/[svn]/libgig/trunk/src/DLS.cpp
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revision 317 by schoenebeck, Sat Dec 4 14:13:49 2004 UTC revision 1358 by schoenebeck, Sun Sep 30 18:13:33 2007 UTC
# Line 1  Line 1 
1  /***************************************************************************  /***************************************************************************
2   *                                                                         *   *                                                                         *
3   *   libgig - C++ cross-platform Gigasampler format file loader library    *   *   libgig - C++ cross-platform Gigasampler format file access library    *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Christian Schoenebeck                     *   *   Copyright (C) 2003-2007 by Christian Schoenebeck                      *
6   *                               <cuse@users.sourceforge.net>              *   *                              <cuse@users.sourceforge.net>               *
7   *                                                                         *   *                                                                         *
8   *   This library is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 23  Line 23 
23    
24  #include "DLS.h"  #include "DLS.h"
25    
26    #include <time.h>
27    
28    #ifdef __APPLE__
29    #include <CoreFoundation/CFUUID.h>
30    #elif defined(HAVE_UUID_UUID_H)
31    #include <uuid/uuid.h>
32    #endif
33    
34    #include "helper.h"
35    
36    // macros to decode connection transforms
37    #define CONN_TRANSFORM_SRC(x)                   ((x >> 10) & 0x000F)
38    #define CONN_TRANSFORM_CTL(x)                   ((x >> 4) & 0x000F)
39    #define CONN_TRANSFORM_DST(x)                   (x & 0x000F)
40    #define CONN_TRANSFORM_BIPOLAR_SRC(x)   (x & 0x4000)
41    #define CONN_TRANSFORM_BIPOLAR_CTL(x)   (x & 0x0100)
42    #define CONN_TRANSFORM_INVERT_SRC(x)    (x & 0x8000)
43    #define CONN_TRANSFORM_INVERT_CTL(x)    (x & 0x0200)
44    
45    // macros to encode connection transforms
46    #define CONN_TRANSFORM_SRC_ENCODE(x)                    ((x & 0x000F) << 10)
47    #define CONN_TRANSFORM_CTL_ENCODE(x)                    ((x & 0x000F) << 4)
48    #define CONN_TRANSFORM_DST_ENCODE(x)                    (x & 0x000F)
49    #define CONN_TRANSFORM_BIPOLAR_SRC_ENCODE(x)    ((x) ? 0x4000 : 0)
50    #define CONN_TRANSFORM_BIPOLAR_CTL_ENCODE(x)    ((x) ? 0x0100 : 0)
51    #define CONN_TRANSFORM_INVERT_SRC_ENCODE(x)             ((x) ? 0x8000 : 0)
52    #define CONN_TRANSFORM_INVERT_CTL_ENCODE(x)             ((x) ? 0x0200 : 0)
53    
54    #define DRUM_TYPE_MASK                  0x80000000
55    
56    #define F_RGN_OPTION_SELFNONEXCLUSIVE   0x0001
57    
58    #define F_WAVELINK_PHASE_MASTER         0x0001
59    #define F_WAVELINK_MULTICHANNEL         0x0002
60    
61    #define F_WSMP_NO_TRUNCATION            0x0001
62    #define F_WSMP_NO_COMPRESSION           0x0002
63    
64    #define MIDI_BANK_COARSE(x)             ((x & 0x00007F00) >> 8)                 // CC0
65    #define MIDI_BANK_FINE(x)               (x & 0x0000007F)                        // CC32
66    #define MIDI_BANK_MERGE(coarse, fine)   ((((uint16_t) coarse) << 7) | fine)     // CC0 + CC32
67    #define MIDI_BANK_ENCODE(coarse, fine)  (((coarse & 0x0000007F) << 8) | (fine & 0x0000007F))
68    
69  namespace DLS {  namespace DLS {
70    
71  // *************** Connection  ***************  // *************** Connection  ***************
# Line 42  namespace DLS { Line 85  namespace DLS {
85          ControlBipolar       = CONN_TRANSFORM_BIPOLAR_CTL(Header->transform);          ControlBipolar       = CONN_TRANSFORM_BIPOLAR_CTL(Header->transform);
86      }      }
87    
88        Connection::conn_block_t Connection::ToConnBlock() {
89            conn_block_t c;
90            c.source = Source;
91            c.control = Control;
92            c.destination = Destination;
93            c.scale = Scale;
94            c.transform = CONN_TRANSFORM_SRC_ENCODE(SourceTransform) |
95                          CONN_TRANSFORM_CTL_ENCODE(ControlTransform) |
96                          CONN_TRANSFORM_DST_ENCODE(DestinationTransform) |
97                          CONN_TRANSFORM_INVERT_SRC_ENCODE(SourceInvert) |
98                          CONN_TRANSFORM_BIPOLAR_SRC_ENCODE(SourceBipolar) |
99                          CONN_TRANSFORM_INVERT_CTL_ENCODE(ControlInvert) |
100                          CONN_TRANSFORM_BIPOLAR_CTL_ENCODE(ControlBipolar);
101            return c;
102        }
103    
104    
105    
106  // *************** Articulation  ***************  // *************** Articulation  ***************
107  // *  // *
108    
109      Articulation::Articulation(RIFF::List* artList) {      /** @brief Constructor.
110          if (artList->GetListType() != LIST_TYPE_ART2 &&       *
111              artList->GetListType() != LIST_TYPE_ART1) {       * Expects an 'artl' or 'art2' chunk to be given where the articulation
112                throw DLS::Exception("<art1-list> or <art2-list> chunk expected");       * connections will be read from.
113          }       *
114          uint32_t headerSize = artList->ReadUint32();       * @param artl - pointer to an 'artl' or 'art2' chunk
115          Connections         = artList->ReadUint32();       * @throws Exception if no 'artl' or 'art2' chunk was given
116          artList->SetPos(headerSize);       */
117        Articulation::Articulation(RIFF::Chunk* artl) {
118            pArticulationCk = artl;
119            if (artl->GetChunkID() != CHUNK_ID_ART2 &&
120                artl->GetChunkID() != CHUNK_ID_ARTL) {
121                  throw DLS::Exception("<artl-ck> or <art2-ck> chunk expected");
122            }
123            HeaderSize  = artl->ReadUint32();
124            Connections = artl->ReadUint32();
125            artl->SetPos(HeaderSize);
126    
127          pConnections = new Connection[Connections];          pConnections = new Connection[Connections];
128          Connection::conn_block_t connblock;          Connection::conn_block_t connblock;
129          for (uint32_t i = 0; i <= Connections; i++) {          for (uint32_t i = 0; i < Connections; i++) {
130              artList->Read(&connblock.source, 1, 2);              artl->Read(&connblock.source, 1, 2);
131              artList->Read(&connblock.control, 1, 2);              artl->Read(&connblock.control, 1, 2);
132              artList->Read(&connblock.destination, 1, 2);              artl->Read(&connblock.destination, 1, 2);
133              artList->Read(&connblock.transform, 1, 2);              artl->Read(&connblock.transform, 1, 2);
134              artList->Read(&connblock.scale, 1, 4);              artl->Read(&connblock.scale, 1, 4);
135              pConnections[i].Init(&connblock);              pConnections[i].Init(&connblock);
136          }          }
137      }      }
# Line 72  namespace DLS { Line 140  namespace DLS {
140         if (pConnections) delete[] pConnections;         if (pConnections) delete[] pConnections;
141      }      }
142    
143        /**
144         * Apply articulation connections to the respective RIFF chunks. You
145         * have to call File::Save() to make changes persistent.
146         */
147        void Articulation::UpdateChunks() {
148            const int iEntrySize = 12; // 12 bytes per connection block
149            pArticulationCk->Resize(HeaderSize + Connections * iEntrySize);
150            uint8_t* pData = (uint8_t*) pArticulationCk->LoadChunkData();
151            store16(&pData[0], HeaderSize);
152            store16(&pData[2], Connections);
153            for (uint32_t i = 0; i < Connections; i++) {
154                Connection::conn_block_t c = pConnections[i].ToConnBlock();
155                store16(&pData[HeaderSize + i * iEntrySize],     c.source);
156                store16(&pData[HeaderSize + i * iEntrySize + 2], c.control);
157                store16(&pData[HeaderSize + i * iEntrySize + 4], c.destination);
158                store16(&pData[HeaderSize + i * iEntrySize + 6], c.transform);
159                store32(&pData[HeaderSize + i * iEntrySize + 8], c.scale);
160            }
161        }
162    
163    
164    
165  // *************** Articulator  ***************  // *************** Articulator  ***************
# Line 100  namespace DLS { Line 188  namespace DLS {
188          RIFF::List* lart = pParentList->GetSubList(LIST_TYPE_LAR2);          RIFF::List* lart = pParentList->GetSubList(LIST_TYPE_LAR2);
189          if (!lart)  lart = pParentList->GetSubList(LIST_TYPE_LART);          if (!lart)  lart = pParentList->GetSubList(LIST_TYPE_LART);
190          if (lart) {          if (lart) {
191              uint32_t artCkType = (lart->GetListType() == LIST_TYPE_LAR2) ? LIST_TYPE_ART2              uint32_t artCkType = (lart->GetListType() == LIST_TYPE_LAR2) ? CHUNK_ID_ART2
192                                                                           : LIST_TYPE_ART1;                                                                           : CHUNK_ID_ARTL;
193              RIFF::List* art = lart->GetFirstSubList();              RIFF::Chunk* art = lart->GetFirstSubChunk();
194              while (art) {              while (art) {
195                  if (art->GetListType() == artCkType) {                  if (art->GetChunkID() == artCkType) {
196                      if (!pArticulations) pArticulations = new ArticulationList;                      if (!pArticulations) pArticulations = new ArticulationList;
197                      pArticulations->push_back(new Articulation(art));                      pArticulations->push_back(new Articulation(art));
198                  }                  }
199                  art = lart->GetNextSubList();                  art = lart->GetNextSubChunk();
200              }              }
201          }          }
202      }      }
# Line 125  namespace DLS { Line 213  namespace DLS {
213          }          }
214      }      }
215    
216        /**
217         * Apply all articulations to the respective RIFF chunks. You have to
218         * call File::Save() to make changes persistent.
