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

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Revision 3706 - (hide annotations) (download)
Wed Jan 8 20:39:59 2020 UTC (10 months, 3 weeks ago) by schoenebeck
File size: 53396 byte(s)
Fixed compiler warnings about implied type casts.

1 iliev 2012 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5     * Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck *
6 schoenebeck 3706 * Copyright (C) 2005-2020 Christian Schoenebeck *
7     * Copyright (C) 2009-2012 Grigor Iliev *
8     * Copyright (C) 2012-2017 Andreas Persson *
9 iliev 2012 * *
10     * This program is free software; you can redistribute it and/or modify *
11     * it under the terms of the GNU General Public License as published by *
12     * the Free Software Foundation; either version 2 of the License, or *
13     * (at your option) any later version. *
14     * *
15     * This program is distributed in the hope that it will be useful, *
16     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
17     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
18     * GNU General Public License for more details. *
19     * *
20     * You should have received a copy of the GNU General Public License *
21     * along with this program; if not, write to the Free Software *
22     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
23     * MA 02111-1307 USA *
24     ***************************************************************************/
25    
26     #include "AbstractEngineChannel.h"
27     #include "../common/global_private.h"
28     #include "../Sampler.h"
29    
30     namespace LinuxSampler {
31    
32     AbstractEngineChannel::AbstractEngineChannel() :
33     virtualMidiDevicesReader_AudioThread(virtualMidiDevices),
34     virtualMidiDevicesReader_MidiThread(virtualMidiDevices)
35     {
36     pEngine = NULL;
37     pEvents = NULL; // we allocate when we retrieve the right Engine object
38 schoenebeck 2871 delayedEvents.pList = NULL;
39 iliev 2012 pEventQueue = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
40     InstrumentIdx = -1;
41     InstrumentStat = -1;
42     pChannelLeft = NULL;
43     pChannelRight = NULL;
44     AudioDeviceChannelLeft = -1;
45     AudioDeviceChannelRight = -1;
46     midiChannel = midi_chan_all;
47     ResetControllers();
48     PortamentoMode = false;
49     PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
50 schoenebeck 2611 pScript = NULL;
51 iliev 2012 }
52    
53     AbstractEngineChannel::~AbstractEngineChannel() {
54 persson 2114 delete pEventQueue;
55     DeleteGroupEventLists();
56 iliev 2012 RemoveAllFxSends();
57     }
58    
59     Engine* AbstractEngineChannel::GetEngine() {
60     return pEngine;
61     }
62    
63     uint AbstractEngineChannel::Channels() {
64     return 2;
65     }
66    
67     /**
68     * More or less a workaround to set the instrument name, index and load
69     * status variable to zero percent immediately, that is without blocking
70     * the calling thread. It might be used in future for other preparations
71     * as well though.
72     *
73     * @param FileName - file name of the instrument file
74     * @param Instrument - index of the instrument in the file
75     * @see LoadInstrument()
76     */
77     void AbstractEngineChannel::PrepareLoadInstrument(const char* FileName, uint Instrument) {
78     InstrumentFile = FileName;
79     InstrumentIdx = Instrument;
80     InstrumentStat = 0;
81     }
82    
83     String AbstractEngineChannel::InstrumentFileName() {
84     return InstrumentFile;
85     }
86    
87     String AbstractEngineChannel::InstrumentName() {
88     return InstrumentIdxName;
89     }
90    
91     int AbstractEngineChannel::InstrumentIndex() {
92     return InstrumentIdx;
93     }
94    
95     int AbstractEngineChannel::InstrumentStatus() {
96     return InstrumentStat;
97     }
98    
99     String AbstractEngineChannel::EngineName() {
100     return AbstractEngine::GetFormatString(GetEngineFormat());
101     }
102    
103     void AbstractEngineChannel::Reset() {
104     if (pEngine) pEngine->DisableAndLock();
105 schoenebeck 2871 ResetInternal(false/*don't reset engine*/);
106 iliev 2012 ResetControllers();
107     if (pEngine) {
108     pEngine->Enable();
109     pEngine->Reset();
110     }
111     }
112    
113     void AbstractEngineChannel::ResetControllers() {
114     Pitch = 0;
115     GlobalVolume = 1.0f;
116     MidiVolume = 1.0;
117     iLastPanRequest = 64;
118     GlobalTranspose = 0;
119     // set all MIDI controller values to zero
120     memset(ControllerTable, 0x00, 129);
121     // reset all FX Send levels
122     for (
123     std::vector<FxSend*>::iterator iter = fxSends.begin();
124     iter != fxSends.end(); iter++
125     ) {
126     (*iter)->Reset();
127     }
128     }
129    
130     /**
131     * This method is not thread safe!
132     */
133 schoenebeck 2871 void AbstractEngineChannel::ResetInternal(bool bResetEngine) {
134 iliev 2012 CurrentKeyDimension = 0;
135     PortamentoPos = -1.0f; // no portamento active yet
136    
137 schoenebeck 2871 // delete all active instrument script events
138     if (pScript) pScript->resetEvents();
139    
140     // free all delayed MIDI events
141     delayedEvents.clear();
142    
143 iliev 2012 // delete all input events
144     pEventQueue->init();
145    
146 schoenebeck 2871 if (bResetEngine && pEngine) pEngine->ResetInternal();
147 iliev 2012
148     // status of engine channel has changed, so set notify flag
149     bStatusChanged = true;
150     }
151    
152     /**
153     * Implementation of virtual method from abstract EngineChannel interface.
154     * This method will periodically be polled (e.g. by the LSCP server) to
155     * check if some engine channel parameter has changed since the last
156     * StatusChanged() call.
