/[svn]/libgig/trunk/src/gig.cpp
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revision 3623 by schoenebeck, Wed Oct 2 16:30:29 2019 UTC revision 3710 by schoenebeck, Fri Jan 10 13:32:34 2020 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) 2003-2019 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2020 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 3412  namespace { Line 3412  namespace {
3412          }          }
3413    
3414          File* pFile = (File*) GetParent()->GetParent();          File* pFile = (File*) GetParent()->GetParent();
3415          bool versiongt2 = pFile->pVersion && pFile->pVersion->major > 2;          const bool versiongt2 = pFile->pVersion && pFile->pVersion->major > 2;
3416          const int iMaxDimensions =  versiongt2 ? 8 : 5;          const int iMaxDimensions =  versiongt2 ? 8 : 5;
3417          const int iMaxDimensionRegions = versiongt2 ? 256 : 32;          const int iMaxDimensionRegions = versiongt2 ? 256 : 32;
3418    
# Line 3459  namespace { Line 3459  namespace {
3459              }              }
3460              store32(&pData[iWavePoolOffset + i * 4], iWaveIndex);              store32(&pData[iWavePoolOffset + i * 4], iWaveIndex);
3461          }          }
3462    
3463            // The following chunks are just added for compatibility with the
3464            // GigaStudio software, which would show a warning if these were
3465            // missing. However currently these chunks don't cover any useful
3466            // data. So if this gig file uses any of our own gig format
3467            // extensions which would cause this gig file to be unloadable
3468            // with GSt software anyway, then just skip these GSt compatibility
3469            // chunks here as well.
3470            if (versiongt2 && !UsesAnyGigFormatExtension()) {
3471                // add 3dnm list which always seems to be empty
3472                RIFF::List* _3dnm = pCkRegion->GetSubList(LIST_TYPE_3DNM);
3473                if (!_3dnm) _3dnm = pCkRegion->AddSubList(LIST_TYPE_3DNM);
3474    
3475                // add 3ddp chunk which always seems to have 16 bytes of 0xFF
3476                RIFF::Chunk* _3ddp = pCkRegion->GetSubChunk(CHUNK_ID_3DDP);
3477                if (!_3ddp) _3ddp =  pCkRegion->AddSubChunk(CHUNK_ID_3DDP, 16);
3478                uint8_t* pData = (uint8_t*) _3ddp->LoadChunkData();
3479                for (int i = 0; i < 16; i += 4) {
3480                    store32(&pData[i], 0xFFFFFFFF);
3481                }
3482    
3483                // move 3dnm and 3ddp to the end of the region list
3484                pCkRegion->MoveSubChunk(pCkRegion->GetSubList(LIST_TYPE_3DNM), (RIFF::Chunk*)NULL);
3485                pCkRegion->MoveSubChunk(pCkRegion->GetSubChunk(CHUNK_ID_3DDP), (RIFF::Chunk*)NULL);
3486            } else {
3487                // this is intended for the user switching from GSt >= 3 version
3488                // back to an older format version, delete GSt3 chunks ...
3489                RIFF::List* _3dnm = pCkRegion->GetSubList(LIST_TYPE_3DNM);
3490                if (_3dnm) pCkRegion->DeleteSubChunk(_3dnm);
3491    
3492                RIFF::Chunk* _3ddp = pCkRegion->GetSubChunk(CHUNK_ID_3DDP);
3493                if (_3ddp) pCkRegion->DeleteSubChunk(_3ddp);
3494            }
3495      }      }
3496    
3497      void Region::LoadDimensionRegions(RIFF::List* rgn) {      void Region::LoadDimensionRegions(RIFF::List* rgn) {
# Line 3997  namespace { Line 4030  namespace {
4030          // now tempRegion's dimensions and DimensionRegions basically reflect          // now tempRegion's dimensions and DimensionRegions basically reflect
4031          // what we wanted to get for this actual Region here, so we now just          // what we wanted to get for this actual Region here, so we now just
4032          // delete and recreate the dimension in question with the new amount          // delete and recreate the dimension in question with the new amount
4033          // zones and then copy back from tempRegion                // zones and then copy back from tempRegion. we're actually deleting and
4034          DeleteDimension(oldDef);          // recreating all dimensions here, to avoid altering the precise order
4035          AddDimension(&newDef);          // of the dimensions (which would not be an error per so, but it would
4036            // cause usability issues with instrument editors)
4037            {
4038                std::vector<dimension_def_t> oldDefs;
4039                for (int i = 0; i < Dimensions; ++i)
4040                    oldDefs.push_back(pDimensionDefinitions[i]); // copy, don't reference
4041                for (int i = Dimensions - 1; i >= 0; --i)
4042                    DeleteDimension(&pDimensionDefinitions[i]);
4043                for (int i = 0; i < oldDefs.size(); ++i) {
4044                    dimension_def_t& def = oldDefs[i];
4045                    AddDimension(
4046                        (def.dimension == newDef.dimension) ? &newDef : &def
4047                    );
4048                }
4049            }
4050          for (int iSrc = 0; iSrc < 256; ++iSrc) {          for (int iSrc = 0; iSrc < 256; ++iSrc) {
4051              DimensionRegion* srcDimRgn = tempRgn->pDimensionRegions[iSrc];              DimensionRegion* srcDimRgn = tempRgn->pDimensionRegions[iSrc];
4052              if (!srcDimRgn) continue;              if (!srcDimRgn) continue;
# Line 4323  namespace { Line 4370  namespace {
4370          Layers = orig->Layers;          Layers = orig->Layers;
4371      }      }
4372    
4373        /**
4374         * Returns @c true in case this Region object uses any gig format
4375         * extension, that is e.g. whether any DimensionRegion object currently
4376         * has any setting effective that would require our "LSDE" RIFF chunk to
4377         * be stored to the gig file.
