/[svn]/linuxsampler/trunk/src/engines/sfz/Voice.cpp
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Contents of /linuxsampler/trunk/src/engines/sfz/Voice.cpp

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Revision 3444 - (show annotations) (download)
Sun Dec 23 19:32:11 2018 UTC (7 months, 3 weeks ago) by schoenebeck
File size: 13516 byte(s)
* Only play release trigger samples on sustain pedal up if this behaviour
  was explicitly requested by the instrument (otherwise only on note-off).
* Bumped version (2.1.0.svn2).

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 - 2008 Christian Schoenebeck *
7 * Copyright (C) 2009 - 2015 Christian Schoenebeck and Grigor Iliev *
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details. *
18 * *
19 * You should have received a copy of the GNU General Public License *
20 * along with this program; if not, write to the Free Software *
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22 * MA 02111-1307 USA *
23 ***************************************************************************/
24
25 #include "Voice.h"
26
27 #include "Engine.h"
28 #include "EngineChannel.h"
29
30 #define LN_10_DIV_20 0.115129254649702
31
32 namespace LinuxSampler { namespace sfz {
33
34 typedef LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> SfzVoiceBase;
35
36 Voice::Voice(): SfzVoiceBase(&SignalRack), SignalRack(this) {
37 pEngine = NULL;
38 bEqSupport = true;
39 }
40
41 Voice::~Voice() {
42
43 }
44
45 EngineChannel* Voice::GetSfzEngineChannel() {
46 return static_cast<EngineChannel*>(pEngineChannel);
47 }
48
49 void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50 Engine* engine = static_cast<Engine*>(pEngine);
51 this->pEngine = engine;
52 this->pDiskThread = engine->pDiskThread;
53 dmsg(6,("Voice::SetEngine()\n"));
54 }
55
56 Voice::SampleInfo Voice::GetSampleInfo() {
57 SampleInfo si;
58 si.SampleRate = pSample->GetSampleRate();
59 si.ChannelCount = pSample->GetChannelCount();
60 si.FrameSize = pSample->GetFrameSize();
61 si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
62 si.TotalFrameCount = (uint)pSample->GetTotalFrameCount();
63
64 si.HasLoops = pRegion->HasLoop();
65 si.LoopStart = pRegion->GetLoopStart();
66 si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
67 si.LoopPlayCount = pRegion->GetLoopCount();
68 si.Unpitched = pRegion->pitch_keytrack == 0;
69 return si;
70 }
71
72 Voice::RegionInfo Voice::GetRegionInfo() {
73 RegionInfo ri;
74 ri.UnityNote = pRegion->pitch_keycenter;
75 ri.FineTune = pRegion->tune + pRegion->transpose * 100;
76 ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
77 ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;
78
79 ri.VCFEnabled = pRegion->cutoff;
80 switch (pRegion->fil_type) {
81 case ::sfz::LPF_1P:
82 ri.VCFType = Filter::vcf_type_1p_lowpass;
83 break;
84 case ::sfz::LPF_2P:
85 ri.VCFType = Filter::vcf_type_2p_lowpass;
86 break;
87 case ::sfz::LPF_4P:
88 ri.VCFType = Filter::vcf_type_4p_lowpass;
89 break;
90 case ::sfz::LPF_6P:
91 ri.VCFType = Filter::vcf_type_6p_lowpass;
92 break;
93 case ::sfz::HPF_1P:
94 ri.VCFType = Filter::vcf_type_1p_highpass;
95 break;
96 case ::sfz::HPF_2P:
97 ri.VCFType = Filter::vcf_type_2p_highpass;
98 break;
99 case ::sfz::HPF_4P:
100 ri.VCFType = Filter::vcf_type_4p_highpass;
101 break;
102 case ::sfz::HPF_6P:
103 ri.VCFType = Filter::vcf_type_6p_highpass;
104 break;
105 case ::sfz::BPF_1P:
106 case ::sfz::BPF_2P:
107 ri.VCFType = Filter::vcf_type_2p_bandpass;
108 break;
109 case ::sfz::BRF_1P:
110 case ::sfz::BRF_2P:
111 ri.VCFType = Filter::vcf_type_2p_bandreject;
112 break;
113 case ::sfz::APF_1P:
114 case ::sfz::PKF_2P:
115 default:
116 ri.VCFEnabled = false;
117 break;
118 }
119
120 ri.VCFResonance = pRegion->resonance;
121
122 // rt_decay is in dB. Precalculate a suitable value for exp in
123 // GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
124 ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
125
126 return ri;
127 }
128
129 Voice::InstrumentInfo Voice::GetInstrumentInfo() {
130 InstrumentInfo ii;
131 ii.FineTune = 0; // TODO:
132 ii.PitchbendRange = 2; // TODO:
133
134 return ii;
135 }
136
137 double Voice::GetSampleAttenuation() {
138 return exp(LN_10_DIV_20 * pRegion->volume) * pRegion->amplitude / 100;
139 }
140
141 double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
142 float offset = -pRegion->amp_veltrack;
143 if (offset <= 0) offset += 100;
144 return (offset + pRegion->amp_veltrack * pRegion->amp_velcurve[MIDIKeyVelocity]) / 100;
145 }
146
147 double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
148 return 127.0 / MIDIKeyVelocity;
149 }
150
151 void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
152 /*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
153 if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
154 itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
155 CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
156 }
157 }*/ // TODO: ^^^
158 }
159
160 void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
161 //TODO: ...
162 }
163
164 void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
165 //TODO: ...
166 }
