engines/sf2/InstrumentResourceManager.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 - 2011 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 <sstream>

#include "InstrumentResourceManager.h"
#include "EngineChannel.h"
#include "Engine.h"

#include "../../common/global_private.h"
#include "../../common/Path.h"
#include "../../plugins/InstrumentEditorFactory.h"


namespace LinuxSampler { namespace sf2 {

    // data stored as long as an instrument resource exists
    struct instr_entry_t {
        InstrumentManager::instrument_id_t ID;
        ::sf2::File*                       pSf2;
        uint                               MaxSamplesPerCycle; ///< if some engine requests an already allocated instrument with a higher value, we have to reallocate the instrument
    };

    // some data needed for the libgig callback function
    struct progress_callback_arg_t {
        InstrumentResourceManager*          pManager;
        InstrumentManager::instrument_id_t* pInstrumentKey;
    };

    std::vector<InstrumentResourceManager::instrument_id_t> InstrumentResourceManager::Instruments() {
        return Entries();
    }

    String InstrumentResourceManager::GetInstrumentName(instrument_id_t ID) {
        Lock();
        ::sf2::Preset* pInstrument = Resource(ID, false);
        String res = (pInstrument) ? pInstrument->GetName() : "";
        Unlock();
        return res;
    }

    std::vector<InstrumentResourceManager::instrument_id_t> InstrumentResourceManager::GetInstrumentFileContent(String File) throw (InstrumentManagerException) {
        ::RIFF::File* riff = NULL;
        ::sf2::File*  sf2  = NULL;
        try {
            std::vector<instrument_id_t> result;
            riff = new ::RIFF::File(File);
            sf2  = new ::sf2::File(riff);
            for (int i = 0; i < GetSfInstrumentCount(sf2); i++) {
                instrument_id_t id;
                id.FileName = File;
                id.Index    = i;
                result.push_back(id);
            }
            if (sf2)  delete sf2;
            if (riff) delete riff;
            return result;
        } catch (::RIFF::Exception e) {
            if (sf2)  delete sf2;
            if (riff) delete riff;
            throw InstrumentManagerException(e.Message);
        } catch (...) {
            if (sf2)  delete sf2;
            if (riff) delete riff;
            throw InstrumentManagerException("Unknown exception while trying to parse '" + File + "'");
        }
    }

    InstrumentResourceManager::instrument_info_t InstrumentResourceManager::GetInstrumentInfo(instrument_id_t ID) throw (InstrumentManagerException) {
        Lock();
        ::sf2::Preset* pInstrument = Resource(ID, false);
        bool loaded = (pInstrument != NULL);
        if (!loaded) Unlock();

        ::RIFF::File* riff = NULL;
        ::sf2::File*  sf2  = NULL;
        try {
            if(!loaded) {
                riff = new ::RIFF::File(ID.FileName);
                sf2 = new ::sf2::File(riff);
                pInstrument = GetSfInstrument(sf2, ID.Index);
            }

            instrument_info_t info;
            for (int i = 0; i < 128; i++) { info.KeyBindings[i] = info.KeySwitchBindings[i] = 0; }

            ::sf2::File* pFile = pInstrument->GetFile();

            info.FormatVersion = ToString(pFile->pInfo->pVer->Major);
            info.Product = pFile->pInfo->Product;
            info.Artists = pFile->pInfo->Engineers;

            info.InstrumentName = pInstrument->Name;

            for (int i = 0; i < pInstrument->GetRegionCount(); i++) {
                int low = pInstrument->GetRegion(i)->loKey;
                int high = pInstrument->GetRegion(i)->hiKey;
                if (low == ::sf2::NONE || high == ::sf2::NONE) {
                    ::sf2::Instrument* layer = pInstrument->GetRegion(i)->pInstrument;
                    for (int j = 0; j < layer->GetRegionCount(); j++) {
                        int lo = layer->GetRegion(j)->loKey;
                        int hi = layer->GetRegion(j)->hiKey;
                        SetKeyBindings(info.KeyBindings, lo, hi, ::sf2::NONE);
                    }
                } else {
                    SetKeyBindings(info.KeyBindings, low, high, ::sf2::NONE);
                }
            }

            if (loaded) Unlock();

            if (sf2)  delete sf2;
            if (riff) delete riff;
            return info;
        } catch (::sf2::Exception e) {
            if (loaded) Unlock();
            if (sf2)  delete sf2;
            if (riff) delete riff;
            throw InstrumentManagerException(e.Message);
        } catch (...) {
            if (loaded) Unlock();
            if (sf2)  delete sf2;
            if (riff) delete riff;
            throw InstrumentManagerException("Unknown exception while trying to parse '" + ID.FileName + "'");
        }
    }

