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

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

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-revision 1102 by persson,
Sun Mar 18 07:13:06 2007 UTC
+revision 1627 by persson,
Sun Jan  6 10:53:53 2008 UTC
 Line 254 
 namespace {
  }
+ // *************** Internal CRC-32 (Cyclic Redundancy Check) functions  ***************
+ // *
+     static uint32_t* __initCRCTable() {
+         static uint32_t res[256];
+         for (int i = 0 ; i < 256 ; i++) {
+             uint32_t c = i;
+             for (int j = 0 ; j < 8 ; j++) {
+                 c = (c & 1) ? 0xedb88320 ^ (c >> 1) : c >> 1;
+             }
+             res[i] = c;
+         }
+         return res;
+     }
+     static const uint32_t* __CRCTable = __initCRCTable();
+     /**
+      * Initialize a CRC variable.
+      *
+      * @param crc - variable to be initialized
+      */
+     inline static void __resetCRC(uint32_t& crc) {
+         crc = 0xffffffff;
+     }
+     /**
+      * Used to calculate checksums of the sample data in a gig file. The
+      * checksums are stored in the 3crc chunk of the gig file and
+      * automatically updated when a sample is written with Sample::Write().
+      *
+      * One should call __resetCRC() to initialize the CRC variable to be
+      * used before calling this function the first time.
+      *
+      * After initializing the CRC variable one can call this function
+      * arbitrary times, i.e. to split the overall CRC calculation into
+      * steps.
+      *
+      * Once the whole data was processed by __calculateCRC(), one should
+      * call __encodeCRC() to get the final CRC result.
+      *
+      * @param buf     - pointer to data the CRC shall be calculated of
+      * @param bufSize - size of the data to be processed
+      * @param crc     - variable the CRC sum shall be stored to
+      */
+     static void __calculateCRC(unsigned char* buf, int bufSize, uint32_t& crc) {
+         for (int i = 0 ; i < bufSize ; i++) {
+             crc = __CRCTable[(crc ^ buf[i]) & 0xff] ^ (crc >> 8);
+         }
+     }
+     /**
+      * Returns the final CRC result.
+      *
+      * @param crc - variable previously passed to __calculateCRC()
+      */
+     inline static uint32_t __encodeCRC(const uint32_t& crc) {
+         return crc ^ 0xffffffff;
+     }
+ // *************** Other Internal functions  ***************
+ // *
+     static split_type_t __resolveSplitType(dimension_t dimension) {
+         return (
+             dimension == dimension_layer ||
+             dimension == dimension_samplechannel ||
+             dimension == dimension_releasetrigger ||
+             dimension == dimension_keyboard ||
+             dimension == dimension_roundrobin ||
+             dimension == dimension_random ||
+             dimension == dimension_smartmidi ||
+             dimension == dimension_roundrobinkeyboard
+         ) ? split_type_bit : split_type_normal;
+     }
+     static int __resolveZoneSize(dimension_def_t& dimension_definition) {
+         return (dimension_definition.split_type == split_type_normal)
+         ? int(128.0 / dimension_definition.zones) : 0;
+     }
  // *************** Sample ***************
  // *
-Line 279 
 namespace {
+Line 366 
 namespace {
       *                         is located, 0 otherwise
       */
      Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) {
-         pInfo->UseFixedLengthStrings = true;
+         static const DLS::Info::string_length_t fixedStringLengths[] = {
+             { CHUNK_ID_INAM, 64 },
+             { 0, 0 }
+         };
+         pInfo->SetFixedStringLengths(fixedStringLengths);
          Instances++;
          FileNo = fileNo;
+         __resetCRC(crc);
          pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX);
          if (pCk3gix) {
              uint16_t iSampleGroup = pCk3gix->ReadInt16();
-Line 314 
 namespace {
+Line 407 
 namespace {
              Manufacturer  = 0;
              Product       = 0;
              SamplePeriod  = uint32_t(1000000000.0 / SamplesPerSecond + 0.5);
-             MIDIUnityNote = 64;
+             MIDIUnityNote = 60;
              FineTune      = 0;
+             SMPTEFormat   = smpte_format_no_offset;
              SMPTEOffset   = 0;
              Loops         = 0;
              LoopID        = 0;
+             LoopType      = loop_type_normal;
              LoopStart     = 0;
              LoopEnd       = 0;
              LoopFraction  = 0;
-Line 374 
 namespace {
+Line 469 
 namespace {
          // make sure 'smpl' chunk exists
          pCkSmpl = pWaveList->GetSubChunk(CHUNK_ID_SMPL);
-         if (!pCkSmpl) pCkSmpl = pWaveList->AddSubChunk(CHUNK_ID_SMPL, 60);
+         if (!pCkSmpl) {
+             pCkSmpl = pWaveList->AddSubChunk(CHUNK_ID_SMPL, 60);
+             memset(pCkSmpl->LoadChunkData(), 0, 60);
+         }
          // update 'smpl' chunk
          uint8_t* pData = (uint8_t*) pCkSmpl->LoadChunkData();
          SamplePeriod = uint32_t(1000000000.0 / SamplesPerSecond + 0.5);
-         memcpy(&pData[0], &Manufacturer, 4);
+         store32(&pData[0], Manufacturer);
-         memcpy(&pData[4], &Product, 4);
+         store32(&pData[4], Product);
-         memcpy(&pData[8], &SamplePeriod, 4);
+         store32(&pData[8], SamplePeriod);
-         memcpy(&pData[12], &MIDIUnityNote, 4);
+         store32(&pData[12], MIDIUnityNote);
-         memcpy(&pData[16], &FineTune, 4);
+         store32(&pData[16], FineTune);
-         memcpy(&pData[20], &SMPTEFormat, 4);
+         store32(&pData[20], SMPTEFormat);
-         memcpy(&pData[24], &SMPTEOffset, 4);
+         store32(&pData[24], SMPTEOffset);
-         memcpy(&pData[28], &Loops, 4);
+         store32(&pData[28], Loops);
          // we skip 'manufByt' for now (4 bytes)
-         memcpy(&pData[36], &LoopID, 4);
+         store32(&pData[36], LoopID);
-         memcpy(&pData[40], &LoopType, 4);
+         store32(&pData[40], LoopType);
-         memcpy(&pData[44], &LoopStart, 4);
+         store32(&pData[44], LoopStart);
-         memcpy(&pData[48], &LoopEnd, 4);
+         store32(&pData[48], LoopEnd);
-         memcpy(&pData[52], &LoopFraction, 4);
+         store32(&pData[52], LoopFraction);
-         memcpy(&pData[56], &LoopPlayCount, 4);
+         store32(&pData[56], LoopPlayCount);
          // make sure '3gix' chunk exists
          pCk3gix = pWaveList->GetSubChunk(CHUNK_ID_3GIX);
-Line 414 
 namespace {
+Line 512 
 namespace {
          }
          // update '3gix' chunk
          pData = (uint8_t*) pCk3gix->LoadChunkData();
-         memcpy(&pData[0], &iSampleGroup, 2);
+         store16(&pData[0], iSampleGroup);
      }
      /// Scans compressed samples for mandatory informations (e.g. actual number of total sample points).
-Line 1099 
 namespace {
+Line 1197 
 namespace {
       *
       * Note: there is currently no support for writing compressed samples.
       *
+      * For 16 bit samples, the data in the source buffer should be
+      * int16_t (using native endianness). For 24 bit, the buffer
+      * should contain three bytes per sample, little-endian.
