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#include <iostream> |
#include <iostream> |
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namespace gig { namespace { |
namespace gig { |
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// *************** progress_t *************** |
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// * |
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progress_t::progress_t() { |
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callback = NULL; |
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__range_min = 0.0f; |
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__range_max = 1.0f; |
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} |
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// private helper function to convert progress of a subprocess into the global progress |
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static void __notify_progress(progress_t* pProgress, float subprogress) { |
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if (pProgress && pProgress->callback) { |
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const float totalrange = pProgress->__range_max - pProgress->__range_min; |
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const float totalprogress = pProgress->__range_min + subprogress * totalrange; |
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pProgress->callback(totalprogress); // now actually notify about the progress |
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} |
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} |
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// private helper function to divide a progress into subprogresses |
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static void __divide_progress(progress_t* pParentProgress, progress_t* pSubProgress, float totalTasks, float currentTask) { |
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if (pParentProgress && pParentProgress->callback) { |
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const float totalrange = pParentProgress->__range_max - pParentProgress->__range_min; |
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pSubProgress->callback = pParentProgress->callback; |
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pSubProgress->__range_min = pParentProgress->__range_min + totalrange * currentTask / totalTasks; |
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pSubProgress->__range_max = pSubProgress->__range_min + totalrange / totalTasks; |
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} |
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} |
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// *************** Internal functions for sample decopmression *************** |
// *************** Internal functions for sample decopmression *************** |
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// * |
// * |
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namespace { |
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inline int get12lo(const unsigned char* pSrc) |
inline int get12lo(const unsigned char* pSrc) |
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{ |
{ |
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const int x = pSrc[0] | (pSrc[1] & 0x0f) << 8; |
const int x = pSrc[0] | (pSrc[1] & 0x0f) << 8; |
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else return static_cast<gig::Sample*>(pSample = GetSampleFromWavePool(WavePoolTableIndex)); |
else return static_cast<gig::Sample*>(pSample = GetSampleFromWavePool(WavePoolTableIndex)); |
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} |
} |
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Sample* Region::GetSampleFromWavePool(unsigned int WavePoolTableIndex) { |
Sample* Region::GetSampleFromWavePool(unsigned int WavePoolTableIndex, progress_t* pProgress) { |
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if ((int32_t)WavePoolTableIndex == -1) return NULL; |
if ((int32_t)WavePoolTableIndex == -1) return NULL; |
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File* file = (File*) GetParent()->GetParent(); |
File* file = (File*) GetParent()->GetParent(); |
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unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
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Sample* sample = file->GetFirstSample(); |
Sample* sample = file->GetFirstSample(pProgress); |
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while (sample) { |
while (sample) { |
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if (sample->ulWavePoolOffset == soughtoffset) return static_cast<gig::Sample*>(pSample = sample); |
if (sample->ulWavePoolOffset == soughtoffset) return static_cast<gig::Sample*>(pSample = sample); |
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sample = file->GetNextSample(); |
sample = file->GetNextSample(); |
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// *************** Instrument *************** |
// *************** Instrument *************** |
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// * |
// * |
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Instrument::Instrument(File* pFile, RIFF::List* insList) : DLS::Instrument((DLS::File*)pFile, insList) { |
Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) { |
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// Initialization |
// Initialization |
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for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
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RegionIndex = -1; |
RegionIndex = -1; |
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unsigned int iRegion = 0; |
unsigned int iRegion = 0; |
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while (rgn) { |
while (rgn) { |
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if (rgn->GetListType() == LIST_TYPE_RGN) { |
if (rgn->GetListType() == LIST_TYPE_RGN) { |
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__notify_progress(pProgress, (float) iRegion / (float) Regions); |
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pRegions[iRegion] = new Region(this, rgn); |
pRegions[iRegion] = new Region(this, rgn); |
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iRegion++; |
iRegion++; |
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} |
} |
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RegionKeyTable[iKey] = pRegions[iReg]; |
RegionKeyTable[iKey] = pRegions[iReg]; |
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} |
} |
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} |
} |
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__notify_progress(pProgress, 1.0f); // notify done |
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} |
} |
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Instrument::~Instrument() { |
Instrument::~Instrument() { |
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} |
} |
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} |
} |
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Sample* File::GetFirstSample() { |
Sample* File::GetFirstSample(progress_t* pProgress) { |
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if (!pSamples) LoadSamples(); |
if (!pSamples) LoadSamples(pProgress); |
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if (!pSamples) return NULL; |
if (!pSamples) return NULL; |
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SamplesIterator = pSamples->begin(); |
SamplesIterator = pSamples->begin(); |
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return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
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return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
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} |
} |
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void File::LoadSamples() { |
void File::LoadSamples(progress_t* pProgress) { |
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RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); |
RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); |
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if (wvpl) { |
if (wvpl) { |