    ::sf2::Preset* InstrumentResourceManager::Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg) {
        // get sfz file from internal sfz file manager
        ::sf2::File* pSf2 = Sf2s.Borrow(Key.FileName, reinterpret_cast<Sf2Consumer*>(Key.Index)); // conversion kinda hackish :/

        dmsg(1,("Loading sf2 instrument ('%s',%d)...",Key.FileName.c_str(),Key.Index));
        ::sf2::Preset* pInstrument = GetSfInstrument(pSf2, Key.Index);
        dmsg(1,("OK\n"));

        // cache initial samples points (for actually needed samples)
        dmsg(1,("Caching initial samples..."));
        float regTotal = 0, regCurrent = 0;
        for(int i = 0 ; i < pInstrument->GetRegionCount(); i++) {
            ::sf2::Instrument* sf2Instr = pInstrument->GetRegion(i)->pInstrument;
            if(sf2Instr) regTotal += sf2Instr->GetRegionCount();
        }
        for(int i = 0 ; i < pInstrument->GetRegionCount(); i++) {
            ::sf2::Instrument* sf2Instr = pInstrument->GetRegion(i)->pInstrument;
            if(sf2Instr != NULL) {
                // pInstrument is ::sf2::Preset
                for(int j = 0; j < sf2Instr->GetRegionCount(); j++) {
                    const float localProgress = regCurrent++ / regTotal;
                    DispatchResourceProgressEvent(Key, localProgress);
                    CacheInitialSamples(sf2Instr->GetRegion(j)->GetSample(), dynamic_cast<AbstractEngineChannel*>(pConsumer));
                }
            }
        }
        dmsg(1,("OK\n"));
        DispatchResourceProgressEvent(Key, 1.0f); // done; notify all consumers about progress 100%

        // we need the following for destruction later
        instr_entry_t* pEntry = new instr_entry_t;
        pEntry->ID.FileName   = Key.FileName;
        pEntry->ID.Index      = Key.Index;
        pEntry->pSf2          = pSf2;

        EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
        // and we save this to check if we need to reallocate for a engine with higher value of 'MaxSamplesPerSecond'
        pEntry->MaxSamplesPerCycle =
            (!pEngineChannel) ? 0 /* don't care for instrument editors */ :
                (pEngineChannel->GetEngine()) ?
                    dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice->MaxSamplesPerCycle()
                    : GIG_RESOURCE_MANAGER_DEFAULT_MAX_SAMPLES_PER_CYCLE;
        pArg = pEntry;

        return pInstrument;
    }

    void InstrumentResourceManager::Destroy( ::sf2::Preset* pResource, void* pArg) {
        instr_entry_t* pEntry = (instr_entry_t*) pArg;
        // we don't need the .sf2 file here anymore
        Sf2s.HandBack(pEntry->pSf2, reinterpret_cast<Sf2Consumer*>(pEntry->ID.Index)); // conversion kinda hackish :/
        delete pEntry;
    }

    void InstrumentResourceManager::OnBorrow(::sf2::Preset* pResource, InstrumentConsumer* pConsumer, void*& pArg) {
        instr_entry_t* pEntry = (instr_entry_t*) pArg;
        EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
        uint maxSamplesPerCycle =
            (pEngineChannel && pEngineChannel->GetEngine()) ? dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice->MaxSamplesPerCycle()
                                          : GIG_RESOURCE_MANAGER_DEFAULT_MAX_SAMPLES_PER_CYCLE;
        if (pEntry->MaxSamplesPerCycle < maxSamplesPerCycle) {
            Update(pResource, pConsumer);
        }
    }

