/[svn]/libgig/trunk/src/DLS.cpp
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revision 317 by schoenebeck, Sat Dec 4 14:13:49 2004 UTC revision 1335 by schoenebeck, Sun Sep 9 21:22:58 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    
# Line 159  namespace DLS { Line 373  namespace DLS {
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        /**
516         * Apply all sample player options to the respective RIFF chunk. You
517         * have to call File::Save() to make changes persistent.
518         */
519        void Sampler::UpdateChunks() {
520            // make sure 'wsmp' chunk exists
521            RIFF::Chunk* wsmp = pParentList->GetSubChunk(CHUNK_ID_WSMP);
522            if (!wsmp) {
523                uiHeaderSize = 20;
524                wsmp = pParentList->AddSubChunk(CHUNK_ID_WSMP, uiHeaderSize + SampleLoops * 16);
525            }
526            uint8_t* pData = (uint8_t*) wsmp->LoadChunkData();
527            // update headers size
528            store32(&pData[0], uiHeaderSize);
529            // update respective sampler options bits
530            SamplerOptions = (NoSampleDepthTruncation) ? SamplerOptions | F_WSMP_NO_TRUNCATION
531                                                       : SamplerOptions & (~F_WSMP_NO_TRUNCATION);
532            SamplerOptions = (NoSampleCompression) ? SamplerOptions | F_WSMP_NO_COMPRESSION
533                                                   : SamplerOptions & (~F_WSMP_NO_COMPRESSION);
534            store16(&pData[4], UnityNote);
535            store16(&pData[6], FineTune);
536            store32(&pData[8], Gain);
537            store32(&pData[12], SamplerOptions);
538            store32(&pData[16], SampleLoops);
539            // update loop definitions
540            for (uint32_t i = 0; i < SampleLoops; i++) {
541                //FIXME: this does not handle extended loop structs correctly
542                store32(&pData[uiHeaderSize + i * 16], pSampleLoops[i].Size);
543                store32(&pData[uiHeaderSize + i * 16 + 4], pSampleLoops[i].LoopType);
544                store32(&pData[uiHeaderSize + i * 16 + 8], pSampleLoops[i].LoopStart);
545                store32(&pData[uiHeaderSize + i * 16 + 12], pSampleLoops[i].LoopLength);
546            }
547        }
548    
549        /**
550         * Adds a new sample loop with the provided loop definition.
551         *
552         * @param pLoopDef - points to a loop definition that is to be copied
553         */
554        void Sampler::AddSampleLoop(sample_loop_t* pLoopDef) {
555            sample_loop_t* pNewLoops = new sample_loop_t[SampleLoops + 1];
556            // copy old loops array
557            for (int i = 0; i < SampleLoops; i++) {
558                pNewLoops[i] = pSampleLoops[i];
559            }
560            // add the new loop
561            pNewLoops[SampleLoops] = *pLoopDef;
562            // auto correct size field
563            pNewLoops[SampleLoops].Size = sizeof(DLS::sample_loop_t);
564            // free the old array and update the member variables
565            if (SampleLoops) delete[] pSampleLoops;
566            pSampleLoops = pNewLoops;
567            SampleLoops++;
568        }
569    
570        /**
571         * Deletes an existing sample loop.
572         *
573         * @param pLoopDef - pointer to existing loop definition
574         * @throws Exception - if given loop definition does not exist
575         */
576        void Sampler::DeleteSampleLoop(sample_loop_t* pLoopDef) {
577            sample_loop_t* pNewLoops = new sample_loop_t[SampleLoops - 1];
578            // copy old loops array (skipping given loop)
579            for (int i = 0, o = 0; i < SampleLoops; i++) {
580                if (&pSampleLoops[i] == pLoopDef) continue;
581                if (o == SampleLoops - 1)
582                    throw Exception("Could not delete Sample Loop, because it does not exist");
583                pNewLoops[o] = pSampleLoops[i];
584                o++;
585            }
586            // free the old array and update the member variables
587            if (SampleLoops) delete[] pSampleLoops;
588            pSampleLoops = pNewLoops;
589            SampleLoops--;
590        }
591    
592    
593    
594  // *************** Sample ***************  // *************** Sample ***************
595  // *  // *
596    
597        /** @brief Constructor.
598         *
599         * Load an existing sample or create a new one. A 'wave' list chunk must
600         * be given to this constructor. In case the given 'wave' list chunk
601         * contains a 'fmt' and 'data' chunk, the format and sample data will be
602         * loaded from there, otherwise default values will be used and those
603         * chunks will be created when File::Save() will be called later on.
604         *
605         * @param pFile          - pointer to DLS::File where this sample is
606         *                         located (or will be located)
607         * @param waveList       - pointer to 'wave' list chunk which is (or
608         *                         will be) associated with this sample
609         * @param WavePoolOffset - offset of this sample data from wave pool
610         *                         ('wvpl') list chunk
611         */
612      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) {
613            pWaveList = waveList;
614          ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE;          ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE;
615          pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT);          pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT);
616          pCkData   = waveList->GetSubChunk(CHUNK_ID_DATA);          pCkData   = waveList->GetSubChunk(CHUNK_ID_DATA);
617          if (!pCkFormat || !pCkData) throw DLS::Exception("Mandatory chunks in wave list not found.");          if (pCkFormat) {
618                // common fields
619          // common fields              FormatTag              = pCkFormat->ReadUint16();
620          FormatTag              = pCkFormat->ReadUint16();              Channels               = pCkFormat->ReadUint16();
621          Channels               = pCkFormat->ReadUint16();              SamplesPerSecond       = pCkFormat->ReadUint32();
622          SamplesPerSecond       = pCkFormat->ReadUint32();              AverageBytesPerSecond  = pCkFormat->ReadUint32();
623          AverageBytesPerSecond  = pCkFormat->ReadUint32();              BlockAlign             = pCkFormat->ReadUint16();
624          BlockAlign             = pCkFormat->ReadUint16();              // PCM format specific
625                if (FormatTag == DLS_WAVE_FORMAT_PCM) {
626          // PCM format specific                  BitDepth     = pCkFormat->ReadUint16();
627          if (FormatTag == WAVE_FORMAT_PCM) {                  FrameSize    = (BitDepth / 8) * Channels;
628              BitDepth     = pCkFormat->ReadUint16();              } else { // unsupported sample data format
629              FrameSize    = (FormatTag == WAVE_FORMAT_PCM) ? (BitDepth / 8) * Channels                  BitDepth     = 0;
630                                                            : 0;                  FrameSize    = 0;
631              SamplesTotal = (FormatTag == WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize              }
632                                                            : 0;          } else { // 'fmt' chunk missing
633          }              FormatTag              = DLS_WAVE_FORMAT_PCM;
634          else {              BitDepth               = 16;
635              BitDepth     = 0;              Channels               = 1;
636              FrameSize    = 0;              SamplesPerSecond       = 44100;
637              SamplesTotal = 0;              AverageBytesPerSecond  = (BitDepth / 8) * SamplesPerSecond * Channels;
638                FrameSize              = (BitDepth / 8) * Channels;
639                BlockAlign             = FrameSize;
640          }          }
641            SamplesTotal = (pCkData) ? (FormatTag == DLS_WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize
642                                                                          : 0
643                                     : 0;
644      }      }
645    
646        /** @brief Destructor.