219         */
220        void Articulator::UpdateChunks() {
221            if (pArticulations) {
222                ArticulationList::iterator iter = pArticulations->begin();
223                ArticulationList::iterator end  = pArticulations->end();
224                for (; iter != end; ++iter) {
225                    (*iter)->UpdateChunks();
226                }
227            }
228        }
229    
230    
231    
232  // *************** Info  ***************  // *************** Info  ***************
233  // *  // *
234    
235        /** @brief Constructor.
236         *
237         * Initializes the info strings with values provided by an INFO list chunk.
238         *
239         * @param list - pointer to a list chunk which contains an INFO list chunk
240         */
241      Info::Info(RIFF::List* list) {      Info::Info(RIFF::List* list) {
242            FixedStringLengths = NULL;
243            pResourceListChunk = list;
244          if (list) {          if (list) {
245              RIFF::List* lstINFO = list->GetSubList(LIST_TYPE_INFO);              RIFF::List* lstINFO = list->GetSubList(LIST_TYPE_INFO);
246              if (lstINFO) {              if (lstINFO) {
# Line 150  namespace DLS { Line 260  namespace DLS {
260                  LoadString(CHUNK_ID_ISRC, lstINFO, Source);                  LoadString(CHUNK_ID_ISRC, lstINFO, Source);
261                  LoadString(CHUNK_ID_ISRF, lstINFO, SourceForm);                  LoadString(CHUNK_ID_ISRF, lstINFO, SourceForm);
262                  LoadString(CHUNK_ID_ICMS, lstINFO, Commissioned);                  LoadString(CHUNK_ID_ICMS, lstINFO, Commissioned);
263                    LoadString(CHUNK_ID_ISBJ, lstINFO, Subject);
264              }              }
265          }          }
266      }      }
267    
268        Info::~Info() {
269        }
270    
271        /** @brief Load given INFO field.
272         *
273         * Load INFO field from INFO chunk with chunk ID \a ChunkID from INFO
274         * list chunk \a lstINFO and save value to \a s.
275         */
276        void Info::LoadString(uint32_t ChunkID, RIFF::List* lstINFO, String& s) {
277            RIFF::Chunk* ck = lstINFO->GetSubChunk(ChunkID);
278            ::LoadString(ck, s); // function from helper.h
279        }
280    
281        /** @brief Apply given INFO field to the respective chunk.
282         *
283         * Apply given info value to info chunk with ID \a ChunkID, which is a
284         * subchunk of INFO list chunk \a lstINFO. If the given chunk already
285         * exists, value \a s will be applied. Otherwise if it doesn't exist yet
286         * and either \a s or \a sDefault is not an empty string, such a chunk
287         * will be created and either \a s or \a sDefault will be applied
288         * (depending on which one is not an empty string, if both are not an
289         * empty string \a s will be preferred).
290         *
291         * @param ChunkID  - 32 bit RIFF chunk ID of INFO subchunk
292         * @param lstINFO  - parent (INFO) RIFF list chunk
293         * @param s        - current value of info field
294         * @param sDefault - default value
295         */
296        void Info::SaveString(uint32_t ChunkID, RIFF::List* lstINFO, const String& s, const String& sDefault) {
297            int size = 0;
298            if (FixedStringLengths) {
299                for (int i = 0 ; FixedStringLengths[i].length ; i++) {
300                    if (FixedStringLengths[i].chunkId == ChunkID) {
301                        size = FixedStringLengths[i].length;
302                        break;
303                    }
304                }
305            }
306            RIFF::Chunk* ck = lstINFO->GetSubChunk(ChunkID);
307            ::SaveString(ChunkID, ck, lstINFO, s, sDefault, size != 0, size); // function from helper.h
308        }
309    
310        /** @brief Update chunks with current info values.
311         *
312         * Apply current INFO field values to the respective INFO chunks. You
313         * have to call File::Save() to make changes persistent.
314         */
315        void Info::UpdateChunks() {
316            if (!pResourceListChunk) return;
317    
318            // make sure INFO list chunk exists
319            RIFF::List* lstINFO   = pResourceListChunk->GetSubList(LIST_TYPE_INFO);
320    
321            String defaultName = "";
322            String defaultCreationDate = "";
323            String defaultSoftware = "";
324            String defaultComments = "";
325    
326            uint32_t resourceType = pResourceListChunk->GetListType();
327    
328            if (!lstINFO) {
329                lstINFO = pResourceListChunk->AddSubList(LIST_TYPE_INFO);
330    
331                // assemble default values
332                defaultName = "NONAME";
333    
334                if (resourceType == RIFF_TYPE_DLS) {
335                    // get current date
336                    time_t now = time(NULL);
337                    tm* pNowBroken = localtime(&now);
338                    char buf[11];
339                    strftime(buf, 11, "%F", pNowBroken);
340                    defaultCreationDate = buf;
341    
342                    defaultComments = "Created with " + libraryName() + " " + libraryVersion();
343                }
344                if (resourceType == RIFF_TYPE_DLS || resourceType == LIST_TYPE_INS)
345                {
346                    defaultSoftware = libraryName() + " " + libraryVersion();
347                }
348            }
349    
350            // save values
351    
352            SaveString(CHUNK_ID_IARL, lstINFO, ArchivalLocation, String(""));
353            SaveString(CHUNK_ID_IART, lstINFO, Artists, String(""));
354            SaveString(CHUNK_ID_ICMS, lstINFO, Commissioned, String(""));
355            SaveString(CHUNK_ID_ICMT, lstINFO, Comments, defaultComments);
356            SaveString(CHUNK_ID_ICOP, lstINFO, Copyright, String(""));
357            SaveString(CHUNK_ID_ICRD, lstINFO, CreationDate, defaultCreationDate);
358            SaveString(CHUNK_ID_IENG, lstINFO, Engineer, String(""));
359            SaveString(CHUNK_ID_IGNR, lstINFO, Genre, String(""));
360            SaveString(CHUNK_ID_IKEY, lstINFO, Keywords, String(""));
361            SaveString(CHUNK_ID_IMED, lstINFO, Medium, String(""));
362            SaveString(CHUNK_ID_INAM, lstINFO, Name, defaultName);
363            SaveString(CHUNK_ID_IPRD, lstINFO, Product, String(""));
364            SaveString(CHUNK_ID_ISBJ, lstINFO, Subject, String(""));
365            SaveString(CHUNK_ID_ISFT, lstINFO, Software, defaultSoftware);
366            SaveString(CHUNK_ID_ISRC, lstINFO, Source, String(""));
367            SaveString(CHUNK_ID_ISRF, lstINFO, SourceForm, String(""));
368            SaveString(CHUNK_ID_ITCH, lstINFO, Technician, String(""));
369        }
370    
371    
372    
373  // *************** Resource ***************  // *************** Resource ***************
374  // *  // *
375    
376        /** @brief Constructor.
377         *
378         * Initializes the 'Resource' object with values provided by a given
379         * INFO list chunk and a DLID chunk (the latter optional).
380         *
381         * @param Parent      - pointer to parent 'Resource', NULL if this is
382         *                      the toplevel 'Resource' object
383         * @param lstResource - pointer to an INFO list chunk
384         */
385      Resource::Resource(Resource* Parent, RIFF::List* lstResource) {      Resource::Resource(Resource* Parent, RIFF::List* lstResource) {
386          pParent = Parent;          pParent = Parent;
387            pResourceList = lstResource;
388    
389          pInfo = new Info(lstResource);          pInfo = new Info(lstResource);
390    
# Line 180  namespace DLS { Line 404  namespace DLS {
404          if (pInfo)  delete pInfo;          if (pInfo)  delete pInfo;
405      }      }
406    
407        /** @brief Update chunks with current Resource data.
408         *
409         * Apply Resource data persistently below the previously given resource
410         * list chunk. This will currently only include the INFO data. The DLSID
411         * will not be applied at the moment (yet).
412         *
413         * You have to call File::Save() to make changes persistent.
414         */
415        void Resource::UpdateChunks() {
416            pInfo->UpdateChunks();
417    
418            if (pDLSID) {
419                // make sure 'dlid' chunk exists
420                RIFF::Chunk* ckDLSID = pResourceList->GetSubChunk(CHUNK_ID_DLID);
421                if (!ckDLSID) ckDLSID = pResourceList->AddSubChunk(CHUNK_ID_DLID, 16);
422                uint8_t* pData = (uint8_t*)ckDLSID->LoadChunkData();
423                // update 'dlid' chunk
424                store32(&pData[0], pDLSID->ulData1);
425                store16(&pData[4], pDLSID->usData2);
426                store16(&pData[6], pDLSID->usData3);
427                memcpy(&pData[8], pDLSID->abData, 8);
428            }
429        }
430    
431        /**
432         * Generates a new DLSID for the resource.