157     *
158     * This method can also be used to mark the engine channel as changed
159     * from outside, e.g. by a MIDI input device. The optional argument
160     * \a nNewStatus can be used for this.
161     *
162     * TODO: This "poll method" is just a lazy solution and might be
163     * replaced in future.
164     * @param bNewStatus - (optional, default: false) sets the new status flag
165     * @returns true if engine channel status has changed since last
166     * StatusChanged() call
167     */
168     bool AbstractEngineChannel::StatusChanged(bool bNewStatus) {
169     bool b = bStatusChanged;
170     bStatusChanged = bNewStatus;
171     return b;
172     }
173    
174     float AbstractEngineChannel::Volume() {
175     return GlobalVolume;
176     }
177    
178     void AbstractEngineChannel::Volume(float f) {
179     GlobalVolume = f;
180     bStatusChanged = true; // status of engine channel has changed, so set notify flag
181     }
182    
183     float AbstractEngineChannel::Pan() {
184     return float(iLastPanRequest - 64) / 64.0f;
185     }
186    
187     void AbstractEngineChannel::Pan(float f) {
188     int iMidiPan = int(f * 64.0f) + 64;
189     if (iMidiPan > 127) iMidiPan = 127;
190     else if (iMidiPan < 0) iMidiPan = 0;
191     iLastPanRequest = iMidiPan;
192     }
193    
194     AudioOutputDevice* AbstractEngineChannel::GetAudioOutputDevice() {
195     return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
196     }
197    
198 persson 2326 /**
199     * Gets thread safe access to the currently connected audio output
200     * device from other threads than the lscp thread.
201     */
202     AudioOutputDevice* AbstractEngineChannel::GetAudioOutputDeviceSafe() {
203 persson 2427 LockGuard lock(EngineMutex);
204     return GetAudioOutputDevice();
205 persson 2326 }
206    
207 iliev 2012 void AbstractEngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
208     if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
209    
210     AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
211     if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
212     switch (EngineAudioChannel) {
213     case 0: // left output channel
214     if (fxSends.empty()) pChannelLeft = pChannel;
215     AudioDeviceChannelLeft = AudioDeviceChannel;
216     break;
217     case 1: // right output channel
218     if (fxSends.empty()) pChannelRight = pChannel;
219     AudioDeviceChannelRight = AudioDeviceChannel;
220     break;
221     default:
222     throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
223     }
224    
225     bStatusChanged = true;
226     }
227    
228     int AbstractEngineChannel::OutputChannel(uint EngineAudioChannel) {
229     switch (EngineAudioChannel) {
230     case 0: // left channel
231     return AudioDeviceChannelLeft;
232     case 1: // right channel
233     return AudioDeviceChannelRight;
234     default:
235     throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
236     }
237     }
238    
239 schoenebeck 2500 void AbstractEngineChannel::Connect(MidiInputPort* pMidiPort) {
240     if (!pMidiPort) return;
241    
242     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
243    
244     // check if connection already exists
245     for (int i = 0; i < connections->size(); ++i)
246     if ((*connections)[i] == pMidiPort)
247     return; // to avoid endless recursion
248    
249     connections->add(pMidiPort);
250    
251     // inform MIDI port about this new connection
252     pMidiPort->Connect(this, MidiChannel());
253     }
254    
255     void AbstractEngineChannel::Disconnect(MidiInputPort* pMidiPort) {
256     if (!pMidiPort) return;
257    
258     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
259    
260     for (int i = 0; i < connections->size(); ++i) {
261     if ((*connections)[i] == pMidiPort) {
262     connections->remove(i);
263     // inform MIDI port about this disconnection
264     pMidiPort->Disconnect(this);
265     return;
266     }
267     }
268     }
269    
270     void AbstractEngineChannel::DisconnectAllMidiInputPorts() {
271     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
272     ArrayList<MidiInputPort*> clonedList = *connections;
273     connections->clear();
274     for (int i = 0; i < clonedList.size(); ++i) clonedList[i]->Disconnect(this);
275     }
276    
277     uint AbstractEngineChannel::GetMidiInputPortCount() {
278     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
279 schoenebeck 3706 return (uint) connections->size();
280 schoenebeck 2500 }
281    
282     MidiInputPort* AbstractEngineChannel::GetMidiInputPort(uint index) {
283     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
284     return (index < connections->size()) ? (*connections)[index] : NULL;
285     }
286    
287     // deprecated (just for API backward compatibility) - may be removed in future
288 iliev 2012 void AbstractEngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
289 schoenebeck 2500 if (!pMidiPort) return;
290    
291     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
292    
293     // check against endless recursion
294     if (connections->size() == 1 && (*connections)[0] == pMidiPort && this->midiChannel == MidiChannel)
295     return;
296    
297     if (!isValidMidiChan(MidiChannel))
298     throw MidiInputException("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")");
299    
300     this->midiChannel = MidiChannel;
301    
302     // disconnect all currently connected MIDI ports
303     ArrayList<MidiInputPort*> clonedList = *connections;
304     connections->clear();
305     for (int i = 0; i < clonedList.size(); ++i)
306     clonedList[i]->Disconnect(this);
307    
308     // connect the new port
309     connections->add(pMidiPort);
310 iliev 2012 pMidiPort->Connect(this, MidiChannel);
311     }
312    
313 schoenebeck 2500 // deprecated (just for API backward compatibility) - may be removed in future
314 iliev 2012 void AbstractEngineChannel::DisconnectMidiInputPort() {
315 schoenebeck 2500 DisconnectAllMidiInputPorts();
316 iliev 2012 }
317    
318 schoenebeck 2500 // deprecated (just for API backward compatibility) - may be removed in future
319 iliev 2012 MidiInputPort* AbstractEngineChannel::GetMidiInputPort() {
320 schoenebeck 2500 return GetMidiInputPort(0);
321 iliev 2012 }
322    
323     midi_chan_t AbstractEngineChannel::MidiChannel() {
324     return midiChannel;
325     }
326    
327 schoenebeck 2500 void AbstractEngineChannel::SetMidiChannel(midi_chan_t MidiChannel) {
328     if (this->midiChannel == MidiChannel) return;
329     if (!isValidMidiChan(MidiChannel))
330     throw MidiInputException("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")");
331    
332     this->midiChannel = MidiChannel;
333    
334     Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back();
335     ArrayList<MidiInputPort*> clonedList = *connections;
336    
337     DisconnectAllMidiInputPorts();
338    
339     for (int i = 0; i < clonedList.size(); ++i) Connect(clonedList[i]);
340     }
341    
342 iliev 2012 void AbstractEngineChannel::Connect(VirtualMidiDevice* pDevice) {
343     // double buffer ... double work ...
