engines/sf2/EngineChannel.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 "EngineChannel.h"
#include "Engine.h"

namespace LinuxSampler { namespace sf2 {
    EngineChannel::EngineChannel() {
        for(int i = 0; i < 128; i++) PressedKeys[i] = false;
        LastKey = LastKeySwitch = -1;
    }

    EngineChannel::~EngineChannel() {
        DisconnectAudioOutputDevice();
        // In case the channel was removed before the instrument was
        // fully loaded, try to give back instrument again (see bug #113)
        InstrumentChangeCmd< ::sf2::Region, ::sf2::Preset>& cmd = ChangeInstrument(NULL);
        if (cmd.pInstrument) {
            Engine::instruments.HandBack(cmd.pInstrument, this);
        }
        ///////
    }

    AbstractEngine::Format EngineChannel::GetEngineFormat() { return AbstractEngine::SF2; }

    /** This method is not thread safe! */
    void EngineChannel::ResetInternal() {
        CurrentKeyDimension = 0;
        EngineChannelBase<Voice, ::sf2::Region, ::sf2::Preset>::ResetInternal();
        for(int i = 0; i < 128; i++) PressedKeys[i] = false;
    }

    /**
     *  Will be called by the MIDIIn Thread to signal that a program
     *  change should be performed. As a program change isn't
     *  real-time safe, the actual change is performed by the disk
     *  thread.
     *
     *  @param Program     - MIDI program change number
     */
    void EngineChannel::SendProgramChange(uint8_t Program) {
        Engine* engine = dynamic_cast<Engine*>(pEngine);
        if(engine == NULL) return;

        if(engine->GetDiskThread()) {
            engine->GetDiskThread()->OrderProgramChange(Program, this);
        } else {
            // TODO: 
        }
    }

    /**
     * Load an instrument from a .sf2 file. PrepareLoadInstrument() has to
     * be called first to provide the information which instrument to load.
     * This method will then actually start to load the instrument and block
     * the calling thread until loading was completed.
     *
     * @see PrepareLoadInstrument()
     */
    void EngineChannel::LoadInstrument() {
        InstrumentResourceManager* pInstrumentManager = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager());

        // make sure we don't trigger any new notes with an old
        // instrument
        InstrumentChangeCmd< ::sf2::Region, ::sf2::Preset>& cmd = ChangeInstrument(0);
        if (cmd.pInstrument) {
            // give old instrument back to instrument manager, but
            // keep the dimension regions and samples that are in use
            pInstrumentManager->HandBackInstrument(cmd.pInstrument, this, cmd.pRegionsInUse);
        }
        cmd.pRegionsInUse->clear();

        // delete all key groups
        DeleteGroupEventLists();

        // request sf2 instrument from instrument manager
        ::sf2::Preset* newInstrument;
        try {
            InstrumentManager::instrument_id_t instrid;
            instrid.FileName  = InstrumentFile;
            instrid.Index     = InstrumentIdx;

            newInstrument = pInstrumentManager->Borrow(instrid, this);
            if (!newInstrument) {
                throw InstrumentManagerException("resource was not created");
            }
        }
        catch (InstrumentManagerException e) {
            InstrumentStat = -3;
            StatusChanged(true);
            String msg = "sf2::Engine error: Failed to load instrument, cause: " + e.Message();
            throw Exception(msg);
        }
        catch (::sf2::Exception e) {
            InstrumentStat = -3;
            StatusChanged(true);
            String msg = "sf2::Engine error: Failed to load instrument, cause: " + e.Message;
            throw Exception(msg);
        }
        catch (::std::runtime_error e) {
            InstrumentStat = -3;
            StatusChanged(true);
            String msg = "sf2::Engine error: Failed to load instrument, cause: ";
            msg += e.what();
            throw Exception(msg);
        }
        catch (...) {
            InstrumentStat = -4;
            StatusChanged(true);
            throw Exception("sf2::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse sf2 file.");
        }

        // rebuild ActiveKeyGroups map with key groups of current instrument
        for (int i = 0 ; i < newInstrument->GetRegionCount() ; i++) {
            ::sf2::Region* pRegion = newInstrument->GetRegion(i);
            for (int j = 0 ; j < pRegion->pInstrument->GetRegionCount() ; j++) {
                ::sf2::Region* pSubRegion = pRegion->pInstrument->GetRegion(j);
                AddGroup(pSubRegion->exclusiveClass);
            }
        }

        InstrumentIdxName = newInstrument->GetName();
        InstrumentStat = 100;

        ChangeInstrument(newInstrument);

