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	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	persson	2101	* Copyright (C) 2009-2010 Grigor Iliev *
8	iliev	2012	* *
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	persson	2101	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	iliev	2012
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	persson	2058	void EngineChannel::PostProcessNoteOn(uint8_t key, uint8_t velocity) {
159			LastKey = key;
160			}
161
162	iliev	2012	void EngineChannel::PreProcessNoteOff(uint8_t key, uint8_t velocity) {
163			PressedKeys[key] = false;
164			}
165
166			}} // namespace LinuxSampler::sfz