    void InstrumentResourceManager::DeleteRegionIfNotUsed(::sf2::Region* pRegion, region_info_t* pRegInfo) {
        // TODO: we could delete Region and Instrument here if they have become unused
    }

    void InstrumentResourceManager::DeleteSampleIfNotUsed(::sf2::Sample* pSample, region_info_t* pRegInfo) {
        ::sf2::File*  sf2 = pRegInfo->file;
        ::RIFF::File* riff = static_cast< ::RIFF::File*>(pRegInfo->pArg);
        if (sf2) {
            sf2->DeleteSample(pSample);
            if (!sf2->HasSamples()) {
                dmsg(2,("No more samples in use - freeing sf2\n"));
                delete sf2;
                delete riff;
            }
        }
    }


    // internal sfz file manager

    ::sf2::File* InstrumentResourceManager::Sf2ResourceManager::Create(String Key, Sf2Consumer* pConsumer, void*& pArg) {
        dmsg(1,("Loading sf2 file \'%s\'...", Key.c_str()));
        ::RIFF::File* pRIFF = new ::RIFF::File(Key);
        ::sf2::File* pSf2   = new ::sf2::File(pRIFF);
        pArg                = pRIFF;
        dmsg(1,("OK\n"));
        return pSf2;
    }

    void InstrumentResourceManager::Sf2ResourceManager::Destroy(::sf2::File* pResource, void* pArg) {
        dmsg(1,("Freeing sf2 file from memory..."));

        // Delete as much as possible of the sf2 file. Some of the
        // regions and samples may still be in use - these
        // will be deleted later by the HandBackRegion function.
        bool deleteFile = true;

        for (int i = pResource->GetInstrumentCount() - 1; i >= 0; i--) {
            ::sf2::Instrument* pInstr = pResource->GetInstrument(i);
            bool deleteInstrument = true;

            for (int j = pInstr->GetRegionCount() - 1; j >= 0 ; j--) {
                ::sf2::Region* pRegion = pInstr->GetRegion(j);
                std::map< ::sf2::Region*, region_info_t>::iterator iter = parent->RegionInfo.find(pRegion);
                if (iter != parent->RegionInfo.end()) {
                    region_info_t& regInfo = (*iter).second;
                    regInfo.file = pResource;
                    deleteFile = deleteInstrument = false;
                } else {
                    pInstr->DeleteRegion(pRegion);
                }
            }

            if (deleteInstrument) pResource->DeleteInstrument(pInstr);
        }

        if (deleteFile) {
            delete pResource;
            delete (::RIFF::File*) pArg;
        } else {
            dmsg(2,("keeping some samples that are in use..."));
            for (int i = pResource->GetSampleCount() - 1; i >= 0; i--) {
                ::sf2::Sample* sample = pResource->GetSample(i);
                if (parent->SampleRefCount.find(sample) == parent->SampleRefCount.end()) {
                    pResource->DeleteSample(sample);
                }
            }
        }

        dmsg(1,("OK\n"));
    }

    int InstrumentResourceManager::GetSfInstrumentCount(::sf2::File* pFile) {
        return pFile->GetPresetCount();
    }

    ::sf2::Preset* InstrumentResourceManager::GetSfInstrument(::sf2::File* pFile, int idx) {
        if (idx >= pFile->GetPresetCount()) {
            throw InstrumentManagerException("There is no instrument with index " + ToString(idx));
        }
        return pFile->GetPreset(idx);
    }

