/[svn]/libgig/trunk/src/gig.cpp
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revision 1317 by persson, Sat Sep 1 07:15:53 2007 UTC revision 1869 by persson, Sun Mar 22 11:13:25 2009 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   libgig - C++ cross-platform Gigasampler format file access library    *   *   libgig - C++ cross-platform Gigasampler format file access library    *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003-2007 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2009 by Christian Schoenebeck                      *
6   *                              <cuse@users.sourceforge.net>               *   *                              <cuse@users.sourceforge.net>               *
7   *                                                                         *   *                                                                         *
8   *   This library is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
# Line 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 278  namespace { Line 342  namespace {
342    
343    
344    
 // *************** CRC ***************  
 // *  
   
     const uint32_t* CRC::table(initTable());  
   
     uint32_t* CRC::initTable() {  
         uint32_t* res = new uint32_t[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;  
     }  
   
   
   
345  // *************** Sample ***************  // *************** Sample ***************
346  // *  // *
347    
# Line 323  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 631  namespace { Line 677  namespace {
677          if (SampleCount > this->SamplesTotal) SampleCount = this->SamplesTotal;          if (SampleCount > this->SamplesTotal) SampleCount = this->SamplesTotal;
678          if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart;          if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart;
679          unsigned long allocationsize = (SampleCount + NullSamplesCount) * this->FrameSize;          unsigned long allocationsize = (SampleCount + NullSamplesCount) * this->FrameSize;
680            SetPos(0); // reset read position to begin of sample
681          RAMCache.pStart            = new int8_t[allocationsize];          RAMCache.pStart            = new int8_t[allocationsize];
682          RAMCache.Size              = Read(RAMCache.pStart, SampleCount) * this->FrameSize;          RAMCache.Size              = Read(RAMCache.pStart, SampleCount) * this->FrameSize;
683          RAMCache.NullExtensionSize = allocationsize - RAMCache.Size;          RAMCache.NullExtensionSize = allocationsize - RAMCache.Size;
# Line 668  namespace { Line 715  namespace {
715          if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart;          if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart;
716          RAMCache.pStart = NULL;          RAMCache.pStart = NULL;
717          RAMCache.Size   = 0;          RAMCache.Size   = 0;
718            RAMCache.NullExtensionSize = 0;
719      }      }
720    
721      /** @brief Resize sample.      /** @brief Resize sample.
# Line 1168  namespace { Line 1216  namespace {
1216          // if this is the first write in this sample, reset the          // if this is the first write in this sample, reset the
1217          // checksum calculator          // checksum calculator
1218          if (pCkData->GetPos() == 0) {          if (pCkData->GetPos() == 0) {
1219              crc.reset();              __resetCRC(crc);
1220          }          }
1221          if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");          if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");
1222          unsigned long res;          unsigned long res;
# Line 1178  namespace { Line 1226  namespace {
1226              res = Channels == 2 ? pCkData->Write(pBuffer, SampleCount << 1, 2) >> 1              res = Channels == 2 ? pCkData->Write(pBuffer, SampleCount << 1, 2) >> 1
1227                                  : pCkData->Write(pBuffer, SampleCount, 2);                                  : pCkData->Write(pBuffer, SampleCount, 2);
1228          }          }
1229          crc.update((unsigned char *)pBuffer, SampleCount * FrameSize);          __calculateCRC((unsigned char *)pBuffer, SampleCount * FrameSize, crc);
1230    
1231          // if this is the last write, update the checksum chunk in the          // if this is the last write, update the checksum chunk in the
1232          // file          // file
1233          if (pCkData->GetPos() == pCkData->GetSize()) {          if (pCkData->GetPos() == pCkData->GetSize()) {
1234              File* pFile = static_cast<File*>(GetParent());              File* pFile = static_cast<File*>(GetParent());
1235              pFile->SetSampleChecksum(this, crc.getValue());              pFile->SetSampleChecksum(this, __encodeCRC(crc));
1236          }          }
1237          return res;          return res;
1238      }      }
# Line 1512  namespace { Line 1560  namespace {
1560                                                       VelocityResponseDepth,                                                       VelocityResponseDepth,
1561                                                       VelocityResponseCurveScaling);                                                       VelocityResponseCurveScaling);
1562    
1563          curve_type_t curveType = ReleaseVelocityResponseCurve;          pVelocityReleaseTable = GetReleaseVelocityTable(
1564          uint8_t depth = ReleaseVelocityResponseDepth;                                      ReleaseVelocityResponseCurve,
1565                                        ReleaseVelocityResponseDepth
1566          // this models a strange behaviour or bug in GSt: two of the                                  );
1567          // velocity response curves for release time are not used even  
1568          // if specified, instead another curve is chosen.          pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve,
1569          if ((curveType == curve_type_nonlinear && depth == 0) ||                                                        VCFVelocityDynamicRange,
1570              (curveType == curve_type_special   && depth == 4)) {                                                        VCFVelocityScale,
1571              curveType = curve_type_nonlinear;                                                        VCFCutoffController);
             depth = 3;  
         }  
         pVelocityReleaseTable = GetVelocityTable(curveType, depth, 0);  
   
         curveType = VCFVelocityCurve;  
         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;  
         }  
         pVelocityCutoffTable = GetVelocityTable(curveType, depth,  
                                                 VCFCutoffController <= vcf_cutoff_ctrl_none2 ? VCFVelocityScale : 0);  
1572    
1573          SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));          SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));
1574          VelocityTable = 0;          VelocityTable = 0;
# Line 1566  namespace { Line 1597  namespace {
1597      }      }
1598    
1599      /**      /**
1600         * Updates the respective member variable and updates @c SampleAttenuation
1601         * which depends on this value.