+      *
       * @param pBuffer     - source buffer
       * @param SampleCount - number of sample points to write
       * @throws DLS::Exception if current sample size is too small
-Line 1107 
 namespace {
+Line 1209 
 namespace {
       */
      unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) {
          if (Compressed) throw gig::Exception("There is no support for writing compressed gig samples (yet)");
-         return DLS::Sample::Write(pBuffer, SampleCount);
+         // if this is the first write in this sample, reset the
+         // checksum calculator
+         if (pCkData->GetPos() == 0) {
+             __resetCRC(crc);
+         }
+         if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");
+         unsigned long res;
+         if (BitDepth == 24) {
+             res = pCkData->Write(pBuffer, SampleCount * FrameSize, 1) / FrameSize;
+         } else { // 16 bit
+             res = Channels == 2 ? pCkData->Write(pBuffer, SampleCount << 1, 2) >> 1
+                                 : pCkData->Write(pBuffer, SampleCount, 2);
+         }
+         __calculateCRC((unsigned char *)pBuffer, SampleCount * FrameSize, crc);
+         // if this is the last write, update the checksum chunk in the
+         // file
+         if (pCkData->GetPos() == pCkData->GetSize()) {
+             File* pFile = static_cast<File*>(GetParent());
+             pFile->SetSampleChecksum(this, __encodeCRC(crc));
+         }
+         return res;
      }
      /**
-Line 1183 
 namespace {
+Line 1307 
 namespace {
      uint                               DimensionRegion::Instances       = 0;
      DimensionRegion::VelocityTableMap* DimensionRegion::pVelocityTables = NULL;
-     DimensionRegion::DimensionRegion(RIFF::List* _3ewl) : DLS::Sampler(_3ewl) {
+     DimensionRegion::DimensionRegion(Region* pParent, RIFF::List* _3ewl) : DLS::Sampler(_3ewl) {
          Instances++;
          pSample = NULL;
+         pRegion = pParent;
+         if (_3ewl->GetSubChunk(CHUNK_ID_WSMP)) memcpy(&Crossfade, &SamplerOptions, 4);
+         else memset(&Crossfade, 0, 4);
-         memcpy(&Crossfade, &SamplerOptions, 4);
          if (!pVelocityTables) pVelocityTables = new VelocityTableMap;
          RIFF::Chunk* _3ewa = _3ewl->GetSubChunk(CHUNK_ID_3EWA);
-Line 1352 
 namespace {
+Line 1479 
 namespace {
              LFO1ControlDepth                = 0;
              LFO3ControlDepth                = 0;
              EG1Attack                       = 0.0;
-             EG1Decay1                       = 0.0;
+             EG1Decay1                       = 0.005;
-             EG1Sustain                      = 0;
+             EG1Sustain                      = 1000;
-             EG1Release                      = 0.0;
+             EG1Release                      = 0.3;
              EG1Controller.type              = eg1_ctrl_t::type_none;
              EG1Controller.controller_number = 0;
              EG1ControllerInvert             = false;
-Line 1369 
 namespace {
+Line 1496 
 namespace {
              EG2ControllerReleaseInfluence   = 0;
              LFO1Frequency                   = 1.0;
              EG2Attack                       = 0.0;
-             EG2Decay1                       = 0.0;
+             EG2Decay1                       = 0.005;
-             EG2Sustain                      = 0;
+             EG2Sustain                      = 1000;
-             EG2Release                      = 0.0;
+             EG2Release                      = 0.3;
              LFO2ControlDepth                = 0;
              LFO2Frequency                   = 1.0;
              LFO2InternalDepth               = 0;
              EG1Decay2                       = 0.0;
-             EG1InfiniteSustain              = false;
+             EG1InfiniteSustain              = true;
-             EG1PreAttack                    = 1000;
+             EG1PreAttack                    = 0;
              EG2Decay2                       = 0.0;
-             EG2InfiniteSustain              = false;
+             EG2InfiniteSustain              = true;
-             EG2PreAttack                    = 1000;
+             EG2PreAttack                    = 0;
              VelocityResponseCurve           = curve_type_nonlinear;
              VelocityResponseDepth           = 3;
              ReleaseVelocityResponseCurve    = curve_type_nonlinear;
-Line 1423 
 namespace {
+Line 1550 
 namespace {
              VCFVelocityDynamicRange         = 0x04;
              VCFVelocityCurve                = curve_type_linear;
              VCFType                         = vcf_type_lowpass;
-             memset(DimensionUpperLimits, 0, 8);
+             memset(DimensionUpperLimits, 127, 8);
          }
          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,
                                                       VelocityResponseDepth,
                                                       VelocityResponseCurveScaling);
-         curve_type_t curveType = ReleaseVelocityResponseCurve;
+         pVelocityReleaseTable = GetReleaseVelocityTable(
-         uint8_t depth = ReleaseVelocityResponseDepth;
+                                     ReleaseVelocityResponseCurve,
+                                     ReleaseVelocityResponseDepth
+                                 );
+         pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve,
+                                                       VCFVelocityDynamicRange,
+                                                       VCFVelocityScale,
+                                                       VCFCutoffController);
-         // this models a strange behaviour or bug in GSt: two of the
+         SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));
-         // velocity response curves for release time are not used even
+         VelocityTable = 0;
-         // if specified, instead another curve is chosen.
+     }
-         if ((curveType == curve_type_nonlinear && depth == 0) ||
-             (curveType == curve_type_special   && depth == 4)) {
-             curveType = curve_type_nonlinear;
-             depth = 3;
-         }
-         pVelocityReleaseTable = GetVelocityTable(curveType, depth, 0);
-         curveType = VCFVelocityCurve;
+     /*
-         depth = VCFVelocityDynamicRange;
+      * Constructs a DimensionRegion by copying all parameters from
+      * another DimensionRegion
+      */
+     DimensionRegion::DimensionRegion(RIFF::List* _3ewl, const DimensionRegion& src) : DLS::Sampler(_3ewl) {
+         Instances++;
+         *this = src; // default memberwise shallow copy of all parameters
+         pParentList = _3ewl; // restore the chunk pointer
-         // even stranger GSt: two of the velocity response curves for
+         // deep copy of owned structures
-         // filter cutoff are not used, instead another special curve
+         if (src.VelocityTable) {
-         // is chosen. This curve is not used anywhere else.
+             VelocityTable = new uint8_t[128];
-         if ((curveType == curve_type_nonlinear && depth == 0) ||
+             for (int k = 0 ; k < 128 ; k++)
-             (curveType == curve_type_special   && depth == 4)) {
+                 VelocityTable[k] = src.VelocityTable[k];
-             curveType = curve_type_special;
-             depth = 5;
          }
-         pVelocityCutoffTable = GetVelocityTable(curveType, depth,
+         if (src.pSampleLoops) {
-                                                 VCFCutoffController <= vcf_cutoff_ctrl_none2 ? VCFVelocityScale : 0);
+             pSampleLoops = new DLS::sample_loop_t[src.SampleLoops];
+             for (int k = 0 ; k < src.SampleLoops ; k++)
+                 pSampleLoops[k] = src.pSampleLoops[k];
+         }
+     }
+     /**
+      * Updates the respective member variable and updates @c SampleAttenuation
+      * which depends on this value.
+      */
+     void DimensionRegion::SetGain(int32_t gain) {
+         DLS::Sampler::SetGain(gain);
          SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));
-         VelocityTable = 0;
      }
      /**
-Line 1472 
 namespace {
+Line 1613 
 namespace {
          // first update base class's chunk
          DLS::Sampler::UpdateChunks();
+         RIFF::Chunk* wsmp = pParentList->GetSubChunk(CHUNK_ID_WSMP);
+         uint8_t* pData = (uint8_t*) wsmp->LoadChunkData();
+         pData[12] = Crossfade.in_start;
+         pData[13] = Crossfade.in_end;
+         pData[14] = Crossfade.out_start;
+         pData[15] = Crossfade.out_end;
          // make sure '3ewa' chunk exists
          RIFF::Chunk* _3ewa = pParentList->GetSubChunk(CHUNK_ID_3EWA);
-         if (!_3ewa)  _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, 140);
+         if (!_3ewa) {
-         uint8_t* pData = (uint8_t*) _3ewa->LoadChunkData();
+             File* pFile = (File*) GetParent()->GetParent()->GetParent();
+             bool version3 = pFile->pVersion && pFile->pVersion->major == 3;
+             _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, version3 ? 148 : 140);
+         }
+         pData = (uint8_t*) _3ewa->LoadChunkData();
          // update '3ewa' chunk with DimensionRegion's current settings
-         const uint32_t chunksize = _3ewa->GetSize();
+         const uint32_t chunksize = _3ewa->GetNewSize();
-         memcpy(&pData[0], &chunksize, 4); // unknown, always chunk size?
+         store32(&pData[0], chunksize); // unknown, always chunk size?
