Example #1
0
/// 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;
}
Example #2
0
/// Render a note
/// Return 0: the note is not ended
/// Return 1: the note is ended
unsigned 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;
	}

	int nReturnValue = 0;

	for (std::vector<InstrumentComponent*>::iterator it = pInstr->get_components()->begin() ; it !=pInstr->get_components()->end(); ++it) {
		InstrumentComponent *pCompo = *it;
		DrumkitComponent* pMainCompo = 0;

		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 = NULL;
		for ( unsigned nLayer = 0; nLayer < MAX_LAYERS; ++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() ) ) {
				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 );
			nReturnValue = 1;
			continue;
		}

		if ( pNote->get_sample_position( pCompo->get_drumkit_componentID() ) >= pSample->get_frames() ) {
			WARNINGLOG( "sample position out of bounds. The layer has been resized during note play?" );
			nReturnValue = 1;
			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();
					nReturnValue = 1;
					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);

		if ( pInstr->is_muted() || pSong->__is_muted || pMainCompo->is_muted() ) {	// is instrument 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...
			cost_L = cost_L * 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_velocity();		// note velocity
			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 )pNote->get_sample_position(pCompo->get_drumkit_componentID()) == 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
			if ( __render_note_no_resample( pSample, pNote, pCompo, pMainCompo, nBufferSize, nInitialSilence, cost_L, cost_R, cost_track_L, cost_track_R, pSong ) == 1 )
				nReturnValue = 1;
		} else {	// RESAMPLE
			if ( __render_note_resample( pSample, pNote, pCompo, pMainCompo, nBufferSize, nInitialSilence, cost_L, cost_R, cost_track_L, cost_track_R, fLayerPitch, pSong ) == 1 )
				nReturnValue = 1;
		}
	}

	return nReturnValue;
}