engines/sfz/Engine.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck    *
 *   Copyright (C) 2005-2009 Christian Schoenebeck                         *
 *   Copyright (C) 2009-2012 Grigor Iliev                                  *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "Engine.h"
#include "EngineChannel.h"

namespace LinuxSampler { namespace sfz {
    Engine::Format Engine::GetEngineFormat() { return SFZ; }
    
    Engine::Engine() {
        pCCPool = new Pool<CCSignalUnit::CC>(GLOBAL_MAX_VOICES * MaxCCPerVoice);
        pSmootherPool = new Pool<Smoother>(GLOBAL_MAX_VOICES * MaxCCPerVoice);
        for (VoiceIterator iterVoice = GetVoicePool()->allocAppend(); iterVoice == GetVoicePool()->last(); iterVoice = GetVoicePool()->allocAppend()) {
            (static_cast<SfzSignalUnitRack*>(iterVoice->pSignalUnitRack))->InitRTLists();
        }
        GetVoicePool()->clear();
    }
    
    Engine::~Engine() {
        if (pCCPool) {
            pCCPool->clear();
            delete pCCPool;
        }
        
        if (pSmootherPool) {
            pSmootherPool->clear();
            delete pSmootherPool;
        }
    }
    
    void Engine::PostSetMaxVoices(int iVoices) {
        pCCPool->resizePool(iVoices * MaxCCPerVoice);
        pSmootherPool->resizePool(iVoices * MaxCCPerVoice);
        
        for (VoiceIterator iterVoice = GetVoicePool()->allocAppend(); iterVoice == GetVoicePool()->last(); iterVoice = GetVoicePool()->allocAppend()) {
            (static_cast<SfzSignalUnitRack*>(iterVoice->pSignalUnitRack))->InitRTLists();
        }
        GetVoicePool()->clear();
    }

    /**
     *  Reacts on supported control change commands (e.g. pitch bend wheel,
     *  modulation wheel, aftertouch).
     *
     *  @param pEngineChannel - engine channel on which this event occured on
     *  @param itControlChangeEvent - controller, value and time stamp of the event
     */
    void Engine::ProcessControlChange (
        LinuxSampler::EngineChannel*  pEngineChannel,
        Pool<Event>::Iterator&        itControlChangeEvent
    ) {
        uint8_t cc = itControlChangeEvent->Param.CC.Controller;
        dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", cc, itControlChangeEvent->Param.CC.Value));

        EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);

        // update controller value in the engine channel's controller table
        pChannel->ControllerTable[cc] = itControlChangeEvent->Param.CC.Value;

        ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent);

        // handle FX send controllers
        ProcessFxSendControllers(pChannel, itControlChangeEvent);

        // handle control triggered regions: a control change event
        // can trigger a new voice
        if (pChannel->pInstrument && cc < 128) {

            ::sfz::Query q;
            q.chan        = itControlChangeEvent->Param.CC.Channel + 1;
            q.key         = 60;
            q.vel         = 127;
            q.bend        = pChannel->Pitch;
            q.bpm         = 0;
            q.chanaft     = pChannel->ControllerTable[128];
            q.polyaft     = 0;
            q.prog        = 0;
            q.rand        = Random();
            q.cc          = pChannel->ControllerTable;
            q.timer       = 0;
            q.sw          = pChannel->PressedKeys;
            q.last_sw_key = pChannel->LastKeySwitch;
            q.prev_sw_key = pChannel->LastKey;
            q.trig        = TRIGGER_ATTACK | TRIGGER_FIRST;

            q.search(pChannel->pInstrument, cc);