1602         */
1603        void DimensionRegion::SetGain(int32_t gain) {
1604            DLS::Sampler::SetGain(gain);
1605            SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360));
1606        }
1607    
1608        /**
1609       * Apply dimension region settings to the respective RIFF chunks. You       * Apply dimension region settings to the respective RIFF chunks. You
1610       * have to call File::Save() to make changes persistent.       * have to call File::Save() to make changes persistent.
1611       *       *
# Line 1797  namespace { Line 1837  namespace {
1837    
1838          const uint16_t eg3depth = (EG3Depth >= 0) ? EG3Depth          const uint16_t eg3depth = (EG3Depth >= 0) ? EG3Depth
1839                                                    : uint16_t(((-EG3Depth) - 1) ^ 0xffff); /* binary complementary for negatives */                                                    : uint16_t(((-EG3Depth) - 1) ^ 0xffff); /* binary complementary for negatives */
1840          pData[116] = eg3depth;          store16(&pData[116], eg3depth);
1841    
1842          // next 2 bytes unknown          // next 2 bytes unknown
1843    
# Line 1856  namespace { Line 1896  namespace {
1896          }          }
1897      }      }
1898    
1899        double* DimensionRegion::GetReleaseVelocityTable(curve_type_t releaseVelocityResponseCurve, uint8_t releaseVelocityResponseDepth) {
1900            curve_type_t curveType = releaseVelocityResponseCurve;
1901            uint8_t depth = releaseVelocityResponseDepth;
1902            // this models a strange behaviour or bug in GSt: two of the
1903            // velocity response curves for release time are not used even
1904            // if specified, instead another curve is chosen.
1905            if ((curveType == curve_type_nonlinear && depth == 0) ||
1906                (curveType == curve_type_special   && depth == 4)) {
1907                curveType = curve_type_nonlinear;
1908                depth = 3;
1909            }
1910            return GetVelocityTable(curveType, depth, 0);
1911        }
1912    
1913        double* DimensionRegion::GetCutoffVelocityTable(curve_type_t vcfVelocityCurve,
1914                                                        uint8_t vcfVelocityDynamicRange,
1915                                                        uint8_t vcfVelocityScale,
1916                                                        vcf_cutoff_ctrl_t vcfCutoffController)
1917        {
1918            curve_type_t curveType = vcfVelocityCurve;
1919            uint8_t depth = vcfVelocityDynamicRange;
1920            // even stranger GSt: two of the velocity response curves for
1921            // filter cutoff are not used, instead another special curve
1922            // is chosen. This curve is not used anywhere else.
1923            if ((curveType == curve_type_nonlinear && depth == 0) ||
1924                (curveType == curve_type_special   && depth == 4)) {
1925                curveType = curve_type_special;
1926                depth = 5;
1927            }
1928            return GetVelocityTable(curveType, depth,
1929                                    (vcfCutoffController <= vcf_cutoff_ctrl_none2)
1930                                        ? vcfVelocityScale : 0);
1931        }
1932    
1933      // 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
1934      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)
1935      {      {
# Line 2128  namespace { Line 2202  namespace {
2202          return pVelocityCutoffTable[MIDIKeyVelocity];          return pVelocityCutoffTable[MIDIKeyVelocity];
2203      }      }
2204    
2205        /**
2206         * Updates the respective member variable and the lookup table / cache
2207         * that depends on this value.
