/[svn]/libgig/trunk/src/gig.cpp
ViewVC logotype

Diff of /libgig/trunk/src/gig.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 2700 by schoenebeck, Mon Jan 12 23:22:29 2015 UTC revision 3350 by schoenebeck, Tue Oct 3 17:35:02 2017 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   libgig - C++ cross-platform Gigasampler format file access library    *   *   libgig - C++ cross-platform Gigasampler format file access library    *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003-2015 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2017 by Christian Schoenebeck                      *
6   *                              <cuse@users.sourceforge.net>               *   *                              <cuse@users.sourceforge.net>               *
7   *                                                                         *   *                                                                         *
8   *   This library is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
# Line 24  Line 24 
24  #include "gig.h"  #include "gig.h"
25    
26  #include "helper.h"  #include "helper.h"
27    #include "Serialization.h"
28    
29  #include <algorithm>  #include <algorithm>
30  #include <math.h>  #include <math.h>
31  #include <iostream>  #include <iostream>
32  #include <assert.h>  #include <assert.h>
33    
34    /// libgig's current file format version (for extending the original Giga file
35    /// format with libgig's own custom data / custom features).
36    #define GIG_FILE_EXT_VERSION    2
37    
38  /// Initial size of the sample buffer which is used for decompression of  /// Initial size of the sample buffer which is used for decompression of
39  /// compressed sample wave streams - this value should always be bigger than  /// compressed sample wave streams - this value should always be bigger than
40  /// the biggest sample piece expected to be read by the sampler engine,  /// the biggest sample piece expected to be read by the sampler engine,
# Line 51  Line 56 
56  #define GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(x)    ((x & 0x03) << 3)  #define GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(x)    ((x & 0x03) << 3)
57  #define GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(x)  ((x & 0x03) << 5)  #define GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(x)  ((x & 0x03) << 5)
58    
59    #define SRLZ(member) \
60        archive->serializeMember(*this, member, #member);
61    
62  namespace gig {  namespace gig {
63    
64  // *************** Internal functions for sample decompression ***************  // *************** Internal functions for sample decompression ***************
# Line 91  namespace { Line 99  namespace {
99      void Decompress16(int compressionmode, const unsigned char* params,      void Decompress16(int compressionmode, const unsigned char* params,
100                        int srcStep, int dstStep,                        int srcStep, int dstStep,
101                        const unsigned char* pSrc, int16_t* pDst,                        const unsigned char* pSrc, int16_t* pDst,
102                        unsigned long currentframeoffset,                        file_offset_t currentframeoffset,
103                        unsigned long copysamples)                        file_offset_t copysamples)
104      {      {
105          switch (compressionmode) {          switch (compressionmode) {
106              case 0: // 16 bit uncompressed              case 0: // 16 bit uncompressed
# Line 128  namespace { Line 136  namespace {
136    
137      void Decompress24(int compressionmode, const unsigned char* params,      void Decompress24(int compressionmode, const unsigned char* params,
138                        int dstStep, const unsigned char* pSrc, uint8_t* pDst,                        int dstStep, const unsigned char* pSrc, uint8_t* pDst,
139                        unsigned long currentframeoffset,                        file_offset_t currentframeoffset,
140                        unsigned long copysamples, int truncatedBits)                        file_offset_t copysamples, int truncatedBits)
141      {      {
142          int y, dy, ddy, dddy;          int y, dy, ddy, dddy;
143    
# Line 265  namespace { Line 273  namespace {
273       * steps.       * steps.
274       *       *
275       * Once the whole data was processed by __calculateCRC(), one should       * Once the whole data was processed by __calculateCRC(), one should
276       * call __encodeCRC() to get the final CRC result.       * call __finalizeCRC() to get the final CRC result.
277       *       *
278       * @param buf     - pointer to data the CRC shall be calculated of       * @param buf     - pointer to data the CRC shall be calculated of
279       * @param bufSize - size of the data to be processed       * @param bufSize - size of the data to be processed
280       * @param crc     - variable the CRC sum shall be stored to       * @param crc     - variable the CRC sum shall be stored to
281       */       */
282      static void __calculateCRC(unsigned char* buf, int bufSize, uint32_t& crc) {      static void __calculateCRC(unsigned char* buf, size_t bufSize, uint32_t& crc) {
283          for (int i = 0 ; i < bufSize ; i++) {          for (size_t i = 0 ; i < bufSize ; i++) {
284              crc = __CRCTable[(crc ^ buf[i]) & 0xff] ^ (crc >> 8);              crc = __CRCTable[(crc ^ buf[i]) & 0xff] ^ (crc >> 8);
285          }          }
286      }      }
# Line 282  namespace { Line 290  namespace {
290       *       *
291       * @param crc - variable previously passed to __calculateCRC()       * @param crc - variable previously passed to __calculateCRC()
292       */       */
293      inline static uint32_t __encodeCRC(const uint32_t& crc) {      inline static void __finalizeCRC(uint32_t& crc) {
294          return crc ^ 0xffffffff;          crc ^= 0xffffffff;
295      }      }
296    
297    
# Line 311  namespace { Line 319  namespace {
319    
320    
321    
322    // *************** leverage_ctrl_t ***************
323    // *
324    
325        void leverage_ctrl_t::serialize(Serialization::Archive* archive) {
326            SRLZ(type);
327            SRLZ(controller_number);
328        }
329    
330    
331    
332    // *************** crossfade_t ***************
333    // *
334    
335        void crossfade_t::serialize(Serialization::Archive* archive) {
336            SRLZ(in_start);
337            SRLZ(in_end);
338            SRLZ(out_start);
339            SRLZ(out_end);
340        }
341    
342    
343    
344    // *************** eg_opt_t ***************
345    // *
346    
347        eg_opt_t::eg_opt_t() {
348            AttackCancel     = true;
349            AttackHoldCancel = true;
350            Decay1Cancel     = true;
351            Decay2Cancel     = true;
352            ReleaseCancel    = true;
353        }
354    
355        void eg_opt_t::serialize(Serialization::Archive* archive) {
356            SRLZ(AttackCancel);
357            SRLZ(AttackHoldCancel);
358            SRLZ(Decay1Cancel);
359            SRLZ(Decay2Cancel);
360            SRLZ(ReleaseCancel);
361        }
362    
363    
364    
365  // *************** Sample ***************  // *************** Sample ***************
366  // *  // *
367    
368      unsigned int Sample::Instances = 0;      size_t       Sample::Instances = 0;
369      buffer_t     Sample::InternalDecompressionBuffer;      buffer_t     Sample::InternalDecompressionBuffer;
370    
371      /** @brief Constructor.      /** @brief Constructor.
# Line 334  namespace { Line 385  namespace {
385       *                         ('wvpl') list chunk       *                         ('wvpl') list chunk
386       * @param fileNo         - number of an extension file where this sample       * @param fileNo         - number of an extension file where this sample
387       *                         is located, 0 otherwise       *                         is located, 0 otherwise
388         * @param index          - wave pool index of sample (may be -1 on new sample)
389       */       */
390      Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) {      Sample::Sample(File* pFile, RIFF::List* waveList, file_offset_t WavePoolOffset, unsigned long fileNo, int index)
391            : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset)
392        {
393          static const DLS::Info::string_length_t fixedStringLengths[] = {          static const DLS::Info::string_length_t fixedStringLengths[] = {
394              { CHUNK_ID_INAM, 64 },              { CHUNK_ID_INAM, 64 },
395              { 0, 0 }              { 0, 0 }
# Line 345  namespace { Line 399  namespace {
399          FileNo = fileNo;          FileNo = fileNo;
400    
401          __resetCRC(crc);          __resetCRC(crc);
402            // if this is not a new sample, try to get the sample's already existing
403            // CRC32 checksum from disk, this checksum will reflect the sample's CRC32
404            // checksum of the time when the sample was consciously modified by the
405            // user for the last time (by calling Sample::Write() that is).
406            if (index >= 0) { // not a new file ...