          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);
-         memcpy(&pData[4], &lfo3freq, 4);
+         store32(&pData[4], lfo3freq);
          const int32_t eg3attack = (int32_t) GIG_EXP_ENCODE(EG3Attack);
-         memcpy(&pData[8], &eg3attack, 4);
+         store32(&pData[8], eg3attack);
          // next 2 bytes unknown
-         memcpy(&pData[14], &LFO1InternalDepth, 2);
+         store16(&pData[14], LFO1InternalDepth);
          // next 2 bytes unknown
-         memcpy(&pData[18], &LFO3InternalDepth, 2);
+         store16(&pData[18], LFO3InternalDepth);
          // next 2 bytes unknown
-         memcpy(&pData[22], &LFO1ControlDepth, 2);
+         store16(&pData[22], LFO1ControlDepth);
          // next 2 bytes unknown
-         memcpy(&pData[26], &LFO3ControlDepth, 2);
+         store16(&pData[26], LFO3ControlDepth);
          const int32_t eg1attack = (int32_t) GIG_EXP_ENCODE(EG1Attack);
-         memcpy(&pData[28], &eg1attack, 4);
+         store32(&pData[28], eg1attack);
          const int32_t eg1decay1 = (int32_t) GIG_EXP_ENCODE(EG1Decay1);
-         memcpy(&pData[32], &eg1decay1, 4);
+         store32(&pData[32], eg1decay1);
          // next 2 bytes unknown
-         memcpy(&pData[38], &EG1Sustain, 2);
+         store16(&pData[38], EG1Sustain);
          const int32_t eg1release = (int32_t) GIG_EXP_ENCODE(EG1Release);
-         memcpy(&pData[40], &eg1release, 4);
+         store32(&pData[40], eg1release);
          const uint8_t eg1ctl = (uint8_t) EncodeLeverageController(EG1Controller);
-         memcpy(&pData[44], &eg1ctl, 1);
+         pData[44] = eg1ctl;
          const uint8_t eg1ctrloptions =
-             (EG1ControllerInvert) ? 0x01 : 0x00 |
+             (EG1ControllerInvert ? 0x01 : 0x00) |
              GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG1ControllerAttackInfluence) |
              GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG1ControllerDecayInfluence) |
              GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG1ControllerReleaseInfluence);
-         memcpy(&pData[45], &eg1ctrloptions, 1);
+         pData[45] = eg1ctrloptions;
          const uint8_t eg2ctl = (uint8_t) EncodeLeverageController(EG2Controller);
-         memcpy(&pData[46], &eg2ctl, 1);
+         pData[46] = eg2ctl;
          const uint8_t eg2ctrloptions =
-             (EG2ControllerInvert) ? 0x01 : 0x00 |
+             (EG2ControllerInvert ? 0x01 : 0x00) |
              GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG2ControllerAttackInfluence) |
              GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG2ControllerDecayInfluence) |
              GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG2ControllerReleaseInfluence);
-         memcpy(&pData[47], &eg2ctrloptions, 1);
+         pData[47] = eg2ctrloptions;
          const int32_t lfo1freq = (int32_t) GIG_EXP_ENCODE(LFO1Frequency);
-         memcpy(&pData[48], &lfo1freq, 4);
+         store32(&pData[48], lfo1freq);
          const int32_t eg2attack = (int32_t) GIG_EXP_ENCODE(EG2Attack);
-         memcpy(&pData[52], &eg2attack, 4);
+         store32(&pData[52], eg2attack);
          const int32_t eg2decay1 = (int32_t) GIG_EXP_ENCODE(EG2Decay1);
-         memcpy(&pData[56], &eg2decay1, 4);
+         store32(&pData[56], eg2decay1);
          // next 2 bytes unknown
-         memcpy(&pData[62], &EG2Sustain, 2);
+         store16(&pData[62], EG2Sustain);
          const int32_t eg2release = (int32_t) GIG_EXP_ENCODE(EG2Release);
-         memcpy(&pData[64], &eg2release, 4);
+         store32(&pData[64], eg2release);
          // next 2 bytes unknown
-         memcpy(&pData[70], &LFO2ControlDepth, 2);
+         store16(&pData[70], LFO2ControlDepth);
          const int32_t lfo2freq = (int32_t) GIG_EXP_ENCODE(LFO2Frequency);
-         memcpy(&pData[72], &lfo2freq, 4);
+         store32(&pData[72], lfo2freq);
          // next 2 bytes unknown
-         memcpy(&pData[78], &LFO2InternalDepth, 2);
+         store16(&pData[78], LFO2InternalDepth);
          const int32_t eg1decay2 = (int32_t) (EG1InfiniteSustain) ? 0x7fffffff : (int32_t) GIG_EXP_ENCODE(EG1Decay2);
-         memcpy(&pData[80], &eg1decay2, 4);
+         store32(&pData[80], eg1decay2);
          // next 2 bytes unknown
-         memcpy(&pData[86], &EG1PreAttack, 2);
+         store16(&pData[86], EG1PreAttack);
          const int32_t eg2decay2 = (int32_t) (EG2InfiniteSustain) ? 0x7fffffff : (int32_t) GIG_EXP_ENCODE(EG2Decay2);
-         memcpy(&pData[88], &eg2decay2, 4);
+         store32(&pData[88], eg2decay2);
          // next 2 bytes unknown
-         memcpy(&pData[94], &EG2PreAttack, 2);
+         store16(&pData[94], EG2PreAttack);
          {
              if (VelocityResponseDepth > 4) throw Exception("VelocityResponseDepth must be between 0 and 4");
-Line 1594 
 namespace {
+Line 1746 
 namespace {
                  default:
                      throw Exception("Could not update DimensionRegion's chunk, unknown VelocityResponseCurve selected");
              }
-             memcpy(&pData[96], &velocityresponse, 1);
+             pData[96] = velocityresponse;
          }
          {
-Line 1613 
 namespace {
+Line 1765 
 namespace {
                  default:
                      throw Exception("Could not update DimensionRegion's chunk, unknown ReleaseVelocityResponseCurve selected");
              }
-             memcpy(&pData[97], &releasevelocityresponse, 1);
+             pData[97] = releasevelocityresponse;
          }
-         memcpy(&pData[98], &VelocityResponseCurveScaling, 1);
+         pData[98] = VelocityResponseCurveScaling;
-         memcpy(&pData[99], &AttenuationControllerThreshold, 1);
+         pData[99] = AttenuationControllerThreshold;
          // next 4 bytes unknown
-         memcpy(&pData[104], &SampleStartOffset, 2);
+         store16(&pData[104], SampleStartOffset);
          // next 2 bytes unknown
-Line 1641 
 namespace {
+Line 1793 
 namespace {
                  default:
                      throw Exception("Could not update DimensionRegion's chunk, unknown DimensionBypass selected");
              }
-             memcpy(&pData[108], &pitchTrackDimensionBypass, 1);
+             pData[108] = pitchTrackDimensionBypass;
          }
          const uint8_t pan = (Pan >= 0) ? Pan : ((-Pan) + 63); // signed 8 bit -> signed 7 bit
-         memcpy(&pData[109], &pan, 1);
+         pData[109] = pan;
          const uint8_t selfmask = (SelfMask) ? 0x01 : 0x00;
-         memcpy(&pData[110], &selfmask, 1);
+         pData[110] = selfmask;
          // next byte unknown
-Line 1657 
 namespace {
+Line 1809 
 namespace {
              if (LFO3Sync) lfo3ctrl |= 0x20; // bit 5
              if (InvertAttenuationController) lfo3ctrl |= 0x80; // bit 7
              if (VCFType == vcf_type_lowpassturbo) lfo3ctrl |= 0x40; // bit 6
-             memcpy(&pData[112], &lfo3ctrl, 1);
+             pData[112] = lfo3ctrl;
          }
          const uint8_t attenctl = EncodeLeverageController(AttenuationController);
-         memcpy(&pData[113], &attenctl, 1);
+         pData[113] = attenctl;
          {
              uint8_t lfo2ctrl = LFO2Controller & 0x07; // lower 3 bits
              if (LFO2FlipPhase) lfo2ctrl |= 0x80; // bit 7
              if (LFO2Sync)      lfo2ctrl |= 0x20; // bit 5
              if (VCFResonanceController != vcf_res_ctrl_none) lfo2ctrl |= 0x40; // bit 6
-             memcpy(&pData[114], &lfo2ctrl, 1);
+             pData[114] = lfo2ctrl;
          }
          {
-Line 1677 
 namespace {
+Line 1829 
 namespace {
              if (LFO1Sync)      lfo1ctrl |= 0x40; // bit 6
              if (VCFResonanceController != vcf_res_ctrl_none)
                  lfo1ctrl |= GIG_VCF_RESONANCE_CTRL_ENCODE(VCFResonanceController);
-             memcpy(&pData[115], &lfo1ctrl, 1);
+             pData[115] = lfo1ctrl;
          }
          const uint16_t eg3depth = (EG3Depth >= 0) ? EG3Depth
                                                    : uint16_t(((-EG3Depth) - 1) ^ 0xffff); /* binary complementary for negatives */
-         memcpy(&pData[116], &eg3depth, 1);
+         pData[116] = eg3depth;
          // next 2 bytes unknown
          const uint8_t channeloffset = ChannelOffset * 4;
-         memcpy(&pData[120], &channeloffset, 1);
+         pData[120] = channeloffset;
          {
              uint8_t regoptions = 0;
              if (MSDecode)      regoptions |= 0x01; // bit 0
              if (SustainDefeat) regoptions |= 0x02; // bit 1
-             memcpy(&pData[121], &regoptions, 1);
+             pData[121] = regoptions;
          }
          // next 2 bytes unknown
-         memcpy(&pData[124], &VelocityUpperLimit, 1);
+         pData[124] = VelocityUpperLimit;
          // next 3 bytes unknown
-         memcpy(&pData[128], &ReleaseTriggerDecay, 1);
+         pData[128] = ReleaseTriggerDecay;
          // next 2 bytes unknown
          const uint8_t eg1hold = (EG1Hold) ? 0x80 : 0x00; // bit 7
-         memcpy(&pData[131], &eg1hold, 1);
+         pData[131] = eg1hold;
-         const uint8_t vcfcutoff = (VCFEnabled) ? 0x80 : 0x00 |  /* bit 7 */
+         const uint8_t vcfcutoff = (VCFEnabled ? 0x80 : 0x00) |  /* bit 7 */
                                    (VCFCutoff & 0x7f);   /* lower 7 bits */
-         memcpy(&pData[132], &vcfcutoff, 1);
+         pData[132] = vcfcutoff;
-         memcpy(&pData[133], &VCFCutoffController, 1);
+         pData[133] = VCFCutoffController;
-         const uint8_t vcfvelscale = (VCFCutoffControllerInvert) ? 0x80 : 0x00 | /* bit 7 */
+         const uint8_t vcfvelscale = (VCFCutoffControllerInvert ? 0x80 : 0x00) | /* bit 7 */
                                      (VCFVelocityScale & 0x7f); /* lower 7 bits */
-         memcpy(&pData[134], &vcfvelscale, 1);
+         pData[134] = vcfvelscale;
          // next byte unknown
-         const uint8_t vcfresonance = (VCFResonanceDynamic) ? 0x00 : 0x80 | /* bit 7 */
+         const uint8_t vcfresonance = (VCFResonanceDynamic ? 0x00 : 0x80) | /* bit 7 */
                                       (VCFResonance & 0x7f); /* lower 7 bits */
-         memcpy(&pData[136], &vcfresonance, 1);
+         pData[136] = vcfresonance;
-         const uint8_t vcfbreakpoint = (VCFKeyboardTracking) ? 0x80 : 0x00 | /* bit 7 */
+         const uint8_t vcfbreakpoint = (VCFKeyboardTracking ? 0x80 : 0x00) | /* bit 7 */
                                        (VCFKeyboardTrackingBreakpoint & 0x7f); /* lower 7 bits */
-         memcpy(&pData[137], &vcfbreakpoint, 1);
+         pData[137] = vcfbreakpoint;
          const uint8_t vcfvelocity = VCFVelocityDynamicRange % 5 |
                                      VCFVelocityCurve * 5;
-         memcpy(&pData[138], &vcfvelocity, 1);
+         pData[138] = vcfvelocity;
          const uint8_t vcftype = (VCFType == vcf_type_lowpassturbo) ? vcf_type_lowpass : VCFType;
-         memcpy(&pData[139], &vcftype, 1);
+         pData[139] = vcftype;
          if (chunksize >= 148) {
              memcpy(&pData[140], DimensionUpperLimits, 8);
          }
      }
+     double* DimensionRegion::GetReleaseVelocityTable(curve_type_t releaseVelocityResponseCurve, uint8_t releaseVelocityResponseDepth) {
+         curve_type_t curveType = releaseVelocityResponseCurve;
+         uint8_t depth = releaseVelocityResponseDepth;
+         // this models a strange behaviour or bug in GSt: two of the
+         // velocity response curves for release time are not used even
+         // if specified, instead another curve is chosen.