2208         */
2209        void DimensionRegion::SetVelocityResponseCurve(curve_type_t curve) {
2210            pVelocityAttenuationTable =
2211                GetVelocityTable(
2212                    curve, VelocityResponseDepth, VelocityResponseCurveScaling
2213                );
2214            VelocityResponseCurve = curve;
2215        }
2216    
2217        /**
2218         * Updates the respective member variable and the lookup table / cache
2219         * that depends on this value.
2220         */
2221        void DimensionRegion::SetVelocityResponseDepth(uint8_t depth) {
2222            pVelocityAttenuationTable =
2223                GetVelocityTable(
2224                    VelocityResponseCurve, depth, VelocityResponseCurveScaling
2225                );
2226            VelocityResponseDepth = depth;
2227        }
2228    
2229        /**
2230         * Updates the respective member variable and the lookup table / cache
2231         * that depends on this value.
2232         */
2233        void DimensionRegion::SetVelocityResponseCurveScaling(uint8_t scaling) {
2234            pVelocityAttenuationTable =
2235                GetVelocityTable(
2236                    VelocityResponseCurve, VelocityResponseDepth, scaling
2237                );
2238            VelocityResponseCurveScaling = scaling;
2239        }
2240    
2241        /**
2242         * Updates the respective member variable and the lookup table / cache
2243         * that depends on this value.
2244         */
2245        void DimensionRegion::SetReleaseVelocityResponseCurve(curve_type_t curve) {
2246            pVelocityReleaseTable = GetReleaseVelocityTable(curve, ReleaseVelocityResponseDepth);
2247            ReleaseVelocityResponseCurve = curve;
2248        }
2249    
2250        /**
2251         * Updates the respective member variable and the lookup table / cache
2252         * that depends on this value.
2253         */
2254        void DimensionRegion::SetReleaseVelocityResponseDepth(uint8_t depth) {
2255            pVelocityReleaseTable = GetReleaseVelocityTable(ReleaseVelocityResponseCurve, depth);
2256            ReleaseVelocityResponseDepth = depth;
2257        }
2258    
2259        /**
2260         * Updates the respective member variable and the lookup table / cache
2261         * that depends on this value.
2262         */
2263        void DimensionRegion::SetVCFCutoffController(vcf_cutoff_ctrl_t controller) {
2264            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, VCFVelocityDynamicRange, VCFVelocityScale, controller);
2265            VCFCutoffController = controller;
2266        }
2267    
2268        /**
2269         * Updates the respective member variable and the lookup table / cache
2270         * that depends on this value.
2271         */
2272        void DimensionRegion::SetVCFVelocityCurve(curve_type_t curve) {
2273            pVelocityCutoffTable = GetCutoffVelocityTable(curve, VCFVelocityDynamicRange, VCFVelocityScale, VCFCutoffController);
2274            VCFVelocityCurve = curve;
2275        }
2276    
2277        /**
2278         * Updates the respective member variable and the lookup table / cache
2279         * that depends on this value.
2280         */
2281        void DimensionRegion::SetVCFVelocityDynamicRange(uint8_t range) {
2282            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, range, VCFVelocityScale, VCFCutoffController);
2283            VCFVelocityDynamicRange = range;
2284        }
2285    
2286        /**
2287         * Updates the respective member variable and the lookup table / cache
2288         * that depends on this value.
