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

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revision 666 by persson, Sun Jun 19 15:18:59 2005 UTC revision 1218 by persson, Fri Jun 1 19:19:28 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) 2003-2005 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  *
# 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->usData1 = uuid.Data2;
445            pDLSID->usData2 = 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                FormatTag              = pCkFormat->ReadUint16();
620                Channels               = pCkFormat->ReadUint16();
621                SamplesPerSecond       = pCkFormat->ReadUint32();
622                AverageBytesPerSecond  = pCkFormat->ReadUint32();
623                BlockAlign             = pCkFormat->ReadUint16();
624                // PCM format specific
625                if (FormatTag == DLS_WAVE_FORMAT_PCM) {
626                    BitDepth     = pCkFormat->ReadUint16();
627                    FrameSize    = (BitDepth / 8) * Channels;
628                } else { // unsupported sample data format
629                    BitDepth     = 0;
630                    FrameSize    = 0;
631                }
632            } else { // 'fmt' chunk missing
633                FormatTag              = DLS_WAVE_FORMAT_PCM;
634                BitDepth               = 16;
635                Channels               = 1;
636                SamplesPerSecond       = 44100;
637                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          // common fields      /** @brief Destructor.
647          FormatTag              = pCkFormat->ReadUint16();       *
648          Channels               = pCkFormat->ReadUint16();       * Removes RIFF chunks associated with this Sample and frees all
649          SamplesPerSecond       = pCkFormat->ReadUint32();       * memory occupied by this sample.
650          AverageBytesPerSecond  = pCkFormat->ReadUint32();       */
651          BlockAlign             = pCkFormat->ReadUint16();      Sample::~Sample() {
652            RIFF::List* pParent = pWaveList->GetParent();
653          // PCM format specific          pParent->DeleteSubChunk(pWaveList);
         if (FormatTag == WAVE_FORMAT_PCM) {  
             BitDepth     = pCkFormat->ReadUint16();  
             FrameSize    = (FormatTag == WAVE_FORMAT_PCM) ? (BitDepth / 8) * Channels  
                                                           : 0;  
             SamplesTotal = (FormatTag == WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize  
                                                           : 0;  
         }  
         else {  
             BitDepth     = 0;  
             FrameSize    = 0;  
             SamplesTotal = 0;  
         }  
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         * Apply Region settings to the respective RIFF chunks. You have to
917         * call File::Save() to make changes persistent.
918         *
919         * @throws Exception - if the Region's sample could not be found
920         */
921        void Region::UpdateChunks() {
922            // make sure 'rgnh' chunk exists
923            RIFF::Chunk* rgnh = pCkRegion->GetSubChunk(CHUNK_ID_RGNH);
924            if (!rgnh) rgnh = pCkRegion->AddSubChunk(CHUNK_ID_RGNH, Layer ? 14 : 12);
925            uint8_t* pData = (uint8_t*) rgnh->LoadChunkData();
926            FormatOptionFlags = (SelfNonExclusive)
927                                    ? FormatOptionFlags | F_RGN_OPTION_SELFNONEXCLUSIVE
928                                    : FormatOptionFlags & (~F_RGN_OPTION_SELFNONEXCLUSIVE);
929            // update 'rgnh' chunk
930            store16(&pData[0], KeyRange.low);
931            store16(&pData[2], KeyRange.high);
932            store16(&pData[4], VelocityRange.low);
933            store16(&pData[6], VelocityRange.high);
934            store16(&pData[8], FormatOptionFlags);
935            store16(&pData[10], KeyGroup);
936            if (rgnh->GetSize() >= 14) store16(&pData[12], Layer);
937    
938            // update chunks of base classes as well (but skip Resource,
939            // as a rgn doesn't seem to have dlid and INFO chunks)
940            Articulator::UpdateChunks();
941            Sampler::UpdateChunks();
942    
943            // make sure 'wlnk' chunk exists
