/[svn]/libgig/trunk/src/gig.cpp
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Diff of /libgig/trunk/src/gig.cpp

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revision 3348 by schoenebeck, Tue Oct 3 15:05:45 2017 UTC revision 3440 by schoenebeck, Sun Dec 9 20:14:46 2018 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) 2003-2017 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2018 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 468  namespace { Line 468  namespace {
468          TruncatedBits     = 0;          TruncatedBits     = 0;
469          if (Compressed) {          if (Compressed) {
470              uint32_t version = ewav->ReadInt32();              uint32_t version = ewav->ReadInt32();
471              if (version == 3 && BitDepth == 24) {              if (version > 2 && BitDepth == 24) {
472                  Dithered = ewav->ReadInt32();                  Dithered = ewav->ReadInt32();
473                  ewav->SetPos(Channels == 2 ? 84 : 64);                  ewav->SetPos(Channels == 2 ? 84 : 64);
474                  TruncatedBits = ewav->ReadInt32();                  TruncatedBits = ewav->ReadInt32();
# Line 1975  namespace { Line 1975  namespace {
1975          RIFF::Chunk* _3ewa = pParentList->GetSubChunk(CHUNK_ID_3EWA);          RIFF::Chunk* _3ewa = pParentList->GetSubChunk(CHUNK_ID_3EWA);
1976          if (!_3ewa) {          if (!_3ewa) {
1977              File* pFile = (File*) GetParent()->GetParent()->GetParent();              File* pFile = (File*) GetParent()->GetParent()->GetParent();
1978              bool version3 = pFile->pVersion && pFile->pVersion->major == 3;              bool versiongt2 = pFile->pVersion && pFile->pVersion->major > 2;
1979              _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, version3 ? 148 : 140);              _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, versiongt2 ? 148 : 140);
1980          }          }
1981          pData = (uint8_t*) _3ewa->LoadChunkData();          pData = (uint8_t*) _3ewa->LoadChunkData();
1982    
# Line 2309  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 3181  namespace { Line 3208  namespace {
3208          }          }
3209          Layers = 1;          Layers = 1;
3210          File* file = (File*) GetParent()->GetParent();          File* file = (File*) GetParent()->GetParent();
3211          int dimensionBits = (file->pVersion && file->pVersion->major == 3) ? 8 : 5;          int dimensionBits = (file->pVersion && file->pVersion->major > 2) ? 8 : 5;
3212    
3213          // Actual Loading          // Actual Loading
3214    
# Line 3225  namespace { Line 3252  namespace {
3252              UpdateVelocityTable();              UpdateVelocityTable();
3253    
3254              // jump to start of the wave pool indices (if not already there)              // jump to start of the wave pool indices (if not already there)
3255              if (file->pVersion && file->pVersion->major == 3)              if (file->pVersion && file->pVersion->major > 2)
3256                  _3lnk->SetPos(68); // version 3 has a different 3lnk structure                  _3lnk->SetPos(68); // version 3 has a different 3lnk structure
3257              else              else
3258                  _3lnk->SetPos(44);                  _3lnk->SetPos(44);
# Line 3284  namespace { Line 3311  namespace {
3311          }          }
3312    
3313          File* pFile = (File*) GetParent()->GetParent();          File* pFile = (File*) GetParent()->GetParent();
3314          bool version3 = pFile->pVersion && pFile->pVersion->major == 3;          bool versiongt2 = pFile->pVersion && pFile->pVersion->major > 2;
3315          const int iMaxDimensions =  version3 ? 8 : 5;          const int iMaxDimensions =  versiongt2 ? 8 : 5;
3316          const int iMaxDimensionRegions = version3 ? 256 : 32;          const int iMaxDimensionRegions = versiongt2 ? 256 : 32;
3317    
3318          // make sure '3lnk' chunk exists          // make sure '3lnk' chunk exists
3319          RIFF::Chunk* _3lnk = pCkRegion->GetSubChunk(CHUNK_ID_3LNK);          RIFF::Chunk* _3lnk = pCkRegion->GetSubChunk(CHUNK_ID_3LNK);
3320          if (!_3lnk) {          if (!_3lnk) {
3321              const int _3lnkChunkSize = version3 ? 1092 : 172;              const int _3lnkChunkSize = versiongt2 ? 1092 : 172;
3322              _3lnk = pCkRegion->AddSubChunk(CHUNK_ID_3LNK, _3lnkChunkSize);              _3lnk = pCkRegion->AddSubChunk(CHUNK_ID_3LNK, _3lnkChunkSize);
