/[svn]/libgig/trunk/src/gig.cpp
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revision 933 by schoenebeck, Fri Nov 24 12:50:05 2006 UTC revision 1098 by schoenebeck, Thu Mar 15 00:32:06 2007 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) 2003-2006 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2007 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 364  namespace { Line 364  namespace {
364       * Usually there is absolutely no need to call this method explicitly.       * Usually there is absolutely no need to call this method explicitly.
365       * It will be called automatically when File::Save() was called.       * It will be called automatically when File::Save() was called.
366       *       *
367       * @throws DLS::Exception if FormatTag != WAVE_FORMAT_PCM or no sample data       * @throws DLS::Exception if FormatTag != DLS_WAVE_FORMAT_PCM or no sample data
368       *                        was provided yet       *                        was provided yet
369       * @throws gig::Exception if there is any invalid sample setting       * @throws gig::Exception if there is any invalid sample setting
370       */       */
# Line 635  namespace { Line 635  namespace {
635       * enlarged samples before calling File::Save() as this might exceed the       * enlarged samples before calling File::Save() as this might exceed the
636       * current sample's boundary!       * current sample's boundary!
637       *       *
638       * Also note: only WAVE_FORMAT_PCM is currently supported, that is       * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is
639       * FormatTag must be WAVE_FORMAT_PCM. Trying to resize samples with       * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with
640       * other formats will fail!       * other formats will fail!
641       *       *
642       * @param iNewSize - new sample wave data size in sample points (must be       * @param iNewSize - new sample wave data size in sample points (must be
643       *                   greater than zero)       *                   greater than zero)
644       * @throws DLS::Excecption if FormatTag != WAVE_FORMAT_PCM       * @throws DLS::Excecption if FormatTag != DLS_WAVE_FORMAT_PCM
645       *                         or if \a iNewSize is less than 1       *                         or if \a iNewSize is less than 1
646       * @throws gig::Exception if existing sample is compressed       * @throws gig::Exception if existing sample is compressed
647       * @see DLS::Sample::GetSize(), DLS::Sample::FrameSize,       * @see DLS::Sample::GetSize(), DLS::Sample::FrameSize,
# Line 1338  namespace { Line 1338  namespace {
1338                  if (lfo3ctrl & 0x40) // bit 6                  if (lfo3ctrl & 0x40) // bit 6
1339                      VCFType = vcf_type_lowpassturbo;                      VCFType = vcf_type_lowpassturbo;
1340              }              }
1341                if (_3ewa->RemainingBytes() >= 8) {
1342                    _3ewa->Read(DimensionUpperLimits, 1, 8);
1343                } else {
1344                    memset(DimensionUpperLimits, 0, 8);
1345                }
1346          } else { // '3ewa' chunk does not exist yet          } else { // '3ewa' chunk does not exist yet
1347              // use default values              // use default values
1348              LFO3Frequency                   = 1.0;              LFO3Frequency                   = 1.0;
# Line 1418  namespace { Line 1423  namespace {
1423              VCFVelocityDynamicRange         = 0x04;              VCFVelocityDynamicRange         = 0x04;
1424              VCFVelocityCurve                = curve_type_linear;              VCFVelocityCurve                = curve_type_linear;
1425              VCFType                         = vcf_type_lowpass;              VCFType                         = vcf_type_lowpass;
1426                memset(DimensionUpperLimits, 0, 8);
1427          }          }
1428    
1429          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,
# Line 1473  namespace { Line 1479  namespace {
1479    
1480          // update '3ewa' chunk with DimensionRegion's current settings          // update '3ewa' chunk with DimensionRegion's current settings
1481    
1482          const uint32_t unknown = _3ewa->GetSize(); // unknown, always chunk size ?          const uint32_t chunksize = _3ewa->GetSize();
1483          memcpy(&pData[0], &unknown, 4);          memcpy(&pData[0], &chunksize, 4); // unknown, always chunk size?