            NoteIterator itNewNote;

            int i = 0;
            while (::sfz::Region* region = q.next()) {
                if (!RegionSuspended(region)) {
                    itControlChangeEvent->Param.Note.Key = 60;
                    itControlChangeEvent->Param.Note.Velocity = 127;
                    itControlChangeEvent->Param.Note.pRegion = region;
                    if (!itNewNote) {
                        const note_id_t noteID = LaunchNewNote(pEngineChannel, &*itControlChangeEvent);
                        itNewNote = GetNotePool()->fromID(noteID);
                        if (!itNewNote) {
                            dmsg(1,("sfz::Engine: Note pool empty!\n"));
                            return;
                        }
                    }
                    VoiceIterator itNewVoice =
                        LaunchVoice(pChannel, itControlChangeEvent, i, false, false, true);
                    if (itNewVoice)
                        itNewVoice.moveToEndOf(itNewNote->pActiveVoices);
                }
                i++;
            }
        }
    }

    void Engine::ProcessChannelPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itChannelPressureEvent) {
        // forward this to the CC routine, so it updates the current aftertouch value
        ProcessControlChange(pEngineChannel, itChannelPressureEvent);

        // if required: engine global aftertouch handling (apart from the per voice handling)
    }

    void Engine::ProcessPolyphonicKeyPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNotePressureEvent) {
        // if required: engine global aftertouch handling (apart from the per voice handling)
    }

    DiskThread* Engine::CreateDiskThread() {
        return new DiskThread (
            iMaxDiskStreams,
            ((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo
            &instruments
        );
    }

    void Engine::TriggerNewVoices (
        LinuxSampler::EngineChannel* pEngineChannel,
        RTList<Event>::Iterator&     itNoteOnEvent,
        bool                         HandleKeyGroupConflicts
    ) {
        EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
        //MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
        ::sfz::Query q;
        q.chan        = itNoteOnEvent->Param.Note.Channel + 1;
        q.key         = itNoteOnEvent->Param.Note.Key;
        q.vel         = itNoteOnEvent->Param.Note.Velocity;
        q.bend        = pChannel->Pitch;
        q.bpm         = 0;
        q.chanaft     = pChannel->ControllerTable[128];
        q.polyaft     = 0;
        q.prog        = 0;
        q.rand        = Random();
        q.cc          = pChannel->ControllerTable;
        q.timer       = 0;
        q.sw          = pChannel->PressedKeys;
        q.last_sw_key = pChannel->LastKeySwitch;
        q.prev_sw_key = pChannel->LastKey;
        q.trig        = TRIGGER_ATTACK |
            ((pChannel->LastKey != -1 &&
              pChannel->PressedKeys[pChannel->LastKey] &&
              pChannel->LastKey != q.key) ?
             TRIGGER_LEGATO : TRIGGER_FIRST);

        q.search(pChannel->pInstrument);

        NoteIterator itNote = GetNotePool()->fromID(itNoteOnEvent->Param.Note.ID);
        if (!itNote) {
            dmsg(1,("sfz::Engine: No Note object for triggering new voices!\n"));
            return;
        }

        int i = 0;
        while (::sfz::Region* region = q.next()) {
            if (!RegionSuspended(region)) {
                itNoteOnEvent->Param.Note.pRegion = region;
                VoiceIterator itNewVoice =
                    LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts);
                if (itNewVoice)
                    itNewVoice.moveToEndOf(itNote->pActiveVoices);
            }
            i++;
        }
    }

    void Engine::TriggerReleaseVoices (
        LinuxSampler::EngineChannel*  pEngineChannel,
        RTList<Event>::Iterator&      itNoteOffEvent
    ) {
        EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
        ::sfz::Query q;
        q.chan        = itNoteOffEvent->Param.Note.Channel + 1;
        q.key         = itNoteOffEvent->Param.Note.Key;

        // MIDI note-on velocity is used instead of note-off velocity
        q.vel         = pChannel->pMIDIKeyInfo[q.key].Velocity;
        itNoteOffEvent->Param.Note.Velocity = q.vel;

        q.bend        = pChannel->Pitch;
        q.bpm         = 0;
        q.chanaft     = pChannel->ControllerTable[128];
        q.polyaft     = 0;
        q.prog        = 0;
        q.rand        = Random();
        q.cc          = pChannel->ControllerTable;
        q.timer       = 0;
        q.sw          = pChannel->PressedKeys;
        q.last_sw_key = pChannel->LastKeySwitch;
        q.prev_sw_key = pChannel->LastKey;
        q.trig        = TRIGGER_RELEASE;

        q.search(pChannel->pInstrument);

