2 |
* * |
* * |
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* libgig - C++ cross-platform Gigasampler format file loader library * |
* libgig - C++ cross-platform Gigasampler format file loader library * |
4 |
* * |
* * |
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* Copyright (C) 2003, 2004 by Christian Schoenebeck * |
* Copyright (C) 2003-2005 by Christian Schoenebeck * |
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* <cuse@users.sourceforge.net> * |
* <cuse@users.sourceforge.net> * |
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* * |
* * |
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* This library is free software; you can redistribute it and/or modify * |
* This library 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 * |
* it under the terms of the GNU General Public License as published by * |
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#include "gig.h" |
#include "gig.h" |
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namespace gig { namespace { |
#include <iostream> |
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28 |
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namespace gig { |
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30 |
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// *************** progress_t *************** |
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// * |
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33 |
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progress_t::progress_t() { |
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callback = NULL; |
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custom = NULL; |
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__range_min = 0.0f; |
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__range_max = 1.0f; |
38 |
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} |
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40 |
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// private helper function to convert progress of a subprocess into the global progress |
41 |
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static void __notify_progress(progress_t* pProgress, float subprogress) { |
42 |
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if (pProgress && pProgress->callback) { |
43 |
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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->factor = totalprogress; |
46 |
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pProgress->callback(pProgress); // now actually notify about the progress |
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} |
48 |
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} |
49 |
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50 |
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// private helper function to divide a progress into subprogresses |
51 |
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static void __divide_progress(progress_t* pParentProgress, progress_t* pSubProgress, float totalTasks, float currentTask) { |
52 |
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if (pParentProgress && pParentProgress->callback) { |
53 |
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const float totalrange = pParentProgress->__range_max - pParentProgress->__range_min; |
54 |
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pSubProgress->callback = pParentProgress->callback; |
55 |
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pSubProgress->custom = pParentProgress->custom; |
56 |
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pSubProgress->__range_min = pParentProgress->__range_min + totalrange * currentTask / totalTasks; |
57 |
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pSubProgress->__range_max = pSubProgress->__range_min + totalrange / totalTasks; |
58 |
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} |
59 |
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} |
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// *************** Internal functions for sample decopmression *************** |
// *************** Internal functions for sample decopmression *************** |
63 |
// * |
// * |
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65 |
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namespace { |
66 |
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67 |
inline int get12lo(const unsigned char* pSrc) |
inline int get12lo(const unsigned char* pSrc) |
68 |
{ |
{ |
69 |
const int x = pSrc[0] | (pSrc[1] & 0x0f) << 8; |
const int x = pSrc[0] | (pSrc[1] & 0x0f) << 8; |
128 |
void Decompress24(int compressionmode, const unsigned char* params, |
void Decompress24(int compressionmode, const unsigned char* params, |
129 |
int dstStep, const unsigned char* pSrc, int16_t* pDst, |
int dstStep, const unsigned char* pSrc, int16_t* pDst, |
130 |
unsigned long currentframeoffset, |
unsigned long currentframeoffset, |
131 |
unsigned long copysamples) |
unsigned long copysamples, int truncatedBits) |
132 |
{ |
{ |
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// Note: The 24 bits are truncated to 16 bits for now. |
// Note: The 24 bits are truncated to 16 bits for now. |
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140 |
// |
// |
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// Strange thing #2: The formula in SKIP_ONE gives values for |