}} // 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	2185	* Copyright (C) 2009 - 2011 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 <sstream>
26
27			#include "InstrumentResourceManager.h"
28			#include "EngineChannel.h"
29			#include "Engine.h"
30
31			#include "../../common/global_private.h"
32			#include "../../common/Path.h"
33			#include "../../plugins/InstrumentEditorFactory.h"
34
35
36			namespace LinuxSampler { namespace sf2 {
37
38			// data stored as long as an instrument resource exists
39			struct instr_entry_t {
40			InstrumentManager::instrument_id_t ID;
41			::sf2::File* pSf2;
42			uint MaxSamplesPerCycle; ///< if some engine requests an already allocated instrument with a higher value, we have to reallocate the instrument
43			};
44
45			// some data needed for the libgig callback function
46			struct progress_callback_arg_t {
47			InstrumentResourceManager* pManager;
48			InstrumentManager::instrument_id_t* pInstrumentKey;
49			};
50
51			std::vector<InstrumentResourceManager::instrument_id_t> InstrumentResourceManager::Instruments() {
52			return Entries();
53			}
54
55			String InstrumentResourceManager::GetInstrumentName(instrument_id_t ID) {
56			Lock();
57	iliev	2027	::sf2::Preset* pInstrument = Resource(ID, false);
58	iliev	2012	String res = (pInstrument) ? pInstrument->GetName() : "";
59			Unlock();
60			return res;
61			}
62
63			std::vector<InstrumentResourceManager::instrument_id_t> InstrumentResourceManager::GetInstrumentFileContent(String File) throw (InstrumentManagerException) {
64			::RIFF::File* riff = NULL;
65			::sf2::File* sf2 = NULL;
66			try {
67			std::vector<instrument_id_t> result;
68			riff = new ::RIFF::File(File);
69			sf2 = new ::sf2::File(riff);
70			for (int i = 0; i < GetSfInstrumentCount(sf2); i++) {
71			instrument_id_t id;
72			id.FileName = File;
73			id.Index = i;
74			result.push_back(id);
75			}
76			if (sf2) delete sf2;
77			if (riff) delete riff;
78			return result;
79			} catch (::RIFF::Exception e) {
80			if (sf2) delete sf2;
81			if (riff) delete riff;
82			throw InstrumentManagerException(e.Message);
83			} catch (...) {
84			if (sf2) delete sf2;
85			if (riff) delete riff;
86			throw InstrumentManagerException("Unknown exception while trying to parse '" + File + "'");
87			}
88			}
89
90			InstrumentResourceManager::instrument_info_t InstrumentResourceManager::GetInstrumentInfo(instrument_id_t ID) throw (InstrumentManagerException) {
91			Lock();
92	iliev	2027	::sf2::Preset* pInstrument = Resource(ID, false);
93	iliev	2012	bool loaded = (pInstrument != NULL);
94			if (!loaded) Unlock();
95
96			::RIFF::File* riff = NULL;
97			::sf2::File* sf2 = NULL;
98			try {
99			if(!loaded) {
100			riff = new ::RIFF::File(ID.FileName);
101			sf2 = new ::sf2::File(riff);
102			pInstrument = GetSfInstrument(sf2, ID.Index);
103			}
104
105			instrument_info_t info;
106			for (int i = 0; i < 128; i++) { info.KeyBindings[i] = info.KeySwitchBindings[i] = 0; }
107
108			::sf2::File* pFile = pInstrument->GetFile();
109
110			info.FormatVersion = ToString(pFile->pInfo->pVer->Major);
111			info.Product = pFile->pInfo->Product;
112			info.Artists = pFile->pInfo->Engineers;
113
114			info.InstrumentName = pInstrument->Name;
115
116			for (int i = 0; i < pInstrument->GetRegionCount(); i++) {
117			int low = pInstrument->GetRegion(i)->loKey;
118			int high = pInstrument->GetRegion(i)->hiKey;
119	iliev	2027	if (low == ::sf2::NONE \|\| high == ::sf2::NONE) {
120			::sf2::Instrument* layer = pInstrument->GetRegion(i)->pInstrument;
121			for (int j = 0; j < layer->GetRegionCount(); j++) {