+         if ((curveType == curve_type_nonlinear && depth == 0) ||
+             (curveType == curve_type_special   && depth == 4)) {
+             curveType = curve_type_nonlinear;
+             depth = 3;
+         }
+         return GetVelocityTable(curveType, depth, 0);
+     }
+     double* DimensionRegion::GetCutoffVelocityTable(curve_type_t vcfVelocityCurve,
+                                                     uint8_t vcfVelocityDynamicRange,
+                                                     uint8_t vcfVelocityScale,
+                                                     vcf_cutoff_ctrl_t vcfCutoffController)
+     {
+         curve_type_t curveType = vcfVelocityCurve;
+         uint8_t depth = vcfVelocityDynamicRange;
+         // even stranger GSt: two of the velocity response curves for
+         // filter cutoff are not used, instead another special curve
+         // is chosen. This curve is not used anywhere else.
+         if ((curveType == curve_type_nonlinear && depth == 0) ||
+             (curveType == curve_type_special   && depth == 4)) {
+             curveType = curve_type_special;
+             depth = 5;
+         }
+         return GetVelocityTable(curveType, depth,
+                                 (vcfCutoffController <= vcf_cutoff_ctrl_none2)
+                                     ? vcfVelocityScale : 0);
+     }
      // get the corresponding velocity table from the table map or create & calculate that table if it doesn't exist yet
      double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling)
      {
-Line 1756 
 namespace {
+Line 1942 
 namespace {
          return table;
      }
+     Region* DimensionRegion::GetParent() const {
+         return pRegion;
+     }
      leverage_ctrl_t DimensionRegion::DecodeLeverageController(_lev_ctrl_t EncodedController) {
          leverage_ctrl_t decodedcontroller;
          switch (EncodedController) {
-Line 1963 
 namespace {
+Line 2153 
 namespace {
                      default:
                          throw gig::Exception("leverage controller number is not supported by the gig format");
                  }
+                 break;
              default:
                  throw gig::Exception("Unknown leverage controller type.");
          }
-Line 2008 
 namespace {
+Line 2199 
 namespace {
          return pVelocityCutoffTable[MIDIKeyVelocity];
      }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVelocityResponseCurve(curve_type_t curve) {
+         pVelocityAttenuationTable =
+             GetVelocityTable(
+                 curve, VelocityResponseDepth, VelocityResponseCurveScaling
+             );
+         VelocityResponseCurve = curve;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVelocityResponseDepth(uint8_t depth) {
+         pVelocityAttenuationTable =
+             GetVelocityTable(
+                 VelocityResponseCurve, depth, VelocityResponseCurveScaling
+             );
+         VelocityResponseDepth = depth;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVelocityResponseCurveScaling(uint8_t scaling) {
+         pVelocityAttenuationTable =
+             GetVelocityTable(
+                 VelocityResponseCurve, VelocityResponseDepth, scaling
+             );
+         VelocityResponseCurveScaling = scaling;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetReleaseVelocityResponseCurve(curve_type_t curve) {
+         pVelocityReleaseTable = GetReleaseVelocityTable(curve, ReleaseVelocityResponseDepth);
+         ReleaseVelocityResponseCurve = curve;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetReleaseVelocityResponseDepth(uint8_t depth) {
+         pVelocityReleaseTable = GetReleaseVelocityTable(ReleaseVelocityResponseCurve, depth);
+         ReleaseVelocityResponseDepth = depth;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVCFCutoffController(vcf_cutoff_ctrl_t controller) {
+         pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, VCFVelocityDynamicRange, VCFVelocityScale, controller);
+         VCFCutoffController = controller;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVCFVelocityCurve(curve_type_t curve) {
+         pVelocityCutoffTable = GetCutoffVelocityTable(curve, VCFVelocityDynamicRange, VCFVelocityScale, VCFCutoffController);
+         VCFVelocityCurve = curve;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVCFVelocityDynamicRange(uint8_t range) {
+         pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, range, VCFVelocityScale, VCFCutoffController);
+         VCFVelocityDynamicRange = range;
+     }
+     /**
+      * Updates the respective member variable and the lookup table / cache
+      * that depends on this value.
+      */
+     void DimensionRegion::SetVCFVelocityScale(uint8_t scaling) {
+         pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, VCFVelocityDynamicRange, scaling, VCFCutoffController);
+         VCFVelocityScale = scaling;
+     }
      double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) {
          // line-segment approximations of the 15 velocity curves
-Line 2080 
 namespace {
+Line 2361 
 namespace {
  // *
      Region::Region(Instrument* pInstrument, RIFF::List* rgnList) : DLS::Region((DLS::Instrument*) pInstrument, rgnList) {
-         pInfo->UseFixedLengthStrings = true;
          // Initialization
          Dimensions = 0;
          for (int i = 0; i < 256; i++) {
-Line 2093 
 namespace {
+Line 2372 
 namespace {
          // Actual Loading
+         if (!file->GetAutoLoad()) return;
          LoadDimensionRegions(rgnList);
          RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK);
-Line 2101 
 namespace {
+Line 2382 
 namespace {
              for (int i = 0; i < dimensionBits; i++) {
                  dimension_t dimension = static_cast<dimension_t>(_3lnk->ReadUint8());
                  uint8_t     bits      = _3lnk->ReadUint8();
-                 _3lnk->ReadUint8(); // probably the position of the dimension
+                 _3lnk->ReadUint8(); // bit position of the dimension (bits[0] + bits[1] + ... + bits[i-1])
-                 _3lnk->ReadUint8(); // unknown
+                 _3lnk->ReadUint8(); // (1 << bit position of next dimension) - (1 << bit position of this dimension)
                  uint8_t     zones     = _3lnk->ReadUint8(); // new for v3: number of zones doesn't have to be == pow(2,bits)
                  if (dimension == dimension_none) { // inactive dimension
                      pDimensionDefinitions[i].dimension  = dimension_none;
-Line 2115 
 namespace {
+Line 2396 
 namespace {
                      pDimensionDefinitions[i].dimension = dimension;
                      pDimensionDefinitions[i].bits      = bits;
                      pDimensionDefinitions[i].zones     = zones ? zones : 0x01 << bits; // = pow(2,bits)
-                     pDimensionDefinitions[i].split_type = (dimension == dimension_layer ||
+                     pDimensionDefinitions[i].split_type = __resolveSplitType(dimension);
-                                                            dimension == dimension_samplechannel ||
+                     pDimensionDefinitions[i].zone_size  = __resolveZoneSize(pDimensionDefinitions[i]);
-                                                            dimension == dimension_releasetrigger ||
-                                                            dimension == dimension_keyboard ||
-                                                            dimension == dimension_roundrobin ||
-                                                            dimension == dimension_random ||
-                                                            dimension == dimension_smartmidi ||
-                                                            dimension == dimension_roundrobinkeyboard) ? split_type_bit
-                                                                                                       : split_type_normal;
-                     pDimensionDefinitions[i].zone_size  =
-                         (pDimensionDefinitions[i].split_type == split_type_normal) ? 128.0 / pDimensionDefinitions[i].zones
-                                                                                    : 0;
                      Dimensions++;
                      // if this is a layer dimension, remember the amount of layers
-Line 2146 
 namespace {
+Line 2417 
 namespace {
              else
                  _3lnk->SetPos(44);
-             // load sample references
+             // load sample references (if auto loading is enabled)
-             for (uint i = 0; i < DimensionRegions; i++) {
+             if (file->GetAutoLoad()) {
-                 uint32_t wavepoolindex = _3lnk->ReadUint32();