// Strange thing #2: The formula in SKIP_ONE gives values for |
142 |
// y that are twice as high as they should be. That's why |
// y that are twice as high as they should be. That's why |
143 |
// COPY_ONE shifts 9 steps instead of 8, and also why y is |
// COPY_ONE shifts an extra step, and also why y is |
144 |
// initialized with a sum instead of a mean value. |
// initialized with a sum instead of a mean value. |
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146 |
int y, dy, ddy; |
int y, dy, ddy; |
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148 |
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const int shift = 8 - truncatedBits; |
149 |
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const int shift1 = shift + 1; |
150 |
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151 |
#define GET_PARAMS(params) \ |
#define GET_PARAMS(params) \ |
152 |
y = (get24(params) + get24((params) + 3)); \ |
y = (get24(params) + get24((params) + 3)); \ |
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dy = get24((params) + 6); \ |
dy = get24((params) + 6); \ |
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161 |
#define COPY_ONE(x) \ |
#define COPY_ONE(x) \ |
162 |
SKIP_ONE(x); \ |
SKIP_ONE(x); \ |
163 |
*pDst = y >> 9; \ |
*pDst = y >> shift1; \ |
164 |
pDst += dstStep |
pDst += dstStep |
165 |
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166 |
switch (compressionmode) { |
switch (compressionmode) { |
167 |
case 2: // 24 bit uncompressed |
case 2: // 24 bit uncompressed |
168 |
pSrc += currentframeoffset * 3; |
pSrc += currentframeoffset * 3; |
169 |
while (copysamples) { |
while (copysamples) { |
170 |
*pDst = get24(pSrc) >> 8; |
*pDst = get24(pSrc) >> shift; |
171 |
pDst += dstStep; |
pDst += dstStep; |
172 |
pSrc += 3; |
pSrc += 3; |
173 |
copysamples--; |
copysamples--; |
240 |
// *************** Sample *************** |
// *************** Sample *************** |
241 |
// * |
// * |
242 |
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|
243 |
unsigned int Sample::Instances = 0; |
unsigned int Sample::Instances = 0; |
244 |
unsigned char* Sample::pDecompressionBuffer = NULL; |
buffer_t Sample::InternalDecompressionBuffer; |
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unsigned long Sample::DecompressionBufferSize = 0; |
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245 |
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246 |
Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) { |
Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) { |
247 |
Instances++; |
Instances++; |
248 |
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FileNo = fileNo; |
249 |
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250 |
RIFF::Chunk* _3gix = waveList->GetSubChunk(CHUNK_ID_3GIX); |
RIFF::Chunk* _3gix = waveList->GetSubChunk(CHUNK_ID_3GIX); |
251 |
if (!_3gix) throw gig::Exception("Mandatory chunks in <wave> list chunk not found."); |
if (!_3gix) throw gig::Exception("Mandatory chunks in <wave> list chunk not found."); |
277 |
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278 |
if (BitDepth > 24) throw gig::Exception("Only samples up to 24 bit supported"); |
if (BitDepth > 24) throw gig::Exception("Only samples up to 24 bit supported"); |
279 |
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280 |
Compressed = (waveList->GetSubChunk(CHUNK_ID_EWAV)); |
RIFF::Chunk* ewav = waveList->GetSubChunk(CHUNK_ID_EWAV); |
281 |
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Compressed = ewav; |
282 |
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Dithered = false; |
283 |
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TruncatedBits = 0; |
284 |
if (Compressed) { |
if (Compressed) { |
285 |
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uint32_t version = ewav->ReadInt32(); |
286 |
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if (version == 3 && BitDepth == 24) { |
287 |
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Dithered = ewav->ReadInt32(); |
288 |
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ewav->SetPos(Channels == 2 ? 84 : 64); |
289 |
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TruncatedBits = ewav->ReadInt32(); |
290 |
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} |
291 |
ScanCompressedSample(); |
ScanCompressedSample(); |
292 |
} |
} |
293 |
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294 |
// we use a buffer for decompression and for truncating 24 bit samples to 16 bit |
// we use a buffer for decompression and for truncating 24 bit samples to 16 bit |
295 |
if ((Compressed || BitDepth == 24) && !pDecompressionBuffer) { |
if ((Compressed || BitDepth == 24) && !InternalDecompressionBuffer.Size) { |
296 |
pDecompressionBuffer = new unsigned char[INITIAL_SAMPLE_BUFFER_SIZE]; |
InternalDecompressionBuffer.pStart = new unsigned char[INITIAL_SAMPLE_BUFFER_SIZE]; |
297 |
DecompressionBufferSize = INITIAL_SAMPLE_BUFFER_SIZE; |
InternalDecompressionBuffer.Size = INITIAL_SAMPLE_BUFFER_SIZE; |
298 |
} |
} |
299 |
FrameOffset = 0; // just for streaming compressed samples |
FrameOffset = 0; // just for streaming compressed samples |
300 |
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301 |
LoopSize = LoopEnd - LoopStart; |
LoopSize = LoopEnd - LoopStart; |
302 |
} |
} |
308 |
std::list<unsigned long> frameOffsets; |