433         */
434        void Resource::GenerateDLSID() {
435    #if defined(WIN32) || defined(__APPLE__) || defined(HAVE_UUID_GENERATE)
436    
437            if (!pDLSID) pDLSID = new dlsid_t;
438    
439    #ifdef WIN32
440    
441            UUID uuid;
442            UuidCreate(&uuid);
443            pDLSID->ulData1 = uuid.Data1;
444            pDLSID->usData2 = uuid.Data2;
445            pDLSID->usData3 = uuid.Data3;
446            memcpy(pDLSID->abData, uuid.Data4, 8);
447    
448    #elif defined(__APPLE__)
449    
450            CFUUIDRef uuidRef = CFUUIDCreate(NULL);
451            CFUUIDBytes uuid = CFUUIDGetUUIDBytes(uuidRef);
452            CFRelease(uuidRef);
453            pDLSID->ulData1 = uuid.byte0 | uuid.byte1 << 8 | uuid.byte2 << 16 | uuid.byte3 << 24;
454            pDLSID->usData2 = uuid.byte4 | uuid.byte5 << 8;
455            pDLSID->usData3 = uuid.byte6 | uuid.byte7 << 8;
456            pDLSID->abData[0] = uuid.byte8;
457            pDLSID->abData[1] = uuid.byte9;
458            pDLSID->abData[2] = uuid.byte10;
459            pDLSID->abData[3] = uuid.byte11;
460            pDLSID->abData[4] = uuid.byte12;
461            pDLSID->abData[5] = uuid.byte13;
462            pDLSID->abData[6] = uuid.byte14;
463            pDLSID->abData[7] = uuid.byte15;
464    #else
465            uuid_t uuid;
466            uuid_generate(uuid);
467            pDLSID->ulData1 = uuid[0] | uuid[1] << 8 | uuid[2] << 16 | uuid[3] << 24;
468            pDLSID->usData2 = uuid[4] | uuid[5] << 8;
469            pDLSID->usData3 = uuid[6] | uuid[7] << 8;
470            memcpy(pDLSID->abData, &uuid[8], 8);
471    #endif
472    #endif
473        }
474    
475    
476  // *************** Sampler ***************  // *************** Sampler ***************
477  // *  // *
478    
479      Sampler::Sampler(RIFF::List* ParentList) {      Sampler::Sampler(RIFF::List* ParentList) {
480            pParentList       = ParentList;
481          RIFF::Chunk* wsmp = ParentList->GetSubChunk(CHUNK_ID_WSMP);          RIFF::Chunk* wsmp = ParentList->GetSubChunk(CHUNK_ID_WSMP);
482          if (!wsmp) throw DLS::Exception("Mandatory <wsmp> chunk not found.");          if (wsmp) {
483          uint32_t headersize = wsmp->ReadUint32();              uiHeaderSize   = wsmp->ReadUint32();
484          UnityNote        = wsmp->ReadUint16();              UnityNote      = wsmp->ReadUint16();
485          FineTune         = wsmp->ReadInt16();              FineTune       = wsmp->ReadInt16();
486          Gain             = wsmp->ReadInt32();              Gain           = wsmp->ReadInt32();
487          SamplerOptions   = wsmp->ReadUint32();              SamplerOptions = wsmp->ReadUint32();
488                SampleLoops    = wsmp->ReadUint32();
489            } else { // 'wsmp' chunk missing
490                uiHeaderSize   = 0;
491                UnityNote      = 60;
492                FineTune       = 0; // +- 0 cents
493                Gain           = 0; // 0 dB
494                SamplerOptions = F_WSMP_NO_COMPRESSION;
495                SampleLoops    = 0;
496            }
497          NoSampleDepthTruncation = SamplerOptions & F_WSMP_NO_TRUNCATION;          NoSampleDepthTruncation = SamplerOptions & F_WSMP_NO_TRUNCATION;
498          NoSampleCompression     = SamplerOptions & F_WSMP_NO_COMPRESSION;          NoSampleCompression     = SamplerOptions & F_WSMP_NO_COMPRESSION;
         SampleLoops             = wsmp->ReadUint32();  
499          pSampleLoops            = (SampleLoops) ? new sample_loop_t[SampleLoops] : NULL;          pSampleLoops            = (SampleLoops) ? new sample_loop_t[SampleLoops] : NULL;
500          wsmp->SetPos(headersize);          if (SampleLoops) {
501          for (uint32_t i = 0; i < SampleLoops; i++) {              wsmp->SetPos(uiHeaderSize);
502              wsmp->Read(pSampleLoops + i, 4, 4);              for (uint32_t i = 0; i < SampleLoops; i++) {
503              if (pSampleLoops[i].Size > sizeof(sample_loop_t)) { // if loop struct was extended                  wsmp->Read(pSampleLoops + i, 4, 4);
504                  wsmp->SetPos(pSampleLoops[i].Size - sizeof(sample_loop_t), RIFF::stream_curpos);                  if (pSampleLoops[i].Size > sizeof(sample_loop_t)) { // if loop struct was extended
505                        wsmp->SetPos(pSampleLoops[i].Size - sizeof(sample_loop_t), RIFF::stream_curpos);
506                    }
507              }              }
508          }          }
509      }      }
# Line 210  namespace DLS { Line 512  namespace DLS {
512          if (pSampleLoops) delete[] pSampleLoops;          if (pSampleLoops) delete[] pSampleLoops;
513      }      }
514    
515        void Sampler::SetGain(int32_t gain) {
516            Gain = gain;
517        }
518    
519        /**
520         * Apply all sample player options to the respective RIFF chunk. You
521         * have to call File::Save() to make changes persistent.
522         */
523        void Sampler::UpdateChunks() {
524            // make sure 'wsmp' chunk exists
525            RIFF::Chunk* wsmp = pParentList->GetSubChunk(CHUNK_ID_WSMP);
526            if (!wsmp) {
527                uiHeaderSize = 20;
528                wsmp = pParentList->AddSubChunk(CHUNK_ID_WSMP, uiHeaderSize + SampleLoops * 16);
529            }
530            uint8_t* pData = (uint8_t*) wsmp->LoadChunkData();
531            // update headers size
532            store32(&pData[0], uiHeaderSize);
533            // update respective sampler options bits
534            SamplerOptions = (NoSampleDepthTruncation) ? SamplerOptions | F_WSMP_NO_TRUNCATION
535                                                       : SamplerOptions & (~F_WSMP_NO_TRUNCATION);
536            SamplerOptions = (NoSampleCompression) ? SamplerOptions | F_WSMP_NO_COMPRESSION
537                                                   : SamplerOptions & (~F_WSMP_NO_COMPRESSION);
538            store16(&pData[4], UnityNote);
539            store16(&pData[6], FineTune);
540            store32(&pData[8], Gain);
541            store32(&pData[12], SamplerOptions);
542            store32(&pData[16], SampleLoops);
543            // update loop definitions
544            for (uint32_t i = 0; i < SampleLoops; i++) {
545                //FIXME: this does not handle extended loop structs correctly
546                store32(&pData[uiHeaderSize + i * 16], pSampleLoops[i].Size);
547                store32(&pData[uiHeaderSize + i * 16 + 4], pSampleLoops[i].LoopType);
548                store32(&pData[uiHeaderSize + i * 16 + 8], pSampleLoops[i].LoopStart);
549                store32(&pData[uiHeaderSize + i * 16 + 12], pSampleLoops[i].LoopLength);
550            }
551        }
552    
553        /**
554         * Adds a new sample loop with the provided loop definition.
555         *
556         * @param pLoopDef - points to a loop definition that is to be copied
557         */
558        void Sampler::AddSampleLoop(sample_loop_t* pLoopDef) {
559            sample_loop_t* pNewLoops = new sample_loop_t[SampleLoops + 1];
560            // copy old loops array
561            for (int i = 0; i < SampleLoops; i++) {
562                pNewLoops[i] = pSampleLoops[i];
563            }
564            // add the new loop
565            pNewLoops[SampleLoops] = *pLoopDef;
566            // auto correct size field
567            pNewLoops[SampleLoops].Size = sizeof(DLS::sample_loop_t);
568            // free the old array and update the member variables
569            if (SampleLoops) delete[] pSampleLoops;
570            pSampleLoops = pNewLoops;
571            SampleLoops++;
572        }
573    
574        /**
575         * Deletes an existing sample loop.
576         *
577         * @param pLoopDef - pointer to existing loop definition
578         * @throws Exception - if given loop definition does not exist
579         */
580        void Sampler::DeleteSampleLoop(sample_loop_t* pLoopDef) {
581            sample_loop_t* pNewLoops = new sample_loop_t[SampleLoops - 1];
582            // copy old loops array (skipping given loop)
583            for (int i = 0, o = 0; i < SampleLoops; i++) {
584                if (&pSampleLoops[i] == pLoopDef) continue;
585                if (o == SampleLoops - 1)
586                    throw Exception("Could not delete Sample Loop, because it does not exist");
587                pNewLoops[o] = pSampleLoops[i];
588                o++;
589            }
590            // free the old array and update the member variables
591            if (SampleLoops) delete[] pSampleLoops;
592            pSampleLoops = pNewLoops;
593            SampleLoops--;
594        }
595    
596    
597    
598  // *************** Sample ***************  // *************** Sample ***************
599  // *  // *
600    
601        /** @brief Constructor.
