engines/sfz/SfzSignalUnitRack.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2011 Grigor Iliev                                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "SfzSignalUnitRack.h"
#include "Voice.h"

namespace LinuxSampler { namespace sfz {
    
    SfzSignalUnit::SfzSignalUnit(SfzSignalUnitRack* rack): SignalUnit(rack), pVoice(rack->pVoice) {
        
    }
    
    double SfzSignalUnit::GetSampleRate() {
        return pVoice->GetSampleRate() / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;
    }
    
    
    void EGv1Unit::Trigger() {
        ::sfz::Region* const pRegion = pVoice->pRegion;
        
        // the length of the decay and release curves are dependent on the velocity
        const double velrelease = 1 / pVoice->GetVelocityRelease(pVoice->MIDIVelocity);

        // set the delay trigger
        uiDelayTrigger = (pRegion->ampeg_delay + pRegion->ampeg_vel2delay * velrelease) * GetSampleRate();
        
        EG.trigger(uint(pRegion->ampeg_start * 10),
                   std::max(0.0, pRegion->ampeg_attack + pRegion->ampeg_vel2attack * velrelease),
                   std::max(0.0, pRegion->ampeg_hold + pRegion->ampeg_vel2hold * velrelease),
                   std::max(0.0, pRegion->ampeg_decay + pRegion->ampeg_vel2decay * velrelease),
                   uint(std::min(std::max(0.0, 10 * (pRegion->ampeg_sustain + pRegion->ampeg_vel2sustain * velrelease)), 1000.0)),
                   std::max(0.0, pRegion->ampeg_release + pRegion->ampeg_vel2release * velrelease),
                   GetSampleRate());
    }
    
    
    void EGv2Unit::Trigger() {
        EG.trigger(*pEGInfo, GetSampleRate(), pVoice->MIDIVelocity);
    }
    
    
    void PitchEGUnit::Trigger() {
        ::sfz::Region* const pRegion = pVoice->pRegion;
        depth = pRegion->pitcheg_depth;
        
        // the length of the decay and release curves are dependent on the velocity
        const double velrelease = 1 / pVoice->GetVelocityRelease(pVoice->MIDIVelocity);

        // set the delay trigger
        uiDelayTrigger = (pRegion->pitcheg_delay + pRegion->pitcheg_vel2delay * velrelease) * GetSampleRate();
        
        EG.trigger(uint(pRegion->pitcheg_start * 10),
                   std::max(0.0, pRegion->pitcheg_attack + pRegion->pitcheg_vel2attack * velrelease),
                   std::max(0.0, pRegion->pitcheg_hold + pRegion->pitcheg_vel2hold * velrelease),
                   std::max(0.0, pRegion->pitcheg_decay + pRegion->pitcheg_vel2decay * velrelease),
                   uint(std::min(std::max(0.0, 10 * (pRegion->pitcheg_sustain + pRegion->pitcheg_vel2sustain * velrelease)), 1000.0)),
                   std::max(0.0, pRegion->pitcheg_release + pRegion->pitcheg_vel2release * velrelease),
                   GetSampleRate());
    }
    

    void LFOUnit::Increment() {
        if (DelayStage()) return;
        
        SignalUnit::Increment();
        
        Level = lfo.render();
    }
    
    void LFOUnit::Trigger() {
        //reset
        Level = 0;
        
        // set the delay trigger
        uiDelayTrigger = pLfoInfo->delay * GetSampleRate();
    }
    
    void LFOv2Unit::Trigger() {
        LFOUnit::Trigger();
        
        lfo.trigger (
            pLfoInfo->freq,
            start_level_mid,
            1, 0, false, GetSampleRate()
        );
        lfo.update(0);
    }


