/[svn]/linuxsampler/trunk/src/engines/gig/EngineChannel.cpp
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Annotation of /linuxsampler/trunk/src/engines/gig/EngineChannel.cpp

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Revision 1844 - (hide annotations) (download)
Mon Feb 23 18:29:50 2009 UTC (15 years, 1 month ago) by persson
File size: 40821 byte(s)
* fixed crash when removing channel with active voices (#116)

1 schoenebeck 411 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5     * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 persson 1844 * Copyright (C) 2005 - 2009 Christian Schoenebeck *
7 schoenebeck 411 * *
8     * This program is free software; you can redistribute it and/or modify *
9     * it under the terms of the GNU General Public License as published by *
10     * the Free Software Foundation; either version 2 of the License, or *
11     * (at your option) any later version. *
12     * *
13     * This program is distributed in the hope that it will be useful, *
14     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16     * GNU General Public License for more details. *
17     * *
18     * You should have received a copy of the GNU General Public License *
19     * along with this program; if not, write to the Free Software *
20     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21     * MA 02111-1307 USA *
22     ***************************************************************************/
23    
24     #include "EngineChannel.h"
25    
26 schoenebeck 1424 #include "../../common/global_private.h"
27 iliev 1761 #include "../../Sampler.h"
28 schoenebeck 1424
29 persson 438 namespace LinuxSampler { namespace gig {
30 schoenebeck 411
31 persson 1646 EngineChannel::EngineChannel() :
32 schoenebeck 1659 InstrumentChangeCommandReader(InstrumentChangeCommand),
33 schoenebeck 1662 virtualMidiDevicesReader_AudioThread(virtualMidiDevices),
34     virtualMidiDevicesReader_MidiThread(virtualMidiDevices)
35 schoenebeck 1659 {
36 schoenebeck 411 pMIDIKeyInfo = new midi_key_info_t[128];
37     pEngine = NULL;
38     pInstrument = NULL;
39 schoenebeck 460 pEvents = NULL; // we allocate when we retrieve the right Engine object
40 schoenebeck 970 pEventQueue = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
41 schoenebeck 411 pActiveKeys = new Pool<uint>(128);
42     for (uint i = 0; i < 128; i++) {
43     pMIDIKeyInfo[i].pActiveVoices = NULL; // we allocate when we retrieve the right Engine object
44     pMIDIKeyInfo[i].KeyPressed = false;
45     pMIDIKeyInfo[i].Active = false;
46     pMIDIKeyInfo[i].ReleaseTrigger = false;
47     pMIDIKeyInfo[i].pEvents = NULL; // we allocate when we retrieve the right Engine object
48 schoenebeck 473 pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
49 persson 438 pMIDIKeyInfo[i].RoundRobinIndex = 0;
50 schoenebeck 411 }
51     InstrumentIdx = -1;
52     InstrumentStat = -1;
53 schoenebeck 1001 pChannelLeft = NULL;
54     pChannelRight = NULL;
55 schoenebeck 411 AudioDeviceChannelLeft = -1;
56     AudioDeviceChannelRight = -1;
57 schoenebeck 675 pMidiInputPort = NULL;
58     midiChannel = midi_chan_all;
59 schoenebeck 670 ResetControllers();
60 schoenebeck 829 SoloMode = false;
61     PortamentoMode = false;
62     PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
63 iliev 1835
64     // reset the instrument change command struct (need to be done
65     // twice, as it is double buffered)
66     {
67     instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
68     cmd.pDimRegionsInUse = NULL;
69     cmd.pInstrument = NULL;
70     cmd.bChangeInstrument = false;
71     }
72     {
73     instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
74     cmd.pDimRegionsInUse = NULL;
75     cmd.pInstrument = NULL;
76     cmd.bChangeInstrument = false;
77     }
78 schoenebeck 411 }
79    
80     EngineChannel::~EngineChannel() {
81 schoenebeck 460 DisconnectAudioOutputDevice();
82 iliev 1826
83     // In case the channel was removed before the instrument was
84     // fully loaded, try to give back instrument again (see bug #113)
85     instrument_change_command_t& cmd = ChangeInstrument(NULL);
86     if (cmd.pInstrument) {
87     Engine::instruments.HandBack(cmd.pInstrument, this);
88     }
89     ///////
90    
91 schoenebeck 411 if (pEventQueue) delete pEventQueue;
92     if (pActiveKeys) delete pActiveKeys;
93     if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
94 schoenebeck 1001 RemoveAllFxSends();
95 schoenebeck 411 }
96    
97     /**
98 schoenebeck 660 * Implementation of virtual method from abstract EngineChannel interface.
