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 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; }

    /**
     *  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
    ) {
        dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));

        EngineChannel* pChannel = dynamic_cast<EngineChannel*>(pEngineChannel);
        // handle the "control triggered" MIDI rule: a control change
        // event can trigger a new note on or note off event
        if (pChannel->pInstrument) {

            // TODO: 
        }

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

        ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent);

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

    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);

        uint8_t  chan     = pChannel->MidiChannel();
        int      key      = itNoteOnEvent->Param.Note.Key;
        uint8_t  vel      = itNoteOnEvent->Param.Note.Velocity;
        int      bend     = pChannel->Pitch;
        uint8_t  chanaft  = pChannel->ControllerTable[128];
        uint8_t* cc       = pChannel->ControllerTable;
        ::sfz::trigger_t trig = TRIGGER_ATTACK |
              ((pChannel->LastKey != -1 &&
                pChannel->PressedKeys[pChannel->LastKey] &&
                pChannel->LastKey != key) ?
               TRIGGER_LEGATO : TRIGGER_FIRST);

        pChannel->regionsTemp = pChannel->pInstrument->GetRegionsOnKey (
            chan, key, vel, bend, 0, chanaft, 0, 0, 0, trig, cc,
            0.0f, 1, pChannel->PressedKeys, pChannel->LastKeySwitch, pChannel->LastKey
        );

        for (int i = 0; i < pChannel->regionsTemp.size(); i++) {
            if (!RegionSuspended(pChannel->regionsTemp[i])) {
                LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts);
            }
        }
    }

    void Engine::TriggerReleaseVoices (
        LinuxSampler::EngineChannel*  pEngineChannel,
        RTList<Event>::Iterator&      itNoteOffEvent
    ) {
        EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
        uint8_t  chan     = pChannel->MidiChannel();
        int      key      = itNoteOffEvent->Param.Note.Key;

        // MIDI note-on velocity is used instead of note-off velocity
        uint8_t  vel      = pChannel->pMIDIKeyInfo[key].Velocity;
        itNoteOffEvent->Param.Note.Velocity = vel;

        int      bend     = pChannel->Pitch;
        uint8_t  chanaft  = pChannel->ControllerTable[128];
        uint8_t* cc       = pChannel->ControllerTable;
        ::sfz::trigger_t trig = TRIGGER_RELEASE;

        pChannel->regionsTemp = pChannel->pInstrument->GetRegionsOnKey (
            chan, key, vel, bend, 0, chanaft, 0, 0, 0, trig, cc, 0.0f, 1, NULL, 0, 0
        );

        // now launch the required amount of voices
        for (int i = 0; i < pChannel->regionsTemp.size(); i++) {
            LaunchVoice(pChannel, itNoteOffEvent, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
        }
    }

    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];
        Voice::type_t VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal;

        Pool<Voice>::Iterator itNewVoice;
        ::sfz::Region* pRgn = pChannel->regionsTemp[iLayer];

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

        // only mark the first voice of a layered voice (group) to be in a
        // key group, so the layered voices won't kill each other
        int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRgn->group : 0;
        if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent);