407                try {
408                    uint32_t crc = pFile->GetSampleChecksumByIndex(index);
409                    this->crc = crc;
410                } catch (...) {}
411            }
412    
413          pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX);          pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX);
414          if (pCk3gix) {          if (pCk3gix) {
# Line 477  namespace { Line 541  namespace {
541          const int iReadAtOnce = 32*1024;          const int iReadAtOnce = 32*1024;
542          char* buf = new char[iReadAtOnce * orig->FrameSize];          char* buf = new char[iReadAtOnce * orig->FrameSize];
543          Sample* pOrig = (Sample*) orig; //HACK: remove constness for now          Sample* pOrig = (Sample*) orig; //HACK: remove constness for now
544          unsigned long restorePos = pOrig->GetPos();          file_offset_t restorePos = pOrig->GetPos();
545          pOrig->SetPos(0);          pOrig->SetPos(0);
546          SetPos(0);          SetPos(0);
547          for (unsigned long n = pOrig->Read(buf, iReadAtOnce); n;          for (file_offset_t n = pOrig->Read(buf, iReadAtOnce); n;
548                             n = pOrig->Read(buf, iReadAtOnce))                             n = pOrig->Read(buf, iReadAtOnce))
549          {          {
550              Write(buf, n);              Write(buf, n);
# Line 565  namespace { Line 629  namespace {
629      void Sample::ScanCompressedSample() {      void Sample::ScanCompressedSample() {
630          //TODO: we have to add some more scans here (e.g. determine compression rate)          //TODO: we have to add some more scans here (e.g. determine compression rate)
631          this->SamplesTotal = 0;          this->SamplesTotal = 0;
632          std::list<unsigned long> frameOffsets;          std::list<file_offset_t> frameOffsets;
633    
634          SamplesPerFrame = BitDepth == 24 ? 256 : 2048;          SamplesPerFrame = BitDepth == 24 ? 256 : 2048;
635          WorstCaseFrameSize = SamplesPerFrame * FrameSize + Channels; // +Channels for compression flag          WorstCaseFrameSize = SamplesPerFrame * FrameSize + Channels; // +Channels for compression flag
# Line 581  namespace { Line 645  namespace {
645                  const int mode_l = pCkData->ReadUint8();                  const int mode_l = pCkData->ReadUint8();
646                  const int mode_r = pCkData->ReadUint8();                  const int mode_r = pCkData->ReadUint8();
647                  if (mode_l > 5 || mode_r > 5) throw gig::Exception("Unknown compression mode");                  if (mode_l > 5 || mode_r > 5) throw gig::Exception("Unknown compression mode");
648                  const unsigned long frameSize = bytesPerFrame[mode_l] + bytesPerFrame[mode_r];                  const file_offset_t frameSize = bytesPerFrame[mode_l] + bytesPerFrame[mode_r];
649    
650                  if (pCkData->RemainingBytes() <= frameSize) {                  if (pCkData->RemainingBytes() <= frameSize) {
651                      SamplesInLastFrame =                      SamplesInLastFrame =
# Line 600  namespace { Line 664  namespace {
664    
665                  const int mode = pCkData->ReadUint8();                  const int mode = pCkData->ReadUint8();
666                  if (mode > 5) throw gig::Exception("Unknown compression mode");                  if (mode > 5) throw gig::Exception("Unknown compression mode");
667                  const unsigned long frameSize = bytesPerFrame[mode];                  const file_offset_t frameSize = bytesPerFrame[mode];
668    
669                  if (pCkData->RemainingBytes() <= frameSize) {                  if (pCkData->RemainingBytes() <= frameSize) {
670                      SamplesInLastFrame =                      SamplesInLastFrame =
# Line 616  namespace { Line 680  namespace {
680    
681          // Build the frames table (which is used for fast resolving of a frame's chunk offset)          // Build the frames table (which is used for fast resolving of a frame's chunk offset)
682          if (FrameTable) delete[] FrameTable;          if (FrameTable) delete[] FrameTable;
683          FrameTable = new unsigned long[frameOffsets.size()];          FrameTable = new file_offset_t[frameOffsets.size()];
684          std::list<unsigned long>::iterator end  = frameOffsets.end();          std::list<file_offset_t>::iterator end  = frameOffsets.end();
685          std::list<unsigned long>::iterator iter = frameOffsets.begin();          std::list<file_offset_t>::iterator iter = frameOffsets.begin();
686          for (int i = 0; iter != end; i++, iter++) {          for (int i = 0; iter != end; i++, iter++) {
687              FrameTable[i] = *iter;              FrameTable[i] = *iter;
688          }          }
# Line 659  namespace { Line 723  namespace {
723       *                      the cached sample data in bytes       *                      the cached sample data in bytes
724       * @see                 ReleaseSampleData(), Read(), SetPos()       * @see                 ReleaseSampleData(), Read(), SetPos()
725       */       */
726      buffer_t Sample::LoadSampleData(unsigned long SampleCount) {      buffer_t Sample::LoadSampleData(file_offset_t SampleCount) {
727          return LoadSampleDataWithNullSamplesExtension(SampleCount, 0); // 0 amount of NullSamples          return LoadSampleDataWithNullSamplesExtension(SampleCount, 0); // 0 amount of NullSamples
728      }      }
729    
# Line 718  namespace { Line 782  namespace {
782       *                           size of the cached sample data in bytes       *                           size of the cached sample data in bytes
783       * @see                      ReleaseSampleData(), Read(), SetPos()       * @see                      ReleaseSampleData(), Read(), SetPos()
784       */       */
785      buffer_t Sample::LoadSampleDataWithNullSamplesExtension(unsigned long SampleCount, uint NullSamplesCount) {      buffer_t Sample::LoadSampleDataWithNullSamplesExtension(file_offset_t SampleCount, uint NullSamplesCount) {
786          if (SampleCount > this->SamplesTotal) SampleCount = this->SamplesTotal;          if (SampleCount > this->SamplesTotal) SampleCount = this->SamplesTotal;
787          if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart;          if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart;
788          unsigned long allocationsize = (SampleCount + NullSamplesCount) * this->FrameSize;          file_offset_t allocationsize = (SampleCount + NullSamplesCount) * this->FrameSize;
789          SetPos(0); // reset read position to begin of sample          SetPos(0); // reset read position to begin of sample
790          RAMCache.pStart            = new int8_t[allocationsize];          RAMCache.pStart            = new int8_t[allocationsize];
791          RAMCache.Size              = Read(RAMCache.pStart, SampleCount) * this->FrameSize;          RAMCache.Size              = Read(RAMCache.pStart, SampleCount) * this->FrameSize;
# Line 785  namespace { Line 849  namespace {
849       * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with       * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with
850       * other formats will fail!       * other formats will fail!
851       *       *
852       * @param iNewSize - new sample wave data size in sample points (must be       * @param NewSize - new sample wave data size in sample points (must be
853       *                   greater than zero)       *                  greater than zero)
854       * @throws DLS::Excecption if FormatTag != DLS_WAVE_FORMAT_PCM       * @throws DLS::Excecption if FormatTag != DLS_WAVE_FORMAT_PCM
855       *                         or if \a iNewSize is less than 1       * @throws DLS::Exception if \a NewSize is less than 1 or unrealistic large
856       * @throws gig::Exception if existing sample is compressed       * @throws gig::Exception if existing sample is compressed
857       * @see DLS::Sample::GetSize(), DLS::Sample::FrameSize,       * @see DLS::Sample::GetSize(), DLS::Sample::FrameSize,
858       *      DLS::Sample::FormatTag, File::Save()       *      DLS::Sample::FormatTag, File::Save()
859       */       */
860      void Sample::Resize(int iNewSize) {      void Sample::Resize(file_offset_t NewSize) {
861          if (Compressed) throw gig::Exception("There is no support for modifying compressed samples (yet)");          if (Compressed) throw gig::Exception("There is no support for modifying compressed samples (yet)");
862          DLS::Sample::Resize(iNewSize);          DLS::Sample::Resize(NewSize);
863      }      }
864    
865      /**      /**
# Line 819  namespace { Line 883  namespace {
883       * @returns            the new sample position       * @returns            the new sample position
884       * @see                Read()       * @see                Read()
885       */       */
886      unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) {      file_offset_t Sample::SetPos(file_offset_t SampleCount, RIFF::stream_whence_t Whence) {
887          if (Compressed) {          if (Compressed) {
888              switch (Whence) {              switch (Whence) {
889                  case RIFF::stream_curpos:                  case RIFF::stream_curpos:
# Line 837  namespace { Line 901  namespace {
901              }              }
902              if (this->SamplePos > this->SamplesTotal) this->SamplePos = this->SamplesTotal;              if (this->SamplePos > this->SamplesTotal) this->SamplePos = this->SamplesTotal;
903    
904              unsigned long frame = this->SamplePos / 2048; // to which frame to jump              file_offset_t frame = this->SamplePos / 2048; // to which frame to jump
905              this->FrameOffset   = this->SamplePos % 2048; // offset (in sample points) within that frame              this->FrameOffset   = this->SamplePos % 2048; // offset (in sample points) within that frame
906              pCkData->SetPos(FrameTable[frame]);           // set chunk pointer to the start of sought frame              pCkData->SetPos(FrameTable[frame]);           // set chunk pointer to the start of sought frame
907              return this->SamplePos;              return this->SamplePos;
908          }          }
909          else { // not compressed          else { // not compressed
910              unsigned long orderedBytes = SampleCount * this->FrameSize;              file_offset_t orderedBytes = SampleCount * this->FrameSize;
911              unsigned long result = pCkData->SetPos(orderedBytes, Whence);              file_offset_t result = pCkData->SetPos(orderedBytes, Whence);
912              return (result == orderedBytes) ? SampleCount              return (result == orderedBytes) ? SampleCount
913                                              : result / this->FrameSize;                                              : result / this->FrameSize;
914          }          }
# Line 853  namespace { Line 917  namespace {
917      /**      /**
918       * Returns the current position in the sample (in sample points).       * Returns the current position in the sample (in sample points).