647         *
648         * Removes RIFF chunks associated with this Sample and frees all
649         * memory occupied by this sample.
650         */
651        Sample::~Sample() {
652            RIFF::List* pParent = pWaveList->GetParent();
653            pParent->DeleteSubChunk(pWaveList);
654        }
655    
656        /** @brief Load sample data into RAM.
657         *
658         * In case the respective 'data' chunk exists, the sample data will be
659         * loaded into RAM (if not done already) and a pointer to the data in
660         * RAM will be returned. If this is a new sample, you have to call
661         * Resize() with the desired sample size to create the mandatory RIFF
662         * chunk for the sample wave data.
663         *
664         * You can call LoadChunkData() again if you previously scheduled to
665         * enlarge the sample data RIFF chunk with a Resize() call. In that case
666         * the buffer will be enlarged to the new, scheduled size and you can
667         * already place the sample wave data to the buffer and finally call
668         * File::Save() to enlarge the sample data's chunk physically and write
669         * the new sample wave data in one rush. This approach is definitely
670         * recommended if you have to enlarge and write new sample data to a lot
671         * of samples.
672         *
673         * <b>Caution:</b> the buffer pointer will be invalidated once
674         * File::Save() was called. You have to call LoadChunkData() again to
675         * get a new, valid pointer whenever File::Save() was called.
676         *
677         * @returns pointer to sample data in RAM, NULL in case respective
678         *          'data' chunk does not exist (yet)
679         * @throws Exception if data buffer could not be enlarged
680         * @see Resize(), File::Save()
681         */
682      void* Sample::LoadSampleData() {      void* Sample::LoadSampleData() {
683          return pCkData->LoadChunkData();          return (pCkData) ? pCkData->LoadChunkData() : NULL;
684      }      }
685    
686        /** @brief Free sample data from RAM.
687         *
688         * In case sample data was previously successfully loaded into RAM with
689         * LoadSampleData(), this method will free the sample data from RAM.
690         */
691      void Sample::ReleaseSampleData() {      void Sample::ReleaseSampleData() {
692          pCkData->ReleaseChunkData();          if (pCkData) pCkData->ReleaseChunkData();
693        }
694    
695        /** @brief Returns sample size.
696         *
697         * Returns the sample wave form's data size (in sample points). This is
698         * actually the current, physical size (converted to sample points) of
699         * the RIFF chunk which encapsulates the sample's wave data. The
700         * returned value is dependant to the current FrameSize value.
701         *
702         * @returns number of sample points or 0 if FormatTag != DLS_WAVE_FORMAT_PCM
703         * @see FrameSize, FormatTag
704         */
705        unsigned long Sample::GetSize() {
706            if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0;
707            return (pCkData) ? pCkData->GetSize() / FrameSize : 0;
708        }
709    
710        /** @brief Resize sample.
711         *
712         * Resizes the sample's wave form data, that is the actual size of
713         * sample wave data possible to be written for this sample. This call
714         * will return immediately and just schedule the resize operation. You
715         * should call File::Save() to actually perform the resize operation(s)
716         * "physically" to the file. As this can take a while on large files, it
717         * is recommended to call Resize() first on all samples which have to be
718         * resized and finally to call File::Save() to perform all those resize
719         * operations in one rush.
720         *
721         * The actual size (in bytes) is dependant to the current FrameSize
722         * value. You may want to set FrameSize before calling Resize().
723         *
724         * <b>Caution:</b> You cannot directly write to enlarged samples before
725         * calling File::Save() as this might exceed the current sample's
726         * boundary!
727         *
728         * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is
729         * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with
730         * other formats will fail!
731         *
732         * @param iNewSize - new sample wave data size in sample points (must be
733         *                   greater than zero)
734         * @throws Excecption if FormatTag != DLS_WAVE_FORMAT_PCM
735         * @throws Exception if \a iNewSize is less than 1
736         * @see File::Save(), FrameSize, FormatTag
737         */
738        void Sample::Resize(int iNewSize) {
739            if (FormatTag != DLS_WAVE_FORMAT_PCM) throw Exception("Sample's format is not DLS_WAVE_FORMAT_PCM");
740            if (iNewSize < 1) throw Exception("Sample size must be at least one sample point");
741            const int iSizeInBytes = iNewSize * FrameSize;
742            pCkData = pWaveList->GetSubChunk(CHUNK_ID_DATA);
743            if (pCkData) pCkData->Resize(iSizeInBytes);
744            else pCkData = pWaveList->AddSubChunk(CHUNK_ID_DATA, iSizeInBytes);
745      }      }
746    
747      /**      /**
# Line 256  namespace DLS { Line 749  namespace DLS {
749       * 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
750       * the sample into RAM, thus for disk streaming.       * the sample into RAM, thus for disk streaming.
751       *       *
752         * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is
753         * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to reposition the sample
754         * with other formats will fail!
