engines/sfz/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 sfz {
    EngineChannel::EngineChannel() {
        for(int i = 0; i < 128; i++) PressedKeys[i] = false;
        LastKey = LastKeySwitch = -1;
        AddMidiKeyboardListener(this);
    }

    EngineChannel::~EngineChannel() {
        DisconnectAudioOutputDevice();
        RemoveMidiKeyboardListener(this);
        // In case the channel was removed before the instrument was
        // fully loaded, try to give back instrument again (see bug #113)
        InstrumentChangeCmd< ::sfz::Region, ::sfz::Instrument>& cmd = ChangeInstrument(NULL);
        if (cmd.pInstrument) {
                InstrumentResourceManager* instrs = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager());
                instrs->HandBack(cmd.pInstrument, this);
        }
        ///////
    }

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

    /** This method is not thread safe! */
    void EngineChannel::ResetInternal() {
        CurrentKeyDimension = 0;
        EngineChannelBase<Voice, ::sfz::Region, ::sfz::Instrument>::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 .sfz 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< ::sfz::Region, ::sfz::Instrument>& 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
        ActiveKeyGroups.clear();

        // request sfz instrument from instrument manager
        ::sfz::Instrument* 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 = "sfz::Engine error: Failed to load instrument, cause: " + e.Message();
            throw Exception(msg);
        }
        catch (::sfz::Exception e) {
            InstrumentStat = -3;
            StatusChanged(true);
            String msg = "sfz::Engine error: Failed to load instrument, cause: " + e.Message();
            throw Exception(msg);
        }
        catch (::std::runtime_error e) {
            InstrumentStat = -3;
            StatusChanged(true);
            String msg = "sfz::Engine error: Failed to load instrument, cause: ";
            msg += e.what();
            throw Exception(msg);
        }
        catch (...) {
            InstrumentStat = -4;
            StatusChanged(true);
            throw Exception("sfz::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse sfz file.");
        }

        // rebuild ActiveKeyGroups map with key groups of current instrument
        for (std::vector< ::sfz::Region*>::iterator itRegion = newInstrument->regions.begin() ;
             itRegion != newInstrument->regions.end() ; ++itRegion) {
            if ((*itRegion)->group) ActiveKeyGroups[(*itRegion)->group] = NULL;
        }

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

        ChangeInstrument(newInstrument);

        StatusChanged(true);
    }

    void EngineChannel::ProcessKeySwitchChange(int key) { }

    void EngineChannel::PreProcessNoteOn(uint8_t key, uint8_t velocity) {
        if(pInstrument != NULL && pInstrument->HasKeySwitchBinding(key)) LastKeySwitch = key;
        PressedKeys[key] = true;
    }

    void EngineChannel::PostProcessNoteOn(uint8_t key, uint8_t velocity) {
        LastKey = key;
    }

    void EngineChannel::PreProcessNoteOff(uint8_t key, uint8_t velocity) {
        PressedKeys[key] = false;
    }