919       */       */
920      unsigned long Sample::GetPos() const {      file_offset_t Sample::GetPos() const {
921          if (Compressed) return SamplePos;          if (Compressed) return SamplePos;
922          else            return pCkData->GetPos() / FrameSize;          else            return pCkData->GetPos() / FrameSize;
923      }      }
# Line 892  namespace { Line 956  namespace {
956       * @returns                number of successfully read sample points       * @returns                number of successfully read sample points
957       * @see                    CreateDecompressionBuffer()       * @see                    CreateDecompressionBuffer()
958       */       */
959      unsigned long Sample::ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState,      file_offset_t Sample::ReadAndLoop(void* pBuffer, file_offset_t SampleCount, playback_state_t* pPlaybackState,
960                                        DimensionRegion* pDimRgn, buffer_t* pExternalDecompressionBuffer) {                                        DimensionRegion* pDimRgn, buffer_t* pExternalDecompressionBuffer) {
961          unsigned long samplestoread = SampleCount, totalreadsamples = 0, readsamples, samplestoloopend;          file_offset_t samplestoread = SampleCount, totalreadsamples = 0, readsamples, samplestoloopend;
962          uint8_t* pDst = (uint8_t*) pBuffer;          uint8_t* pDst = (uint8_t*) pBuffer;
963    
964          SetPos(pPlaybackState->position); // recover position from the last time          SetPos(pPlaybackState->position); // recover position from the last time
# Line 932  namespace { Line 996  namespace {
996                                  // reading, swap all sample frames so it reflects                                  // reading, swap all sample frames so it reflects
997                                  // backward playback                                  // backward playback
998    
999                                  unsigned long swapareastart       = totalreadsamples;                                  file_offset_t swapareastart       = totalreadsamples;
1000                                  unsigned long loopoffset          = GetPos() - loop.LoopStart;                                  file_offset_t loopoffset          = GetPos() - loop.LoopStart;
1001                                  unsigned long samplestoreadinloop = Min(samplestoread, loopoffset);                                  file_offset_t samplestoreadinloop = Min(samplestoread, loopoffset);
1002                                  unsigned long reverseplaybackend  = GetPos() - samplestoreadinloop;                                  file_offset_t reverseplaybackend  = GetPos() - samplestoreadinloop;
1003    
1004                                  SetPos(reverseplaybackend);                                  SetPos(reverseplaybackend);
1005    
# Line 983  namespace { Line 1047  namespace {
1047                          // reading, swap all sample frames so it reflects                          // reading, swap all sample frames so it reflects
1048                          // backward playback                          // backward playback
1049    
1050                          unsigned long swapareastart       = totalreadsamples;                          file_offset_t swapareastart       = totalreadsamples;
1051                          unsigned long loopoffset          = GetPos() - loop.LoopStart;                          file_offset_t loopoffset          = GetPos() - loop.LoopStart;
1052                          unsigned long samplestoreadinloop = (this->LoopPlayCount) ? Min(samplestoread, pPlaybackState->loop_cycles_left * loop.LoopLength - loopoffset)                          file_offset_t samplestoreadinloop = (this->LoopPlayCount) ? Min(samplestoread, pPlaybackState->loop_cycles_left * loop.LoopLength - loopoffset)
1053                                                                                    : samplestoread;                                                                                    : samplestoread;
1054                          unsigned long reverseplaybackend  = loop.LoopStart + Abs((loopoffset - samplestoreadinloop) % loop.LoopLength);                          file_offset_t reverseplaybackend  = loop.LoopStart + Abs((loopoffset - samplestoreadinloop) % loop.LoopLength);
1055    
1056                          SetPos(reverseplaybackend);                          SetPos(reverseplaybackend);
1057    
# Line 1067  namespace { Line 1131  namespace {
1131       * @returns            number of successfully read sample points       * @returns            number of successfully read sample points
1132       * @see                SetPos(), CreateDecompressionBuffer()       * @see                SetPos(), CreateDecompressionBuffer()
1133       */       */
1134      unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount, buffer_t* pExternalDecompressionBuffer) {      file_offset_t Sample::Read(void* pBuffer, file_offset_t SampleCount, buffer_t* pExternalDecompressionBuffer) {
1135          if (SampleCount == 0) return 0;          if (SampleCount == 0) return 0;
1136          if (!Compressed) {          if (!Compressed) {
1137              if (BitDepth == 24) {              if (BitDepth == 24) {
# Line 1082  namespace { Line 1146  namespace {
1146          else {          else {
1147              if (this->SamplePos >= this->SamplesTotal) return 0;              if (this->SamplePos >= this->SamplesTotal) return 0;
1148              //TODO: efficiency: maybe we should test for an average compression rate              //TODO: efficiency: maybe we should test for an average compression rate
1149              unsigned long assumedsize      = GuessSize(SampleCount),              file_offset_t assumedsize      = GuessSize(SampleCount),
1150                            remainingbytes   = 0,           // remaining bytes in the local buffer                            remainingbytes   = 0,           // remaining bytes in the local buffer
1151                            remainingsamples = SampleCount,                            remainingsamples = SampleCount,
1152                            copysamples, skipsamples,                            copysamples, skipsamples,
# Line 1105  namespace { Line 1169  namespace {
1169              remainingbytes = pCkData->Read(pSrc, assumedsize, 1);              remainingbytes = pCkData->Read(pSrc, assumedsize, 1);
1170    
1171              while (remainingsamples && remainingbytes) {              while (remainingsamples && remainingbytes) {
1172                  unsigned long framesamples = SamplesPerFrame;                  file_offset_t framesamples = SamplesPerFrame;
1173                  unsigned long framebytes, rightChannelOffset = 0, nextFrameOffset;                  file_offset_t framebytes, rightChannelOffset = 0, nextFrameOffset;
1174    
1175                  int mode_l = *pSrc++, mode_r = 0;                  int mode_l = *pSrc++, mode_r = 0;
1176    
# Line 1256  namespace { Line 1320  namespace {
1320       * @throws gig::Exception if sample is compressed       * @throws gig::Exception if sample is compressed
1321       * @see DLS::LoadSampleData()       * @see DLS::LoadSampleData()
1322       */       */
1323      unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) {      file_offset_t Sample::Write(void* pBuffer, file_offset_t SampleCount) {
1324          if (Compressed) throw gig::Exception("There is no support for writing compressed gig samples (yet)");          if (Compressed) throw gig::Exception("There is no support for writing compressed gig samples (yet)");
1325    
1326          // if this is the first write in this sample, reset the          // if this is the first write in this sample, reset the
# Line 1265  namespace { Line 1329  namespace {
1329              __resetCRC(crc);              __resetCRC(crc);
1330          }          }
1331          if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");          if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");
1332          unsigned long res;          file_offset_t res;
1333          if (BitDepth == 24) {          if (BitDepth == 24) {
1334              res = pCkData->Write(pBuffer, SampleCount * FrameSize, 1) / FrameSize;              res = pCkData->Write(pBuffer, SampleCount * FrameSize, 1) / FrameSize;
1335          } else { // 16 bit          } else { // 16 bit
# Line 1277  namespace { Line 1341  namespace {
1341          // if this is the last write, update the checksum chunk in the          // if this is the last write, update the checksum chunk in the
1342          // file          // file
1343          if (pCkData->GetPos() == pCkData->GetSize()) {          if (pCkData->GetPos() == pCkData->GetSize()) {
1344                __finalizeCRC(crc);
1345              File* pFile = static_cast<File*>(GetParent());              File* pFile = static_cast<File*>(GetParent());
1346              pFile->SetSampleChecksum(this, __encodeCRC(crc));              pFile->SetSampleChecksum(this, crc);
1347          }          }
1348          return res;          return res;
1349      }      }
# Line 1299  namespace { Line 1364  namespace {
1364       * @returns allocated decompression buffer       * @returns allocated decompression buffer
1365       * @see DestroyDecompressionBuffer()       * @see DestroyDecompressionBuffer()
1366       */       */
1367      buffer_t Sample::CreateDecompressionBuffer(unsigned long MaxReadSize) {      buffer_t Sample::CreateDecompressionBuffer(file_offset_t MaxReadSize) {
1368          buffer_t result;          buffer_t result;
1369          const double worstCaseHeaderOverhead =          const double worstCaseHeaderOverhead =
1370                  (256.0 /*frame size*/ + 12.0 /*header*/ + 2.0 /*compression type flag (stereo)*/) / 256.0;                  (256.0 /*frame size*/ + 12.0 /*header*/ + 2.0 /*compression type flag (stereo)*/) / 256.0;
1371          result.Size              = (unsigned long) (double(MaxReadSize) * 3.0 /*(24 Bit)*/ * 2.0 /*stereo*/ * worstCaseHeaderOverhead);          result.Size              = (file_offset_t) (double(MaxReadSize) * 3.0 /*(24 Bit)*/ * 2.0 /*stereo*/ * worstCaseHeaderOverhead);
1372          result.pStart            = new int8_t[result.Size];          result.pStart            = new int8_t[result.Size];
1373          result.NullExtensionSize = 0;          result.NullExtensionSize = 0;
1374          return result;          return result;
# Line 1337  namespace { Line 1402  namespace {
1402          return pGroup;          return pGroup;
1403      }      }
1404    
1405        /**
1406         * Returns the CRC-32 checksum of the sample's raw wave form data at the
1407         * time when this sample's wave form data was modified for the last time
1408         * by calling Write(). This checksum only covers the raw wave form data,
1409         * not any meta informations like i.e. bit depth or loop points. Since
1410         * this method just returns the checksum stored for this sample i.e. when
1411         * the gig file was loaded, this method returns immediately. So it does no
1412         * recalcuation of the checksum with the currently available sample wave
1413         * form data.
1414         *
1415         * @see VerifyWaveData()
1416         */
1417        uint32_t Sample::GetWaveDataCRC32Checksum() {
1418            return crc;
1419        }
1420    
1421        /**
1422         * Checks the integrity of this sample's raw audio wave data. Whenever a
1423         * Sample's raw wave data is intentionally modified (i.e. by calling
1424         * Write() and supplying the new raw audio wave form data) a CRC32 checksum
1425         * is calculated and stored/updated for this sample, along to the sample's
1426         * meta informations.
1427         *
1428         * Now by calling this method the current raw audio wave data is checked
1429         * against the already stored CRC32 check sum in order to check whether the
1430         * sample data had been damaged unintentionally for some reason. Since by
1431         * calling this method always the entire raw audio wave data has to be
1432         * read, verifying all samples this way may take a long time accordingly.
1433         * And that's also the reason why the sample integrity is not checked by
1434         * default whenever a gig file is loaded. So this method must be called
1435         * explicitly to fulfill this task.