4378         *
4379         * Right now this is a private method. It is considerable though this method
4380         * to become (in slightly modified form) a public API method in future, i.e.
4381         * to allow instrument editors to visualize and/or warn the user of any gig
4382         * format extension being used. See also comments on
4383         * DimensionRegion::UsesAnyGigFormatExtension() for details about such a
4384         * potential public API change in future.
4385         */
4386        bool Region::UsesAnyGigFormatExtension() const {
4387            for (int i = 0; i < 256; i++) {
4388                if (pDimensionRegions[i]) {
4389                    if (pDimensionRegions[i]->UsesAnyGigFormatExtension())
4390                        return true;
4391                }
4392            }
4393            return false;
4394        }
4395    
4396    
4397  // *************** MidiRule ***************  // *************** MidiRule ***************
4398  // *  // *
# Line 5493  namespace { Line 5563  namespace {
5563          UpdateRegionKeyTable();          UpdateRegionKeyTable();
5564      }      }
5565    
5566        /**
5567         * Returns @c true in case this Instrument object uses any gig format
5568         * extension, that is e.g. whether any DimensionRegion object currently
5569         * has any setting effective that would require our "LSDE" RIFF chunk to
5570         * be stored to the gig file.
5571         *
5572         * Right now this is a private method. It is considerable though this method
5573         * to become (in slightly modified form) a public API method in future, i.e.
5574         * to allow instrument editors to visualize and/or warn the user of any gig
5575         * format extension being used. See also comments on
5576         * DimensionRegion::UsesAnyGigFormatExtension() for details about such a
5577         * potential public API change in future.
5578         */
5579        bool Instrument::UsesAnyGigFormatExtension() const {
5580            if (!pRegions) return false;
5581            RegionList::const_iterator iter = pRegions->begin();
5582            RegionList::const_iterator end  = pRegions->end();
5583            for (; iter != end; ++iter) {
5584                gig::Region* rgn = static_cast<gig::Region*>(*iter);
5585                if (rgn->UsesAnyGigFormatExtension())
5586                    return true;
5587            }
5588            return false;
5589        }
5590    
5591    
5592  // *************** Group ***************  // *************** Group ***************
5593  // *  // *
# Line 6625  namespace { Line 6720  namespace {
6720              if (pVersion && pVersion->major > 2) {              if (pVersion && pVersion->major > 2) {
6721                  RIFF::Chunk* _3gnm = _3gnl->GetFirstSubChunk();                  RIFF::Chunk* _3gnm = _3gnl->GetFirstSubChunk();
6722                  for (int i = 0 ; i < 128 ; i++) {                  for (int i = 0 ; i < 128 ; i++) {
6723                      if (i >= pGroups->size()) ::SaveString(CHUNK_ID_3GNM, _3gnm, _3gnl, "", "", true, 64);                      // create 128 empty placeholder strings which will either
6724                        // be filled by Group::UpdateChunks below or left empty.
6725                        ::SaveString(CHUNK_ID_3GNM, _3gnm, _3gnl, "", "", true, 64);
6726                      if (_3gnm) _3gnm = _3gnl->GetNextSubChunk();                      if (_3gnm) _3gnm = _3gnl->GetNextSubChunk();
6727                  }                  }
6728              }              }
# Line 6821  namespace { Line 6918  namespace {
6918          return bAutoLoad;          return bAutoLoad;
6919      }      }
6920    
6921        /**
6922         * Returns @c true in case this gig File object uses any gig format
6923         * extension, that is e.g. whether any DimensionRegion object currently
6924         * has any setting effective that would require our "LSDE" RIFF chunk to
6925         * be stored to the gig file.
6926         *
6927         * Right now this is a private method. It is considerable though this method
6928         * to become (in slightly modified form) a public API method in future, i.e.
6929         * to allow instrument editors to visualize and/or warn the user of any gig
6930         * format extension being used. See also comments on
6931         * DimensionRegion::UsesAnyGigFormatExtension() for details about such a
6932         * potential public API change in future.
6933         */
6934        bool File::UsesAnyGigFormatExtension() const {
6935            if (!pInstruments) return false;
6936            InstrumentList::iterator iter = pInstruments->begin();
6937            InstrumentList::iterator end  = pInstruments->end();
6938            for (; iter != end; ++iter) {
6939                Instrument* pInstrument = static_cast<gig::Instrument*>(*iter);
6940                if (pInstrument->UsesAnyGigFormatExtension())
6941                    return true;
6942            }
6943            return false;
6944        }
6945    
6946    
6947  // *************** Exception ***************  // *************** Exception ***************
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