        NoteIterator itNote = GetNotePool()->fromID(itNoteOffEvent->Param.Note.ID);
        if (!itNote) {
            dmsg(1,("sfz::Engine: No Note object for triggering new release voices!\n"));
            return;
        }

        // now launch the required amount of voices
        int i = 0;
        while (::sfz::Region* region = q.next()) {
            itNoteOffEvent->Param.Note.pRegion = region;
            VoiceIterator itNewVoice =
                LaunchVoice(pChannel, itNoteOffEvent, i, true, false, true); //FIXME: for the moment we don't perform voice stealing for release triggered samples
            if (itNewVoice)
                itNewVoice.moveToEndOf(itNote->pActiveVoices);
            i++;
        }
    }

    Pool<Voice>::Iterator Engine::LaunchVoice (
        LinuxSampler::EngineChannel*  pEngineChannel,
        Pool<Event>::Iterator&        itNoteOnEvent,
        int                           iLayer,
        bool                          ReleaseTriggerVoice,
        bool                          VoiceStealing,
        bool                          HandleKeyGroupConflicts
    ) {
        EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
        //int key = itNoteOnEvent->Param.Note.Key;
        //EngineChannel::MidiKey* pKey  = &pChannel->pMIDIKeyInfo[key];
        ::sfz::Region* pRgn = static_cast< ::sfz::Region*>(itNoteOnEvent->Param.Note.pRegion);

        Voice::type_t VoiceType =
            itNoteOnEvent->Type == Event::type_control_change ? Voice::type_controller_triggered :
            ReleaseTriggerVoice ? Voice::type_release_trigger :
            iLayer == 0 ? Voice::type_release_trigger_required :
            Voice::type_normal;
        if (pRgn->loop_mode == ::sfz::ONE_SHOT) VoiceType |= Voice::type_one_shot;

        Pool<Voice>::Iterator itNewVoice;

        if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(pRgn->group, itNoteOnEvent);

        // no need to process if sample is silent
        if (!pRgn->GetSample(false) || !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator();

        // allocate a new voice for the key
        itNewVoice = GetVoicePool()->allocAppend();
        int res = InitNewVoice (
                pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer,
                pRgn->off_by, ReleaseTriggerVoice, VoiceStealing, itNewVoice
        );
        if (!res) return itNewVoice;

        // return if this is a release triggered voice and there is no
        // releasetrigger dimension (could happen if an instrument
        // change has occured between note on and off)
        //if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator();

        return Pool<Voice>::Iterator(); // no free voice or error
    }

    bool Engine::DiskStreamSupported() {
        return true;
    }

    String Engine::Description() {
        return "SFZ Format Engine";
    }

    String Engine::Version() {
        String s = "$Revision$";
        return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
    }