    EndpointUnit::EndpointUnit(SfzSignalUnitRack* rack): EndpointSignalUnit(rack) {
        
    }
    
    SfzSignalUnitRack* const EndpointUnit::GetRack() {
        return static_cast<SfzSignalUnitRack* const>(pRack);
    }
    
    void EndpointUnit::Trigger() {
        
    }
    
    bool EndpointUnit::Active() {
        if (GetRack()->suVolEG.Active()) return true;
        
        bool b = false;
        for (int i = 0; i < GetRack()->volEGs.size(); i++) {
            if (GetRack()->volEGs[i]->Active()) { b = true; break; }
        }
        
        return b;
    }
    
    float EndpointUnit::GetVolume() {
        float vol = GetRack()->suVolEG.Active() ? GetRack()->suVolEG.GetLevel() : 0;
        
        for (int i = 0; i < GetRack()->volEGs.size(); i++) {
            EGv2Unit* eg = GetRack()->volEGs[i];
            if (!eg->Active()) continue;
            vol += eg->GetLevel() * (eg->pEGInfo->amplitude / 100.0f);
        }
        
        return vol;
    }
    
    float EndpointUnit::GetFilterCutoff() {
        float val = 1;
        
        for (int i = 0; i < GetRack()->filLFOs.size(); i++) {
            LFOv2Unit* lfo = GetRack()->filLFOs[i];
            if (!lfo->Active()) continue;
            
            float f = lfo->GetLevel() * lfo->pLfoInfo->cutoff;
            val *= RTMath::CentsToFreqRatioUnlimited(f);
        }
        
        return val;
    }
    
    float EndpointUnit::GetPitch() {
        EGv1Unit* u = &(GetRack()->suPitchEG);
        double pitchEg = u->Active() ? RTMath::CentsToFreqRatioUnlimited(u->GetLevel() * u->depth) : 1;
        return pitchEg;
    }
    
    float EndpointUnit::GetResonance() {
         float val = 0;
        
        for (int i = 0; i < GetRack()->resLFOs.size(); i++) {
            LFOv2Unit* lfo = GetRack()->resLFOs[i];
            if (!lfo->Active()) continue;
            
            val += lfo->GetLevel() * lfo->pLfoInfo->resonance;
        }
        
        return val;
    }
    
    float EndpointUnit::GetPan() {
        float pan = 0;
        
        for (int i = 0; i < GetRack()->panLFOs.size(); i++) {
            LFOv2Unit* lfo = GetRack()->panLFOs[i];
            if (!lfo->Active()) continue;
            
            pan += lfo->GetLevel() * lfo->pLfoInfo->pan;
        }
        
        if(pan < -100) return -100;
        if(pan >  100) return  100;
        
        return pan;
    }
    
    
    SfzSignalUnitRack::SfzSignalUnitRack(Voice* voice)
        : SignalUnitRack(MaxUnitCount), pVoice(voice), suEndpoint(this), suVolEG(this), suPitchEG(this),
        EGs(maxEgCount), volEGs(maxEgCount), pitchEGs(maxEgCount),
        LFOs(maxLfoCount), filLFOs(maxLfoCount), resLFOs(maxLfoCount), panLFOs(maxLfoCount)
    {
        suEndpoint.pVoice = suVolEG.pVoice = suPitchEG.pVoice = voice;
        
        for (int i = 0; i < EGs.capacity(); i++) {
            EGs[i] = new EGv2Unit(this);
            EGs[i]->pVoice = voice;
        }
        
        for (int i = 0; i < LFOs.capacity(); i++) {
            LFOs[i] = new LFOv2Unit(this);
            LFOs[i]->pVoice = voice;
        }
    }
    
    SfzSignalUnitRack::~SfzSignalUnitRack() {
        for (int i = 0; i < EGs.capacity(); i++) {
            delete EGs[i]; EGs[i] = NULL;
        }
        
        for (int i = 0; i < LFOs.capacity(); i++) {
            delete LFOs[i]; LFOs[i] = NULL;
        }
    }
    
    void SfzSignalUnitRack::Trigger() {
        EGs.clear();
        volEGs.clear();
        pitchEGs.clear();
        
        LFOs.clear();
        filLFOs.clear();
        resLFOs.clear();
        panLFOs.clear();
        