3323              memset(_3lnk->LoadChunkData(), 0, _3lnkChunkSize);              memset(_3lnk->LoadChunkData(), 0, _3lnkChunkSize);
3324    
# Line 3315  namespace { Line 3342  namespace {
3342          }          }
3343    
3344          // update wave pool table in '3lnk' chunk          // update wave pool table in '3lnk' chunk
3345          const int iWavePoolOffset = version3 ? 68 : 44;          const int iWavePoolOffset = versiongt2 ? 68 : 44;
3346          for (uint i = 0; i < iMaxDimensionRegions; i++) {          for (uint i = 0; i < iMaxDimensionRegions; i++) {
3347              int iWaveIndex = -1;              int iWaveIndex = -1;
3348              if (i < DimensionRegions) {              if (i < DimensionRegions) {
# Line 3458  namespace { Line 3485  namespace {
3485    
3486          // check if max. amount of dimensions reached          // check if max. amount of dimensions reached
3487          File* file = (File*) GetParent()->GetParent();          File* file = (File*) GetParent()->GetParent();
3488          const int iMaxDimensions = (file->pVersion && file->pVersion->major == 3) ? 8 : 5;          const int iMaxDimensions = (file->pVersion && file->pVersion->major > 2) ? 8 : 5;
3489          if (Dimensions >= iMaxDimensions)          if (Dimensions >= iMaxDimensions)
3490              throw gig::Exception("Could not add new dimension, max. amount of " + ToString(iMaxDimensions) + " dimensions already reached");              throw gig::Exception("Could not add new dimension, max. amount of " + ToString(iMaxDimensions) + " dimensions already reached");
3491          // check if max. amount of dimension bits reached          // check if max. amount of dimension bits reached
# Line 4116  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            if (WavePoolTableIndex + 1 > file->WavePoolCount) return NULL;
4147          // for new files or files >= 2 GB use 64 bit wave pool offsets          // for new files or files >= 2 GB use 64 bit wave pool offsets
4148          if (file->pRIFF->IsNew() || (file->pRIFF->GetCurrentFileSize() >> 31)) {          if (file->pRIFF->IsNew() || (file->pRIFF->GetCurrentFileSize() >> 31)) {
4149              // use 64 bit wave pool offsets (treating this as large file)              // use 64 bit wave pool offsets (treating this as large file)
# Line 4789  namespace { Line 4817  namespace {
4817              File* pFile = (File*) GetParent();              File* pFile = (File*) GetParent();
4818    
4819              // 3ewg is bigger in gig3, as it includes the iMIDI rules              // 3ewg is bigger in gig3, as it includes the iMIDI rules
4820              int size = (pFile->pVersion && pFile->pVersion->major == 3) ? 16416 : 12;              int size = (pFile->pVersion && pFile->pVersion->major > 2) ? 16416 : 12;
4821              _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, size);              _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, size);
4822              memset(_3ewg->LoadChunkData(), 0, size);              memset(_3ewg->LoadChunkData(), 0, size);
4823          }          }
# Line 5371  namespace { Line 5399  namespace {
5399          RIFF::List* _3gnl = _3gri->GetSubList(LIST_TYPE_3GNL);          RIFF::List* _3gnl = _3gri->GetSubList(LIST_TYPE_3GNL);
5400          if (!_3gnl) _3gnl = _3gri->AddSubList(LIST_TYPE_3GNL);          if (!_3gnl) _3gnl = _3gri->AddSubList(LIST_TYPE_3GNL);
5401    
5402          if (!pNameChunk && pFile->pVersion && pFile->pVersion->major == 3) {          if (!pNameChunk && pFile->pVersion && pFile->pVersion->major > 2) {
5403              // v3 has a fixed list of 128 strings, find a free one              // v3 has a fixed list of 128 strings, find a free one
5404              for (RIFF::Chunk* ck = _3gnl->GetFirstSubChunk() ; ck ; ck = _3gnl->GetNextSubChunk()) {              for (RIFF::Chunk* ck = _3gnl->GetFirstSubChunk() ; ck ; ck = _3gnl->GetNextSubChunk()) {
5405                  if (strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) {                  if (strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) {
# Line 5466  namespace { Line 5494  namespace {
5494          0, 3, 20030331 & 0xffff, 20030331 >> 16          0, 3, 20030331 & 0xffff, 20030331 >> 16
5495      };      };
5496    
5497        /// Reflects Gigasampler file format version 4.0 (2007-10-12).