}} // namespace LinuxSampler::sfz
1	iliev	2012	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck *
6			* Copyright (C) 2005-2009 Christian Schoenebeck *
7	persson	2317	* Copyright (C) 2009-2012 Grigor Iliev *
8	iliev	2012	* *
9			* This program is free software; you can redistribute it and/or modify *
10			* it under the terms of the GNU General Public License as published by *
11			* the Free Software Foundation; either version 2 of the License, or *
12			* (at your option) any later version. *
13			* *
14			* This program is distributed in the hope that it will be useful, *
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17			* GNU General Public License for more details. *
18			* *
19			* You should have received a copy of the GNU General Public License *
20			* along with this program; if not, write to the Free Software *
21			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22			* MA 02111-1307 USA *
23			***************************************************************************/
24
25			#include "Engine.h"
26			#include "EngineChannel.h"
27
28			namespace LinuxSampler { namespace sfz {
29			Engine::Format Engine::GetEngineFormat() { return SFZ; }
30	iliev	2244
31			Engine::Engine() {
32			pCCPool = new Pool<CCSignalUnit::CC>(GLOBAL_MAX_VOICES * MaxCCPerVoice);
33			pSmootherPool = new Pool<Smoother>(GLOBAL_MAX_VOICES * MaxCCPerVoice);
34			for (VoiceIterator iterVoice = GetVoicePool()->allocAppend(); iterVoice == GetVoicePool()->last(); iterVoice = GetVoicePool()->allocAppend()) {
35			(static_cast<SfzSignalUnitRack*>(iterVoice->pSignalUnitRack))->InitRTLists();
36			}
37			GetVoicePool()->clear();
38			}
39
40			Engine::~Engine() {
41			if (pCCPool) {
42			pCCPool->clear();
43			delete pCCPool;
44			}
45
46			if (pSmootherPool) {
47			pSmootherPool->clear();
48			delete pSmootherPool;
49			}
50			}
51
52			void Engine::PostSetMaxVoices(int iVoices) {
53			pCCPool->resizePool(iVoices * MaxCCPerVoice);
54			pSmootherPool->resizePool(iVoices * MaxCCPerVoice);
55
56			for (VoiceIterator iterVoice = GetVoicePool()->allocAppend(); iterVoice == GetVoicePool()->last(); iterVoice = GetVoicePool()->allocAppend()) {
57			(static_cast<SfzSignalUnitRack*>(iterVoice->pSignalUnitRack))->InitRTLists();
58			}
59			GetVoicePool()->clear();
60			}
61	iliev	2012
62			/**
63			* Reacts on supported control change commands (e.g. pitch bend wheel,
64			* modulation wheel, aftertouch).
65			*
66			* @param pEngineChannel - engine channel on which this event occured on
67			* @param itControlChangeEvent - controller, value and time stamp of the event
68			*/
69			void Engine::ProcessControlChange (
70			LinuxSampler::EngineChannel* pEngineChannel,
71			Pool<Event>::Iterator& itControlChangeEvent
72			) {
73	persson	2115	uint8_t cc = itControlChangeEvent->Param.CC.Controller;
74			dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", cc, itControlChangeEvent->Param.CC.Value));
75	iliev	2012
76	persson	2106	EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
77	iliev	2012
78			// update controller value in the engine channel's controller table
79	persson	2115	pChannel->ControllerTable[cc] = itControlChangeEvent->Param.CC.Value;
80	iliev	2012
81			ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent);
82
83			// handle FX send controllers
84			ProcessFxSendControllers(pChannel, itControlChangeEvent);
85	persson	2115
86			// handle control triggered regions: a control change event
87			// can trigger a new voice
88			if (pChannel->pInstrument && cc < 128) {
89
90			::sfz::Query q;
91	persson	2317	q.chan = itControlChangeEvent->Param.CC.Channel + 1;
92	persson	2115	q.key = 60;
93			q.vel = 127;
94			q.bend = pChannel->Pitch;
95			q.bpm = 0;
96			q.chanaft = pChannel->ControllerTable[128];
97			q.polyaft = 0;
98			q.prog = 0;
99			q.rand = Random();
100			q.cc = pChannel->ControllerTable;
101			q.timer = 0;
102			q.sw = pChannel->PressedKeys;
