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

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Revision 1266 - (hide annotations) (download)
Thu Aug 2 14:12:55 2007 UTC (11 years, 2 months ago) by persson
File size: 64988 byte(s)
* write support fixes: allow regions/dimension regions without mapped
  samples, 3gnl in v3 files now always has 128 entries, several
  parameters where incorrectly saved due to an operator precedence
  mistake
* DeleteSample now removes all references to the deleted sample

1 schoenebeck 2 /***************************************************************************
2     * *
3 schoenebeck 933 * libgig - C++ cross-platform Gigasampler format file access library *
4 schoenebeck 2 * *
5 schoenebeck 1050 * Copyright (C) 2003-2007 by Christian Schoenebeck *
6 schoenebeck 384 * <cuse@users.sourceforge.net> *
7 schoenebeck 2 * *
8     * 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 *
10     * the Free Software Foundation; either version 2 of the License, or *
11     * (at your option) any later version. *
12     * *
13     * This library is distributed in the hope that it will be useful, *
14     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16     * GNU General Public License for more details. *
17     * *
18     * You should have received a copy of the GNU General Public License *
19     * along with this library; if not, write to the Free Software *
20     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21     * MA 02111-1307 USA *
22     ***************************************************************************/
23    
24     #include "DLS.h"
25    
26 schoenebeck 800 #include <time.h>
27    
28 persson 1209 #ifdef __APPLE__
29     #include <CoreFoundation/CFUUID.h>
30     #elif defined(HAVE_UUID_UUID_H)
31     #include <uuid/uuid.h>
32     #endif
33    
34 schoenebeck 800 #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 persson 918 #define DRUM_TYPE_MASK 0x80000000
55 schoenebeck 800
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 schoenebeck 2 namespace DLS {
70    
71     // *************** Connection ***************
72     // *
73    
74     void Connection::Init(conn_block_t* Header) {
75     Source = (conn_src_t) Header->source;
76     Control = (conn_src_t) Header->control;
77     Destination = (conn_dst_t) Header->destination;
78     Scale = Header->scale;
79     SourceTransform = (conn_trn_t) CONN_TRANSFORM_SRC(Header->transform);
80     ControlTransform = (conn_trn_t) CONN_TRANSFORM_CTL(Header->transform);
81     DestinationTransform = (conn_trn_t) CONN_TRANSFORM_DST(Header->transform);
82     SourceInvert = CONN_TRANSFORM_INVERT_SRC(Header->transform);
83     SourceBipolar = CONN_TRANSFORM_BIPOLAR_SRC(Header->transform);
84     ControlInvert = CONN_TRANSFORM_INVERT_CTL(Header->transform);
85     ControlBipolar = CONN_TRANSFORM_BIPOLAR_CTL(Header->transform);
86     }
87    
88 schoenebeck 800 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 schoenebeck 2
104    
105 schoenebeck 800
106 schoenebeck 2 // *************** Articulation ***************
107     // *
108    
109 schoenebeck 800 /** @brief Constructor.
110     *
111     * Expects an 'artl' or 'art2' chunk to be given where the articulation
112     * connections will be read from.
113     *
114     * @param artl - pointer to an 'artl' or 'art2' chunk
115     * @throws Exception if no 'artl' or 'art2' chunk was given
116     */
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 schoenebeck 2 }
123 schoenebeck 800 HeaderSize = artl->ReadUint32();
124     Connections = artl->ReadUint32();
125     artl->SetPos(HeaderSize);
126 schoenebeck 2
127     pConnections = new Connection[Connections];
128     Connection::conn_block_t connblock;
129 schoenebeck 800 for (uint32_t i = 0; i < Connections; i++) {
130     artl->Read(&connblock.source, 1, 2);
131     artl->Read(&connblock.control, 1, 2);
132     artl->Read(&connblock.destination, 1, 2);
133     artl->Read(&connblock.transform, 1, 2);
134     artl->Read(&connblock.scale, 1, 4);
135 schoenebeck 2 pConnections[i].Init(&connblock);
136     }
137     }
138    
139     Articulation::~Articulation() {
140     if (pConnections) delete[] pConnections;
141     }
142    
143 schoenebeck 800 /**
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 persson 1179 store16(&pData[0], HeaderSize);
152     store16(&pData[2], Connections);
153 schoenebeck 800 for (uint32_t i = 0; i < Connections; i++) {
154     Connection::conn_block_t c = pConnections[i].ToConnBlock();
155 persson 1179 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 schoenebeck 800 }
161     }
162 schoenebeck 2
163    
164 schoenebeck 800
165 schoenebeck 2 // *************** Articulator ***************
166     // *
167    
168     Articulator::Articulator(RIFF::List* ParentList) {
169     pParentList = ParentList;
170     pArticulations = NULL;
171     }
172    
173     Articulation* Articulator::GetFirstArticulation() {
174     if (!pArticulations) LoadArticulations();
175     if (!pArticulations) return NULL;
176     ArticulationsIterator = pArticulations->begin();
177     return (ArticulationsIterator != pArticulations->end()) ? *ArticulationsIterator : NULL;
178     }
179    
180     Articulation* Articulator::GetNextArticulation() {
181     if (!pArticulations) return NULL;
182     ArticulationsIterator++;
183     return (ArticulationsIterator != pArticulations->end()) ? *ArticulationsIterator : NULL;
184     }
185    
186     void Articulator::LoadArticulations() {
187     // prefer articulation level 2
188     RIFF::List* lart = pParentList->GetSubList(LIST_TYPE_LAR2);
189     if (!lart) lart = pParentList->GetSubList(LIST_TYPE_LART);
190     if (lart) {
191 schoenebeck 800 uint32_t artCkType = (lart->GetListType() == LIST_TYPE_LAR2) ? CHUNK_ID_ART2
192     : CHUNK_ID_ARTL;
193     RIFF::Chunk* art = lart->GetFirstSubChunk();
194 schoenebeck 2 while (art) {
195 schoenebeck 800 if (art->GetChunkID() == artCkType) {
196 schoenebeck 2 if (!pArticulations) pArticulations = new ArticulationList;
197     pArticulations->push_back(new Articulation(art));
198     }
199 schoenebeck 800 art = lart->GetNextSubChunk();
200 schoenebeck 2 }
201     }
202     }
203    
204     Articulator::~Articulator() {
205     if (pArticulations) {
206     ArticulationList::iterator iter = pArticulations->begin();
207     ArticulationList::iterator end = pArticulations->end();
208     while (iter != end) {
209     delete *iter;
210     iter++;
211     }
212     delete pArticulations;
213     }
214     }
215    
216 schoenebeck 800 /**
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 schoenebeck 804 if (pArticulations) {
222     ArticulationList::iterator iter = pArticulations->begin();
223     ArticulationList::iterator end = pArticulations->end();
224     for (; iter != end; ++iter) {
225     (*iter)->UpdateChunks();
226     }
227 schoenebeck 800 }
228     }
229 schoenebeck 2
230    
231 schoenebeck 800
232 schoenebeck 2 // *************** Info ***************
233     // *
234    
235 schoenebeck 800 /** @brief Constructor.