1436         *
1437         * @param pActually - (optional) if provided, will be set to the actually
1438         *                    calculated checksum of the current raw wave form data,
1439         *                    you can get the expected checksum instead by calling
1440         *                    GetWaveDataCRC32Checksum()
1441         * @returns true if sample is OK or false if the sample is damaged
1442         * @throws Exception if no checksum had been stored to disk for this
1443         *         sample yet, or on I/O issues
1444         * @see GetWaveDataCRC32Checksum()
1445         */
1446        bool Sample::VerifyWaveData(uint32_t* pActually) {
1447            //File* pFile = static_cast<File*>(GetParent());
1448            uint32_t crc = CalculateWaveDataChecksum();
1449            if (pActually) *pActually = crc;
1450            return crc == this->crc;
1451        }
1452    
1453        uint32_t Sample::CalculateWaveDataChecksum() {
1454            const size_t sz = 20*1024; // 20kB buffer size
1455            std::vector<uint8_t> buffer(sz);
1456            buffer.resize(sz);
1457    
1458            const size_t n = sz / FrameSize;
1459            SetPos(0);
1460            uint32_t crc = 0;
1461            __resetCRC(crc);
1462            while (true) {
1463                file_offset_t nRead = Read(&buffer[0], n);
1464                if (nRead <= 0) break;
1465                __calculateCRC(&buffer[0], nRead * FrameSize, crc);
1466            }
1467            __finalizeCRC(crc);
1468            return crc;
1469        }
1470    
1471      Sample::~Sample() {      Sample::~Sample() {
1472          Instances--;          Instances--;
1473          if (!Instances && InternalDecompressionBuffer.Size) {          if (!Instances && InternalDecompressionBuffer.Size) {
# Line 1353  namespace { Line 1484  namespace {
1484  // *************** DimensionRegion ***************  // *************** DimensionRegion ***************
1485  // *  // *
1486    
1487      uint                               DimensionRegion::Instances       = 0;      size_t                             DimensionRegion::Instances       = 0;
1488      DimensionRegion::VelocityTableMap* DimensionRegion::pVelocityTables = NULL;      DimensionRegion::VelocityTableMap* DimensionRegion::pVelocityTables = NULL;
1489    
1490      DimensionRegion::DimensionRegion(Region* pParent, RIFF::List* _3ewl) : DLS::Sampler(_3ewl) {      DimensionRegion::DimensionRegion(Region* pParent, RIFF::List* _3ewl) : DLS::Sampler(_3ewl) {
# Line 1547  namespace { Line 1678  namespace {
1678              EG2Attack                       = 0.0;              EG2Attack                       = 0.0;
1679              EG2Decay1                       = 0.005;              EG2Decay1                       = 0.005;
1680              EG2Sustain                      = 1000;              EG2Sustain                      = 1000;
1681              EG2Release                      = 0.3;              EG2Release                      = 60;
1682              LFO2ControlDepth                = 0;              LFO2ControlDepth                = 0;
1683              LFO2Frequency                   = 1.0;              LFO2Frequency                   = 1.0;
1684              LFO2InternalDepth               = 0;              LFO2InternalDepth               = 0;
# Line 1601  namespace { Line 1732  namespace {
1732              VCFType                         = vcf_type_lowpass;              VCFType                         = vcf_type_lowpass;
1733              memset(DimensionUpperLimits, 127, 8);              memset(DimensionUpperLimits, 127, 8);
1734          }          }
1735            // format extension for EG behavior options, these will *NOT* work with
1736            // Gigasampler/GigaStudio !
1737            RIFF::Chunk* lsde = _3ewl->GetSubChunk(CHUNK_ID_LSDE);
1738            if (lsde) {
1739                eg_opt_t* pEGOpts[2] = { &EG1Options, &EG2Options };
1740                for (int i = 0; i < 2; ++i) {
1741                    unsigned char byte = lsde->ReadUint8();
1742                    pEGOpts[i]->AttackCancel     = byte & 1;
1743                    pEGOpts[i]->AttackHoldCancel = byte & (1 << 1);
1744                    pEGOpts[i]->Decay1Cancel     = byte & (1 << 2);
1745                    pEGOpts[i]->Decay2Cancel     = byte & (1 << 3);
1746                    pEGOpts[i]->ReleaseCancel    = byte & (1 << 4);
1747                }
1748            }
1749    
1750          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,
1751                                                       VelocityResponseDepth,                                                       VelocityResponseDepth,
# Line 1706  namespace { Line 1851  namespace {
1851          }          }
1852      }      }
1853    
1854        void DimensionRegion::serialize(Serialization::Archive* archive) {
1855            // in case this class will become backward incompatible one day,
1856            // then set a version and minimum version for this class like:
1857            //archive->setVersion(*this, 2);
1858            //archive->setMinVersion(*this, 1);
1859    
1860            SRLZ(VelocityUpperLimit);
1861            SRLZ(EG1PreAttack);
1862            SRLZ(EG1Attack);
1863            SRLZ(EG1Decay1);
1864            SRLZ(EG1Decay2);
1865            SRLZ(EG1InfiniteSustain);
1866            SRLZ(EG1Sustain);
1867            SRLZ(EG1Release);
1868            SRLZ(EG1Hold);
1869            SRLZ(EG1Controller);
1870            SRLZ(EG1ControllerInvert);
1871            SRLZ(EG1ControllerAttackInfluence);
1872            SRLZ(EG1ControllerDecayInfluence);
1873            SRLZ(EG1ControllerReleaseInfluence);
1874            SRLZ(LFO1Frequency);
1875            SRLZ(LFO1InternalDepth);
1876            SRLZ(LFO1ControlDepth);
1877            SRLZ(LFO1Controller);
1878            SRLZ(LFO1FlipPhase);
1879            SRLZ(LFO1Sync);
1880            SRLZ(EG2PreAttack);
1881            SRLZ(EG2Attack);
1882            SRLZ(EG2Decay1);
1883            SRLZ(EG2Decay2);
1884            SRLZ(EG2InfiniteSustain);
1885            SRLZ(EG2Sustain);
1886            SRLZ(EG2Release);
1887            SRLZ(EG2Controller);
1888            SRLZ(EG2ControllerInvert);
1889            SRLZ(EG2ControllerAttackInfluence);
1890            SRLZ(EG2ControllerDecayInfluence);
1891            SRLZ(EG2ControllerReleaseInfluence);
1892            SRLZ(LFO2Frequency);
1893            SRLZ(LFO2InternalDepth);
1894            SRLZ(LFO2ControlDepth);
1895            SRLZ(LFO2Controller);
1896            SRLZ(LFO2FlipPhase);
1897            SRLZ(LFO2Sync);
1898            SRLZ(EG3Attack);
1899            SRLZ(EG3Depth);
1900            SRLZ(LFO3Frequency);
1901            SRLZ(LFO3InternalDepth);
1902            SRLZ(LFO3ControlDepth);
1903            SRLZ(LFO3Controller);
1904            SRLZ(LFO3Sync);
1905            SRLZ(VCFEnabled);
1906            SRLZ(VCFType);
1907            SRLZ(VCFCutoffController);
1908            SRLZ(VCFCutoffControllerInvert);
1909            SRLZ(VCFCutoff);
1910            SRLZ(VCFVelocityCurve);
1911            SRLZ(VCFVelocityScale);
1912            SRLZ(VCFVelocityDynamicRange);
1913            SRLZ(VCFResonance);
1914            SRLZ(VCFResonanceDynamic);
1915            SRLZ(VCFResonanceController);
1916            SRLZ(VCFKeyboardTracking);
1917            SRLZ(VCFKeyboardTrackingBreakpoint);
1918            SRLZ(VelocityResponseCurve);
1919            SRLZ(VelocityResponseDepth);
1920            SRLZ(VelocityResponseCurveScaling);
1921            SRLZ(ReleaseVelocityResponseCurve);
1922            SRLZ(ReleaseVelocityResponseDepth);
1923            SRLZ(ReleaseTriggerDecay);
1924            SRLZ(Crossfade);
1925            SRLZ(PitchTrack);
1926            SRLZ(DimensionBypass);
1927            SRLZ(Pan);
1928            SRLZ(SelfMask);
1929            SRLZ(AttenuationController);
1930            SRLZ(InvertAttenuationController);
1931            SRLZ(AttenuationControllerThreshold);
1932            SRLZ(ChannelOffset);
1933            SRLZ(SustainDefeat);
1934            SRLZ(MSDecode);
1935            //SRLZ(SampleStartOffset);
1936            SRLZ(SampleAttenuation);
1937            SRLZ(EG1Options);
1938            SRLZ(EG2Options);
1939    
1940            // derived attributes from DLS::Sampler
1941            SRLZ(FineTune);
1942            SRLZ(Gain);
1943        }
1944    
1945      /**      /**
1946       * Updates the respective member variable and updates @c SampleAttenuation       * Updates the respective member variable and updates @c SampleAttenuation
1947       * which depends on this value.       * which depends on this value.
# Line 1746  namespace { Line 1982  namespace {
1982    
1983          // update '3ewa' chunk with DimensionRegion's current settings          // update '3ewa' chunk with DimensionRegion's current settings
1984    
1985          const uint32_t chunksize = _3ewa->GetNewSize();          const uint32_t chunksize = (uint32_t) _3ewa->GetNewSize();
1986          store32(&pData[0], chunksize); // unknown, always chunk size?          store32(&pData[0], chunksize); // unknown, always chunk size?
1987    
1988          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);
# Line 2006  namespace { Line 2242  namespace {
2242          if (chunksize >= 148) {          if (chunksize >= 148) {
2243              memcpy(&pData[140], DimensionUpperLimits, 8);              memcpy(&pData[140], DimensionUpperLimits, 8);
2244          }          }
2245    
2246            // format extension for EG behavior options, these will *NOT* work with
2247            // Gigasampler/GigaStudio !
