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

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revision 1180 by persson, Sat May 12 12:39:25 2007 UTC revision 1713 by persson, Thu Mar 6 20:42:22 2008 UTC
# Line 25  Line 25 
25    
26  #include "helper.h"  #include "helper.h"
27    
28    #include <algorithm>
29  #include <math.h>  #include <math.h>
30  #include <iostream>  #include <iostream>
31    
# Line 255  namespace { Line 256  namespace {
256    
257    
258    
259    // *************** Internal CRC-32 (Cyclic Redundancy Check) functions  ***************
260    // *
261    
262        static uint32_t* __initCRCTable() {
263            static uint32_t res[256];
264    
265            for (int i = 0 ; i < 256 ; i++) {
266                uint32_t c = i;
267                for (int j = 0 ; j < 8 ; j++) {
268                    c = (c & 1) ? 0xedb88320 ^ (c >> 1) : c >> 1;
269                }
270                res[i] = c;
271            }
272            return res;
273        }
274    
275        static const uint32_t* __CRCTable = __initCRCTable();
276    
277        /**
278         * Initialize a CRC variable.
279         *
280         * @param crc - variable to be initialized
281         */
282        inline static void __resetCRC(uint32_t& crc) {
283            crc = 0xffffffff;
284        }
285    
286        /**
287         * Used to calculate checksums of the sample data in a gig file. The
288         * checksums are stored in the 3crc chunk of the gig file and
289         * automatically updated when a sample is written with Sample::Write().
290         *
291         * One should call __resetCRC() to initialize the CRC variable to be
292         * used before calling this function the first time.
293         *
294         * After initializing the CRC variable one can call this function
295         * arbitrary times, i.e. to split the overall CRC calculation into
296         * steps.
297         *
298         * Once the whole data was processed by __calculateCRC(), one should
299         * call __encodeCRC() to get the final CRC result.
300         *
301         * @param buf     - pointer to data the CRC shall be calculated of
302         * @param bufSize - size of the data to be processed
303         * @param crc     - variable the CRC sum shall be stored to
304         */
305        static void __calculateCRC(unsigned char* buf, int bufSize, uint32_t& crc) {
306            for (int i = 0 ; i < bufSize ; i++) {
307                crc = __CRCTable[(crc ^ buf[i]) & 0xff] ^ (crc >> 8);
308            }
309        }
310    
311        /**
312         * Returns the final CRC result.
313         *
314         * @param crc - variable previously passed to __calculateCRC()
315         */
316        inline static uint32_t __encodeCRC(const uint32_t& crc) {
317            return crc ^ 0xffffffff;
318        }
319    
320    
321    
322  // *************** Other Internal functions  ***************  // *************** Other Internal functions  ***************
323  // *  // *
324    
# Line 303  namespace { Line 367  namespace {
367       *                         is located, 0 otherwise       *                         is located, 0 otherwise
368       */       */
369      Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) {      Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) {
370          static const DLS::Info::FixedStringLength fixedStringLengths[] = {          static const DLS::Info::string_length_t fixedStringLengths[] = {
371              { CHUNK_ID_INAM, 64 },              { CHUNK_ID_INAM, 64 },
372              { 0, 0 }              { 0, 0 }
373          };          };
374          pInfo->FixedStringLengths = fixedStringLengths;          pInfo->SetFixedStringLengths(fixedStringLengths);
375          Instances++;          Instances++;
376          FileNo = fileNo;          FileNo = fileNo;
377    
378            __resetCRC(crc);
379    
380          pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX);          pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX);
381          if (pCk3gix) {          if (pCk3gix) {
382              uint16_t iSampleGroup = pCk3gix->ReadInt16();              uint16_t iSampleGroup = pCk3gix->ReadInt16();
# Line 342  namespace { Line 408  namespace {
408              Manufacturer  = 0;              Manufacturer  = 0;
409              Product       = 0;              Product       = 0;
410              SamplePeriod  = uint32_t(1000000000.0 / SamplesPerSecond + 0.5);              SamplePeriod  = uint32_t(1000000000.0 / SamplesPerSecond + 0.5);
411              MIDIUnityNote = 64;              MIDIUnityNote = 60;
412              FineTune      = 0;              FineTune      = 0;
413                SMPTEFormat   = smpte_format_no_offset;
414              SMPTEOffset   = 0;              SMPTEOffset   = 0;
415              Loops         = 0;              Loops         = 0;
416              LoopID        = 0;              LoopID        = 0;
417                LoopType      = loop_type_normal;
418              LoopStart     = 0;              LoopStart     = 0;
419              LoopEnd       = 0;              LoopEnd       = 0;
420              LoopFraction  = 0;              LoopFraction  = 0;
# Line 402  namespace { Line 470  namespace {
470    
471          // make sure 'smpl' chunk exists          // make sure 'smpl' chunk exists
472          pCkSmpl = pWaveList->GetSubChunk(CHUNK_ID_SMPL);          pCkSmpl = pWaveList->GetSubChunk(CHUNK_ID_SMPL);
473          if (!pCkSmpl) pCkSmpl = pWaveList->AddSubChunk(CHUNK_ID_SMPL, 60);          if (!pCkSmpl) {
474                pCkSmpl = pWaveList->AddSubChunk(CHUNK_ID_SMPL, 60);
475                memset(pCkSmpl->LoadChunkData(), 0, 60);
476            }
477          // update 'smpl' chunk          // update 'smpl' chunk
478          uint8_t* pData = (uint8_t*) pCkSmpl->LoadChunkData();          uint8_t* pData = (uint8_t*) pCkSmpl->LoadChunkData();
479          SamplePeriod = uint32_t(1000000000.0 / SamplesPerSecond + 0.5);          SamplePeriod = uint32_t(1000000000.0 / SamplesPerSecond + 0.5);
# Line 1127  namespace { Line 1198  namespace {
1198       *       *
1199       * Note: there is currently no support for writing compressed samples.       * Note: there is currently no support for writing compressed samples.
1200       *       *
1201         * For 16 bit samples, the data in the source buffer should be
1202         * int16_t (using native endianness). For 24 bit, the buffer
1203         * should contain three bytes per sample, little-endian.
1204         *
1205       * @param pBuffer     - source buffer       * @param pBuffer     - source buffer
1206       * @param SampleCount - number of sample points to write       * @param SampleCount - number of sample points to write
1207       * @throws DLS::Exception if current sample size is too small       * @throws DLS::Exception if current sample size is too small
# Line 1135  namespace { Line 1210  namespace {
1210       */       */
1211      unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) {      unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) {
1212          if (Compressed) throw gig::Exception("There is no support for writing compressed gig samples (yet)");          if (Compressed) throw gig::Exception("There is no support for writing compressed gig samples (yet)");
1213          return DLS::Sample::Write(pBuffer, SampleCount);  
1214            // if this is the first write in this sample, reset the
1215            // checksum calculator
1216            if (pCkData->GetPos() == 0) {
1217                __resetCRC(crc);
1218            }
1219            if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");
1220            unsigned long res;
1221            if (BitDepth == 24) {
1222                res = pCkData->Write(pBuffer, SampleCount * FrameSize, 1) / FrameSize;
1223            } else { // 16 bit
1224                res = Channels == 2 ? pCkData->Write(pBuffer, SampleCount << 1, 2) >> 1
1225                                    : pCkData->Write(pBuffer, SampleCount, 2);
1226            }
1227            __calculateCRC((unsigned char *)pBuffer, SampleCount * FrameSize, crc);
1228    
1229            // if this is the last write, update the checksum chunk in the
1230            // file
1231            if (pCkData->GetPos() == pCkData->GetSize()) {
1232                File* pFile = static_cast<File*>(GetParent());
1233                pFile->SetSampleChecksum(this, __encodeCRC(crc));
1234            }
1235            return res;
1236      }      }
1237    
1238      /**      /**
# Line 1211  namespace { Line 1308  namespace {
1308      uint                               DimensionRegion::Instances       = 0;      uint                               DimensionRegion::Instances       = 0;
1309      DimensionRegion::VelocityTableMap* DimensionRegion::pVelocityTables = NULL;      DimensionRegion::VelocityTableMap* DimensionRegion::pVelocityTables = NULL;
1310    
1311      DimensionRegion::DimensionRegion(RIFF::List* _3ewl) : DLS::Sampler(_3ewl) {      DimensionRegion::DimensionRegion(Region* pParent, RIFF::List* _3ewl) : DLS::Sampler(_3ewl) {
1312          Instances++;          Instances++;
1313    
1314          pSample = NULL;          pSample = NULL;
1315            pRegion = pParent;
1316    
1317            if (_3ewl->GetSubChunk(CHUNK_ID_WSMP)) memcpy(&Crossfade, &SamplerOptions, 4);
1318            else memset(&Crossfade, 0, 4);
