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) 2009-2010 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);
    }

    void Engine::ProcessChannelPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& 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);

        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;

        NoteIterator itNote = GetNotePool()->fromID(itNoteOnEvent->Param.Note.ID);
        if (!itNote) {
            dmsg(1,("sf2::Engine: No Note object for triggering new voices!\n"));
            return;
        }

        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;
                    VoiceIterator itNewVoice =
                        LaunchVoice(pChannel, itNoteOnEvent, layer, false, true, HandleKeyGroupConflicts);
                    if (itNewVoice)
                        itNewVoice.moveToEndOf(itNote->pActiveVoices);
                }
                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();

        int iKeyGroup = pRgn->exclusiveClass;
        if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent);

        // allocate a new voice for the key
        itNewVoice = GetVoicePool()->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 = "$Revision$";
        return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
    }

}} // namespace LinuxSampler::sf2
1	/***************************************************************************
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) 2009-2010 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	// 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	void Engine::ProcessChannelPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itChannelPressureEvent) {
62	// if required: engine global aftertouch handling (apart from the per voice handling)
63	}
64
65	void Engine::ProcessPolyphonicKeyPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNotePressureEvent) {
66	// if required: engine global aftertouch handling (apart from the per voice handling)
67	}
68
69	DiskThread* Engine::CreateDiskThread() {
70	return new DiskThread (
71	iMaxDiskStreams,
72	((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo
73	&instruments
74	);
75	}
76
77	void Engine::TriggerNewVoices (
78	LinuxSampler::EngineChannel* pEngineChannel,
79	RTList<Event>::Iterator& itNoteOnEvent,
80	bool HandleKeyGroupConflicts
81	) {
82	EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
83
84	uint8_t chan = pChannel->MidiChannel();
85	int key = itNoteOnEvent->Param.Note.Key;
86	uint8_t vel = itNoteOnEvent->Param.Note.Velocity;
87	int bend = pChannel->Pitch;
88	uint8_t chanaft = pChannel->ControllerTable[128];
89	uint8_t* cc = pChannel->ControllerTable;
90
91	NoteIterator itNote = GetNotePool()->fromID(itNoteOnEvent->Param.Note.ID);
92	if (!itNote) {
93	dmsg(1,("sf2::Engine: No Note object for triggering new voices!\n"));
94	return;
95	}
96
97	int layer = 0;
98	::sf2::Query query(*pChannel->pInstrument);
99	query.key = key;
100	query.vel = vel;
101	while (::sf2::Region* region = query.next()) {
102	// TODO: Generators in the PGEN sub-chunk are applied relative to generators in the IGEN sub-chunk in an additive manner. In
103	// other words, PGEN generators increase or decrease the value of an IGEN generator.
104	::sf2::Query subQuery(*region->pInstrument);
105	subQuery.key = key;
106	subQuery.vel = vel;
107	while (::sf2::Region* r = subQuery.next()) {
108	//std::cout << r->GetSample()->GetName();
109	//std::cout << " loKey: " << r->loKey << " hiKey: " << r->hiKey << " minVel: " << r->minVel << " maxVel: " << r->maxVel << " Vel: " << ((int)vel) << std::endl << std::endl;
110	if (!RegionSuspended(r)) {
111	itNoteOnEvent->Param.Note.pRegion = r;
112	VoiceIterator itNewVoice =
113	LaunchVoice(pChannel, itNoteOnEvent, layer, false, true, HandleKeyGroupConflicts);
114	if (itNewVoice)
115	itNewVoice.moveToEndOf(itNote->pActiveVoices);
116	}
117	layer++;
118	}
119	}
120	}
121
122	void Engine::TriggerReleaseVoices (
123	LinuxSampler::EngineChannel* pEngineChannel,
124	RTList<Event>::Iterator& itNoteOffEvent
125	) {
126
127	}
128
129	Pool<Voice>::Iterator Engine::LaunchVoice (
130	LinuxSampler::EngineChannel* pEngineChannel,
131	Pool<Event>::Iterator& itNoteOnEvent,
132	int iLayer,
133	bool ReleaseTriggerVoice,
134	bool VoiceStealing,
135	bool HandleKeyGroupConflicts
136	) {
137	EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
138	int key = itNoteOnEvent->Param.Note.Key;
139	//EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
140
141	Voice::type_t VoiceType = Voice::type_normal;
142
143	Pool<Voice>::Iterator itNewVoice;
144	::sf2::Region* pRgn = static_cast< ::sf2::Region*>(itNoteOnEvent->Param.Note.pRegion);
145
146	// no need to process if sample is silent
147	if (!pRgn->GetSample() \|\| !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator();
148
149	int iKeyGroup = pRgn->exclusiveClass;
150	if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent);
151
152	// allocate a new voice for the key
153	itNewVoice = GetVoicePool()->allocAppend();
154	int res = InitNewVoice (
155	pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer,
156	iKeyGroup, ReleaseTriggerVoice, VoiceStealing, itNewVoice
157	);
158	if (!res) return itNewVoice;
159
160	// return if this is a release triggered voice and there is no
161	// releasetrigger dimension (could happen if an instrument
162	// change has occured between note on and off)
163	//if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator();
164
165	return Pool<Voice>::Iterator(); // no free voice or error
166	}
167
168	bool Engine::DiskStreamSupported() {
169	return true;
170	}
171
172	String Engine::Description() {
173	return "SoundFont Format Engine";
174	}
175
176	String Engine::Version() {
177	String s = "$Revision$";
178	return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
179	}
180
181	}} // namespace LinuxSampler::sf2