1484    
1485          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);
1486          memcpy(&pData[4], &lfo3freq, 4);          memcpy(&pData[4], &lfo3freq, 4);
# Line 1729  namespace { Line 1735  namespace {
1735    
1736          const uint8_t vcftype = (VCFType == vcf_type_lowpassturbo) ? vcf_type_lowpass : VCFType;          const uint8_t vcftype = (VCFType == vcf_type_lowpassturbo) ? vcf_type_lowpass : VCFType;
1737          memcpy(&pData[139], &vcftype, 1);          memcpy(&pData[139], &vcftype, 1);
1738    
1739            if (chunksize >= 148) {
1740                memcpy(&pData[140], DimensionUpperLimits, 8);
1741            }
1742      }      }
1743    
1744      // 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
# Line 2110  namespace { Line 2120  namespace {
2120                                                             dimension == dimension_releasetrigger ||                                                             dimension == dimension_releasetrigger ||
2121                                                             dimension == dimension_keyboard ||                                                             dimension == dimension_keyboard ||
2122                                                             dimension == dimension_roundrobin ||                                                             dimension == dimension_roundrobin ||
2123                                                             dimension == dimension_random) ? split_type_bit                                                             dimension == dimension_random ||
2124                                                                                            : split_type_normal;                                                             dimension == dimension_smartmidi ||
2125                                                               dimension == dimension_roundrobinkeyboard) ? split_type_bit
2126                                                                                                          : split_type_normal;
2127                      pDimensionDefinitions[i].zone_size  =                      pDimensionDefinitions[i].zone_size  =
2128                          (pDimensionDefinitions[i].split_type == split_type_normal) ? 128.0 / pDimensionDefinitions[i].zones                          (pDimensionDefinitions[i].split_type == split_type_normal) ? 128.0 / pDimensionDefinitions[i].zones
2129                                                                                     : 0;                                                                                     : 0;
# Line 2248  namespace { Line 2260  namespace {
2260          int dim[8] = { 0 };          int dim[8] = { 0 };
2261          for (int i = 0 ; i < DimensionRegions ; i++) {          for (int i = 0 ; i < DimensionRegions ; i++) {
2262    
2263              if (pDimensionRegions[i]->VelocityUpperLimit) {              if (pDimensionRegions[i]->DimensionUpperLimits[veldim] ||
2264                    pDimensionRegions[i]->VelocityUpperLimit) {
2265                  // create the velocity table                  // create the velocity table
2266                  uint8_t* table = pDimensionRegions[i]->VelocityTable;                  uint8_t* table = pDimensionRegions[i]->VelocityTable;
2267                  if (!table) {                  if (!table) {
# Line 2257  namespace { Line 2270  namespace {
2270                  }                  }
2271                  int tableidx = 0;                  int tableidx = 0;
2272                  int velocityZone = 0;                  int velocityZone = 0;
2273                  for (int k = i ; k < end ; k += step) {                  if (pDimensionRegions[i]->DimensionUpperLimits[veldim]) { // gig3
2274                      DimensionRegion *d = pDimensionRegions[k];                      for (int k = i ; k < end ; k += step) {
2275                      for (; tableidx <= d->VelocityUpperLimit ; tableidx++) table[tableidx] = velocityZone;                          DimensionRegion *d = pDimensionRegions[k];
2276                      velocityZone++;                          for (; tableidx <= d->DimensionUpperLimits[veldim] ; tableidx++) table[tableidx] = velocityZone;
2277                            velocityZone++;
2278                        }
2279                    } else { // gig2
2280                        for (int k = i ; k < end ; k += step) {
2281                            DimensionRegion *d = pDimensionRegions[k];
2282                            for (; tableidx <= d->VelocityUpperLimit ; tableidx++) table[tableidx] = velocityZone;
2283                            velocityZone++;
2284                        }
2285                  }                  }