1319    
         memcpy(&Crossfade, &SamplerOptions, 4);  
1320          if (!pVelocityTables) pVelocityTables = new VelocityTableMap;          if (!pVelocityTables) pVelocityTables = new VelocityTableMap;
1321    
1322          RIFF::Chunk* _3ewa = _3ewl->GetSubChunk(CHUNK_ID_3EWA);          RIFF::Chunk* _3ewa = _3ewl->GetSubChunk(CHUNK_ID_3EWA);
# Line 1380  namespace { Line 1480  namespace {
1480              LFO1ControlDepth                = 0;              LFO1ControlDepth                = 0;
1481              LFO3ControlDepth                = 0;              LFO3ControlDepth                = 0;
1482              EG1Attack                       = 0.0;              EG1Attack                       = 0.0;
1483              EG1Decay1                       = 0.0;              EG1Decay1                       = 0.005;
1484              EG1Sustain                      = 0;              EG1Sustain                      = 1000;
1485              EG1Release                      = 0.0;              EG1Release                      = 0.3;
1486              EG1Controller.type              = eg1_ctrl_t::type_none;              EG1Controller.type              = eg1_ctrl_t::type_none;
1487              EG1Controller.controller_number = 0;              EG1Controller.controller_number = 0;
1488              EG1ControllerInvert             = false;              EG1ControllerInvert             = false;
# Line 1397  namespace { Line 1497  namespace {
1497              EG2ControllerReleaseInfluence   = 0;              EG2ControllerReleaseInfluence   = 0;
1498              LFO1Frequency                   = 1.0;              LFO1Frequency                   = 1.0;
1499              EG2Attack                       = 0.0;              EG2Attack                       = 0.0;
1500              EG2Decay1                       = 0.0;              EG2Decay1                       = 0.005;
1501              EG2Sustain                      = 0;              EG2Sustain                      = 1000;
1502              EG2Release                      = 0.0;              EG2Release                      = 0.3;
1503              LFO2ControlDepth                = 0;              LFO2ControlDepth                = 0;
1504              LFO2Frequency                   = 1.0;              LFO2Frequency                   = 1.0;
1505              LFO2InternalDepth               = 0;              LFO2InternalDepth               = 0;
1506              EG1Decay2                       = 0.0;              EG1Decay2                       = 0.0;
1507              EG1InfiniteSustain              = false;              EG1InfiniteSustain              = true;
1508              EG1PreAttack                    = 1000;              EG1PreAttack                    = 0;
1509              EG2Decay2                       = 0.0;              EG2Decay2                       = 0.0;
1510              EG2InfiniteSustain              = false;              EG2InfiniteSustain              = true;
1511              EG2PreAttack                    = 1000;              EG2PreAttack                    = 0;
1512              VelocityResponseCurve           = curve_type_nonlinear;              VelocityResponseCurve           = curve_type_nonlinear;
1513              VelocityResponseDepth           = 3;              VelocityResponseDepth           = 3;
1514              ReleaseVelocityResponseCurve    = curve_type_nonlinear;              ReleaseVelocityResponseCurve    = curve_type_nonlinear;
# Line 1451  namespace { Line 1551  namespace {
1551              VCFVelocityDynamicRange         = 0x04;              VCFVelocityDynamicRange         = 0x04;
1552              VCFVelocityCurve                = curve_type_linear;              VCFVelocityCurve                = curve_type_linear;
1553              VCFType                         = vcf_type_lowpass;              VCFType                         = vcf_type_lowpass;
1554              memset(DimensionUpperLimits, 0, 8);              memset(DimensionUpperLimits, 127, 8);
1555          }          }
1556    
1557          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,          pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve,
1558                                                       VelocityResponseDepth,                                                       VelocityResponseDepth,
1559                                                       VelocityResponseCurveScaling);                                                       VelocityResponseCurveScaling);
1560    
1561          curve_type_t curveType = ReleaseVelocityResponseCurve;          pVelocityReleaseTable = GetReleaseVelocityTable(
1562          uint8_t depth = ReleaseVelocityResponseDepth;                                      ReleaseVelocityResponseCurve,
1563                                        ReleaseVelocityResponseDepth
1564                                    );
1565    
1566            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve,
1567                                                          VCFVelocityDynamicRange,
1568                                                          VCFVelocityScale,
1569                                                          VCFCutoffController);
1570    
1571          // this models a strange behaviour or bug in GSt: two of the          SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));
1572          // velocity response curves for release time are not used even          VelocityTable = 0;
1573          // 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);  
1574    
1575          curveType = VCFVelocityCurve;      /*
1576          depth = VCFVelocityDynamicRange;       * Constructs a DimensionRegion by copying all parameters from
1577         * another DimensionRegion
1578         */
1579        DimensionRegion::DimensionRegion(RIFF::List* _3ewl, const DimensionRegion& src) : DLS::Sampler(_3ewl) {
1580            Instances++;
1581            *this = src; // default memberwise shallow copy of all parameters
1582            pParentList = _3ewl; // restore the chunk pointer
1583    
1584          // even stranger GSt: two of the velocity response curves for          // deep copy of owned structures
1585          // filter cutoff are not used, instead another special curve          if (src.VelocityTable) {
1586          // is chosen. This curve is not used anywhere else.              VelocityTable = new uint8_t[128];
1587          if ((curveType == curve_type_nonlinear && depth == 0) ||              for (int k = 0 ; k < 128 ; k++)
1588              (curveType == curve_type_special   && depth == 4)) {                  VelocityTable[k] = src.VelocityTable[k];
             curveType = curve_type_special;  
             depth = 5;  
1589          }          }
1590          pVelocityCutoffTable = GetVelocityTable(curveType, depth,          if (src.pSampleLoops) {
1591                                                  VCFCutoffController <= vcf_cutoff_ctrl_none2 ? VCFVelocityScale : 0);              pSampleLoops = new DLS::sample_loop_t[src.SampleLoops];
1592                for (int k = 0 ; k < src.SampleLoops ; k++)
1593                    pSampleLoops[k] = src.pSampleLoops[k];
1594            }
1595        }
1596    
1597        /**
1598         * Updates the respective member variable and updates @c SampleAttenuation
1599         * which depends on this value.
1600         */
1601        void DimensionRegion::SetGain(int32_t gain) {
1602            DLS::Sampler::SetGain(gain);
1603          SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));          SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));
         VelocityTable = 0;  
1604      }      }
1605    
1606      /**      /**
# Line 1500  namespace { Line 1614  namespace {
1614          // first update base class's chunk          // first update base class's chunk
1615          DLS::Sampler::UpdateChunks();          DLS::Sampler::UpdateChunks();
1616    
1617            RIFF::Chunk* wsmp = pParentList->GetSubChunk(CHUNK_ID_WSMP);
1618            uint8_t* pData = (uint8_t*) wsmp->LoadChunkData();
1619            pData[12] = Crossfade.in_start;
1620            pData[13] = Crossfade.in_end;
1621            pData[14] = Crossfade.out_start;
1622            pData[15] = Crossfade.out_end;
1623    
1624          // make sure '3ewa' chunk exists          // make sure '3ewa' chunk exists
1625          RIFF::Chunk* _3ewa = pParentList->GetSubChunk(CHUNK_ID_3EWA);          RIFF::Chunk* _3ewa = pParentList->GetSubChunk(CHUNK_ID_3EWA);
1626          if (!_3ewa)  _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, 140);          if (!_3ewa) {
1627          uint8_t* pData = (uint8_t*) _3ewa->LoadChunkData();              File* pFile = (File*) GetParent()->GetParent()->GetParent();
1628                bool version3 = pFile->pVersion && pFile->pVersion->major == 3;
1629                _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, version3 ? 148 : 140);
1630            }
1631            pData = (uint8_t*) _3ewa->LoadChunkData();
1632    
1633          // update '3ewa' chunk with DimensionRegion's current settings          // update '3ewa' chunk with DimensionRegion's current settings
1634    
1635          const uint32_t chunksize = _3ewa->GetSize();          const uint32_t chunksize = _3ewa->GetNewSize();
1636          store32(&pData[0], chunksize); // unknown, always chunk size?          store32(&pData[0], chunksize); // unknown, always chunk size?