944            RIFF::Chunk* wlnk = pCkRegion->GetSubChunk(CHUNK_ID_WLNK);
945            if (!wlnk) wlnk = pCkRegion->AddSubChunk(CHUNK_ID_WLNK, 12);
946            pData = (uint8_t*) wlnk->LoadChunkData();
947            WaveLinkOptionFlags = (PhaseMaster)
948                                      ? WaveLinkOptionFlags | F_WAVELINK_PHASE_MASTER
949                                      : WaveLinkOptionFlags & (~F_WAVELINK_PHASE_MASTER);
950            WaveLinkOptionFlags = (MultiChannel)
951                                      ? WaveLinkOptionFlags | F_WAVELINK_MULTICHANNEL
952                                      : WaveLinkOptionFlags & (~F_WAVELINK_MULTICHANNEL);
953            // get sample's wave pool table index
954            int index = -1;
955            File* pFile = (File*) GetParent()->GetParent();
956            if (pFile->pSamples) {
957                File::SampleList::iterator iter = pFile->pSamples->begin();
958                File::SampleList::iterator end  = pFile->pSamples->end();
959                for (int i = 0; iter != end; ++iter, i++) {
960                    if (*iter == pSample) {
961                        index = i;
962                        break;
963                    }
964                }
965            }
966            if (index < 0) throw Exception("Could not save Region, could not find Region's sample");
967            WavePoolTableIndex = index;
968            // update 'wlnk' chunk
969            store16(&pData[0], WaveLinkOptionFlags);
970            store16(&pData[2], PhaseGroup);
971            store32(&pData[4], Channel);
972            store32(&pData[8], WavePoolTableIndex);
973        }
974    
975    
976    
977  // *************** Instrument ***************  // *************** Instrument ***************
978  // *  // *
979    
980        /** @brief Constructor.
981         *
982         * Load an existing instrument definition or create a new one. An 'ins'
983         * list chunk must be given to this constructor. In case this 'ins' list
984         * chunk contains a 'insh' chunk, the instrument data fields will be
985         * loaded from there, otherwise default values will be used and the
986         * 'insh' chunk will be created once File::Save() was called.
987         *
988         * @param pFile   - pointer to DLS::File where this instrument is
989         *                  located (or will be located)
990         * @param insList - pointer to 'ins' list chunk which is (or will be)
991         *                  associated with this instrument
992         */
993      Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {      Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {
994          pCkInstrument = insList;          pCkInstrument = insList;
995    
         RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);  
         if (!insh) throw DLS::Exception("Mandatory chunks in <lins> list chunk not found.");  
         Regions = insh->ReadUint32();  
996          midi_locale_t locale;          midi_locale_t locale;
997          insh->Read(&locale, 2, 4);          RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
998            if (insh) {
999                Regions = insh->ReadUint32();
1000                insh->Read(&locale, 2, 4);
1001            } else { // 'insh' chunk missing
1002                Regions = 0;
1003                locale.bank       = 0;
1004                locale.instrument = 0;
1005            }
1006    
1007          MIDIProgram    = locale.instrument;          MIDIProgram    = locale.instrument;
1008          IsDrum         = locale.bank & DRUM_TYPE_MASK;          IsDrum         = locale.bank & DRUM_TYPE_MASK;
1009          MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);          MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);
1010          MIDIBankFine   = (uint8_t) MIDI_BANK_FINE(locale.bank);          MIDIBankFine   = (uint8_t) MIDI_BANK_FINE(locale.bank);
1011          MIDIBank       = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);          MIDIBank       = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);
1012    
1013          pRegions   = NULL;          pRegions = NULL;
1014      }      }
1015    
1016      Region* Instrument::GetFirstRegion() {      Region* Instrument::GetFirstRegion() {
# Line 363  namespace DLS { Line 1027  namespace DLS {
1027      }      }