236     *
237 schoenebeck 929 * Initializes the info strings with values provided by an INFO list chunk.
238 schoenebeck 800 *
239 schoenebeck 929 * @param list - pointer to a list chunk which contains an INFO list chunk
240 schoenebeck 800 */
241 schoenebeck 2 Info::Info(RIFF::List* list) {
242 persson 1180 FixedStringLengths = NULL;
243 schoenebeck 800 pResourceListChunk = list;
244 schoenebeck 2 if (list) {
245     RIFF::List* lstINFO = list->GetSubList(LIST_TYPE_INFO);
246     if (lstINFO) {
247     LoadString(CHUNK_ID_INAM, lstINFO, Name);
248     LoadString(CHUNK_ID_IARL, lstINFO, ArchivalLocation);
249     LoadString(CHUNK_ID_ICRD, lstINFO, CreationDate);
250     LoadString(CHUNK_ID_ICMT, lstINFO, Comments);
251     LoadString(CHUNK_ID_IPRD, lstINFO, Product);
252     LoadString(CHUNK_ID_ICOP, lstINFO, Copyright);
253     LoadString(CHUNK_ID_IART, lstINFO, Artists);
254     LoadString(CHUNK_ID_IGNR, lstINFO, Genre);
255     LoadString(CHUNK_ID_IKEY, lstINFO, Keywords);
256     LoadString(CHUNK_ID_IENG, lstINFO, Engineer);
257     LoadString(CHUNK_ID_ITCH, lstINFO, Technician);
258     LoadString(CHUNK_ID_ISFT, lstINFO, Software);
259     LoadString(CHUNK_ID_IMED, lstINFO, Medium);
260     LoadString(CHUNK_ID_ISRC, lstINFO, Source);
261     LoadString(CHUNK_ID_ISRF, lstINFO, SourceForm);
262     LoadString(CHUNK_ID_ICMS, lstINFO, Commissioned);
263 persson 928 LoadString(CHUNK_ID_ISBJ, lstINFO, Subject);
264 schoenebeck 2 }
265     }
266     }
267    
268 schoenebeck 823 Info::~Info() {
269     }
270    
271 schoenebeck 800 /** @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 schoenebeck 929 ::LoadString(ck, s); // function from helper.h
279 schoenebeck 800 }
280 schoenebeck 2
281 schoenebeck 800 /** @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 schoenebeck 804 * 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 schoenebeck 800 *
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 persson 1180 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 persson 1209 break;
303 persson 1180 }
304     }
305     }
306 schoenebeck 800 RIFF::Chunk* ck = lstINFO->GetSubChunk(ChunkID);
307 persson 1180 ::SaveString(ChunkID, ck, lstINFO, s, sDefault, size != 0, size); // function from helper.h
308 schoenebeck 800 }
309 schoenebeck 2
310 schoenebeck 800 /** @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 persson 918 String defaultName = "";
322     String defaultCreationDate = "";
323     String defaultSoftware = "";
324     String defaultComments = "";
325 schoenebeck 800
326 persson 918 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 schoenebeck 800 // save values
351 persson 918
352 persson 1180 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 schoenebeck 800 }
370    
371    
372    
373 schoenebeck 2 // *************** Resource ***************
374     // *
375    
376 schoenebeck 800 /** @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 schoenebeck 2 Resource::Resource(Resource* Parent, RIFF::List* lstResource) {
386     pParent = Parent;
387 schoenebeck 800 pResourceList = lstResource;
388 schoenebeck 2
389     pInfo = new Info(lstResource);
390    
391     RIFF::Chunk* ckDLSID = lstResource->GetSubChunk(CHUNK_ID_DLID);
392     if (ckDLSID) {
393     pDLSID = new dlsid_t;
394 schoenebeck 11 ckDLSID->Read(&pDLSID->ulData1, 1, 4);
395     ckDLSID->Read(&pDLSID->usData2, 1, 2);
396     ckDLSID->Read(&pDLSID->usData3, 1, 2);
397     ckDLSID->Read(pDLSID->abData, 8, 1);
398 schoenebeck 2 }
399     else pDLSID = NULL;
400     }
401    
402     Resource::~Resource() {
403     if (pDLSID) delete pDLSID;
404     if (pInfo) delete pInfo;
405     }
406    
407 schoenebeck 800 /** @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 persson 1209
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 schoenebeck 800 }
430 schoenebeck 2
431 persson 1209 /**
432     * Generates a new DLSID for the resource.