1637    
1638          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);          const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency);
# Line 1549  namespace { Line 1674  namespace {
1674          pData[44] = eg1ctl;          pData[44] = eg1ctl;
1675    
1676          const uint8_t eg1ctrloptions =          const uint8_t eg1ctrloptions =
1677              (EG1ControllerInvert) ? 0x01 : 0x00 |              (EG1ControllerInvert ? 0x01 : 0x00) |
1678              GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG1ControllerAttackInfluence) |              GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG1ControllerAttackInfluence) |
1679              GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG1ControllerDecayInfluence) |              GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG1ControllerDecayInfluence) |
1680              GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG1ControllerReleaseInfluence);              GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG1ControllerReleaseInfluence);
# Line 1559  namespace { Line 1684  namespace {
1684          pData[46] = eg2ctl;          pData[46] = eg2ctl;
1685    
1686          const uint8_t eg2ctrloptions =          const uint8_t eg2ctrloptions =
1687              (EG2ControllerInvert) ? 0x01 : 0x00 |              (EG2ControllerInvert ? 0x01 : 0x00) |
1688              GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG2ControllerAttackInfluence) |              GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG2ControllerAttackInfluence) |
1689              GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG2ControllerDecayInfluence) |              GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG2ControllerDecayInfluence) |
1690              GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG2ControllerReleaseInfluence);              GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG2ControllerReleaseInfluence);
# Line 1737  namespace { Line 1862  namespace {
1862          const uint8_t eg1hold = (EG1Hold) ? 0x80 : 0x00; // bit 7          const uint8_t eg1hold = (EG1Hold) ? 0x80 : 0x00; // bit 7
1863          pData[131] = eg1hold;          pData[131] = eg1hold;
1864    
1865          const uint8_t vcfcutoff = (VCFEnabled) ? 0x80 : 0x00 |  /* bit 7 */          const uint8_t vcfcutoff = (VCFEnabled ? 0x80 : 0x00) |  /* bit 7 */
1866                                    (VCFCutoff & 0x7f);   /* lower 7 bits */                                    (VCFCutoff & 0x7f);   /* lower 7 bits */
1867          pData[132] = vcfcutoff;          pData[132] = vcfcutoff;
1868    
1869          pData[133] = VCFCutoffController;          pData[133] = VCFCutoffController;
1870    
1871          const uint8_t vcfvelscale = (VCFCutoffControllerInvert) ? 0x80 : 0x00 | /* bit 7 */          const uint8_t vcfvelscale = (VCFCutoffControllerInvert ? 0x80 : 0x00) | /* bit 7 */
1872                                      (VCFVelocityScale & 0x7f); /* lower 7 bits */                                      (VCFVelocityScale & 0x7f); /* lower 7 bits */
1873          pData[134] = vcfvelscale;          pData[134] = vcfvelscale;
1874    
1875          // next byte unknown          // next byte unknown
1876    
1877          const uint8_t vcfresonance = (VCFResonanceDynamic) ? 0x00 : 0x80 | /* bit 7 */          const uint8_t vcfresonance = (VCFResonanceDynamic ? 0x00 : 0x80) | /* bit 7 */
1878                                       (VCFResonance & 0x7f); /* lower 7 bits */                                       (VCFResonance & 0x7f); /* lower 7 bits */
1879          pData[136] = vcfresonance;          pData[136] = vcfresonance;
1880    
1881          const uint8_t vcfbreakpoint = (VCFKeyboardTracking) ? 0x80 : 0x00 | /* bit 7 */          const uint8_t vcfbreakpoint = (VCFKeyboardTracking ? 0x80 : 0x00) | /* bit 7 */
1882                                        (VCFKeyboardTrackingBreakpoint & 0x7f); /* lower 7 bits */                                        (VCFKeyboardTrackingBreakpoint & 0x7f); /* lower 7 bits */
1883          pData[137] = vcfbreakpoint;          pData[137] = vcfbreakpoint;
1884    
# Line 1769  namespace { Line 1894  namespace {
1894          }          }
1895      }      }
1896    
1897        double* DimensionRegion::GetReleaseVelocityTable(curve_type_t releaseVelocityResponseCurve, uint8_t releaseVelocityResponseDepth) {
1898            curve_type_t curveType = releaseVelocityResponseCurve;
1899            uint8_t depth = releaseVelocityResponseDepth;
1900            // this models a strange behaviour or bug in GSt: two of the
1901            // velocity response curves for release time are not used even
1902            // if specified, instead another curve is chosen.
1903            if ((curveType == curve_type_nonlinear && depth == 0) ||
1904                (curveType == curve_type_special   && depth == 4)) {
1905                curveType = curve_type_nonlinear;
1906                depth = 3;
1907            }
1908            return GetVelocityTable(curveType, depth, 0);
1909        }
1910    
1911        double* DimensionRegion::GetCutoffVelocityTable(curve_type_t vcfVelocityCurve,
1912                                                        uint8_t vcfVelocityDynamicRange,
1913                                                        uint8_t vcfVelocityScale,
1914                                                        vcf_cutoff_ctrl_t vcfCutoffController)
1915        {
1916            curve_type_t curveType = vcfVelocityCurve;
1917            uint8_t depth = vcfVelocityDynamicRange;
1918            // even stranger GSt: two of the velocity response curves for
1919            // filter cutoff are not used, instead another special curve
1920            // is chosen. This curve is not used anywhere else.
1921            if ((curveType == curve_type_nonlinear && depth == 0) ||
1922                (curveType == curve_type_special   && depth == 4)) {
1923                curveType = curve_type_special;
1924                depth = 5;
1925            }
1926            return GetVelocityTable(curveType, depth,
1927                                    (vcfCutoffController <= vcf_cutoff_ctrl_none2)
1928                                        ? vcfVelocityScale : 0);
1929        }
1930    
1931      // 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
1932      double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling)      double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling)
1933      {      {
# Line 1784  namespace { Line 1943  namespace {
1943          return table;          return table;
1944      }      }
1945    
1946        Region* DimensionRegion::GetParent() const {
1947            return pRegion;
1948        }
1949    
1950      leverage_ctrl_t DimensionRegion::DecodeLeverageController(_lev_ctrl_t EncodedController) {      leverage_ctrl_t DimensionRegion::DecodeLeverageController(_lev_ctrl_t EncodedController) {
1951          leverage_ctrl_t decodedcontroller;          leverage_ctrl_t decodedcontroller;
1952          switch (EncodedController) {          switch (EncodedController) {
# Line 1991  namespace { Line 2154  namespace {
2154                      default:                      default:
2155                          throw gig::Exception("leverage controller number is not supported by the gig format");                          throw gig::Exception("leverage controller number is not supported by the gig format");
2156                  }                  }
2157                    break;
2158              default:              default:
2159                  throw gig::Exception("Unknown leverage controller type.");                  throw gig::Exception("Unknown leverage controller type.");
2160          }          }
# Line 2036  namespace { Line 2200  namespace {
2200          return pVelocityCutoffTable[MIDIKeyVelocity];          return pVelocityCutoffTable[MIDIKeyVelocity];
2201      }      }
2202    
2203        /**
2204         * Updates the respective member variable and the lookup table / cache
2205         * that depends on this value.
2206         */
2207        void DimensionRegion::SetVelocityResponseCurve(curve_type_t curve) {
2208            pVelocityAttenuationTable =
2209                GetVelocityTable(
2210                    curve, VelocityResponseDepth, VelocityResponseCurveScaling
2211                );
2212            VelocityResponseCurve = curve;
2213        }
2214    
2215        /**
2216         * Updates the respective member variable and the lookup table / cache
2217         * that depends on this value.
2218         */
2219        void DimensionRegion::SetVelocityResponseDepth(uint8_t depth) {
2220            pVelocityAttenuationTable =
2221                GetVelocityTable(
2222                    VelocityResponseCurve, depth, VelocityResponseCurveScaling
2223                );
2224            VelocityResponseDepth = depth;
2225        }
2226    
2227        /**
2228         * Updates the respective member variable and the lookup table / cache
2229         * that depends on this value.
2230         */
2231        void DimensionRegion::SetVelocityResponseCurveScaling(uint8_t scaling) {
2232            pVelocityAttenuationTable =
2233                GetVelocityTable(
2234                    VelocityResponseCurve, VelocityResponseDepth, scaling
2235                );
2236            VelocityResponseCurveScaling = scaling;
2237        }
2238    
2239        /**
2240         * Updates the respective member variable and the lookup table / cache
2241         * that depends on this value.
2242         */
2243        void DimensionRegion::SetReleaseVelocityResponseCurve(curve_type_t curve) {
2244            pVelocityReleaseTable = GetReleaseVelocityTable(curve, ReleaseVelocityResponseDepth);
2245            ReleaseVelocityResponseCurve = curve;
2246        }
2247    
2248        /**
2249         * Updates the respective member variable and the lookup table / cache
2250         * that depends on this value.
2251         */
2252        void DimensionRegion::SetReleaseVelocityResponseDepth(uint8_t depth) {
2253            pVelocityReleaseTable = GetReleaseVelocityTable(ReleaseVelocityResponseCurve, depth);
2254            ReleaseVelocityResponseDepth = depth;
2255        }
2256    
2257        /**
2258         * Updates the respective member variable and the lookup table / cache
2259         * that depends on this value.
2260         */
2261        void DimensionRegion::SetVCFCutoffController(vcf_cutoff_ctrl_t controller) {
2262            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, VCFVelocityDynamicRange, VCFVelocityScale, controller);
2263            VCFCutoffController = controller;
2264        }
2265    
2266        /**
2267         * Updates the respective member variable and the lookup table / cache
2268         * that depends on this value.
2269         */
2270        void DimensionRegion::SetVCFVelocityCurve(curve_type_t curve) {
2271            pVelocityCutoffTable = GetCutoffVelocityTable(curve, VCFVelocityDynamicRange, VCFVelocityScale, VCFCutoffController);
2272            VCFVelocityCurve = curve;
2273        }
2274    
2275        /**
2276         * Updates the respective member variable and the lookup table / cache
2277         * that depends on this value.
2278         */
2279        void DimensionRegion::SetVCFVelocityDynamicRange(uint8_t range) {
2280            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, range, VCFVelocityScale, VCFCutoffController);
2281            VCFVelocityDynamicRange = range;
2282        }
2283    
2284        /**
2285         * Updates the respective member variable and the lookup table / cache
2286         * that depends on this value.