2248            RIFF::Chunk* lsde = pParentList->GetSubChunk(CHUNK_ID_LSDE);
2249            if (!lsde) {
2250                // only add this "LSDE" chunk if the EG options do not match the
2251                // default EG behavior
2252                eg_opt_t defaultOpt;
2253                if (memcmp(&EG1Options, &defaultOpt, sizeof(eg_opt_t)) ||
2254                    memcmp(&EG2Options, &defaultOpt, sizeof(eg_opt_t)))
2255                {
2256                    lsde = pParentList->AddSubChunk(CHUNK_ID_LSDE, 2);
2257                    // move LSDE chunk to the end of parent list
2258                    pParentList->MoveSubChunk(lsde, (RIFF::Chunk*)NULL);
2259                }
2260            }
2261            if (lsde) {
2262                unsigned char* pData = (unsigned char*) lsde->LoadChunkData();
2263                eg_opt_t* pEGOpts[2] = { &EG1Options, &EG2Options };
2264                for (int i = 0; i < 2; ++i) {
2265                    pData[i] =
2266                        (pEGOpts[i]->AttackCancel     ? 1 : 0) |
2267                        (pEGOpts[i]->AttackHoldCancel ? (1<<1) : 0) |
2268                        (pEGOpts[i]->Decay1Cancel     ? (1<<2) : 0) |
2269                        (pEGOpts[i]->Decay2Cancel     ? (1<<3) : 0) |
2270                        (pEGOpts[i]->ReleaseCancel    ? (1<<4) : 0);
2271                }
2272            }
2273      }      }
2274    
2275      double* DimensionRegion::GetReleaseVelocityTable(curve_type_t releaseVelocityResponseCurve, uint8_t releaseVelocityResponseDepth) {      double* DimensionRegion::GetReleaseVelocityTable(curve_type_t releaseVelocityResponseCurve, uint8_t releaseVelocityResponseDepth) {
# Line 2045  namespace { Line 2309  namespace {
2309      // get the corresponding velocity table from the table map or create & calculate that table if it doesn't exist yet      // get the corresponding velocity table from the table map or create & calculate that table if it doesn't exist yet
2310      double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling)      double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling)
2311      {      {
2312            // sanity check input parameters
2313            // (fallback to some default parameters on ill input)
2314            switch (curveType) {
2315                case curve_type_nonlinear:
2316                case curve_type_linear:
2317                    if (depth > 4) {
2318                        printf("Warning: Invalid depth (0x%x) for velocity curve type (0x%x).\n", depth, curveType);
2319                        depth   = 0;
2320                        scaling = 0;
2321                    }
2322                    break;
2323                case curve_type_special:
2324                    if (depth > 5) {
2325                        printf("Warning: Invalid depth (0x%x) for velocity curve type 'special'.\n", depth);
2326                        depth   = 0;
2327                        scaling = 0;
2328                    }
2329                    break;
2330                case curve_type_unknown:
2331                default:
2332                    printf("Warning: Unknown velocity curve type (0x%x).\n", curveType);
2333                    curveType = curve_type_linear;
2334                    depth     = 0;
2335                    scaling   = 0;
2336                    break;
2337            }
2338    
2339          double* table;          double* table;
2340          uint32_t tableKey = (curveType<<16) | (depth<<8) | scaling;          uint32_t tableKey = (curveType<<16) | (depth<<8) | scaling;
2341          if (pVelocityTables->count(tableKey)) { // if key exists          if (pVelocityTables->count(tableKey)) { // if key exists
# Line 2420  namespace { Line 2711  namespace {
2711    
2712              // unknown controller type              // unknown controller type
2713              default:              default:
2714                  throw gig::Exception("Unknown leverage controller type.");                  decodedcontroller.type = leverage_ctrl_t::type_none;
2715                    decodedcontroller.controller_number = 0;
2716                    printf("Warning: Unknown leverage controller type (0x%x).\n", EncodedController);
2717                    break;
2718          }          }
2719          return decodedcontroller;          return decodedcontroller;
2720      }      }
# Line 2967  namespace { Line 3261  namespace {
3261              if (file->GetAutoLoad()) {              if (file->GetAutoLoad()) {
3262                  for (uint i = 0; i < DimensionRegions; i++) {                  for (uint i = 0; i < DimensionRegions; i++) {
3263                      uint32_t wavepoolindex = _3lnk->ReadUint32();                      uint32_t wavepoolindex = _3lnk->ReadUint32();
3264                      if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);                      if (file->pWavePoolTable && pDimensionRegions[i])
3265                            pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);
3266                  }                  }
3267                  GetSample(); // load global region sample reference                  GetSample(); // load global region sample reference
3268              }              }
# Line 3102  namespace { Line 3397  namespace {
3397          int step = 1;          int step = 1;
3398          for (int i = 0 ; i < veldim ; i++) step <<= pDimensionDefinitions[i].bits;          for (int i = 0 ; i < veldim ; i++) step <<= pDimensionDefinitions[i].bits;
3399          int skipveldim = (step << pDimensionDefinitions[veldim].bits) - step;          int skipveldim = (step << pDimensionDefinitions[veldim].bits) - step;
         int end = step * pDimensionDefinitions[veldim].zones;  
3400    
3401          // loop through all dimension regions for all dimensions except the velocity dimension          // loop through all dimension regions for all dimensions except the velocity dimension
3402          int dim[8] = { 0 };          int dim[8] = { 0 };
3403          for (int i = 0 ; i < DimensionRegions ; i++) {          for (int i = 0 ; i < DimensionRegions ; i++) {
3404                const int end = i + step * pDimensionDefinitions[veldim].zones;
3405    
3406                // create a velocity table for all cases where the velocity zone is zero
3407              if (pDimensionRegions[i]->DimensionUpperLimits[veldim] ||              if (pDimensionRegions[i]->DimensionUpperLimits[veldim] ||
3408                  pDimensionRegions[i]->VelocityUpperLimit) {                  pDimensionRegions[i]->VelocityUpperLimit) {
3409                  // create the velocity table                  // create the velocity table
# Line 3138  namespace { Line 3434  namespace {
3434                  }                  }
3435              }              }
3436    
3437                // jump to the next case where the velocity zone is zero
3438              int j;              int j;
3439              int shift = 0;              int shift = 0;
3440              for (j = 0 ; j < Dimensions ; j++) {              for (j = 0 ; j < Dimensions ; j++) {
# Line 3712  namespace { Line 4009  namespace {
4009      DimensionRegion* Region::GetDimensionRegionByValue(const uint DimValues[8]) {      DimensionRegion* Region::GetDimensionRegionByValue(const uint DimValues[8]) {
4010          uint8_t bits;          uint8_t bits;
4011          int veldim = -1;          int veldim = -1;
4012          int velbitpos;          int velbitpos = 0;
4013          int bitpos = 0;          int bitpos = 0;
4014          int dimregidx = 0;          int dimregidx = 0;
4015          for (uint i = 0; i < Dimensions; i++) {          for (uint i = 0; i < Dimensions; i++) {
# Line 3761  namespace { Line 4058  namespace {
4058      int Region::GetDimensionRegionIndexByValue(const uint DimValues[8]) {      int Region::GetDimensionRegionIndexByValue(const uint DimValues[8]) {
4059          uint8_t bits;          uint8_t bits;
4060          int veldim = -1;          int veldim = -1;
4061          int velbitpos;          int velbitpos = 0;
4062          int bitpos = 0;          int bitpos = 0;
4063          int dimregidx = 0;          int dimregidx = 0;
4064          for (uint i = 0; i < Dimensions; i++) {          for (uint i = 0; i < Dimensions; i++) {
# Line 3846  namespace { Line 4143  namespace {
4143          if ((int32_t)WavePoolTableIndex == -1) return NULL;          if ((int32_t)WavePoolTableIndex == -1) return NULL;
4144          File* file = (File*) GetParent()->GetParent();          File* file = (File*) GetParent()->GetParent();
4145          if (!file->pWavePoolTable) return NULL;          if (!file->pWavePoolTable) return NULL;
4146          unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex];          if (WavePoolTableIndex + 1 > file->WavePoolCount) return NULL;
4147          unsigned long soughtfileno = file->pWavePoolTableHi[WavePoolTableIndex];          // for new files or files >= 2 GB use 64 bit wave pool offsets
4148          Sample* sample = file->GetFirstSample(pProgress);          if (file->pRIFF->IsNew() || (file->pRIFF->GetCurrentFileSize() >> 31)) {
4149          while (sample) {              // use 64 bit wave pool offsets (treating this as large file)
4150              if (sample->ulWavePoolOffset == soughtoffset &&              uint64_t soughtoffset =
4151                  sample->FileNo == soughtfileno) return static_cast<gig::Sample*>(sample);                  uint64_t(file->pWavePoolTable[WavePoolTableIndex]) |
4152              sample = file->GetNextSample();                  uint64_t(file->pWavePoolTableHi[WavePoolTableIndex]) << 32;
4153                Sample* sample = file->GetFirstSample(pProgress);
4154                while (sample) {
4155                    if (sample->ullWavePoolOffset == soughtoffset)
4156                        return static_cast<gig::Sample*>(sample);
4157                    sample = file->GetNextSample();
4158                }
4159            } else {
4160                // use extension files and 32 bit wave pool offsets
4161                file_offset_t soughtoffset = file->pWavePoolTable[WavePoolTableIndex];
4162                file_offset_t soughtfileno = file->pWavePoolTableHi[WavePoolTableIndex];
4163                Sample* sample = file->GetFirstSample(pProgress);
4164                while (sample) {
4165                    if (sample->ullWavePoolOffset == soughtoffset &&
4166                        sample->FileNo == soughtfileno) return static_cast<gig::Sample*>(sample);
4167                    sample = file->GetNextSample();
4168                }
4169          }          }
4170          return NULL;          return NULL;
4171      }      }
# Line 4095  namespace { Line 4408  namespace {
4408              // to handle potential future extensions of the header              // to handle potential future extensions of the header
4409              ckScri->SetPos(sizeof(int32_t) + headerSize);              ckScri->SetPos(sizeof(int32_t) + headerSize);
4410              // read actual script data              // read actual script data
4411              uint32_t scriptSize = ckScri->GetSize() - ckScri->GetPos();              uint32_t scriptSize = uint32_t(ckScri->GetSize() - ckScri->GetPos());
4412              data.resize(scriptSize);              data.resize(scriptSize);
4413              for (int i = 0; i < scriptSize; ++i)              for (int i = 0; i < scriptSize; ++i)
4414                  data[i] = ckScri->ReadUint8();                  data[i] = ckScri->ReadUint8();
# Line 4146  namespace { Line 4459  namespace {
4459          // recalculate CRC32 check sum          // recalculate CRC32 check sum
4460          __resetCRC(crc);          __resetCRC(crc);
4461          __calculateCRC(&data[0], data.size(), crc);          __calculateCRC(&data[0], data.size(), crc);
4462          __encodeCRC(crc);          __finalizeCRC(crc);
4463          // make sure chunk exists and has the required size          // make sure chunk exists and has the required size
4464          const int chunkSize = 7*sizeof(int32_t) + Name.size() + data.size();          const file_offset_t chunkSize = (file_offset_t) 7*sizeof(int32_t) + Name.size() + data.size();
4465          if (!pChunk) pChunk = pGroup->pList->AddSubChunk(CHUNK_ID_SCRI, chunkSize);          if (!pChunk) pChunk = pGroup->pList->AddSubChunk(CHUNK_ID_SCRI, chunkSize);
4466          else pChunk->Resize(chunkSize);          else pChunk->Resize(chunkSize);
4467          // fill the chunk data to be written to disk          // fill the chunk data to be written to disk
4468          uint8_t* pData = (uint8_t*) pChunk->LoadChunkData();          uint8_t* pData = (uint8_t*) pChunk->LoadChunkData();
4469          int pos = 0;          int pos = 0;
4470          store32(&pData[pos], 6*sizeof(int32_t) + Name.size()); // total header size          store32(&pData[pos], uint32_t(6*sizeof(int32_t) + Name.size())); // total header size
4471          pos += sizeof(int32_t);          pos += sizeof(int32_t);
4472          store32(&pData[pos], Compression);          store32(&pData[pos], Compression);
4473          pos += sizeof(int32_t);          pos += sizeof(int32_t);
# Line 4166  namespace { Line 4479  namespace {
4479          pos += sizeof(int32_t);          pos += sizeof(int32_t);
4480          store32(&pData[pos], crc);          store32(&pData[pos], crc);
4481          pos += sizeof(int32_t);          pos += sizeof(int32_t);
4482          store32(&pData[pos], Name.size());          store32(&pData[pos], (uint32_t) Name.size());
4483          pos += sizeof(int32_t);          pos += sizeof(int32_t);
4484          for (int i = 0; i < Name.size(); ++i, ++pos)          for (int i = 0; i < Name.size(); ++i, ++pos)
4485              pData[pos] = Name[i];              pData[pos] = Name[i];
# Line 4181  namespace { Line 4494  namespace {
4494       * @param pGroup - script's new group       * @param pGroup - script's new group
4495       */       */
4496      void Script::SetGroup(ScriptGroup* pGroup) {      void Script::SetGroup(ScriptGroup* pGroup) {
4497          if (this->pGroup = pGroup) return;          if (this->pGroup == pGroup) return;
4498          if (pChunk)          if (pChunk)
4499              pChunk->GetParent()->MoveSubChunk(pChunk, pGroup->pList);              pChunk->GetParent()->MoveSubChunk(pChunk, pGroup->pList);
4500          this->pGroup = pGroup;          this->pGroup = pGroup;
# Line 4197  namespace { Line 4510  namespace {
4510          return pGroup;          return pGroup;
4511      }      }
4512    
4513        /**
4514         * Make a (semi) deep copy of the Script object given by @a orig
4515         * and assign it to this object. Note: the ScriptGroup this Script
4516         * object belongs to remains untouched by this call.