1028    
1029      void Instrument::LoadRegions() {      void Instrument::LoadRegions() {
1030            if (!pRegions) pRegions = new RegionList;
1031          RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);          RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1032          if (!lrgn) throw DLS::Exception("Mandatory chunks in <ins > chunk not found.");          if (lrgn) {
1033          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
1034          RIFF::List* rgn = lrgn->GetFirstSubList();              RIFF::List* rgn = lrgn->GetFirstSubList();
1035          while (rgn) {              while (rgn) {
1036              if (rgn->GetListType() == regionCkType) {                  if (rgn->GetListType() == regionCkType) {
1037                  if (!pRegions) pRegions = new RegionList;                      pRegions->push_back(new Region(this, rgn));
1038                  pRegions->push_back(new Region(this, rgn));                  }
1039                    rgn = lrgn->GetNextSubList();
1040              }              }
             rgn = lrgn->GetNextSubList();  
1041          }          }
1042      }      }
1043    
1044        Region* Instrument::AddRegion() {
1045            if (!pRegions) LoadRegions();
1046            RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1047            if (!lrgn)  lrgn = pCkInstrument->AddSubList(LIST_TYPE_LRGN);
1048            RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN);
1049            Region* pNewRegion = new Region(this, rgn);
1050            pRegions->push_back(pNewRegion);
1051            Regions = pRegions->size();
1052            return pNewRegion;
1053        }
1054    
1055        void Instrument::MoveRegion(Region* pSrc, Region* pDst) {
1056            RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1057            lrgn->MoveSubChunk(pSrc->pCkRegion, pDst ? pDst->pCkRegion : 0);
1058    
1059            pRegions->remove(pSrc);
1060            RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pDst);
1061            pRegions->insert(iter, pSrc);
1062        }
1063    
1064        void Instrument::DeleteRegion(Region* pRegion) {
1065            if (!pRegions) return;
1066            RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pRegion);
1067            if (iter == pRegions->end()) return;
1068            pRegions->erase(iter);
1069            Regions = pRegions->size();
1070            delete pRegion;
1071        }
1072    
1073        /**
1074         * Apply Instrument with all its Regions to the respective RIFF chunks.
1075         * You have to call File::Save() to make changes persistent.
1076         *
1077         * @throws Exception - on errors
1078         */
1079        void Instrument::UpdateChunks() {
1080            // first update base classes' chunks
1081            Resource::UpdateChunks();
1082            Articulator::UpdateChunks();
1083            // make sure 'insh' chunk exists
1084            RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
1085            if (!insh) insh = pCkInstrument->AddSubChunk(CHUNK_ID_INSH, 12);
1086            uint8_t* pData = (uint8_t*) insh->LoadChunkData();
1087            // update 'insh' chunk
1088            Regions = (pRegions) ? pRegions->size() : 0;
1089            midi_locale_t locale;
1090            locale.instrument = MIDIProgram;
1091            locale.bank       = MIDI_BANK_ENCODE(MIDIBankCoarse, MIDIBankFine);
1092            locale.bank       = (IsDrum) ? locale.bank | DRUM_TYPE_MASK : locale.bank & (~DRUM_TYPE_MASK);
1093            MIDIBank          = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine); // just a sync, when we're at it
1094            store32(&pData[0], Regions);
1095            store32(&pData[4], locale.bank);
1096            store32(&pData[8], locale.instrument);
1097            // update Region's chunks
1098            if (!pRegions) return;
1099            RegionList::iterator iter = pRegions->begin();
1100            RegionList::iterator end  = pRegions->end();
1101            for (; iter != end; ++iter) {
1102                (*iter)->UpdateChunks();
1103            }
1104        }
1105    
1106        /** @brief Destructor.
1107         *
1108         * Removes RIFF chunks associated with this Instrument and frees all
1109         * memory occupied by this instrument.