+                 for (uint i = 0; i < DimensionRegions; i++) {
-                 if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);
+                     uint32_t wavepoolindex = _3lnk->ReadUint32();
+                     if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);
+                 }
+                 GetSample(); // load global region sample reference
              }
-             GetSample(); // load global region sample reference
          } else {
              DimensionRegions = 0;
+             for (int i = 0 ; i < 8 ; i++) {
+                 pDimensionDefinitions[i].dimension  = dimension_none;
+                 pDimensionDefinitions[i].bits       = 0;
+                 pDimensionDefinitions[i].zones      = 0;
+             }
          }
          // make sure there is at least one dimension region
-Line 2161 
 namespace {
+Line 2439 
 namespace {
              RIFF::List* _3prg = rgnList->GetSubList(LIST_TYPE_3PRG);
              if (!_3prg) _3prg = rgnList->AddSubList(LIST_TYPE_3PRG);
              RIFF::List* _3ewl = _3prg->AddSubList(LIST_TYPE_3EWL);
-             pDimensionRegions[0] = new DimensionRegion(_3ewl);
+             pDimensionRegions[0] = new DimensionRegion(this, _3ewl);
              DimensionRegions = 1;
          }
      }
-Line 2176 
 namespace {
+Line 2454 
 namespace {
       * @throws gig::Exception if samples cannot be dereferenced
       */
      void Region::UpdateChunks() {
+         // in the gig format we don't care about the Region's sample reference
+         // but we still have to provide some existing one to not corrupt the
+         // file, so to avoid the latter we simply always assign the sample of
+         // the first dimension region of this region
+         pSample = pDimensionRegions[0]->pSample;
          // first update base class's chunks
          DLS::Region::UpdateChunks();
-Line 2185 
 namespace {
+Line 2469 
 namespace {
          }
          File* pFile = (File*) GetParent()->GetParent();
-         const int iMaxDimensions = (pFile->pVersion && pFile->pVersion->major == 3) ? 8 : 5;
+         bool version3 = pFile->pVersion && pFile->pVersion->major == 3;
-         const int iMaxDimensionRegions = (pFile->pVersion && pFile->pVersion->major == 3) ? 256 : 32;
+         const int iMaxDimensions =  version3 ? 8 : 5;
+         const int iMaxDimensionRegions = version3 ? 256 : 32;
          // make sure '3lnk' chunk exists
          RIFF::Chunk* _3lnk = pCkRegion->GetSubChunk(CHUNK_ID_3LNK);
          if (!_3lnk) {
-             const int _3lnkChunkSize = (pFile->pVersion && pFile->pVersion->major == 3) ? 1092 : 172;
+             const int _3lnkChunkSize = version3 ? 1092 : 172;
              _3lnk = pCkRegion->AddSubChunk(CHUNK_ID_3LNK, _3lnkChunkSize);
+             memset(_3lnk->LoadChunkData(), 0, _3lnkChunkSize);
+             // move 3prg to last position
+             pCkRegion->MoveSubChunk(pCkRegion->GetSubList(LIST_TYPE_3PRG), 0);
          }
          // update dimension definitions in '3lnk' chunk
          uint8_t* pData = (uint8_t*) _3lnk->LoadChunkData();
-         memcpy(&pData[0], &DimensionRegions, 4);
+         store32(&pData[0], DimensionRegions);
+         int shift = 0;
          for (int i = 0; i < iMaxDimensions; i++) {
              pData[4 + i * 8] = (uint8_t) pDimensionDefinitions[i].dimension;
              pData[5 + i * 8] = pDimensionDefinitions[i].bits;
-             // next 2 bytes unknown
+             pData[6 + i * 8] = pDimensionDefinitions[i].dimension == dimension_none ? 0 : shift;
+             pData[7 + i * 8] = (1 << (shift + pDimensionDefinitions[i].bits)) - (1 << shift);
              pData[8 + i * 8] = pDimensionDefinitions[i].zones;
-             // next 3 bytes unknown
+             // next 3 bytes unknown, always zero?
+             shift += pDimensionDefinitions[i].bits;
          }
          // update wave pool table in '3lnk' chunk
-         const int iWavePoolOffset = (pFile->pVersion && pFile->pVersion->major == 3) ? 68 : 44;
+         const int iWavePoolOffset = version3 ? 68 : 44;
          for (uint i = 0; i < iMaxDimensionRegions; i++) {
              int iWaveIndex = -1;
              if (i < DimensionRegions) {
-Line 2220 
 namespace {
+Line 2513 
 namespace {
                          break;
                      }
                  }
-                 if (iWaveIndex < 0) throw gig::Exception("Could not update gig::Region, could not find DimensionRegion's sample");
              }
-             memcpy(&pData[iWavePoolOffset + i * 4], &iWaveIndex, 4);
+             store32(&pData[iWavePoolOffset + i * 4], iWaveIndex);
          }
      }
-Line 2233 
 namespace {
+Line 2525 
 namespace {
              RIFF::List* _3ewl = _3prg->GetFirstSubList();
              while (_3ewl) {
                  if (_3ewl->GetListType() == LIST_TYPE_3EWL) {
-                     pDimensionRegions[dimensionRegionNr] = new DimensionRegion(_3ewl);
+                     pDimensionRegions[dimensionRegionNr] = new DimensionRegion(this, _3ewl);
                      dimensionRegionNr++;
                  }
                  _3ewl = _3prg->GetNextSubList();
-Line 2242 
 namespace {
+Line 2534 
 namespace {
          }
      }
+     void Region::SetKeyRange(uint16_t Low, uint16_t High) {
+         // update KeyRange struct and make sure regions are in correct order
+         DLS::Region::SetKeyRange(Low, High);
+         // update Region key table for fast lookup
+         ((gig::Instrument*)GetParent())->UpdateRegionKeyTable();
+     }
      void Region::UpdateVelocityTable() {
          // get velocity dimension's index
          int veldim = -1;
-Line 2347 
 namespace {
+Line 2646 
 namespace {
              if (pDimensionDefinitions[i].dimension == pDimDef->dimension)
                  throw gig::Exception("Could not add new dimension, there is already a dimension of the same type");
+         // pos is where the new dimension should be placed, normally
+         // last in list, except for the samplechannel dimension which
+         // has to be first in list
+         int pos = pDimDef->dimension == dimension_samplechannel ? 0 : Dimensions;
+         int bitpos = 0;
+         for (int i = 0 ; i < pos ; i++)
+             bitpos += pDimensionDefinitions[i].bits;
+         // make room for the new dimension
+         for (int i = Dimensions ; i > pos ; i--) pDimensionDefinitions[i] = pDimensionDefinitions[i - 1];
+         for (int i = 0 ; i < (1 << iCurrentBits) ; i++) {
+             for (int j = Dimensions ; j > pos ; j--) {
+                 pDimensionRegions[i]->DimensionUpperLimits[j] =
+                     pDimensionRegions[i]->DimensionUpperLimits[j - 1];
+             }
+         }
          // assign definition of new dimension
-         pDimensionDefinitions[Dimensions] = *pDimDef;
+         pDimensionDefinitions[pos] = *pDimDef;
-         // create new dimension region(s) for this new dimension
+         // auto correct certain dimension definition fields (where possible)
-         for (int i = 1 << iCurrentBits; i < 1 << iNewBits; i++) {
+         pDimensionDefinitions[pos].split_type  =
-             //TODO: maybe we should copy existing dimension regions if possible instead of simply creating new ones with default values
+             __resolveSplitType(pDimensionDefinitions[pos].dimension);
-             RIFF::List* pNewDimRgnListChunk = pCkRegion->AddSubList(LIST_TYPE_3EWL);
+         pDimensionDefinitions[pos].zone_size =
-             pDimensionRegions[i] = new DimensionRegion(pNewDimRgnListChunk);
+             __resolveZoneSize(pDimensionDefinitions[pos]);
-             DimensionRegions++;
+         // create new dimension region(s) for this new dimension, and make
+         // sure that the dimension regions are placed correctly in both the
+         // RIFF list and the pDimensionRegions array
+         RIFF::Chunk* moveTo = NULL;
+         RIFF::List* _3prg = pCkRegion->GetSubList(LIST_TYPE_3PRG);
+         for (int i = (1 << iCurrentBits) - (1 << bitpos) ; i >= 0 ; i -= (1 << bitpos)) {
+             for (int k = 0 ; k < (1 << bitpos) ; k++) {
+                 pDimensionRegions[(i << pDimDef->bits) + k] = pDimensionRegions[i + k];
+             }
+             for (int j = 1 ; j < (1 << pDimDef->bits) ; j++) {
+                 for (int k = 0 ; k < (1 << bitpos) ; k++) {
+                     RIFF::List* pNewDimRgnListChunk = _3prg->AddSubList(LIST_TYPE_3EWL);
+                     if (moveTo) _3prg->MoveSubChunk(pNewDimRgnListChunk, moveTo);
+                     // create a new dimension region and copy all parameter values from
+                     // an existing dimension region
+                     pDimensionRegions[(i << pDimDef->bits) + (j << bitpos) + k] =