std::list<unsigned long> frameOffsets; |
309 |
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310 |
SamplesPerFrame = BitDepth == 24 ? 256 : 2048; |
SamplesPerFrame = BitDepth == 24 ? 256 : 2048; |
311 |
WorstCaseFrameSize = SamplesPerFrame * FrameSize + Channels; |
WorstCaseFrameSize = SamplesPerFrame * FrameSize + Channels; // +Channels for compression flag |
312 |
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313 |
// Scanning |
// Scanning |
314 |
pCkData->SetPos(0); |
pCkData->SetPos(0); |
389 |
* that will be returned to determine the actual cached samples, but note |
* that will be returned to determine the actual cached samples, but note |
390 |
* that the size is given in bytes! You get the number of actually cached |
* that the size is given in bytes! You get the number of actually cached |
391 |
* samples by dividing it by the frame size of the sample: |
* samples by dividing it by the frame size of the sample: |
392 |
* |
* @code |
393 |
* buffer_t buf = pSample->LoadSampleData(acquired_samples); |
* buffer_t buf = pSample->LoadSampleData(acquired_samples); |
394 |
* long cachedsamples = buf.Size / pSample->FrameSize; |
* long cachedsamples = buf.Size / pSample->FrameSize; |
395 |
|
* @endcode |
396 |
* |
* |
397 |
* @param SampleCount - number of sample points to load into RAM |
* @param SampleCount - number of sample points to load into RAM |
398 |
* @returns buffer_t structure with start address and size of |
* @returns buffer_t structure with start address and size of |
438 |
* that will be returned to determine the actual cached samples, but note |
* that will be returned to determine the actual cached samples, but note |
439 |
* that the size is given in bytes! You get the number of actually cached |
* that the size is given in bytes! You get the number of actually cached |
440 |
* samples by dividing it by the frame size of the sample: |
* samples by dividing it by the frame size of the sample: |
441 |
* |
* @code |
442 |
* buffer_t buf = pSample->LoadSampleDataWithNullSamplesExtension(acquired_samples, null_samples); |
* buffer_t buf = pSample->LoadSampleDataWithNullSamplesExtension(acquired_samples, null_samples); |
443 |
* long cachedsamples = buf.Size / pSample->FrameSize; |
* long cachedsamples = buf.Size / pSample->FrameSize; |
444 |
* |
* @endcode |
445 |
* The method will add \a NullSamplesCount silence samples past the |
* The method will add \a NullSamplesCount silence samples past the |
446 |
* official buffer end (this won't affect the 'Size' member of the |
* official buffer end (this won't affect the 'Size' member of the |
447 |
* buffer_t structure, that means 'Size' always reflects the size of the |
* buffer_t structure, that means 'Size' always reflects the size of the |
572 |
* for the next time you call this method is stored in \a pPlaybackState. |
* for the next time you call this method is stored in \a pPlaybackState. |
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* You have to allocate and initialize the playback_state_t structure by |
* You have to allocate and initialize the playback_state_t structure by |
574 |
* yourself before you use it to stream a sample: |
* yourself before you use it to stream a sample: |
575 |
* |
* @code |
576 |
* <i> |
* gig::playback_state_t playbackstate; |
577 |
* gig::playback_state_t playbackstate; <br> |
* playbackstate.position = 0; |
578 |
* playbackstate.position = 0; <br> |
* playbackstate.reverse = false; |
579 |
* playbackstate.reverse = false; <br> |
* playbackstate.loop_cycles_left = pSample->LoopPlayCount; |
580 |
* playbackstate.loop_cycles_left = pSample->LoopPlayCount; <br> |
* @endcode |
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* </i> |
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* |
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581 |
* You don't have to take care of things like if there is actually a loop |
* You don't have to take care of things like if there is actually a loop |
582 |
* defined or if the current read position is located within a loop area. |
* defined or if the current read position is located within a loop area. |
583 |
* The method already handles such cases by itself. |
* The method already handles such cases by itself. |
584 |
* |
* |
585 |
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* <b>Caution:</b> If you are using more than one streaming thread, you |
586 |
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* have to use an external decompression buffer for <b>EACH</b> |
587 |
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* streaming thread to avoid race conditions and crashes! |
588 |
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* |
589 |
* @param pBuffer destination buffer |
* @param pBuffer destination buffer |
590 |
* @param SampleCount number of sample points to read |
* @param SampleCount number of sample points to read |
591 |
* @param pPlaybackState will be used to store and reload the playback |
* @param pPlaybackState will be used to store and reload the playback |
592 |
* state for the next ReadAndLoop() call |
* state for the next ReadAndLoop() call |
593 |
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* @param pExternalDecompressionBuffer (optional) external buffer to use for decompression |
594 |
* @returns number of successfully read sample points |