433     */
434     void Resource::GenerateDLSID() {
435     #if defined(WIN32) || defined(__APPLE__) || defined(HAVE_UUID_GENERATE)
436 schoenebeck 2
437 persson 1209 if (!pDLSID) pDLSID = new dlsid_t;
438 schoenebeck 800
439 persson 1209 #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 schoenebeck 2 // *************** Sampler ***************
477     // *
478    
479     Sampler::Sampler(RIFF::List* ParentList) {
480 schoenebeck 800 pParentList = ParentList;
481 schoenebeck 2 RIFF::Chunk* wsmp = ParentList->GetSubChunk(CHUNK_ID_WSMP);
482 schoenebeck 800 if (wsmp) {
483     uiHeaderSize = wsmp->ReadUint32();
484     UnityNote = wsmp->ReadUint16();
485     FineTune = wsmp->ReadInt16();
486     Gain = wsmp->ReadInt32();
487     SamplerOptions = wsmp->ReadUint32();
488     SampleLoops = wsmp->ReadUint32();
489     } else { // 'wsmp' chunk missing
490     uiHeaderSize = 0;
491 persson 1218 UnityNote = 60;
492 schoenebeck 800 FineTune = 0; // +- 0 cents
493     Gain = 0; // 0 dB
494     SamplerOptions = F_WSMP_NO_COMPRESSION;
495     SampleLoops = 0;
496     }
497 schoenebeck 2 NoSampleDepthTruncation = SamplerOptions & F_WSMP_NO_TRUNCATION;
498     NoSampleCompression = SamplerOptions & F_WSMP_NO_COMPRESSION;
499     pSampleLoops = (SampleLoops) ? new sample_loop_t[SampleLoops] : NULL;
500 schoenebeck 800 if (SampleLoops) {
501     wsmp->SetPos(uiHeaderSize);
502     for (uint32_t i = 0; i < SampleLoops; i++) {
503     wsmp->Read(pSampleLoops + i, 4, 4);
504     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 schoenebeck 2 }
508     }
509     }
510    
511     Sampler::~Sampler() {
512     if (pSampleLoops) delete[] pSampleLoops;
513     }
514    
515 schoenebeck 800 /**
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 persson 1179 store32(&pData[0], uiHeaderSize);
529 schoenebeck 800 // 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 persson 1179 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 schoenebeck 800 // update loop definitions
540     for (uint32_t i = 0; i < SampleLoops; i++) {
541     //FIXME: this does not handle extended loop structs correctly
542 persson 1179 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 schoenebeck 800 }
547     }
548 schoenebeck 2
549 schoenebeck 1154 /**
550     * Adds a new sample loop with the provided loop definition.
551     *
552 schoenebeck 1194 * @param pLoopDef - points to a loop definition that is to be copied
553 schoenebeck 1154 */
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 schoenebeck 1155 // auto correct size field
563     pNewLoops[SampleLoops].Size = sizeof(DLS::sample_loop_t);
564 schoenebeck 1154 // free the old array and update the member variables
565     if (SampleLoops) delete[] pSampleLoops;
566     pSampleLoops = pNewLoops;
567     SampleLoops++;
568     }
569 schoenebeck 2
570 schoenebeck 1154 /**
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 schoenebeck 800
592 schoenebeck 1154
593    
594 schoenebeck 2 // *************** Sample ***************
595     // *
596    
597 schoenebeck 800 /** @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 schoenebeck 2 Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset) : Resource(pFile, waveList) {
613 schoenebeck 800 pWaveList = waveList;
614 schoenebeck 2 ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE;
615     pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT);
616     pCkData = waveList->GetSubChunk(CHUNK_ID_DATA);
617 schoenebeck 800 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 schoenebeck 1050 if (FormatTag == DLS_WAVE_FORMAT_PCM) {
626 schoenebeck 800 BitDepth = pCkFormat->ReadUint16();
627 persson 928 FrameSize = (BitDepth / 8) * Channels;
628 schoenebeck 800 } else { // unsupported sample data format
629     BitDepth = 0;
630     FrameSize = 0;
631     }
632     } else { // 'fmt' chunk missing
633 schoenebeck 1050 FormatTag = DLS_WAVE_FORMAT_PCM;
634 schoenebeck 800 BitDepth = 16;
635     Channels = 1;
636     SamplesPerSecond = 44100;
637     AverageBytesPerSecond = (BitDepth / 8) * SamplesPerSecond * Channels;
638     FrameSize = (BitDepth / 8) * Channels;
639     BlockAlign = FrameSize;
640 schoenebeck 2 }
641 schoenebeck 1050 SamplesTotal = (pCkData) ? (FormatTag == DLS_WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize
642     : 0
643 schoenebeck 800 : 0;
644 schoenebeck 2 }
645    
646 schoenebeck 800 /** @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 schoenebeck 2 void* Sample::LoadSampleData() {
683 schoenebeck 800 return (pCkData) ? pCkData->LoadChunkData() : NULL;
684 schoenebeck 2 }
685    
686 schoenebeck 800 /** @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 schoenebeck 2 void Sample::ReleaseSampleData() {
692 schoenebeck 800 if (pCkData) pCkData->ReleaseChunkData();
693 schoenebeck 2 }
694    
695 schoenebeck 800 /** @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 schoenebeck 1050 * @returns number of sample points or 0 if FormatTag != DLS_WAVE_FORMAT_PCM
703 schoenebeck 800 * @see FrameSize, FormatTag
704     */
705     unsigned long Sample::GetSize() {
706 schoenebeck 1050 if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0;
707 schoenebeck 800 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 schoenebeck 1050 * 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 schoenebeck 800 * other formats will fail!
731     *
732     * @param iNewSize - new sample wave data size in sample points (must be
733     * greater than zero)
734 schoenebeck 1050 * @throws Excecption if FormatTag != DLS_WAVE_FORMAT_PCM
735 schoenebeck 800 * @throws Exception if \a iNewSize is less than 1
736     * @see File::Save(), FrameSize, FormatTag
737     */
738     void Sample::Resize(int iNewSize) {
739 schoenebeck 1050 if (FormatTag != DLS_WAVE_FORMAT_PCM) throw Exception("Sample's format is not DLS_WAVE_FORMAT_PCM");
740 schoenebeck 800 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 schoenebeck 2 /**
748     * Sets the position within the sample (in sample points, not in
749     * bytes). Use this method and <i>Read()</i> if you don't want to load
750     * the sample into RAM, thus for disk streaming.
751     *
752 schoenebeck 1050 * 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 schoenebeck 800 * with other formats will fail!
755     *
756 schoenebeck 2 * @param SampleCount number of sample points
757     * @param Whence to which relation \a SampleCount refers to
758 schoenebeck 800 * @returns new position within the sample, 0 if
759 schoenebeck 1050 * FormatTag != DLS_WAVE_FORMAT_PCM
760 schoenebeck 800 * @throws Exception if no data RIFF chunk was created for the sample yet
761     * @see FrameSize, FormatTag
762 schoenebeck 2 */
763     unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) {
764 schoenebeck 1050 if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
765 schoenebeck 800 if (!pCkData) throw Exception("No data chunk created for sample yet, call Sample::Resize() to create one");
766 schoenebeck 2 unsigned long orderedBytes = SampleCount * FrameSize;
767     unsigned long result = pCkData->SetPos(orderedBytes, Whence);
768     return (result == orderedBytes) ? SampleCount
769     : result / FrameSize;
770     }
771    
772     /**
773     * Reads \a SampleCount number of sample points from the current
774     * position into the buffer pointed by \a pBuffer and increments the
775     * position within the sample. Use this method and <i>SetPos()</i> if you
776     * don't want to load the sample into RAM, thus for disk streaming.