344     {
345     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
346     devices.add(pDevice);
347     }
348     {
349     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
350     devices.add(pDevice);
351     }
352     }
353    
354     void AbstractEngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
355     // double buffer ... double work ...
356     {
357     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
358     devices.remove(pDevice);
359     }
360     {
361     ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
362     devices.remove(pDevice);
363     }
364     }
365    
366     /**
367     * Will be called by the MIDIIn Thread to let the audio thread trigger a new
368     * voice for the given key. This method is meant for real time rendering,
369     * that is an event will immediately be created with the current system
370     * time as time stamp.
371     *
372     * @param Key - MIDI key number of the triggered key
373     * @param Velocity - MIDI velocity value of the triggered key
374     */
375 persson 2317 void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) {
376 iliev 2012 if (pEngine) {
377 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
378     LockGuard g;
379     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
380    
381 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent();
382     event.Type = Event::type_note_on;
383     event.Param.Note.Key = Key;
384     event.Param.Note.Velocity = Velocity;
385 persson 2317 event.Param.Note.Channel = MidiChannel;
386 iliev 2012 event.pEngineChannel = this;
387     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
388     else dmsg(1,("EngineChannel: Input event queue full!"));
389     // inform connected virtual MIDI devices if any ...
390     // (e.g. virtual MIDI keyboard in instrument editor(s))
391     ArrayList<VirtualMidiDevice*>& devices =
392     const_cast<ArrayList<VirtualMidiDevice*>&>(
393     virtualMidiDevicesReader_MidiThread.Lock()
394     );
395     for (int i = 0; i < devices.size(); i++) {
396     devices[i]->SendNoteOnToDevice(Key, Velocity);
397     }
398     virtualMidiDevicesReader_MidiThread.Unlock();
399     }
400     }
401    
402     /**
403     * Will be called by the MIDIIn Thread to let the audio thread trigger a new
404     * voice for the given key. This method is meant for offline rendering
405     * and / or for cases where the exact position of the event in the current
406     * audio fragment is already known.
407     *
408     * @param Key - MIDI key number of the triggered key
409     * @param Velocity - MIDI velocity value of the triggered key
410     * @param FragmentPos - sample point position in the current audio
411     * fragment to which this event belongs to
412     */
413 persson 2317 void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) {
414 iliev 2012 if (FragmentPos < 0) {
415     dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
416     }
417     else if (pEngine) {
418 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
419     LockGuard g;
420     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
421    
422 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
423     event.Type = Event::type_note_on;
424     event.Param.Note.Key = Key;
425     event.Param.Note.Velocity = Velocity;
426 persson 2317 event.Param.Note.Channel = MidiChannel;
427 iliev 2012 event.pEngineChannel = this;
428     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
429     else dmsg(1,("EngineChannel: Input event queue full!"));
430     // inform connected virtual MIDI devices if any ...
431     // (e.g. virtual MIDI keyboard in instrument editor(s))
432     ArrayList<VirtualMidiDevice*>& devices =
433     const_cast<ArrayList<VirtualMidiDevice*>&>(
434     virtualMidiDevicesReader_MidiThread.Lock()
435     );
436     for (int i = 0; i < devices.size(); i++) {
437     devices[i]->SendNoteOnToDevice(Key, Velocity);
438     }
439     virtualMidiDevicesReader_MidiThread.Unlock();
440     }
441     }
442    
443     /**
444     * Will be called by the MIDIIn Thread to signal the audio thread to release
445     * voice(s) on the given key. This method is meant for real time rendering,
446     * that is an event will immediately be created with the current system
447     * time as time stamp.
448     *
449     * @param Key - MIDI key number of the released key
450     * @param Velocity - MIDI release velocity value of the released key
451     */
452 persson 2317 void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) {
453 iliev 2012 if (pEngine) {
454 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
455     LockGuard g;
456     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
457    
458 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent();
459     event.Type = Event::type_note_off;
460     event.Param.Note.Key = Key;
461     event.Param.Note.Velocity = Velocity;
462 persson 2317 event.Param.Note.Channel = MidiChannel;
463 iliev 2012 event.pEngineChannel = this;
464     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
465     else dmsg(1,("EngineChannel: Input event queue full!"));
466     // inform connected virtual MIDI devices if any ...