602         *
603         * Load an existing sample or create a new one. A 'wave' list chunk must
604         * be given to this constructor. In case the given 'wave' list chunk
605         * contains a 'fmt' and 'data' chunk, the format and sample data will be
606         * loaded from there, otherwise default values will be used and those
607         * chunks will be created when File::Save() will be called later on.
608         *
609         * @param pFile          - pointer to DLS::File where this sample is
610         *                         located (or will be located)
611         * @param waveList       - pointer to 'wave' list chunk which is (or
612         *                         will be) associated with this sample
613         * @param WavePoolOffset - offset of this sample data from wave pool
614         *                         ('wvpl') list chunk
615         */
616      Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset) : Resource(pFile, waveList) {      Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset) : Resource(pFile, waveList) {
617            pWaveList = waveList;
618          ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE;          ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE;
619          pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT);          pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT);
620          pCkData   = waveList->GetSubChunk(CHUNK_ID_DATA);          pCkData   = waveList->GetSubChunk(CHUNK_ID_DATA);
621          if (!pCkFormat || !pCkData) throw DLS::Exception("Mandatory chunks in wave list not found.");          if (pCkFormat) {
622                // common fields
623          // common fields              FormatTag              = pCkFormat->ReadUint16();
624          FormatTag              = pCkFormat->ReadUint16();              Channels               = pCkFormat->ReadUint16();
625          Channels               = pCkFormat->ReadUint16();              SamplesPerSecond       = pCkFormat->ReadUint32();
626          SamplesPerSecond       = pCkFormat->ReadUint32();              AverageBytesPerSecond  = pCkFormat->ReadUint32();
627          AverageBytesPerSecond  = pCkFormat->ReadUint32();              BlockAlign             = pCkFormat->ReadUint16();
628          BlockAlign             = pCkFormat->ReadUint16();              // PCM format specific
629                if (FormatTag == DLS_WAVE_FORMAT_PCM) {
630          // PCM format specific                  BitDepth     = pCkFormat->ReadUint16();
631          if (FormatTag == WAVE_FORMAT_PCM) {                  FrameSize    = (BitDepth / 8) * Channels;
632              BitDepth     = pCkFormat->ReadUint16();              } else { // unsupported sample data format
633              FrameSize    = (FormatTag == WAVE_FORMAT_PCM) ? (BitDepth / 8) * Channels                  BitDepth     = 0;
634                                                            : 0;                  FrameSize    = 0;
635              SamplesTotal = (FormatTag == WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize              }
636                                                            : 0;          } else { // 'fmt' chunk missing
637          }              FormatTag              = DLS_WAVE_FORMAT_PCM;
638          else {              BitDepth               = 16;
639              BitDepth     = 0;              Channels               = 1;
640              FrameSize    = 0;              SamplesPerSecond       = 44100;
641              SamplesTotal = 0;              AverageBytesPerSecond  = (BitDepth / 8) * SamplesPerSecond * Channels;
642                FrameSize              = (BitDepth / 8) * Channels;
643                BlockAlign             = FrameSize;
644          }          }
645            SamplesTotal = (pCkData) ? (FormatTag == DLS_WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize
646                                                                          : 0
647                                     : 0;
648        }
649    
650        /** @brief Destructor.
651         *
652         * Removes RIFF chunks associated with this Sample and frees all
653         * memory occupied by this sample.
654         */
655        Sample::~Sample() {
656            RIFF::List* pParent = pWaveList->GetParent();
657            pParent->DeleteSubChunk(pWaveList);
658      }      }
659    
660        /** @brief Load sample data into RAM.
661         *
662         * In case the respective 'data' chunk exists, the sample data will be
663         * loaded into RAM (if not done already) and a pointer to the data in
664         * RAM will be returned. If this is a new sample, you have to call
665         * Resize() with the desired sample size to create the mandatory RIFF
666         * chunk for the sample wave data.
667         *
668         * You can call LoadChunkData() again if you previously scheduled to
669         * enlarge the sample data RIFF chunk with a Resize() call. In that case
670         * the buffer will be enlarged to the new, scheduled size and you can
671         * already place the sample wave data to the buffer and finally call
672         * File::Save() to enlarge the sample data's chunk physically and write
673         * the new sample wave data in one rush. This approach is definitely
674         * recommended if you have to enlarge and write new sample data to a lot
675         * of samples.
676         *
677         * <b>Caution:</b> the buffer pointer will be invalidated once
678         * File::Save() was called. You have to call LoadChunkData() again to
679         * get a new, valid pointer whenever File::Save() was called.
680         *
681         * @returns pointer to sample data in RAM, NULL in case respective
682         *          'data' chunk does not exist (yet)
683         * @throws Exception if data buffer could not be enlarged
684         * @see Resize(), File::Save()
685         */
686      void* Sample::LoadSampleData() {      void* Sample::LoadSampleData() {
687          return pCkData->LoadChunkData();          return (pCkData) ? pCkData->LoadChunkData() : NULL;
688      }      }
689    
690        /** @brief Free sample data from RAM.
691         *
692         * In case sample data was previously successfully loaded into RAM with
693         * LoadSampleData(), this method will free the sample data from RAM.
694         */
695      void Sample::ReleaseSampleData() {      void Sample::ReleaseSampleData() {
696          pCkData->ReleaseChunkData();          if (pCkData) pCkData->ReleaseChunkData();
697        }
698    
699        /** @brief Returns sample size.
700         *
701         * Returns the sample wave form's data size (in sample points). This is
702         * actually the current, physical size (converted to sample points) of
703         * the RIFF chunk which encapsulates the sample's wave data. The
704         * returned value is dependant to the current FrameSize value.
705         *
706         * @returns number of sample points or 0 if FormatTag != DLS_WAVE_FORMAT_PCM
707         * @see FrameSize, FormatTag
708         */
709        unsigned long Sample::GetSize() {
710            if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0;
711            return (pCkData) ? pCkData->GetSize() / FrameSize : 0;
712        }
713    
714        /** @brief Resize sample.
715         *
716         * Resizes the sample's wave form data, that is the actual size of
717         * sample wave data possible to be written for this sample. This call
718         * will return immediately and just schedule the resize operation. You
719         * should call File::Save() to actually perform the resize operation(s)
720         * "physically" to the file. As this can take a while on large files, it
721         * is recommended to call Resize() first on all samples which have to be
722         * resized and finally to call File::Save() to perform all those resize
723         * operations in one rush.
724         *
725         * The actual size (in bytes) is dependant to the current FrameSize
726         * value. You may want to set FrameSize before calling Resize().
727         *
728         * <b>Caution:</b> You cannot directly write to enlarged samples before
729         * calling File::Save() as this might exceed the current sample's
730         * boundary!
731         *
732         * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is
733         * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with
734         * other formats will fail!
735         *
736         * @param iNewSize - new sample wave data size in sample points (must be
737         *                   greater than zero)
738         * @throws Excecption if FormatTag != DLS_WAVE_FORMAT_PCM
739         * @throws Exception if \a iNewSize is less than 1
740         * @see File::Save(), FrameSize, FormatTag
741         */
742        void Sample::Resize(int iNewSize) {
743            if (FormatTag != DLS_WAVE_FORMAT_PCM) throw Exception("Sample's format is not DLS_WAVE_FORMAT_PCM");
744            if (iNewSize < 1) throw Exception("Sample size must be at least one sample point");
745            const int iSizeInBytes = iNewSize * FrameSize;
746            pCkData = pWaveList->GetSubChunk(CHUNK_ID_DATA);
747            if (pCkData) pCkData->Resize(iSizeInBytes);
748            else pCkData = pWaveList->AddSubChunk(CHUNK_ID_DATA, iSizeInBytes);
749      }      }
750    
751      /**      /**
# Line 256  namespace DLS { Line 753  namespace DLS {
753       * bytes). Use this method and <i>Read()</i> if you don't want to load       * bytes). Use this method and <i>Read()</i> if you don't want to load
754       * the sample into RAM, thus for disk streaming.       * the sample into RAM, thus for disk streaming.
755       *       *
756         * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is
757         * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to reposition the sample
758         * with other formats will fail!
759         *
760       * @param SampleCount  number of sample points       * @param SampleCount  number of sample points
761       * @param Whence       to which relation \a SampleCount refers to       * @param Whence       to which relation \a SampleCount refers to
762         * @returns new position within the sample, 0 if
763         *          FormatTag != DLS_WAVE_FORMAT_PCM
764         * @throws Exception if no data RIFF chunk was created for the sample yet
765         * @see FrameSize, FormatTag
766       */       */
767      unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) {      unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) {
768          if (FormatTag != WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format          if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
769            if (!pCkData) throw Exception("No data chunk created for sample yet, call Sample::Resize() to create one");
770          unsigned long orderedBytes = SampleCount * FrameSize;          unsigned long orderedBytes = SampleCount * FrameSize;
771          unsigned long result = pCkData->SetPos(orderedBytes, Whence);          unsigned long result = pCkData->SetPos(orderedBytes, Whence);
772          return (result == orderedBytes) ? SampleCount          return (result == orderedBytes) ? SampleCount
# Line 277  namespace DLS { Line 783  namespace DLS {
783       * @param SampleCount  number of sample points to read       * @param SampleCount  number of sample points to read
784       */       */
785      unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) {      unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) {
786          if (FormatTag != WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format          if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
787          return pCkData->Read(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction?          return pCkData->Read(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction?