        // allocate a new voice for the key
        itNewVoice = pKey->pActiveVoices->allocAppend();
        int res = InitNewVoice (
                pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer,
                iKeyGroup, 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: 1.4 $";
        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			* Copyright (C) 2009 Grigor Iliev *
8			* *
9			* This program is free software; you can redistribute it and/or modify *
10			* it under the terms of the GNU General Public License as published by *
11			* the Free Software Foundation; either version 2 of the License, or *
12			* (at your option) any later version. *
13			* *
14			* This program is distributed in the hope that it will be useful, *
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17			* GNU General Public License for more details. *
18			* *
19			* You should have received a copy of the GNU General Public License *
20			* along with this program; if not, write to the Free Software *
21			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22			* MA 02111-1307 USA *
23			***************************************************************************/
24
25			#include "Engine.h"
26			#include "EngineChannel.h"
27
28			namespace LinuxSampler { namespace sfz {
29			Engine::Format Engine::GetEngineFormat() { return SFZ; }
30
31			/**
32			* Reacts on supported control change commands (e.g. pitch bend wheel,
33			* modulation wheel, aftertouch).
34			*
35			* @param pEngineChannel - engine channel on which this event occured on
36			* @param itControlChangeEvent - controller, value and time stamp of the event
37			*/
38			void Engine::ProcessControlChange (
39			LinuxSampler::EngineChannel* pEngineChannel,
40			Pool<Event>::Iterator& itControlChangeEvent
41			) {
42			dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
43
44			EngineChannel* pChannel = dynamic_cast<EngineChannel*>(pEngineChannel);
45			// handle the "control triggered" MIDI rule: a control change
46			// event can trigger a new note on or note off event
47			if (pChannel->pInstrument) {
48
49			// TODO:
50			}
51
52			// update controller value in the engine channel's controller table
53			pChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
54
55			ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent);
56
57			// handle FX send controllers
58			ProcessFxSendControllers(pChannel, itControlChangeEvent);
59			}
60
61			DiskThread* Engine::CreateDiskThread() {
62			return new DiskThread (
63			iMaxDiskStreams,
64			((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo
65			&instruments
66			);
67			}
68
69			void Engine::TriggerNewVoices (
70			LinuxSampler::EngineChannel* pEngineChannel,
71			RTList<Event>::Iterator& itNoteOnEvent,
72			bool HandleKeyGroupConflicts
73			) {
74			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
75
76			uint8_t chan = pChannel->MidiChannel();
77			int key = itNoteOnEvent->Param.Note.Key;
78			uint8_t vel = itNoteOnEvent->Param.Note.Velocity;
79			int bend = pChannel->Pitch;
80			uint8_t chanaft = pChannel->ControllerTable[128];
81			uint8_t* cc = pChannel->ControllerTable;
82	persson	2058	::sfz::trigger_t trig = TRIGGER_ATTACK \|
83			((pChannel->LastKey != -1 &&
84			pChannel->PressedKeys[pChannel->LastKey] &&
85			pChannel->LastKey != key) ?
86			TRIGGER_LEGATO : TRIGGER_FIRST);
87	iliev	2012
88			pChannel->regionsTemp = pChannel->pInstrument->GetRegionsOnKey (
89			chan, key, vel, bend, 0, chanaft, 0, 0, 0, trig, cc,
90			0.0f, 1, pChannel->PressedKeys, pChannel->LastKeySwitch, pChannel->LastKey
91			);
92
93			for (int i = 0; i < pChannel->regionsTemp.size(); i++) {
94			if (!RegionSuspended(pChannel->regionsTemp[i])) {
95			LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts);
96			}
97			}
98			}
99
100			void Engine::TriggerReleaseVoices (
101			LinuxSampler::EngineChannel* pEngineChannel,
102			RTList<Event>::Iterator& itNoteOffEvent
103			) {
104			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
105			uint8_t chan = pChannel->MidiChannel();
106			int key = itNoteOffEvent->Param.Note.Key;
107	persson	2061
108			// MIDI note-on velocity is used instead of note-off velocity
109			uint8_t vel = pChannel->pMIDIKeyInfo[key].Velocity;
110			itNoteOffEvent->Param.Note.Velocity = vel;
111
112	iliev	2012	int bend = pChannel->Pitch;
113			uint8_t chanaft = pChannel->ControllerTable[128];
114			uint8_t* cc = pChannel->ControllerTable;
115			::sfz::trigger_t trig = TRIGGER_RELEASE;
116
117			pChannel->regionsTemp = pChannel->pInstrument->GetRegionsOnKey (
118	persson	2061	chan, key, vel, bend, 0, chanaft, 0, 0, 0, trig, cc, 0.0f, 1, NULL, 0, 0
119	iliev	2012	);
120
121			// now launch the required amount of voices
122			for (int i = 0; i < pChannel->regionsTemp.size(); i++) {
123			LaunchVoice(pChannel, itNoteOffEvent, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
124			}
125			}
126
127			Pool<Voice>::Iterator Engine::LaunchVoice (
128			LinuxSampler::EngineChannel* pEngineChannel,
129			Pool<Event>::Iterator& itNoteOnEvent,
130			int iLayer,
131			bool ReleaseTriggerVoice,
132			bool VoiceStealing,
133			bool HandleKeyGroupConflicts
134			) {
135			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
136			int key = itNoteOnEvent->Param.Note.Key;
137			EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
138	persson	2061	Voice::type_t VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal;
139	iliev	2012
140			Pool<Voice>::Iterator itNewVoice;
141			::sfz::Region* pRgn = pChannel->regionsTemp[iLayer];
142
143			// no need to process if sample is silent
144	iliev	2027	if (!pRgn->GetSample() \|\| !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator();
145	iliev	2012
146	iliev	2027	// only mark the first voice of a layered voice (group) to be in a
147			// key group, so the layered voices won't kill each other
148			int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRgn->group : 0;
149			if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent);
150
151	iliev	2012	// allocate a new voice for the key
152			itNewVoice = pKey->pActiveVoices->allocAppend();
153	iliev	2027	int res = InitNewVoice (
154			pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer,
155			iKeyGroup, ReleaseTriggerVoice, VoiceStealing, itNewVoice
156			);
157			if (!res) return itNewVoice;
158	iliev	2012
159			// return if this is a release triggered voice and there is no
160			// releasetrigger dimension (could happen if an instrument
161			// change has occured between note on and off)
162			//if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator();
163
164	iliev	2027	return Pool<Voice>::Iterator(); // no free voice or error
165	iliev	2012	}
166
167			bool Engine::DiskStreamSupported() {
168			return true;
169			}
170
171			String Engine::Description() {
172			return "SFZ Format Engine";
173			}
174
175			String Engine::Version() {
176	persson	2061	String s = "$Revision: 1.4 $";
177	iliev	2012	return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
178			}
179
180			}} // namespace LinuxSampler::sfz