1110         */
1111      Instrument::~Instrument() {      Instrument::~Instrument() {
1112          if (pRegions) {          if (pRegions) {
1113              RegionList::iterator iter = pRegions->begin();              RegionList::iterator iter = pRegions->begin();
# Line 386  namespace DLS { Line 1118  namespace DLS {
1118              }              }
1119              delete pRegions;              delete pRegions;
1120          }          }
1121            // remove instrument's chunks
1122            RIFF::List* pParent = pCkInstrument->GetParent();
1123            pParent->DeleteSubChunk(pCkInstrument);
1124      }      }
1125    
1126    
# Line 393  namespace DLS { Line 1128  namespace DLS {
1128  // *************** File ***************  // *************** File ***************
1129  // *  // *
1130    
1131        /** @brief Constructor.
1132         *
1133         * Default constructor, use this to create an empty DLS file. You have
1134         * to add samples, instruments and finally call Save() to actually write
1135         * a DLS file.
1136         */
1137        File::File() : Resource(NULL, pRIFF = new RIFF::File(RIFF_TYPE_DLS)) {
1138            pRIFF->SetByteOrder(RIFF::endian_little);
1139            pVersion = new version_t;
1140            pVersion->major   = 0;
1141            pVersion->minor   = 0;
1142            pVersion->release = 0;
1143            pVersion->build   = 0;
1144    
1145            Instruments      = 0;
1146            WavePoolCount    = 0;
1147            pWavePoolTable   = NULL;
1148            pWavePoolTableHi = NULL;
1149            WavePoolHeaderSize = 8;
1150    
1151            pSamples     = NULL;
1152            pInstruments = NULL;
1153    
1154            b64BitWavePoolOffsets = false;
1155        }
1156    
1157        /** @brief Constructor.
1158         *
1159         * Load an existing DLS file.
1160         *
1161         * @param pRIFF - pointer to a RIFF file which is actually the DLS file
1162         *                to load
1163         * @throws Exception if given file is not a DLS file, expected chunks
1164         *                   are missing
1165         */
1166      File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {      File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {
1167          if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");          if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");
1168          this->pRIFF = pRIFF;          this->pRIFF = pRIFF;
# Line 409  namespace DLS { Line 1179  namespace DLS {
1179          Instruments = colh->ReadUint32();          Instruments = colh->ReadUint32();
1180    
1181          RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);          RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1182          if (!ptbl) throw DLS::Exception("Mandatory <ptbl> chunk not found.");          if (!ptbl) { // pool table is missing - this is probably an ".art" file
1183          uint32_t headersize = ptbl->ReadUint32();              WavePoolCount    = 0;
1184          WavePoolCount  = ptbl->ReadUint32();              pWavePoolTable   = NULL;
1185          pWavePoolTable = new uint32_t[WavePoolCount];              pWavePoolTableHi = NULL;
1186          pWavePoolTableHi = new uint32_t[WavePoolCount];              WavePoolHeaderSize = 8;
1187          ptbl->SetPos(headersize);              b64BitWavePoolOffsets = false;
1188            } else {
1189          // Check for 64 bit offsets (used in gig v3 files)              WavePoolHeaderSize = ptbl->ReadUint32();
1190          if (ptbl->GetSize() - headersize == WavePoolCount * 8) {              WavePoolCount  = ptbl->ReadUint32();
1191              for (int i = 0 ; i < WavePoolCount ; i++) {              pWavePoolTable = new uint32_t[WavePoolCount];
1192                  pWavePoolTableHi[i] = ptbl->ReadUint32();              pWavePoolTableHi = new uint32_t[WavePoolCount];
1193                  pWavePoolTable[i] = ptbl->ReadUint32();              ptbl->SetPos(WavePoolHeaderSize);
1194                  if (pWavePoolTable[i] & 0x80000000)  
1195                      throw DLS::Exception("Files larger than 2 GB not yet supported");              // Check for 64 bit offsets (used in gig v3 files)
1196                b64BitWavePoolOffsets = (ptbl->GetSize() - WavePoolHeaderSize == WavePoolCount * 8);
1197                if (b64BitWavePoolOffsets) {
1198                    for (int i = 0 ; i < WavePoolCount ; i++) {
1199                        pWavePoolTableHi[i] = ptbl->ReadUint32();