467     // (e.g. virtual MIDI keyboard in instrument editor(s))
468     ArrayList<VirtualMidiDevice*>& devices =
469     const_cast<ArrayList<VirtualMidiDevice*>&>(
470     virtualMidiDevicesReader_MidiThread.Lock()
471     );
472     for (int i = 0; i < devices.size(); i++) {
473     devices[i]->SendNoteOffToDevice(Key, Velocity);
474     }
475     virtualMidiDevicesReader_MidiThread.Unlock();
476     }
477     }
478    
479     /**
480     * Will be called by the MIDIIn Thread to signal the audio thread to release
481     * voice(s) on the given key. This method is meant for offline rendering
482     * and / or for cases where the exact position of the event in the current
483     * audio fragment is already known.
484     *
485     * @param Key - MIDI key number of the released key
486     * @param Velocity - MIDI release velocity value of the released key
487     * @param FragmentPos - sample point position in the current audio
488     * fragment to which this event belongs to
489     */
490 persson 2317 void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) {
491 iliev 2012 if (FragmentPos < 0) {
492     dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
493     }
494     else if (pEngine) {
495 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
496     LockGuard g;
497     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
498    
499 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
500     event.Type = Event::type_note_off;
501     event.Param.Note.Key = Key;
502     event.Param.Note.Velocity = Velocity;
503 persson 2317 event.Param.Note.Channel = MidiChannel;
504 iliev 2012 event.pEngineChannel = this;
505     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
506     else dmsg(1,("EngineChannel: Input event queue full!"));
507     // inform connected virtual MIDI devices if any ...
508     // (e.g. virtual MIDI keyboard in instrument editor(s))
509     ArrayList<VirtualMidiDevice*>& devices =
510     const_cast<ArrayList<VirtualMidiDevice*>&>(
511     virtualMidiDevicesReader_MidiThread.Lock()
512     );
513     for (int i = 0; i < devices.size(); i++) {
514     devices[i]->SendNoteOffToDevice(Key, Velocity);
515     }
516     virtualMidiDevicesReader_MidiThread.Unlock();
517     }
518     }
519    
520     /**
521     * Will be called by the MIDIIn Thread to signal the audio thread to change
522     * the pitch value for all voices. This method is meant for real time
523     * rendering, that is an event will immediately be created with the
524     * current system time as time stamp.
525     *
526     * @param Pitch - MIDI pitch value (-8192 ... +8191)
527     */
528 persson 2317 void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel) {
529 iliev 2012 if (pEngine) {
530 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
531     LockGuard g;
532     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
533    
534 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent();
535     event.Type = Event::type_pitchbend;
536     event.Param.Pitch.Pitch = Pitch;
537 persson 2317 event.Param.Pitch.Channel = MidiChannel;
538 iliev 2012 event.pEngineChannel = this;
539     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
540     else dmsg(1,("EngineChannel: Input event queue full!"));
541     }
542     }
543    
544     /**
545     * Will be called by the MIDIIn Thread to signal the audio thread to change
546     * the pitch value for all voices. This method is meant for offline
547     * rendering and / or for cases where the exact position of the event in
548     * the current audio fragment is already known.
549     *
550     * @param Pitch - MIDI pitch value (-8192 ... +8191)
551     * @param FragmentPos - sample point position in the current audio
552     * fragment to which this event belongs to
553     */
554 persson 2317 void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos) {
555 iliev 2012 if (FragmentPos < 0) {
556     dmsg(1,("AbstractEngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
557     }
558     else if (pEngine) {
559 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
560     LockGuard g;
561     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
562    
563 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
564     event.Type = Event::type_pitchbend;
565     event.Param.Pitch.Pitch = Pitch;
566 persson 2317 event.Param.Pitch.Channel = MidiChannel;
567 iliev 2012 event.pEngineChannel = this;
568     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
569     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
570     }
571     }
572    
573     /**
574     * Will be called by the MIDIIn Thread to signal the audio thread that a
575     * continuous controller value has changed. This method is meant for real
576     * time rendering, that is an event will immediately be created with the
577     * current system time as time stamp.
578     *
579     * @param Controller - MIDI controller number of the occured control change
580     * @param Value - value of the control change
581     */
582 persson 2317 void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel) {
583 iliev 2012 if (pEngine) {
584 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
585     LockGuard g;
586     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
587    
588 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent();
589     event.Type = Event::type_control_change;
590     event.Param.CC.Controller = Controller;
591     event.Param.CC.Value = Value;
592 persson 2317 event.Param.CC.Channel = MidiChannel;
593 iliev 2012 event.pEngineChannel = this;
594     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
595     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
596     }
597     }
598    
599     /**
600     * Will be called by the MIDIIn Thread to signal the audio thread that a
601     * continuous controller value has changed. This method is meant for
602     * offline rendering and / or for cases where the exact position of the
603     * event in the current audio fragment is already known.