99     * This method will periodically be polled (e.g. by the LSCP server) to
100     * check if some engine channel parameter has changed since the last
101     * StatusChanged() call.
102     *
103 schoenebeck 670 * This method can also be used to mark the engine channel as changed
104     * from outside, e.g. by a MIDI input device. The optional argument
105     * \a nNewStatus can be used for this.
106     *
107 schoenebeck 660 * TODO: This "poll method" is just a lazy solution and might be
108     * replaced in future.
109 schoenebeck 670 * @param bNewStatus - (optional, default: false) sets the new status flag
110 schoenebeck 660 * @returns true if engine channel status has changed since last
111     * StatusChanged() call
112     */
113 schoenebeck 670 bool EngineChannel::StatusChanged(bool bNewStatus) {
114 schoenebeck 660 bool b = bStatusChanged;
115 schoenebeck 670 bStatusChanged = bNewStatus;
116 schoenebeck 660 return b;
117     }
118    
119 schoenebeck 670 void EngineChannel::Reset() {
120     if (pEngine) pEngine->DisableAndLock();
121     ResetInternal();
122     ResetControllers();
123     if (pEngine) {
124     pEngine->Enable();
125     pEngine->Reset();
126     }
127     }
128    
129 schoenebeck 660 /**
130 schoenebeck 411 * This method is not thread safe!
131     */
132     void EngineChannel::ResetInternal() {
133     CurrentKeyDimension = 0;
134    
135     // reset key info
136     for (uint i = 0; i < 128; i++) {
137     if (pMIDIKeyInfo[i].pActiveVoices)
138     pMIDIKeyInfo[i].pActiveVoices->clear();
139     if (pMIDIKeyInfo[i].pEvents)
140     pMIDIKeyInfo[i].pEvents->clear();
141     pMIDIKeyInfo[i].KeyPressed = false;
142     pMIDIKeyInfo[i].Active = false;
143     pMIDIKeyInfo[i].ReleaseTrigger = false;
144     pMIDIKeyInfo[i].itSelf = Pool<uint>::Iterator();
145 schoenebeck 473 pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
146 schoenebeck 411 }
147 schoenebeck 829 SoloKey = -1; // no solo key active yet
148     PortamentoPos = -1.0f; // no portamento active yet
149 schoenebeck 411
150     // reset all key groups
151     std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
152     for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;
153    
154     // free all active keys
155     pActiveKeys->clear();
156    
157     // delete all input events
158     pEventQueue->init();
159    
160     if (pEngine) pEngine->ResetInternal();
161 schoenebeck 660
162     // status of engine channel has changed, so set notify flag
163     bStatusChanged = true;
164 schoenebeck 411 }
165    
166     LinuxSampler::Engine* EngineChannel::GetEngine() {
167     return pEngine;
168     }
169    
170     /**
171     * More or less a workaround to set the instrument name, index and load
172     * status variable to zero percent immediately, that is without blocking
173     * the calling thread. It might be used in future for other preparations
174     * as well though.
175     *
176     * @param FileName - file name of the Gigasampler instrument file
177     * @param Instrument - index of the instrument in the .gig file
178     * @see LoadInstrument()
179     */
180     void EngineChannel::PrepareLoadInstrument(const char* FileName, uint Instrument) {
181     InstrumentFile = FileName;
182     InstrumentIdx = Instrument;
183     InstrumentStat = 0;
184     }
185    
186     /**
187     * Load an instrument from a .gig file. PrepareLoadInstrument() has to
188     * be called first to provide the information which instrument to load.
189     * This method will then actually start to load the instrument and block
190     * the calling thread until loading was completed.