2287         */
2288        void DimensionRegion::SetVCFVelocityScale(uint8_t scaling) {
2289            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, VCFVelocityDynamicRange, scaling, VCFCutoffController);
2290            VCFVelocityScale = scaling;
2291        }
2292    
2293      double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) {      double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) {
2294    
2295          // line-segment approximations of the 15 velocity curves          // line-segment approximations of the 15 velocity curves
# Line 2119  namespace { Line 2373  namespace {
2373    
2374          // Actual Loading          // Actual Loading
2375    
2376            if (!file->GetAutoLoad()) return;
2377    
2378          LoadDimensionRegions(rgnList);          LoadDimensionRegions(rgnList);
2379    
2380          RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK);          RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK);
# Line 2127  namespace { Line 2383  namespace {
2383              for (int i = 0; i < dimensionBits; i++) {              for (int i = 0; i < dimensionBits; i++) {
2384                  dimension_t dimension = static_cast<dimension_t>(_3lnk->ReadUint8());                  dimension_t dimension = static_cast<dimension_t>(_3lnk->ReadUint8());
2385                  uint8_t     bits      = _3lnk->ReadUint8();                  uint8_t     bits      = _3lnk->ReadUint8();
2386                  _3lnk->ReadUint8(); // probably the position of the dimension                  _3lnk->ReadUint8(); // bit position of the dimension (bits[0] + bits[1] + ... + bits[i-1])
2387                  _3lnk->ReadUint8(); // unknown                  _3lnk->ReadUint8(); // (1 << bit position of next dimension) - (1 << bit position of this dimension)
2388                  uint8_t     zones     = _3lnk->ReadUint8(); // new for v3: number of zones doesn't have to be == pow(2,bits)                  uint8_t     zones     = _3lnk->ReadUint8(); // new for v3: number of zones doesn't have to be == pow(2,bits)
2389                  if (dimension == dimension_none) { // inactive dimension                  if (dimension == dimension_none) { // inactive dimension
2390                      pDimensionDefinitions[i].dimension  = dimension_none;                      pDimensionDefinitions[i].dimension  = dimension_none;
# Line 2162  namespace { Line 2418  namespace {
2418              else              else
2419                  _3lnk->SetPos(44);                  _3lnk->SetPos(44);
2420    
2421              // load sample references              // load sample references (if auto loading is enabled)
2422              for (uint i = 0; i < DimensionRegions; i++) {              if (file->GetAutoLoad()) {
2423                  uint32_t wavepoolindex = _3lnk->ReadUint32();                  for (uint i = 0; i < DimensionRegions; i++) {
2424                  if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);                      uint32_t wavepoolindex = _3lnk->ReadUint32();
2425                        if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);
2426                    }
2427                    GetSample(); // load global region sample reference
2428              }              }
             GetSample(); // load global region sample reference  
2429          } else {          } else {
2430              DimensionRegions = 0;              DimensionRegions = 0;
2431                for (int i = 0 ; i < 8 ; i++) {
2432                    pDimensionDefinitions[i].dimension  = dimension_none;
2433                    pDimensionDefinitions[i].bits       = 0;
2434                    pDimensionDefinitions[i].zones      = 0;
2435                }
2436          }          }
2437    
2438          // make sure there is at least one dimension region          // make sure there is at least one dimension region
# Line 2177  namespace { Line 2440  namespace {
2440              RIFF::List* _3prg = rgnList->GetSubList(LIST_TYPE_3PRG);              RIFF::List* _3prg = rgnList->GetSubList(LIST_TYPE_3PRG);
2441              if (!_3prg) _3prg = rgnList->AddSubList(LIST_TYPE_3PRG);              if (!_3prg) _3prg = rgnList->AddSubList(LIST_TYPE_3PRG);
2442              RIFF::List* _3ewl = _3prg->AddSubList(LIST_TYPE_3EWL);              RIFF::List* _3ewl = _3prg->AddSubList(LIST_TYPE_3EWL);
2443              pDimensionRegions[0] = new DimensionRegion(_3ewl);              pDimensionRegions[0] = new DimensionRegion(this, _3ewl);
2444              DimensionRegions = 1;              DimensionRegions = 1;
2445          }          }
2446      }      }
# Line 2207  namespace { Line 2470  namespace {
2470          }          }
2471    
2472          File* pFile = (File*) GetParent()->GetParent();          File* pFile = (File*) GetParent()->GetParent();
2473          const int iMaxDimensions = (pFile->pVersion && pFile->pVersion->major == 3) ? 8 : 5;          bool version3 = pFile->pVersion && pFile->pVersion->major == 3;
2474          const int iMaxDimensionRegions = (pFile->pVersion && pFile->pVersion->major == 3) ? 256 : 32;          const int iMaxDimensions =  version3 ? 8 : 5;
2475            const int iMaxDimensionRegions = version3 ? 256 : 32;
2476    
2477          // make sure '3lnk' chunk exists          // make sure '3lnk' chunk exists
2478          RIFF::Chunk* _3lnk = pCkRegion->GetSubChunk(CHUNK_ID_3LNK);          RIFF::Chunk* _3lnk = pCkRegion->GetSubChunk(CHUNK_ID_3LNK);
2479          if (!_3lnk) {          if (!_3lnk) {
2480              const int _3lnkChunkSize = (pFile->pVersion && pFile->pVersion->major == 3) ? 1092 : 172;              const int _3lnkChunkSize = version3 ? 1092 : 172;
2481              _3lnk = pCkRegion->AddSubChunk(CHUNK_ID_3LNK, _3lnkChunkSize);              _3lnk = pCkRegion->AddSubChunk(CHUNK_ID_3LNK, _3lnkChunkSize);
2482                memset(_3lnk->LoadChunkData(), 0, _3lnkChunkSize);
2483    
2484                // move 3prg to last position
2485                pCkRegion->MoveSubChunk(pCkRegion->GetSubList(LIST_TYPE_3PRG), 0);
2486          }          }
2487    
2488          // update dimension definitions in '3lnk' chunk          // update dimension definitions in '3lnk' chunk
2489          uint8_t* pData = (uint8_t*) _3lnk->LoadChunkData();          uint8_t* pData = (uint8_t*) _3lnk->LoadChunkData();
2490          store32(&pData[0], DimensionRegions);          store32(&pData[0], DimensionRegions);
2491            int shift = 0;
2492          for (int i = 0; i < iMaxDimensions; i++) {          for (int i = 0; i < iMaxDimensions; i++) {
2493              pData[4 + i * 8] = (uint8_t) pDimensionDefinitions[i].dimension;              pData[4 + i * 8] = (uint8_t) pDimensionDefinitions[i].dimension;
2494              pData[5 + i * 8] = pDimensionDefinitions[i].bits;              pData[5 + i * 8] = pDimensionDefinitions[i].bits;
2495              // next 2 bytes unknown              pData[6 + i * 8] = pDimensionDefinitions[i].dimension == dimension_none ? 0 : shift;
2496                pData[7 + i * 8] = (1 << (shift + pDimensionDefinitions[i].bits)) - (1 << shift);
2497              pData[8 + i * 8] = pDimensionDefinitions[i].zones;              pData[8 + i * 8] = pDimensionDefinitions[i].zones;
2498              // next 3 bytes unknown              // next 3 bytes unknown, always zero?