777     *
778     * @param pBuffer destination buffer
779     * @param SampleCount number of sample points to read
780     */
781     unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) {
782 schoenebeck 1050 if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
783 schoenebeck 11 return pCkData->Read(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction?
784 schoenebeck 2 }
785    
786 schoenebeck 800 /** @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 schoenebeck 1050 if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format
803 schoenebeck 800 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 schoenebeck 2
807 schoenebeck 800 /**
808     * Apply sample and its settings to the respective RIFF chunks. You have
809     * to call File::Save() to make changes persistent.
810     *
811 schoenebeck 1050 * @throws Exception if FormatTag != DLS_WAVE_FORMAT_PCM or no sample data
812 schoenebeck 800 * was provided yet
813     */
814     void Sample::UpdateChunks() {
815 schoenebeck 1050 if (FormatTag != DLS_WAVE_FORMAT_PCM)
816 schoenebeck 800 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 persson 1179 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 schoenebeck 800 }
834 schoenebeck 2
835 schoenebeck 800
836    
837 schoenebeck 2 // *************** Region ***************
838     // *
839    
840     Region::Region(Instrument* pInstrument, RIFF::List* rgnList) : Resource(pInstrument, rgnList), Articulator(rgnList), Sampler(rgnList) {
841     pCkRegion = rgnList;
842    
843 schoenebeck 800 // articulation informations
844 schoenebeck 2 RIFF::Chunk* rgnh = rgnList->GetSubChunk(CHUNK_ID_RGNH);
845 schoenebeck 800 if (rgnh) {
846     rgnh->Read(&KeyRange, 2, 2);
847     rgnh->Read(&VelocityRange, 2, 2);
848     FormatOptionFlags = rgnh->ReadUint16();
849     KeyGroup = rgnh->ReadUint16();
850     // Layer is optional
851     if (rgnh->RemainingBytes() >= sizeof(uint16_t)) {
852     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 schoenebeck 2 }
863 schoenebeck 800 SelfNonExclusive = FormatOptionFlags & F_RGN_OPTION_SELFNONEXCLUSIVE;
864 schoenebeck 2
865 schoenebeck 800 // sample informations
866 schoenebeck 2 RIFF::Chunk* wlnk = rgnList->GetSubChunk(CHUNK_ID_WLNK);
867 schoenebeck 800 if (wlnk) {
868     WaveLinkOptionFlags = wlnk->ReadUint16();
869     PhaseGroup = wlnk->ReadUint16();
870     Channel = wlnk->ReadUint32();
871     WavePoolTableIndex = wlnk->ReadUint32();
872     } 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 schoenebeck 2
881     pSample = NULL;
882     }
883    
884 schoenebeck 800 /** @brief Destructor.
885     *
886     * Removes RIFF chunks associated with this Region.
887     */
888 schoenebeck 2 Region::~Region() {
889 schoenebeck 800 RIFF::List* pParent = pCkRegion->GetParent();
890     pParent->DeleteSubChunk(pCkRegion);
891 schoenebeck 2 }
892    
893     Sample* Region::GetSample() {
894     if (pSample) return pSample;
895     File* file = (File*) GetParent()->GetParent();
896     unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex];
897     Sample* sample = file->GetFirstSample();
898     while (sample) {
899     if (sample->ulWavePoolOffset == soughtoffset) return (pSample = sample);
900     sample = file->GetNextSample();
901     }
902     return NULL;
903     }
904    
905 schoenebeck 800 /**
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 schoenebeck 2
915 schoenebeck 800 /**
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 persson 918 if (!rgnh) rgnh = pCkRegion->AddSubChunk(CHUNK_ID_RGNH, Layer ? 14 : 12);
925 schoenebeck 800 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 persson 1179 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 schoenebeck 2
938 persson 918 // update chunks of base classes as well (but skip Resource,
939     // as a rgn doesn't seem to have dlid and INFO chunks)
940 schoenebeck 800 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 schoenebeck 804 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 schoenebeck 800 }
965     }
966     WavePoolTableIndex = index;
967     // update 'wlnk' chunk
968 persson 1179 store16(&pData[0], WaveLinkOptionFlags);
969     store16(&pData[2], PhaseGroup);
970     store32(&pData[4], Channel);
971     store32(&pData[8], WavePoolTableIndex);
972 schoenebeck 800 }
973    
974    
975    
976 schoenebeck 2 // *************** Instrument ***************
977     // *
978    
979 schoenebeck 800 /** @brief Constructor.
980     *
981     * Load an existing instrument definition or create a new one. An 'ins'
982     * list chunk must be given to this constructor. In case this 'ins' list
983     * chunk contains a 'insh' chunk, the instrument data fields will be
984     * loaded from there, otherwise default values will be used and the
985     * 'insh' chunk will be created once File::Save() was called.