        StatusChanged(true);
    }

    void EngineChannel::ProcessKeySwitchChange(int key) { }

}} // 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 "EngineChannel.h"
26	#include "Engine.h"
27
28	namespace LinuxSampler { namespace sf2 {
29	EngineChannel::EngineChannel() {
30	for(int i = 0; i < 128; i++) PressedKeys[i] = false;
31	LastKey = LastKeySwitch = -1;
32	}
33
34	EngineChannel::~EngineChannel() {
35	DisconnectAudioOutputDevice();
36	// In case the channel was removed before the instrument was
37	// fully loaded, try to give back instrument again (see bug #113)
38	InstrumentChangeCmd< ::sf2::Region, ::sf2::Preset>& cmd = ChangeInstrument(NULL);
39	if (cmd.pInstrument) {
40	Engine::instruments.HandBack(cmd.pInstrument, this);
41	}
42	///////
43	}
44
45	AbstractEngine::Format EngineChannel::GetEngineFormat() { return AbstractEngine::SF2; }
46
47	/** This method is not thread safe! */
48	void EngineChannel::ResetInternal() {
49	CurrentKeyDimension = 0;
50	EngineChannelBase<Voice, ::sf2::Region, ::sf2::Preset>::ResetInternal();
51	for(int i = 0; i < 128; i++) PressedKeys[i] = false;
52	}
53
54	/**
55	* Will be called by the MIDIIn Thread to signal that a program
56	* change should be performed. As a program change isn't
57	* real-time safe, the actual change is performed by the disk
58	* thread.
59	*
60	* @param Program - MIDI program change number
61	*/
62	void EngineChannel::SendProgramChange(uint8_t Program) {
63	Engine* engine = dynamic_cast<Engine*>(pEngine);
64	if(engine == NULL) return;
65
66	if(engine->GetDiskThread()) {
67	engine->GetDiskThread()->OrderProgramChange(Program, this);
68	} else {
69	// TODO:
70	}
71	}
72
73	/**
74	* Load an instrument from a .sf2 file. PrepareLoadInstrument() has to
75	* be called first to provide the information which instrument to load.
76	* This method will then actually start to load the instrument and block
77	* the calling thread until loading was completed.
78	*
79	* @see PrepareLoadInstrument()
80	*/
81	void EngineChannel::LoadInstrument() {
82	InstrumentResourceManager* pInstrumentManager = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager());
83
84	// make sure we don't trigger any new notes with an old
85	// instrument
86	InstrumentChangeCmd< ::sf2::Region, ::sf2::Preset>& cmd = ChangeInstrument(0);
87	if (cmd.pInstrument) {
88	// give old instrument back to instrument manager, but
89	// keep the dimension regions and samples that are in use
90	pInstrumentManager->HandBackInstrument(cmd.pInstrument, this, cmd.pRegionsInUse);
91	}
92	cmd.pRegionsInUse->clear();
93
94	// delete all key groups
95	DeleteGroupEventLists();
96
97	// request sf2 instrument from instrument manager
98	::sf2::Preset* newInstrument;
99	try {
100	InstrumentManager::instrument_id_t instrid;
101	instrid.FileName = InstrumentFile;
102	instrid.Index = InstrumentIdx;
103
104	newInstrument = pInstrumentManager->Borrow(instrid, this);
105	if (!newInstrument) {
106	throw InstrumentManagerException("resource was not created");
107	}
108	}
109	catch (InstrumentManagerException e) {
110	InstrumentStat = -3;
111	StatusChanged(true);
112	String msg = "sf2::Engine error: Failed to load instrument, cause: " + e.Message();
113	throw Exception(msg);
114	}
115	catch (::sf2::Exception e) {
116	InstrumentStat = -3;
117	StatusChanged(true);
118	String msg = "sf2::Engine error: Failed to load instrument, cause: " + e.Message;
119	throw Exception(msg);
120	}
121	catch (::std::runtime_error e) {
122	InstrumentStat = -3;
123	StatusChanged(true);
124	String msg = "sf2::Engine error: Failed to load instrument, cause: ";
125	msg += e.what();
126	throw Exception(msg);
127	}
128	catch (...) {
129	InstrumentStat = -4;
130	StatusChanged(true);
131	throw Exception("sf2::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse sf2 file.");
132	}
133
134	// rebuild ActiveKeyGroups map with key groups of current instrument
135	for (int i = 0 ; i < newInstrument->GetRegionCount() ; i++) {
136	::sf2::Region* pRegion = newInstrument->GetRegion(i);
137	for (int j = 0 ; j < pRegion->pInstrument->GetRegionCount() ; j++) {
138	::sf2::Region* pSubRegion = pRegion->pInstrument->GetRegion(j);
139	AddGroup(pSubRegion->exclusiveClass);
140	}
141	}
142
143	InstrumentIdxName = newInstrument->GetName();
144	InstrumentStat = 100;
145
146	ChangeInstrument(newInstrument);
147
148	StatusChanged(true);
149	}
150
151	void EngineChannel::ProcessKeySwitchChange(int key) { }
152
153	}} // namespace LinuxSampler::sf2