604     *
605     * @param Controller - MIDI controller number of the occured control change
606     * @param Value - value of the control change
607     * @param FragmentPos - sample point position in the current audio
608     * fragment to which this event belongs to
609     */
610 persson 2317 void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) {
611 iliev 2012 if (FragmentPos < 0) {
612     dmsg(1,("AbstractEngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
613     }
614     else if (pEngine) {
615 schoenebeck 2500 // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
616     LockGuard g;
617     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
618    
619 iliev 2012 Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
620     event.Type = Event::type_control_change;
621     event.Param.CC.Controller = Controller;
622     event.Param.CC.Value = Value;
623 persson 2317 event.Param.CC.Channel = MidiChannel;
624 iliev 2012 event.pEngineChannel = this;
625     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
626     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
627     }
628     }
629    
630 schoenebeck 2559 void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel) {
631     if (pEngine) {
632     // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
633     LockGuard g;
634     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
635    
636     Event event = pEngine->pEventGenerator->CreateEvent();
637     event.Type = Event::type_channel_pressure;
638 schoenebeck 2611 event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH; // required for instrument scripts
639 schoenebeck 2559 event.Param.ChannelPressure.Value = Value;
640     event.Param.ChannelPressure.Channel = MidiChannel;
641     event.pEngineChannel = this;
642     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
643     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
644     }
645     }
646    
647     void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) {
648     if (pEngine) {
649     // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
650     LockGuard g;
651     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
652    
653     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
654     event.Type = Event::type_channel_pressure;
655 schoenebeck 2611 event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH; // required for instrument scripts
656 schoenebeck 2559 event.Param.ChannelPressure.Value = Value;
657     event.Param.ChannelPressure.Channel = MidiChannel;
658     event.pEngineChannel = this;
659     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
660     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
661     }
662     }
663    
664     void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel) {
665     if (pEngine) {
666     // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
667     LockGuard g;
668     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
669    
670     Event event = pEngine->pEventGenerator->CreateEvent();
671     event.Type = Event::type_note_pressure;
672     event.Param.NotePressure.Key = Key;
673     event.Param.NotePressure.Value = Value;
674     event.Param.NotePressure.Channel = MidiChannel;
675     event.pEngineChannel = this;
676     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
677     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
678     }
679     }
680    
681     void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) {
682     if (pEngine) {
683     // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
684     LockGuard g;
685     if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
686    
687     Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
688     event.Type = Event::type_note_pressure;
689     event.Param.NotePressure.Key = Key;
690     event.Param.NotePressure.Value = Value;
691     event.Param.NotePressure.Channel = MidiChannel;
692     event.pEngineChannel = this;
693     if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
694     else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
695     }
696     }
697    
698 schoenebeck 2879 bool AbstractEngineChannel::applyTranspose(Event* event) {
699     if (event->Type != Event::type_note_on && event->Type != Event::type_note_off)
700     return true; // event OK (not a note event, nothing to do with it here)
701    
702     //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing
703     const int k = event->Param.Note.Key + GlobalTranspose;
704     if (k < 0 || k > 127)
705     return false; // bad event, drop it
706    
707     event->Param.Note.Key = k;
708    
709     return true; // event OK
710     }
711    
712 iliev 2012 /**
713     * Copy all events from the engine channel's input event queue buffer to
714     * the internal event list. This will be done at the beginning of each
715     * audio cycle (that is each RenderAudio() call) to distinguish all
716     * events which have to be processed in the current audio cycle. Each
717     * EngineChannel has it's own input event queue for the common channel
718     * specific events (like NoteOn, NoteOff and ControlChange events).
719     * Beside that, the engine also has a input event queue for global
720     * events (usually SysEx messages).
721     *
722     * @param Samples - number of sample points to be processed in the
723     * current audio cycle
724     */
725     void AbstractEngineChannel::ImportEvents(uint Samples) {
726     // import events from pure software MIDI "devices"
727     // (e.g. virtual keyboard in instrument editor)
728     {
729 persson 2317 const uint8_t channel = MidiChannel() == midi_chan_all ? 0 : MidiChannel();
730 iliev 2012 const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
731 schoenebeck 3205 const Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
732 iliev 2012 VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
733     // as we're going to (carefully) write some status to the
734     // synchronized struct, we cast away the const
735     ArrayList<VirtualMidiDevice*>& devices =
736     const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
737     // iterate through all virtual MIDI devices
738     for (int i = 0; i < devices.size(); i++) {
739     VirtualMidiDevice* pDev = devices[i];
740     // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
741     while (pDev->GetMidiEventFromDevice(devEvent)) {
742 schoenebeck 3205 if (pEvents->poolIsEmpty()) {
743     dmsg(1,("Event pool emtpy!\n"));
744     goto exitVirtualDevicesLoop;
745     }
746    
747     // copy event to internal event list (this is already
748     // required here, because the LaunchNewNote() call below
749     // requires the event to be from the internal event pool for
750     // being able to generate a valid event ID)
751     RTList<Event>::Iterator itEvent = pEvents->allocAppend();
752     *itEvent = event;
753    
754     itEvent->pEngineChannel = this;
755    
756 schoenebeck 2025 switch (devEvent.Type) {
757     case VirtualMidiDevice::EVENT_TYPE_NOTEON:
758 schoenebeck 3205 itEvent->Type = Event::type_note_on;
759     itEvent->Param.Note.Key = devEvent.Arg1;
760     itEvent->Param.Note.Velocity = devEvent.Arg2;
761     itEvent->Param.Note.Channel = channel;
762 schoenebeck 2879 // apply transpose setting to (note on/off) event
763 schoenebeck 3205 if (!applyTranspose(&*itEvent)) {
764     // note value is out of range, so drop this event
765     pEvents->free(itEvent);
766     continue;
767     }
768 schoenebeck 2879 // assign a new note to this note-on event
769 schoenebeck 3205 if (!pEngine->LaunchNewNote(this, itEvent)) {
770     // failed launching new note, so drop this event
771     pEvents->free(itEvent);
772     continue;
773     }
774 schoenebeck 2025 break;
775     case VirtualMidiDevice::EVENT_TYPE_NOTEOFF:
776 schoenebeck 3205 itEvent->Type = Event::type_note_off;
777     itEvent->Param.Note.Key = devEvent.Arg1;
778     itEvent->Param.Note.Velocity = devEvent.Arg2;
779     itEvent->Param.Note.Channel = channel;
780     if (!applyTranspose(&*itEvent)) {
781     // note value is out of range, so drop this event
782     pEvents->free(itEvent);
783     continue;
784     }
785 schoenebeck 2025 break;
786     case VirtualMidiDevice::EVENT_TYPE_CC:
787 schoenebeck 2521 switch (devEvent.Arg1) {
788     case 0: // bank select MSB ...