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// just for progress calculation |
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int iSampleIndex = 0; |
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int iTotalSamples = wvpl->CountSubLists(LIST_TYPE_WAVE); |
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unsigned long wvplFileOffset = wvpl->GetFilePos(); |
unsigned long wvplFileOffset = wvpl->GetFilePos(); |
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RIFF::List* wave = wvpl->GetFirstSubList(); |
RIFF::List* wave = wvpl->GetFirstSubList(); |
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while (wave) { |
while (wave) { |
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if (wave->GetListType() == LIST_TYPE_WAVE) { |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
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// notify current progress |
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const float subprogress = (float) iSampleIndex / (float) iTotalSamples; |
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__notify_progress(pProgress, subprogress); |
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if (!pSamples) pSamples = new SampleList; |
if (!pSamples) pSamples = new SampleList; |
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unsigned long waveFileOffset = wave->GetFilePos(); |
unsigned long waveFileOffset = wave->GetFilePos(); |
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pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset)); |
pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset)); |
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iSampleIndex++; |
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} |
} |
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wave = wvpl->GetNextSubList(); |
wave = wvpl->GetNextSubList(); |
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} |
} |
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__notify_progress(pProgress, 1.0); // notify done |
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} |
} |
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else throw gig::Exception("Mandatory <wvpl> chunk not found."); |
else throw gig::Exception("Mandatory <wvpl> chunk not found."); |
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} |
} |
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/** |
/** |
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* Returns the instrument with the given index. |
* Returns the instrument with the given index. |
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* |
* |
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* @param index - number of the sought instrument (0..n) |
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* @param pProgress - optional: callback function for progress notification |
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* @returns sought instrument or NULL if there's no such instrument |
* @returns sought instrument or NULL if there's no such instrument |
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*/ |
*/ |
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Instrument* File::GetInstrument(uint index) { |
Instrument* File::GetInstrument(uint index, progress_t* pProgress) { |
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if (!pInstruments) LoadInstruments(); |
if (!pInstruments) { |
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// TODO: hack - we simply load ALL samples here, it would have been done in the Region constructor anyway (ATM) |
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// sample loading subtask |
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progress_t subprogress; |
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__divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask |
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__notify_progress(&subprogress, 0.0f); |
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GetFirstSample(&subprogress); // now force all samples to be loaded |
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__notify_progress(&subprogress, 1.0f); |
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// instrument loading subtask |
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if (pProgress && pProgress->callback) { |
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subprogress.__range_min = subprogress.__range_max; |
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subprogress.__range_max = pProgress->__range_max; // schedule remaining percentage for this subtask |
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} |
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__notify_progress(&subprogress, 0.0f); |
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LoadInstruments(&subprogress); |
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__notify_progress(&subprogress, 1.0f); |
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} |
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if (!pInstruments) return NULL; |
if (!pInstruments) return NULL; |
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InstrumentsIterator = pInstruments->begin(); |
InstrumentsIterator = pInstruments->begin(); |
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for (uint i = 0; InstrumentsIterator != pInstruments->end(); i++) { |
for (uint i = 0; InstrumentsIterator != pInstruments->end(); i++) { |
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return NULL; |
return NULL; |
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} |
} |
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void File::LoadInstruments() { |
void File::LoadInstruments(progress_t* pProgress) { |
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RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); |
RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); |
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if (lstInstruments) { |
if (lstInstruments) { |
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int iInstrumentIndex = 0; |
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RIFF::List* lstInstr = lstInstruments->GetFirstSubList(); |
RIFF::List* lstInstr = lstInstruments->GetFirstSubList(); |
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while (lstInstr) { |
while (lstInstr) { |
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if (lstInstr->GetListType() == LIST_TYPE_INS) { |
if (lstInstr->GetListType() == LIST_TYPE_INS) { |
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// notify current progress |
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const float localProgress = (float) iInstrumentIndex / (float) Instruments; |
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__notify_progress(pProgress, localProgress); |
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// divide local progress into subprogress for loading current Instrument |
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progress_t subprogress; |
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__divide_progress(pProgress, &subprogress, Instruments, iInstrumentIndex); |
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if (!pInstruments) pInstruments = new InstrumentList; |
if (!pInstruments) pInstruments = new InstrumentList; |
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pInstruments->push_back(new Instrument(this, lstInstr)); |
pInstruments->push_back(new Instrument(this, lstInstr, &subprogress)); |
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iInstrumentIndex++; |
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} |
} |
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lstInstr = lstInstruments->GetNextSubList(); |
lstInstr = lstInstruments->GetNextSubList(); |
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} |
} |
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__notify_progress(pProgress, 1.0); // notify done |
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} |
} |
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else throw gig::Exception("Mandatory <lins> list chunk not found."); |
else throw gig::Exception("Mandatory <lins> list chunk not found."); |
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} |
} |