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namespace LinuxSampler { namespace gig { |
namespace LinuxSampler { namespace gig { |
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// some data needed for the libgig callback function |
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struct progress_callback_arg_t { |
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InstrumentResourceManager* pManager; |
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instrument_id_t* pInstrumentKey; |
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}; |
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/** |
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* Callback function which will be called by libgig during loading of |
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* instruments to inform about the current progress. Or to be more |
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* specific; it will be called during the GetInstrument() call. |
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* |
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* @param pProgress - contains current progress value, pointer to the |
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* InstrumentResourceManager instance and |
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* instrument ID |
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*/ |
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void InstrumentResourceManager::OnInstrumentLoadingProgress(::gig::progress_t* pProgress) { |
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dmsg(7,("gig::InstrumentResourceManager: progress %f%", pProgress->factor)); |
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progress_callback_arg_t* pArg = static_cast<progress_callback_arg_t*>(pProgress->custom); |
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// we randomly schedule 90% for the .gig file loading and the remaining 10% later for sample caching |
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const float localProgress = 0.9f * pProgress->factor; |
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pArg->pManager->DispatchResourceProgressEvent(*pArg->pInstrumentKey, localProgress); |
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} |
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::gig::Instrument* InstrumentResourceManager::Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg) { |
::gig::Instrument* InstrumentResourceManager::Create(instrument_id_t Key, InstrumentConsumer* pConsumer, void*& pArg) { |
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// get gig file from inernal gig file manager |
// get gig file from inernal gig file manager |
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::gig::File* pGig = Gigs.Borrow(Key.FileName, (GigConsumer*) Key.iInstrument); // conversion kinda hackish :/ |
::gig::File* pGig = Gigs.Borrow(Key.FileName, (GigConsumer*) Key.iInstrument); // conversion kinda hackish :/ |
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// we pass this to the progress callback mechanism of libgig |
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progress_callback_arg_t callbackArg; |
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callbackArg.pManager = this; |
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callbackArg.pInstrumentKey = &Key; |
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::gig::progress_t progress; |
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progress.callback = OnInstrumentLoadingProgress; |
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progress.custom = &callbackArg; |
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dmsg(1,("Loading gig instrument...")); |
dmsg(1,("Loading gig instrument...")); |
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::gig::Instrument* pInstrument = pGig->GetInstrument(Key.iInstrument); |
::gig::Instrument* pInstrument = pGig->GetInstrument(Key.iInstrument, &progress); |
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if (!pInstrument) { |
if (!pInstrument) { |
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std::stringstream msg; |
std::stringstream msg; |
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msg << "There's no instrument with index " << Key.iInstrument << "."; |
msg << "There's no instrument with index " << Key.iInstrument << "."; |
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// cache initial samples points (for actually needed samples) |
// cache initial samples points (for actually needed samples) |
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dmsg(1,("Caching initial samples...")); |
dmsg(1,("Caching initial samples...")); |
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uint iRegion = 0; // just for progress calculation |
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::gig::Region* pRgn = pInstrument->GetFirstRegion(); |
::gig::Region* pRgn = pInstrument->GetFirstRegion(); |
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while (pRgn) { |
while (pRgn) { |
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// we randomly schedule 90% for the .gig file loading and the remaining 10% now for sample caching |
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const float localProgress = 0.9f + 0.1f * (float) iRegion / (float) pInstrument->Regions; |
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DispatchResourceProgressEvent(Key, localProgress); |
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if (pRgn->GetSample() && !pRgn->GetSample()->GetCache().Size) { |
if (pRgn->GetSample() && !pRgn->GetSample()->GetCache().Size) { |
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dmsg(2,("C")); |
dmsg(2,("C")); |
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CacheInitialSamples(pRgn->GetSample(), dynamic_cast<gig::EngineChannel*>(pConsumer)); |
CacheInitialSamples(pRgn->GetSample(), dynamic_cast<gig::EngineChannel*>(pConsumer)); |
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} |
} |
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pRgn = pInstrument->GetNextRegion(); |
pRgn = pInstrument->GetNextRegion(); |
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iRegion++; |
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} |
} |
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dmsg(1,("OK\n")); |
dmsg(1,("OK\n")); |
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DispatchResourceProgressEvent(Key, 1.0f); // done; notify all consumers about progress 100% |
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// we need the following for destruction later |
// we need the following for destruction later |
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instr_entry_t* pEntry = new instr_entry_t; |
instr_entry_t* pEntry = new instr_entry_t; |