        ::sfz::Region* const pRegion = pVoice->pRegion;
        
        for (int i = 0; i < pRegion->eg.size(); i++) {
            if (pRegion->eg[i].node.size() == 0) continue;
            
            if(EGs.size() < EGs.capacity()) {
                EGv2Unit eg(this);
                eg.pEGInfo = &(pRegion->eg[i]);
                EGs.increment()->Copy(eg);
            } else { std::cerr << "Maximum number of EGs reached!" << std::endl; break; }
            
            if (pRegion->eg[i].amplitude > 0) {
                if(volEGs.size() < volEGs.capacity()) volEGs.add(EGs[EGs.size() - 1]);
                else std::cerr << "Maximum number of EGs reached!" << std::endl;
            }
        }
        
        if (pRegion->ampeg_sustain == -1) {
            if (volEGs.size() > 0) pRegion->ampeg_sustain = 0;
            else pRegion->ampeg_sustain = 100;
        }
        
        // LFO
        for (int i = 0; i < pRegion->lfos.size(); i++) {
            if (pRegion->lfos[i].freq == -1) continue; // Not initialized
            
            if(LFOs.size() < LFOs.capacity()) {
                LFOv2Unit lfo(this);
                lfo.pLfoInfo = &(pRegion->lfos[i]);
                LFOs.increment()->Copy(lfo);
            } else { std::cerr << "Maximum number of LFOs reached!" << std::endl; break; }
            
            if (pRegion->lfos[i].cutoff != 0) {
                if(filLFOs.size() < filLFOs.capacity()) filLFOs.add(LFOs[LFOs.size() - 1]);
                else std::cerr << "Maximum number of LFOs reached!" << std::endl;
            }
            
            if (pRegion->lfos[i].resonance != 0) {
                if(resLFOs.size() < resLFOs.capacity()) resLFOs.add(LFOs[LFOs.size() - 1]);
                else std::cerr << "Maximum number of LFOs reached!" << std::endl;
            }
            
            if (pRegion->lfos[i].pan != 0) {
                if(panLFOs.size() < panLFOs.capacity()) panLFOs.add(LFOs[LFOs.size() - 1]);
                else std::cerr << "Maximum number of LFOs reached!" << std::endl;
            }
        }
        
        Units.clear();
        
        Units.add(&suVolEG);
        Units.add(&suPitchEG);
        
        for (int i = 0; i < EGs.size(); i++) {
            Units.add(EGs[i]);
        }
        
        for (int i = 0; i < LFOs.size(); i++) {
            Units.add(LFOs[i]);
        }
        
        Units.add(&suEndpoint);
        
        SignalUnitRack::Trigger();
    }
    
    EndpointSignalUnit* SfzSignalUnitRack::GetEndpointUnit() {
        return &suEndpoint;
    }
    
    void SfzSignalUnitRack::EnterFadeOutStage() {
        suVolEG.EG.enterFadeOutStage();
        
        for (int i = 0; i < volEGs.size(); i++) {
            volEGs[i]->EG.enterFadeOutStage();
        }
    }
    