789     SetMidiBankMsb(devEvent.Arg2);
790 schoenebeck 3205 // don't push this event into FIFO
791     pEvents->free(itEvent);
792     continue;
793 schoenebeck 2521 case 32: // bank select LSB ...
794     SetMidiBankLsb(devEvent.Arg2);
795 schoenebeck 3205 // don't push this event into FIFO
796     pEvents->free(itEvent);
797     continue;
798 schoenebeck 2521 default: // regular MIDI CC ...
799 schoenebeck 3205 itEvent->Type = Event::type_control_change;
800     itEvent->Param.CC.Controller = devEvent.Arg1;
801     itEvent->Param.CC.Value = devEvent.Arg2;
802     itEvent->Param.CC.Channel = channel;
803 schoenebeck 2521 }
804 schoenebeck 2025 break;
805 schoenebeck 2521 case VirtualMidiDevice::EVENT_TYPE_PITCHBEND:
806 schoenebeck 3205 itEvent->Type = Event::type_pitchbend;
807     itEvent->Param.Pitch.Pitch = int(devEvent.Arg2 << 7 | devEvent.Arg1) - 8192;
808     itEvent->Param.Pitch.Channel = channel;
809 schoenebeck 2521 break;
810     case VirtualMidiDevice::EVENT_TYPE_PROGRAM:
811     SendProgramChange(devEvent.Arg1);
812 schoenebeck 3205 // don't push this event into FIFO
813     pEvents->free(itEvent);
814     continue;
815 schoenebeck 3018 case VirtualMidiDevice::EVENT_TYPE_CHPRESSURE:
816 schoenebeck 3205 itEvent->Type = Event::type_channel_pressure;
817     itEvent->Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH;
818     itEvent->Param.ChannelPressure.Value = devEvent.Arg2;
819     itEvent->Param.ChannelPressure.Channel = channel;
820 schoenebeck 3018 break;
821 schoenebeck 2025 default:
822     std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type ("
823     << devEvent.Type << "). This is a bug!";
824 schoenebeck 3205 pEvents->free(itEvent); // drop event
825 schoenebeck 2025 continue;
826     }
827 iliev 2012 }
828     }
829     }
830     exitVirtualDevicesLoop:
831     virtualMidiDevicesReader_AudioThread.Unlock();
832    
833     // import events from the regular MIDI devices
834     RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
835     Event* pEvent;
836     while (true) {
837     // get next event from input event queue
838     if (!(pEvent = eventQueueReader.pop())) break;
839     // if younger event reached, ignore that and all subsequent ones for now
840     if (pEvent->FragmentPos() >= Samples) {
841     eventQueueReader--;
842     dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
843     pEvent->ResetFragmentPos();
844     break;
845     }
846     if (pEvents->poolIsEmpty()) {
847     dmsg(1,("Event pool emtpy!\n"));
848     break;
849     }
850 schoenebeck 3205
851     // copy event to internal event list
852     // (required already because LaunchNewNote() relies on it, see
853     // comment about it above)
854     RTList<Event>::Iterator itEvent = pEvents->allocAppend();
855     *itEvent = *pEvent;
856    
857 schoenebeck 2879 // apply transpose setting to (note on/off) event
858 schoenebeck 3205 if (!applyTranspose(&*itEvent)) {
859     // it's a note event which has a note value out of range, so drop this event
860     pEvents->free(itEvent);
861     continue;
862     }
863 schoenebeck 2879 // assign a new note to this event (if its a note-on event)
864 schoenebeck 3205 if (itEvent->Type == Event::type_note_on) {
865     if (!pEngine->LaunchNewNote(this, itEvent)) {
866     // failed launching new note, so drop this event
867     pEvents->free(itEvent);
868     continue;
869     }
870     }
871    
872 iliev 2012 }
873     eventQueueReader.free(); // free all copied events from input queue
874     }
875 schoenebeck 2598
876 schoenebeck 2596 /**
877     * Called by real-time instrument script functions to schedule a new event
878 schoenebeck 2871 * @a delay microseconds in future.
879     *
880     * @b IMPORTANT: for the supplied @a delay to be scheduled correctly, the
881     * passed @a pEvent must be assigned a valid fragment time within the
882     * current audio fragment boundaries. That fragment time will be used by
883     * this method as basis for interpreting what "now" acutally is, and thus
884     * it will be used as basis for calculating the precise scheduling time
885     * for @a delay. The easiest way to achieve this is by copying a recent
886     * event which happened within the current audio fragment cycle: i.e. the
887     * original event which caused calling this method here.
888 schoenebeck 2598 *
889 schoenebeck 2871 * @param pEvent - event to be scheduled in future (event data will be copied)
890     * @param delay - amount of microseconds in future (from now) when event shall be processed
891 schoenebeck 2879 * @returns unique event ID of scheduled new event, or NULL on error
892 schoenebeck 2596 */
893 schoenebeck 3557 event_id_t AbstractEngineChannel::ScheduleEventMicroSec(const Event* pEvent, int64_t delay) {
894     dmsg(3,("AbstractEngineChannel::ScheduleEventMicroSec(Event.Type=%d,delay=%lld)\n", pEvent->Type, delay));
895 schoenebeck 2596 RTList<Event>::Iterator itEvent = pEvents->allocAppend();
896 schoenebeck 2871 if (!itEvent) {
897     dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): Event pool emtpy!\n"));
898 schoenebeck 2879 return 0;
899 schoenebeck 2871 }
900     RTList<ScheduledEvent>::Iterator itNode = delayedEvents.schedulerNodes.allocAppend();
901     if (!itNode) { // scheduler node pool empty ...