2499    
2500                shift += pDimensionDefinitions[i].bits;
2501          }          }
2502    
2503          // update wave pool table in '3lnk' chunk          // update wave pool table in '3lnk' chunk
2504          const int iWavePoolOffset = (pFile->pVersion && pFile->pVersion->major == 3) ? 68 : 44;          const int iWavePoolOffset = version3 ? 68 : 44;
2505          for (uint i = 0; i < iMaxDimensionRegions; i++) {          for (uint i = 0; i < iMaxDimensionRegions; i++) {
2506              int iWaveIndex = -1;              int iWaveIndex = -1;
2507              if (i < DimensionRegions) {              if (i < DimensionRegions) {
# Line 2242  namespace { Line 2514  namespace {
2514                          break;                          break;
2515                      }                      }
2516                  }                  }
                 if (iWaveIndex < 0) throw gig::Exception("Could not update gig::Region, could not find DimensionRegion's sample");  
2517              }              }
2518              store32(&pData[iWavePoolOffset + i * 4], iWaveIndex);              store32(&pData[iWavePoolOffset + i * 4], iWaveIndex);
2519          }          }
# Line 2255  namespace { Line 2526  namespace {
2526              RIFF::List* _3ewl = _3prg->GetFirstSubList();              RIFF::List* _3ewl = _3prg->GetFirstSubList();
2527              while (_3ewl) {              while (_3ewl) {
2528                  if (_3ewl->GetListType() == LIST_TYPE_3EWL) {                  if (_3ewl->GetListType() == LIST_TYPE_3EWL) {
2529                      pDimensionRegions[dimensionRegionNr] = new DimensionRegion(_3ewl);                      pDimensionRegions[dimensionRegionNr] = new DimensionRegion(this, _3ewl);
2530                      dimensionRegionNr++;                      dimensionRegionNr++;
2531                  }                  }
2532                  _3ewl = _3prg->GetNextSubList();                  _3ewl = _3prg->GetNextSubList();
# Line 2264  namespace { Line 2535  namespace {
2535          }          }
2536      }      }
2537    
2538        void Region::SetKeyRange(uint16_t Low, uint16_t High) {
2539            // update KeyRange struct and make sure regions are in correct order
2540            DLS::Region::SetKeyRange(Low, High);
2541            // update Region key table for fast lookup
2542            ((gig::Instrument*)GetParent())->UpdateRegionKeyTable();
2543        }
2544    
2545      void Region::UpdateVelocityTable() {      void Region::UpdateVelocityTable() {
2546          // get velocity dimension's index          // get velocity dimension's index
2547          int veldim = -1;          int veldim = -1;
# Line 2369  namespace { Line 2647  namespace {
2647              if (pDimensionDefinitions[i].dimension == pDimDef->dimension)              if (pDimensionDefinitions[i].dimension == pDimDef->dimension)
2648                  throw gig::Exception("Could not add new dimension, there is already a dimension of the same type");                  throw gig::Exception("Could not add new dimension, there is already a dimension of the same type");
2649    
2650            // pos is where the new dimension should be placed, normally
2651            // last in list, except for the samplechannel dimension which
2652            // has to be first in list
2653            int pos = pDimDef->dimension == dimension_samplechannel ? 0 : Dimensions;
2654            int bitpos = 0;
2655            for (int i = 0 ; i < pos ; i++)
2656                bitpos += pDimensionDefinitions[i].bits;
2657    
2658            // make room for the new dimension
2659            for (int i = Dimensions ; i > pos ; i--) pDimensionDefinitions[i] = pDimensionDefinitions[i - 1];
2660            for (int i = 0 ; i < (1 << iCurrentBits) ; i++) {
2661                for (int j = Dimensions ; j > pos ; j--) {
2662                    pDimensionRegions[i]->DimensionUpperLimits[j] =
2663                        pDimensionRegions[i]->DimensionUpperLimits[j - 1];
2664                }
2665            }
2666    
2667          // assign definition of new dimension          // assign definition of new dimension
2668          pDimensionDefinitions[Dimensions] = *pDimDef;          pDimensionDefinitions[pos] = *pDimDef;
2669    
2670          // auto correct certain dimension definition fields (where possible)          // auto correct certain dimension definition fields (where possible)
2671          pDimensionDefinitions[Dimensions].split_type  =          pDimensionDefinitions[pos].split_type  =
2672              __resolveSplitType(pDimensionDefinitions[Dimensions].dimension);              __resolveSplitType(pDimensionDefinitions[pos].dimension);
2673          pDimensionDefinitions[Dimensions].zone_size =          pDimensionDefinitions[pos].zone_size =
2674              __resolveZoneSize(pDimensionDefinitions[Dimensions]);              __resolveZoneSize(pDimensionDefinitions[pos]);
2675    
2676          // create new dimension region(s) for this new dimension          // create new dimension region(s) for this new dimension, and make
2677          for (int i = 1 << iCurrentBits; i < 1 << iNewBits; i++) {          // sure that the dimension regions are placed correctly in both the
2678              //TODO: maybe we should copy existing dimension regions if possible instead of simply creating new ones with default values          // RIFF list and the pDimensionRegions array
2679              RIFF::List* pNewDimRgnListChunk = pCkRegion->AddSubList(LIST_TYPE_3EWL);          RIFF::Chunk* moveTo = NULL;
2680              pDimensionRegions[i] = new DimensionRegion(pNewDimRgnListChunk);          RIFF::List* _3prg = pCkRegion->GetSubList(LIST_TYPE_3PRG);
2681              DimensionRegions++;          for (int i = (1 << iCurrentBits) - (1 << bitpos) ; i >= 0 ; i -= (1 << bitpos)) {
2682                for (int k = 0 ; k < (1 << bitpos) ; k++) {
2683                    pDimensionRegions[(i << pDimDef->bits) + k] = pDimensionRegions[i + k];
2684                }
2685                for (int j = 1 ; j < (1 << pDimDef->bits) ; j++) {
2686                    for (int k = 0 ; k < (1 << bitpos) ; k++) {
2687                        RIFF::List* pNewDimRgnListChunk = _3prg->AddSubList(LIST_TYPE_3EWL);
2688                        if (moveTo) _3prg->MoveSubChunk(pNewDimRgnListChunk, moveTo);
2689                        // create a new dimension region and copy all parameter values from
2690                        // an existing dimension region
2691                        pDimensionRegions[(i << pDimDef->bits) + (j << bitpos) + k] =
2692                            new DimensionRegion(pNewDimRgnListChunk, *pDimensionRegions[i + k]);
2693    
2694                        DimensionRegions++;
2695                    }
2696                }
2697                moveTo = pDimensionRegions[i]->pParentList;
2698            }
2699    
2700            // initialize the upper limits for this dimension
2701            int mask = (1 << bitpos) - 1;
2702            for (int z = 0 ; z < pDimDef->zones ; z++) {
2703                uint8_t upperLimit = uint8_t((z + 1) * 128.0 / pDimDef->zones - 1);
2704                for (int i = 0 ; i < 1 << iCurrentBits ; i++) {
2705                    pDimensionRegions[((i & ~mask) << pDimDef->bits) |
2706                                      (z << bitpos) |
2707                                      (i & mask)]->DimensionUpperLimits[pos] = upperLimit;
2708                }
2709          }          }
2710    
2711          Dimensions++;          Dimensions++;
# Line 2426  namespace { Line 2748  namespace {
2748          for (int i = iDimensionNr + 1; i < Dimensions; i++)          for (int i = iDimensionNr + 1; i < Dimensions; i++)
2749              iUpperBits += pDimensionDefinitions[i].bits;              iUpperBits += pDimensionDefinitions[i].bits;
2750    
2751            RIFF::List* _3prg = pCkRegion->GetSubList(LIST_TYPE_3PRG);
2752    
2753          // delete dimension regions which belong to the given dimension          // delete dimension regions which belong to the given dimension
2754          // (that is where the dimension's bit > 0)          // (that is where the dimension's bit > 0)
2755          for (int iUpperBit = 0; iUpperBit < 1 << iUpperBits; iUpperBit++) {          for (int iUpperBit = 0; iUpperBit < 1 << iUpperBits; iUpperBit++) {
# Line 2434  namespace { Line 2758  namespace {
2758                      int iToDelete = iUpperBit    << (pDimensionDefinitions[iDimensionNr].bits + iLowerBits) |                      int iToDelete = iUpperBit    << (pDimensionDefinitions[iDimensionNr].bits + iLowerBits) |
2759                                      iObsoleteBit << iLowerBits |                                      iObsoleteBit << iLowerBits |
2760                                      iLowerBit;                                      iLowerBit;
2761    
2762                        _3prg->DeleteSubChunk(pDimensionRegions[iToDelete]->pParentList);
2763                      delete pDimensionRegions[iToDelete];                      delete pDimensionRegions[iToDelete];
2764                      pDimensionRegions[iToDelete] = NULL;                      pDimensionRegions[iToDelete] = NULL;
2765                      DimensionRegions--;                      DimensionRegions--;
# Line 2454  namespace { Line 2780  namespace {
2780              }              }
2781          }          }
2782    
2783            // remove the this dimension from the upper limits arrays
2784            for (int j = 0 ; j < 256 && pDimensionRegions[j] ; j++) {
2785                DimensionRegion* d = pDimensionRegions[j];
2786                for (int i = iDimensionNr + 1; i < Dimensions; i++) {
2787                    d->DimensionUpperLimits[i - 1] = d->DimensionUpperLimits[i];
2788                }
2789                d->DimensionUpperLimits[Dimensions - 1] = 127;
2790            }
2791    
2792          // 'remove' dimension definition          // 'remove' dimension definition
2793          for (int i = iDimensionNr + 1; i < Dimensions; i++) {          for (int i = iDimensionNr + 1; i < Dimensions; i++) {
2794              pDimensionDefinitions[i - 1] = pDimensionDefinitions[i];              pDimensionDefinitions[i - 1] = pDimensionDefinitions[i];
# Line 2589  namespace { Line 2924  namespace {
2924      }      }
2925    
2926    
2927    // *************** MidiRule ***************
2928    // *
2929    
2930    MidiRuleCtrlTrigger::MidiRuleCtrlTrigger(RIFF::Chunk* _3ewg) {
2931        _3ewg->SetPos(36);
2932        Triggers = _3ewg->ReadUint8();
2933        _3ewg->SetPos(40);
2934        ControllerNumber = _3ewg->ReadUint8();
2935        _3ewg->SetPos(46);
2936        for (int i = 0 ; i < Triggers ; i++) {
2937            pTriggers[i].TriggerPoint = _3ewg->ReadUint8();
2938            pTriggers[i].Descending = _3ewg->ReadUint8();
2939            pTriggers[i].VelSensitivity = _3ewg->ReadUint8();
