = cost_L * pSong->get_volume(); // song volume
cost_L = cost_L * 2; // max pan is 0.5
cost_R = cost_R * pNote->get_pan_r(); // note pan
cost_R = cost_R * fLayerGain; // layer gain
cost_R = cost_R * pInstr->get_pan_r(); // instrument pan
cost_R = cost_R * pInstr->get_gain(); // instrument gain
cost_R = cost_R * pCompo->get_gain(); // Component gain
cost_R = cost_R * pMainCompo->get_volume(); // Component volument
cost_R = cost_R * pInstr->get_volume(); // instrument volume
if ( Preferences::get_instance()->m_nJackTrackOutputMode == 0 ) {
// Post-Fader
cost_track_R = cost_R * 2;
}
cost_R = cost_R * pSong->get_volume(); // song pan
cost_R = cost_R * 2; // max pan is 0.5
}
// direct track outputs only use velocity
if ( Preferences::get_instance()->m_nJackTrackOutputMode == 1 ) {
cost_track_L = cost_track_L * pNote->get_velocity();
cost_track_L = cost_track_L * fLayerGain;
cost_track_R = cost_track_L;
}
// Se non devo fare resample (drumkit) posso evitare di utilizzare i float e gestire il tutto in
// maniera ottimizzata
// constant^12 = 2, so constant = 2^(1/12) = 1.059463.
// float nStep = 1.0;1.0594630943593
float fTotalPitch = pNote->get_total_pitch() + fLayerPitch;
//_INFOLOG( "total pitch: " + to_string( fTotalPitch ) );
if( ( int )pSelectedLayer->SamplePosition == 0 )
{
if( Hydrogen::get_instance()->getMidiOutput() != NULL ){
Hydrogen::get_instance()->getMidiOutput()->handleQueueNote( pNote );
}
}
if ( fTotalPitch == 0.0 && pSample->get_sample_rate() == audio_output->getSampleRate() ) // NO RESAMPLE
nReturnValues[nReturnValueIndex] = __render_note_no_resample( pSample, pNote, pSelectedLayer, pCompo, pMainCompo, nBufferSize, nInitialSilence, cost_L, cost_R, cost_track_L, cost_track_R, pSong );
else // RESAMPLE
nReturnValues[nReturnValueIndex] = __render_note_resample( pSample, pNote, pSelectedLayer, pCompo, pMainCompo, nBufferSize, nInitialSilence, cost_L, cost_R, cost_track_L, cost_track_R, fLayerPitch, pSong );
nReturnValueIndex++;
}
for ( unsigned i = 0 ; i < pInstr->get_components()->size() ; i++ )
if ( !nReturnValues[i] ) return false;
return true;
}