788      }      }
789    
790        /** @brief Write sample wave data.
791         *
792         * Writes \a SampleCount number of sample points from the buffer pointed
793         * by \a pBuffer and increments the position within the sample. Use this
794         * method to directly write the sample data to disk, i.e. if you don't
795         * want or cannot load the whole sample data into RAM.
796         *
797         * You have to Resize() the sample to the desired size and call
798         * File::Save() <b>before</b> using Write().
799         *
800         * @param pBuffer     - source buffer
801         * @param SampleCount - number of sample points to write
802         * @throws Exception if current sample size is too small
803         * @see LoadSampleData()
804         */
805        unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) {
806            if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
807            if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");
808            return pCkData->Write(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction?
809        }
810    
811        /**
812         * Apply sample and its settings to the respective RIFF chunks. You have
813         * to call File::Save() to make changes persistent.
814         *
815         * @throws Exception if FormatTag != DLS_WAVE_FORMAT_PCM or no sample data
816         *                   was provided yet
817         */
818        void Sample::UpdateChunks() {
819            if (FormatTag != DLS_WAVE_FORMAT_PCM)
820                throw Exception("Could not save sample, only PCM format is supported");
821            // we refuse to do anything if not sample wave form was provided yet
822            if (!pCkData)
823                throw Exception("Could not save sample, there is no sample data to save");
824            // update chunks of base class as well
825            Resource::UpdateChunks();
826            // make sure 'fmt' chunk exists
827            RIFF::Chunk* pCkFormat = pWaveList->GetSubChunk(CHUNK_ID_FMT);
828            if (!pCkFormat) pCkFormat = pWaveList->AddSubChunk(CHUNK_ID_FMT, 16); // assumes PCM format
829            uint8_t* pData = (uint8_t*) pCkFormat->LoadChunkData();
830            // update 'fmt' chunk
831            store16(&pData[0], FormatTag);
832            store16(&pData[2], Channels);
833            store32(&pData[4], SamplesPerSecond);
834            store32(&pData[8], AverageBytesPerSecond);
835            store16(&pData[12], BlockAlign);
836            store16(&pData[14], BitDepth); // assuming PCM format
837        }
838    
839    
840    
841  // *************** Region ***************  // *************** Region ***************
# Line 289  namespace DLS { Line 844  namespace DLS {
844      Region::Region(Instrument* pInstrument, RIFF::List* rgnList) : Resource(pInstrument, rgnList), Articulator(rgnList), Sampler(rgnList) {      Region::Region(Instrument* pInstrument, RIFF::List* rgnList) : Resource(pInstrument, rgnList), Articulator(rgnList), Sampler(rgnList) {
845          pCkRegion = rgnList;          pCkRegion = rgnList;
846    
847            // articulation informations
848          RIFF::Chunk* rgnh = rgnList->GetSubChunk(CHUNK_ID_RGNH);          RIFF::Chunk* rgnh = rgnList->GetSubChunk(CHUNK_ID_RGNH);
849          rgnh->Read(&KeyRange, 2, 2);          if (rgnh) {
850          rgnh->Read(&VelocityRange, 2, 2);              rgnh->Read(&KeyRange, 2, 2);
851          uint16_t optionflags = rgnh->ReadUint16();              rgnh->Read(&VelocityRange, 2, 2);
852          SelfNonExclusive = optionflags & F_RGN_OPTION_SELFNONEXCLUSIVE;              FormatOptionFlags = rgnh->ReadUint16();
853          KeyGroup = rgnh->ReadUint16();              KeyGroup = rgnh->ReadUint16();
854          // Layer is optional              // Layer is optional
855          if (rgnh->RemainingBytes() >= sizeof(uint16_t)) {              if (rgnh->RemainingBytes() >= sizeof(uint16_t)) {
856              rgnh->Read(&Layer, 1, sizeof(uint16_t));                  rgnh->Read(&Layer, 1, sizeof(uint16_t));
857                } else Layer = 0;
858            } else { // 'rgnh' chunk is missing
859                KeyRange.low  = 0;
860                KeyRange.high = 127;
861                VelocityRange.low  = 0;
862                VelocityRange.high = 127;
863                FormatOptionFlags = F_RGN_OPTION_SELFNONEXCLUSIVE;
864                KeyGroup = 0;
865                Layer = 0;
866          }          }
867          else Layer = 0;          SelfNonExclusive = FormatOptionFlags & F_RGN_OPTION_SELFNONEXCLUSIVE;
868    
869            // sample informations
870          RIFF::Chunk* wlnk = rgnList->GetSubChunk(CHUNK_ID_WLNK);          RIFF::Chunk* wlnk = rgnList->GetSubChunk(CHUNK_ID_WLNK);
871          optionflags  = wlnk->ReadUint16();          if (wlnk) {
872          PhaseMaster  = optionflags & F_WAVELINK_PHASE_MASTER;              WaveLinkOptionFlags = wlnk->ReadUint16();
873          MultiChannel = optionflags & F_WAVELINK_MULTICHANNEL;              PhaseGroup          = wlnk->ReadUint16();
874          PhaseGroup         = wlnk->ReadUint16();              Channel             = wlnk->ReadUint32();
875          Channel            = wlnk->ReadUint32();              WavePoolTableIndex  = wlnk->ReadUint32();
876          WavePoolTableIndex = wlnk->ReadUint32();          } else { // 'wlnk' chunk is missing
877                WaveLinkOptionFlags = 0;
878                PhaseGroup          = 0;
879                Channel             = 0; // mono
880                WavePoolTableIndex  = 0; // first entry in wave pool table
881            }
882            PhaseMaster  = WaveLinkOptionFlags & F_WAVELINK_PHASE_MASTER;
883            MultiChannel = WaveLinkOptionFlags & F_WAVELINK_MULTICHANNEL;
884    
885          pSample = NULL;          pSample = NULL;
886      }      }
887    
888        /** @brief Destructor.
889         *
890         * Removes RIFF chunks associated with this Region.
891         */
892      Region::~Region() {      Region::~Region() {
893            RIFF::List* pParent = pCkRegion->GetParent();
894            pParent->DeleteSubChunk(pCkRegion);
895      }      }
896    
897      Sample* Region::GetSample() {      Sample* Region::GetSample() {
# Line 327  namespace DLS { Line 906  namespace DLS {
906          return NULL;          return NULL;
907      }      }
908    
909        /**
910         * Assign another sample to this Region.
911         *
912         * @param pSample - sample to be assigned
913         */
914        void Region::SetSample(Sample* pSample) {
915            this->pSample = pSample;
916            WavePoolTableIndex = 0; // we update this offset when we Save()
917        }
918    
919        /**
920         * Modifies the key range of this Region and makes sure the respective
921         * chunks are in correct order.
922         *
923         * @param Low  - lower end of key range
924         * @param High - upper end of key range
925         */
926        void Region::SetKeyRange(uint16_t Low, uint16_t High) {
927            KeyRange.low  = Low;
928            KeyRange.high = High;
929    
930            // make sure regions are already loaded
931            Instrument* pInstrument = (Instrument*) GetParent();
932            if (!pInstrument->pRegions) pInstrument->LoadRegions();
933            if (!pInstrument->pRegions) return;
934    
935            // find the r which is the first one to the right of this region
936            // at its new position
937            Region* r = NULL;
938            Region* prev_region = NULL;
939            for (
940                Instrument::RegionList::iterator iter = pInstrument->pRegions->begin();
941                iter != pInstrument->pRegions->end(); iter++
942            ) {
943                if ((*iter)->KeyRange.low > this->KeyRange.low) {
944                    r = *iter;
945                    break;
946                }
947                prev_region = *iter;
948            }
949    
950            // place this region before r if it's not already there
951            if (prev_region != this) pInstrument->MoveRegion(this, r);
952        }
953    
954        /**
955         * Apply Region settings to the respective RIFF chunks. You have to
956         * call File::Save() to make changes persistent.