2940            pTriggers[i].Key = _3ewg->ReadUint8();
2941            pTriggers[i].NoteOff = _3ewg->ReadUint8();
2942            pTriggers[i].Velocity = _3ewg->ReadUint8();
2943            pTriggers[i].OverridePedal = _3ewg->ReadUint8();
2944            _3ewg->ReadUint8();
2945        }
2946    }
2947    
2948    
2949  // *************** Instrument ***************  // *************** Instrument ***************
2950  // *  // *
2951    
2952      Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) {      Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) {
2953          static const DLS::Info::FixedStringLength fixedStringLengths[] = {          static const DLS::Info::string_length_t fixedStringLengths[] = {
2954              { CHUNK_ID_INAM, 64 },              { CHUNK_ID_INAM, 64 },
2955              { CHUNK_ID_ISFT, 12 },              { CHUNK_ID_ISFT, 12 },
2956              { 0, 0 }              { 0, 0 }
2957          };          };
2958          pInfo->FixedStringLengths = fixedStringLengths;          pInfo->SetFixedStringLengths(fixedStringLengths);
2959    
2960          // Initialization          // Initialization
2961          for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;          for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;
2962            EffectSend = 0;
2963            Attenuation = 0;
2964            FineTune = 0;
2965            PitchbendRange = 0;
2966            PianoReleaseMode = false;
2967            DimensionKeyRange.low = 0;
2968            DimensionKeyRange.high = 0;
2969            pMidiRules = new MidiRule*[3];
2970            pMidiRules[0] = NULL;
2971    
2972          // Loading          // Loading
2973          RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART);          RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART);
# Line 2617  namespace { Line 2982  namespace {
2982                  PianoReleaseMode       = dimkeystart & 0x01;                  PianoReleaseMode       = dimkeystart & 0x01;
2983                  DimensionKeyRange.low  = dimkeystart >> 1;                  DimensionKeyRange.low  = dimkeystart >> 1;
2984                  DimensionKeyRange.high = _3ewg->ReadUint8();                  DimensionKeyRange.high = _3ewg->ReadUint8();
2985    
2986                    if (_3ewg->GetSize() > 32) {
2987                        // read MIDI rules
2988                        int i = 0;
2989                        _3ewg->SetPos(32);
2990                        uint8_t id1 = _3ewg->ReadUint8();
2991                        uint8_t id2 = _3ewg->ReadUint8();
2992    
2993                        if (id1 == 4 && id2 == 16) {
2994                            pMidiRules[i++] = new MidiRuleCtrlTrigger(_3ewg);
2995                        }
2996                        //TODO: all the other types of rules
2997    
2998                        pMidiRules[i] = NULL;
2999                    }
3000              }              }
3001          }          }
3002    
3003          if (!pRegions) pRegions = new RegionList;          if (pFile->GetAutoLoad()) {
3004          RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN);              if (!pRegions) pRegions = new RegionList;
3005          if (lrgn) {              RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN);
3006              RIFF::List* rgn = lrgn->GetFirstSubList();              if (lrgn) {
3007              while (rgn) {                  RIFF::List* rgn = lrgn->GetFirstSubList();
3008                  if (rgn->GetListType() == LIST_TYPE_RGN) {                  while (rgn) {
3009                      __notify_progress(pProgress, (float) pRegions->size() / (float) Regions);                      if (rgn->GetListType() == LIST_TYPE_RGN) {
3010                      pRegions->push_back(new Region(this, rgn));                          __notify_progress(pProgress, (float) pRegions->size() / (float) Regions);
3011                            pRegions->push_back(new Region(this, rgn));
3012                        }
3013                        rgn = lrgn->GetNextSubList();
3014                  }                  }
3015                  rgn = lrgn->GetNextSubList();                  // Creating Region Key Table for fast lookup
3016                    UpdateRegionKeyTable();
3017              }              }
             // Creating Region Key Table for fast lookup  
             UpdateRegionKeyTable();  
3018          }          }
3019    
3020          __notify_progress(pProgress, 1.0f); // notify done          __notify_progress(pProgress, 1.0f); // notify done
3021      }      }
3022    
3023      void Instrument::UpdateRegionKeyTable() {      void Instrument::UpdateRegionKeyTable() {
3024            for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;
3025          RegionList::iterator iter = pRegions->begin();          RegionList::iterator iter = pRegions->begin();
3026          RegionList::iterator end  = pRegions->end();          RegionList::iterator end  = pRegions->end();
3027          for (; iter != end; ++iter) {          for (; iter != end; ++iter) {
# Line 2650  namespace { Line 3033  namespace {
3033      }      }
3034    
3035      Instrument::~Instrument() {      Instrument::~Instrument() {
3036            delete[] pMidiRules;
3037      }      }
3038    
3039      /**      /**
# Line 2678  namespace { Line 3062  namespace {
3062          if (!lart)  lart = pCkInstrument->AddSubList(LIST_TYPE_LART);          if (!lart)  lart = pCkInstrument->AddSubList(LIST_TYPE_LART);
3063          // make sure '3ewg' RIFF chunk exists          // make sure '3ewg' RIFF chunk exists
3064          RIFF::Chunk* _3ewg = lart->GetSubChunk(CHUNK_ID_3EWG);          RIFF::Chunk* _3ewg = lart->GetSubChunk(CHUNK_ID_3EWG);
3065          if (!_3ewg)  _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, 12);          if (!_3ewg)  {
3066                File* pFile = (File*) GetParent();
3067    
3068                // 3ewg is bigger in gig3, as it includes the iMIDI rules
3069                int size = (pFile->pVersion && pFile->pVersion->major == 3) ? 16416 : 12;
3070                _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, size);
3071                memset(_3ewg->LoadChunkData(), 0, size);
3072            }
3073          // update '3ewg' RIFF chunk          // update '3ewg' RIFF chunk
3074          uint8_t* pData = (uint8_t*) _3ewg->LoadChunkData();          uint8_t* pData = (uint8_t*) _3ewg->LoadChunkData();
3075          store16(&pData[0], EffectSend);          store16(&pData[0], EffectSend);
3076          store32(&pData[2], Attenuation);          store32(&pData[2], Attenuation);
3077          store16(&pData[6], FineTune);          store16(&pData[6], FineTune);
3078          store16(&pData[8], PitchbendRange);          store16(&pData[8], PitchbendRange);
3079          const uint8_t dimkeystart = (PianoReleaseMode) ? 0x01 : 0x00 |          const uint8_t dimkeystart = (PianoReleaseMode ? 0x01 : 0x00) |
3080                                      DimensionKeyRange.low << 1;                                      DimensionKeyRange.low << 1;
3081          pData[10] = dimkeystart;          pData[10] = dimkeystart;
3082          pData[11] = DimensionKeyRange.high;          pData[11] = DimensionKeyRange.high;
# Line 2699  namespace { Line 3090  namespace {
3090       *             there is no Region defined for the given \a Key       *             there is no Region defined for the given \a Key
3091       */       */
3092      Region* Instrument::GetRegion(unsigned int Key) {      Region* Instrument::GetRegion(unsigned int Key) {
3093          if (!pRegions || !pRegions->size() || Key > 127) return NULL;          if (!pRegions || pRegions->empty() || Key > 127) return NULL;
3094          return RegionKeyTable[Key];          return RegionKeyTable[Key];
3095    
3096          /*for (int i = 0; i < Regions; i++) {          /*for (int i = 0; i < Regions; i++) {
# Line 2757  namespace { Line 3148  namespace {
3148          UpdateRegionKeyTable();          UpdateRegionKeyTable();
3149      }      }
3150    
3151        /**
3152         * Returns a MIDI rule of the instrument.
3153         *
3154         * The list of MIDI rules, at least in gig v3, always contains at
3155         * most two rules. The second rule can only be the DEF filter
3156         * (which currently isn't supported by libgig).
3157         *
3158         * @param i - MIDI rule number
3159         * @returns   pointer address to MIDI rule number i or NULL if there is none
3160         */
3161        MidiRule* Instrument::GetMidiRule(int i) {
3162            return pMidiRules[i];
3163        }
3164    
3165    
3166  // *************** Group ***************  // *************** Group ***************
# Line 2790  namespace { Line 3194  namespace {
3194      void Group::UpdateChunks() {      void Group::UpdateChunks() {
3195          // make sure <3gri> and <3gnl> list chunks exist          // make sure <3gri> and <3gnl> list chunks exist
3196          RIFF::List* _3gri = pFile->pRIFF->GetSubList(LIST_TYPE_3GRI);          RIFF::List* _3gri = pFile->pRIFF->GetSubList(LIST_TYPE_3GRI);
3197          if (!_3gri) _3gri = pFile->pRIFF->AddSubList(LIST_TYPE_3GRI);          if (!_3gri) {
3198                _3gri = pFile->pRIFF->AddSubList(LIST_TYPE_3GRI);
3199                pFile->pRIFF->MoveSubChunk(_3gri, pFile->pRIFF->GetSubChunk(CHUNK_ID_PTBL));
3200            }
3201          RIFF::List* _3gnl = _3gri->GetSubList(LIST_TYPE_3GNL);          RIFF::List* _3gnl = _3gri->GetSubList(LIST_TYPE_3GNL);
3202          if (!_3gnl) _3gnl = pFile->pRIFF->AddSubList(LIST_TYPE_3GNL);          if (!_3gnl) _3gnl = _3gri->AddSubList(LIST_TYPE_3GNL);
3203    
3204            if (!pNameChunk && pFile->pVersion && pFile->pVersion->major == 3) {
3205                // v3 has a fixed list of 128 strings, find a free one
3206                for (RIFF::Chunk* ck = _3gnl->GetFirstSubChunk() ; ck ; ck = _3gnl->GetNextSubChunk()) {
3207                    if (strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) {
3208                        pNameChunk = ck;
3209                        break;
3210                    }
3211                }
3212            }
3213    
3214          // now store the name of this group as <3gnm> chunk as subchunk of the <3gnl> list chunk          // now store the name of this group as <3gnm> chunk as subchunk of the <3gnl> list chunk
3215          ::SaveString(CHUNK_ID_3GNM, pNameChunk, _3gnl, Name, String("Unnamed Group"), true, 64);          ::SaveString(CHUNK_ID_3GNM, pNameChunk, _3gnl, Name, String("Unnamed Group"), true, 64);
3216      }      }
# Line 2868  namespace { Line 3286  namespace {
3286  // *************** File ***************  // *************** File ***************
3287  // *  // *
3288    
3289      const DLS::Info::FixedStringLength File::FixedStringLengths[] = {      /// Reflects Gigasampler file format version 2.0 (1998-06-28).