4517         *
4518         * @param orig - original Script object to be copied from
4519         */
4520        void Script::CopyAssign(const Script* orig) {
4521            Name        = orig->Name;
4522            Compression = orig->Compression;
4523            Encoding    = orig->Encoding;
4524            Language    = orig->Language;
4525            Bypass      = orig->Bypass;
4526            data        = orig->data;
4527        }
4528    
4529      void Script::RemoveAllScriptReferences() {      void Script::RemoveAllScriptReferences() {
4530          File* pFile = pGroup->pFile;          File* pFile = pGroup->pFile;
4531          for (int i = 0; pFile->GetInstrument(i); ++i) {          for (int i = 0; pFile->GetInstrument(i); ++i) {
# Line 4343  namespace { Line 4672  namespace {
4672          EffectSend = 0;          EffectSend = 0;
4673          Attenuation = 0;          Attenuation = 0;
4674          FineTune = 0;          FineTune = 0;
4675          PitchbendRange = 0;          PitchbendRange = 2;
4676          PianoReleaseMode = false;          PianoReleaseMode = false;
4677          DimensionKeyRange.low = 0;          DimensionKeyRange.low = 0;
4678          DimensionKeyRange.high = 0;          DimensionKeyRange.high = 0;
# Line 4441  namespace { Line 4770  namespace {
4770          RegionList::iterator end  = pRegions->end();          RegionList::iterator end  = pRegions->end();
4771          for (; iter != end; ++iter) {          for (; iter != end; ++iter) {
4772              gig::Region* pRegion = static_cast<gig::Region*>(*iter);              gig::Region* pRegion = static_cast<gig::Region*>(*iter);
4773              for (int iKey = pRegion->KeyRange.low; iKey <= pRegion->KeyRange.high; iKey++) {              const int low  = std::max(int(pRegion->KeyRange.low), 0);
4774                const int high = std::min(int(pRegion->KeyRange.high), 127);
4775                for (int iKey = low; iKey <= high; iKey++) {
4776                  RegionKeyTable[iKey] = pRegion;                  RegionKeyTable[iKey] = pRegion;
4777              }              }
4778          }          }
# Line 4518  namespace { Line 4849  namespace {
4849    
4850             RIFF::List* lst3LS = pCkInstrument->GetSubList(LIST_TYPE_3LS);             RIFF::List* lst3LS = pCkInstrument->GetSubList(LIST_TYPE_3LS);
4851             if (!lst3LS) lst3LS = pCkInstrument->AddSubList(LIST_TYPE_3LS);             if (!lst3LS) lst3LS = pCkInstrument->AddSubList(LIST_TYPE_3LS);
4852             const int slotCount = pScriptRefs->size();             const int slotCount = (int) pScriptRefs->size();
4853             const int headerSize = 3 * sizeof(uint32_t);             const int headerSize = 3 * sizeof(uint32_t);
4854             const int slotSize  = 2 * sizeof(uint32_t);             const int slotSize  = 2 * sizeof(uint32_t);
4855             const int totalChunkSize = headerSize + slotCount * slotSize;             const int totalChunkSize = headerSize + slotCount * slotSize;
# Line 4554  namespace { Line 4885  namespace {
4885         if (pScriptRefs && pScriptRefs->size() > 0) {         if (pScriptRefs && pScriptRefs->size() > 0) {
4886             RIFF::List* lst3LS = pCkInstrument->GetSubList(LIST_TYPE_3LS);             RIFF::List* lst3LS = pCkInstrument->GetSubList(LIST_TYPE_3LS);
4887             RIFF::Chunk* ckSCSL = lst3LS->GetSubChunk(CHUNK_ID_SCSL);             RIFF::Chunk* ckSCSL = lst3LS->GetSubChunk(CHUNK_ID_SCSL);
4888             const int slotCount = pScriptRefs->size();             const int slotCount = (int) pScriptRefs->size();
4889             const int headerSize = 3 * sizeof(uint32_t);             const int headerSize = 3 * sizeof(uint32_t);
4890             ckSCSL->SetPos(headerSize);             ckSCSL->SetPos(headerSize);
4891             for (int i = 0; i < slotCount; ++i) {             for (int i = 0; i < slotCount; ++i) {
4892                 uint32_t fileOffset =                 uint32_t fileOffset = uint32_t(
4893                      (*pScriptRefs)[i].script->pChunk->GetFilePos() -                      (*pScriptRefs)[i].script->pChunk->GetFilePos() -
4894                      (*pScriptRefs)[i].script->pChunk->GetPos() -                      (*pScriptRefs)[i].script->pChunk->GetPos() -
4895                      CHUNK_HEADER_SIZE;                      CHUNK_HEADER_SIZE(ckSCSL->GetFile()->GetFileOffsetSize())
4896                   );
4897                 ckSCSL->WriteUint32(&fileOffset);                 ckSCSL->WriteUint32(&fileOffset);
4898                 // jump over flags entry (containing the bypass flag)                 // jump over flags entry (containing the bypass flag)
4899                 ckSCSL->SetPos(sizeof(uint32_t), RIFF::stream_curpos);                 ckSCSL->SetPos(sizeof(uint32_t), RIFF::stream_curpos);
# Line 4621  namespace { Line 4953  namespace {
4953          RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN);          RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN);
4954          Region* pNewRegion = new Region(this, rgn);          Region* pNewRegion = new Region(this, rgn);
4955          pRegions->push_back(pNewRegion);          pRegions->push_back(pNewRegion);
4956          Regions = pRegions->size();          Regions = (uint32_t) pRegions->size();
4957          // update Region key table for fast lookup          // update Region key table for fast lookup
4958          UpdateRegionKeyTable();          UpdateRegionKeyTable();
4959          // done          // done
# Line 4673  namespace { Line 5005  namespace {
5005    
5006          // move this instrument within the instrument list          // move this instrument within the instrument list
5007          {          {
5008              DLS::File::InstrumentList& list = *pFile->pInstruments;              File::InstrumentList& list = *pFile->pInstruments;
5009    
5010              DLS::File::InstrumentList::iterator itFrom =              File::InstrumentList::iterator itFrom =
5011                  std::find(list.begin(), list.end(), static_cast<DLS::Instrument*>(this));                  std::find(list.begin(), list.end(), static_cast<DLS::Instrument*>(this));
5012    
5013              DLS::File::InstrumentList::iterator itTo =              File::InstrumentList::iterator itTo =
5014                  std::find(list.begin(), list.end(), static_cast<DLS::Instrument*>(dst));                  std::find(list.begin(), list.end(), static_cast<DLS::Instrument*>(dst));
5015    
5016              list.splice(itTo, list, itFrom);              list.splice(itTo, list, itFrom);
# Line 4688  namespace { Line 5020  namespace {
5020          RIFF::List* lstCkInstruments = pFile->pRIFF->GetSubList(LIST_TYPE_LINS);          RIFF::List* lstCkInstruments = pFile->pRIFF->GetSubList(LIST_TYPE_LINS);
5021          lstCkInstruments->MoveSubChunk(          lstCkInstruments->MoveSubChunk(
5022              this->pCkInstrument,              this->pCkInstrument,
5023              (dst) ? dst->pCkInstrument : NULL              (RIFF::Chunk*) ((dst) ? dst->pCkInstrument : NULL)
5024          );          );
5025      }      }
5026    
# Line 4767  namespace { Line 5099  namespace {
5099                  for (uint s = 0; group->GetScript(s); ++s) {                  for (uint s = 0; group->GetScript(s); ++s) {
5100                      Script* script = group->GetScript(s);                      Script* script = group->GetScript(s);
5101                      if (script->pChunk) {                      if (script->pChunk) {
5102                          uint32_t offset = script->pChunk->GetFilePos() -                          uint32_t offset = uint32_t(
5103                                            script->pChunk->GetPos() -                              script->pChunk->GetFilePos() -
5104                                            CHUNK_HEADER_SIZE;                              script->pChunk->GetPos() -
5105                                CHUNK_HEADER_SIZE(script->pChunk->GetFile()->GetFileOffsetSize())
5106                            );
5107                          if (offset == soughtOffset)                          if (offset == soughtOffset)
5108                          {                          {
5109                              _ScriptPooolRef ref;                              _ScriptPooolRef ref;
# Line 4894  namespace { Line 5228  namespace {
5228       */       */
5229      void Instrument::RemoveScript(Script* pScript) {      void Instrument::RemoveScript(Script* pScript) {
5230          LoadScripts();          LoadScripts();
5231          for (int i = pScriptRefs->size() - 1; i >= 0; --i) {          for (ssize_t i = pScriptRefs->size() - 1; i >= 0; --i) {
5232              if ((*pScriptRefs)[i].script == pScript) {              if ((*pScriptRefs)[i].script == pScript) {
5233                  pScriptRefs->erase( pScriptRefs->begin() + i );                  pScriptRefs->erase( pScriptRefs->begin() + i );
5234              }              }
# Line 4916  namespace { Line 5250  namespace {
5250       * gigedit.       * gigedit.