}} // namespace LinuxSampler::sfz
1	iliev	2218	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2011 Grigor Iliev *
6			* *
7			* This program is free software; you can redistribute it and/or modify *
8			* it under the terms of the GNU General Public License as published by *
9			* the Free Software Foundation; either version 2 of the License, or *
10			* (at your option) any later version. *
11			* *
12			* This program is distributed in the hope that it will be useful, *
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15			* GNU General Public License for more details. *
16			* *
17			* You should have received a copy of the GNU General Public License *
18			* along with this program; if not, write to the Free Software *
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20			* MA 02111-1307 USA *
21			***************************************************************************/
22
23			#include "SfzSignalUnitRack.h"
24			#include "Voice.h"
25
26			namespace LinuxSampler { namespace sfz {
27
28			SfzSignalUnit::SfzSignalUnit(SfzSignalUnitRack* rack): SignalUnit(rack), pVoice(rack->pVoice) {
29
30			}
31
32			double SfzSignalUnit::GetSampleRate() {
33			return pVoice->GetSampleRate() / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;
34			}
35
36
37			void EGv1Unit::Trigger() {
38			::sfz::Region* const pRegion = pVoice->pRegion;
39	iliev	2220
40	iliev	2218	// the length of the decay and release curves are dependent on the velocity
41			const double velrelease = 1 / pVoice->GetVelocityRelease(pVoice->MIDIVelocity);
42
43	iliev	2220	// set the delay trigger
44			uiDelayTrigger = (pRegion->ampeg_delay + pRegion->ampeg_vel2delay * velrelease) * GetSampleRate();
45
46	iliev	2218	EG.trigger(uint(pRegion->ampeg_start * 10),
47			std::max(0.0, pRegion->ampeg_attack + pRegion->ampeg_vel2attack * velrelease),
48			std::max(0.0, pRegion->ampeg_hold + pRegion->ampeg_vel2hold * velrelease),
49			std::max(0.0, pRegion->ampeg_decay + pRegion->ampeg_vel2decay * velrelease),
50			uint(std::min(std::max(0.0, 10 * (pRegion->ampeg_sustain + pRegion->ampeg_vel2sustain * velrelease)), 1000.0)),
51			std::max(0.0, pRegion->ampeg_release + pRegion->ampeg_vel2release * velrelease),
52			GetSampleRate());
53			}
54
55	iliev	2220
56	iliev	2218	void EGv2Unit::Trigger() {
57			EG.trigger(*pEGInfo, GetSampleRate(), pVoice->MIDIVelocity);
58			}
59	iliev	2219
60	iliev	2220
61			void PitchEGUnit::Trigger() {
62			::sfz::Region* const pRegion = pVoice->pRegion;
63			depth = pRegion->pitcheg_depth;
64
65			// the length of the decay and release curves are dependent on the velocity
66			const double velrelease = 1 / pVoice->GetVelocityRelease(pVoice->MIDIVelocity);
67	iliev	2218
68	iliev	2220	// set the delay trigger
69			uiDelayTrigger = (pRegion->pitcheg_delay + pRegion->pitcheg_vel2delay * velrelease) * GetSampleRate();
70
71			EG.trigger(uint(pRegion->pitcheg_start * 10),
72			std::max(0.0, pRegion->pitcheg_attack + pRegion->pitcheg_vel2attack * velrelease),
73			std::max(0.0, pRegion->pitcheg_hold + pRegion->pitcheg_vel2hold * velrelease),
74			std::max(0.0, pRegion->pitcheg_decay + pRegion->pitcheg_vel2decay * velrelease),
75			uint(std::min(std::max(0.0, 10 * (pRegion->pitcheg_sustain + pRegion->pitcheg_vel2sustain * velrelease)), 1000.0)),
76			std::max(0.0, pRegion->pitcheg_release + pRegion->pitcheg_vel2release * velrelease),