3290        const DLS::version_t File::VERSION_2 = {
3291            0, 2, 19980628 & 0xffff, 19980628 >> 16
3292        };
3293    
3294        /// Reflects Gigasampler file format version 3.0 (2003-03-31).
3295        const DLS::version_t File::VERSION_3 = {
3296            0, 3, 20030331 & 0xffff, 20030331 >> 16
3297        };
3298    
3299        static const DLS::Info::string_length_t _FileFixedStringLengths[] = {
3300          { CHUNK_ID_IARL, 256 },          { CHUNK_ID_IARL, 256 },
3301          { CHUNK_ID_IART, 128 },          { CHUNK_ID_IART, 128 },
3302          { CHUNK_ID_ICMS, 128 },          { CHUNK_ID_ICMS, 128 },
# Line 2890  namespace { Line 3318  namespace {
3318      };      };
3319    
3320      File::File() : DLS::File() {      File::File() : DLS::File() {
3321            bAutoLoad = true;
3322            *pVersion = VERSION_3;
3323          pGroups = NULL;          pGroups = NULL;
3324          pInfo->FixedStringLengths = FixedStringLengths;          pInfo->SetFixedStringLengths(_FileFixedStringLengths);
3325            pInfo->ArchivalLocation = String(256, ' ');
3326    
3327            // add some mandatory chunks to get the file chunks in right
3328            // order (INFO chunk will be moved to first position later)
3329            pRIFF->AddSubChunk(CHUNK_ID_VERS, 8);
3330            pRIFF->AddSubChunk(CHUNK_ID_COLH, 4);
3331            pRIFF->AddSubChunk(CHUNK_ID_DLID, 16);
3332    
3333            GenerateDLSID();
3334      }      }
3335    
3336      File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) {      File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) {
3337            bAutoLoad = true;
3338          pGroups = NULL;          pGroups = NULL;
3339          pInfo->FixedStringLengths = FixedStringLengths;          pInfo->SetFixedStringLengths(_FileFixedStringLengths);
3340      }      }
3341    
3342      File::~File() {      File::~File() {
# Line 2938  namespace { Line 3378  namespace {
3378         // create new Sample object and its respective 'wave' list chunk         // create new Sample object and its respective 'wave' list chunk
3379         RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);         RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);
3380         Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);         Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);
3381    
3382           // add mandatory chunks to get the chunks in right order
3383           wave->AddSubChunk(CHUNK_ID_FMT, 16);
3384           wave->AddSubList(LIST_TYPE_INFO);
3385    
3386         pSamples->push_back(pSample);         pSamples->push_back(pSample);
3387         return pSample;         return pSample;
3388      }      }
3389    
3390      /** @brief Delete a sample.      /** @brief Delete a sample.
3391       *       *
3392       * 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
3393       * to call Save() to make this persistent to the file.       * references to this sample from Regions and DimensionRegions will be
3394         * removed. You have to call Save() to make this persistent to the file.
3395       *       *
3396       * @param pSample - sample to delete       * @param pSample - sample to delete
3397       * @throws gig::Exception if given sample could not be found       * @throws gig::Exception if given sample could not be found
# Line 2957  namespace { Line 3403  namespace {
3403          if (SamplesIterator != pSamples->end() && *SamplesIterator == pSample) ++SamplesIterator; // avoid iterator invalidation          if (SamplesIterator != pSamples->end() && *SamplesIterator == pSample) ++SamplesIterator; // avoid iterator invalidation
3404          pSamples->erase(iter);          pSamples->erase(iter);
3405          delete pSample;          delete pSample;
3406    
3407            SampleList::iterator tmp = SamplesIterator;
3408            // remove all references to the sample
3409            for (Instrument* instrument = GetFirstInstrument() ; instrument ;
3410                 instrument = GetNextInstrument()) {
3411                for (Region* region = instrument->GetFirstRegion() ; region ;
3412                     region = instrument->GetNextRegion()) {
3413    
3414                    if (region->GetSample() == pSample) region->SetSample(NULL);
3415    
3416                    for (int i = 0 ; i < region->DimensionRegions ; i++) {
3417                        gig::DimensionRegion *d = region->pDimensionRegions[i];
3418                        if (d->pSample == pSample) d->pSample = NULL;
3419                    }
3420                }
3421            }
3422            SamplesIterator = tmp; // restore iterator
3423      }      }
3424    
3425      void File::LoadSamples() {      void File::LoadSamples() {
# Line 3047  namespace { Line 3510  namespace {
3510              progress_t subprogress;              progress_t subprogress;
3511              __divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask              __divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask
3512              __notify_progress(&subprogress, 0.0f);              __notify_progress(&subprogress, 0.0f);
3513              GetFirstSample(&subprogress); // now force all samples to be loaded              if (GetAutoLoad())
3514                    GetFirstSample(&subprogress); // now force all samples to be loaded
3515              __notify_progress(&subprogress, 1.0f);              __notify_progress(&subprogress, 1.0f);
3516    
3517              // instrument loading subtask              // instrument loading subtask
# Line 3080  namespace { Line 3544  namespace {
3544         __ensureMandatoryChunksExist();         __ensureMandatoryChunksExist();
3545         RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);         RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
3546         RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);         RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);
3547    
3548           // add mandatory chunks to get the chunks in right order
3549           lstInstr->AddSubList(LIST_TYPE_INFO);
3550           lstInstr->AddSubChunk(CHUNK_ID_DLID, 16);
3551    
3552         Instrument* pInstrument = new Instrument(this, lstInstr);         Instrument* pInstrument = new Instrument(this, lstInstr);
3553           pInstrument->GenerateDLSID();
3554    
3555           lstInstr->AddSubChunk(CHUNK_ID_INSH, 12);
3556    
3557           // this string is needed for the gig to be loadable in GSt:
3558           pInstrument->pInfo->Software = "Endless Wave";
3559    
3560         pInstruments->push_back(pInstrument);         pInstruments->push_back(pInstrument);
3561         return pInstrument;         return pInstrument;
3562      }      }
# Line 3131  namespace { Line 3607  namespace {
3607          }          }
3608      }      }
3609    
3610        /// Updates the 3crc chunk with the checksum of a sample. The
3611        /// update is done directly to disk, as this method is called
3612        /// after File::Save()
3613        void File::SetSampleChecksum(Sample* pSample, uint32_t crc) {
3614            RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
3615            if (!_3crc) return;
3616    
3617            // get the index of the sample
3618            int iWaveIndex = -1;
3619            File::SampleList::iterator iter = pSamples->begin();
3620            File::SampleList::iterator end  = pSamples->end();
3621            for (int index = 0; iter != end; ++iter, ++index) {
3622                if (*iter == pSample) {
3623                    iWaveIndex = index;
3624                    break;
3625                }
3626            }
3627            if (iWaveIndex < 0) throw gig::Exception("Could not update crc, could not find sample");
3628    
3629            // write the CRC-32 checksum to disk
3630            _3crc->SetPos(iWaveIndex * 8);
3631            uint32_t tmp = 1;
3632            _3crc->WriteUint32(&tmp); // unknown, always 1?