1200                        pWavePoolTable[i] = ptbl->ReadUint32();
1201                        if (pWavePoolTable[i] & 0x80000000)
1202                            throw DLS::Exception("Files larger than 2 GB not yet supported");
1203                    }
1204                } else { // conventional 32 bit offsets
1205                    ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));
1206                    for (int i = 0 ; i < WavePoolCount ; i++) pWavePoolTableHi[i] = 0;
1207              }              }
1208          }          }
         else {  
             ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));  
             for (int i = 0 ; i < WavePoolCount ; i++) pWavePoolTableHi[i] = 0;  
         }  
1209    
1210          pSamples     = NULL;          pSamples     = NULL;
1211          pInstruments = NULL;          pInstruments = NULL;
# Line 458  namespace DLS { Line 1235  namespace DLS {
1235          if (pWavePoolTable) delete[] pWavePoolTable;          if (pWavePoolTable) delete[] pWavePoolTable;
1236          if (pWavePoolTableHi) delete[] pWavePoolTableHi;          if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1237          if (pVersion) delete pVersion;          if (pVersion) delete pVersion;
1238            for (std::list<RIFF::File*>::iterator i = ExtensionFiles.begin() ; i != ExtensionFiles.end() ; i++)
1239                delete *i;
1240      }      }
1241    
1242      Sample* File::GetFirstSample() {      Sample* File::GetFirstSample() {
# Line 474  namespace DLS { Line 1253  namespace DLS {
1253      }      }
1254    
1255      void File::LoadSamples() {      void File::LoadSamples() {
1256            if (!pSamples) pSamples = new SampleList;
1257          RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);          RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1258          if (wvpl) {          if (wvpl) {
1259              unsigned long wvplFileOffset = wvpl->GetFilePos();              unsigned long wvplFileOffset = wvpl->GetFilePos();
1260              RIFF::List* wave = wvpl->GetFirstSubList();              RIFF::List* wave = wvpl->GetFirstSubList();
1261              while (wave) {              while (wave) {
1262                  if (wave->GetListType() == LIST_TYPE_WAVE) {                  if (wave->GetListType() == LIST_TYPE_WAVE) {
                     if (!pSamples) pSamples = new SampleList;  
1263                      unsigned long waveFileOffset = wave->GetFilePos();                      unsigned long waveFileOffset = wave->GetFilePos();
1264                      pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));                      pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));
1265                  }                  }
# Line 494  namespace DLS { Line 1273  namespace DLS {
1273                  RIFF::List* wave = dwpl->GetFirstSubList();                  RIFF::List* wave = dwpl->GetFirstSubList();
1274                  while (wave) {                  while (wave) {
1275                      if (wave->GetListType() == LIST_TYPE_WAVE) {                      if (wave->GetListType() == LIST_TYPE_WAVE) {
                         if (!pSamples) pSamples = new SampleList;  
1276                          unsigned long waveFileOffset = wave->GetFilePos();                          unsigned long waveFileOffset = wave->GetFilePos();
1277                          pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));                          pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));
1278                      }                      }
# Line 504  namespace DLS { Line 1282  namespace DLS {
1282          }          }
1283      }      }
1284    
1285        /** @brief Add a new sample.
1286         *
1287         * This will create a new Sample object for the DLS file. You have to
1288         * call Save() to make this persistent to the file.
1289         *
1290         * @returns pointer to new Sample object
1291         */
1292        Sample* File::AddSample() {
1293           if (!pSamples) LoadSamples();
1294           __ensureMandatoryChunksExist();
1295           RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1296           // create new Sample object and its respective 'wave' list chunk
1297           RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);
1298           Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);
1299           pSamples->push_back(pSample);
1300           return pSample;
1301        }
1302    
1303        /** @brief Delete a sample.