191     *
192     * @see PrepareLoadInstrument()
193     */
194     void EngineChannel::LoadInstrument() {
195 persson 1646 // make sure we don't trigger any new notes with an old
196     // instrument
197     instrument_change_command_t& cmd = ChangeInstrument(0);
198     if (cmd.pInstrument) {
199     // give old instrument back to instrument manager, but
200     // keep the dimension regions and samples that are in use
201     Engine::instruments.HandBackInstrument(cmd.pInstrument, this, cmd.pDimRegionsInUse);
202 schoenebeck 411 }
203 persson 1646 cmd.pDimRegionsInUse->clear();
204 schoenebeck 411
205     // delete all key groups
206     ActiveKeyGroups.clear();
207    
208     // request gig instrument from instrument manager
209 persson 1038 ::gig::Instrument* newInstrument;
210 schoenebeck 411 try {
211 schoenebeck 947 InstrumentManager::instrument_id_t instrid;
212     instrid.FileName = InstrumentFile;
213     instrid.Index = InstrumentIdx;
214 persson 1038 newInstrument = Engine::instruments.Borrow(instrid, this);
215     if (!newInstrument) {
216 schoenebeck 1212 throw InstrumentManagerException("resource was not created");
217 schoenebeck 411 }
218     }
219     catch (RIFF::Exception e) {
220     InstrumentStat = -2;
221 iliev 1309 StatusChanged(true);
222 schoenebeck 411 String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
223 schoenebeck 880 throw Exception(msg);
224 schoenebeck 411 }
225 schoenebeck 1212 catch (InstrumentManagerException e) {
226 schoenebeck 411 InstrumentStat = -3;
227 iliev 1309 StatusChanged(true);
228 schoenebeck 411 String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
229 schoenebeck 880 throw Exception(msg);
230 schoenebeck 411 }
231     catch (...) {
232     InstrumentStat = -4;
233 iliev 1309 StatusChanged(true);
234 schoenebeck 880 throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
235 schoenebeck 411 }
236    
237     // rebuild ActiveKeyGroups map with key groups of current instrument
238 persson 1038 for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
239 schoenebeck 411 if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
240    
241 persson 1038 InstrumentIdxName = newInstrument->pInfo->Name;
242 schoenebeck 411 InstrumentStat = 100;
243    
244 persson 1646 ChangeInstrument(newInstrument);
245    
246 iliev 1298 StatusChanged(true);
247 schoenebeck 411 }
248    
249 persson 1646
250 schoenebeck 411 /**
251 persson 1646 * Changes the instrument for an engine channel.
252     *
253     * @param pInstrument - new instrument
254     * @returns the resulting instrument change command after the
255     * command switch, containing the old instrument and
256     * the dimregions it is using
257     */
258     EngineChannel::instrument_change_command_t& EngineChannel::ChangeInstrument(::gig::Instrument* pInstrument) {
259     instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
260     cmd.pInstrument = pInstrument;
261     cmd.bChangeInstrument = true;
262    
263     return InstrumentChangeCommand.SwitchConfig();
264     }
265    
266     /**
267 schoenebeck 411 * Will be called by the InstrumentResourceManager when the instrument
268 schoenebeck 517 * we are currently using on this EngineChannel is going to be updated,
269     * so we can stop playback before that happens.
270 schoenebeck 411 */
271     void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
272     dmsg(3,("gig::Engine: Received instrument update message.\n"));
273     if (pEngine) pEngine->DisableAndLock();
274     ResetInternal();
275     this->pInstrument = NULL;
276     }
277    
278     /**
279     * Will be called by the InstrumentResourceManager when the instrument
280     * update process was completed, so we can continue with playback.
281     */
282     void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
283     this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())
284     if (pEngine) pEngine->Enable();
285 schoenebeck 660 bStatusChanged = true; // status of engine has changed, so set notify flag
286 schoenebeck 411 }
287    
288 schoenebeck 517 /**
289     * Will be called by the InstrumentResourceManager on progress changes
290     * while loading or realoading an instrument for this EngineChannel.
291     *
292     * @param fProgress - current progress as value between 0.0 and 1.0
293     */
294     void EngineChannel::OnResourceProgress(float fProgress) {
295     this->InstrumentStat = int(fProgress * 100.0f);
296     dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
297 schoenebeck 660 bStatusChanged = true; // status of engine has changed, so set notify flag
298 schoenebeck 517 }
299    
300 schoenebeck 412 void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
301 schoenebeck 460 if (pEngine) {
302     if (pEngine->pAudioOutputDevice == pAudioOut) return;
303 schoenebeck 412 DisconnectAudioOutputDevice();
304     }
305 schoenebeck 411 pEngine = Engine::AcquireEngine(this, pAudioOut);
306 persson 438 ResetInternal();
307 schoenebeck 738 pEvents = new RTList<Event>(pEngine->pEventPool);
308 persson 1646
309     // reset the instrument change command struct (need to be done
310     // twice, as it is double buffered)
311     {
312     instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
313     cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