755         *
756       * @param SampleCount  number of sample points       * @param SampleCount  number of sample points
757       * @param Whence       to which relation \a SampleCount refers to       * @param Whence       to which relation \a SampleCount refers to
758         * @returns new position within the sample, 0 if
759         *          FormatTag != DLS_WAVE_FORMAT_PCM
760         * @throws Exception if no data RIFF chunk was created for the sample yet
761         * @see FrameSize, FormatTag
762       */       */
763      unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) {      unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) {
764          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
765            if (!pCkData) throw Exception("No data chunk created for sample yet, call Sample::Resize() to create one");
766          unsigned long orderedBytes = SampleCount * FrameSize;          unsigned long orderedBytes = SampleCount * FrameSize;
767          unsigned long result = pCkData->SetPos(orderedBytes, Whence);          unsigned long result = pCkData->SetPos(orderedBytes, Whence);
768          return (result == orderedBytes) ? SampleCount          return (result == orderedBytes) ? SampleCount
# Line 277  namespace DLS { Line 779  namespace DLS {
779       * @param SampleCount  number of sample points to read       * @param SampleCount  number of sample points to read
780       */       */
781      unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) {      unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) {
782          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
783          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?
784      }      }
785    
786        /** @brief Write sample wave data.
787         *
788         * Writes \a SampleCount number of sample points from the buffer pointed
789         * by \a pBuffer and increments the position within the sample. Use this
790         * method to directly write the sample data to disk, i.e. if you don't
791         * want or cannot load the whole sample data into RAM.
792         *
793         * You have to Resize() the sample to the desired size and call
794         * File::Save() <b>before</b> using Write().
795         *
796         * @param pBuffer     - source buffer
797         * @param SampleCount - number of sample points to write
798         * @throws Exception if current sample size is too small
799         * @see LoadSampleData()
800         */
801        unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) {
802            if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
803            if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small");
804            return pCkData->Write(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction?
805        }
806    
807        /**
808         * Apply sample and its settings to the respective RIFF chunks. You have
809         * to call File::Save() to make changes persistent.
810         *
811         * @throws Exception if FormatTag != DLS_WAVE_FORMAT_PCM or no sample data
812         *                   was provided yet
813         */
814        void Sample::UpdateChunks() {
815            if (FormatTag != DLS_WAVE_FORMAT_PCM)
816                throw Exception("Could not save sample, only PCM format is supported");
817            // we refuse to do anything if not sample wave form was provided yet
818            if (!pCkData)
819                throw Exception("Could not save sample, there is no sample data to save");
820            // update chunks of base class as well
821            Resource::UpdateChunks();
822            // make sure 'fmt' chunk exists
823            RIFF::Chunk* pCkFormat = pWaveList->GetSubChunk(CHUNK_ID_FMT);
824            if (!pCkFormat) pCkFormat = pWaveList->AddSubChunk(CHUNK_ID_FMT, 16); // assumes PCM format
825            uint8_t* pData = (uint8_t*) pCkFormat->LoadChunkData();
826            // update 'fmt' chunk
827            store16(&pData[0], FormatTag);
828            store16(&pData[2], Channels);
829            store32(&pData[4], SamplesPerSecond);
830            store32(&pData[8], AverageBytesPerSecond);
831            store16(&pData[12], BlockAlign);
832            store16(&pData[14], BitDepth); // assuming PCM format
833        }
834    
835    
836    
837  // *************** Region ***************  // *************** Region ***************
# Line 289  namespace DLS { Line 840  namespace DLS {
840      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) {
841          pCkRegion = rgnList;          pCkRegion = rgnList;
842    
843            // articulation informations
844          RIFF::Chunk* rgnh = rgnList->GetSubChunk(CHUNK_ID_RGNH);          RIFF::Chunk* rgnh = rgnList->GetSubChunk(CHUNK_ID_RGNH);
845          rgnh->Read(&KeyRange, 2, 2);          if (rgnh) {
846          rgnh->Read(&VelocityRange, 2, 2);              rgnh->Read(&KeyRange, 2, 2);
847          uint16_t optionflags = rgnh->ReadUint16();              rgnh->Read(&VelocityRange, 2, 2);
848          SelfNonExclusive = optionflags & F_RGN_OPTION_SELFNONEXCLUSIVE;              FormatOptionFlags = rgnh->ReadUint16();
849          KeyGroup = rgnh->ReadUint16();              KeyGroup = rgnh->ReadUint16();
850          // Layer is optional              // Layer is optional
851          if (rgnh->RemainingBytes() >= sizeof(uint16_t)) {              if (rgnh->RemainingBytes() >= sizeof(uint16_t)) {
852              rgnh->Read(&Layer, 1, sizeof(uint16_t));                  rgnh->Read(&Layer, 1, sizeof(uint16_t));
853                } else Layer = 0;
854            } else { // 'rgnh' chunk is missing
855                KeyRange.low  = 0;
856                KeyRange.high = 127;
857                VelocityRange.low  = 0;
858                VelocityRange.high = 127;
859                FormatOptionFlags = F_RGN_OPTION_SELFNONEXCLUSIVE;
860                KeyGroup = 0;
861                Layer = 0;
862          }          }
863          else Layer = 0;          SelfNonExclusive = FormatOptionFlags & F_RGN_OPTION_SELFNONEXCLUSIVE;
864    
865            // sample informations
866          RIFF::Chunk* wlnk = rgnList->GetSubChunk(CHUNK_ID_WLNK);          RIFF::Chunk* wlnk = rgnList->GetSubChunk(CHUNK_ID_WLNK);
867          optionflags  = wlnk->ReadUint16();          if (wlnk) {
868          PhaseMaster  = optionflags & F_WAVELINK_PHASE_MASTER;              WaveLinkOptionFlags = wlnk->ReadUint16();
869          MultiChannel = optionflags & F_WAVELINK_MULTICHANNEL;              PhaseGroup          = wlnk->ReadUint16();
870          PhaseGroup         = wlnk->ReadUint16();              Channel             = wlnk->ReadUint32();
871          Channel            = wlnk->ReadUint32();              WavePoolTableIndex  = wlnk->ReadUint32();
872          WavePoolTableIndex = wlnk->ReadUint32();          } else { // 'wlnk' chunk is missing
873                WaveLinkOptionFlags = 0;
874                PhaseGroup          = 0;
875                Channel             = 0; // mono
876                WavePoolTableIndex  = 0; // first entry in wave pool table
877            }
878            PhaseMaster  = WaveLinkOptionFlags & F_WAVELINK_PHASE_MASTER;
879            MultiChannel = WaveLinkOptionFlags & F_WAVELINK_MULTICHANNEL;
880    
881          pSample = NULL;          pSample = NULL;
882      }      }
883    
884        /** @brief Destructor.