986     *
987     * @param pFile - pointer to DLS::File where this instrument is
988     * located (or will be located)
989     * @param insList - pointer to 'ins' list chunk which is (or will be)
990     * associated with this instrument
991     */
992 schoenebeck 2 Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) {
993     pCkInstrument = insList;
994    
995 schoenebeck 800 midi_locale_t locale;
996 schoenebeck 2 RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
997 schoenebeck 800 if (insh) {
998     Regions = insh->ReadUint32();
999     insh->Read(&locale, 2, 4);
1000     } else { // 'insh' chunk missing
1001     Regions = 0;
1002     locale.bank = 0;
1003     locale.instrument = 0;
1004     }
1005    
1006 schoenebeck 2 MIDIProgram = locale.instrument;
1007     IsDrum = locale.bank & DRUM_TYPE_MASK;
1008     MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank);
1009     MIDIBankFine = (uint8_t) MIDI_BANK_FINE(locale.bank);
1010     MIDIBank = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine);
1011    
1012 schoenebeck 800 pRegions = NULL;
1013 schoenebeck 2 }
1014    
1015     Region* Instrument::GetFirstRegion() {
1016     if (!pRegions) LoadRegions();
1017     if (!pRegions) return NULL;
1018     RegionsIterator = pRegions->begin();
1019     return (RegionsIterator != pRegions->end()) ? *RegionsIterator : NULL;
1020     }
1021    
1022     Region* Instrument::GetNextRegion() {
1023     if (!pRegions) return NULL;
1024     RegionsIterator++;
1025     return (RegionsIterator != pRegions->end()) ? *RegionsIterator : NULL;
1026     }
1027    
1028     void Instrument::LoadRegions() {
1029 schoenebeck 823 if (!pRegions) pRegions = new RegionList;
1030 schoenebeck 2 RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1031 schoenebeck 823 if (lrgn) {
1032     uint32_t regionCkType = (lrgn->GetSubList(LIST_TYPE_RGN2)) ? LIST_TYPE_RGN2 : LIST_TYPE_RGN; // prefer regions level 2
1033     RIFF::List* rgn = lrgn->GetFirstSubList();
1034     while (rgn) {
1035     if (rgn->GetListType() == regionCkType) {
1036     pRegions->push_back(new Region(this, rgn));
1037     }
1038     rgn = lrgn->GetNextSubList();
1039 schoenebeck 2 }
1040     }
1041     }
1042    
1043 schoenebeck 800 Region* Instrument::AddRegion() {
1044 schoenebeck 823 if (!pRegions) LoadRegions();
1045 schoenebeck 800 RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1046     if (!lrgn) lrgn = pCkInstrument->AddSubList(LIST_TYPE_LRGN);
1047     RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN);
1048     Region* pNewRegion = new Region(this, rgn);
1049     pRegions->push_back(pNewRegion);
1050 schoenebeck 823 Regions = pRegions->size();
1051 schoenebeck 800 return pNewRegion;
1052     }
1053    
1054 persson 1102 void Instrument::MoveRegion(Region* pSrc, Region* pDst) {
1055     RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN);
1056     lrgn->MoveSubChunk(pSrc->pCkRegion, pDst ? pDst->pCkRegion : 0);
1057    
1058     pRegions->remove(pSrc);
1059     RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pDst);
1060     pRegions->insert(iter, pSrc);
1061     }
1062    
1063 schoenebeck 800 void Instrument::DeleteRegion(Region* pRegion) {
1064 schoenebeck 802 if (!pRegions) return;
1065 schoenebeck 800 RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pRegion);
1066     if (iter == pRegions->end()) return;
1067     pRegions->erase(iter);
1068 schoenebeck 823 Regions = pRegions->size();
1069 schoenebeck 800 delete pRegion;
1070     }
1071    
1072     /**
1073     * Apply Instrument with all its Regions to the respective RIFF chunks.
1074     * You have to call File::Save() to make changes persistent.
1075     *
1076     * @throws Exception - on errors
1077     */
1078     void Instrument::UpdateChunks() {
1079     // first update base classes' chunks
1080     Resource::UpdateChunks();
1081     Articulator::UpdateChunks();
1082     // make sure 'insh' chunk exists
1083     RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH);
1084     if (!insh) insh = pCkInstrument->AddSubChunk(CHUNK_ID_INSH, 12);
1085     uint8_t* pData = (uint8_t*) insh->LoadChunkData();
1086     // update 'insh' chunk
1087 schoenebeck 804 Regions = (pRegions) ? pRegions->size() : 0;
1088 schoenebeck 800 midi_locale_t locale;
1089     locale.instrument = MIDIProgram;
1090     locale.bank = MIDI_BANK_ENCODE(MIDIBankCoarse, MIDIBankFine);
1091     locale.bank = (IsDrum) ? locale.bank | DRUM_TYPE_MASK : locale.bank & (~DRUM_TYPE_MASK);
1092     MIDIBank = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine); // just a sync, when we're at it
1093 persson 1179 store32(&pData[0], Regions);
1094     store32(&pData[4], locale.bank);
1095     store32(&pData[8], locale.instrument);
1096 schoenebeck 800 // update Region's chunks
1097 schoenebeck 804 if (!pRegions) return;
1098 schoenebeck 800 RegionList::iterator iter = pRegions->begin();
1099     RegionList::iterator end = pRegions->end();
1100     for (; iter != end; ++iter) {
1101     (*iter)->UpdateChunks();
1102     }
1103     }
1104    
1105     /** @brief Destructor.
1106     *
1107     * Removes RIFF chunks associated with this Instrument and frees all
1108     * memory occupied by this instrument.
1109     */
1110 schoenebeck 2 Instrument::~Instrument() {
1111     if (pRegions) {
1112     RegionList::iterator iter = pRegions->begin();
1113     RegionList::iterator end = pRegions->end();
1114     while (iter != end) {
1115     delete *iter;
1116     iter++;
1117     }
1118     delete pRegions;
1119     }
1120 schoenebeck 800 // remove instrument's chunks
1121     RIFF::List* pParent = pCkInstrument->GetParent();
1122     pParent->DeleteSubChunk(pCkInstrument);
1123 schoenebeck 2 }
1124    
1125    
1126    
1127     // *************** File ***************
1128     // *
1129    
1130 schoenebeck 800 /** @brief Constructor.
1131     *
1132     * Default constructor, use this to create an empty DLS file. You have
1133     * to add samples, instruments and finally call Save() to actually write
1134     * a DLS file.
1135     */
1136 persson 1184 File::File() : Resource(NULL, pRIFF = new RIFF::File(RIFF_TYPE_DLS)) {
1137     pRIFF->SetByteOrder(RIFF::endian_little);
1138 schoenebeck 800 pVersion = new version_t;
1139     pVersion->major = 0;
1140     pVersion->minor = 0;
1141     pVersion->release = 0;
1142     pVersion->build = 0;
1143    
1144     Instruments = 0;
1145     WavePoolCount = 0;
1146     pWavePoolTable = NULL;
1147     pWavePoolTableHi = NULL;
1148     WavePoolHeaderSize = 8;
1149    
1150     pSamples = NULL;
1151     pInstruments = NULL;
1152    
1153     b64BitWavePoolOffsets = false;
1154     }
1155    
1156     /** @brief Constructor.
1157     *
1158     * Load an existing DLS file.