122			int lo = layer->GetRegion(j)->loKey;
123			int hi = layer->GetRegion(j)->hiKey;
124			SetKeyBindings(info.KeyBindings, lo, hi, ::sf2::NONE);
125			}
126	iliev	2012	} else {
127	iliev	2027	SetKeyBindings(info.KeyBindings, low, high, ::sf2::NONE);
128	iliev	2012	}
129			}
130
131			if (loaded) Unlock();
132
133			if (sf2) delete sf2;
134			if (riff) delete riff;
135			return info;
136			} catch (::sf2::Exception e) {
137			if (loaded) Unlock();
138			if (sf2) delete sf2;
139			if (riff) delete riff;
140			throw InstrumentManagerException(e.Message);
141			} catch (...) {
142			if (loaded) Unlock();
143			if (sf2) delete sf2;
144			if (riff) delete riff;
145			throw InstrumentManagerException("Unknown exception while trying to parse '" + ID.FileName + "'");
146			}
147			}
148
149	iliev	2027	::sf2::Preset* InstrumentResourceManager::Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg) {
150	iliev	2012	// get sfz file from internal sfz file manager
151	persson	2185	::sf2::File* pSf2 = Sf2s.Borrow(Key.FileName, reinterpret_cast<Sf2Consumer*>(Key.Index)); // conversion kinda hackish :/
152	iliev	2012
153			dmsg(1,("Loading sf2 instrument ('%s',%d)...",Key.FileName.c_str(),Key.Index));
154	iliev	2027	::sf2::Preset* pInstrument = GetSfInstrument(pSf2, Key.Index);
155	iliev	2012	dmsg(1,("OK\n"));
156
157			// cache initial samples points (for actually needed samples)
158			dmsg(1,("Caching initial samples..."));
159			float regTotal = 0, regCurrent = 0;
160			for(int i = 0 ; i < pInstrument->GetRegionCount(); i++) {
161			::sf2::Instrument* sf2Instr = pInstrument->GetRegion(i)->pInstrument;
162			if(sf2Instr) regTotal += sf2Instr->GetRegionCount();
163			}
164			for(int i = 0 ; i < pInstrument->GetRegionCount(); i++) {
165			::sf2::Instrument* sf2Instr = pInstrument->GetRegion(i)->pInstrument;
166			if(sf2Instr != NULL) {
167			// pInstrument is ::sf2::Preset
168			for(int j = 0; j < sf2Instr->GetRegionCount(); j++) {
169			const float localProgress = regCurrent++ / regTotal;
170			DispatchResourceProgressEvent(Key, localProgress);
171			CacheInitialSamples(sf2Instr->GetRegion(j)->GetSample(), dynamic_cast<AbstractEngineChannel*>(pConsumer));
172			}
173			}
174			}
175			dmsg(1,("OK\n"));
176			DispatchResourceProgressEvent(Key, 1.0f); // done; notify all consumers about progress 100%
177
178			// we need the following for destruction later
179			instr_entry_t* pEntry = new instr_entry_t;
180			pEntry->ID.FileName = Key.FileName;
181			pEntry->ID.Index = Key.Index;
182			pEntry->pSf2 = pSf2;
183
184			EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
185			// and we save this to check if we need to reallocate for a engine with higher value of 'MaxSamplesPerSecond'
186			pEntry->MaxSamplesPerCycle =
187			(!pEngineChannel) ? 0 /* don't care for instrument editors */ :
188			(pEngineChannel->GetEngine()) ?
189			dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice->MaxSamplesPerCycle()
190			: GIG_RESOURCE_MANAGER_DEFAULT_MAX_SAMPLES_PER_CYCLE;
191			pArg = pEntry;
192
193			return pInstrument;
194			}
195
196	iliev	2027	void InstrumentResourceManager::Destroy( ::sf2::Preset* pResource, void* pArg) {
197	iliev	2012	instr_entry_t* pEntry = (instr_entry_t*) pArg;
198			// we don't need the .sf2 file here anymore
199	persson	2185	Sf2s.HandBack(pEntry->pSf2, reinterpret_cast<Sf2Consumer*>(pEntry->ID.Index)); // conversion kinda hackish :/
200	iliev	2012	delete pEntry;
201			}
202
203	iliev	2027	void InstrumentResourceManager::OnBorrow(::sf2::Preset* pResource, InstrumentConsumer* pConsumer, void*& pArg) {
204	iliev	2012	instr_entry_t* pEntry = (instr_entry_t*) pArg;