2286              } else {              } else {
2287                  if (pDimensionRegions[i]->VelocityTable) {                  if (pDimensionRegions[i]->VelocityTable) {
# Line 2455  namespace { Line 2476  namespace {
2476              } else {              } else {
2477                  switch (pDimensionDefinitions[i].split_type) {                  switch (pDimensionDefinitions[i].split_type) {
2478                      case split_type_normal:                      case split_type_normal:
2479                          bits = uint8_t(DimValues[i] / pDimensionDefinitions[i].zone_size);                          if (pDimensionRegions[0]->DimensionUpperLimits[i]) {
2480                                // gig3: all normal dimensions (not just the velocity dimension) have custom zone ranges
2481                                for (bits = 0 ; bits < pDimensionDefinitions[i].zones ; bits++) {
2482                                    if (DimValues[i] <= pDimensionRegions[bits << bitpos]->DimensionUpperLimits[i]) break;
2483                                }
2484                            } else {
2485                                // gig2: evenly sized zones
2486                                bits = uint8_t(DimValues[i] / pDimensionDefinitions[i].zone_size);
2487                            }
2488                          break;                          break;
2489                      case split_type_bit: // the value is already the sought dimension bit number                      case split_type_bit: // the value is already the sought dimension bit number
2490                          const uint8_t limiter_mask = (0xff << pDimensionDefinitions[i].bits) ^ 0xff;                          const uint8_t limiter_mask = (0xff << pDimensionDefinitions[i].bits) ^ 0xff;
# Line 2469  namespace { Line 2498  namespace {
2498          DimensionRegion* dimreg = pDimensionRegions[dimregidx];          DimensionRegion* dimreg = pDimensionRegions[dimregidx];
2499          if (veldim != -1) {          if (veldim != -1) {
2500              // (dimreg is now the dimension region for the lowest velocity)              // (dimreg is now the dimension region for the lowest velocity)
2501              if (dimreg->VelocityUpperLimit) // custom defined zone ranges              if (dimreg->VelocityTable) // custom defined zone ranges
2502                  bits = dimreg->VelocityTable[DimValues[veldim]];                  bits = dimreg->VelocityTable[DimValues[veldim]];
2503              else // normal split type              else // normal split type
2504                  bits = uint8_t(DimValues[veldim] / pDimensionDefinitions[veldim].zone_size);                  bits = uint8_t(DimValues[veldim] / pDimensionDefinitions[veldim].zone_size);
# Line 2715  namespace { Line 2744  namespace {
2744    
2745      /** @brief Update chunks with current group settings.      /** @brief Update chunks with current group settings.
2746       *       *
2747       * Apply current Group field values to the respective. You have to call       * Apply current Group field values to the respective chunks. You have
2748       * File::Save() to make changes persistent.       * to call File::Save() to make changes persistent.
2749         *
2750         * Usually there is absolutely no need to call this method explicitly.
2751         * It will be called automatically when File::Save() was called.
2752       */       */
2753      void Group::UpdateChunks() {      void Group::UpdateChunks() {
2754          // make sure <3gri> and <3gnl> list chunks exist          // make sure <3gri> and <3gnl> list chunks exist
# Line 2864  namespace { Line 2896  namespace {
2896          if (!pSamples || !pSamples->size()) throw gig::Exception("Could not delete sample as there are no samples");          if (!pSamples || !pSamples->size()) throw gig::Exception("Could not delete sample as there are no samples");
2897          SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), (DLS::Sample*) pSample);          SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), (DLS::Sample*) pSample);
2898          if (iter == pSamples->end()) throw gig::Exception("Could not delete sample, could not find given sample");          if (iter == pSamples->end()) throw gig::Exception("Could not delete sample, could not find given sample");
2899            if (SamplesIterator != pSamples->end() && *SamplesIterator == pSample) ++SamplesIterator; // avoid iterator invalidation
2900          pSamples->erase(iter);          pSamples->erase(iter);
2901          delete pSample;          delete pSample;
2902      }      }
# Line 3000  namespace { Line 3033  namespace {
3033       * have to call Save() to make this persistent to the file.       * have to call Save() to make this persistent to the file.