902     dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): ScheduledEvent pool empty!\n"));
903     pEvents->free(itEvent);
904 schoenebeck 2879 return 0;
905 schoenebeck 2871 }
906     // copy passed event
907     *itEvent = *pEvent;
908     // move copied event to list of delayed events
909     itEvent = itEvent.moveToEndOf(delayedEvents.pList);
910     // connect scheduler node with the copied event
911     itNode->itEvent = itEvent;
912     // add entry to time sorted scheduler queue for copied event
913     pEngine->pEventGenerator->scheduleAheadMicroSec(
914     delayedEvents.queue, *itNode, itEvent->FragmentPos(), delay
915     );
916     //dmsg(5,("ScheduledEvent queue size: %d\n", delayedEvents.queue.size()));
917 schoenebeck 2598 return pEvents->getID(itEvent);
918 schoenebeck 2596 }
919 iliev 2012
920 schoenebeck 2598 /**
921     * Called by real-time instrument script functions to ignore the event
922     * reflected by given event ID. The event will be freed immediately to its
923     * pool and cannot be dereferenced by its old ID anymore. Even if its
924     * allocated back from the Pool later on, it will have a different ID.
925 schoenebeck 2879 *
926     * @param id - unique ID of event to be dropped
927 schoenebeck 2598 */
928 schoenebeck 2879 void AbstractEngineChannel::IgnoreEvent(event_id_t id) {
929 schoenebeck 2598 RTList<Event>::Iterator it = pEvents->fromID(id);
930     if (it) pEvents->free(it);
931     }
932    
933 schoenebeck 2879 /** @brief Drop the requested event.
934     *
935     * Called by real-time instrument script functions to ignore the event
936     * reflected by the given event @a id. This method detects whether the
937     * passed ID is actually a @c Note ID or a regular @c Event ID and act
938     * accordingly.
939     *
940     * @param id - event id (from script scope)
941     * @see ScriptID
942     */
943     void AbstractEngineChannel::IgnoreEventByScriptID(const ScriptID& id) {
944     switch (id.type()) {
945     case ScriptID::EVENT:
946     IgnoreEvent( id.eventID() );
947     break;
948     case ScriptID::NOTE:
949     IgnoreNote( id.noteID() );
950     break;
951     }
952     }
953    
954 schoenebeck 2948 /** @brief Order resuming of script execution instance "now".
955     *
956     * Called by real-time instrument script function stop_wait() to resume a
957     * script callback currently being suspended (i.e. due to a wait() script
958     * function call).
959     *
960     * @param itCallback - suspended script callback to be resumed
961     * @param now - current scheduler time to be "now"
962     * @param forever - whether this particulare script callback should ignore
963     * all subsequent wait*() script function calls
964     */
965     void AbstractEngineChannel::ScheduleResumeOfScriptCallback(RTList<ScriptEvent>::Iterator& itCallback, sched_time_t now, bool forever) {
966     // ignore if invalid iterator was passed
967     if (!itCallback) return;
968    
969     ScriptEvent* pCallback = &*itCallback;
970    
971     // mark this callback to ignore all subsequent built-in wait*() script function calls
972     if (forever) pCallback->ignoreAllWaitCalls = true;
973    
974     // ignore if callback is not in the scheduler queue
975     if (pCallback->currentSchedulerQueue() != &pScript->suspendedEvents) return;
976    
977     // ignore if callback is already scheduled to be resumed "now"
978     if (pCallback->scheduleTime <= now) return;
979    
980     // take it out from the scheduler queue and re-insert callback
981     // to schedule the script callback for resuming execution "now"
982     pScript->suspendedEvents.erase(*pCallback);
983     pCallback->scheduleTime = now + 1;
984     pScript->suspendedEvents.insert(*pCallback);
985     }
986    
987 schoenebeck 3293 /** @brief Fork the given script execution instance.
988     *
989     * Called by real-time instrument script function fork() to create a new
990     * script execution instance (child) of the script execution instance
991     * (parent) that was calling fork(). This is essentially like creating a
992     * new thread for a script handler being executing. The entire execution
993     * state of parent is copied to the "forked" child.