1159     *
1160     * @param pRIFF - pointer to a RIFF file which is actually the DLS file
1161     * to load
1162     * @throws Exception if given file is not a DLS file, expected chunks
1163     * are missing
1164     */
1165 schoenebeck 2 File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) {
1166     if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object.");
1167     this->pRIFF = pRIFF;
1168    
1169     RIFF::Chunk* ckVersion = pRIFF->GetSubChunk(CHUNK_ID_VERS);
1170     if (ckVersion) {
1171     pVersion = new version_t;
1172 schoenebeck 11 ckVersion->Read(pVersion, 4, 2);
1173 schoenebeck 2 }
1174     else pVersion = NULL;
1175    
1176     RIFF::Chunk* colh = pRIFF->GetSubChunk(CHUNK_ID_COLH);
1177     if (!colh) throw DLS::Exception("Mandatory chunks in RIFF list chunk not found.");
1178     Instruments = colh->ReadUint32();
1179    
1180     RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1181 persson 902 if (!ptbl) { // pool table is missing - this is probably an ".art" file
1182     WavePoolCount = 0;
1183     pWavePoolTable = NULL;
1184     pWavePoolTableHi = NULL;
1185     WavePoolHeaderSize = 8;
1186     b64BitWavePoolOffsets = false;
1187     } else {
1188     WavePoolHeaderSize = ptbl->ReadUint32();
1189     WavePoolCount = ptbl->ReadUint32();
1190     pWavePoolTable = new uint32_t[WavePoolCount];
1191     pWavePoolTableHi = new uint32_t[WavePoolCount];
1192     ptbl->SetPos(WavePoolHeaderSize);
1193 schoenebeck 2
1194 persson 902 // Check for 64 bit offsets (used in gig v3 files)
1195     b64BitWavePoolOffsets = (ptbl->GetSize() - WavePoolHeaderSize == WavePoolCount * 8);
1196     if (b64BitWavePoolOffsets) {
1197     for (int i = 0 ; i < WavePoolCount ; i++) {
1198     pWavePoolTableHi[i] = ptbl->ReadUint32();
1199     pWavePoolTable[i] = ptbl->ReadUint32();
1200     if (pWavePoolTable[i] & 0x80000000)
1201     throw DLS::Exception("Files larger than 2 GB not yet supported");
1202     }
1203     } else { // conventional 32 bit offsets
1204     ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t));
1205     for (int i = 0 ; i < WavePoolCount ; i++) pWavePoolTableHi[i] = 0;
1206 schoenebeck 317 }
1207 persson 666 }
1208 schoenebeck 317
1209 schoenebeck 2 pSamples = NULL;
1210     pInstruments = NULL;
1211     }
1212    
1213     File::~File() {
1214     if (pInstruments) {
1215     InstrumentList::iterator iter = pInstruments->begin();
1216     InstrumentList::iterator end = pInstruments->end();
1217     while (iter != end) {
1218     delete *iter;
1219     iter++;
1220     }
1221     delete pInstruments;
1222     }
1223    
1224     if (pSamples) {
1225     SampleList::iterator iter = pSamples->begin();
1226     SampleList::iterator end = pSamples->end();
1227     while (iter != end) {
1228     delete *iter;
1229     iter++;
1230     }
1231     delete pSamples;
1232     }
1233    
1234     if (pWavePoolTable) delete[] pWavePoolTable;
1235 persson 666 if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1236 schoenebeck 2 if (pVersion) delete pVersion;
1237 persson 834 for (std::list<RIFF::File*>::iterator i = ExtensionFiles.begin() ; i != ExtensionFiles.end() ; i++)
1238     delete *i;
1239 schoenebeck 2 }
1240    
1241     Sample* File::GetFirstSample() {
1242     if (!pSamples) LoadSamples();
1243     if (!pSamples) return NULL;
1244     SamplesIterator = pSamples->begin();
1245     return (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL;
1246     }
1247    
1248     Sample* File::GetNextSample() {
1249     if (!pSamples) return NULL;
1250     SamplesIterator++;
1251     return (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL;
1252     }
1253    
1254     void File::LoadSamples() {
1255 schoenebeck 823 if (!pSamples) pSamples = new SampleList;
1256 schoenebeck 2 RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1257     if (wvpl) {
1258     unsigned long wvplFileOffset = wvpl->GetFilePos();
1259     RIFF::List* wave = wvpl->GetFirstSubList();
1260     while (wave) {
1261     if (wave->GetListType() == LIST_TYPE_WAVE) {
1262     unsigned long waveFileOffset = wave->GetFilePos();
1263     pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset));
1264     }
1265     wave = wvpl->GetNextSubList();
1266     }
1267     }
1268     else { // Seen a dwpl list chunk instead of a wvpl list chunk in some file (officially not DLS compliant)
1269     RIFF::List* dwpl = pRIFF->GetSubList(LIST_TYPE_DWPL);
1270     if (dwpl) {
1271     unsigned long dwplFileOffset = dwpl->GetFilePos();
1272     RIFF::List* wave = dwpl->GetFirstSubList();
1273     while (wave) {
1274     if (wave->GetListType() == LIST_TYPE_WAVE) {
1275     unsigned long waveFileOffset = wave->GetFilePos();
1276     pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset));
1277     }
1278     wave = dwpl->GetNextSubList();
1279     }
1280     }
1281     }
1282     }
1283    
1284 schoenebeck 800 /** @brief Add a new sample.
1285     *
1286     * This will create a new Sample object for the DLS file. You have to
1287     * call Save() to make this persistent to the file.
1288     *
1289     * @returns pointer to new Sample object
1290     */
1291     Sample* File::AddSample() {
1292 schoenebeck 809 if (!pSamples) LoadSamples();
1293 schoenebeck 800 __ensureMandatoryChunksExist();
1294     RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1295     // create new Sample object and its respective 'wave' list chunk
1296     RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE);
1297     Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/);
1298     pSamples->push_back(pSample);
1299     return pSample;
1300     }
1301    
1302     /** @brief Delete a sample.
1303     *
1304     * This will delete the given Sample object from the DLS file. You have
1305     * to call Save() to make this persistent to the file.