3034       *       *
3035       * @param pInstrument - instrument to delete       * @param pInstrument - instrument to delete
3036       * @throws gig::Excption if given instrument could not be found       * @throws gig::Exception if given instrument could not be found
3037       */       */
3038      void File::DeleteInstrument(Instrument* pInstrument) {      void File::DeleteInstrument(Instrument* pInstrument) {
3039          if (!pInstruments) throw gig::Exception("Could not delete instrument as there are no instruments");          if (!pInstruments) throw gig::Exception("Could not delete instrument as there are no instruments");
# Line 3078  namespace { Line 3111  namespace {
3111          return pGroup;          return pGroup;
3112      }      }
3113    
3114        /** @brief Delete a group and its samples.
3115         *
3116         * This will delete the given Group object and all the samples that
3117         * belong to this group from the gig file. You have to call Save() to
3118         * make this persistent to the file.
3119         *
3120         * @param pGroup - group to delete
3121         * @throws gig::Exception if given group could not be found
3122         */
3123      void File::DeleteGroup(Group* pGroup) {      void File::DeleteGroup(Group* pGroup) {
3124          if (!pGroups) LoadGroups();          if (!pGroups) LoadGroups();
3125          std::list<Group*>::iterator iter = find(pGroups->begin(), pGroups->end(), pGroup);          std::list<Group*>::iterator iter = find(pGroups->begin(), pGroups->end(), pGroup);
3126          if (iter == pGroups->end()) throw gig::Exception("Could not delete group, could not find given group");          if (iter == pGroups->end()) throw gig::Exception("Could not delete group, could not find given group");
3127          if (pGroups->size() == 1) throw gig::Exception("Cannot delete group, there must be at least one default group!");          if (pGroups->size() == 1) throw gig::Exception("Cannot delete group, there must be at least one default group!");
3128            // delete all members of this group
3129            for (Sample* pSample = pGroup->GetFirstSample(); pSample; pSample = pGroup->GetNextSample()) {
3130                DeleteSample(pSample);
3131            }
3132            // now delete this group object
3133            pGroups->erase(iter);
3134            delete pGroup;
3135        }
3136    
3137        /** @brief Delete a group.
3138         *
3139         * This will delete the given Group object from the gig file. All the
3140         * samples that belong to this group will not be deleted, but instead
3141         * be moved to another group. You have to call Save() to make this
3142         * persistent to the file.
3143         *
3144         * @param pGroup - group to delete
3145         * @throws gig::Exception if given group could not be found
3146         */
3147        void File::DeleteGroupOnly(Group* pGroup) {
3148            if (!pGroups) LoadGroups();
3149            std::list<Group*>::iterator iter = find(pGroups->begin(), pGroups->end(), pGroup);
3150            if (iter == pGroups->end()) throw gig::Exception("Could not delete group, could not find given group");
3151            if (pGroups->size() == 1) throw gig::Exception("Cannot delete group, there must be at least one default group!");
3152          // move all members of this group to another group          // move all members of this group to another group
3153          pGroup->MoveAll();          pGroup->MoveAll();
3154          pGroups->erase(iter);          pGroups->erase(iter);
# Line 3113  namespace { Line 3179  namespace {
3179          }          }
3180      }      }
3181    
3182        /**
3183         * Apply all the gig file's current instruments, samples, groups and settings
3184         * to the respective RIFF chunks. You have to call Save() to make changes
3185         * persistent.
3186         *
3187         * Usually there is absolutely no need to call this method explicitly.
3188         * It will be called automatically when File::Save() was called.
3189         *
3190         * @throws Exception - on errors
3191         */
3192        void File::UpdateChunks() {
3193            // first update base class's chunks
3194            DLS::File::UpdateChunks();
3195    
3196            // update group's chunks
3197            if (pGroups) {
3198                std::list<Group*>::iterator iter = pGroups->begin();
3199                std::list<Group*>::iterator end  = pGroups->end();
3200                for (; iter != end; ++iter) {
3201                    (*iter)->UpdateChunks();
3202                }
3203            }
3204        }
3205    
3206    
3207    
3208  // *************** Exception ***************  // *************** Exception ***************
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