* @returns number of successfully read sample points |
595 |
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* @see CreateDecompressionBuffer() |
596 |
*/ |
*/ |
597 |
unsigned long Sample::ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState) { |
unsigned long Sample::ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState, buffer_t* pExternalDecompressionBuffer) { |
598 |
unsigned long samplestoread = SampleCount, totalreadsamples = 0, readsamples, samplestoloopend; |
unsigned long samplestoread = SampleCount, totalreadsamples = 0, readsamples, samplestoloopend; |
599 |
uint8_t* pDst = (uint8_t*) pBuffer; |
uint8_t* pDst = (uint8_t*) pBuffer; |
600 |
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|
612 |
if (!pPlaybackState->reverse) { // forward playback |
if (!pPlaybackState->reverse) { // forward playback |
613 |
do { |
do { |
614 |
samplestoloopend = this->LoopEnd - GetPos(); |
samplestoloopend = this->LoopEnd - GetPos(); |
615 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend)); |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend), pExternalDecompressionBuffer); |
616 |
samplestoread -= readsamples; |
samplestoread -= readsamples; |
617 |
totalreadsamples += readsamples; |
totalreadsamples += readsamples; |
618 |
if (readsamples == samplestoloopend) { |
if (readsamples == samplestoloopend) { |
638 |
|
|
639 |
// read samples for backward playback |
// read samples for backward playback |
640 |
do { |
do { |
641 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], samplestoreadinloop); |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], samplestoreadinloop, pExternalDecompressionBuffer); |
642 |
samplestoreadinloop -= readsamples; |
samplestoreadinloop -= readsamples; |
643 |
samplestoread -= readsamples; |
samplestoread -= readsamples; |
644 |
totalreadsamples += readsamples; |
totalreadsamples += readsamples; |
662 |
// forward playback (not entered the loop yet) |
// forward playback (not entered the loop yet) |
663 |
if (!pPlaybackState->reverse) do { |
if (!pPlaybackState->reverse) do { |
664 |
samplestoloopend = this->LoopEnd - GetPos(); |
samplestoloopend = this->LoopEnd - GetPos(); |
665 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend)); |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend), pExternalDecompressionBuffer); |
666 |
samplestoread -= readsamples; |
samplestoread -= readsamples; |
667 |
totalreadsamples += readsamples; |
totalreadsamples += readsamples; |
668 |
if (readsamples == samplestoloopend) { |
if (readsamples == samplestoloopend) { |
692 |
// if not endless loop check if max. number of loop cycles have been passed |
// if not endless loop check if max. number of loop cycles have been passed |
693 |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
694 |
samplestoloopend = this->LoopEnd - GetPos(); |
samplestoloopend = this->LoopEnd - GetPos(); |
695 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoreadinloop, samplestoloopend)); |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoreadinloop, samplestoloopend), pExternalDecompressionBuffer); |
696 |
samplestoreadinloop -= readsamples; |
samplestoreadinloop -= readsamples; |
697 |
samplestoread -= readsamples; |
samplestoread -= readsamples; |
698 |
totalreadsamples += readsamples; |
totalreadsamples += readsamples; |
714 |
// if not endless loop check if max. number of loop cycles have been passed |
// if not endless loop check if max. number of loop cycles have been passed |
715 |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
716 |
samplestoloopend = this->LoopEnd - GetPos(); |
samplestoloopend = this->LoopEnd - GetPos(); |
717 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend)); |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend), pExternalDecompressionBuffer); |
718 |
samplestoread -= readsamples; |
samplestoread -= readsamples; |
719 |
totalreadsamples += readsamples; |
totalreadsamples += readsamples; |
720 |
if (readsamples == samplestoloopend) { |
if (readsamples == samplestoloopend) { |
729 |
|
|
730 |
// read on without looping |
// read on without looping |
731 |
if (samplestoread) do { |
if (samplestoread) do { |
732 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], samplestoread); |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], samplestoread, pExternalDecompressionBuffer); |
733 |
samplestoread -= readsamples; |
samplestoread -= readsamples; |
734 |
totalreadsamples += readsamples; |
totalreadsamples += readsamples; |
735 |
} while (readsamples && samplestoread); |
} while (readsamples && samplestoread); |
748 |
* and <i>SetPos()</i> if you don't want to load the sample into RAM, |
* and <i>SetPos()</i> if you don't want to load the sample into RAM, |
749 |
* thus for disk streaming. |
* thus for disk streaming. |
750 |
* |
* |
751 |
|
* <b>Caution:</b> If you are using more than one streaming thread, you |
752 |
|
* have to use an external decompression buffer for <b>EACH</b> |
753 |
|
* streaming thread to avoid race conditions and crashes! |
754 |
|
* |
755 |
* @param pBuffer destination buffer |
* @param pBuffer destination buffer |
756 |
* @param SampleCount number of sample points to read |
* @param SampleCount number of sample points to read |
757 |
|
* @param pExternalDecompressionBuffer (optional) external buffer to use for decompression |
758 |
* @returns number of successfully read sample points |