314     cmd.pInstrument = 0;
315     cmd.bChangeInstrument = false;
316     }
317     {
318     instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
319     cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
320     cmd.pInstrument = 0;
321     cmd.bChangeInstrument = false;
322     }
323    
324 schoenebeck 411 for (uint i = 0; i < 128; i++) {
325     pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
326     pMIDIKeyInfo[i].pEvents = new RTList<Event>(pEngine->pEventPool);
327     }
328     AudioDeviceChannelLeft = 0;
329     AudioDeviceChannelRight = 1;
330 schoenebeck 1001 if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
331     pChannelLeft = pAudioOut->Channel(AudioDeviceChannelLeft);
332     pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
333     } else { // use local buffers for rendering and copy later
334     // ensure the local buffers have the correct size
335     if (pChannelLeft) delete pChannelLeft;
336     if (pChannelRight) delete pChannelRight;
337     pChannelLeft = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
338     pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
339     }
340 persson 1039 if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
341 persson 846 MidiInputPort::AddSysexListener(pEngine);
342 schoenebeck 411 }
343    
344     void EngineChannel::DisconnectAudioOutputDevice() {
345     if (pEngine) { // if clause to prevent disconnect loops
346 persson 1646
347 persson 1844 ResetInternal();
348    
349 persson 1646 // delete the structures used for instrument change
350     RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
351     if (d) delete d;
352     EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
353     d = cmd.pDimRegionsInUse;
354 persson 1844 if (d) delete d;
355 persson 1646
356     if (cmd.pInstrument) {
357     // release the currently loaded instrument
358 persson 1844 Engine::instruments.HandBack(cmd.pInstrument, this);
359 persson 1646 }
360 iliev 1761
361 schoenebeck 460 if (pEvents) {
362     delete pEvents;
363     pEvents = NULL;
364     }
365 schoenebeck 411 for (uint i = 0; i < 128; i++) {
366 schoenebeck 420 if (pMIDIKeyInfo[i].pActiveVoices) {
367     delete pMIDIKeyInfo[i].pActiveVoices;
368     pMIDIKeyInfo[i].pActiveVoices = NULL;
369     }
370     if (pMIDIKeyInfo[i].pEvents) {
371     delete pMIDIKeyInfo[i].pEvents;
372     pMIDIKeyInfo[i].pEvents = NULL;
373     }
374 schoenebeck 411 }
375     AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
376     pEngine = NULL;
377     Engine::FreeEngine(this, oldAudioDevice);
378     AudioDeviceChannelLeft = -1;
379 persson 438 AudioDeviceChannelRight = -1;
380 schoenebeck 1001 if (!fxSends.empty()) { // free the local rendering buffers
381     if (pChannelLeft) delete pChannelLeft;
382     if (pChannelRight) delete pChannelRight;
383     }
384     pChannelLeft = NULL;
385     pChannelRight = NULL;
386 schoenebeck 411 }
387     }
388    
389 schoenebeck 1001 AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
390     return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
391     }
392    
393 schoenebeck 411 void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
394     if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
395 persson 438
396 schoenebeck 411 AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
397     if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
398     switch (EngineAudioChannel) {
399     case 0: // left output channel
400 schoenebeck 1001 if (fxSends.empty()) pChannelLeft = pChannel;
401 schoenebeck 411 AudioDeviceChannelLeft = AudioDeviceChannel;
402     break;
403     case 1: // right output channel
404 schoenebeck 1001 if (fxSends.empty()) pChannelRight = pChannel;
405 schoenebeck 411 AudioDeviceChannelRight = AudioDeviceChannel;
406     break;
407     default:
408     throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
409     }
410 iliev 1267
411     bStatusChanged = true;
412 schoenebeck 411 }
413    
414     int EngineChannel::OutputChannel(uint EngineAudioChannel) {
415     switch (EngineAudioChannel) {
416     case 0: // left channel
417     return AudioDeviceChannelLeft;
418     case 1: // right channel
419     return AudioDeviceChannelRight;
420     default:
421     throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
422     }
423     }
424    
425 schoenebeck 675 void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
426     if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
427     DisconnectMidiInputPort();
428     this->pMidiInputPort = pMidiPort;
429     this->midiChannel = MidiChannel;
430     pMidiPort->Connect(this, MidiChannel);
431     }
432    
433     void EngineChannel::DisconnectMidiInputPort() {
434     MidiInputPort* pOldPort = this->pMidiInputPort;
435     this->pMidiInputPort = NULL;
436     if (pOldPort) pOldPort->Disconnect(this);
437     }
438    
439     MidiInputPort* EngineChannel::GetMidiInputPort() {
440     return pMidiInputPort;
441     }
442    
443     midi_chan_t EngineChannel::MidiChannel() {
444     return midiChannel;
445     }
446    
447 schoenebeck 1001 FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
448     if (pEngine) pEngine->DisableAndLock();
449     FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
450     if (fxSends.empty()) {
451     if (pEngine && pEngine->pAudioOutputDevice) {