1304         *
1305         * This will delete the given Sample object from the DLS file. You have
1306         * to call Save() to make this persistent to the file.
1307         *
1308         * @param pSample - sample to delete
1309         */
1310        void File::DeleteSample(Sample* pSample) {
1311            if (!pSamples) return;
1312            SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), pSample);
1313            if (iter == pSamples->end()) return;
1314            pSamples->erase(iter);
1315            delete pSample;
1316        }
1317    
1318      Instrument* File::GetFirstInstrument() {      Instrument* File::GetFirstInstrument() {
1319          if (!pInstruments) LoadInstruments();          if (!pInstruments) LoadInstruments();
1320          if (!pInstruments) return NULL;          if (!pInstruments) return NULL;
# Line 518  namespace DLS { Line 1329  namespace DLS {
1329      }      }
1330    
1331      void File::LoadInstruments() {      void File::LoadInstruments() {
1332            if (!pInstruments) pInstruments = new InstrumentList;
1333          RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);          RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1334          if (lstInstruments) {          if (lstInstruments) {
1335              RIFF::List* lstInstr = lstInstruments->GetFirstSubList();              RIFF::List* lstInstr = lstInstruments->GetFirstSubList();
1336              while (lstInstr) {              while (lstInstr) {
1337                  if (lstInstr->GetListType() == LIST_TYPE_INS) {                  if (lstInstr->GetListType() == LIST_TYPE_INS) {
                     if (!pInstruments) pInstruments = new InstrumentList;  
1338                      pInstruments->push_back(new Instrument(this, lstInstr));                      pInstruments->push_back(new Instrument(this, lstInstr));
1339                  }                  }
1340                  lstInstr = lstInstruments->GetNextSubList();                  lstInstr = lstInstruments->GetNextSubList();
1341              }              }
1342          }          }
1343      }      }
1344    
1345        /** @brief Add a new instrument definition.
1346         *
1347         * This will create a new Instrument object for the DLS file. You have
1348         * to call Save() to make this persistent to the file.
1349         *
1350         * @returns pointer to new Instrument object
1351         */
1352        Instrument* File::AddInstrument() {
1353           if (!pInstruments) LoadInstruments();
1354           __ensureMandatoryChunksExist();
1355           RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1356           RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);
1357           Instrument* pInstrument = new Instrument(this, lstInstr);
1358           pInstruments->push_back(pInstrument);
1359           return pInstrument;
1360        }
1361    
1362        /** @brief Delete an instrument.
1363         *
1364         * This will delete the given Instrument object from the DLS file. You
1365         * have to call Save() to make this persistent to the file.
1366         *
1367         * @param pInstrument - instrument to delete
1368         */
1369        void File::DeleteInstrument(Instrument* pInstrument) {
1370            if (!pInstruments) return;
1371            InstrumentList::iterator iter = find(pInstruments->begin(), pInstruments->end(), pInstrument);
1372            if (iter == pInstruments->end()) return;
1373            pInstruments->erase(iter);
1374            delete pInstrument;
1375        }
1376    
1377        /**
1378         * Apply all the DLS file's current instruments, samples and settings to
1379         * the respective RIFF chunks. You have to call Save() to make changes
1380         * persistent.
