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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#ifndef __LS_GIG_INSTRUMENTRESOURCEMANAGER_H__ |
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#define __LS_GIG_INSTRUMENTRESOURCEMANAGER_H__ |
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|
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#include "../../common/global.h" |
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|
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#if DEBUG_HEADERS |
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# warning InstrumentResourceManager.h included |
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#endif // DEBUG_HEADERS |
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|
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#include "../../common/global.h" |
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#include "../../common/LinuxSamplerException.h" |
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#include "../../common/ResourceManager.h" |
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#include "../../drivers/audio/AudioOutputDevice.h" |
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#include "../../lib/fileloader/libgig/gig.h" |
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|
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// preload 64k samples = 128kB of data in RAM for 16 bit mono samples |
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#define NUM_RAM_PRELOAD_SAMPLES 32768 |
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|
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//namespace libgig = gig; |
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|
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namespace LinuxSampler { namespace gig { |
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|
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typedef ResourceConsumer< ::gig::Instrument> InstrumentConsumer; |
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|
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}} // namespace LinuxSampler::gig |
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|
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#include "Engine.h" |
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|
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namespace LinuxSampler { namespace gig { |
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|
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// just symbol prototyping |
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class Engine; |
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|
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/** |
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* Explicitly identifies a Gigasampler instrument. |
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*/ |
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struct instrument_id_t { |
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String FileName; ///< name of the file which contains the instrument |
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uint iInstrument; ///< index of the instrument in the instrument file |
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|
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// TODO: we should extend operator<() so it will be able to detect that file x and file y are actually the same files, e.g. because one of them is a symlink / share the same inode |
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bool operator<(const instrument_id_t& o) const { |
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return (iInstrument < o.iInstrument || (iInstrument == o.iInstrument && FileName < o.FileName)); |
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} |
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}; |
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|
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/** Gig instrument manager |
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* |
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* Manager to share gig instruments between multiple Gigasampler |
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* engines. The engines Borrow() instruments when they need them and |
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* HandBack() when they don't need them anymore. The |
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* InstrumentResourceManager loads the corresponding gig file and gig |
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* instrument if needed, if it's already in use by another engine, then |
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* it just returns the same resource, if an gig instrument / file is not |
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* in use by any engine anymore, then it will be freed from memory. |
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*/ |
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class InstrumentResourceManager : public ResourceManager<instrument_id_t, ::gig::Instrument> { |
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public: |
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virtual ~InstrumentResourceManager() {} |
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protected: |
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virtual ::gig::Instrument* Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg); |
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virtual void Destroy(::gig::Instrument* pResource, void* pArg); |
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virtual void OnBorrow(::gig::Instrument* pResource, InstrumentConsumer* pConsumer, void*& pArg); |
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private: |
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struct instr_entry_t { |
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::gig::File* pGig; |
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uint iInstrument; |
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uint MaxSamplesPerCycle; ///< if some engine requests an already allocated instrument with a higher value, we have to reallocate the instrument |
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}; |
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|
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typedef ResourceConsumer< ::gig::File> GigConsumer; |
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|
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class GigResourceManager : public ResourceManager<String, ::gig::File> { |
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protected: |
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virtual ::gig::File* Create(String Key, GigConsumer* pConsumer, void*& pArg); |
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virtual void Destroy(::gig::File* pResource, void* pArg); |
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virtual void OnBorrow(::gig::File* pResource, GigConsumer* pConsumer, void*& pArg) {} // ignore |
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public: |
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virtual ~GigResourceManager() {} |
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} Gigs; |
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|
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void CacheInitialSamples(::gig::Sample* pSample, gig::Engine* pEngine); |
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}; |
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|
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/** |
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* Will be thrown by the InstrumentResourceManager on errors. |
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*/ |
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class InstrumentResourceManagerException : public LinuxSamplerException { |
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public: |
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InstrumentResourceManagerException(String msg) : LinuxSamplerException(msg) {} |
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}; |
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|
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}} // namespace LinuxSampler::gig |
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#endif // __LS_GIG_INSTRUMENTRESOURCEMANAGER_H__ |
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