452     AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
453     // create local render buffers
454     pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
455     pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
456     } else {
457     // postpone local render buffer creation until audio device is assigned
458     pChannelLeft = NULL;
459     pChannelRight = NULL;
460     }
461     }
462     fxSends.push_back(pFxSend);
463     if (pEngine) pEngine->Enable();
464 iliev 1761 fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
465 persson 1646
466 schoenebeck 1001 return pFxSend;
467     }
468    
469     FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
470     return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
471     }
472    
473     uint EngineChannel::GetFxSendCount() {
474     return fxSends.size();
475     }
476    
477     void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
478     if (pEngine) pEngine->DisableAndLock();
479     for (
480     std::vector<FxSend*>::iterator iter = fxSends.begin();
481     iter != fxSends.end(); iter++
482     ) {
483     if (*iter == pFxSend) {
484     delete pFxSend;
485     fxSends.erase(iter);
486     if (fxSends.empty()) {
487     // destroy local render buffers
488     if (pChannelLeft) delete pChannelLeft;
489     if (pChannelRight) delete pChannelRight;
490     // fallback to render directly into AudioOutputDevice's buffers
491     if (pEngine && pEngine->pAudioOutputDevice) {
492     pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
493     pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
494     } else { // we update the pointers later
495     pChannelLeft = NULL;
496     pChannelRight = NULL;
497     }
498     }
499     break;
500     }
501     }
502     if (pEngine) pEngine->Enable();
503 iliev 1761 fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
504 schoenebeck 1001 }
505    
506 schoenebeck 411 /**
507     * Will be called by the MIDIIn Thread to let the audio thread trigger a new
508 schoenebeck 906 * voice for the given key. This method is meant for real time rendering,
509     * that is an event will immediately be created with the current system
510     * time as time stamp.
511 schoenebeck 411 *
512     * @param Key - MIDI key number of the triggered key
513     * @param Velocity - MIDI velocity value of the triggered key
514     */
515     void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity) {
516     if (pEngine) {
517     Event event = pEngine->pEventGenerator->CreateEvent();
518     event.Type = Event::type_note_on;
519     event.Param.Note.Key = Key;
520     event.Param.Note.Velocity = Velocity;
521 persson 438 event.pEngineChannel = this;
522 schoenebeck 411 if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
523 schoenebeck 412 else dmsg(1,("EngineChannel: Input event queue full!"));
524 schoenebeck 1662 // inform connected virtual MIDI devices if any ...
525     // (e.g. virtual MIDI keyboard in instrument editor(s))
526     ArrayList<VirtualMidiDevice*>& devices =
527     const_cast<ArrayList<VirtualMidiDevice*>&>(
528     virtualMidiDevicesReader_MidiThread.Lock()
529     );
530     for (int i = 0; i < devices.size(); i++) {
531     devices[i]->SendNoteOnToDevice(Key, Velocity);
532     }
533     virtualMidiDevicesReader_MidiThread.Unlock();
534 schoenebeck 411 }
535     }
536    
537     /**
538 schoenebeck 906 * Will be called by the MIDIIn Thread to let the audio thread trigger a new
539     * voice for the given key. This method is meant for offline rendering
540     * and / or for cases where the exact position of the event in the current
541     * audio fragment is already known.
542     *
543     * @param Key - MIDI key number of the triggered key
544     * @param Velocity - MIDI velocity value of the triggered key
545     * @param FragmentPos - sample point position in the current audio
546     * fragment to which this event belongs to
547     */
548     void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
549     if (FragmentPos < 0) {
550     dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
551     }
552     else if (pEngine) {
553     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
554     event.Type = Event::type_note_on;
555     event.Param.Note.Key = Key;
556     event.Param.Note.Velocity = Velocity;
557     event.pEngineChannel = this;
558     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
559     else dmsg(1,("EngineChannel: Input event queue full!"));
560 schoenebeck 1662 // inform connected virtual MIDI devices if any ...
561     // (e.g. virtual MIDI keyboard in instrument editor(s))
562     ArrayList<VirtualMidiDevice*>& devices =
563     const_cast<ArrayList<VirtualMidiDevice*>&>(
564     virtualMidiDevicesReader_MidiThread.Lock()
565     );
566     for (int i = 0; i < devices.size(); i++) {
567     devices[i]->SendNoteOnToDevice(Key, Velocity);
568     }
569     virtualMidiDevicesReader_MidiThread.Unlock();
570 schoenebeck 906 }
571     }
572    
573     /**
574 schoenebeck 411 * Will be called by the MIDIIn Thread to signal the audio thread to release
575 schoenebeck 906 * voice(s) on the given key. This method is meant for real time rendering,
576     * that is an event will immediately be created with the current system
577     * time as time stamp.