205			EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
206			uint maxSamplesPerCycle =
207			(pEngineChannel && pEngineChannel->GetEngine()) ? dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice->MaxSamplesPerCycle()
208			: GIG_RESOURCE_MANAGER_DEFAULT_MAX_SAMPLES_PER_CYCLE;
209			if (pEntry->MaxSamplesPerCycle < maxSamplesPerCycle) {
210			Update(pResource, pConsumer);
211			}
212			}
213
214			void InstrumentResourceManager::DeleteRegionIfNotUsed(::sf2::Region* pRegion, region_info_t* pRegInfo) {
215			// TODO: we could delete Region and Instrument here if they have become unused
216			}
217
218			void InstrumentResourceManager::DeleteSampleIfNotUsed(::sf2::Sample* pSample, region_info_t* pRegInfo) {
219			::sf2::File* sf2 = pRegInfo->file;
220			::RIFF::File* riff = static_cast< ::RIFF::File*>(pRegInfo->pArg);
221			if (sf2) {
222			sf2->DeleteSample(pSample);
223			if (!sf2->HasSamples()) {
224			dmsg(2,("No more samples in use - freeing sf2\n"));
225			delete sf2;
226			delete riff;
227			}
228			}
229			}
230
231
232
233			// internal sfz file manager
234
235			::sf2::File* InstrumentResourceManager::Sf2ResourceManager::Create(String Key, Sf2Consumer* pConsumer, void*& pArg) {
236			dmsg(1,("Loading sf2 file \'%s\'...", Key.c_str()));
237			::RIFF::File* pRIFF = new ::RIFF::File(Key);
238			::sf2::File* pSf2 = new ::sf2::File(pRIFF);
239			pArg = pRIFF;
240			dmsg(1,("OK\n"));
241			return pSf2;
242			}
243
244			void InstrumentResourceManager::Sf2ResourceManager::Destroy(::sf2::File* pResource, void* pArg) {
245			dmsg(1,("Freeing sf2 file from memory..."));
246
247	iliev	2021	// Delete as much as possible of the sf2 file. Some of the
248	iliev	2012	// regions and samples may still be in use - these
249			// will be deleted later by the HandBackRegion function.
250	iliev	2021	bool deleteFile = true;
251	iliev	2012
252	iliev	2021	for (int i = pResource->GetInstrumentCount() - 1; i >= 0; i--) {
253			::sf2::Instrument* pInstr = pResource->GetInstrument(i);
254			bool deleteInstrument = true;
255
256			for (int j = pInstr->GetRegionCount() - 1; j >= 0 ; j--) {
257			::sf2::Region* pRegion = pInstr->GetRegion(j);
258			std::map< ::sf2::Region*, region_info_t>::iterator iter = parent->RegionInfo.find(pRegion);
259			if (iter != parent->RegionInfo.end()) {
260			region_info_t& regInfo = (*iter).second;
261			regInfo.file = pResource;
262			deleteFile = deleteInstrument = false;
263			} else {
264			pInstr->DeleteRegion(pRegion);
265			}
266	iliev	2012	}
267	iliev	2021
268			if (deleteInstrument) pResource->DeleteInstrument(pInstr);
269	iliev	2012	}
270
271	iliev	2021	if (deleteFile) {
272			delete pResource;
273			delete (::RIFF::File*) pArg;
274			} else {
275			dmsg(2,("keeping some samples that are in use..."));
276			for (int i = pResource->GetSampleCount() - 1; i >= 0; i--) {
277			::sf2::Sample* sample = pResource->GetSample(i);
278			if (parent->SampleRefCount.find(sample) == parent->SampleRefCount.end()) {
279			pResource->DeleteSample(sample);
280			}
281			}
282			}
283	iliev	2012
284			dmsg(1,("OK\n"));
285			}
286
287			int InstrumentResourceManager::GetSfInstrumentCount(::sf2::File* pFile) {
288	iliev	2027	return pFile->GetPresetCount();
289	iliev	2012	}
290
291	iliev	2027	::sf2::Preset* InstrumentResourceManager::GetSfInstrument(::sf2::File* pFile, int idx) {
292			if (idx >= pFile->GetPresetCount()) {
293	iliev	2012	throw InstrumentManagerException("There is no instrument with index " + ToString(idx));
294			}
295	iliev	2027	return pFile->GetPreset(idx);
296	iliev	2012	}
297
298			}} // namespace LinuxSampler::sfz