1381         *
1382         * @throws Exception - on errors
1383         */
1384        void File::UpdateChunks() {
1385            // first update base class's chunks
1386            Resource::UpdateChunks();
1387    
1388            // if version struct exists, update 'vers' chunk
1389            if (pVersion) {
1390                RIFF::Chunk* ckVersion    = pRIFF->GetSubChunk(CHUNK_ID_VERS);
1391                if (!ckVersion) ckVersion = pRIFF->AddSubChunk(CHUNK_ID_VERS, 8);
1392                uint8_t* pData = (uint8_t*) ckVersion->LoadChunkData();
1393                store16(&pData[0], pVersion->minor);
1394                store16(&pData[2], pVersion->major);
1395                store16(&pData[4], pVersion->build);
1396                store16(&pData[6], pVersion->release);
1397            }
1398    
1399            // update 'colh' chunk
1400            Instruments = (pInstruments) ? pInstruments->size() : 0;
1401            RIFF::Chunk* colh = pRIFF->GetSubChunk(CHUNK_ID_COLH);
1402            if (!colh)   colh = pRIFF->AddSubChunk(CHUNK_ID_COLH, 4);
1403            uint8_t* pData = (uint8_t*) colh->LoadChunkData();
1404            store32(pData, Instruments);
1405    
1406            // update instrument's chunks
1407            if (pInstruments) {
1408                InstrumentList::iterator iter = pInstruments->begin();
1409                InstrumentList::iterator end  = pInstruments->end();
1410                for (; iter != end; ++iter) {
1411                    (*iter)->UpdateChunks();
1412                }
1413            }
1414    
1415            // update 'ptbl' chunk
1416            const int iSamples = (pSamples) ? pSamples->size() : 0;
1417            const int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1418            RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1419            if (!ptbl)   ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/);
1420            const int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples;
1421            ptbl->Resize(iPtblSize);
1422            pData = (uint8_t*) ptbl->LoadChunkData();
1423            WavePoolCount = iSamples;
1424            store32(&pData[4], WavePoolCount);
1425            // we actually update the sample offsets in the pool table when we Save()
1426            memset(&pData[WavePoolHeaderSize], 0, iPtblSize - WavePoolHeaderSize);
1427    
1428            // update sample's chunks
1429            if (pSamples) {
1430                SampleList::iterator iter = pSamples->begin();
1431                SampleList::iterator end  = pSamples->end();
1432                for (; iter != end; ++iter) {
1433                    (*iter)->UpdateChunks();
1434                }
1435            }
1436        }
1437    
1438        /** @brief Save changes to another file.
1439         *
1440         * Make all changes persistent by writing them to another file.
1441         * <b>Caution:</b> this method is optimized for writing to
1442         * <b>another</b> file, do not use it to save the changes to the same
1443         * file! Use Save() (without path argument) in that case instead!
1444         * Ignoring this might result in a corrupted file!
1445         *
1446         * After calling this method, this File object will be associated with
1447         * the new file (given by \a Path) afterwards.
1448         *
1449         * @param Path - path and file name where everything should be written to
1450         */
1451        void File::Save(const String& Path) {
1452            UpdateChunks();
1453            pRIFF->Save(Path);
1454            __UpdateWavePoolTableChunk();
1455        }
1456    
1457        /** @brief Save changes to same file.
1458         *
1459         * Make all changes persistent by writing them to the actual (same)
1460         * file. The file might temporarily grow to a higher size than it will
1461         * have at the end of the saving process.
1462         *
1463         * @throws RIFF::Exception if any kind of IO error occured
1464         * @throws DLS::Exception  if any kind of DLS specific error occured
1465         */
1466        void File::Save() {
1467            UpdateChunks();
1468            pRIFF->Save();
1469            __UpdateWavePoolTableChunk();
1470        }
1471    
1472        /**
1473         * Checks if all (for DLS) mandatory chunks exist, if not they will be
1474         * created. Note that those chunks will not be made persistent until
1475         * Save() was called.