3633            _3crc->WriteUint32(&crc);
3634        }
3635    
3636      Group* File::GetFirstGroup() {      Group* File::GetFirstGroup() {
3637          if (!pGroups) LoadGroups();          if (!pGroups) LoadGroups();
3638          // there must always be at least one group          // there must always be at least one group
# Line 3223  namespace { Line 3725  namespace {
3725                  RIFF::Chunk* ck = lst3gnl->GetFirstSubChunk();                  RIFF::Chunk* ck = lst3gnl->GetFirstSubChunk();
3726                  while (ck) {                  while (ck) {
3727                      if (ck->GetChunkID() == CHUNK_ID_3GNM) {                      if (ck->GetChunkID() == CHUNK_ID_3GNM) {
3728                            if (pVersion && pVersion->major == 3 &&
3729                                strcmp(static_cast<char*>(ck->LoadChunkData()), "") == 0) break;
3730    
3731                          pGroups->push_back(new Group(this, ck));                          pGroups->push_back(new Group(this, ck));
3732                      }                      }
3733                      ck = lst3gnl->GetNextSubChunk();                      ck = lst3gnl->GetNextSubChunk();
# Line 3248  namespace { Line 3753  namespace {
3753       * @throws Exception - on errors       * @throws Exception - on errors
3754       */       */
3755      void File::UpdateChunks() {      void File::UpdateChunks() {
3756            bool newFile = pRIFF->GetSubList(LIST_TYPE_INFO) == NULL;
3757    
3758            b64BitWavePoolOffsets = pVersion && pVersion->major == 3;
3759    
3760          // first update base class's chunks          // first update base class's chunks
3761          DLS::File::UpdateChunks();          DLS::File::UpdateChunks();
3762    
3763            if (newFile) {
3764                // INFO was added by Resource::UpdateChunks - make sure it
3765                // is placed first in file
3766                RIFF::Chunk* info = pRIFF->GetSubList(LIST_TYPE_INFO);
3767                RIFF::Chunk* first = pRIFF->GetFirstSubChunk();
3768                if (first != info) {
3769                    pRIFF->MoveSubChunk(info, first);
3770                }
3771            }
3772    
3773          // update group's chunks          // update group's chunks
3774          if (pGroups) {          if (pGroups) {
3775              std::list<Group*>::iterator iter = pGroups->begin();              std::list<Group*>::iterator iter = pGroups->begin();
# Line 3258  namespace { Line 3777  namespace {
3777              for (; iter != end; ++iter) {              for (; iter != end; ++iter) {
3778                  (*iter)->UpdateChunks();                  (*iter)->UpdateChunks();
3779              }              }
3780          }  
3781                // v3: make sure the file has 128 3gnm chunks
3782                if (pVersion && pVersion->major == 3) {
3783                    RIFF::List* _3gnl = pRIFF->GetSubList(LIST_TYPE_3GRI)->GetSubList(LIST_TYPE_3GNL);
3784                    RIFF::Chunk* _3gnm = _3gnl->GetFirstSubChunk();
3785                    for (int i = 0 ; i < 128 ; i++) {
3786                        if (i >= pGroups->size()) ::SaveString(CHUNK_ID_3GNM, _3gnm, _3gnl, "", "", true, 64);
3787                        if (_3gnm) _3gnm = _3gnl->GetNextSubChunk();
3788                    }
3789                }
3790            }
3791    
3792            // update einf chunk
3793    
3794            // The einf chunk contains statistics about the gig file, such
3795            // as the number of regions and samples used by each
3796            // instrument. It is divided in equally sized parts, where the
3797            // first part contains information about the whole gig file,
3798            // and the rest of the parts map to each instrument in the
3799            // file.
3800            //
3801            // At the end of each part there is a bit map of each sample
3802            // in the file, where a set bit means that the sample is used
3803            // by the file/instrument.
3804            //
3805            // Note that there are several fields with unknown use. These
3806            // are set to zero.
3807    
3808            int sublen = pSamples->size() / 8 + 49;
3809            int einfSize = (Instruments + 1) * sublen;
3810    
3811            RIFF::Chunk* einf = pRIFF->GetSubChunk(CHUNK_ID_EINF);
3812            if (einf) {
3813                if (einf->GetSize() != einfSize) {
3814                    einf->Resize(einfSize);
3815                    memset(einf->LoadChunkData(), 0, einfSize);
3816                }
3817            } else if (newFile) {
3818                einf = pRIFF->AddSubChunk(CHUNK_ID_EINF, einfSize);
3819            }
3820            if (einf) {
3821                uint8_t* pData = (uint8_t*) einf->LoadChunkData();
3822    
3823                std::map<gig::Sample*,int> sampleMap;
3824                int sampleIdx = 0;
3825                for (Sample* pSample = GetFirstSample(); pSample; pSample = GetNextSample()) {
3826                    sampleMap[pSample] = sampleIdx++;
3827                }
3828    
3829                int totnbusedsamples = 0;
3830                int totnbusedchannels = 0;
3831                int totnbregions = 0;
3832                int totnbdimregions = 0;
3833                int totnbloops = 0;
3834                int instrumentIdx = 0;
3835    
3836                memset(&pData[48], 0, sublen - 48);
3837    
3838                for (Instrument* instrument = GetFirstInstrument() ; instrument ;
3839                     instrument = GetNextInstrument()) {
3840                    int nbusedsamples = 0;
3841                    int nbusedchannels = 0;
3842                    int nbdimregions = 0;
3843                    int nbloops = 0;
3844    
3845                    memset(&pData[(instrumentIdx + 1) * sublen + 48], 0, sublen - 48);
3846    
3847                    for (Region* region = instrument->GetFirstRegion() ; region ;
3848                         region = instrument->GetNextRegion()) {
3849                        for (int i = 0 ; i < region->DimensionRegions ; i++) {
3850                            gig::DimensionRegion *d = region->pDimensionRegions[i];
3851                            if (d->pSample) {
3852                                int sampleIdx = sampleMap[d->pSample];
3853                                int byte = 48 + sampleIdx / 8;
3854                                int bit = 1 << (sampleIdx & 7);
3855                                if ((pData[(instrumentIdx + 1) * sublen + byte] & bit) == 0) {
3856                                    pData[(instrumentIdx + 1) * sublen + byte] |= bit;
3857                                    nbusedsamples++;
3858                                    nbusedchannels += d->pSample->Channels;
3859    
3860                                    if ((pData[byte] & bit) == 0) {
3861                                        pData[byte] |= bit;
3862                                        totnbusedsamples++;
3863                                        totnbusedchannels += d->pSample->Channels;
3864                                    }
3865                                }
3866                            }
3867                            if (d->SampleLoops) nbloops++;
3868                        }
3869                        nbdimregions += region->DimensionRegions;
3870                    }
3871                    // first 4 bytes unknown - sometimes 0, sometimes length of einf part
3872                    // store32(&pData[(instrumentIdx + 1) * sublen], sublen);
3873                    store32(&pData[(instrumentIdx + 1) * sublen + 4], nbusedchannels);
3874                    store32(&pData[(instrumentIdx + 1) * sublen + 8], nbusedsamples);
3875                    store32(&pData[(instrumentIdx + 1) * sublen + 12], 1);
3876                    store32(&pData[(instrumentIdx + 1) * sublen + 16], instrument->Regions);
3877                    store32(&pData[(instrumentIdx + 1) * sublen + 20], nbdimregions);
3878                    store32(&pData[(instrumentIdx + 1) * sublen + 24], nbloops);
3879                    // next 8 bytes unknown
3880                    store32(&pData[(instrumentIdx + 1) * sublen + 36], instrumentIdx);
3881                    store32(&pData[(instrumentIdx + 1) * sublen + 40], pSamples->size());
3882                    // next 4 bytes unknown
3883    
3884                    totnbregions += instrument->Regions;
3885                    totnbdimregions += nbdimregions;
3886                    totnbloops += nbloops;
3887                    instrumentIdx++;
3888                }
3889                // first 4 bytes unknown - sometimes 0, sometimes length of einf part
3890                // store32(&pData[0], sublen);
3891                store32(&pData[4], totnbusedchannels);
3892                store32(&pData[8], totnbusedsamples);
3893                store32(&pData[12], Instruments);
3894                store32(&pData[16], totnbregions);
3895                store32(&pData[20], totnbdimregions);
3896                store32(&pData[24], totnbloops);
3897                // next 8 bytes unknown
3898                // next 4 bytes unknown, not always 0
3899                store32(&pData[40], pSamples->size());
3900                // next 4 bytes unknown
3901            }
3902    
3903            // update 3crc chunk
3904    
3905            // The 3crc chunk contains CRC-32 checksums for the
3906            // samples. The actual checksum values will be filled in
3907            // later, by Sample::Write.
3908    
3909            RIFF::Chunk* _3crc = pRIFF->GetSubChunk(CHUNK_ID_3CRC);
3910            if (_3crc) {
3911                _3crc->Resize(pSamples->size() * 8);
3912            } else if (newFile) {
3913                _3crc = pRIFF->AddSubChunk(CHUNK_ID_3CRC, pSamples->size() * 8);
3914                _3crc->LoadChunkData();
3915    
3916                // the order of einf and 3crc is not the same in v2 and v3
3917                if (einf && pVersion && pVersion->major == 3) pRIFF->MoveSubChunk(_3crc, einf);
3918            }
3919        }
3920    
3921        /**
3922         * Enable / disable automatic loading. By default this properyt is
3923         * enabled and all informations are loaded automatically. However
3924         * loading all Regions, DimensionRegions and especially samples might
3925         * take a long time for large .gig files, and sometimes one might only
3926         * be interested in retrieving very superficial informations like the
3927         * amount of instruments and their names. In this case one might disable
3928         * automatic loading to avoid very slow response times.
3929         *
3930         * @e CAUTION: by disabling this property many pointers (i.e. sample
3931         * references) and informations will have invalid or even undefined
3932         * data! This feature is currently only intended for retrieving very
3933         * superficial informations in a very fast way. Don't use it to retrieve
3934         * details like synthesis informations or even to modify .gig files!
3935         */
3936        void File::SetAutoLoad(bool b) {
3937            bAutoLoad = b;
3938        }
3939    
3940        /**
3941         * Returns whether automatic loading is enabled.
3942         * @see SetAutoLoad()
3943         */
3944        bool File::GetAutoLoad() {
3945            return bAutoLoad;
3946      }      }
3947    
3948    

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