578 schoenebeck 411 *
579     * @param Key - MIDI key number of the released key
580     * @param Velocity - MIDI release velocity value of the released key
581     */
582     void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity) {
583     if (pEngine) {
584     Event event = pEngine->pEventGenerator->CreateEvent();
585     event.Type = Event::type_note_off;
586     event.Param.Note.Key = Key;
587     event.Param.Note.Velocity = Velocity;
588 schoenebeck 412 event.pEngineChannel = this;
589 schoenebeck 411 if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
590 schoenebeck 412 else dmsg(1,("EngineChannel: Input event queue full!"));
591 schoenebeck 1662 // inform connected virtual MIDI devices if any ...
592     // (e.g. virtual MIDI keyboard in instrument editor(s))
593     ArrayList<VirtualMidiDevice*>& devices =
594     const_cast<ArrayList<VirtualMidiDevice*>&>(
595     virtualMidiDevicesReader_MidiThread.Lock()
596     );
597     for (int i = 0; i < devices.size(); i++) {
598     devices[i]->SendNoteOffToDevice(Key, Velocity);
599     }
600     virtualMidiDevicesReader_MidiThread.Unlock();
601 schoenebeck 411 }
602     }
603    
604     /**
605 schoenebeck 906 * Will be called by the MIDIIn Thread to signal the audio thread to release
606     * voice(s) on the given key. This method is meant for offline rendering
607     * and / or for cases where the exact position of the event in the current
608     * audio fragment is already known.
609     *
610     * @param Key - MIDI key number of the released key
611     * @param Velocity - MIDI release velocity value of the released key
612     * @param FragmentPos - sample point position in the current audio
613     * fragment to which this event belongs to
614     */
615     void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
616     if (FragmentPos < 0) {
617     dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
618     }
619     else if (pEngine) {
620     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
621     event.Type = Event::type_note_off;
622     event.Param.Note.Key = Key;
623     event.Param.Note.Velocity = Velocity;
624     event.pEngineChannel = this;
625     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
626     else dmsg(1,("EngineChannel: Input event queue full!"));
627 schoenebeck 1662 // inform connected virtual MIDI devices if any ...
628     // (e.g. virtual MIDI keyboard in instrument editor(s))
629     ArrayList<VirtualMidiDevice*>& devices =
630     const_cast<ArrayList<VirtualMidiDevice*>&>(
631     virtualMidiDevicesReader_MidiThread.Lock()
632     );
633     for (int i = 0; i < devices.size(); i++) {
634     devices[i]->SendNoteOffToDevice(Key, Velocity);
635     }
636     virtualMidiDevicesReader_MidiThread.Unlock();
637 schoenebeck 906 }
638     }
639    
640     /**
641 schoenebeck 411 * Will be called by the MIDIIn Thread to signal the audio thread to change
642 schoenebeck 906 * the pitch value for all voices. This method is meant for real time
643     * rendering, that is an event will immediately be created with the
644     * current system time as time stamp.
645 schoenebeck 411 *
646     * @param Pitch - MIDI pitch value (-8192 ... +8191)
647     */
648     void EngineChannel::SendPitchbend(int Pitch) {
649 persson 438 if (pEngine) {
650 schoenebeck 411 Event event = pEngine->pEventGenerator->CreateEvent();
651     event.Type = Event::type_pitchbend;
652     event.Param.Pitch.Pitch = Pitch;
653 schoenebeck 412 event.pEngineChannel = this;
654 schoenebeck 411 if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
655 schoenebeck 412 else dmsg(1,("EngineChannel: Input event queue full!"));
656 schoenebeck 411 }
657     }
658    
659     /**
660 schoenebeck 906 * Will be called by the MIDIIn Thread to signal the audio thread to change
661     * the pitch value for all voices. This method is meant for offline
662     * rendering and / or for cases where the exact position of the event in
663     * the current audio fragment is already known.
664     *
665     * @param Pitch - MIDI pitch value (-8192 ... +8191)
666     * @param FragmentPos - sample point position in the current audio
667     * fragment to which this event belongs to
668     */
669     void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
670     if (FragmentPos < 0) {
671     dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
672     }
673     else if (pEngine) {
674     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
675     event.Type = Event::type_pitchbend;
676     event.Param.Pitch.Pitch = Pitch;
677     event.pEngineChannel = this;
678     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
679     else dmsg(1,("EngineChannel: Input event queue full!"));
680     }
681     }
682    
683     /**
684 schoenebeck 411 * Will be called by the MIDIIn Thread to signal the audio thread that a
685 schoenebeck 906 * continuous controller value has changed. This method is meant for real
686     * time rendering, that is an event will immediately be created with the
687     * current system time as time stamp.