+                         new DimensionRegion(pNewDimRgnListChunk, *pDimensionRegions[i + k]);
+                     DimensionRegions++;
+                 }
+             }
+             moveTo = pDimensionRegions[i]->pParentList;
+         }
+         // initialize the upper limits for this dimension
+         int mask = (1 << bitpos) - 1;
+         for (int z = 0 ; z < pDimDef->zones ; z++) {
+             uint8_t upperLimit = uint8_t((z + 1) * 128.0 / pDimDef->zones - 1);
+             for (int i = 0 ; i < 1 << iCurrentBits ; i++) {
+                 pDimensionRegions[((i & ~mask) << pDimDef->bits) |
+                                   (z << bitpos) |
+                                   (i & mask)]->DimensionUpperLimits[pos] = upperLimit;
+             }
          }
          Dimensions++;
-Line 2398 
 namespace {
+Line 2747 
 namespace {
          for (int i = iDimensionNr + 1; i < Dimensions; i++)
              iUpperBits += pDimensionDefinitions[i].bits;
+         RIFF::List* _3prg = pCkRegion->GetSubList(LIST_TYPE_3PRG);
          // delete dimension regions which belong to the given dimension
          // (that is where the dimension's bit > 0)
          for (int iUpperBit = 0; iUpperBit < 1 << iUpperBits; iUpperBit++) {
-Line 2406 
 namespace {
+Line 2757 
 namespace {
                      int iToDelete = iUpperBit    << (pDimensionDefinitions[iDimensionNr].bits + iLowerBits) |
                                      iObsoleteBit << iLowerBits |
                                      iLowerBit;
+                     _3prg->DeleteSubChunk(pDimensionRegions[iToDelete]->pParentList);
                      delete pDimensionRegions[iToDelete];
                      pDimensionRegions[iToDelete] = NULL;
                      DimensionRegions--;
-Line 2426 
 namespace {
+Line 2779 
 namespace {
              }
          }
+         // remove the this dimension from the upper limits arrays
+         for (int j = 0 ; j < 256 && pDimensionRegions[j] ; j++) {
+             DimensionRegion* d = pDimensionRegions[j];
+             for (int i = iDimensionNr + 1; i < Dimensions; i++) {
+                 d->DimensionUpperLimits[i - 1] = d->DimensionUpperLimits[i];
+             }
+             d->DimensionUpperLimits[Dimensions - 1] = 127;
+         }
          // 'remove' dimension definition
          for (int i = iDimensionNr + 1; i < Dimensions; i++) {
              pDimensionDefinitions[i - 1] = pDimensionDefinitions[i];
-Line 2561 
 namespace {
+Line 2923 
 namespace {
      }
+ // *************** MidiRule ***************
+ // *
+ MidiRuleCtrlTrigger::MidiRuleCtrlTrigger(RIFF::Chunk* _3ewg) {
+     _3ewg->SetPos(36);
+     Triggers = _3ewg->ReadUint8();
+     _3ewg->SetPos(40);
+     ControllerNumber = _3ewg->ReadUint8();
+     _3ewg->SetPos(46);
+     for (int i = 0 ; i < Triggers ; i++) {
+         pTriggers[i].TriggerPoint = _3ewg->ReadUint8();
+         pTriggers[i].Descending = _3ewg->ReadUint8();
+         pTriggers[i].VelSensitivity = _3ewg->ReadUint8();
+         pTriggers[i].Key = _3ewg->ReadUint8();
+         pTriggers[i].NoteOff = _3ewg->ReadUint8();
+         pTriggers[i].Velocity = _3ewg->ReadUint8();
+         pTriggers[i].OverridePedal = _3ewg->ReadUint8();
+         _3ewg->ReadUint8();
+     }
+ }
  // *************** Instrument ***************
  // *
      Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) {
-         pInfo->UseFixedLengthStrings = true;
+         static const DLS::Info::string_length_t fixedStringLengths[] = {
+             { CHUNK_ID_INAM, 64 },
+             { CHUNK_ID_ISFT, 12 },
+             { 0, 0 }
+         };
+         pInfo->SetFixedStringLengths(fixedStringLengths);
          // Initialization
          for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;
+         EffectSend = 0;
+         Attenuation = 0;
+         FineTune = 0;
+         PitchbendRange = 0;
+         PianoReleaseMode = false;
+         DimensionKeyRange.low = 0;
+         DimensionKeyRange.high = 0;
          // Loading
          RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART);
-Line 2584 
 namespace {
+Line 2979 
 namespace {
                  PianoReleaseMode       = dimkeystart & 0x01;
                  DimensionKeyRange.low  = dimkeystart >> 1;
                  DimensionKeyRange.high = _3ewg->ReadUint8();
+                 if (_3ewg->GetSize() > 32) {
+                     // read MIDI rules
+                     _3ewg->SetPos(32);
+                     uint8_t id1 = _3ewg->ReadUint8();
+                     uint8_t id2 = _3ewg->ReadUint8();
+                     if (id1 == 4 && id2 == 16) {
+                         MidiRules.push_back(new MidiRuleCtrlTrigger(_3ewg));
+                     }
+                     //TODO: all the other types of rules
+                 }
              }
          }
-         if (!pRegions) pRegions = new RegionList;
+         if (pFile->GetAutoLoad()) {
-         RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN);
+             if (!pRegions) pRegions = new RegionList;
-         if (lrgn) {
+             RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN);
-             RIFF::List* rgn = lrgn->GetFirstSubList();
+             if (lrgn) {
-             while (rgn) {
+                 RIFF::List* rgn = lrgn->GetFirstSubList();
-                 if (rgn->GetListType() == LIST_TYPE_RGN) {
+                 while (rgn) {
-                     __notify_progress(pProgress, (float) pRegions->size() / (float) Regions);
+                     if (rgn->GetListType() == LIST_TYPE_RGN) {
-                     pRegions->push_back(new Region(this, rgn));
+                         __notify_progress(pProgress, (float) pRegions->size() / (float) Regions);
+                         pRegions->push_back(new Region(this, rgn));
+                     }
+                     rgn = lrgn->GetNextSubList();
                  }
-                 rgn = lrgn->GetNextSubList();
+                 // Creating Region Key Table for fast lookup
+                 UpdateRegionKeyTable();
              }
-             // Creating Region Key Table for fast lookup
-             UpdateRegionKeyTable();
          }
          __notify_progress(pProgress, 1.0f); // notify done
      }
      void Instrument::UpdateRegionKeyTable() {
+         for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;
          RegionList::iterator iter = pRegions->begin();
          RegionList::iterator end  = pRegions->end();
          for (; iter != end; ++iter) {
-Line 2645 
 namespace {
+Line 3055 
 namespace {
          if (!lart)  lart = pCkInstrument->AddSubList(LIST_TYPE_LART);
          // make sure '3ewg' RIFF chunk exists
          RIFF::Chunk* _3ewg = lart->GetSubChunk(CHUNK_ID_3EWG);
-         if (!_3ewg)  _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, 12);
+         if (!_3ewg)  {
+             File* pFile = (File*) GetParent();
+             // 3ewg is bigger in gig3, as it includes the iMIDI rules
+             int size = (pFile->pVersion && pFile->pVersion->major == 3) ? 16416 : 12;
+             _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, size);
+             memset(_3ewg->LoadChunkData(), 0, size);
+         }
          // update '3ewg' RIFF chunk
          uint8_t* pData = (uint8_t*) _3ewg->LoadChunkData();
-         memcpy(&pData[0], &EffectSend, 2);
+         store16(&pData[0], EffectSend);
-         memcpy(&pData[2], &Attenuation, 4);
+         store32(&pData[2], Attenuation);
-         memcpy(&pData[6], &FineTune, 2);
+         store16(&pData[6], FineTune);
-         memcpy(&pData[8], &PitchbendRange, 2);
+         store16(&pData[8], PitchbendRange);
-         const uint8_t dimkeystart = (PianoReleaseMode) ? 0x01 : 0x00 |
+         const uint8_t dimkeystart = (PianoReleaseMode ? 0x01 : 0x00) |
                                      DimensionKeyRange.low << 1;
-         memcpy(&pData[10], &dimkeystart, 1);
+         pData[10] = dimkeystart;
-         memcpy(&pData[11], &DimensionKeyRange.high, 1);
+         pData[11] = DimensionKeyRange.high;
      }
      /**
-Line 2666 
 namespace {
+Line 3083 
 namespace {
       *             there is no Region defined for the given \a Key
       */
      Region* Instrument::GetRegion(unsigned int Key) {
-         if (!pRegions || !pRegions->size() || Key > 127) return NULL;
+         if (!pRegions || pRegions->empty() || Key > 127) return NULL;
          return RegionKeyTable[Key];
          /*for (int i = 0; i < Regions; i++) {
-Line 2724 
 namespace {
+Line 3141 
 namespace {
          UpdateRegionKeyTable();
      }
+     /**
+      * Returns the first MIDI rule of the instrument. You have to call
+      * this method once before you use GetNextMidiRule().