167
168 double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
169 /*float crossfadeVolume;
170 switch (pRegion->AttenuationController.type) {
171 case ::gig::attenuation_ctrl_t::type_channelaftertouch:
172 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
173 break;
174 case ::gig::attenuation_ctrl_t::type_velocity:
175 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
176 break;
177 case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
178 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
179 break;
180 case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
181 default:
182 crossfadeVolume = 1.0f;
183 }
184
185 return crossfadeVolume;*/ // TODO: ^^^
186 return 1.0f;
187 }
188
189 double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
190 /*double eg1controllervalue = 0;
191 switch (pRegion->EG1Controller.type) {
192 case ::gig::eg1_ctrl_t::type_none: // no controller defined
193 eg1controllervalue = 0;
194 break;
195 case ::gig::eg1_ctrl_t::type_channelaftertouch:
196 eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
197 break;
198 case ::gig::eg1_ctrl_t::type_velocity:
199 eg1controllervalue = MIDIKeyVelocity;
200 break;
201 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
202 eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
203 break;
204 }
205 if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
206
207 return eg1controllervalue;*/ // TODO: ^^^
208 return 0;
209 }
210
211 Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
212 /*EGInfo eg;
213 // (eg1attack is different from the others)
214 eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
215 1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
216 1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
217 eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
218 eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
219
220 return eg;*/ // TODO: ^^^
221 EGInfo eg;
222 eg.Attack = 1.0;
223 eg.Decay = 1.0;
224 eg.Release = 1.0;
225 return eg;
226 }
227
228 double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
229 /*double eg2controllervalue = 0;
230 switch (pRegion->EG2Controller.type) {
231 case ::gig::eg2_ctrl_t::type_none: // no controller defined
232 eg2controllervalue = 0;
233 break;
234 case ::gig::eg2_ctrl_t::type_channelaftertouch:
235 eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
236 break;
237 case ::gig::eg2_ctrl_t::type_velocity:
238 eg2controllervalue = MIDIKeyVelocity;
239 break;
240 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
241 eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
242 break;
243 }
244 if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
245
246 return eg2controllervalue;*/ // TODO: ^^^
247 return 0;
248 }
249
250 Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
251 /*EGInfo eg;
252 eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
253 eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
254 eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
255
256 return eg;*/ // TODO: ^^^
257 EGInfo eg;
258 eg.Attack = 1.0;
259 eg.Decay = 1.0;
260 eg.Release = 1.0;
261 return eg;
262 }
263
264 float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
265 float cutoff = *pRegion->cutoff;
266 cutoff *= RTMath::CentsToFreqRatioUnlimited(
267 MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
268 (MIDIKey() - pRegion->fil_keycenter) * pRegion->fil_keytrack);
269 return cutoff;
270 }
271
272 float Voice::CalculateFinalCutoff(float cutoffBase) {
273 float cutoff = cutoffBase;
274 if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
275 return cutoff;
276 }
277
278 float Voice::GetReleaseTriggerAttenuation(float noteLength) {
279 // pow(10, -rt_decay * noteLength / 20):
280 return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
281 }
282
283 release_trigger_t Voice::GetReleaseTriggerFlags() {
284 return release_trigger_noteoff;
285 }
286
287 void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
288 dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
289 if (itEvent->Type == Event::type_control_change ||
290 (Type & Voice::type_controller_triggered) ||
291 itEvent->Param.Note.Key != HostKey()) {
292 dmsg(4,("Voice %p - kill", (void*)this));
293 if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
294 // turn off the voice by entering release envelope stage
295 EnterReleaseStage();
296 } else {
297 // kill the voice fast
298 SignalRack.EnterFadeOutStage();
299 }
300 }
301 }
302
303 void Voice::SetSampleStartOffset() {
304 AbstractVoice::SetSampleStartOffset();
305
306 if (DiskVoice && Pos > pSample->MaxOffset) {
307 // The offset is applied to the RAM buffer
308 finalSynthesisParameters.dPos = 0;
309 Pos = 0;
310 }
311 }
312
313 void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
314 SignalRack.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
315 }
316
317 int Voice::CalculatePan(uint8_t pan) {
318 // the value isn't limited to [0, 127] here, as this is done
319 // later in SignalUnit.CalculatePan
320 return pan + RgnInfo.Pan;
321 }
322
323 }} // namespace LinuxSampler::sfz

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