103			q.last_sw_key = pChannel->LastKeySwitch;
104			q.prev_sw_key = pChannel->LastKey;
105			q.trig = TRIGGER_ATTACK \| TRIGGER_FIRST;
106
107			q.search(pChannel->pInstrument, cc);
108
109	schoenebeck	2879	NoteIterator itNewNote;
110
111	persson	2115	int i = 0;
112			while (::sfz::Region* region = q.next()) {
113			if (!RegionSuspended(region)) {
114			itControlChangeEvent->Param.Note.Key = 60;
115			itControlChangeEvent->Param.Note.Velocity = 127;
116			itControlChangeEvent->Param.Note.pRegion = region;
117	schoenebeck	2879	if (!itNewNote) {
118			const note_id_t noteID = LaunchNewNote(pEngineChannel, &*itControlChangeEvent);
119			itNewNote = GetNotePool()->fromID(noteID);
120			if (!itNewNote) {
121			dmsg(1,("sfz::Engine: Note pool empty!\n"));
122			return;
123			}
124			}
125			VoiceIterator itNewVoice =
126			LaunchVoice(pChannel, itControlChangeEvent, i, false, false, true);
127			if (itNewVoice)
128			itNewVoice.moveToEndOf(itNewNote->pActiveVoices);
129	persson	2115	}
130			i++;
131			}
132			}
133	iliev	2012	}
134
135	schoenebeck	2559	void Engine::ProcessChannelPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itChannelPressureEvent) {
136	schoenebeck	3015	// forward this to the CC routine, so it updates the current aftertouch value
137			ProcessControlChange(pEngineChannel, itChannelPressureEvent);
138
139	schoenebeck	2559	// if required: engine global aftertouch handling (apart from the per voice handling)
140			}
141
142			void Engine::ProcessPolyphonicKeyPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNotePressureEvent) {
143			// if required: engine global aftertouch handling (apart from the per voice handling)
144			}
145
146	iliev	2012	DiskThread* Engine::CreateDiskThread() {
147			return new DiskThread (
148			iMaxDiskStreams,
149			((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo
150			&instruments
151			);
152			}
153
154			void Engine::TriggerNewVoices (
155			LinuxSampler::EngineChannel* pEngineChannel,
156			RTList<Event>::Iterator& itNoteOnEvent,
157			bool HandleKeyGroupConflicts
158			) {
159			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
160	schoenebeck	3034	//MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
161	persson	2106	::sfz::Query q;
162	persson	2317	q.chan = itNoteOnEvent->Param.Note.Channel + 1;
163	persson	2101	q.key = itNoteOnEvent->Param.Note.Key;
164			q.vel = itNoteOnEvent->Param.Note.Velocity;
165			q.bend = pChannel->Pitch;
166			q.bpm = 0;
167			q.chanaft = pChannel->ControllerTable[128];
168			q.polyaft = 0;
169			q.prog = 0;
170			q.rand = Random();
171			q.cc = pChannel->ControllerTable;
172			q.timer = 0;
173			q.sw = pChannel->PressedKeys;
174			q.last_sw_key = pChannel->LastKeySwitch;
175			q.prev_sw_key = pChannel->LastKey;
176			q.trig = TRIGGER_ATTACK \|
177			((pChannel->LastKey != -1 &&
178			pChannel->PressedKeys[pChannel->LastKey] &&
179			pChannel->LastKey != q.key) ?
180			TRIGGER_LEGATO : TRIGGER_FIRST);
181	iliev	2012
182	persson	2106	q.search(pChannel->pInstrument);
183
184	schoenebeck	2879	NoteIterator itNote = GetNotePool()->fromID(itNoteOnEvent->Param.Note.ID);
185			if (!itNote) {
186			dmsg(1,("sfz::Engine: No Note object for triggering new voices!\n"));
187			return;
188			}
189
190	persson	2101	int i = 0;
191			while (::sfz::Region* region = q.next()) {
192			if (!RegionSuspended(region)) {
193			itNoteOnEvent->Param.Note.pRegion = region;
194	schoenebeck	2879	VoiceIterator itNewVoice =
195			LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts);
196			if (itNewVoice)
197			itNewVoice.moveToEndOf(itNote->pActiveVoices);
198	iliev	2012	}
199	persson	2101	i++;
200	iliev	2012	}
201			}
202
203			void Engine::TriggerReleaseVoices (
204			LinuxSampler::EngineChannel* pEngineChannel,
205			RTList<Event>::Iterator& itNoteOffEvent
206			) {
207			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
208	persson	2106	::sfz::Query q;