5251       */       */
5252      uint Instrument::ScriptSlotCount() const {      uint Instrument::ScriptSlotCount() const {
5253          return pScriptRefs ? pScriptRefs->size() : scriptPoolFileOffsets.size();          return uint(pScriptRefs ? pScriptRefs->size() : scriptPoolFileOffsets.size());
5254      }      }
5255    
5256      /** @brief Whether script execution shall be skipped.      /** @brief Whether script execution shall be skipped.
# Line 5332  namespace { Line 5666  namespace {
5666          int iTotalSamples = WavePoolCount;          int iTotalSamples = WavePoolCount;
5667    
5668          // check if samples should be loaded from extension files          // check if samples should be loaded from extension files
5669            // (only for old gig files < 2 GB)
5670          int lastFileNo = 0;          int lastFileNo = 0;
5671          for (int i = 0 ; i < WavePoolCount ; i++) {          if (!file->IsNew() && !(file->GetCurrentFileSize() >> 31)) {
5672              if (pWavePoolTableHi[i] > lastFileNo) lastFileNo = pWavePoolTableHi[i];              for (int i = 0 ; i < WavePoolCount ; i++) {
5673                    if (pWavePoolTableHi[i] > lastFileNo) lastFileNo = pWavePoolTableHi[i];
5674                }
5675          }          }
5676          String name(pRIFF->GetFileName());          String name(pRIFF->GetFileName());
5677          int nameLen = name.length();          int nameLen = (int) name.length();
5678          char suffix[6];          char suffix[6];
5679          if (nameLen > 4 && name.substr(nameLen - 4) == ".gig") nameLen -= 4;          if (nameLen > 4 && name.substr(nameLen - 4) == ".gig") nameLen -= 4;
5680    
5681          for (int fileNo = 0 ; ; ) {          for (int fileNo = 0 ; ; ) {
5682              RIFF::List* wvpl = file->GetSubList(LIST_TYPE_WVPL);              RIFF::List* wvpl = file->GetSubList(LIST_TYPE_WVPL);
5683              if (wvpl) {              if (wvpl) {
5684                  unsigned long wvplFileOffset = wvpl->GetFilePos();                  file_offset_t wvplFileOffset = wvpl->GetFilePos();
5685                  RIFF::List* wave = wvpl->GetFirstSubList();                  RIFF::List* wave = wvpl->GetFirstSubList();
5686                  while (wave) {                  while (wave) {
5687                      if (wave->GetListType() == LIST_TYPE_WAVE) {                      if (wave->GetListType() == LIST_TYPE_WAVE) {
# Line 5352  namespace { Line 5689  namespace {
5689                          const float subprogress = (float) iSampleIndex / (float) iTotalSamples;                          const float subprogress = (float) iSampleIndex / (float) iTotalSamples;
5690                          __notify_progress(pProgress, subprogress);                          __notify_progress(pProgress, subprogress);
5691    
5692                          unsigned long waveFileOffset = wave->GetFilePos();                          file_offset_t waveFileOffset = wave->GetFilePos();
5693                          pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset, fileNo));                          pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset, fileNo, iSampleIndex));
5694    
5695                          iSampleIndex++;                          iSampleIndex++;
5696                      }                      }
# Line 5506  namespace { Line 5843  namespace {
5843              mGroups[pFile->GetSample(i)->GetGroup()]->AddSample(s);              mGroups[pFile->GetSample(i)->GetGroup()]->AddSample(s);
5844              mSamples[pFile->GetSample(i)] = s;              mSamples[pFile->GetSample(i)] = s;
5845          }          }
5846            
5847            // clone script groups and their scripts
5848            for (int iGroup = 0; pFile->GetScriptGroup(iGroup); ++iGroup) {
5849                ScriptGroup* sg = pFile->GetScriptGroup(iGroup);
5850                ScriptGroup* dg = AddScriptGroup();
5851                dg->Name = "COPY" + ToString(iCallCount) + "_" + sg->Name;
5852                for (int iScript = 0; sg->GetScript(iScript); ++iScript) {
5853                    Script* ss = sg->GetScript(iScript);
5854                    Script* ds = dg->AddScript();
5855                    ds->CopyAssign(ss);
5856                }
5857            }
5858    
5859          //BUG: For some reason this method only works with this additional          //BUG: For some reason this method only works with this additional
5860          //     Save() call in between here.          //     Save() call in between here.
5861          //          //
# Line 5591  namespace { Line 5940  namespace {
5940          if (!_3crc) return;          if (!_3crc) return;
5941    
5942          // get the index of the sample          // get the index of the sample
5943          int iWaveIndex = -1;          int iWaveIndex = GetWaveTableIndexOf(pSample);
         File::SampleList::iterator iter = pSamples->begin();  
         File::SampleList::iterator end  = pSamples->end();  
         for (int index = 0; iter != end; ++iter, ++index) {  
             if (*iter == pSample) {  
                 iWaveIndex = index;  
                 break;  
             }  
         }  
5944          if (iWaveIndex < 0) throw gig::Exception("Could not update crc, could not find sample");          if (iWaveIndex < 0) throw gig::Exception("Could not update crc, could not find sample");
5945    
5946          // write the CRC-32 checksum to disk          // write the CRC-32 checksum to disk
5947          _3crc->SetPos(iWaveIndex * 8);          _3crc->SetPos(iWaveIndex * 8);
5948          uint32_t tmp = 1;          uint32_t one = 1;
5949          _3crc->WriteUint32(&tmp); // unknown, always 1?          _3crc->WriteUint32(&one); // always 1
5950          _3crc->WriteUint32(&crc);          _3crc->WriteUint32(&crc);
5951      }      }
5952    
5953        uint32_t File::GetSampleChecksum(Sample* pSample) {
5954            // get the index of the sample
5955            int iWaveIndex = GetWaveTableIndexOf(pSample);
5956            if (iWaveIndex < 0) throw gig::Exception("Could not retrieve reference crc of sample, could not resolve sample's wave table index");
5957    
5958            return GetSampleChecksumByIndex(iWaveIndex);
5959        }
5960    
5961        uint32_t File::GetSampleChecksumByIndex(int index) {
5962            if (index < 0) throw gig::Exception("Could not retrieve reference crc of sample, invalid wave pool index of sample");
5963    
5964            RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
5965            if (!_3crc) throw gig::Exception("Could not retrieve reference crc of sample, no checksums stored for this file yet");
5966            uint8_t* pData = (uint8_t*) _3crc->LoadChunkData();
5967            if (!pData) throw gig::Exception("Could not retrieve reference crc of sample, no checksums stored for this file yet");
5968    
5969            // read the CRC-32 checksum directly from disk
5970            size_t pos = index * 8;
5971            if (pos + 8 > _3crc->GetNewSize())
5972                throw gig::Exception("Could not retrieve reference crc of sample, could not seek to required position in crc chunk");
5973    
5974            uint32_t one = load32(&pData[pos]); // always 1
5975            if (one != 1)
5976                throw gig::Exception("Could not retrieve reference crc of sample, because reference checksum table is damaged");
5977    
5978            return load32(&pData[pos+4]);
5979        }
5980    
5981        int File::GetWaveTableIndexOf(gig::Sample* pSample) {
5982            if (!pSamples) GetFirstSample(); // make sure sample chunks were scanned
5983            File::SampleList::iterator iter = pSamples->begin();
5984            File::SampleList::iterator end  = pSamples->end();
5985            for (int index = 0; iter != end; ++iter, ++index)
5986                if (*iter == pSample)
5987                    return index;
5988            return -1;
5989        }
5990    
5991        /**
5992         * Checks whether the file's "3CRC" chunk was damaged. This chunk contains
5993         * the CRC32 check sums of all samples' raw wave data.
5994         *
5995         * @return true if 3CRC chunk is OK, or false if 3CRC chunk is damaged
5996         */
5997        bool File::VerifySampleChecksumTable() {
5998            RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
5999            if (!_3crc) return false;
6000            if (_3crc->GetNewSize() <= 0) return false;
6001            if (_3crc->GetNewSize() % 8) return false;
6002            if (!pSamples) GetFirstSample(); // make sure sample chunks were scanned
6003            if (_3crc->GetNewSize() != pSamples->size() * 8) return false;
6004    
6005            const file_offset_t n = _3crc->GetNewSize() / 8;
6006    
6007            uint32_t* pData = (uint32_t*) _3crc->LoadChunkData();
6008            if (!pData) return false;
6009    
6010            for (file_offset_t i = 0; i < n; ++i) {
6011                uint32_t one = pData[i*2];
6012                if (one != 1) return false;
6013            }
6014    
6015            return true;
6016        }
6017    
6018        /**
6019         * Recalculates CRC32 checksums for all samples and rebuilds this gig
6020         * file's checksum table with those new checksums. This might usually
6021         * just be necessary if the checksum table was damaged.
6022         *
6023         * @e IMPORTANT: The current implementation of this method only works
6024         * with files that have not been modified since it was loaded, because
6025         * it expects that no externally caused file structure changes are
6026         * required!
6027         *
6028         * Due to the expectation above, this method is currently protected
6029         * and actually only used by the command line tool "gigdump" yet.
