engines/sf2/InstrumentResourceManager.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2011 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;

        // (try to resolve the audio device context)
        EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
        AudioOutputDevice* pDevice = 
            (pEngineChannel) ? dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice : NULL;
        
        // and we save this to check if we need to reallocate for a engine with higher value of 'MaxSamplesPerSecond'
        pEntry->MaxSamplesPerCycle =
            (pDevice) ? pDevice->MaxSamplesPerCycle() : DefaultMaxSamplesPerCycle();

        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;
        
        // (try to resolve the audio device context)
        EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
        AudioOutputDevice* pDevice = 
            (pEngineChannel) ? dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice : NULL;

        uint maxSamplesPerCycle =
            (pDevice) ? pDevice->MaxSamplesPerCycle() : DefaultMaxSamplesPerCycle();

        if (pEntry->MaxSamplesPerCycle < maxSamplesPerCycle) {
            dmsg(1,("Completely reloading instrument due to insufficient precached samples ...\n"));
            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	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	* Copyright (C) 2005 - 2011 Christian Schoenebeck *
7	* Copyright (C) 2009 - 2011 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 <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	::sf2::Preset* pInstrument = Resource(ID, false);
58	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	::sf2::Preset* pInstrument = Resource(ID, false);
93	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	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	} else {
127	SetKeyBindings(info.KeyBindings, low, high, ::sf2::NONE);
128	}
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	::sf2::Preset* InstrumentResourceManager::Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg) {
150	// get sfz file from internal sfz file manager
151	::sf2::File* pSf2 = Sf2s.Borrow(Key.FileName, reinterpret_cast<Sf2Consumer*>(Key.Index)); // conversion kinda hackish :/
152
153	dmsg(1,("Loading sf2 instrument ('%s',%d)...",Key.FileName.c_str(),Key.Index));
154	::sf2::Preset* pInstrument = GetSfInstrument(pSf2, Key.Index);
155	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	// (try to resolve the audio device context)
185	EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
186	AudioOutputDevice* pDevice =
187	(pEngineChannel) ? dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice : NULL;
188
189	// and we save this to check if we need to reallocate for a engine with higher value of 'MaxSamplesPerSecond'
190	pEntry->MaxSamplesPerCycle =
191	(pDevice) ? pDevice->MaxSamplesPerCycle() : DefaultMaxSamplesPerCycle();
192
193	pArg = pEntry;
194
195	return pInstrument;
196	}
197
198	void InstrumentResourceManager::Destroy( ::sf2::Preset* pResource, void* pArg) {
199	instr_entry_t* pEntry = (instr_entry_t*) pArg;
200	// we don't need the .sf2 file here anymore
201	Sf2s.HandBack(pEntry->pSf2, reinterpret_cast<Sf2Consumer*>(pEntry->ID.Index)); // conversion kinda hackish :/
202	delete pEntry;
203	}
204
205	void InstrumentResourceManager::OnBorrow(::sf2::Preset* pResource, InstrumentConsumer* pConsumer, void*& pArg) {
206	instr_entry_t* pEntry = (instr_entry_t*) pArg;
207
208	// (try to resolve the audio device context)
209	EngineChannel* pEngineChannel = dynamic_cast<EngineChannel*>(pConsumer);
210	AudioOutputDevice* pDevice =
211	(pEngineChannel) ? dynamic_cast<Engine*>(pEngineChannel->GetEngine())->pAudioOutputDevice : NULL;
212
213	uint maxSamplesPerCycle =
214	(pDevice) ? pDevice->MaxSamplesPerCycle() : DefaultMaxSamplesPerCycle();
215
216	if (pEntry->MaxSamplesPerCycle < maxSamplesPerCycle) {
217	dmsg(1,("Completely reloading instrument due to insufficient precached samples ...\n"));
218	Update(pResource, pConsumer);
219	}
220	}
221
222	void InstrumentResourceManager::DeleteRegionIfNotUsed(::sf2::Region* pRegion, region_info_t* pRegInfo) {
223	// TODO: we could delete Region and Instrument here if they have become unused
224	}
225
226	void InstrumentResourceManager::DeleteSampleIfNotUsed(::sf2::Sample* pSample, region_info_t* pRegInfo) {
227	::sf2::File* sf2 = pRegInfo->file;
228	::RIFF::File* riff = static_cast< ::RIFF::File*>(pRegInfo->pArg);
229	if (sf2) {
230	sf2->DeleteSample(pSample);
231	if (!sf2->HasSamples()) {
232	dmsg(2,("No more samples in use - freeing sf2\n"));
233	delete sf2;
234	delete riff;
235	}
236	}
237	}
238
239
240
241	// internal sfz file manager
242
243	::sf2::File* InstrumentResourceManager::Sf2ResourceManager::Create(String Key, Sf2Consumer* pConsumer, void*& pArg) {
244	dmsg(1,("Loading sf2 file \'%s\'...", Key.c_str()));
245	::RIFF::File* pRIFF = new ::RIFF::File(Key);
246	::sf2::File* pSf2 = new ::sf2::File(pRIFF);
247	pArg = pRIFF;
248	dmsg(1,("OK\n"));
249	return pSf2;
250	}
251
252	void InstrumentResourceManager::Sf2ResourceManager::Destroy(::sf2::File* pResource, void* pArg) {
253	dmsg(1,("Freeing sf2 file from memory..."));
254
255	// Delete as much as possible of the sf2 file. Some of the
256	// regions and samples may still be in use - these
257	// will be deleted later by the HandBackRegion function.
258	bool deleteFile = true;
259
260	for (int i = pResource->GetInstrumentCount() - 1; i >= 0; i--) {
261	::sf2::Instrument* pInstr = pResource->GetInstrument(i);
262	bool deleteInstrument = true;
263
264	for (int j = pInstr->GetRegionCount() - 1; j >= 0 ; j--) {
265	::sf2::Region* pRegion = pInstr->GetRegion(j);
266	std::map< ::sf2::Region*, region_info_t>::iterator iter = parent->RegionInfo.find(pRegion);
267	if (iter != parent->RegionInfo.end()) {
268	region_info_t& regInfo = (*iter).second;
269	regInfo.file = pResource;
270	deleteFile = deleteInstrument = false;
271	} else {
272	pInstr->DeleteRegion(pRegion);
273	}
274	}
275
276	if (deleteInstrument) pResource->DeleteInstrument(pInstr);
277	}
278
279	if (deleteFile) {
280	delete pResource;
281	delete (::RIFF::File*) pArg;
282	} else {
283	dmsg(2,("keeping some samples that are in use..."));
284	for (int i = pResource->GetSampleCount() - 1; i >= 0; i--) {
285	::sf2::Sample* sample = pResource->GetSample(i);
286	if (parent->SampleRefCount.find(sample) == parent->SampleRefCount.end()) {
287	pResource->DeleteSample(sample);
288	}
289	}
290	}
291
292	dmsg(1,("OK\n"));
293	}
294
295	int InstrumentResourceManager::GetSfInstrumentCount(::sf2::File* pFile) {
296	return pFile->GetPresetCount();
297	}
298
299	::sf2::Preset* InstrumentResourceManager::GetSfInstrument(::sf2::File* pFile, int idx) {
300	if (idx >= pFile->GetPresetCount()) {
301	throw InstrumentManagerException("There is no instrument with index " + ToString(idx));
302	}
303	return pFile->GetPreset(idx);
304	}
305
306	}} // namespace LinuxSampler::sfz