5498        const DLS::version_t File::VERSION_4 = {
5499            0, 4, 20071012 & 0xffff, 20071012 >> 16
5500        };
5501    
5502      static const DLS::Info::string_length_t _FileFixedStringLengths[] = {      static const DLS::Info::string_length_t _FileFixedStringLengths[] = {
5503          { CHUNK_ID_IARL, 256 },          { CHUNK_ID_IARL, 256 },
5504          { CHUNK_ID_IART, 128 },          { CHUNK_ID_IART, 128 },
# Line 5562  namespace { Line 5595  namespace {
5595          return static_cast<gig::Sample*>( *it );          return static_cast<gig::Sample*>( *it );
5596      }      }
5597    
5598        /**
5599         * Returns the total amount of samples of this gig file.
5600         *
5601         * Note that this method might block for a long time in case it is required
5602         * to load the sample info for the first time.
5603         *
5604         * @returns total amount of samples
5605         */
5606        size_t File::CountSamples() {
5607            if (!pSamples) LoadSamples();
5608            if (!pSamples) return 0;
5609            return pSamples->size();
5610        }
5611    
5612      /** @brief Add a new sample.      /** @brief Add a new sample.
5613       *       *
5614       * This will create a new Sample object for the gig file. You have to       * This will create a new Sample object for the gig file. You have to
# Line 5697  namespace { Line 5744  namespace {
5744      }      }
5745    
5746      /**      /**
5747         * Returns the total amount of instruments of this gig file.
5748         *
5749         * Note that this method might block for a long time in case it is required
5750         * to load the instruments info for the first time.
5751         *
5752         * @returns total amount of instruments
5753         */
5754        size_t File::CountInstruments() {
5755            if (!pInstruments) LoadInstruments();
5756            if (!pInstruments) return 0;
5757            return pInstruments->size();
5758        }
5759    
5760        /**
5761       * Returns the instrument with the given index.       * Returns the instrument with the given index.
5762       *       *
5763       * @param index     - number of the sought instrument (0..n)       * @param index     - number of the sought instrument (0..n)
# Line 6015  namespace { Line 6076  namespace {
6076              _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);              _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);
6077              // 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
6078              RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);              RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);
6079              if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);              if (einf && pVersion && pVersion->major > 2) pRIFF->MoveSubChunk(_3crc, einf);
6080              bRequiresSave = true;              bRequiresSave = true;
6081          } else if (_3crc->GetNewSize() != pSamples->size() * 8) {          } else if (_3crc->GetNewSize() != pSamples->size() * 8) {
6082              _3crc->Resize(pSamples->size() * 8);              _3crc->Resize(pSamples->size() * 8);
# Line 6164  namespace { Line 6225  namespace {
6225                  RIFF::Chunk* ck = lst3gnl->GetFirstSubChunk();                  RIFF::Chunk* ck = lst3gnl->GetFirstSubChunk();
6226                  while (ck) {                  while (ck) {
6227                      if (ck->GetChunkID() == CHUNK_ID_3GNM) {                      if (ck->GetChunkID() == CHUNK_ID_3GNM) {
6228                          if (pVersion && pVersion->major == 3 &&                          if (pVersion && pVersion->major > 2 &&
6229                              strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) break;                              strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) break;
6230    
6231                          pGroups->push_back(new Group(this, ck));                          pGroups->push_back(new Group(this, ck));
# Line 6340  namespace { Line 6401  namespace {
6401    
6402              // v3: make sure the file has 128 3gnm chunks              // v3: make sure the file has 128 3gnm chunks
6403              // (before updating the Group chunks)              // (before updating the Group chunks)
6404              if (pVersion && pVersion->major == 3) {              if (pVersion && pVersion->major > 2) {
6405                  RIFF::Chunk* _3gnm = _3gnl->GetFirstSubChunk();                  RIFF::Chunk* _3gnm = _3gnl->GetFirstSubChunk();
6406                  for (int i = 0 ; i < 128 ; i++) {                  for (int i = 0 ; i < 128 ; i++) {
6407                      if (i >= pGroups->size()) ::SaveString(CHUNK_ID_3GNM, _3gnm, _3gnl, "", "", true, 64);                      if (i >= pGroups->size()) ::SaveString(CHUNK_ID_3GNM, _3gnm, _3gnl, "", "", true, 64);
# Line 6486  namespace { Line 6547  namespace {
6547          } else /*if (newFile)*/ {          } else /*if (newFile)*/ {
6548              _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);              _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);
6549              // 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
6550              if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);              if (einf && pVersion && pVersion->major > 2) pRIFF->MoveSubChunk(_3crc, einf);
6551          }          }
6552          { // must be performed in RAM here ...          { // must be performed in RAM here ...
6553              uint32_t* pData = (uint32_t*) _3crc->LoadChunkData();              uint32_t* pData = (uint32_t*) _3crc->LoadChunkData();
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