engines/sf2/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 sf2 {
    Engine::Format Engine::GetEngineFormat() { return SF2; }

    /**
     *  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;

        int layer = 0;
        ::sf2::Query query(*pChannel->pInstrument);
        query.key = key;
        query.vel = vel;
        while (::sf2::Region* region = query.next()) {
            // TODO: Generators in the PGEN sub-chunk are applied relative to generators in the IGEN sub-chunk in an additive manner.  In
            // other words, PGEN generators increase or decrease the value of an IGEN generator.
            ::sf2::Query subQuery(*region->pInstrument);
            subQuery.key = key;
            subQuery.vel = vel;
            while (::sf2::Region* r = subQuery.next()) {
                //std::cout << r->GetSample()->GetName();
                //std::cout << " loKey: " << r->loKey << " hiKey: " << r->hiKey << " minVel: " << r->minVel << " maxVel: " << r->maxVel << " Vel: " << ((int)vel) << std::endl << std::endl;
                if (!RegionSuspended(r)) {
                    itNoteOnEvent->Param.Note.pRegion = r;
                    LaunchVoice(pChannel, itNoteOnEvent, layer, false, true, HandleKeyGroupConflicts);
                }
                layer++;
            }
        }
    }

    void Engine::TriggerReleaseVoices (
        LinuxSampler::EngineChannel*  pEngineChannel,
        RTList<Event>::Iterator&      itNoteOffEvent
    ) {

    }

    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 = Voice::type_normal;

        Pool<Voice>::Iterator itNewVoice;
        ::sf2::Region* pRgn = static_cast< ::sf2::Region*>(itNoteOnEvent->Param.Note.pRegion);

        // 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->exclusiveClass : 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 "SoundFont Format Engine";
    }

    String Engine::Version() {
        String s = "$Revision: 1.3 $";
        return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
    }

}} // namespace LinuxSampler::sf2
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 sf2 {
29			Engine::Format Engine::GetEngineFormat() { return SF2; }
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	persson	2101	// TODO:
50	iliev	2012	}
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
83	persson	2101	int layer = 0;
84			::sf2::Query query(*pChannel->pInstrument);
85			query.key = key;
86			query.vel = vel;
87			while (::sf2::Region* region = query.next()) {
88	iliev	2027	// TODO: Generators in the PGEN sub-chunk are applied relative to generators in the IGEN sub-chunk in an additive manner. In
89			// other words, PGEN generators increase or decrease the value of an IGEN generator.
90	persson	2101	::sf2::Query subQuery(*region->pInstrument);
91			subQuery.key = key;
92			subQuery.vel = vel;
93			while (::sf2::Region* r = subQuery.next()) {
94			//std::cout << r->GetSample()->GetName();
95			//std::cout << " loKey: " << r->loKey << " hiKey: " << r->hiKey << " minVel: " << r->minVel << " maxVel: " << r->maxVel << " Vel: " << ((int)vel) << std::endl << std::endl;
96			if (!RegionSuspended(r)) {
97			itNoteOnEvent->Param.Note.pRegion = r;
98			LaunchVoice(pChannel, itNoteOnEvent, layer, false, true, HandleKeyGroupConflicts);
99			}
100			layer++;
101	iliev	2027	}
102	iliev	2012	}
103			}
104
105			void Engine::TriggerReleaseVoices (
106			LinuxSampler::EngineChannel* pEngineChannel,
107			RTList<Event>::Iterator& itNoteOffEvent
108			) {
109	persson	2101
110	iliev	2012	}
111
112			Pool<Voice>::Iterator Engine::LaunchVoice (
113			LinuxSampler::EngineChannel* pEngineChannel,
114			Pool<Event>::Iterator& itNoteOnEvent,
115			int iLayer,
116			bool ReleaseTriggerVoice,
117			bool VoiceStealing,
118			bool HandleKeyGroupConflicts
119			) {
120			EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
121			int key = itNoteOnEvent->Param.Note.Key;
122	iliev	2027	EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
123	iliev	2012
124			Voice::type_t VoiceType = Voice::type_normal;
125
126			Pool<Voice>::Iterator itNewVoice;
127	persson	2101	::sf2::Region* pRgn = static_cast< ::sf2::Region*>(itNoteOnEvent->Param.Note.pRegion);
128	iliev	2012
129			// no need to process if sample is silent
130	iliev	2027	if (!pRgn->GetSample() \|\| !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator();
131	iliev	2012
132	iliev	2027	// only mark the first voice of a layered voice (group) to be in a
133			// key group, so the layered voices won't kill each other
134			int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRgn->exclusiveClass : 0;
135			if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent);
136
137	iliev	2012	// allocate a new voice for the key
138			itNewVoice = pKey->pActiveVoices->allocAppend();
139	iliev	2027	int res = InitNewVoice (
140			pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer,
141			iKeyGroup, ReleaseTriggerVoice, VoiceStealing, itNewVoice
142			);
143			if (!res) return itNewVoice;
144	iliev	2012
145			// return if this is a release triggered voice and there is no
146			// releasetrigger dimension (could happen if an instrument
147			// change has occured between note on and off)
148			//if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator();
149
150	iliev	2027	return Pool<Voice>::Iterator(); // no free voice or error
151	iliev	2012	}
152
153			bool Engine::DiskStreamSupported() {
154			return true;
155			}
156
157			String Engine::Description() {
158			return "SoundFont Format Engine";
159			}
160
161			String Engine::Version() {
162	persson	2101	String s = "$Revision: 1.3 $";
163	iliev	2012	return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
164			}
165
166			}} // namespace LinuxSampler::sf2