209	persson	2317	q.chan = itNoteOffEvent->Param.Note.Channel + 1;
210	persson	2101	q.key = itNoteOffEvent->Param.Note.Key;
211	persson	2061
212			// MIDI note-on velocity is used instead of note-off velocity
213	persson	2101	q.vel = pChannel->pMIDIKeyInfo[q.key].Velocity;
214			itNoteOffEvent->Param.Note.Velocity = q.vel;
215	persson	2061
216	persson	2101	q.bend = pChannel->Pitch;
217			q.bpm = 0;
218			q.chanaft = pChannel->ControllerTable[128];
219			q.polyaft = 0;
220			q.prog = 0;
221			q.rand = Random();
222			q.cc = pChannel->ControllerTable;
223			q.timer = 0;
224			q.sw = pChannel->PressedKeys;
225			q.last_sw_key = pChannel->LastKeySwitch;
226			q.prev_sw_key = pChannel->LastKey;
227			q.trig = TRIGGER_RELEASE;
228	iliev	2012
229	persson	2106	q.search(pChannel->pInstrument);
230
231	schoenebeck	2879	NoteIterator itNote = GetNotePool()->fromID(itNoteOffEvent->Param.Note.ID);
232			if (!itNote) {
233			dmsg(1,("sfz::Engine: No Note object for triggering new release voices!\n"));
234			return;
235			}
236
237	iliev	2012	// now launch the required amount of voices
238	persson	2101	int i = 0;
239			while (::sfz::Region* region = q.next()) {
240			itNoteOffEvent->Param.Note.pRegion = region;
241	schoenebeck	2879	VoiceIterator itNewVoice =
242			LaunchVoice(pChannel, itNoteOffEvent, i, true, false, true); //FIXME: for the moment we don't perform voice stealing for release triggered samples
243			if (itNewVoice)
244			itNewVoice.moveToEndOf(itNote->pActiveVoices);
245	persson	2101	i++;
246	iliev	2012	}
247			}
248
249			Pool<Voice>::Iterator Engine::LaunchVoice (
250			LinuxSampler::EngineChannel* pEngineChannel,
251			Pool<Event>::Iterator& itNoteOnEvent,
252			int iLayer,
253			bool ReleaseTriggerVoice,
254			bool VoiceStealing,
255			bool HandleKeyGroupConflicts
256			) {
257			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
258	schoenebeck	3034	//int key = itNoteOnEvent->Param.Note.Key;
259	schoenebeck	2879	//EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
260	persson	2115	::sfz::Region* pRgn = static_cast< ::sfz::Region*>(itNoteOnEvent->Param.Note.pRegion);
261	iliev	2012
262	persson	2115	Voice::type_t VoiceType =
263			itNoteOnEvent->Type == Event::type_control_change ? Voice::type_controller_triggered :
264			ReleaseTriggerVoice ? Voice::type_release_trigger :
265			iLayer == 0 ? Voice::type_release_trigger_required :
266			Voice::type_normal;
267			if (pRgn->loop_mode == ::sfz::ONE_SHOT) VoiceType \|= Voice::type_one_shot;
268
269	iliev	2012	Pool<Voice>::Iterator itNewVoice;
270
271	persson	2317	if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(pRgn->group, itNoteOnEvent);
272
273	iliev	2012	// no need to process if sample is silent
274	persson	2317	if (!pRgn->GetSample(false) \|\| !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator();
275	iliev	2012
276			// allocate a new voice for the key
277	schoenebeck	2879	itNewVoice = GetVoicePool()->allocAppend();
278	iliev	2027	int res = InitNewVoice (
279			pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer,
280	persson	2114	pRgn->off_by, ReleaseTriggerVoice, VoiceStealing, itNewVoice
281	iliev	2027	);
282			if (!res) return itNewVoice;
283	iliev	2012
284			// return if this is a release triggered voice and there is no
285			// releasetrigger dimension (could happen if an instrument
286			// change has occured between note on and off)
287			//if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator();
288
289	iliev	2027	return Pool<Voice>::Iterator(); // no free voice or error
290	iliev	2012	}
291
292			bool Engine::DiskStreamSupported() {
293			return true;
294			}
295
296			String Engine::Description() {
297			return "SFZ Format Engine";
298			}
299
300			String Engine::Version() {
301	schoenebeck	2494	String s = "$Revision$";
302	iliev	2012	return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
303			}
304
305			}} // namespace LinuxSampler::sfz