885         *
886         * Removes RIFF chunks associated with this Region.
887         */
888      Region::~Region() {      Region::~Region() {
889            RIFF::List* pParent = pCkRegion->GetParent();
890            pParent->DeleteSubChunk(pCkRegion);
891      }      }
892    
893      Sample* Region::GetSample() {      Sample* Region::GetSample() {
# Line 327  namespace DLS { Line 902  namespace DLS {
902          return NULL;          return NULL;
903      }      }
904    
905        /**
906         * Assign another sample to this Region.
907         *
908         * @param pSample - sample to be assigned
909         */
910        void Region::SetSample(Sample* pSample) {
911            this->pSample = pSample;
912            WavePoolTableIndex = 0; // we update this offset when we Save()
913        }
914    
915        /**
916         * Modifies the key range of this Region and makes sure the respective
917         * chunks are in correct order.
918         *
919         * @param Low  - lower end of key range
920         * @param High - upper end of key range
921         */
922        void Region::SetKeyRange(uint16_t Low, uint16_t High) {
923            KeyRange.low  = Low;
924            KeyRange.high = High;
925    
926            // make sure regions are already loaded
927            Instrument* pInstrument = (Instrument*) GetParent();
928            if (!pInstrument->pRegions) pInstrument->LoadRegions();
929            if (!pInstrument->pRegions) return;
930    
931            // find the r which is the first one to the right of this region
932            // at its new position
933            Region* r = NULL;
934            Region* prev_region = NULL;
935            for (
936                Instrument::RegionList::iterator iter = pInstrument->pRegions->begin();
937                iter != pInstrument->pRegions->end(); iter++
938            ) {
939                if ((*iter)->KeyRange.low > this->KeyRange.low) {
940                    r = *iter;
941                    break;
942                }
943                prev_region = *iter;
944            }
945    
946            // place this region before r if it's not already there
947            if (prev_region != this) pInstrument->MoveRegion(this, r);
948        }
949    
950        /**
951         * Apply Region settings to the respective RIFF chunks. You have to
952         * call File::Save() to make changes persistent.
953         *
954         * @throws Exception - if the Region's sample could not be found
955         */
956        void Region::UpdateChunks() {
957            // make sure 'rgnh' chunk exists
958            RIFF::Chunk* rgnh = pCkRegion->GetSubChunk(CHUNK_ID_RGNH);
959            if (!rgnh) rgnh = pCkRegion->AddSubChunk(CHUNK_ID_RGNH, Layer ? 14 : 12);
960            uint8_t* pData = (uint8_t*) rgnh->LoadChunkData();
961            FormatOptionFlags = (SelfNonExclusive)
962                                    ? FormatOptionFlags | F_RGN_OPTION_SELFNONEXCLUSIVE
963                                    : FormatOptionFlags & (~F_RGN_OPTION_SELFNONEXCLUSIVE);
964            // update 'rgnh' chunk
965            store16(&pData[0], KeyRange.low);
966            store16(&pData[2], KeyRange.high);
967            store16(&pData[4], VelocityRange.low);
968            store16(&pData[6], VelocityRange.high);
969            store16(&pData[8], FormatOptionFlags);
970            store16(&pData[10], KeyGroup);
971            if (rgnh->GetSize() >= 14) store16(&pData[12], Layer);
972    
973            // update chunks of base classes as well (but skip Resource,
974            // as a rgn doesn't seem to have dlid and INFO chunks)
975            Articulator::UpdateChunks();
976            Sampler::UpdateChunks();
977    
978            // make sure 'wlnk' chunk exists
979            RIFF::Chunk* wlnk = pCkRegion->GetSubChunk(CHUNK_ID_WLNK);
980            if (!wlnk) wlnk = pCkRegion->AddSubChunk(CHUNK_ID_WLNK, 12);
981            pData = (uint8_t*) wlnk->LoadChunkData();
982            WaveLinkOptionFlags = (PhaseMaster)
983                                      ? WaveLinkOptionFlags | F_WAVELINK_PHASE_MASTER
984                                      : WaveLinkOptionFlags & (~F_WAVELINK_PHASE_MASTER);
985            WaveLinkOptionFlags = (MultiChannel)
986                                      ? WaveLinkOptionFlags | F_WAVELINK_MULTICHANNEL
987                                      : WaveLinkOptionFlags & (~F_WAVELINK_MULTICHANNEL);
988            // get sample's wave pool table index
989            int index = -1;
990            File* pFile = (File*) GetParent()->GetParent();
991            if (pFile->pSamples) {
992                File::SampleList::iterator iter = pFile->pSamples->begin();
993                File::SampleList::iterator end  = pFile->pSamples->end();
994                for (int i = 0; iter != end; ++iter, i++) {
995                    if (*iter == pSample) {
996                        index = i;
997                        break;
998                    }
999                }
1000            }
1001            WavePoolTableIndex = index;
1002            // update 'wlnk' chunk
1003            store16(&pData[0], WaveLinkOptionFlags);
1004            store16(&pData[2], PhaseGroup);
1005            store32(&pData[4], Channel);
1006            store32(&pData[8], WavePoolTableIndex);
1007        }
1008    
1009    
1010    
1011  // *************** Instrument ***************  // *************** Instrument ***************
1012  // *  // *
1013    
1014        /** @brief Constructor.
1015         *
1016         * Load an existing instrument definition or create a new one. An 'ins'
1017         * list chunk must be given to this constructor. In case this 'ins' list
1018         * chunk contains a 'insh' chunk, the instrument data fields will be
1019         * loaded from there, otherwise default values will be used and the
1020         * 'insh' chunk will be created once File::Save() was called.