1306     *
1307     * @param pSample - sample to delete
1308     */
1309     void File::DeleteSample(Sample* pSample) {
1310 schoenebeck 802 if (!pSamples) return;
1311 schoenebeck 800 SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), pSample);
1312     if (iter == pSamples->end()) return;
1313     pSamples->erase(iter);
1314     delete pSample;
1315     }
1316    
1317 schoenebeck 2 Instrument* File::GetFirstInstrument() {
1318     if (!pInstruments) LoadInstruments();
1319     if (!pInstruments) return NULL;
1320     InstrumentsIterator = pInstruments->begin();
1321     return (InstrumentsIterator != pInstruments->end()) ? *InstrumentsIterator : NULL;
1322     }
1323    
1324     Instrument* File::GetNextInstrument() {
1325     if (!pInstruments) return NULL;
1326     InstrumentsIterator++;
1327     return (InstrumentsIterator != pInstruments->end()) ? *InstrumentsIterator : NULL;
1328     }
1329    
1330     void File::LoadInstruments() {
1331 schoenebeck 823 if (!pInstruments) pInstruments = new InstrumentList;
1332 schoenebeck 2 RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1333     if (lstInstruments) {
1334     RIFF::List* lstInstr = lstInstruments->GetFirstSubList();
1335     while (lstInstr) {
1336     if (lstInstr->GetListType() == LIST_TYPE_INS) {
1337     pInstruments->push_back(new Instrument(this, lstInstr));
1338     }
1339     lstInstr = lstInstruments->GetNextSubList();
1340     }
1341     }
1342     }
1343    
1344 schoenebeck 800 /** @brief Add a new instrument definition.
1345     *
1346     * This will create a new Instrument object for the DLS file. You have
1347     * to call Save() to make this persistent to the file.
1348     *
1349     * @returns pointer to new Instrument object
1350     */
1351     Instrument* File::AddInstrument() {
1352 schoenebeck 809 if (!pInstruments) LoadInstruments();
1353 schoenebeck 800 __ensureMandatoryChunksExist();
1354     RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1355     RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS);
1356     Instrument* pInstrument = new Instrument(this, lstInstr);
1357     pInstruments->push_back(pInstrument);
1358     return pInstrument;
1359     }
1360 schoenebeck 2
1361 schoenebeck 809 /** @brief Delete an instrument.
1362 schoenebeck 800 *
1363     * This will delete the given Instrument object from the DLS file. You
1364     * have to call Save() to make this persistent to the file.
1365     *
1366     * @param pInstrument - instrument to delete
1367     */
1368     void File::DeleteInstrument(Instrument* pInstrument) {
1369 schoenebeck 802 if (!pInstruments) return;
1370 schoenebeck 800 InstrumentList::iterator iter = find(pInstruments->begin(), pInstruments->end(), pInstrument);
1371     if (iter == pInstruments->end()) return;
1372     pInstruments->erase(iter);
1373     delete pInstrument;
1374     }
1375 schoenebeck 2
1376 schoenebeck 800 /**
1377     * Apply all the DLS file's current instruments, samples and settings to
1378     * the respective RIFF chunks. You have to call Save() to make changes
1379     * persistent.
1380     *
1381     * @throws Exception - on errors
1382     */
1383     void File::UpdateChunks() {
1384     // first update base class's chunks
1385     Resource::UpdateChunks();
1386    
1387     // if version struct exists, update 'vers' chunk
1388     if (pVersion) {
1389     RIFF::Chunk* ckVersion = pRIFF->GetSubChunk(CHUNK_ID_VERS);
1390     if (!ckVersion) ckVersion = pRIFF->AddSubChunk(CHUNK_ID_VERS, 8);
1391     uint8_t* pData = (uint8_t*) ckVersion->LoadChunkData();
1392 persson 1179 store16(&pData[0], pVersion->minor);
1393     store16(&pData[2], pVersion->major);
1394     store16(&pData[4], pVersion->build);
1395     store16(&pData[6], pVersion->release);
1396 schoenebeck 800 }
1397    
1398     // update 'colh' chunk
1399     Instruments = (pInstruments) ? pInstruments->size() : 0;
1400     RIFF::Chunk* colh = pRIFF->GetSubChunk(CHUNK_ID_COLH);
1401     if (!colh) colh = pRIFF->AddSubChunk(CHUNK_ID_COLH, 4);
1402     uint8_t* pData = (uint8_t*) colh->LoadChunkData();
1403 persson 1179 store32(pData, Instruments);
1404 schoenebeck 800
1405     // update instrument's chunks
1406     if (pInstruments) {
1407     InstrumentList::iterator iter = pInstruments->begin();
1408     InstrumentList::iterator end = pInstruments->end();
1409     for (; iter != end; ++iter) {
1410     (*iter)->UpdateChunks();
1411     }
1412     }
1413    
1414     // update 'ptbl' chunk
1415     const int iSamples = (pSamples) ? pSamples->size() : 0;
1416     const int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1417     RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1418     if (!ptbl) ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/);
1419     const int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples;
1420     ptbl->Resize(iPtblSize);
1421     pData = (uint8_t*) ptbl->LoadChunkData();
1422     WavePoolCount = iSamples;
1423 persson 1179 store32(&pData[4], WavePoolCount);
1424 schoenebeck 800 // we actually update the sample offsets in the pool table when we Save()
1425     memset(&pData[WavePoolHeaderSize], 0, iPtblSize - WavePoolHeaderSize);
1426    
1427     // update sample's chunks
1428     if (pSamples) {
1429     SampleList::iterator iter = pSamples->begin();
1430     SampleList::iterator end = pSamples->end();
1431     for (; iter != end; ++iter) {
1432     (*iter)->UpdateChunks();
1433     }
1434     }
1435     }
1436    
1437     /** @brief Save changes to another file.
1438     *
1439     * Make all changes persistent by writing them to another file.
1440     * <b>Caution:</b> this method is optimized for writing to
1441     * <b>another</b> file, do not use it to save the changes to the same
1442     * file! Use Save() (without path argument) in that case instead!
1443     * Ignoring this might result in a corrupted file!
1444     *
1445     * After calling this method, this File object will be associated with
1446     * the new file (given by \a Path) afterwards.
1447     *
1448     * @param Path - path and file name where everything should be written to
1449     */
1450     void File::Save(const String& Path) {
1451     UpdateChunks();
1452     pRIFF->Save(Path);
1453     __UpdateWavePoolTableChunk();
1454     }
1455    
1456     /** @brief Save changes to same file.
1457     *
1458     * Make all changes persistent by writing them to the actual (same)
1459     * file. The file might temporarily grow to a higher size than it will
1460     * have at the end of the saving process.