+      *
+      * The list of MIDI rules, at least in gig v3, always contains at
+      * most two rules. The second rule can only be the DEF filter
+      * (which currently isn't supported by libgig).
+      *
+      * @returns  pointer address to first MIDI rule or NULL if there is none
+      * @see      GetNextMidiRule()
+      */
+     MidiRule* Instrument::GetFirstMidiRule() {
+         MidiRulesIterator = MidiRules.begin();
+         return MidiRulesIterator != MidiRules.end() ? *MidiRulesIterator : NULL;
+     }
+     /**
+      * Returns the next MIDI rule of the instrument. You have to call
+      * GetFirstMidiRule() once before you can use this method. By
+      * calling this method multiple times it iterates through the
+      * available rules.
+      *
+      * @returns  pointer address to the next MIDI rule or NULL if end reached
+      * @see      GetFirstMidiRule()
+      */
+     MidiRule* Instrument::GetNextMidiRule() {
+         MidiRulesIterator++;
+         return MidiRulesIterator != MidiRules.end() ? *MidiRulesIterator : NULL;
+     }
  // *************** Group ***************
-Line 2757 
 namespace {
+Line 3203 
 namespace {
      void Group::UpdateChunks() {
          // make sure <3gri> and <3gnl> list chunks exist
          RIFF::List* _3gri = pFile->pRIFF->GetSubList(LIST_TYPE_3GRI);
-         if (!_3gri) _3gri = pFile->pRIFF->AddSubList(LIST_TYPE_3GRI);
+         if (!_3gri) {
+             _3gri = pFile->pRIFF->AddSubList(LIST_TYPE_3GRI);
+             pFile->pRIFF->MoveSubChunk(_3gri, pFile->pRIFF->GetSubChunk(CHUNK_ID_PTBL));
+         }
          RIFF::List* _3gnl = _3gri->GetSubList(LIST_TYPE_3GNL);
-         if (!_3gnl) _3gnl = pFile->pRIFF->AddSubList(LIST_TYPE_3GNL);
+         if (!_3gnl) _3gnl = _3gri->AddSubList(LIST_TYPE_3GNL);
+         if (!pNameChunk && pFile->pVersion && pFile->pVersion->major == 3) {
+             // v3 has a fixed list of 128 strings, find a free one
+             for (RIFF::Chunk* ck = _3gnl->GetFirstSubChunk() ; ck ; ck = _3gnl->GetNextSubChunk()) {
+                 if (strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) {
+                     pNameChunk = ck;
+                     break;
+                 }
+             }
+         }
          // now store the name of this group as <3gnm> chunk as subchunk of the <3gnl> list chunk
          ::SaveString(CHUNK_ID_3GNM, pNameChunk, _3gnl, Name, String("Unnamed Group"), true, 64);
      }
-Line 2835 
 namespace {
+Line 3295 
 namespace {
  // *************** File ***************
  // *
+     /// Reflects Gigasampler file format version 2.0 (1998-06-28).
+     const DLS::version_t File::VERSION_2 = {
+, 2, 19980628 & 0xffff, 19980628 >> 16
+     };
+     /// Reflects Gigasampler file format version 3.0 (2003-03-31).
+     const DLS::version_t File::VERSION_3 = {
+, 3, 20030331 & 0xffff, 20030331 >> 16
+     };
+     static const DLS::Info::string_length_t _FileFixedStringLengths[] = {
+         { CHUNK_ID_IARL, 256 },
+         { CHUNK_ID_IART, 128 },
+         { CHUNK_ID_ICMS, 128 },
+         { CHUNK_ID_ICMT, 1024 },
+         { CHUNK_ID_ICOP, 128 },
+         { CHUNK_ID_ICRD, 128 },
+         { CHUNK_ID_IENG, 128 },
+         { CHUNK_ID_IGNR, 128 },
+         { CHUNK_ID_IKEY, 128 },
+         { CHUNK_ID_IMED, 128 },
+         { CHUNK_ID_INAM, 128 },
+         { CHUNK_ID_IPRD, 128 },
+         { CHUNK_ID_ISBJ, 128 },
+         { CHUNK_ID_ISFT, 128 },
+         { CHUNK_ID_ISRC, 128 },
+         { CHUNK_ID_ISRF, 128 },
+         { CHUNK_ID_ITCH, 128 },
+         { 0, 0 }
+     };
      File::File() : DLS::File() {
+         bAutoLoad = true;
+         *pVersion = VERSION_3;
          pGroups = NULL;
-         pInfo->UseFixedLengthStrings = true;
+         pInfo->SetFixedStringLengths(_FileFixedStringLengths);
+         pInfo->ArchivalLocation = String(256, ' ');
+         // add some mandatory chunks to get the file chunks in right
+         // order (INFO chunk will be moved to first position later)
+         pRIFF->AddSubChunk(CHUNK_ID_VERS, 8);
+         pRIFF->AddSubChunk(CHUNK_ID_COLH, 4);
+         pRIFF->AddSubChunk(CHUNK_ID_DLID, 16);
+         GenerateDLSID();
      }
      File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) {
+         bAutoLoad = true;
          pGroups = NULL;
-         pInfo->UseFixedLengthStrings = true;
+         pInfo->SetFixedStringLengths(_FileFixedStringLengths);
      }
      File::~File() {
-Line 2884 
 namespace {
+Line 3387 
 namespace {
         // create new Sample object and its respective 'wave' list chunk
         RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);
         Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);
+        // add mandatory chunks to get the chunks in right order
+        wave->AddSubChunk(CHUNK_ID_FMT, 16);
+        wave->AddSubList(LIST_TYPE_INFO);
         pSamples->push_back(pSample);
         return pSample;
      }
      /** @brief Delete a sample.
       *
-      * This will delete the given Sample object from the gig file. You have
+      * This will delete the given Sample object from the gig file. Any
-      * to call Save() to make this persistent to the file.
+      * references to this sample from Regions and DimensionRegions will be
+      * removed. You have to call Save() to make this persistent to the file.
       *
       * @param pSample - sample to delete
       * @throws gig::Exception if given sample could not be found
-Line 2903 
 namespace {
+Line 3412 
 namespace {
          if (SamplesIterator != pSamples->end() && *SamplesIterator == pSample) ++SamplesIterator; // avoid iterator invalidation
          pSamples->erase(iter);
          delete pSample;
+         // remove all references to the sample
+         for (Instrument* instrument = GetFirstInstrument() ; instrument ;
+              instrument = GetNextInstrument()) {
+             for (Region* region = instrument->GetFirstRegion() ; region ;
+                  region = instrument->GetNextRegion()) {
+                 if (region->GetSample() == pSample) region->SetSample(NULL);
+                 for (int i = 0 ; i < region->DimensionRegions ; i++) {
+                     gig::DimensionRegion *d = region->pDimensionRegions[i];
+                     if (d->pSample == pSample) d->pSample = NULL;
+                 }
+             }
+         }
      }
      void File::LoadSamples() {
-Line 2912 
 namespace {
+Line 3436 
 namespace {
      void File::LoadSamples(progress_t* pProgress) {
          // Groups must be loaded before samples, because samples will try
          // to resolve the group they belong to
-         LoadGroups();
+         if (!pGroups) LoadGroups();
          if (!pSamples) pSamples = new SampleList;
-Line 2993 
 namespace {
+Line 3517 
 namespace {
              progress_t subprogress;
              __divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask
              __notify_progress(&subprogress, 0.0f);
-             GetFirstSample(&subprogress); // now force all samples to be loaded
+             if (GetAutoLoad())
+                 GetFirstSample(&subprogress); // now force all samples to be loaded
              __notify_progress(&subprogress, 1.0f);
              // instrument loading subtask
-Line 3026 
 namespace {
+Line 3551 
 namespace {
         __ensureMandatoryChunksExist();
         RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
         RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);
+        // add mandatory chunks to get the chunks in right order
+        lstInstr->AddSubList(LIST_TYPE_INFO);
+        lstInstr->AddSubChunk(CHUNK_ID_DLID, 16);
         Instrument* pInstrument = new Instrument(this, lstInstr);
+        pInstrument->GenerateDLSID();
+        lstInstr->AddSubChunk(CHUNK_ID_INSH, 12);
+        // this string is needed for the gig to be loadable in GSt:
+        pInstrument->pInfo->Software = "Endless Wave";
         pInstruments->push_back(pInstrument);
         return pInstrument;
      }
-Line 3077 
 namespace {
+Line 3614 
 namespace {
          }
      }
+     /// Updates the 3crc chunk with the checksum of a sample. The
+     /// update is done directly to disk, as this method is called
+     /// after File::Save()
+     void File::SetSampleChecksum(Sample* pSample, uint32_t crc) {
+         RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
+         if (!_3crc) return;
+         // get the index of the sample
+         int iWaveIndex = -1;
+         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;
+             }
+         }
+         if (iWaveIndex < 0) throw gig::Exception("Could not update crc, could not find sample");
+         // write the CRC-32 checksum to disk
+         _3crc->SetPos(iWaveIndex * 8);
+         uint32_t tmp = 1;
+         _3crc->WriteUint32(&tmp); // unknown, always 1?