688 schoenebeck 411 *
689     * @param Controller - MIDI controller number of the occured control change
690     * @param Value - value of the control change
691     */
692     void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value) {
693     if (pEngine) {
694     Event event = pEngine->pEventGenerator->CreateEvent();
695     event.Type = Event::type_control_change;
696     event.Param.CC.Controller = Controller;
697     event.Param.CC.Value = Value;
698 schoenebeck 412 event.pEngineChannel = this;
699 schoenebeck 411 if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
700 schoenebeck 412 else dmsg(1,("EngineChannel: Input event queue full!"));
701 schoenebeck 411 }
702     }
703    
704 schoenebeck 906 /**
705     * Will be called by the MIDIIn Thread to signal the audio thread that a
706     * continuous controller value has changed. This method is meant for
707     * offline rendering and / or for cases where the exact position of the
708     * event in the current audio fragment is already known.
709     *
710     * @param Controller - MIDI controller number of the occured control change
711     * @param Value - value of the control change
712     * @param FragmentPos - sample point position in the current audio
713     * fragment to which this event belongs to
714     */
715     void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
716     if (FragmentPos < 0) {
717     dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
718     }
719     else if (pEngine) {
720     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
721     event.Type = Event::type_control_change;
722     event.Param.CC.Controller = Controller;
723     event.Param.CC.Value = Value;
724     event.pEngineChannel = this;
725     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
726     else dmsg(1,("EngineChannel: Input event queue full!"));
727     }
728     }
729    
730 schoenebeck 460 void EngineChannel::ClearEventLists() {
731     pEvents->clear();
732     // empty MIDI key specific event lists
733     {
734     RTList<uint>::Iterator iuiKey = pActiveKeys->first();
735     RTList<uint>::Iterator end = pActiveKeys->end();
736     for(; iuiKey != end; ++iuiKey) {
737     pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
738     }
739     }
740     }
741    
742 schoenebeck 473 void EngineChannel::ResetControllers() {
743 schoenebeck 670 Pitch = 0;
744     SustainPedal = false;
745 iliev 776 SostenutoPedal = false;
746 schoenebeck 1005 GlobalVolume = 1.0f;
747 schoenebeck 947 MidiVolume = 1.0;
748 schoenebeck 670 GlobalPanLeft = 1.0f;
749     GlobalPanRight = 1.0f;
750 schoenebeck 1723 iLastPanRequest = 64;
751 schoenebeck 1041 GlobalTranspose = 0;
752 schoenebeck 473 // set all MIDI controller values to zero
753 persson 903 memset(ControllerTable, 0x00, 129);
754 schoenebeck 1040 // reset all FX Send levels
755     for (
756     std::vector<FxSend*>::iterator iter = fxSends.begin();
757     iter != fxSends.end(); iter++
758     ) {
759     (*iter)->Reset();
760     }
761 schoenebeck 473 }
762    
763 schoenebeck 460 /**
764     * Copy all events from the engine channel's input event queue buffer to
765     * the internal event list. This will be done at the beginning of each
766     * audio cycle (that is each RenderAudio() call) to distinguish all
767     * events which have to be processed in the current audio cycle. Each
768     * EngineChannel has it's own input event queue for the common channel
769     * specific events (like NoteOn, NoteOff and ControlChange events).
770     * Beside that, the engine also has a input event queue for global
771     * events (usually SysEx messages).
772     *
773     * @param Samples - number of sample points to be processed in the
774     * current audio cycle
775     */
776     void EngineChannel::ImportEvents(uint Samples) {
777 schoenebeck 1659 // import events from pure software MIDI "devices"
778     // (e.g. virtual keyboard in instrument editor)
779     {
780     const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
781     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
782     VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
783     // as we're going to (carefully) write some status to the
784     // synchronized struct, we cast away the const
785     ArrayList<VirtualMidiDevice*>& devices =
786 schoenebeck 1662 const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
787 schoenebeck 1659 // iterate through all virtual MIDI devices
788     for (int i = 0; i < devices.size(); i++) {
789     VirtualMidiDevice* pDev = devices[i];
790     // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
791     while (pDev->GetMidiEventFromDevice(devEvent)) {
792     event.Type =
793     (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
794     Event::type_note_on : Event::type_note_off;
795     event.Param.Note.Key = devEvent.Key;
796     event.Param.Note.Velocity = devEvent.Velocity;
797     event.pEngineChannel = this;
798     // copy event to internal event list
799     if (pEvents->poolIsEmpty()) {
800     dmsg(1,("Event pool emtpy!\n"));
801     goto exitVirtualDevicesLoop;
802     }