77			GetSampleRate());
78			}
79
80
81	iliev	2219	void LFOUnit::Increment() {
82			if (DelayStage()) return;
83
84			SignalUnit::Increment();
85
86			Level = lfo.render();
87			}
88
89			void LFOUnit::Trigger() {
90			//reset
91			Level = 0;
92
93			// set the delay trigger
94	iliev	2220	uiDelayTrigger = pLfoInfo->delay * GetSampleRate();
95	iliev	2219	}
96
97			void LFOv2Unit::Trigger() {
98			LFOUnit::Trigger();
99
100			lfo.trigger (
101			pLfoInfo->freq,
102			start_level_mid,
103			1, 0, false, GetSampleRate()
104			);
105			lfo.update(0);
106			}
107	iliev	2218
108	iliev	2219
109	iliev	2218	EndpointUnit::EndpointUnit(SfzSignalUnitRack* rack): EndpointSignalUnit(rack) {
110
111			}
112
113			SfzSignalUnitRack* const EndpointUnit::GetRack() {
114			return static_cast<SfzSignalUnitRack* const>(pRack);
115			}
116
117			void EndpointUnit::Trigger() {
118
119			}
120
121			bool EndpointUnit::Active() {
122			if (GetRack()->suVolEG.Active()) return true;
123
124			bool b = false;
125			for (int i = 0; i < GetRack()->volEGs.size(); i++) {
126			if (GetRack()->volEGs[i]->Active()) { b = true; break; }
127			}
128
129			return b;
130			}
131
132			float EndpointUnit::GetVolume() {
133			float vol = GetRack()->suVolEG.Active() ? GetRack()->suVolEG.GetLevel() : 0;
134
135			for (int i = 0; i < GetRack()->volEGs.size(); i++) {
136			EGv2Unit* eg = GetRack()->volEGs[i];
137			if (!eg->Active()) continue;
138			vol += eg->GetLevel() * (eg->pEGInfo->amplitude / 100.0f);
139			}
140
141			return vol;
142			}
143
144			float EndpointUnit::GetFilterCutoff() {
145	iliev	2219	float val = 1;
146
147			for (int i = 0; i < GetRack()->filLFOs.size(); i++) {
148			LFOv2Unit* lfo = GetRack()->filLFOs[i];
149			if (!lfo->Active()) continue;
150
151			float f = lfo->GetLevel() * lfo->pLfoInfo->cutoff;
152			val *= RTMath::CentsToFreqRatioUnlimited(f);
153			}
154
155			return val;
156	iliev	2218	}
157
158			float EndpointUnit::GetPitch() {
159	iliev	2220	EGv1Unit* u = &(GetRack()->suPitchEG);
160			double pitchEg = u->Active() ? RTMath::CentsToFreqRatioUnlimited(u->GetLevel() * u->depth) : 1;
161			return pitchEg;
162	iliev	2218	}
163
164			float EndpointUnit::GetResonance() {
165	iliev	2219	float val = 0;
166
167			for (int i = 0; i < GetRack()->resLFOs.size(); i++) {
168			LFOv2Unit* lfo = GetRack()->resLFOs[i];
169			if (!lfo->Active()) continue;
170
171			val += lfo->GetLevel() * lfo->pLfoInfo->resonance;
172			}
173
174			return val;
175	iliev	2218	}
176
177	iliev	2219	float EndpointUnit::GetPan() {
178			float pan = 0;
179
180			for (int i = 0; i < GetRack()->panLFOs.size(); i++) {
181			LFOv2Unit* lfo = GetRack()->panLFOs[i];
182			if (!lfo->Active()) continue;
183
184			pan += lfo->GetLevel() * lfo->pLfoInfo->pan;
185			}
186
187			if(pan < -100) return -100;
188			if(pan > 100) return 100;
189
190			return pan;
191			}
192	iliev	2218
193	iliev	2219
194	iliev	2218	SfzSignalUnitRack::SfzSignalUnitRack(Voice* voice)
195	iliev	2220	: SignalUnitRack(MaxUnitCount), pVoice(voice), suEndpoint(this), suVolEG(this), suPitchEG(this),
196	iliev	2219	EGs(maxEgCount), volEGs(maxEgCount), pitchEGs(maxEgCount),
197			LFOs(maxLfoCount), filLFOs(maxLfoCount), resLFOs(maxLfoCount), panLFOs(maxLfoCount)
198	iliev	2218	{
199	iliev	2220	suEndpoint.pVoice = suVolEG.pVoice = suPitchEG.pVoice = voice;