957         *
958         * @throws Exception - if the Region's sample could not be found
959         */
960        void Region::UpdateChunks() {
961            // make sure 'rgnh' chunk exists
962            RIFF::Chunk* rgnh = pCkRegion->GetSubChunk(CHUNK_ID_RGNH);
963            if (!rgnh) rgnh = pCkRegion->AddSubChunk(CHUNK_ID_RGNH, Layer ? 14 : 12);
964            uint8_t* pData = (uint8_t*) rgnh->LoadChunkData();
965            FormatOptionFlags = (SelfNonExclusive)
966                                    ? FormatOptionFlags | F_RGN_OPTION_SELFNONEXCLUSIVE
967                                    : FormatOptionFlags & (~F_RGN_OPTION_SELFNONEXCLUSIVE);
968            // update 'rgnh' chunk
969            store16(&pData[0], KeyRange.low);
970            store16(&pData[2], KeyRange.high);
971            store16(&pData[4], VelocityRange.low);
972            store16(&pData[6], VelocityRange.high);
973            store16(&pData[8], FormatOptionFlags);
974            store16(&pData[10], KeyGroup);
975            if (rgnh->GetSize() >= 14) store16(&pData[12], Layer);
976    
977            // update chunks of base classes as well (but skip Resource,
978            // as a rgn doesn't seem to have dlid and INFO chunks)
979            Articulator::UpdateChunks();
980            Sampler::UpdateChunks();
981    
982            // make sure 'wlnk' chunk exists
983            RIFF::Chunk* wlnk = pCkRegion->GetSubChunk(CHUNK_ID_WLNK);
984            if (!wlnk) wlnk = pCkRegion->AddSubChunk(CHUNK_ID_WLNK, 12);
985            pData = (uint8_t*) wlnk->LoadChunkData();
986            WaveLinkOptionFlags = (PhaseMaster)
987                                      ? WaveLinkOptionFlags | F_WAVELINK_PHASE_MASTER
988                                      : WaveLinkOptionFlags & (~F_WAVELINK_PHASE_MASTER);
989            WaveLinkOptionFlags = (MultiChannel)
990                                      ? WaveLinkOptionFlags | F_WAVELINK_MULTICHANNEL
991                                      : WaveLinkOptionFlags & (~F_WAVELINK_MULTICHANNEL);
992            // get sample's wave pool table index
993            int index = -1;
994            File* pFile = (File*) GetParent()->GetParent();
995            if (pFile->pSamples) {
996                File::SampleList::iterator iter = pFile->pSamples->begin();
997                File::SampleList::iterator end  = pFile->pSamples->end();
998                for (int i = 0; iter != end; ++iter, i++) {
999                    if (*iter == pSample) {
1000                        index = i;
1001                        break;
1002                    }
1003                }
1004            }
1005            WavePoolTableIndex = index;
1006            // update 'wlnk' chunk
1007            store16(&pData[0], WaveLinkOptionFlags);
1008            store16(&pData[2], PhaseGroup);
1009            store32(&pData[4], Channel);
1010            store32(&pData[8], WavePoolTableIndex);
1011        }
1012    
1013    
1014    
1015  // *************** Instrument ***************  // *************** Instrument ***************
1016  // *  // *
1017    
1018        /** @brief Constructor.
1019         *
1020         * Load an existing instrument definition or create a new one. An 'ins'
1021         * list chunk must be given to this constructor. In case this 'ins' list
1022         * chunk contains a 'insh' chunk, the instrument data fields will be
1023         * loaded from there, otherwise default values will be used and the
1024         * 'insh' chunk will be created once File::Save() was called.
1025         *
1026         * @param pFile   - pointer to DLS::File where this instrument is
1027         *                  located (or will be located)
1028         * @param insList - pointer to 'ins' list chunk which is (or will be)
1029         *                  associated with this instrument
1030         */
1031      Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {      Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {
1032          pCkInstrument = insList;          pCkInstrument = insList;
1033    
         RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);  
         if (!insh) throw DLS::Exception("Mandatory chunks in <lins> list chunk not found.");  
         Regions = insh->ReadUint32();  
1034          midi_locale_t locale;          midi_locale_t locale;
1035          insh->Read(&locale, 2, 4);          RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
1036            if (insh) {
1037                Regions = insh->ReadUint32();
1038                insh->Read(&locale, 2, 4);
1039            } else { // 'insh' chunk missing
1040                Regions = 0;
1041                locale.bank       = 0;
1042                locale.instrument = 0;
1043            }
1044    
1045          MIDIProgram    = locale.instrument;          MIDIProgram    = locale.instrument;
1046          IsDrum         = locale.bank & DRUM_TYPE_MASK;          IsDrum         = locale.bank & DRUM_TYPE_MASK;
1047          MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);          MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);
1048          MIDIBankFine   = (uint8_t) MIDI_BANK_FINE(locale.bank);          MIDIBankFine   = (uint8_t) MIDI_BANK_FINE(locale.bank);
1049          MIDIBank       = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);          MIDIBank       = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);
1050    
1051          pRegions   = NULL;          pRegions = NULL;
1052      }      }
1053    
1054      Region* Instrument::GetFirstRegion() {      Region* Instrument::GetFirstRegion() {
# Line 363  namespace DLS { Line 1065  namespace DLS {
1065      }      }
1066    
1067      void Instrument::LoadRegions() {      void Instrument::LoadRegions() {
1068            if (!pRegions) pRegions = new RegionList;
1069          RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);          RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1070          if (!lrgn) throw DLS::Exception("Mandatory chunks in <ins > chunk not found.");          if (lrgn) {
1071          uint32_t regionCkType = (lrgn->GetSubList(LIST_TYPE_RGN2)) ? LIST_TYPE_RGN2 : LIST_TYPE_RGN; // prefer regions level 2              uint32_t regionCkType = (lrgn->GetSubList(LIST_TYPE_RGN2)) ? LIST_TYPE_RGN2 : LIST_TYPE_RGN; // prefer regions level 2
1072          RIFF::List* rgn = lrgn->GetFirstSubList();              RIFF::List* rgn = lrgn->GetFirstSubList();
1073          while (rgn) {              while (rgn) {
1074              if (rgn->GetListType() == regionCkType) {                  if (rgn->GetListType() == regionCkType) {
1075                  if (!pRegions) pRegions = new RegionList;                      pRegions->push_back(new Region(this, rgn));
1076                  pRegions->push_back(new Region(this, rgn));                  }
1077                    rgn = lrgn->GetNextSubList();
1078              }              }
             rgn = lrgn->GetNextSubList();  
1079          }          }
1080      }      }
1081    
1082        Region* Instrument::AddRegion() {
1083            if (!pRegions) LoadRegions();
1084            RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1085            if (!lrgn)  lrgn = pCkInstrument->AddSubList(LIST_TYPE_LRGN);
1086            RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN);
1087            Region* pNewRegion = new Region(this, rgn);
1088            pRegions->push_back(pNewRegion);
1089            Regions = pRegions->size();
1090            return pNewRegion;
1091        }
1092    
1093        void Instrument::MoveRegion(Region* pSrc, Region* pDst) {
1094            RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1095            lrgn->MoveSubChunk(pSrc->pCkRegion, pDst ? pDst->pCkRegion : 0);
1096    
1097            pRegions->remove(pSrc);
1098            RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pDst);
1099            pRegions->insert(iter, pSrc);
1100        }
1101    
1102        void Instrument::DeleteRegion(Region* pRegion) {
1103            if (!pRegions) return;
1104            RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pRegion);
1105            if (iter == pRegions->end()) return;
1106            pRegions->erase(iter);
1107            Regions = pRegions->size();
1108            delete pRegion;
1109        }
1110    
1111        /**
1112         * Apply Instrument with all its Regions to the respective RIFF chunks.
1113         * You have to call File::Save() to make changes persistent.
1114         *
1115         * @throws Exception - on errors
1116         */
1117        void Instrument::UpdateChunks() {
1118            // first update base classes' chunks
1119            Resource::UpdateChunks();
1120            Articulator::UpdateChunks();
1121            // make sure 'insh' chunk exists
1122            RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
1123            if (!insh) insh = pCkInstrument->AddSubChunk(CHUNK_ID_INSH, 12);
1124            uint8_t* pData = (uint8_t*) insh->LoadChunkData();
1125            // update 'insh' chunk
1126            Regions = (pRegions) ? pRegions->size() : 0;
1127            midi_locale_t locale;
1128            locale.instrument = MIDIProgram;
1129            locale.bank       = MIDI_BANK_ENCODE(MIDIBankCoarse, MIDIBankFine);
1130            locale.bank       = (IsDrum) ? locale.bank | DRUM_TYPE_MASK : locale.bank & (~DRUM_TYPE_MASK);
1131            MIDIBank          = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine); // just a sync, when we're at it
1132            store32(&pData[0], Regions);
1133            store32(&pData[4], locale.bank);
1134            store32(&pData[8], locale.instrument);
1135            // update Region's chunks
1136            if (!pRegions) return;
1137            RegionList::iterator iter = pRegions->begin();
1138            RegionList::iterator end  = pRegions->end();
1139            for (; iter != end; ++iter) {
1140                (*iter)->UpdateChunks();
1141            }
1142        }
1143    
1144        /** @brief Destructor.
1145         *
1146         * Removes RIFF chunks associated with this Instrument and frees all
1147         * memory occupied by this instrument.
1148         */
1149      Instrument::~Instrument() {      Instrument::~Instrument() {
1150          if (pRegions) {          if (pRegions) {
1151              RegionList::iterator iter = pRegions->begin();              RegionList::iterator iter = pRegions->begin();
# Line 386  namespace DLS { Line 1156  namespace DLS {
1156              }              }
1157              delete pRegions;              delete pRegions;
1158          }          }
1159            // remove instrument's chunks
1160            RIFF::List* pParent = pCkInstrument->GetParent();
1161            pParent->DeleteSubChunk(pCkInstrument);
1162      }      }
1163    
1164    
# Line 393  namespace DLS { Line 1166  namespace DLS {
1166  // *************** File ***************  // *************** File ***************
1167  // *  // *
1168    
1169        /** @brief Constructor.
1170         *
1171         * Default constructor, use this to create an empty DLS file. You have
1172         * to add samples, instruments and finally call Save() to actually write
1173         * a DLS file.