* @returns number of successfully read sample points |
759 |
* @see SetPos() |
* @see SetPos(), CreateDecompressionBuffer() |
760 |
*/ |
*/ |
761 |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) { |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount, buffer_t* pExternalDecompressionBuffer) { |
762 |
if (SampleCount == 0) return 0; |
if (SampleCount == 0) return 0; |
763 |
if (!Compressed) { |
if (!Compressed) { |
764 |
if (BitDepth == 24) { |
if (BitDepth == 24) { |
765 |
// 24 bit sample. For now just truncate to 16 bit. |
// 24 bit sample. For now just truncate to 16 bit. |
766 |
unsigned char* pSrc = this->pDecompressionBuffer; |
unsigned char* pSrc = (unsigned char*) ((pExternalDecompressionBuffer) ? pExternalDecompressionBuffer->pStart : this->InternalDecompressionBuffer.pStart); |
767 |
int16_t* pDst = static_cast<int16_t*>(pBuffer); |
int16_t* pDst = static_cast<int16_t*>(pBuffer); |
768 |
if (Channels == 2) { // Stereo |
if (Channels == 2) { // Stereo |
769 |
unsigned long readBytes = pCkData->Read(pSrc, SampleCount * 6, 1); |
unsigned long readBytes = pCkData->Read(pSrc, SampleCount * 6, 1); |
800 |
currentframeoffset = this->FrameOffset; // offset in current sample frame since last Read() |
currentframeoffset = this->FrameOffset; // offset in current sample frame since last Read() |
801 |
this->FrameOffset = 0; |
this->FrameOffset = 0; |
802 |
|
|
803 |
if (assumedsize > this->DecompressionBufferSize) { |
buffer_t* pDecompressionBuffer = (pExternalDecompressionBuffer) ? pExternalDecompressionBuffer : &InternalDecompressionBuffer; |
804 |
// local buffer reallocation - hope this won't happen |
|
805 |
if (this->pDecompressionBuffer) delete[] this->pDecompressionBuffer; |
// if decompression buffer too small, then reduce amount of samples to read |
806 |
this->pDecompressionBuffer = new unsigned char[assumedsize << 1]; // double of current needed size |
if (pDecompressionBuffer->Size < assumedsize) { |
807 |
this->DecompressionBufferSize = assumedsize << 1; |
std::cerr << "gig::Read(): WARNING - decompression buffer size too small!" << std::endl; |
808 |
|
SampleCount = WorstCaseMaxSamples(pDecompressionBuffer); |
809 |
|
remainingsamples = SampleCount; |
810 |
|
assumedsize = GuessSize(SampleCount); |
811 |
} |
} |
812 |
|
|
813 |
unsigned char* pSrc = this->pDecompressionBuffer; |
unsigned char* pSrc = (unsigned char*) pDecompressionBuffer->pStart; |
814 |
int16_t* pDst = static_cast<int16_t*>(pBuffer); |
int16_t* pDst = static_cast<int16_t*>(pBuffer); |
815 |
remainingbytes = pCkData->Read(pSrc, assumedsize, 1); |
remainingbytes = pCkData->Read(pSrc, assumedsize, 1); |
816 |
|
|
893 |
const unsigned char* const param_r = pSrc; |
const unsigned char* const param_r = pSrc; |
894 |
if (mode_r != 2) pSrc += 12; |
if (mode_r != 2) pSrc += 12; |
895 |
|
|
896 |
Decompress24(mode_l, param_l, 2, pSrc, pDst, skipsamples, copysamples); |
Decompress24(mode_l, param_l, 2, pSrc, pDst, |
897 |
|
skipsamples, copysamples, TruncatedBits); |
898 |
Decompress24(mode_r, param_r, 2, pSrc + rightChannelOffset, pDst + 1, |
Decompress24(mode_r, param_r, 2, pSrc + rightChannelOffset, pDst + 1, |
899 |
skipsamples, copysamples); |
skipsamples, copysamples, TruncatedBits); |
900 |
pDst += copysamples << 1; |
pDst += copysamples << 1; |
901 |
} |
} |
902 |
else { // Mono |
else { // Mono |
903 |
Decompress24(mode_l, param_l, 1, pSrc, pDst, skipsamples, copysamples); |
Decompress24(mode_l, param_l, 1, pSrc, pDst, |
904 |
|
skipsamples, copysamples, TruncatedBits); |
905 |
pDst += copysamples; |
pDst += copysamples; |
906 |
} |
} |
907 |
} |
} |
933 |
assumedsize = GuessSize(remainingsamples); |
assumedsize = GuessSize(remainingsamples); |
934 |
pCkData->SetPos(remainingbytes, RIFF::stream_backward); |
pCkData->SetPos(remainingbytes, RIFF::stream_backward); |
935 |
if (pCkData->RemainingBytes() < assumedsize) assumedsize = pCkData->RemainingBytes(); |
if (pCkData->RemainingBytes() < assumedsize) assumedsize = pCkData->RemainingBytes(); |
936 |
remainingbytes = pCkData->Read(this->pDecompressionBuffer, assumedsize, 1); |
remainingbytes = pCkData->Read(pDecompressionBuffer->pStart, assumedsize, 1); |
937 |
pSrc = this->pDecompressionBuffer; |
pSrc = (unsigned char*) pDecompressionBuffer->pStart; |
938 |
} |
} |
939 |
} // while |
} // while |
940 |
|
|
944 |
} |
} |
945 |
} |
} |
946 |
|
|
947 |
|
/** |
948 |
|
* Allocates a decompression buffer for streaming (compressed) samples |
949 |
|
* with Sample::Read(). If you are using more than one streaming thread |
950 |
|
* in your application you <b>HAVE</b> to create a decompression buffer |
951 |
|
* for <b>EACH</b> of your streaming threads and provide it with the |
952 |
|
* Sample::Read() call in order to avoid race conditions and crashes. |
953 |
|
* |
954 |
|
* You should free the memory occupied by the allocated buffer(s) once |
955 |
|
* you don't need one of your streaming threads anymore by calling |
956 |
|
* DestroyDecompressionBuffer(). |
957 |
|
* |
958 |
|
* @param MaxReadSize - the maximum size (in sample points) you ever |
959 |
|
* expect to read with one Read() call |
960 |
|
* @returns allocated decompression buffer |
961 |
|
* @see DestroyDecompressionBuffer() |
962 |
|
*/ |
963 |
|
buffer_t Sample::CreateDecompressionBuffer(unsigned long MaxReadSize) { |
964 |
|
buffer_t result; |
965 |
|