2289         */
2290        void DimensionRegion::SetVCFVelocityScale(uint8_t scaling) {
2291            pVelocityCutoffTable = GetCutoffVelocityTable(VCFVelocityCurve, VCFVelocityDynamicRange, scaling, VCFCutoffController);
2292            VCFVelocityScale = scaling;
2293        }
2294    
2295      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) {
2296    
2297          // line-segment approximations of the 15 velocity curves          // line-segment approximations of the 15 velocity curves
# Line 2211  namespace { Line 2375  namespace {
2375    
2376          // Actual Loading          // Actual Loading
2377    
2378            if (!file->GetAutoLoad()) return;
2379    
2380          LoadDimensionRegions(rgnList);          LoadDimensionRegions(rgnList);
2381    
2382          RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK);          RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK);
# Line 2254  namespace { Line 2420  namespace {
2420              else              else
2421                  _3lnk->SetPos(44);                  _3lnk->SetPos(44);
2422    
2423              // load sample references              // load sample references (if auto loading is enabled)
2424              for (uint i = 0; i < DimensionRegions; i++) {              if (file->GetAutoLoad()) {
2425                  uint32_t wavepoolindex = _3lnk->ReadUint32();                  for (uint i = 0; i < DimensionRegions; i++) {
2426                  if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);                      uint32_t wavepoolindex = _3lnk->ReadUint32();
2427                        if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex);
2428                    }
2429                    GetSample(); // load global region sample reference
2430              }              }
             GetSample(); // load global region sample reference  
2431          } else {          } else {
2432              DimensionRegions = 0;              DimensionRegions = 0;
2433              for (int i = 0 ; i < 8 ; i++) {              for (int i = 0 ; i < 8 ; i++) {
# Line 2369  namespace { Line 2537  namespace {
2537          }          }
2538      }      }
2539    
2540        void Region::SetKeyRange(uint16_t Low, uint16_t High) {
2541            // update KeyRange struct and make sure regions are in correct order
2542            DLS::Region::SetKeyRange(Low, High);
2543            // update Region key table for fast lookup
2544            ((gig::Instrument*)GetParent())->UpdateRegionKeyTable();
2545        }
2546    
2547      void Region::UpdateVelocityTable() {      void Region::UpdateVelocityTable() {
2548          // get velocity dimension's index          // get velocity dimension's index
2549          int veldim = -1;          int veldim = -1;
# Line 2751  namespace { Line 2926  namespace {
2926      }      }
2927    
2928    
2929    // *************** MidiRule ***************
2930    // *
2931    
2932    MidiRuleCtrlTrigger::MidiRuleCtrlTrigger(RIFF::Chunk* _3ewg) {
2933        _3ewg->SetPos(36);
2934        Triggers = _3ewg->ReadUint8();
2935        _3ewg->SetPos(40);
2936        ControllerNumber = _3ewg->ReadUint8();
2937        _3ewg->SetPos(46);
2938        for (int i = 0 ; i < Triggers ; i++) {
2939            pTriggers[i].TriggerPoint = _3ewg->ReadUint8();
2940            pTriggers[i].Descending = _3ewg->ReadUint8();
2941            pTriggers[i].VelSensitivity = _3ewg->ReadUint8();
2942            pTriggers[i].Key = _3ewg->ReadUint8();
2943            pTriggers[i].NoteOff = _3ewg->ReadUint8();
2944            pTriggers[i].Velocity = _3ewg->ReadUint8();
2945            pTriggers[i].OverridePedal = _3ewg->ReadUint8();
2946            _3ewg->ReadUint8();
2947        }
2948    }
2949    
2950    
2951  // *************** Instrument ***************  // *************** Instrument ***************
2952  // *  // *
2953    
2954      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) {
2955          static const DLS::Info::FixedStringLength fixedStringLengths[] = {          static const DLS::Info::string_length_t fixedStringLengths[] = {
2956              { CHUNK_ID_INAM, 64 },              { CHUNK_ID_INAM, 64 },
2957              { CHUNK_ID_ISFT, 12 },              { CHUNK_ID_ISFT, 12 },
2958              { 0, 0 }              { 0, 0 }
2959          };          };
2960          pInfo->FixedStringLengths = fixedStringLengths;          pInfo->SetFixedStringLengths(fixedStringLengths);
2961    
2962          // Initialization          // Initialization
2963          for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;          for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;
# Line 2772  namespace { Line 2968  namespace {
2968          PianoReleaseMode = false;          PianoReleaseMode = false;
2969          DimensionKeyRange.low = 0;          DimensionKeyRange.low = 0;
2970          DimensionKeyRange.high = 0;          DimensionKeyRange.high = 0;
2971            pMidiRules = new MidiRule*[3];
2972            pMidiRules[0] = NULL;
2973    
2974          // Loading          // Loading
2975          RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART);          RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART);
# Line 2786  namespace { Line 2984  namespace {
2984                  PianoReleaseMode       = dimkeystart & 0x01;                  PianoReleaseMode       = dimkeystart & 0x01;