994     *
995     * @param parent - original active script callback instance from which the
996     * new child shall be forked from
997     * @param bAutoAbort - whether the forked child shall automatically be
998     * terminated as soon as parent terminates
999     * @returns forked new child execution instance
1000     */
1001     RTList<ScriptEvent>::Iterator AbstractEngineChannel::forkScriptCallback(ScriptEvent* parent, bool bAutoAbort) {
1002     // check if the max. amount of child forks for this parent event handler
1003     // instance have not been exceeded yet
1004     if (parent->countChildHandlers() >= MAX_FORK_PER_SCRIPT_HANDLER)
1005     return RTList<ScriptEvent>::Iterator();
1006    
1007     // allocate a new script callback instance for child to be forked
1008     RTList<ScriptEvent>::Iterator itChild = pScript->pEvents->allocAppend();
1009     if (!itChild) return itChild;
1010    
1011     // copy entire script handler state from parent to forked child
1012     parent->forkTo(&*itChild, bAutoAbort);
1013    
1014     // stick the parent ID and child ID respectively to each other
1015     itChild->parentHandlerID = GetScriptCallbackID(parent);
1016     parent->addChildHandlerID( GetScriptCallbackID(&*itChild) );
1017    
1018     // insert newly created (forked) child event handler instance to the
1019     // scheduler queue for being executed soon
1020     pEngine->pEventGenerator->scheduleAheadMicroSec(
1021     pScript->suspendedEvents, // scheduler queue
1022     *itChild, // script event
1023     parent->cause.FragmentPos(), // current time of script event (basis for its next execution)
1024     0 // "resume" new child script callback instance ASAP
1025     );
1026    
1027     return itChild;
1028     }
1029    
1030 iliev 2012 FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
1031     if (pEngine) pEngine->DisableAndLock();
1032     FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
1033     if (fxSends.empty()) {
1034     if (pEngine && pEngine->pAudioOutputDevice) {
1035     AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
1036     // create local render buffers
1037     pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
1038     pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
1039     } else {
1040     // postpone local render buffer creation until audio device is assigned
1041     pChannelLeft = NULL;
1042     pChannelRight = NULL;
1043     }
1044     }
1045     fxSends.push_back(pFxSend);
1046     if (pEngine) pEngine->Enable();
1047     fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
1048    
1049     return pFxSend;
1050     }
1051    
1052     FxSend* AbstractEngineChannel::GetFxSend(uint FxSendIndex) {
1053     return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
1054     }
1055    
1056     uint AbstractEngineChannel::GetFxSendCount() {
1057 schoenebeck 3054 return (uint)fxSends.size();
1058 iliev 2012 }
1059    
1060     void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) {
1061     if (pEngine) pEngine->DisableAndLock();
1062     for (
1063     std::vector<FxSend*>::iterator iter = fxSends.begin();
1064     iter != fxSends.end(); iter++
1065     ) {
1066     if (*iter == pFxSend) {
1067     delete pFxSend;
1068     fxSends.erase(iter);
1069     if (fxSends.empty()) {
1070     // destroy local render buffers
1071     if (pChannelLeft) delete pChannelLeft;
1072     if (pChannelRight) delete pChannelRight;
1073     // fallback to render directly into AudioOutputDevice's buffers
1074     if (pEngine && pEngine->pAudioOutputDevice) {
1075     pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
1076     pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
1077     } else { // we update the pointers later
1078     pChannelLeft = NULL;
1079     pChannelRight = NULL;
1080     }
1081     }
1082     break;
1083     }
1084     }
1085     if (pEngine) pEngine->Enable();
1086     fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
1087     }
1088    
1089     void AbstractEngineChannel::RemoveAllFxSends() {
1090     if (pEngine) pEngine->DisableAndLock();
1091     if (!fxSends.empty()) { // free local render buffers
1092     if (pChannelLeft) {
1093     delete pChannelLeft;
1094     if (pEngine && pEngine->pAudioOutputDevice) {
1095     // fallback to render directly to the AudioOutputDevice's buffer
1096     pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
1097     } else pChannelLeft = NULL;
1098     }
1099     if (pChannelRight) {
1100     delete pChannelRight;
1101     if (pEngine && pEngine->pAudioOutputDevice) {
1102     // fallback to render directly to the AudioOutputDevice's buffer
1103     pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
1104     } else pChannelRight = NULL;
1105     }
1106     }
1107     for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
1108     fxSends.clear();
1109     if (pEngine) pEngine->Enable();
1110     }
1111    
1112 persson 2114 /**
1113     * Add a group number to the set of key groups. Should be called
1114     * when an instrument is loaded to make sure there are event lists
1115     * for all key groups.
1116     */
1117     void AbstractEngineChannel::AddGroup(uint group) {
1118     if (group) {
1119 persson 2127 std::pair<ActiveKeyGroupMap::iterator, bool> p =
1120     ActiveKeyGroups.insert(ActiveKeyGroupMap::value_type(group, 0));
1121 persson 2114 if (p.second) {
1122 persson 2127 // If the engine channel is pending deletion (see bug
1123     // #113), pEngine will be null, so we can't use
1124     // pEngine->pEventPool here. Instead we're using a
1125     // specialized RTList that allows specifying the pool
1126     // later.
1127     (*p.first).second = new LazyList<Event>;
1128 persson 2114 }
1129     }
1130     }
1131    
1132     /**
1133     * Handle key group (a.k.a. exclusive group) conflicts.
1134     */
1135     void AbstractEngineChannel::HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent) {
1136     dmsg(4,("HandelKeyGroupConflicts KeyGroup=%d\n", KeyGroup));
1137     if (KeyGroup) {
1138     // send a release event to all active voices in the group
1139 persson 2127 RTList<Event>::Iterator itEvent = ActiveKeyGroups[KeyGroup]->allocAppend(pEngine->pEventPool);
1140 persson 2114 *itEvent = *itNoteOnEvent;
1141     }
1142     }
1143    
1144     /**
1145     * Empty the lists of group events. Should be called from the
1146     * audio thread, after all voices have been rendered.
1147     */
1148     void AbstractEngineChannel::ClearGroupEventLists() {
1149 persson 2127 for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin();
1150 persson 2114 iter != ActiveKeyGroups.end(); iter++) {
1151     if (iter->second) {
1152     iter->second->clear();
1153     } else {
1154     dmsg(1,("EngineChannel: group event list was NULL"));
1155     }
1156     }
1157     }
1158    
1159     /**
1160     * Remove all lists with group events.
1161     */
1162     void AbstractEngineChannel::DeleteGroupEventLists() {
1163 persson 2127 for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin();
1164 persson 2114 iter != ActiveKeyGroups.end(); iter++) {
1165     delete iter->second;
1166     }
1167     ActiveKeyGroups.clear();
1168     }
1169    
1170 iliev 2012 } // namespace LinuxSampler

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