const double worstCaseHeaderOverhead = |
966 |
|
(256.0 /*frame size*/ + 12.0 /*header*/ + 2.0 /*compression type flag (stereo)*/) / 256.0; |
967 |
|
result.Size = (unsigned long) (double(MaxReadSize) * 3.0 /*(24 Bit)*/ * 2.0 /*stereo*/ * worstCaseHeaderOverhead); |
968 |
|
result.pStart = new int8_t[result.Size]; |
969 |
|
result.NullExtensionSize = 0; |
970 |
|
return result; |
971 |
|
} |
972 |
|
|
973 |
|
/** |
974 |
|
* Free decompression buffer, previously created with |
975 |
|
* CreateDecompressionBuffer(). |
976 |
|
* |
977 |
|
* @param DecompressionBuffer - previously allocated decompression |
978 |
|
* buffer to free |
979 |
|
*/ |
980 |
|
void Sample::DestroyDecompressionBuffer(buffer_t& DecompressionBuffer) { |
981 |
|
if (DecompressionBuffer.Size && DecompressionBuffer.pStart) { |
982 |
|
delete[] (int8_t*) DecompressionBuffer.pStart; |
983 |
|
DecompressionBuffer.pStart = NULL; |
984 |
|
DecompressionBuffer.Size = 0; |
985 |
|
DecompressionBuffer.NullExtensionSize = 0; |
986 |
|
} |
987 |
|
} |
988 |
|
|
989 |
Sample::~Sample() { |
Sample::~Sample() { |
990 |
Instances--; |
Instances--; |
991 |
if (!Instances && pDecompressionBuffer) { |
if (!Instances && InternalDecompressionBuffer.Size) { |
992 |
delete[] pDecompressionBuffer; |
delete[] (unsigned char*) InternalDecompressionBuffer.pStart; |
993 |
pDecompressionBuffer = NULL; |
InternalDecompressionBuffer.pStart = NULL; |
994 |
|
InternalDecompressionBuffer.Size = 0; |
995 |
} |
} |
996 |
if (FrameTable) delete[] FrameTable; |
if (FrameTable) delete[] FrameTable; |
997 |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
1162 |
VCFType = vcf_type_lowpassturbo; |
VCFType = vcf_type_lowpassturbo; |
1163 |
} |
} |
1164 |
|
|
1165 |
// get the corresponding velocity->volume table from the table map or create & calculate that table if it doesn't exist yet |
pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve, |
1166 |
uint32_t tableKey = (VelocityResponseCurve<<16) | (VelocityResponseDepth<<8) | VelocityResponseCurveScaling; |
VelocityResponseDepth, |
1167 |
|
VelocityResponseCurveScaling); |
1168 |
|
|
1169 |
|
curve_type_t curveType = ReleaseVelocityResponseCurve; |
1170 |
|
uint8_t depth = ReleaseVelocityResponseDepth; |
1171 |
|
|
1172 |
|
// this models a strange behaviour or bug in GSt: two of the |
1173 |
|
// velocity response curves for release time are not used even |
1174 |
|
// if specified, instead another curve is chosen. |
1175 |
|
|
1176 |
|
if ((curveType == curve_type_nonlinear && depth == 0) || |
1177 |
|
(curveType == curve_type_special && depth == 4)) { |
1178 |
|
curveType = curve_type_nonlinear; |
1179 |
|
depth = 3; |
1180 |
|
} |
1181 |
|
pVelocityReleaseTable = GetVelocityTable(curveType, depth, 0); |
1182 |
|
|
1183 |
|
SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360)); |
1184 |
|
} |
1185 |
|
|
1186 |
|
// get the corresponding velocity table from the table map or create & calculate that table if it doesn't exist yet |
1187 |
|
double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) |
1188 |
|
{ |
1189 |
|
double* table; |
1190 |
|
uint32_t tableKey = (curveType<<16) | (depth<<8) | scaling; |
1191 |
if (pVelocityTables->count(tableKey)) { // if key exists |
if (pVelocityTables->count(tableKey)) { // if key exists |
1192 |
pVelocityAttenuationTable = (*pVelocityTables)[tableKey]; |
table = (*pVelocityTables)[tableKey]; |
1193 |
} |
} |
1194 |
else { |
else { |
1195 |
pVelocityAttenuationTable = |
table = CreateVelocityTable(curveType, depth, scaling); |
1196 |
CreateVelocityTable(VelocityResponseCurve, |
(*pVelocityTables)[tableKey] = table; // put the new table into the tables map |
|
VelocityResponseDepth, |
|
|
VelocityResponseCurveScaling); |
|
|
(*pVelocityTables)[tableKey] = pVelocityAttenuationTable; // put the new table into the tables map |
|
1197 |
} |
} |
1198 |
|
return table; |
1199 |
} |
} |
1200 |
|
|
1201 |
leverage_ctrl_t DimensionRegion::DecodeLeverageController(_lev_ctrl_t EncodedController) { |
leverage_ctrl_t DimensionRegion::DecodeLeverageController(_lev_ctrl_t EncodedController) { |
1346 |
return pVelocityAttenuationTable[MIDIKeyVelocity]; |
return pVelocityAttenuationTable[MIDIKeyVelocity]; |
1347 |
} |
} |
1348 |
|
|
1349 |
|
double DimensionRegion::GetVelocityRelease(uint8_t MIDIKeyVelocity) { |
1350 |
|
return pVelocityReleaseTable[MIDIKeyVelocity]; |
1351 |
|
} |
1352 |
|
|
1353 |
double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) { |
double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) { |
1354 |
|
|
1355 |
// line-segment approximations of the 15 velocity curves |
// line-segment approximations of the 15 velocity curves |
1451 |
pDimensionDefinitions[i].zones = 0x01 << bits; // = pow(2,bits) |
pDimensionDefinitions[i].zones = 0x01 << bits; // = pow(2,bits) |
1452 |
pDimensionDefinitions[i].split_type = (dimension == dimension_layer || |
pDimensionDefinitions[i].split_type = (dimension == dimension_layer || |
1453 |
dimension == dimension_samplechannel || |
dimension == dimension_samplechannel || |
1454 |
dimension == dimension_releasetrigger) ? split_type_bit |
dimension == dimension_releasetrigger || |
1455 |
: split_type_normal; |
dimension == dimension_roundrobin || |
1456 |
|
dimension == dimension_random) ? split_type_bit |
1457 |
|
: split_type_normal; |
1458 |