2985                  DimensionKeyRange.low  = dimkeystart >> 1;                  DimensionKeyRange.low  = dimkeystart >> 1;
2986                  DimensionKeyRange.high = _3ewg->ReadUint8();                  DimensionKeyRange.high = _3ewg->ReadUint8();
2987    
2988                    if (_3ewg->GetSize() > 32) {
2989                        // read MIDI rules
2990                        int i = 0;
2991                        _3ewg->SetPos(32);
2992                        uint8_t id1 = _3ewg->ReadUint8();
2993                        uint8_t id2 = _3ewg->ReadUint8();
2994    
2995                        if (id1 == 4 && id2 == 16) {
2996                            pMidiRules[i++] = new MidiRuleCtrlTrigger(_3ewg);
2997                        }
2998                        //TODO: all the other types of rules
2999    
3000                        pMidiRules[i] = NULL;
3001                    }
3002              }              }
3003          }          }
3004    
3005          if (!pRegions) pRegions = new RegionList;          if (pFile->GetAutoLoad()) {
3006          RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN);              if (!pRegions) pRegions = new RegionList;
3007          if (lrgn) {              RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN);
3008              RIFF::List* rgn = lrgn->GetFirstSubList();              if (lrgn) {
3009              while (rgn) {                  RIFF::List* rgn = lrgn->GetFirstSubList();
3010                  if (rgn->GetListType() == LIST_TYPE_RGN) {                  while (rgn) {
3011                      __notify_progress(pProgress, (float) pRegions->size() / (float) Regions);                      if (rgn->GetListType() == LIST_TYPE_RGN) {
3012                      pRegions->push_back(new Region(this, rgn));                          __notify_progress(pProgress, (float) pRegions->size() / (float) Regions);
3013                            pRegions->push_back(new Region(this, rgn));
3014                        }
3015                        rgn = lrgn->GetNextSubList();
3016                  }                  }
3017                  rgn = lrgn->GetNextSubList();                  // Creating Region Key Table for fast lookup
3018                    UpdateRegionKeyTable();
3019              }              }
             // Creating Region Key Table for fast lookup  
             UpdateRegionKeyTable();  
3020          }          }
3021    
3022          __notify_progress(pProgress, 1.0f); // notify done          __notify_progress(pProgress, 1.0f); // notify done
3023      }      }
3024    
3025      void Instrument::UpdateRegionKeyTable() {      void Instrument::UpdateRegionKeyTable() {
3026            for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL;
3027          RegionList::iterator iter = pRegions->begin();          RegionList::iterator iter = pRegions->begin();
3028          RegionList::iterator end  = pRegions->end();          RegionList::iterator end  = pRegions->end();
3029          for (; iter != end; ++iter) {          for (; iter != end; ++iter) {
# Line 2819  namespace { Line 3035  namespace {
3035      }      }
3036    
3037      Instrument::~Instrument() {      Instrument::~Instrument() {
3038            delete[] pMidiRules;
3039      }      }
3040    
3041      /**      /**
# Line 2875  namespace { Line 3092  namespace {
3092       *             there is no Region defined for the given \a Key       *             there is no Region defined for the given \a Key
3093       */       */
3094      Region* Instrument::GetRegion(unsigned int Key) {      Region* Instrument::GetRegion(unsigned int Key) {
3095          if (!pRegions || !pRegions->size() || Key > 127) return NULL;          if (!pRegions || pRegions->empty() || Key > 127) return NULL;
3096          return RegionKeyTable[Key];          return RegionKeyTable[Key];
3097    
3098          /*for (int i = 0; i < Regions; i++) {          /*for (int i = 0; i < Regions; i++) {
# Line 2933  namespace { Line 3150  namespace {
3150          UpdateRegionKeyTable();          UpdateRegionKeyTable();
3151      }      }
3152    
3153        /**
3154         * Returns a MIDI rule of the instrument.
3155         *
3156         * The list of MIDI rules, at least in gig v3, always contains at
3157         * most two rules. The second rule can only be the DEF filter
3158         * (which currently isn't supported by libgig).
3159         *
3160         * @param i - MIDI rule number
3161         * @returns   pointer address to MIDI rule number i or NULL if there is none
3162         */
3163        MidiRule* Instrument::GetMidiRule(int i) {
3164            return pMidiRules[i];
3165        }
3166    
3167    
3168  // *************** Group ***************  // *************** Group ***************
# Line 3058  namespace { Line 3288  namespace {
3288  // *************** File ***************  // *************** File ***************
3289  // *  // *
3290    
3291      // File version 2.0, 1998-06-28      /// Reflects Gigasampler file format version 2.0 (1998-06-28).
3292      const DLS::version_t File::VERSION_2 = {      const DLS::version_t File::VERSION_2 = {
3293          0, 2, 19980628 & 0xffff, 19980628 >> 16          0, 2, 19980628 & 0xffff, 19980628 >> 16
3294      };      };
3295    
3296      // File version 3.0, 2003-03-31      /// Reflects Gigasampler file format version 3.0 (2003-03-31).