6030         *
6031         * @returns true if Save() is required to be called after this call,
6032         *          false if no further action is required
6033         */
6034        bool File::RebuildSampleChecksumTable() {
6035            // make sure sample chunks were scanned
6036            if (!pSamples) GetFirstSample();
6037    
6038            bool bRequiresSave = false;
6039    
6040            // make sure "3CRC" chunk exists with required size
6041            RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
6042            if (!_3crc) {
6043                _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);
6044                // the order of einf and 3crc is not the same in v2 and v3
6045                RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);
6046                if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);
6047                bRequiresSave = true;
6048            } else if (_3crc->GetNewSize() != pSamples->size() * 8) {
6049                _3crc->Resize(pSamples->size() * 8);
6050                bRequiresSave = true;
6051            }
6052    
6053            if (bRequiresSave) { // refill CRC table for all samples in RAM ...
6054                uint32_t* pData = (uint32_t*) _3crc->LoadChunkData();
6055                {
6056                    File::SampleList::iterator iter = pSamples->begin();
6057                    File::SampleList::iterator end  = pSamples->end();
6058                    for (; iter != end; ++iter) {
6059                        gig::Sample* pSample = (gig::Sample*) *iter;
6060                        int index = GetWaveTableIndexOf(pSample);
6061                        if (index < 0) throw gig::Exception("Could not rebuild crc table for samples, wave table index of a sample could not be resolved");
6062                        pData[index*2]   = 1; // always 1
6063                        pData[index*2+1] = pSample->CalculateWaveDataChecksum();
6064                    }
6065                }
6066            } else { // no file structure changes necessary, so directly write to disk and we are done ...
6067                // make sure file is in write mode
6068                pRIFF->SetMode(RIFF::stream_mode_read_write);
6069                {
6070                    File::SampleList::iterator iter = pSamples->begin();
6071                    File::SampleList::iterator end  = pSamples->end();
6072                    for (; iter != end; ++iter) {
6073                        gig::Sample* pSample = (gig::Sample*) *iter;
6074                        int index = GetWaveTableIndexOf(pSample);
6075                        if (index < 0) throw gig::Exception("Could not rebuild crc table for samples, wave table index of a sample could not be resolved");
6076                        pSample->crc  = pSample->CalculateWaveDataChecksum();
6077                        SetSampleChecksum(pSample, pSample->crc);
6078                    }
6079                }
6080            }
6081    
6082            return bRequiresSave;
6083        }
6084    
6085      Group* File::GetFirstGroup() {      Group* File::GetFirstGroup() {
6086          if (!pGroups) LoadGroups();          if (!pGroups) LoadGroups();
6087          // there must always be at least one group          // there must always be at least one group
# Line 5837  namespace { Line 6310  namespace {
6310      void File::UpdateChunks(progress_t* pProgress) {      void File::UpdateChunks(progress_t* pProgress) {
6311          bool newFile = pRIFF->GetSubList(LIST_TYPE_INFO) == NULL;          bool newFile = pRIFF->GetSubList(LIST_TYPE_INFO) == NULL;
6312    
         b64BitWavePoolOffsets = pVersion && pVersion->major == 3;  
   
6313          // update own gig format extension chunks          // update own gig format extension chunks
6314          // (not part of the GigaStudio 4 format)          // (not part of the GigaStudio 4 format)
6315          //          RIFF::List* lst3LS = pRIFF->GetSubList(LIST_TYPE_3LS);
6316            if (!lst3LS) {
6317                lst3LS = pRIFF->AddSubList(LIST_TYPE_3LS);
6318            }
6319            // Make sure <3LS > chunk is placed before <ptbl> chunk. The precise
6320            // location of <3LS > is irrelevant, however it should be located
6321            // before  the actual wave data
6322            RIFF::Chunk* ckPTBL = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
6323            pRIFF->MoveSubChunk(lst3LS, ckPTBL);
6324    
6325          // This must be performed before writing the chunks for instruments,          // This must be performed before writing the chunks for instruments,
6326          // because the instruments' script slots will write the file offsets          // because the instruments' script slots will write the file offsets
6327          // of the respective instrument script chunk as reference.          // of the respective instrument script chunk as reference.
6328          if (pScriptGroups) {          if (pScriptGroups) {
6329              RIFF::List* lst3LS = pRIFF->GetSubList(LIST_TYPE_3LS);              // Update instrument script (group) chunks.
6330              if (pScriptGroups->empty()) {              for (std::list<ScriptGroup*>::iterator it = pScriptGroups->begin();
6331                  if (lst3LS) pRIFF->DeleteSubChunk(lst3LS);                   it != pScriptGroups->end(); ++it)
6332              } else {              {
6333                  if (!lst3LS) lst3LS = pRIFF->AddSubList(LIST_TYPE_3LS);                  (*it)->UpdateChunks(pProgress);
   
                 // Update instrument script (group) chunks.  
   
                 for (std::list<ScriptGroup*>::iterator it = pScriptGroups->begin();  
                      it != pScriptGroups->end(); ++it)  
                 {  
                     (*it)->UpdateChunks(pProgress);  
                 }  
6334              }              }
6335          }          }
6336    
6337            // in case no libgig custom format data was added, then remove the
6338            // custom "3LS " chunk again
6339            if (!lst3LS->CountSubChunks()) {
6340                pRIFF->DeleteSubChunk(lst3LS);
6341                lst3LS = NULL;
6342            }
6343    
6344          // first update base class's chunks          // first update base class's chunks
6345          DLS::File::UpdateChunks(pProgress);          DLS::File::UpdateChunks(pProgress);
6346    
# Line 5920  namespace { Line 6399  namespace {
6399          // Note that there are several fields with unknown use. These          // Note that there are several fields with unknown use. These
6400          // are set to zero.          // are set to zero.
6401    
6402          int sublen = pSamples->size() / 8 + 49;          int sublen = int(pSamples->size() / 8 + 49);
6403          int einfSize = (Instruments + 1) * sublen;          int einfSize = (Instruments + 1) * sublen;
6404    
6405          RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);          RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);
# Line 5993  namespace { Line 6472  namespace {
6472                  store32(&pData[(instrumentIdx + 1) * sublen + 24], nbloops);                  store32(&pData[(instrumentIdx + 1) * sublen + 24], nbloops);
6473                  // next 8 bytes unknown                  // next 8 bytes unknown
6474                  store32(&pData[(instrumentIdx + 1) * sublen + 36], instrumentIdx);                  store32(&pData[(instrumentIdx + 1) * sublen + 36], instrumentIdx);
6475                  store32(&pData[(instrumentIdx + 1) * sublen + 40], pSamples->size());                  store32(&pData[(instrumentIdx + 1) * sublen + 40], (uint32_t) pSamples->size());
6476                  // next 4 bytes unknown                  // next 4 bytes unknown
6477    
6478                  totnbregions += instrument->Regions;                  totnbregions += instrument->Regions;
# Line 6011  namespace { Line 6490  namespace {
6490              store32(&pData[24], totnbloops);              store32(&pData[24], totnbloops);
6491              // next 8 bytes unknown              // next 8 bytes unknown
6492              // next 4 bytes unknown, not always 0              // next 4 bytes unknown, not always 0
6493              store32(&pData[40], pSamples->size());              store32(&pData[40], (uint32_t) pSamples->size());
6494              // next 4 bytes unknown              // next 4 bytes unknown
6495          }          }
6496    
6497          // update 3crc chunk          // update 3crc chunk
6498    
6499          // The 3crc chunk contains CRC-32 checksums for the          // The 3crc chunk contains CRC-32 checksums for the
6500          // samples. The actual checksum values will be filled in          // samples. When saving a gig file to disk, we first update the 3CRC
6501          // later, by Sample::Write.          // chunk here (in RAM) with the old crc values which we read from the
6502            // 3CRC chunk when we opened the file (available with gig::Sample::crc
6503            // member variable). This step is required, because samples might have
6504            // been deleted by the user since the file was opened, which in turn
6505            // changes the order of the (i.e. old) checksums within the 3crc chunk.
6506            // If a sample was conciously modified by the user (that is if
6507            // Sample::Write() was called later on) then Sample::Write() will just
6508            // update the respective individual checksum(s) directly on disk and
6509            // leaves all other sample checksums untouched.
6510    
6511          RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);          RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
6512          if (_3crc) {          if (_3crc) {
6513              _3crc->Resize(pSamples->size() * 8);              _3crc->Resize(pSamples->size() * 8);
6514          } else if (newFile) {          } else /*if (newFile)*/ {
6515              _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);              _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);
             _3crc->LoadChunkData();  
   
6516              // the order of einf and 3crc is not the same in v2 and v3              // the order of einf and 3crc is not the same in v2 and v3
6517              if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);              if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);
6518          }          }
6519            { // must be performed in RAM here ...
6520                uint32_t* pData = (uint32_t*) _3crc->LoadChunkData();
6521                if (pData) {
6522                    File::SampleList::iterator iter = pSamples->begin();
6523                    File::SampleList::iterator end  = pSamples->end();
6524                    for (int index = 0; iter != end; ++iter, ++index) {
6525                        gig::Sample* pSample = (gig::Sample*) *iter;
6526                        pData[index*2]   = 1; // always 1
6527                        pData[index*2+1] = pSample->crc;
6528                    }
6529                }
6530            }
6531      }      }
6532            
6533      void File::UpdateFileOffsets() {      void File::UpdateFileOffsets() {
# Line 6075  namespace { Line 6572  namespace {
6572  // *************** Exception ***************  // *************** Exception ***************
6573  // *  // *
6574    
6575      Exception::Exception(String Message) : DLS::Exception(Message) {      Exception::Exception() : DLS::Exception() {
6576        }
6577    
6578        Exception::Exception(String format, ...) : DLS::Exception() {
6579            va_list arg;
6580            va_start(arg, format);
6581            Message = assemble(format, arg);
6582            va_end(arg);
6583        }
6584    
6585        Exception::Exception(String format, va_list arg) : DLS::Exception() {
6586            Message = assemble(format, arg);
6587      }      }
6588    
6589      void Exception::PrintMessage() {      void Exception::PrintMessage() {
Legend:
Removed from v.2700  
changed lines
  Added in v.3350
  ViewVC Help
Powered by ViewVC