pDimensionDefinitions[i].ranges = NULL; // it's not possible to check velocity dimensions for custom defined ranges at this point |
pDimensionDefinitions[i].ranges = NULL; // it's not possible to check velocity dimensions for custom defined ranges at this point |
1459 |
pDimensionDefinitions[i].zone_size = |
pDimensionDefinitions[i].zone_size = |
1460 |
(pDimensionDefinitions[i].split_type == split_type_normal) ? 128 / pDimensionDefinitions[i].zones |
(pDimensionDefinitions[i].split_type == split_type_normal) ? 128 / pDimensionDefinitions[i].zones |
1610 |
else return static_cast<gig::Sample*>(pSample = GetSampleFromWavePool(WavePoolTableIndex)); |
else return static_cast<gig::Sample*>(pSample = GetSampleFromWavePool(WavePoolTableIndex)); |
1611 |
} |
} |
1612 |
|
|
1613 |
Sample* Region::GetSampleFromWavePool(unsigned int WavePoolTableIndex) { |
Sample* Region::GetSampleFromWavePool(unsigned int WavePoolTableIndex, progress_t* pProgress) { |
1614 |
if ((int32_t)WavePoolTableIndex == -1) return NULL; |
if ((int32_t)WavePoolTableIndex == -1) return NULL; |
1615 |
File* file = (File*) GetParent()->GetParent(); |
File* file = (File*) GetParent()->GetParent(); |
1616 |
unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
1617 |
Sample* sample = file->GetFirstSample(); |
unsigned long soughtfileno = file->pWavePoolTableHi[WavePoolTableIndex]; |
1618 |
|
Sample* sample = file->GetFirstSample(pProgress); |
1619 |
while (sample) { |
while (sample) { |
1620 |
if (sample->ulWavePoolOffset == soughtoffset) return static_cast<gig::Sample*>(pSample = sample); |
if (sample->ulWavePoolOffset == soughtoffset && |
1621 |
|
sample->FileNo == soughtfileno) return static_cast<gig::Sample*>(pSample = sample); |
1622 |
sample = file->GetNextSample(); |
sample = file->GetNextSample(); |
1623 |
} |
} |
1624 |
return NULL; |
return NULL; |
1629 |
// *************** Instrument *************** |
// *************** Instrument *************** |
1630 |
// * |
// * |
1631 |
|
|
1632 |
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) { |
1633 |
// Initialization |
// Initialization |
1634 |
for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
1635 |
RegionIndex = -1; |
RegionIndex = -1; |
1660 |
unsigned int iRegion = 0; |
unsigned int iRegion = 0; |
1661 |
while (rgn) { |
while (rgn) { |
1662 |
if (rgn->GetListType() == LIST_TYPE_RGN) { |
if (rgn->GetListType() == LIST_TYPE_RGN) { |
1663 |
|
__notify_progress(pProgress, (float) iRegion / (float) Regions); |
1664 |
pRegions[iRegion] = new Region(this, rgn); |
pRegions[iRegion] = new Region(this, rgn); |
1665 |
iRegion++; |
iRegion++; |
1666 |
} |
} |
1673 |
RegionKeyTable[iKey] = pRegions[iReg]; |
RegionKeyTable[iKey] = pRegions[iReg]; |
1674 |
} |
} |
1675 |
} |
} |
1676 |
|
|
1677 |
|
__notify_progress(pProgress, 1.0f); // notify done |
1678 |
} |
} |
1679 |
|
|
1680 |
Instrument::~Instrument() { |
Instrument::~Instrument() { |
1761 |
pInstruments->clear(); |
pInstruments->clear(); |
1762 |
delete pInstruments; |
delete pInstruments; |
1763 |
} |
} |
1764 |
|
// free extension files |
1765 |
|
for (std::list<RIFF::File*>::iterator i = ExtensionFiles.begin() ; i != ExtensionFiles.end() ; i++) |
1766 |
|
delete *i; |
1767 |
} |
} |
1768 |
|
|
1769 |
Sample* File::GetFirstSample() { |
Sample* File::GetFirstSample(progress_t* pProgress) { |
1770 |
if (!pSamples) LoadSamples(); |
if (!pSamples) LoadSamples(pProgress); |
1771 |
if (!pSamples) return NULL; |
if (!pSamples) return NULL; |
1772 |
SamplesIterator = pSamples->begin(); |
SamplesIterator = pSamples->begin(); |
1773 |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
1779 |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
1780 |
} |
} |
1781 |
|
|
1782 |
void File::LoadSamples() { |
void File::LoadSamples(progress_t* pProgress) { |
1783 |
RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); |
RIFF::File* file = pRIFF; |
1784 |
if (wvpl) { |
|
1785 |
unsigned long wvplFileOffset = wvpl->GetFilePos(); |
// just for progress calculation |
1786 |
RIFF::List* wave = wvpl->GetFirstSubList(); |
int iSampleIndex = 0; |
1787 |
while (wave) { |
int iTotalSamples = WavePoolCount; |
1788 |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
|
1789 |
if (!pSamples) pSamples = new SampleList; |
// check if samples should be loaded from extension files |
1790 |
unsigned long waveFileOffset = wave->GetFilePos(); |
int lastFileNo = 0; |
1791 |
pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset)); |
for (int i = 0 ; i < WavePoolCount ; i++) { |
1792 |
|
if (pWavePoolTableHi[i] > lastFileNo) lastFileNo = pWavePoolTableHi[i]; |
1793 |
|
} |
1794 |
|
String name(pRIFF->Filename); |
1795 |
|
int nameLen = pRIFF->Filename.length(); |
1796 |
|
char suffix[6]; |
1797 |
|
if (nameLen > 4 && pRIFF->Filename.substr(nameLen - 4) == ".gig") nameLen -= 4; |
1798 |
|
|
1799 |
|
for (int fileNo = 0 ; ; ) { |
1800 |
|
RIFF::List* wvpl = file->GetSubList(LIST_TYPE_WVPL); |
1801 |
|
if (wvpl) { |
1802 |
|
unsigned long wvplFileOffset = wvpl->GetFilePos(); |
1803 |
|
RIFF::List* wave = wvpl->GetFirstSubList(); |
1804 |
|
while (wave) { |
1805 |
|
if (wave->GetListType() == LIST_TYPE_WAVE) { |
1806 |
|
// notify current progress |
1807 |
|
const float subprogress = (float) iSampleIndex / (float) iTotalSamples; |
1808 |
|
__notify_progress(pProgress, subprogress); |
1809 |
|
|
1810 |
|
if (!pSamples) pSamples = new SampleList; |
1811 |
|
unsigned long waveFileOffset = wave->GetFilePos(); |