}} // namespace LinuxSampler::sfz
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 sfz {
29	EngineChannel::EngineChannel() {
30	for(int i = 0; i < 128; i++) PressedKeys[i] = false;
31	LastKey = LastKeySwitch = -1;
32	AddMidiKeyboardListener(this);
33	}
34
35	EngineChannel::~EngineChannel() {
36	DisconnectAudioOutputDevice();
37	RemoveMidiKeyboardListener(this);
38	// In case the channel was removed before the instrument was
39	// fully loaded, try to give back instrument again (see bug #113)
40	InstrumentChangeCmd< ::sfz::Region, ::sfz::Instrument>& cmd = ChangeInstrument(NULL);
41	if (cmd.pInstrument) {
42	InstrumentResourceManager* instrs = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager());
43	instrs->HandBack(cmd.pInstrument, this);
44	}
45	///////
46	}
47
48	AbstractEngine::Format EngineChannel::GetEngineFormat() { return AbstractEngine::SFZ; }
49
50	/** This method is not thread safe! */
51	void EngineChannel::ResetInternal() {
52	CurrentKeyDimension = 0;
53	EngineChannelBase<Voice, ::sfz::Region, ::sfz::Instrument>::ResetInternal();
54	for(int i = 0; i < 128; i++) PressedKeys[i] = false;
55	}
56
57	/**
58	* Will be called by the MIDIIn Thread to signal that a program
59	* change should be performed. As a program change isn't
60	* real-time safe, the actual change is performed by the disk
61	* thread.
62	*
63	* @param Program - MIDI program change number
64	*/
65	void EngineChannel::SendProgramChange(uint8_t Program) {
66	Engine* engine = dynamic_cast<Engine*>(pEngine);
67	if(engine == NULL) return;
68
69	if(engine->GetDiskThread()) {
70	engine->GetDiskThread()->OrderProgramChange(Program, this);
71	} else {
72	// TODO:
73	}
74	}
75
76	/**
77	* Load an instrument from a .sfz file. PrepareLoadInstrument() has to
78	* be called first to provide the information which instrument to load.
79	* This method will then actually start to load the instrument and block
80	* the calling thread until loading was completed.
81	*
82	* @see PrepareLoadInstrument()
83	*/
84	void EngineChannel::LoadInstrument() {
85	InstrumentResourceManager* pInstrumentManager = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager());
86
87	// make sure we don't trigger any new notes with an old
88	// instrument
89	InstrumentChangeCmd< ::sfz::Region, ::sfz::Instrument>& cmd = ChangeInstrument(0);
90	if (cmd.pInstrument) {
91	// give old instrument back to instrument manager, but
92	// keep the dimension regions and samples that are in use
93	pInstrumentManager->HandBackInstrument(cmd.pInstrument, this, cmd.pRegionsInUse);
94	}
95	cmd.pRegionsInUse->clear();
96
97	// delete all key groups
98	ActiveKeyGroups.clear();
99
100	// request sfz instrument from instrument manager
101	::sfz::Instrument* newInstrument;
102	try {
103	InstrumentManager::instrument_id_t instrid;
104	instrid.FileName = InstrumentFile;
105	instrid.Index = InstrumentIdx;
106
107	newInstrument = pInstrumentManager->Borrow(instrid, this);
108	if (!newInstrument) {
109	throw InstrumentManagerException("resource was not created");
110	}
111	}
112	catch (InstrumentManagerException e) {
113	InstrumentStat = -3;
114	StatusChanged(true);
115	String msg = "sfz::Engine error: Failed to load instrument, cause: " + e.Message();
116	throw Exception(msg);
117	}
118	catch (::sfz::Exception e) {
119	InstrumentStat = -3;
120	StatusChanged(true);
121	String msg = "sfz::Engine error: Failed to load instrument, cause: " + e.Message();
122	throw Exception(msg);
123	}
124	catch (::std::runtime_error e) {
125	InstrumentStat = -3;
126	StatusChanged(true);
127	String msg = "sfz::Engine error: Failed to load instrument, cause: ";
128	msg += e.what();
129	throw Exception(msg);
130	}
131	catch (...) {
132	InstrumentStat = -4;
133	StatusChanged(true);
134	throw Exception("sfz::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse sfz file.");
135	}
136
137	// rebuild ActiveKeyGroups map with key groups of current instrument
138	for (std::vector< ::sfz::Region*>::iterator itRegion = newInstrument->regions.begin() ;
139	itRegion != newInstrument->regions.end() ; ++itRegion) {
140	if ((itRegion)->group) ActiveKeyGroups[(itRegion)->group] = NULL;
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	void EngineChannel::PreProcessNoteOn(uint8_t key, uint8_t velocity) {
154	if(pInstrument != NULL && pInstrument->HasKeySwitchBinding(key)) LastKeySwitch = key;
155	PressedKeys[key] = true;
156	}
157
158	void EngineChannel::PostProcessNoteOn(uint8_t key, uint8_t velocity) {
159	LastKey = key;
160	}
161
162	void EngineChannel::PreProcessNoteOff(uint8_t key, uint8_t velocity) {
163	PressedKeys[key] = false;
164	}
165
166	}} // namespace LinuxSampler::sfz