1174         */
1175        File::File() : Resource(NULL, pRIFF = new RIFF::File(RIFF_TYPE_DLS)) {
1176            pRIFF->SetByteOrder(RIFF::endian_little);
1177            pVersion = new version_t;
1178            pVersion->major   = 0;
1179            pVersion->minor   = 0;
1180            pVersion->release = 0;
1181            pVersion->build   = 0;
1182    
1183            Instruments      = 0;
1184            WavePoolCount    = 0;
1185            pWavePoolTable   = NULL;
1186            pWavePoolTableHi = NULL;
1187            WavePoolHeaderSize = 8;
1188    
1189            pSamples     = NULL;
1190            pInstruments = NULL;
1191    
1192            b64BitWavePoolOffsets = false;
1193        }
1194    
1195        /** @brief Constructor.
1196         *
1197         * Load an existing DLS file.
1198         *
1199         * @param pRIFF - pointer to a RIFF file which is actually the DLS file
1200         *                to load
1201         * @throws Exception if given file is not a DLS file, expected chunks
1202         *                   are missing
1203         */
1204      File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {      File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {
1205          if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");          if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");
1206          this->pRIFF = pRIFF;          this->pRIFF = pRIFF;
# Line 409  namespace DLS { Line 1217  namespace DLS {
1217          Instruments = colh->ReadUint32();          Instruments = colh->ReadUint32();
1218    
1219          RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);          RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1220          if (!ptbl) throw DLS::Exception("Mandatory <ptbl> chunk not found.");          if (!ptbl) { // pool table is missing - this is probably an ".art" file
1221          uint32_t headersize = ptbl->ReadUint32();              WavePoolCount    = 0;
1222          WavePoolCount  = ptbl->ReadUint32();              pWavePoolTable   = NULL;
1223          pWavePoolTable = new uint32_t[WavePoolCount];              pWavePoolTableHi = NULL;
1224          ptbl->SetPos(headersize);              WavePoolHeaderSize = 8;
1225                b64BitWavePoolOffsets = false;
1226          // Check for 64 bit offsets (used in gig v3 files)          } else {
1227          if (ptbl->GetSize() - headersize == WavePoolCount * 8) {              WavePoolHeaderSize = ptbl->ReadUint32();
1228              for (int i = 0 ; i < WavePoolCount ; i++) {              WavePoolCount  = ptbl->ReadUint32();
1229                  // Just ignore the upper bits for now              pWavePoolTable = new uint32_t[WavePoolCount];
1230                  uint32_t upper = ptbl->ReadUint32();              pWavePoolTableHi = new uint32_t[WavePoolCount];
1231                  pWavePoolTable[i] = ptbl->ReadUint32();              ptbl->SetPos(WavePoolHeaderSize);
1232                  if (upper || (pWavePoolTable[i] & 0x80000000))  
1233                      throw DLS::Exception("Files larger than 2 GB not yet supported");              // Check for 64 bit offsets (used in gig v3 files)
1234                b64BitWavePoolOffsets = (ptbl->GetSize() - WavePoolHeaderSize == WavePoolCount * 8);
1235                if (b64BitWavePoolOffsets) {
1236                    for (int i = 0 ; i < WavePoolCount ; i++) {
1237                        pWavePoolTableHi[i] = ptbl->ReadUint32();
1238                        pWavePoolTable[i] = ptbl->ReadUint32();
1239                        if (pWavePoolTable[i] & 0x80000000)
1240                            throw DLS::Exception("Files larger than 2 GB not yet supported");
1241                    }
1242                } else { // conventional 32 bit offsets
1243                    ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));
1244                    for (int i = 0 ; i < WavePoolCount ; i++) pWavePoolTableHi[i] = 0;
1245              }              }
1246          }          }
         else ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));  
1247    
1248          pSamples     = NULL;          pSamples     = NULL;
1249          pInstruments = NULL;          pInstruments = NULL;
         Instruments  = 0;  
1250      }      }
1251    
1252      File::~File() {      File::~File() {
# Line 454  namespace DLS { Line 1271  namespace DLS {
1271          }          }
1272    
1273          if (pWavePoolTable) delete[] pWavePoolTable;          if (pWavePoolTable) delete[] pWavePoolTable;
1274            if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1275          if (pVersion) delete pVersion;          if (pVersion) delete pVersion;
1276            for (std::list<RIFF::File*>::iterator i = ExtensionFiles.begin() ; i != ExtensionFiles.end() ; i++)
1277                delete *i;
1278      }      }
1279    
1280      Sample* File::GetFirstSample() {      Sample* File::GetFirstSample() {
# Line 471  namespace DLS { Line 1291  namespace DLS {
1291      }      }
1292    
1293      void File::LoadSamples() {      void File::LoadSamples() {
1294            if (!pSamples) pSamples = new SampleList;
1295          RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);          RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1296          if (wvpl) {          if (wvpl) {
1297              unsigned long wvplFileOffset = wvpl->GetFilePos();              unsigned long wvplFileOffset = wvpl->GetFilePos();
1298              RIFF::List* wave = wvpl->GetFirstSubList();              RIFF::List* wave = wvpl->GetFirstSubList();
1299              while (wave) {              while (wave) {
1300                  if (wave->GetListType() == LIST_TYPE_WAVE) {                  if (wave->GetListType() == LIST_TYPE_WAVE) {
                     if (!pSamples) pSamples = new SampleList;  
1301                      unsigned long waveFileOffset = wave->GetFilePos();                      unsigned long waveFileOffset = wave->GetFilePos();
1302                      pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));                      pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));
1303                  }                  }
# Line 491  namespace DLS { Line 1311  namespace DLS {
1311                  RIFF::List* wave = dwpl->GetFirstSubList();                  RIFF::List* wave = dwpl->GetFirstSubList();
1312                  while (wave) {                  while (wave) {
1313                      if (wave->GetListType() == LIST_TYPE_WAVE) {                      if (wave->GetListType() == LIST_TYPE_WAVE) {
                         if (!pSamples) pSamples = new SampleList;  
1314                          unsigned long waveFileOffset = wave->GetFilePos();                          unsigned long waveFileOffset = wave->GetFilePos();
1315                          pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));                          pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));
1316                      }                      }
# Line 501  namespace DLS { Line 1320  namespace DLS {
1320          }          }
1321      }      }
1322    
1323        /** @brief Add a new sample.
1324         *
1325         * This will create a new Sample object for the DLS file. You have to
1326         * call Save() to make this persistent to the file.
1327         *
1328         * @returns pointer to new Sample object
1329         */
1330        Sample* File::AddSample() {
1331           if (!pSamples) LoadSamples();
1332           __ensureMandatoryChunksExist();
1333           RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1334           // create new Sample object and its respective 'wave' list chunk
1335           RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);
1336           Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);
1337           pSamples->push_back(pSample);
1338           return pSample;
1339        }
1340    
1341        /** @brief Delete a sample.
1342         *
1343         * This will delete the given Sample object from the DLS file. You have
1344         * to call Save() to make this persistent to the file.
1345         *
1346         * @param pSample - sample to delete
1347         */
1348        void File::DeleteSample(Sample* pSample) {
1349            if (!pSamples) return;
1350            SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), pSample);
1351            if (iter == pSamples->end()) return;
1352            pSamples->erase(iter);
1353            delete pSample;
1354        }
1355    
1356      Instrument* File::GetFirstInstrument() {      Instrument* File::GetFirstInstrument() {
1357          if (!pInstruments) LoadInstruments();          if (!pInstruments) LoadInstruments();
1358          if (!pInstruments) return NULL;          if (!pInstruments) return NULL;
# Line 515  namespace DLS { Line 1367  namespace DLS {
1367      }      }
1368    
1369      void File::LoadInstruments() {      void File::LoadInstruments() {
1370            if (!pInstruments) pInstruments = new InstrumentList;
1371          RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);          RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1372          if (lstInstruments) {          if (lstInstruments) {
1373              RIFF::List* lstInstr = lstInstruments->GetFirstSubList();              RIFF::List* lstInstr = lstInstruments->GetFirstSubList();
1374              while (lstInstr) {              while (lstInstr) {
1375                  if (lstInstr->GetListType() == LIST_TYPE_INS) {                  if (lstInstr->GetListType() == LIST_TYPE_INS) {
                     if (!pInstruments) pInstruments = new InstrumentList;  
1376                      pInstruments->push_back(new Instrument(this, lstInstr));                      pInstruments->push_back(new Instrument(this, lstInstr));
1377                  }                  }
1378                  lstInstr = lstInstruments->GetNextSubList();                  lstInstr = lstInstruments->GetNextSubList();
# Line 528  namespace DLS { Line 1380  namespace DLS {
1380          }          }
1381      }      }
1382    
1383        /** @brief Add a new instrument definition.
1384         *
1385         * This will create a new Instrument object for the DLS file. You have
1386         * to call Save() to make this persistent to the file.
1387         *
1388         * @returns pointer to new Instrument object
1389         */
1390        Instrument* File::AddInstrument() {
1391           if (!pInstruments) LoadInstruments();
1392           __ensureMandatoryChunksExist();
1393           RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1394           RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);
1395           Instrument* pInstrument = new Instrument(this, lstInstr);
1396           pInstruments->push_back(pInstrument);
1397           return pInstrument;
1398        }
1399    
1400        /** @brief Delete an instrument.
1401         *
1402         * This will delete the given Instrument object from the DLS file. You
1403         * have to call Save() to make this persistent to the file.