1812 |
|
pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset, fileNo)); |
1813 |
|
|
1814 |
|
iSampleIndex++; |
1815 |
|
} |
1816 |
|
wave = wvpl->GetNextSubList(); |
1817 |
} |
} |
1818 |
wave = wvpl->GetNextSubList(); |
|
1819 |
|
if (fileNo == lastFileNo) break; |
1820 |
|
|
1821 |
|
// open extension file (*.gx01, *.gx02, ...) |
1822 |
|
fileNo++; |
1823 |
|
sprintf(suffix, ".gx%02d", fileNo); |
1824 |
|
name.replace(nameLen, 5, suffix); |
1825 |
|
file = new RIFF::File(name); |
1826 |
|
ExtensionFiles.push_back(file); |
1827 |
} |
} |
1828 |
|
else throw gig::Exception("Mandatory <wvpl> chunk not found."); |
1829 |
} |
} |
1830 |
else throw gig::Exception("Mandatory <wvpl> chunk not found."); |
|
1831 |
|
__notify_progress(pProgress, 1.0); // notify done |
1832 |
} |
} |
1833 |
|
|
1834 |
Instrument* File::GetFirstInstrument() { |
Instrument* File::GetFirstInstrument() { |
1847 |
/** |
/** |
1848 |
* Returns the instrument with the given index. |
* Returns the instrument with the given index. |
1849 |
* |
* |
1850 |
|
* @param index - number of the sought instrument (0..n) |
1851 |
|
* @param pProgress - optional: callback function for progress notification |
1852 |
* @returns sought instrument or NULL if there's no such instrument |
* @returns sought instrument or NULL if there's no such instrument |
1853 |
*/ |
*/ |
1854 |
Instrument* File::GetInstrument(uint index) { |
Instrument* File::GetInstrument(uint index, progress_t* pProgress) { |
1855 |
if (!pInstruments) LoadInstruments(); |
if (!pInstruments) { |
1856 |
|
// TODO: hack - we simply load ALL samples here, it would have been done in the Region constructor anyway (ATM) |
1857 |
|
|
1858 |
|
// sample loading subtask |
1859 |
|
progress_t subprogress; |
1860 |
|
__divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask |
1861 |
|
__notify_progress(&subprogress, 0.0f); |
1862 |
|
GetFirstSample(&subprogress); // now force all samples to be loaded |
1863 |
|
__notify_progress(&subprogress, 1.0f); |
1864 |
|
|
1865 |
|
// instrument loading subtask |
1866 |
|
if (pProgress && pProgress->callback) { |
1867 |
|
subprogress.__range_min = subprogress.__range_max; |
1868 |
|
subprogress.__range_max = pProgress->__range_max; // schedule remaining percentage for this subtask |
1869 |
|
} |
1870 |
|
__notify_progress(&subprogress, 0.0f); |
1871 |
|
LoadInstruments(&subprogress); |
1872 |
|
__notify_progress(&subprogress, 1.0f); |
1873 |
|
} |
1874 |
if (!pInstruments) return NULL; |
if (!pInstruments) return NULL; |
1875 |
InstrumentsIterator = pInstruments->begin(); |
InstrumentsIterator = pInstruments->begin(); |
1876 |
for (uint i = 0; InstrumentsIterator != pInstruments->end(); i++) { |
for (uint i = 0; InstrumentsIterator != pInstruments->end(); i++) { |
1880 |
return NULL; |
return NULL; |
1881 |
} |
} |
1882 |
|
|
1883 |
void File::LoadInstruments() { |
void File::LoadInstruments(progress_t* pProgress) { |
1884 |
RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); |
RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); |
1885 |
if (lstInstruments) { |
if (lstInstruments) { |
1886 |
|
int iInstrumentIndex = 0; |
1887 |
RIFF::List* lstInstr = lstInstruments->GetFirstSubList(); |
RIFF::List* lstInstr = lstInstruments->GetFirstSubList(); |
1888 |
while (lstInstr) { |
while (lstInstr) { |
1889 |
if (lstInstr->GetListType() == LIST_TYPE_INS) { |
if (lstInstr->GetListType() == LIST_TYPE_INS) { |
1890 |
|
// notify current progress |
1891 |
|
const float localProgress = (float) iInstrumentIndex / (float) Instruments; |
1892 |
|
__notify_progress(pProgress, localProgress); |
1893 |
|
|
1894 |
|
// divide local progress into subprogress for loading current Instrument |
1895 |
|
progress_t subprogress; |
1896 |
|
__divide_progress(pProgress, &subprogress, Instruments, iInstrumentIndex); |
1897 |
|
|
1898 |
if (!pInstruments) pInstruments = new InstrumentList; |
if (!pInstruments) pInstruments = new InstrumentList; |
1899 |
pInstruments->push_back(new Instrument(this, lstInstr)); |
pInstruments->push_back(new Instrument(this, lstInstr, &subprogress)); |
1900 |
|
|
1901 |
|
iInstrumentIndex++; |
1902 |
} |
} |
1903 |
lstInstr = lstInstruments->GetNextSubList(); |
lstInstr = lstInstruments->GetNextSubList(); |
1904 |
} |
} |
1905 |
|
__notify_progress(pProgress, 1.0); // notify done |
1906 |
} |
} |
1907 |
else throw gig::Exception("Mandatory <lins> list chunk not found."); |
else throw gig::Exception("Mandatory <lins> list chunk not found."); |
1908 |
} |
} |
1919 |
std::cout << "gig::Exception: " << Message << std::endl; |
std::cout << "gig::Exception: " << Message << std::endl; |
1920 |
} |
} |
1921 |
|
|
1922 |
|
|
1923 |
|
// *************** functions *************** |
1924 |
|
// * |
1925 |
|
|
1926 |
|
/** |
1927 |
|
* Returns the name of this C++ library. This is usually "libgig" of |
1928 |
|
* course. This call is equivalent to RIFF::libraryName() and |
1929 |
|
* DLS::libraryName(). |
1930 |
|
*/ |
1931 |
|
String libraryName() { |
1932 |
|
return PACKAGE; |
1933 |
|
} |
1934 |
|
|
1935 |
|
/** |
1936 |
|
* Returns version of this C++ library. This call is equivalent to |
1937 |
|
* RIFF::libraryVersion() and DLS::libraryVersion(). |
1938 |
|
*/ |
1939 |
|
String libraryVersion() { |
1940 |
|
return VERSION; |
1941 |
|
} |
1942 |
|
|
1943 |
} // namespace gig |
} // namespace gig |