/[svn]/linuxsampler/trunk/src/engines/gig/InstrumentResourceManager.h
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Contents of /linuxsampler/trunk/src/engines/gig/InstrumentResourceManager.h

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Sun Jan 20 15:04:51 2008 UTC (16 years, 3 months ago) by persson
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* made it possible to load an instrument even if the audio thread
  isn't running

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 - 2008 Christian Schoenebeck *
7 * *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the Free Software *
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21 * MA 02111-1307 USA *
22 ***************************************************************************/
23
24 #ifndef __LS_GIG_INSTRUMENTRESOURCEMANAGER_H__
25 #define __LS_GIG_INSTRUMENTRESOURCEMANAGER_H__
26
27 #include "../../common/global.h"
28
29 #include <gig.h>
30
31 #include "../../common/global.h"
32 #include "../../common/ResourceManager.h"
33 #include "../../drivers/audio/AudioOutputDevice.h"
34 #include "../InstrumentManager.h"
35
36 //namespace libgig = gig;
37
38 namespace LinuxSampler { namespace gig {
39
40 typedef ResourceConsumer< ::gig::Instrument> InstrumentConsumer;
41
42 }} // namespace LinuxSampler::gig
43
44 #include "EngineChannel.h"
45 #include "Engine.h"
46 #include "../../plugins/InstrumentEditor.h"
47
48 namespace LinuxSampler { namespace gig {
49
50 // just symbol prototyping
51 class EngineChannel;
52 class Engine;
53
54 /** @brief Gig instrument manager
55 *
56 * Manager to share gig instruments between multiple Gigasampler
57 * engine channels. The engine channels Borrow() instruments when they
58 * need them and HandBack() when they don't need them anymore. The
59 * InstrumentResourceManager loads the corresponding gig file and gig
60 * instrument if needed, if it's already in use by another engine
61 * channel, then it just returns the same resource, if an gig
62 * instrument / file is not needed anymore, then it will be freed from
63 * memory.
64 */
65 class InstrumentResourceManager : public InstrumentManager, public ResourceManager<InstrumentManager::instrument_id_t, ::gig::Instrument>, public InstrumentEditorListener {
66 public:
67 InstrumentResourceManager() : Gigs(this) {}
68 virtual ~InstrumentResourceManager() {}
69 static void OnInstrumentLoadingProgress(::gig::progress_t* pProgress);
70
71 // implementation of derived abstract methods from 'InstrumentManager'
72 virtual std::vector<instrument_id_t> Instruments();
73 virtual InstrumentManager::mode_t GetMode(const instrument_id_t& ID);
74 virtual void SetMode(const instrument_id_t& ID, InstrumentManager::mode_t Mode);
75 virtual String GetInstrumentName(instrument_id_t ID);
76 virtual String GetInstrumentDataStructureName(instrument_id_t ID);
77 virtual String GetInstrumentDataStructureVersion(instrument_id_t ID);
78 virtual void LaunchInstrumentEditor(instrument_id_t ID) throw (InstrumentManagerException);
79 virtual std::vector<instrument_id_t> GetInstrumentFileContent(String File) throw (InstrumentManagerException);
80 virtual instrument_info_t GetInstrumentInfo(instrument_id_t ID) throw (InstrumentManagerException);
81
82 // implementation of derived abstract methods from 'InstrumentEditorListener'
83 virtual void OnInstrumentEditorQuit(InstrumentEditor* pSender);
84 virtual void OnSamplesToBeRemoved(std::set<void*> Samples, InstrumentEditor* pSender);
85 virtual void OnSamplesRemoved(InstrumentEditor* pSender);
86 virtual void OnDataStructureToBeChanged(void* pStruct, String sStructType, InstrumentEditor* pSender);
87 virtual void OnDataStructureChanged(void* pStruct, String sStructType, InstrumentEditor* pSender);
88 virtual void OnSampleReferenceChanged(void* pOldSample, void* pNewSample, InstrumentEditor* pSender);
89
90 void HandBackInstrument(::gig::Instrument* pResource, InstrumentConsumer* pConsumer,
91 RTList< ::gig::DimensionRegion*>* pDimRegionsInUse);
92 void HandBackDimReg(::gig::DimensionRegion* pDimReg);
93
94 protected:
95 // implementation of derived abstract methods from 'ResourceManager'
96 virtual ::gig::Instrument* Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg);
97 virtual void Destroy(::gig::Instrument* pResource, void* pArg);
98 virtual void OnBorrow(::gig::Instrument* pResource, InstrumentConsumer* pConsumer, void*& pArg);
99 private:
100 typedef ResourceConsumer< ::gig::File> GigConsumer;
101
102 class GigResourceManager : public ResourceManager<String, ::gig::File> {
103 protected:
104 // implementation of derived abstract methods from 'ResourceManager'
105 virtual ::gig::File* Create(String Key, GigConsumer* pConsumer, void*& pArg);
106 virtual void Destroy(::gig::File* pResource, void* pArg);
107 virtual void OnBorrow(::gig::File* pResource, GigConsumer* pConsumer, void*& pArg) {} // ignore
108 public:
109 GigResourceManager(InstrumentResourceManager* parent) : parent(parent) {}
110 virtual ~GigResourceManager() {}
111 private:
112 InstrumentResourceManager* parent;
113 } Gigs;
114
115 void CacheInitialSamples(::gig::Sample* pSample, gig::EngineChannel* pEngineChannel);
116 void CacheInitialSamples(::gig::Sample* pSample, gig::Engine* pEngine);
117 void UncacheInitialSamples(::gig::Sample* pSample);
118 std::vector< ::gig::Instrument*> GetInstrumentsCurrentlyUsedOf(::gig::File* pFile, bool bLock);
119 std::set<gig::Engine*> GetEnginesUsing(::gig::Instrument* pFile, bool bLock);
120 std::set<gig::Engine*> GetEnginesUsing(::gig::File* pFile, bool bLock);
121 bool SampleReferencedByInstrument(::gig::Sample* pSample, ::gig::Instrument* pInstrument);
122 void SuspendEnginesUsing(::gig::Instrument* pInstrument);
123 void SuspendEnginesUsing(::gig::File* pFile);
124 void ResumeAllEngines();
125
126 struct dimreg_info_t {
127 int refCount;
128 ::gig::File* file;
129 ::RIFF::File* riff;
130 };
131 Mutex DimRegInfoMutex; ///< protects the DimRegInfo and SampleRefCount maps from concurrent access by the instrument loader and disk threads
132 std::map< ::gig::DimensionRegion*, dimreg_info_t> DimRegInfo; ///< contains dimension regions that are still in use but belong to released instrument
133 std::map< ::gig::Sample*, int> SampleRefCount; ///< contains samples that are still in use but belong to a released instrument
134
135 Mutex InstrumentEditorProxiesMutex; ///< protects the 'InstrumentEditorProxies' map
136 std::map<InstrumentEditor*, InstrumentConsumer*> InstrumentEditorProxies; ///< here we store the objects that react on instrument specific notifications on behalf of the respective instrument editor
137 std::set<Engine*> suspendedEngines; ///< all engines currently completely suspended
138 Mutex suspendedEnginesMutex; ///< protects 'suspendedEngines' set
139 };
140
141 }} // namespace LinuxSampler::gig
142
143 #endif // __LS_GIG_INSTRUMENTRESOURCEMANAGER_H__

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