200	iliev	2218
201			for (int i = 0; i < EGs.capacity(); i++) {
202			EGs[i] = new EGv2Unit(this);
203			EGs[i]->pVoice = voice;
204			}
205	iliev	2219
206			for (int i = 0; i < LFOs.capacity(); i++) {
207			LFOs[i] = new LFOv2Unit(this);
208			LFOs[i]->pVoice = voice;
209			}
210	iliev	2218	}
211
212			SfzSignalUnitRack::~SfzSignalUnitRack() {
213	iliev	2219	for (int i = 0; i < EGs.capacity(); i++) {
214	iliev	2218	delete EGs[i]; EGs[i] = NULL;
215			}
216	iliev	2219
217			for (int i = 0; i < LFOs.capacity(); i++) {
218			delete LFOs[i]; LFOs[i] = NULL;
219			}
220	iliev	2218	}
221
222			void SfzSignalUnitRack::Trigger() {
223			EGs.clear();
224			volEGs.clear();
225			pitchEGs.clear();
226
227	iliev	2219	LFOs.clear();
228			filLFOs.clear();
229			resLFOs.clear();
230			panLFOs.clear();
231
232	iliev	2218	::sfz::Region* const pRegion = pVoice->pRegion;
233
234	iliev	2219	for (int i = 0; i < pRegion->eg.size(); i++) {
235	iliev	2218	if (pRegion->eg[i].node.size() == 0) continue;
236
237			if(EGs.size() < EGs.capacity()) {
238			EGv2Unit eg(this);
239			eg.pEGInfo = &(pRegion->eg[i]);
240			EGs.increment()->Copy(eg);
241			} else { std::cerr << "Maximum number of EGs reached!" << std::endl; break; }
242
243			if (pRegion->eg[i].amplitude > 0) {
244			if(volEGs.size() < volEGs.capacity()) volEGs.add(EGs[EGs.size() - 1]);
245			else std::cerr << "Maximum number of EGs reached!" << std::endl;
246			}
247			}
248
249			if (pRegion->ampeg_sustain == -1) {
250			if (volEGs.size() > 0) pRegion->ampeg_sustain = 0;
251			else pRegion->ampeg_sustain = 100;
252			}
253
254	iliev	2219	// LFO
255			for (int i = 0; i < pRegion->lfos.size(); i++) {
256			if (pRegion->lfos[i].freq == -1) continue; // Not initialized
257
258			if(LFOs.size() < LFOs.capacity()) {
259			LFOv2Unit lfo(this);
260			lfo.pLfoInfo = &(pRegion->lfos[i]);
261			LFOs.increment()->Copy(lfo);
262			} else { std::cerr << "Maximum number of LFOs reached!" << std::endl; break; }
263
264			if (pRegion->lfos[i].cutoff != 0) {
265			if(filLFOs.size() < filLFOs.capacity()) filLFOs.add(LFOs[LFOs.size() - 1]);
266			else std::cerr << "Maximum number of LFOs reached!" << std::endl;
267			}
268
269			if (pRegion->lfos[i].resonance != 0) {
270			if(resLFOs.size() < resLFOs.capacity()) resLFOs.add(LFOs[LFOs.size() - 1]);
271			else std::cerr << "Maximum number of LFOs reached!" << std::endl;
272			}
273
274			if (pRegion->lfos[i].pan != 0) {
275			if(panLFOs.size() < panLFOs.capacity()) panLFOs.add(LFOs[LFOs.size() - 1]);
276			else std::cerr << "Maximum number of LFOs reached!" << std::endl;
277			}
278			}
279
280	iliev	2218	Units.clear();
281
282			Units.add(&suVolEG);
283	iliev	2220	Units.add(&suPitchEG);
284	iliev	2218
285	iliev	2219	for (int i = 0; i < EGs.size(); i++) {
286	iliev	2218	Units.add(EGs[i]);
287			}
288
289	iliev	2219	for (int i = 0; i < LFOs.size(); i++) {
290			Units.add(LFOs[i]);
291			}
292
293	iliev	2218	Units.add(&suEndpoint);
294
295			SignalUnitRack::Trigger();
296			}
297
298			EndpointSignalUnit* SfzSignalUnitRack::GetEndpointUnit() {
299			return &suEndpoint;
300			}
301
302			void SfzSignalUnitRack::EnterFadeOutStage() {
303			suVolEG.EG.enterFadeOutStage();
304
305			for (int i = 0; i < volEGs.size(); i++) {
306			volEGs[i]->EG.enterFadeOutStage();
307			}
308			}
309
310			}} // namespace LinuxSampler::sfz