1021         *
1022         * @param pFile   - pointer to DLS::File where this instrument is
1023         *                  located (or will be located)
1024         * @param insList - pointer to 'ins' list chunk which is (or will be)
1025         *                  associated with this instrument
1026         */
1027      Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {      Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {
1028          pCkInstrument = insList;          pCkInstrument = insList;
1029    
         RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);  
         if (!insh) throw DLS::Exception("Mandatory chunks in <lins> list chunk not found.");  
         Regions = insh->ReadUint32();  
1030          midi_locale_t locale;          midi_locale_t locale;
1031          insh->Read(&locale, 2, 4);          RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
1032            if (insh) {
1033                Regions = insh->ReadUint32();
1034                insh->Read(&locale, 2, 4);
1035            } else { // 'insh' chunk missing
1036                Regions = 0;
1037                locale.bank       = 0;
1038                locale.instrument = 0;
1039            }
1040    
1041          MIDIProgram    = locale.instrument;          MIDIProgram    = locale.instrument;
1042          IsDrum         = locale.bank & DRUM_TYPE_MASK;          IsDrum         = locale.bank & DRUM_TYPE_MASK;
1043          MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);          MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);
1044          MIDIBankFine   = (uint8_t) MIDI_BANK_FINE(locale.bank);          MIDIBankFine   = (uint8_t) MIDI_BANK_FINE(locale.bank);
1045          MIDIBank       = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);          MIDIBank       = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);
1046    
1047          pRegions   = NULL;          pRegions = NULL;
1048      }      }
1049    
1050      Region* Instrument::GetFirstRegion() {      Region* Instrument::GetFirstRegion() {
# Line 363  namespace DLS { Line 1061  namespace DLS {
1061      }      }
1062    
1063      void Instrument::LoadRegions() {      void Instrument::LoadRegions() {
1064            if (!pRegions) pRegions = new RegionList;
1065          RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);          RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1066          if (!lrgn) throw DLS::Exception("Mandatory chunks in <ins > chunk not found.");          if (lrgn) {
1067          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
1068          RIFF::List* rgn = lrgn->GetFirstSubList();              RIFF::List* rgn = lrgn->GetFirstSubList();
1069          while (rgn) {              while (rgn) {
1070              if (rgn->GetListType() == regionCkType) {                  if (rgn->GetListType() == regionCkType) {
1071                  if (!pRegions) pRegions = new RegionList;                      pRegions->push_back(new Region(this, rgn));
1072                  pRegions->push_back(new Region(this, rgn));                  }
1073                    rgn = lrgn->GetNextSubList();
1074              }              }
             rgn = lrgn->GetNextSubList();  
1075          }          }
1076      }      }
1077    
1078        Region* Instrument::AddRegion() {
1079            if (!pRegions) LoadRegions();
1080            RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1081            if (!lrgn)  lrgn = pCkInstrument->AddSubList(LIST_TYPE_LRGN);
1082            RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN);
1083            Region* pNewRegion = new Region(this, rgn);
1084            pRegions->push_back(pNewRegion);
1085            Regions = pRegions->size();
1086            return pNewRegion;
1087        }
1088    
1089        void Instrument::MoveRegion(Region* pSrc, Region* pDst) {
1090            RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1091            lrgn->MoveSubChunk(pSrc->pCkRegion, pDst ? pDst->pCkRegion : 0);
1092    
1093            pRegions->remove(pSrc);
1094            RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pDst);
1095            pRegions->insert(iter, pSrc);
1096        }
1097    
1098        void Instrument::DeleteRegion(Region* pRegion) {
1099            if (!pRegions) return;
1100            RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pRegion);
1101            if (iter == pRegions->end()) return;
1102            pRegions->erase(iter);
1103            Regions = pRegions->size();
1104            delete pRegion;
1105        }
1106    
1107        /**
1108         * Apply Instrument with all its Regions to the respective RIFF chunks.
1109         * You have to call File::Save() to make changes persistent.
1110         *
1111         * @throws Exception - on errors
1112         */
1113        void Instrument::UpdateChunks() {
1114            // first update base classes' chunks
1115            Resource::UpdateChunks();
1116            Articulator::UpdateChunks();
1117            // make sure 'insh' chunk exists
1118            RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
1119            if (!insh) insh = pCkInstrument->AddSubChunk(CHUNK_ID_INSH, 12);
1120            uint8_t* pData = (uint8_t*) insh->LoadChunkData();
1121            // update 'insh' chunk
1122            Regions = (pRegions) ? pRegions->size() : 0;
1123            midi_locale_t locale;
1124            locale.instrument = MIDIProgram;
1125            locale.bank       = MIDI_BANK_ENCODE(MIDIBankCoarse, MIDIBankFine);
1126            locale.bank       = (IsDrum) ? locale.bank | DRUM_TYPE_MASK : locale.bank & (~DRUM_TYPE_MASK);
1127            MIDIBank          = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine); // just a sync, when we're at it
1128            store32(&pData[0], Regions);
1129            store32(&pData[4], locale.bank);
1130            store32(&pData[8], locale.instrument);
1131            // update Region's chunks
1132            if (!pRegions) return;
1133            RegionList::iterator iter = pRegions->begin();
1134            RegionList::iterator end  = pRegions->end();
1135            for (; iter != end; ++iter) {
1136                (*iter)->UpdateChunks();
1137            }
1138        }
1139    
1140        /** @brief Destructor.
1141         *
1142         * Removes RIFF chunks associated with this Instrument and frees all
1143         * memory occupied by this instrument.
1144         */
1145      Instrument::~Instrument() {      Instrument::~Instrument() {
1146          if (pRegions) {          if (pRegions) {
1147              RegionList::iterator iter = pRegions->begin();              RegionList::iterator iter = pRegions->begin();
# Line 386  namespace DLS { Line 1152  namespace DLS {
1152              }              }
1153              delete pRegions;              delete pRegions;
1154          }          }
1155            // remove instrument's chunks
1156            RIFF::List* pParent = pCkInstrument->GetParent();
1157            pParent->DeleteSubChunk(pCkInstrument);
1158      }      }
1159    
1160    
# Line 393  namespace DLS { Line 1162  namespace DLS {
1162  // *************** File ***************  // *************** File ***************
1163  // *  // *
1164    
1165        /** @brief Constructor.
1166         *
1167         * Default constructor, use this to create an empty DLS file. You have
1168         * to add samples, instruments and finally call Save() to actually write
1169         * a DLS file.
1170         */
1171        File::File() : Resource(NULL, pRIFF = new RIFF::File(RIFF_TYPE_DLS)) {
1172            pRIFF->SetByteOrder(RIFF::endian_little);
1173            pVersion = new version_t;
1174            pVersion->major   = 0;
1175            pVersion->minor   = 0;
1176            pVersion->release = 0;
1177            pVersion->build   = 0;
1178    
1179            Instruments      = 0;
1180            WavePoolCount    = 0;
1181            pWavePoolTable   = NULL;
1182            pWavePoolTableHi = NULL;
1183            WavePoolHeaderSize = 8;
1184    
1185            pSamples     = NULL;
1186            pInstruments = NULL;
1187    
1188            b64BitWavePoolOffsets = false;
1189        }
1190    
1191        /** @brief Constructor.