1476         */
1477        void File::__ensureMandatoryChunksExist() {
1478           // enusre 'lins' list chunk exists (mandatory for instrument definitions)
1479           RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1480           if (!lstInstruments) pRIFF->AddSubList(LIST_TYPE_LINS);
1481           // ensure 'ptbl' chunk exists (mandatory for samples)
1482           RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1483           if (!ptbl) {
1484               const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1485               ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, WavePoolHeaderSize + iOffsetSize);
1486           }
1487           // enusre 'wvpl' list chunk exists (mandatory for samples)
1488           RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1489           if (!wvpl) pRIFF->AddSubList(LIST_TYPE_WVPL);
1490        }
1491    
1492        /**
1493         * Updates (persistently) the wave pool table with offsets to all
1494         * currently available samples. <b>Caution:</b> this method assumes the
1495         * 'ptbl' chunk to be already of the correct size and the file to be
1496         * writable, so usually this method is only called after a Save() call.
1497         *
1498         * @throws Exception - if 'ptbl' chunk is too small (should only occur
1499         *                     if there's a bug)
1500         */
1501        void File::__UpdateWavePoolTableChunk() {
1502            __UpdateWavePoolTable();
1503            RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1504            const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1505            // check if 'ptbl' chunk is large enough
1506            WavePoolCount = (pSamples) ? pSamples->size() : 0;
1507            const unsigned long ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount;
1508            if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small");
1509            // save the 'ptbl' chunk's current read/write position
1510            unsigned long ulOriginalPos = ptbl->GetPos();
1511            // update headers
1512            ptbl->SetPos(0);
1513            uint32_t tmp = WavePoolHeaderSize;
1514            ptbl->WriteUint32(&tmp);
1515            tmp = WavePoolCount;
1516            ptbl->WriteUint32(&tmp);
1517            // update offsets
1518            ptbl->SetPos(WavePoolHeaderSize);
1519            if (b64BitWavePoolOffsets) {
1520                for (int i = 0 ; i < WavePoolCount ; i++) {
1521                    tmp = pWavePoolTableHi[i];
1522                    ptbl->WriteUint32(&tmp);
1523                    tmp = pWavePoolTable[i];
1524                    ptbl->WriteUint32(&tmp);
1525                }
1526            } else { // conventional 32 bit offsets
1527                for (int i = 0 ; i < WavePoolCount ; i++) {
1528                    tmp = pWavePoolTable[i];
1529                    ptbl->WriteUint32(&tmp);
1530                }
1531            }
1532            // restore 'ptbl' chunk's original read/write position
1533            ptbl->SetPos(ulOriginalPos);
1534        }
1535    
1536        /**
1537         * Updates the wave pool table with offsets to all currently available
1538         * samples. <b>Caution:</b> this method assumes the 'wvpl' list chunk
1539         * exists already.
1540         */
1541        void File::__UpdateWavePoolTable() {
1542            WavePoolCount = (pSamples) ? pSamples->size() : 0;
1543            // resize wave pool table arrays
1544            if (pWavePoolTable)   delete[] pWavePoolTable;
1545            if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1546            pWavePoolTable   = new uint32_t[WavePoolCount];
1547            pWavePoolTableHi = new uint32_t[WavePoolCount];
1548            if (!pSamples) return;
1549            // update offsets int wave pool table
1550            RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1551            uint64_t wvplFileOffset = wvpl->GetFilePos();
1552            if (b64BitWavePoolOffsets) {
1553                SampleList::iterator iter = pSamples->begin();
1554                SampleList::iterator end  = pSamples->end();
1555                for (int i = 0 ; iter != end ; ++iter, i++) {
1556                    uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1557                    (*iter)->ulWavePoolOffset = _64BitOffset;
1558                    pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32);
1559                    pWavePoolTable[i]   = (uint32_t) _64BitOffset;
1560                }
1561            } else { // conventional 32 bit offsets
1562                SampleList::iterator iter = pSamples->begin();
1563                SampleList::iterator end  = pSamples->end();
1564                for (int i = 0 ; iter != end ; ++iter, i++) {
1565                    uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1566                    (*iter)->ulWavePoolOffset = _64BitOffset;
1567                    pWavePoolTable[i] = (uint32_t) _64BitOffset;
1568                }
1569            }
1570        }
1571    
1572    
1573    
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