+         _3crc->WriteUint32(&crc);
+     }
      Group* File::GetFirstGroup() {
          if (!pGroups) LoadGroups();
          // there must always be at least one group
-Line 3169 
 namespace {
+Line 3732 
 namespace {
                  RIFF::Chunk* ck = lst3gnl->GetFirstSubChunk();
                  while (ck) {
                      if (ck->GetChunkID() == CHUNK_ID_3GNM) {
+                         if (pVersion && pVersion->major == 3 &&
+                             strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) break;
                          pGroups->push_back(new Group(this, ck));
                      }
                      ck = lst3gnl->GetNextSubChunk();
-Line 3194 
 namespace {
+Line 3760 
 namespace {
       * @throws Exception - on errors
       */
      void File::UpdateChunks() {
+         bool newFile = pRIFF->GetSubList(LIST_TYPE_INFO) == NULL;
+         b64BitWavePoolOffsets = pVersion && pVersion->major == 3;
          // first update base class's chunks
          DLS::File::UpdateChunks();
+         if (newFile) {
+             // INFO was added by Resource::UpdateChunks - make sure it
+             // is placed first in file
+             RIFF::Chunk* info = pRIFF->GetSubList(LIST_TYPE_INFO);
+             RIFF::Chunk* first = pRIFF->GetFirstSubChunk();
+             if (first != info) {
+                 pRIFF->MoveSubChunk(info, first);
+             }
+         }
          // update group's chunks
          if (pGroups) {
              std::list<Group*>::iterator iter = pGroups->begin();
-Line 3204 
 namespace {
+Line 3784 
 namespace {
              for (; iter != end; ++iter) {
                  (*iter)->UpdateChunks();
              }
-         }
+             // v3: make sure the file has 128 3gnm chunks
+             if (pVersion && pVersion->major == 3) {
+                 RIFF::List* _3gnl = pRIFF->GetSubList(LIST_TYPE_3GRI)->GetSubList(LIST_TYPE_3GNL);
+                 RIFF::Chunk* _3gnm = _3gnl->GetFirstSubChunk();
+                 for (int i = 0 ; i < 128 ; i++) {
+                     if (i >= pGroups->size()) ::SaveString(CHUNK_ID_3GNM, _3gnm, _3gnl, "", "", true, 64);
+                     if (_3gnm) _3gnm = _3gnl->GetNextSubChunk();
+                 }
+             }
+         }
+         // update einf chunk
+         // The einf chunk contains statistics about the gig file, such
+         // as the number of regions and samples used by each
+         // instrument. It is divided in equally sized parts, where the
+         // first part contains information about the whole gig file,
+         // and the rest of the parts map to each instrument in the
+         // file.
+         //
+         // At the end of each part there is a bit map of each sample
+         // in the file, where a set bit means that the sample is used
+         // by the file/instrument.
+         //
+         // Note that there are several fields with unknown use. These
+         // are set to zero.
+         int sublen = pSamples->size() / 8 + 49;
+         int einfSize = (Instruments + 1) * sublen;
+         RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);
+         if (einf) {
+             if (einf->GetSize() != einfSize) {
+                 einf->Resize(einfSize);
+                 memset(einf->LoadChunkData(), 0, einfSize);
+             }
+         } else if (newFile) {
+             einf = pRIFF->AddSubChunk(CHUNK_ID_EINF, einfSize);
+         }
+         if (einf) {
+             uint8_t* pData = (uint8_t*) einf->LoadChunkData();
+             std::map<gig::Sample*,int> sampleMap;
+             int sampleIdx = 0;
+             for (Sample* pSample = GetFirstSample(); pSample; pSample = GetNextSample()) {
+                 sampleMap[pSample] = sampleIdx++;
+             }
+             int totnbusedsamples = 0;
+             int totnbusedchannels = 0;
+             int totnbregions = 0;
+             int totnbdimregions = 0;
+             int totnbloops = 0;
+             int instrumentIdx = 0;
+             memset(&pData[48], 0, sublen - 48);
+             for (Instrument* instrument = GetFirstInstrument() ; instrument ;
+                  instrument = GetNextInstrument()) {
+                 int nbusedsamples = 0;
+                 int nbusedchannels = 0;
+                 int nbdimregions = 0;
+                 int nbloops = 0;
+                 memset(&pData[(instrumentIdx + 1) * sublen + 48], 0, sublen - 48);
+                 for (Region* region = instrument->GetFirstRegion() ; region ;
+                      region = instrument->GetNextRegion()) {
+                     for (int i = 0 ; i < region->DimensionRegions ; i++) {
+                         gig::DimensionRegion *d = region->pDimensionRegions[i];
+                         if (d->pSample) {
+                             int sampleIdx = sampleMap[d->pSample];
+                             int byte = 48 + sampleIdx / 8;
+                             int bit = 1 << (sampleIdx & 7);
+                             if ((pData[(instrumentIdx + 1) * sublen + byte] & bit) == 0) {
+                                 pData[(instrumentIdx + 1) * sublen + byte] |= bit;
+                                 nbusedsamples++;
+                                 nbusedchannels += d->pSample->Channels;
+                                 if ((pData[byte] & bit) == 0) {
+                                     pData[byte] |= bit;
+                                     totnbusedsamples++;
+                                     totnbusedchannels += d->pSample->Channels;
+                                 }
+                             }
+                         }
+                         if (d->SampleLoops) nbloops++;
+                     }
+                     nbdimregions += region->DimensionRegions;
+                 }
+                 // first 4 bytes unknown - sometimes 0, sometimes length of einf part
+                 // store32(&pData[(instrumentIdx + 1) * sublen], sublen);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 4], nbusedchannels);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 8], nbusedsamples);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 12], 1);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 16], instrument->Regions);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 20], nbdimregions);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 24], nbloops);
+                 // next 8 bytes unknown
+                 store32(&pData[(instrumentIdx + 1) * sublen + 36], instrumentIdx);
+                 store32(&pData[(instrumentIdx + 1) * sublen + 40], pSamples->size());
+                 // next 4 bytes unknown
+                 totnbregions += instrument->Regions;
+                 totnbdimregions += nbdimregions;
+                 totnbloops += nbloops;
+                 instrumentIdx++;
+             }
+             // first 4 bytes unknown - sometimes 0, sometimes length of einf part
+             // store32(&pData[0], sublen);
+             store32(&pData[4], totnbusedchannels);
+             store32(&pData[8], totnbusedsamples);
+             store32(&pData[12], Instruments);
+             store32(&pData[16], totnbregions);
+             store32(&pData[20], totnbdimregions);
+             store32(&pData[24], totnbloops);
+             // next 8 bytes unknown
+             // next 4 bytes unknown, not always 0
+             store32(&pData[40], pSamples->size());
+             // next 4 bytes unknown
+         }
+         // update 3crc chunk
+         // The 3crc chunk contains CRC-32 checksums for the
+         // samples. The actual checksum values will be filled in
+         // later, by Sample::Write.
+         RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
+         if (_3crc) {
+             _3crc->Resize(pSamples->size() * 8);
+         } else if (newFile) {
+             _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);
+             _3crc->LoadChunkData();
+             // the order of einf and 3crc is not the same in v2 and v3
+             if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);
+         }
+     }
+     /**
+      * Enable / disable automatic loading. By default this properyt is
+      * enabled and all informations are loaded automatically. However
+      * loading all Regions, DimensionRegions and especially samples might
+      * take a long time for large .gig files, and sometimes one might only
+      * be interested in retrieving very superficial informations like the
+      * amount of instruments and their names. In this case one might disable
+      * automatic loading to avoid very slow response times.
+      *
+      * @e CAUTION: by disabling this property many pointers (i.e. sample
+      * references) and informations will have invalid or even undefined
+      * data! This feature is currently only intended for retrieving very
+      * superficial informations in a very fast way. Don't use it to retrieve
+      * details like synthesis informations or even to modify .gig files!
+      */
+     void File::SetAutoLoad(bool b) {
+         bAutoLoad = b;
+     }
+     /**
+      * Returns whether automatic loading is enabled.
+      * @see SetAutoLoad()
+      */
+     bool File::GetAutoLoad() {
+         return bAutoLoad;
      }

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Added in v.1627
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Removed from v.1102
 


changed lines


 
Added in v.1627
-Removed from v.1102
+Added in v.1627

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