1192         *
1193         * Load an existing DLS file.
1194         *
1195         * @param pRIFF - pointer to a RIFF file which is actually the DLS file
1196         *                to load
1197         * @throws Exception if given file is not a DLS file, expected chunks
1198         *                   are missing
1199         */
1200      File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {      File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {
1201          if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");          if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");
1202          this->pRIFF = pRIFF;          this->pRIFF = pRIFF;
# Line 409  namespace DLS { Line 1213  namespace DLS {
1213          Instruments = colh->ReadUint32();          Instruments = colh->ReadUint32();
1214    
1215          RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);          RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1216          if (!ptbl) throw DLS::Exception("Mandatory <ptbl> chunk not found.");          if (!ptbl) { // pool table is missing - this is probably an ".art" file
1217          uint32_t headersize = ptbl->ReadUint32();              WavePoolCount    = 0;
1218          WavePoolCount  = ptbl->ReadUint32();              pWavePoolTable   = NULL;
1219          pWavePoolTable = new uint32_t[WavePoolCount];              pWavePoolTableHi = NULL;
1220          ptbl->SetPos(headersize);              WavePoolHeaderSize = 8;
1221                b64BitWavePoolOffsets = false;
1222          // Check for 64 bit offsets (used in gig v3 files)          } else {
1223          if (ptbl->GetSize() - headersize == WavePoolCount * 8) {              WavePoolHeaderSize = ptbl->ReadUint32();
1224              for (int i = 0 ; i < WavePoolCount ; i++) {              WavePoolCount  = ptbl->ReadUint32();
1225                  // Just ignore the upper bits for now              pWavePoolTable = new uint32_t[WavePoolCount];
1226                  uint32_t upper = ptbl->ReadUint32();              pWavePoolTableHi = new uint32_t[WavePoolCount];
1227                  pWavePoolTable[i] = ptbl->ReadUint32();              ptbl->SetPos(WavePoolHeaderSize);
1228                  if (upper || (pWavePoolTable[i] & 0x80000000))  
1229                      throw DLS::Exception("Files larger than 2 GB not yet supported");              // Check for 64 bit offsets (used in gig v3 files)
1230                b64BitWavePoolOffsets = (ptbl->GetSize() - WavePoolHeaderSize == WavePoolCount * 8);
1231                if (b64BitWavePoolOffsets) {
1232                    for (int i = 0 ; i < WavePoolCount ; i++) {
1233                        pWavePoolTableHi[i] = ptbl->ReadUint32();
1234                        pWavePoolTable[i] = ptbl->ReadUint32();
1235                        if (pWavePoolTable[i] & 0x80000000)
1236                            throw DLS::Exception("Files larger than 2 GB not yet supported");
1237                    }
1238                } else { // conventional 32 bit offsets
1239                    ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));
1240                    for (int i = 0 ; i < WavePoolCount ; i++) pWavePoolTableHi[i] = 0;
1241              }              }
1242          }          }
         else ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));  
1243    
1244          pSamples     = NULL;          pSamples     = NULL;
1245          pInstruments = NULL;          pInstruments = NULL;
         Instruments  = 0;  
1246      }      }
1247    
1248      File::~File() {      File::~File() {
# Line 454  namespace DLS { Line 1267  namespace DLS {
1267          }          }
1268    
1269          if (pWavePoolTable) delete[] pWavePoolTable;          if (pWavePoolTable) delete[] pWavePoolTable;
1270            if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1271          if (pVersion) delete pVersion;          if (pVersion) delete pVersion;
1272            for (std::list<RIFF::File*>::iterator i = ExtensionFiles.begin() ; i != ExtensionFiles.end() ; i++)
1273                delete *i;
1274      }      }
1275    
1276      Sample* File::GetFirstSample() {      Sample* File::GetFirstSample() {
# Line 471  namespace DLS { Line 1287  namespace DLS {
1287      }      }
1288    
1289      void File::LoadSamples() {      void File::LoadSamples() {
1290            if (!pSamples) pSamples = new SampleList;
1291          RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);          RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1292          if (wvpl) {          if (wvpl) {
1293              unsigned long wvplFileOffset = wvpl->GetFilePos();              unsigned long wvplFileOffset = wvpl->GetFilePos();
1294              RIFF::List* wave = wvpl->GetFirstSubList();              RIFF::List* wave = wvpl->GetFirstSubList();
1295              while (wave) {              while (wave) {
1296                  if (wave->GetListType() == LIST_TYPE_WAVE) {                  if (wave->GetListType() == LIST_TYPE_WAVE) {
                     if (!pSamples) pSamples = new SampleList;  
1297                      unsigned long waveFileOffset = wave->GetFilePos();                      unsigned long waveFileOffset = wave->GetFilePos();
1298                      pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));                      pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));
1299                  }                  }
# Line 491  namespace DLS { Line 1307  namespace DLS {
1307                  RIFF::List* wave = dwpl->GetFirstSubList();                  RIFF::List* wave = dwpl->GetFirstSubList();
1308                  while (wave) {                  while (wave) {
1309                      if (wave->GetListType() == LIST_TYPE_WAVE) {                      if (wave->GetListType() == LIST_TYPE_WAVE) {
                         if (!pSamples) pSamples = new SampleList;  
1310                          unsigned long waveFileOffset = wave->GetFilePos();                          unsigned long waveFileOffset = wave->GetFilePos();
1311                          pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));                          pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));
1312                      }                      }
# Line 501  namespace DLS { Line 1316  namespace DLS {
1316          }          }
1317      }      }
1318    
1319        /** @brief Add a new sample.
1320         *
1321         * This will create a new Sample object for the DLS file. You have to
1322         * call Save() to make this persistent to the file.
1323         *
1324         * @returns pointer to new Sample object
1325         */
1326        Sample* File::AddSample() {
1327           if (!pSamples) LoadSamples();
1328           __ensureMandatoryChunksExist();
1329           RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1330           // create new Sample object and its respective 'wave' list chunk
1331           RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);
1332           Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);
1333           pSamples->push_back(pSample);
1334           return pSample;
1335        }
1336    
1337        /** @brief Delete a sample.
