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 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::InstrumentBase>& cmd = ChangeInstrument(NULL);
        if (cmd.pInstrument) {
                InstrumentResourceManager* instrs = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager());
                instrs->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::InstrumentBase>::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::InstrumentBase>& 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 sf2 instrument from instrument manager
        ::sf2::InstrumentBase* 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 (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
        //    if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
        // TODO: ^^^

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

        ChangeInstrument(newInstrument);

        StatusChanged(true);
    }

    void EngineChannel::ProcessKeySwitchChange(int key) { }

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