1404         *
1405         * @param pInstrument - instrument to delete
1406         */
1407        void File::DeleteInstrument(Instrument* pInstrument) {
1408            if (!pInstruments) return;
1409            InstrumentList::iterator iter = find(pInstruments->begin(), pInstruments->end(), pInstrument);
1410            if (iter == pInstruments->end()) return;
1411            pInstruments->erase(iter);
1412            delete pInstrument;
1413        }
1414    
1415        /**
1416         * Apply all the DLS file's current instruments, samples and settings to
1417         * the respective RIFF chunks. You have to call Save() to make changes
1418         * persistent.
1419         *
1420         * @throws Exception - on errors
1421         */
1422        void File::UpdateChunks() {
1423            // first update base class's chunks
1424            Resource::UpdateChunks();
1425    
1426            // if version struct exists, update 'vers' chunk
1427            if (pVersion) {
1428                RIFF::Chunk* ckVersion    = pRIFF->GetSubChunk(CHUNK_ID_VERS);
1429                if (!ckVersion) ckVersion = pRIFF->AddSubChunk(CHUNK_ID_VERS, 8);
1430                uint8_t* pData = (uint8_t*) ckVersion->LoadChunkData();
1431                store16(&pData[0], pVersion->minor);
1432                store16(&pData[2], pVersion->major);
1433                store16(&pData[4], pVersion->build);
1434                store16(&pData[6], pVersion->release);
1435            }
1436    
1437            // update 'colh' chunk
1438            Instruments = (pInstruments) ? pInstruments->size() : 0;
1439            RIFF::Chunk* colh = pRIFF->GetSubChunk(CHUNK_ID_COLH);
1440            if (!colh)   colh = pRIFF->AddSubChunk(CHUNK_ID_COLH, 4);
1441            uint8_t* pData = (uint8_t*) colh->LoadChunkData();
1442            store32(pData, Instruments);
1443    
1444            // update instrument's chunks
1445            if (pInstruments) {
1446                InstrumentList::iterator iter = pInstruments->begin();
1447                InstrumentList::iterator end  = pInstruments->end();
1448                for (; iter != end; ++iter) {
1449                    (*iter)->UpdateChunks();
1450                }
1451            }
1452    
1453            // update 'ptbl' chunk
1454            const int iSamples = (pSamples) ? pSamples->size() : 0;
1455            const int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1456            RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1457            if (!ptbl)   ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/);
1458            const int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples;
1459            ptbl->Resize(iPtblSize);
1460            pData = (uint8_t*) ptbl->LoadChunkData();
1461            WavePoolCount = iSamples;
1462            store32(&pData[4], WavePoolCount);
1463            // we actually update the sample offsets in the pool table when we Save()
1464            memset(&pData[WavePoolHeaderSize], 0, iPtblSize - WavePoolHeaderSize);
1465    
1466            // update sample's chunks
1467            if (pSamples) {
1468                SampleList::iterator iter = pSamples->begin();
1469                SampleList::iterator end  = pSamples->end();
1470                for (; iter != end; ++iter) {
1471                    (*iter)->UpdateChunks();
1472                }
1473            }
1474        }
1475    
1476        /** @brief Save changes to another file.
1477         *
1478         * Make all changes persistent by writing them to another file.
1479         * <b>Caution:</b> this method is optimized for writing to
1480         * <b>another</b> file, do not use it to save the changes to the same
1481         * file! Use Save() (without path argument) in that case instead!
1482         * Ignoring this might result in a corrupted file!
1483         *
1484         * After calling this method, this File object will be associated with
1485         * the new file (given by \a Path) afterwards.
1486         *
1487         * @param Path - path and file name where everything should be written to
1488         */
1489        void File::Save(const String& Path) {
1490            UpdateChunks();
1491            pRIFF->Save(Path);
1492            __UpdateWavePoolTableChunk();
1493        }
1494    
1495        /** @brief Save changes to same file.
1496         *
1497         * Make all changes persistent by writing them to the actual (same)
1498         * file. The file might temporarily grow to a higher size than it will
1499         * have at the end of the saving process.
1500         *
1501         * @throws RIFF::Exception if any kind of IO error occured
1502         * @throws DLS::Exception  if any kind of DLS specific error occured
1503         */
1504        void File::Save() {
1505            UpdateChunks();
1506            pRIFF->Save();
1507            __UpdateWavePoolTableChunk();
1508        }
1509    
1510        /**
1511         * Checks if all (for DLS) mandatory chunks exist, if not they will be
1512         * created. Note that those chunks will not be made persistent until
1513         * Save() was called.
1514         */
1515        void File::__ensureMandatoryChunksExist() {
1516           // enusre 'lins' list chunk exists (mandatory for instrument definitions)
1517           RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1518           if (!lstInstruments) pRIFF->AddSubList(LIST_TYPE_LINS);
1519           // ensure 'ptbl' chunk exists (mandatory for samples)
1520           RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1521           if (!ptbl) {
1522               const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1523               ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, WavePoolHeaderSize + iOffsetSize);
1524           }
1525           // enusre 'wvpl' list chunk exists (mandatory for samples)
1526           RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1527           if (!wvpl) pRIFF->AddSubList(LIST_TYPE_WVPL);
1528        }
1529    
1530        /**
1531         * Updates (persistently) the wave pool table with offsets to all
1532         * currently available samples. <b>Caution:</b> this method assumes the
1533         * 'ptbl' chunk to be already of the correct size and the file to be
1534         * writable, so usually this method is only called after a Save() call.
1535         *
1536         * @throws Exception - if 'ptbl' chunk is too small (should only occur
1537         *                     if there's a bug)
1538         */
1539        void File::__UpdateWavePoolTableChunk() {
1540            __UpdateWavePoolTable();
1541            RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1542            const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1543            // check if 'ptbl' chunk is large enough
1544            WavePoolCount = (pSamples) ? pSamples->size() : 0;
1545            const unsigned long ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount;
1546            if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small");
1547            // save the 'ptbl' chunk's current read/write position
1548            unsigned long ulOriginalPos = ptbl->GetPos();
1549            // update headers
1550            ptbl->SetPos(0);
1551            uint32_t tmp = WavePoolHeaderSize;
1552            ptbl->WriteUint32(&tmp);
1553            tmp = WavePoolCount;
1554            ptbl->WriteUint32(&tmp);
1555            // update offsets
1556            ptbl->SetPos(WavePoolHeaderSize);
1557            if (b64BitWavePoolOffsets) {
1558                for (int i = 0 ; i < WavePoolCount ; i++) {
1559                    tmp = pWavePoolTableHi[i];
1560                    ptbl->WriteUint32(&tmp);
1561                    tmp = pWavePoolTable[i];
1562                    ptbl->WriteUint32(&tmp);
1563                }
1564            } else { // conventional 32 bit offsets
1565                for (int i = 0 ; i < WavePoolCount ; i++) {
1566                    tmp = pWavePoolTable[i];
1567                    ptbl->WriteUint32(&tmp);
1568                }
1569            }
1570            // restore 'ptbl' chunk's original read/write position
1571            ptbl->SetPos(ulOriginalPos);
1572        }
1573    
1574        /**
1575         * Updates the wave pool table with offsets to all currently available
1576         * samples. <b>Caution:</b> this method assumes the 'wvpl' list chunk
1577         * exists already.
1578         */
1579        void File::__UpdateWavePoolTable() {
1580            WavePoolCount = (pSamples) ? pSamples->size() : 0;
1581            // resize wave pool table arrays
1582            if (pWavePoolTable)   delete[] pWavePoolTable;
1583            if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1584            pWavePoolTable   = new uint32_t[WavePoolCount];
1585            pWavePoolTableHi = new uint32_t[WavePoolCount];
1586            if (!pSamples) return;
1587            // update offsets int wave pool table
1588            RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1589            uint64_t wvplFileOffset = wvpl->GetFilePos();
1590            if (b64BitWavePoolOffsets) {
1591                SampleList::iterator iter = pSamples->begin();
1592                SampleList::iterator end  = pSamples->end();
1593                for (int i = 0 ; iter != end ; ++iter, i++) {
1594                    uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1595                    (*iter)->ulWavePoolOffset = _64BitOffset;
1596                    pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32);
1597                    pWavePoolTable[i]   = (uint32_t) _64BitOffset;
1598                }
1599            } else { // conventional 32 bit offsets
1600                SampleList::iterator iter = pSamples->begin();
1601                SampleList::iterator end  = pSamples->end();
1602                for (int i = 0 ; iter != end ; ++iter, i++) {
1603                    uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1604                    (*iter)->ulWavePoolOffset = _64BitOffset;
1605                    pWavePoolTable[i] = (uint32_t) _64BitOffset;
1606                }
1607            }
1608        }
1609    
1610    
1611    
1612  // *************** Exception ***************  // *************** Exception ***************
# Line 540  namespace DLS { Line 1619  namespace DLS {
1619          std::cout << "DLS::Exception: " << Message << std::endl;          std::cout << "DLS::Exception: " << Message << std::endl;
1620      }      }
1621    
1622    
1623    // *************** functions ***************
1624    // *
1625    
1626        /**
1627         * Returns the name of this C++ library. This is usually "libgig" of
1628         * course. This call is equivalent to RIFF::libraryName() and
1629         * gig::libraryName().
1630         */
1631        String libraryName() {
1632            return PACKAGE;
1633        }
1634    
1635        /**
1636         * Returns version of this C++ library. This call is equivalent to
1637         * RIFF::libraryVersion() and gig::libraryVersion().
1638         */
1639        String libraryVersion() {
1640            return VERSION;
1641        }
1642    
1643  } // namespace DLS  } // namespace DLS
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