1338         *
1339         * This will delete the given Sample object from the DLS file. You have
1340         * to call Save() to make this persistent to the file.
1341         *
1342         * @param pSample - sample to delete
1343         */
1344        void File::DeleteSample(Sample* pSample) {
1345            if (!pSamples) return;
1346            SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), pSample);
1347            if (iter == pSamples->end()) return;
1348            pSamples->erase(iter);
1349            delete pSample;
1350        }
1351    
1352      Instrument* File::GetFirstInstrument() {      Instrument* File::GetFirstInstrument() {
1353          if (!pInstruments) LoadInstruments();          if (!pInstruments) LoadInstruments();
1354          if (!pInstruments) return NULL;          if (!pInstruments) return NULL;
# Line 515  namespace DLS { Line 1363  namespace DLS {
1363      }      }
1364    
1365      void File::LoadInstruments() {      void File::LoadInstruments() {
1366            if (!pInstruments) pInstruments = new InstrumentList;
1367          RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);          RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1368          if (lstInstruments) {          if (lstInstruments) {
1369              RIFF::List* lstInstr = lstInstruments->GetFirstSubList();              RIFF::List* lstInstr = lstInstruments->GetFirstSubList();
1370              while (lstInstr) {              while (lstInstr) {
1371                  if (lstInstr->GetListType() == LIST_TYPE_INS) {                  if (lstInstr->GetListType() == LIST_TYPE_INS) {
                     if (!pInstruments) pInstruments = new InstrumentList;  
1372                      pInstruments->push_back(new Instrument(this, lstInstr));                      pInstruments->push_back(new Instrument(this, lstInstr));
1373                  }                  }
1374                  lstInstr = lstInstruments->GetNextSubList();                  lstInstr = lstInstruments->GetNextSubList();
# Line 528  namespace DLS { Line 1376  namespace DLS {
1376          }          }
1377      }      }
1378    
1379        /** @brief Add a new instrument definition.
1380         *
1381         * This will create a new Instrument object for the DLS file. You have
1382         * to call Save() to make this persistent to the file.
1383         *
1384         * @returns pointer to new Instrument object
1385         */
1386        Instrument* File::AddInstrument() {
1387           if (!pInstruments) LoadInstruments();
1388           __ensureMandatoryChunksExist();
1389           RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1390           RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);
1391           Instrument* pInstrument = new Instrument(this, lstInstr);
1392           pInstruments->push_back(pInstrument);
1393           return pInstrument;
1394        }
1395    
1396        /** @brief Delete an instrument.
1397         *
1398         * This will delete the given Instrument object from the DLS file. You
1399         * have to call Save() to make this persistent to the file.
1400         *
1401         * @param pInstrument - instrument to delete
1402         */
1403        void File::DeleteInstrument(Instrument* pInstrument) {
1404            if (!pInstruments) return;
1405            InstrumentList::iterator iter = find(pInstruments->begin(), pInstruments->end(), pInstrument);
1406            if (iter == pInstruments->end()) return;
1407            pInstruments->erase(iter);
1408            delete pInstrument;
1409        }
1410    
1411        /**
1412         * Apply all the DLS file's current instruments, samples and settings to
1413         * the respective RIFF chunks. You have to call Save() to make changes
1414         * persistent.
1415         *
1416         * @throws Exception - on errors
1417         */
1418        void File::UpdateChunks() {
1419            // first update base class's chunks
1420            Resource::UpdateChunks();
1421    
1422            // if version struct exists, update 'vers' chunk
1423            if (pVersion) {
1424                RIFF::Chunk* ckVersion    = pRIFF->GetSubChunk(CHUNK_ID_VERS);
1425                if (!ckVersion) ckVersion = pRIFF->AddSubChunk(CHUNK_ID_VERS, 8);
1426                uint8_t* pData = (uint8_t*) ckVersion->LoadChunkData();
1427                store16(&pData[0], pVersion->minor);
1428                store16(&pData[2], pVersion->major);
1429                store16(&pData[4], pVersion->build);
1430                store16(&pData[6], pVersion->release);
1431            }
1432    
1433            // update 'colh' chunk
1434            Instruments = (pInstruments) ? pInstruments->size() : 0;
1435            RIFF::Chunk* colh = pRIFF->GetSubChunk(CHUNK_ID_COLH);
1436            if (!colh)   colh = pRIFF->AddSubChunk(CHUNK_ID_COLH, 4);
1437            uint8_t* pData = (uint8_t*) colh->LoadChunkData();
1438            store32(pData, Instruments);
1439    
1440            // update instrument's chunks
1441            if (pInstruments) {
1442                InstrumentList::iterator iter = pInstruments->begin();
1443                InstrumentList::iterator end  = pInstruments->end();
1444                for (; iter != end; ++iter) {
1445                    (*iter)->UpdateChunks();
1446                }
1447            }
1448    
1449            // update 'ptbl' chunk
1450            const int iSamples = (pSamples) ? pSamples->size() : 0;
1451            const int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1452            RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1453            if (!ptbl)   ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/);
1454            const int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples;
1455            ptbl->Resize(iPtblSize);
1456            pData = (uint8_t*) ptbl->LoadChunkData();
1457            WavePoolCount = iSamples;
1458            store32(&pData[4], WavePoolCount);
1459            // we actually update the sample offsets in the pool table when we Save()
1460            memset(&pData[WavePoolHeaderSize], 0, iPtblSize - WavePoolHeaderSize);
1461    
1462            // update sample's chunks
1463            if (pSamples) {
1464                SampleList::iterator iter = pSamples->begin();
1465                SampleList::iterator end  = pSamples->end();
1466                for (; iter != end; ++iter) {
1467                    (*iter)->UpdateChunks();
1468                }
1469            }
1470        }
1471    
1472        /** @brief Save changes to another file.
1473         *
1474         * Make all changes persistent by writing them to another file.
1475         * <b>Caution:</b> this method is optimized for writing to
1476         * <b>another</b> file, do not use it to save the changes to the same
1477         * file! Use Save() (without path argument) in that case instead!
1478         * Ignoring this might result in a corrupted file!