1461     *
1462     * @throws RIFF::Exception if any kind of IO error occured
1463     * @throws DLS::Exception if any kind of DLS specific error occured
1464     */
1465     void File::Save() {
1466     UpdateChunks();
1467     pRIFF->Save();
1468     __UpdateWavePoolTableChunk();
1469     }
1470    
1471     /**
1472     * Checks if all (for DLS) mandatory chunks exist, if not they will be
1473     * created. Note that those chunks will not be made persistent until
1474     * Save() was called.
1475     */
1476     void File::__ensureMandatoryChunksExist() {
1477     // enusre 'lins' list chunk exists (mandatory for instrument definitions)
1478     RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS);
1479     if (!lstInstruments) pRIFF->AddSubList(LIST_TYPE_LINS);
1480     // ensure 'ptbl' chunk exists (mandatory for samples)
1481     RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1482     if (!ptbl) {
1483     const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1484     ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, WavePoolHeaderSize + iOffsetSize);
1485     }
1486     // enusre 'wvpl' list chunk exists (mandatory for samples)
1487     RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1488     if (!wvpl) pRIFF->AddSubList(LIST_TYPE_WVPL);
1489     }
1490    
1491     /**
1492     * Updates (persistently) the wave pool table with offsets to all
1493     * currently available samples. <b>Caution:</b> this method assumes the
1494 schoenebeck 804 * 'ptbl' chunk to be already of the correct size and the file to be
1495     * writable, so usually this method is only called after a Save() call.
1496 schoenebeck 800 *
1497     * @throws Exception - if 'ptbl' chunk is too small (should only occur
1498     * if there's a bug)
1499     */
1500     void File::__UpdateWavePoolTableChunk() {
1501     __UpdateWavePoolTable();
1502     RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL);
1503     const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4;
1504     // check if 'ptbl' chunk is large enough
1505 schoenebeck 802 WavePoolCount = (pSamples) ? pSamples->size() : 0;
1506 schoenebeck 800 const unsigned long ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount;
1507     if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small");
1508 schoenebeck 804 // save the 'ptbl' chunk's current read/write position
1509     unsigned long ulOriginalPos = ptbl->GetPos();
1510 schoenebeck 800 // update headers
1511 schoenebeck 804 ptbl->SetPos(0);
1512 persson 1179 uint32_t tmp = WavePoolHeaderSize;
1513     ptbl->WriteUint32(&tmp);
1514     tmp = WavePoolCount;
1515     ptbl->WriteUint32(&tmp);
1516 schoenebeck 800 // update offsets
1517 schoenebeck 804 ptbl->SetPos(WavePoolHeaderSize);
1518 schoenebeck 800 if (b64BitWavePoolOffsets) {
1519     for (int i = 0 ; i < WavePoolCount ; i++) {
1520 persson 1179 tmp = pWavePoolTableHi[i];
1521     ptbl->WriteUint32(&tmp);
1522     tmp = pWavePoolTable[i];
1523     ptbl->WriteUint32(&tmp);
1524 schoenebeck 800 }
1525     } else { // conventional 32 bit offsets
1526 persson 1179 for (int i = 0 ; i < WavePoolCount ; i++) {
1527     tmp = pWavePoolTable[i];
1528     ptbl->WriteUint32(&tmp);
1529     }
1530 schoenebeck 800 }
1531 schoenebeck 804 // restore 'ptbl' chunk's original read/write position
1532     ptbl->SetPos(ulOriginalPos);
1533 schoenebeck 800 }
1534    
1535     /**
1536     * Updates the wave pool table with offsets to all currently available
1537     * samples. <b>Caution:</b> this method assumes the 'wvpl' list chunk
1538     * exists already.
1539     */
1540     void File::__UpdateWavePoolTable() {
1541 schoenebeck 802 WavePoolCount = (pSamples) ? pSamples->size() : 0;
1542 schoenebeck 800 // resize wave pool table arrays
1543     if (pWavePoolTable) delete[] pWavePoolTable;
1544     if (pWavePoolTableHi) delete[] pWavePoolTableHi;
1545     pWavePoolTable = new uint32_t[WavePoolCount];
1546     pWavePoolTableHi = new uint32_t[WavePoolCount];
1547 schoenebeck 802 if (!pSamples) return;
1548 schoenebeck 800 // update offsets int wave pool table
1549     RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL);
1550     uint64_t wvplFileOffset = wvpl->GetFilePos();
1551     if (b64BitWavePoolOffsets) {
1552     SampleList::iterator iter = pSamples->begin();
1553     SampleList::iterator end = pSamples->end();
1554     for (int i = 0 ; iter != end ; ++iter, i++) {
1555 schoenebeck 804 uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1556 schoenebeck 800 (*iter)->ulWavePoolOffset = _64BitOffset;
1557     pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32);
1558     pWavePoolTable[i] = (uint32_t) _64BitOffset;
1559     }
1560     } else { // conventional 32 bit offsets
1561     SampleList::iterator iter = pSamples->begin();
1562     SampleList::iterator end = pSamples->end();
1563     for (int i = 0 ; iter != end ; ++iter, i++) {
1564 schoenebeck 804 uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE;
1565 schoenebeck 800 (*iter)->ulWavePoolOffset = _64BitOffset;
1566     pWavePoolTable[i] = (uint32_t) _64BitOffset;
1567     }
1568     }
1569     }
1570    
1571    
1572    
1573 schoenebeck 2 // *************** Exception ***************
1574     // *
1575    
1576     Exception::Exception(String Message) : RIFF::Exception(Message) {
1577     }
1578    
1579     void Exception::PrintMessage() {
1580     std::cout << "DLS::Exception: " << Message << std::endl;
1581     }
1582    
1583 schoenebeck 518
1584     // *************** functions ***************
1585     // *
1586    
1587     /**
1588     * Returns the name of this C++ library. This is usually "libgig" of
1589     * course. This call is equivalent to RIFF::libraryName() and
1590     * gig::libraryName().
1591     */
1592     String libraryName() {
1593     return PACKAGE;
1594     }
1595    
1596     /**
1597     * Returns version of this C++ library. This call is equivalent to
1598     * RIFF::libraryVersion() and gig::libraryVersion().
1599     */
1600     String libraryVersion() {
1601     return VERSION;
1602     }
1603    
1604 schoenebeck 2 } // namespace DLS

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