3297      const DLS::version_t File::VERSION_3 = {      const DLS::version_t File::VERSION_3 = {
3298          0, 3, 20030331 & 0xffff, 20030331 >> 16          0, 3, 20030331 & 0xffff, 20030331 >> 16
3299      };      };
3300    
3301      const DLS::Info::FixedStringLength File::FixedStringLengths[] = {      static const DLS::Info::string_length_t _FileFixedStringLengths[] = {
3302          { CHUNK_ID_IARL, 256 },          { CHUNK_ID_IARL, 256 },
3303          { CHUNK_ID_IART, 128 },          { CHUNK_ID_IART, 128 },
3304          { CHUNK_ID_ICMS, 128 },          { CHUNK_ID_ICMS, 128 },
# Line 3090  namespace { Line 3320  namespace {
3320      };      };
3321    
3322      File::File() : DLS::File() {      File::File() : DLS::File() {
3323            bAutoLoad = true;
3324          *pVersion = VERSION_3;          *pVersion = VERSION_3;
3325          pGroups = NULL;          pGroups = NULL;
3326          pInfo->FixedStringLengths = FixedStringLengths;          pInfo->SetFixedStringLengths(_FileFixedStringLengths);
3327          pInfo->ArchivalLocation = String(256, ' ');          pInfo->ArchivalLocation = String(256, ' ');
3328    
3329          // add some mandatory chunks to get the file chunks in right          // add some mandatory chunks to get the file chunks in right
# Line 3105  namespace { Line 3336  namespace {
3336      }      }
3337    
3338      File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) {      File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) {
3339            bAutoLoad = true;
3340          pGroups = NULL;          pGroups = NULL;
3341          pInfo->FixedStringLengths = FixedStringLengths;          pInfo->SetFixedStringLengths(_FileFixedStringLengths);
3342      }      }
3343    
3344      File::~File() {      File::~File() {
# Line 3174  namespace { Line 3406  namespace {
3406          pSamples->erase(iter);          pSamples->erase(iter);
3407          delete pSample;          delete pSample;
3408    
3409            SampleList::iterator tmp = SamplesIterator;
3410          // remove all references to the sample          // remove all references to the sample
3411          for (Instrument* instrument = GetFirstInstrument() ; instrument ;          for (Instrument* instrument = GetFirstInstrument() ; instrument ;
3412               instrument = GetNextInstrument()) {               instrument = GetNextInstrument()) {
# Line 3188  namespace { Line 3421  namespace {
3421                  }                  }
3422              }              }
3423          }          }
3424            SamplesIterator = tmp; // restore iterator
3425      }      }
3426    
3427      void File::LoadSamples() {      void File::LoadSamples() {
# Line 3278  namespace { Line 3512  namespace {
3512              progress_t subprogress;              progress_t subprogress;
3513              __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
3514              __notify_progress(&subprogress, 0.0f);              __notify_progress(&subprogress, 0.0f);
3515              GetFirstSample(&subprogress); // now force all samples to be loaded              if (GetAutoLoad())
3516                    GetFirstSample(&subprogress); // now force all samples to be loaded
3517              __notify_progress(&subprogress, 1.0f);              __notify_progress(&subprogress, 1.0f);
3518    
3519              // instrument loading subtask              // instrument loading subtask
# Line 3685  namespace { Line 3920  namespace {
3920          }          }
3921      }      }
3922    
3923        /**
3924         * Enable / disable automatic loading. By default this properyt is
3925         * enabled and all informations are loaded automatically. However
3926         * loading all Regions, DimensionRegions and especially samples might
3927         * take a long time for large .gig files, and sometimes one might only
3928         * be interested in retrieving very superficial informations like the
3929         * amount of instruments and their names. In this case one might disable
3930         * automatic loading to avoid very slow response times.
3931         *
3932         * @e CAUTION: by disabling this property many pointers (i.e. sample
3933         * references) and informations will have invalid or even undefined
3934         * data! This feature is currently only intended for retrieving very
3935         * superficial informations in a very fast way. Don't use it to retrieve
3936         * details like synthesis informations or even to modify .gig files!
3937         */
3938        void File::SetAutoLoad(bool b) {
3939            bAutoLoad = b;
3940        }
3941    
3942        /**
3943         * Returns whether automatic loading is enabled.
3944         * @see SetAutoLoad()
3945         */
3946        bool File::GetAutoLoad() {
3947            return bAutoLoad;
3948        }
3949    
3950    
3951    
3952  // *************** Exception ***************  // *************** Exception ***************
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