1479         *
1480         * After calling this method, this File object will be associated with
1481         * the new file (given by \a Path) afterwards.
1482         *
1483         * @param Path - path and file name where everything should be written to
1484         */
1485        void File::Save(const String& Path) {
1486            UpdateChunks();
1487            pRIFF->Save(Path);
1488            __UpdateWavePoolTableChunk();
1489        }
1490    
1491        /** @brief Save changes to same file.
1492         *
1493         * Make all changes persistent by writing them to the actual (same)
1494         * file. The file might temporarily grow to a higher size than it will
1495         * have at the end of the saving process.
1496         *
1497         * @throws RIFF::Exception if any kind of IO error occured
1498         * @throws DLS::Exception  if any kind of DLS specific error occured
1499         */
1500        void File::Save() {
1501            UpdateChunks();
1502            pRIFF->Save();
1503            __UpdateWavePoolTableChunk();
1504        }
1505    
1506        /**
1507         * Checks if all (for DLS) mandatory chunks exist, if not they will be
1508         * created. Note that those chunks will not be made persistent until
1509         * Save() was called.
1510         */
1511        void File::__ensureMandatoryChunksExist() {
1512           // enusre 'lins' list chunk exists (mandatory for instrument definitions)
1513           RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1514           if (!lstInstruments) pRIFF->AddSubList(LIST_TYPE_LINS);
1515           // ensure 'ptbl' chunk exists (mandatory for samples)
1516           RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1517           if (!ptbl) {
1518               const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1519               ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, WavePoolHeaderSize + iOffsetSize);
1520           }
1521           // enusre 'wvpl' list chunk exists (mandatory for samples)
1522           RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1523           if (!wvpl) pRIFF->AddSubList(LIST_TYPE_WVPL);
1524        }
1525    
1526        /**
1527         * Updates (persistently) the wave pool table with offsets to all
1528         * currently available samples. <b>Caution:</b> this method assumes the
1529         * 'ptbl' chunk to be already of the correct size and the file to be
1530         * writable, so usually this method is only called after a Save() call.
1531         *
1532         * @throws Exception - if 'ptbl' chunk is too small (should only occur
1533         *                     if there's a bug)
1534         */
1535        void File::__UpdateWavePoolTableChunk() {
1536            __UpdateWavePoolTable();
1537            RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1538            const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1539            // check if 'ptbl' chunk is large enough
1540            WavePoolCount = (pSamples) ? pSamples->size() : 0;
1541            const unsigned long ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount;
1542            if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small");
1543            // save the 'ptbl' chunk's current read/write position
1544            unsigned long ulOriginalPos = ptbl->GetPos();
1545            // update headers
1546            ptbl->SetPos(0);
1547            uint32_t tmp = WavePoolHeaderSize;
1548            ptbl->WriteUint32(&tmp);
1549            tmp = WavePoolCount;
1550            ptbl->WriteUint32(&tmp);
1551            // update offsets
1552            ptbl->SetPos(WavePoolHeaderSize);
1553            if (b64BitWavePoolOffsets) {
1554                for (int i = 0 ; i < WavePoolCount ; i++) {
1555                    tmp = pWavePoolTableHi[i];
1556                    ptbl->WriteUint32(&tmp);
1557                    tmp = pWavePoolTable[i];
1558                    ptbl->WriteUint32(&tmp);
1559                }
1560            } else { // conventional 32 bit offsets
1561                for (int i = 0 ; i < WavePoolCount ; i++) {
1562                    tmp = pWavePoolTable[i];
1563                    ptbl->WriteUint32(&tmp);
1564                }
1565            }
1566            // restore 'ptbl' chunk's original read/write position
1567            ptbl->SetPos(ulOriginalPos);
1568        }
1569    
1570        /**
1571         * Updates the wave pool table with offsets to all currently available
1572         * samples. <b>Caution:</b> this method assumes the 'wvpl' list chunk
1573         * exists already.
1574         */
1575        void File::__UpdateWavePoolTable() {
1576            WavePoolCount = (pSamples) ? pSamples->size() : 0;
1577            // resize wave pool table arrays
1578            if (pWavePoolTable)   delete[] pWavePoolTable;
1579            if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1580            pWavePoolTable   = new uint32_t[WavePoolCount];
1581            pWavePoolTableHi = new uint32_t[WavePoolCount];
1582            if (!pSamples) return;
1583            // update offsets int wave pool table
1584            RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1585            uint64_t wvplFileOffset = wvpl->GetFilePos();
1586            if (b64BitWavePoolOffsets) {
1587                SampleList::iterator iter = pSamples->begin();
1588                SampleList::iterator end  = pSamples->end();
1589                for (int i = 0 ; iter != end ; ++iter, i++) {
1590                    uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1591                    (*iter)->ulWavePoolOffset = _64BitOffset;
1592                    pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32);
1593                    pWavePoolTable[i]   = (uint32_t) _64BitOffset;
1594                }
1595            } else { // conventional 32 bit offsets
1596                SampleList::iterator iter = pSamples->begin();
1597                SampleList::iterator end  = pSamples->end();
1598                for (int i = 0 ; iter != end ; ++iter, i++) {
1599                    uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1600                    (*iter)->ulWavePoolOffset = _64BitOffset;
1601                    pWavePoolTable[i] = (uint32_t) _64BitOffset;
1602                }
1603            }
1604        }
1605    
1606    
1607    
1608  // *************** Exception ***************  // *************** Exception ***************
# Line 540  namespace DLS { Line 1615  namespace DLS {
1615          std::cout << "DLS::Exception: " << Message << std::endl;          std::cout << "DLS::Exception: " << Message << std::endl;
1616      }      }
1617    
1618    
1619    // *************** functions ***************
1620    // *
1621    
1622        /**
1623         * Returns the name of this C++ library. This is usually "libgig" of
1624         * course. This call is equivalent to RIFF::libraryName() and
1625         * gig::libraryName().
1626         */
1627        String libraryName() {
1628            return PACKAGE;
1629        }
1630    
1631        /**
1632         * Returns version of this C++ library. This call is equivalent to
1633         * RIFF::libraryVersion() and gig::libraryVersion().
1634         */
1635        String libraryVersion() {
1636            return VERSION;
1637        }
1638    
1639  } // namespace DLS  } // namespace DLS
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