803     *pEvents->allocAppend() = event;
804     }
805     }
806     }
807     exitVirtualDevicesLoop:
808 schoenebeck 1662 virtualMidiDevicesReader_AudioThread.Unlock();
809 schoenebeck 1659
810     // import events from the regular MIDI devices
811 schoenebeck 970 RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
812 schoenebeck 460 Event* pEvent;
813     while (true) {
814     // get next event from input event queue
815     if (!(pEvent = eventQueueReader.pop())) break;
816     // if younger event reached, ignore that and all subsequent ones for now
817     if (pEvent->FragmentPos() >= Samples) {
818     eventQueueReader--;
819     dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
820     pEvent->ResetFragmentPos();
821     break;
822     }
823     // copy event to internal event list
824     if (pEvents->poolIsEmpty()) {
825     dmsg(1,("Event pool emtpy!\n"));
826     break;
827     }
828     *pEvents->allocAppend() = *pEvent;
829     }
830     eventQueueReader.free(); // free all copied events from input queue
831     }
832    
833 schoenebeck 1001 void EngineChannel::RemoveAllFxSends() {
834     if (pEngine) pEngine->DisableAndLock();
835     if (!fxSends.empty()) { // free local render buffers
836     if (pChannelLeft) {
837     delete pChannelLeft;
838     if (pEngine && pEngine->pAudioOutputDevice) {
839     // fallback to render directly to the AudioOutputDevice's buffer
840     pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
841     } else pChannelLeft = NULL;
842     }
843     if (pChannelRight) {
844     delete pChannelRight;
845     if (pEngine && pEngine->pAudioOutputDevice) {
846     // fallback to render directly to the AudioOutputDevice's buffer
847     pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
848 persson 1646 } else pChannelRight = NULL;
849 schoenebeck 1001 }
850     }
851     for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
852     fxSends.clear();
853     if (pEngine) pEngine->Enable();
854     }
855    
856 schoenebeck 1659 void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
857     // double buffer ... double work ...
858     {
859     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
860     devices.add(pDevice);
861     }
862     {
863     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
864     devices.add(pDevice);
865     }
866     }
867    
868     void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
869     // double buffer ... double work ...
870     {
871     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
872     devices.remove(pDevice);
873     }
874     {
875     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
876     devices.remove(pDevice);
877     }
878     }
879    
880 schoenebeck 411 float EngineChannel::Volume() {
881     return GlobalVolume;
882     }
883    
884     void EngineChannel::Volume(float f) {
885     GlobalVolume = f;
886 schoenebeck 660 bStatusChanged = true; // status of engine channel has changed, so set notify flag
887 schoenebeck 411 }
888    
889 schoenebeck 1723 float EngineChannel::Pan() {
890     return float(iLastPanRequest - 64) / 64.0f;
891     }
892    
893     void EngineChannel::Pan(float f) {
894     int iMidiPan = int(f * 64.0f) + 64;
895     if (iMidiPan > 127) iMidiPan = 127;
896     else if (iMidiPan < 0) iMidiPan = 0;
897     GlobalPanLeft = Engine::PanCurve[128 - iMidiPan];
898     GlobalPanRight = Engine::PanCurve[iMidiPan];
899     iLastPanRequest = iMidiPan;
900     }
901    
902 schoenebeck 411 uint EngineChannel::Channels() {
903     return 2;
904     }
905    
906     String EngineChannel::InstrumentFileName() {
907     return InstrumentFile;
908     }
909    
910     String EngineChannel::InstrumentName() {
911     return InstrumentIdxName;
912     }
913    
914     int EngineChannel::InstrumentIndex() {
915     return InstrumentIdx;
916     }
917    
918     int EngineChannel::InstrumentStatus() {
919     return InstrumentStat;
920 persson 438 }
921 schoenebeck 411
922 schoenebeck 475 String EngineChannel::EngineName() {
923     return LS_GIG_ENGINE_NAME;
924     }
925 schoenebeck 660
926 iliev 1843 void EngineChannel::ClearDimRegionsInUse() {
927     {
928     instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
929     if(cmd.pDimRegionsInUse != NULL) cmd.pDimRegionsInUse->clear();
930     }
931     {
932     instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
933     if(cmd.pDimRegionsInUse != NULL) cmd.pDimRegionsInUse->clear();
934     }
935     }
936    
937     void EngineChannel::ResetDimRegionsInUse() {
938     {
939     instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
940     if(cmd.pDimRegionsInUse != NULL) {
941     delete cmd.pDimRegionsInUse;
942     cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
943     }
944     }
945     {
946     instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
947     if(cmd.pDimRegionsInUse != NULL) {
948     delete cmd.pDimRegionsInUse;
949     cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
950     }
951     }
952     }
953    
954 schoenebeck 411 }} // namespace LinuxSampler::gig

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