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Revision 806 - (show annotations) (download) (as text)
Sat Nov 12 19:53:53 2005 UTC (18 years, 3 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 24235 byte(s)
just updated API docu a bit (regarding write support)

1 /***************************************************************************
2 * *
3 * libgig - C++ cross-platform Gigasampler format file loader library *
4 * *
5 * Copyright (C) 2003-2005 by Christian Schoenebeck *
6 * <cuse@users.sourceforge.net> *
7 * *
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 #ifndef __DLS_H__
25 #define __DLS_H__
26
27 #include "RIFF.h"
28
29 #if WORDS_BIGENDIAN
30 # define RIFF_TYPE_DLS 0x444C5320
31 # define LIST_TYPE_INFO 0x494E464F
32 # define LIST_TYPE_WVPL 0x7776706C
33 # define LIST_TYPE_DWPL 0x6477706C ///< Seen on some files instead of a wvpl list chunk.
34 # define LIST_TYPE_WAVE 0x77617665
35 # define LIST_TYPE_LINS 0X6C696E73
36 # define LIST_TYPE_INS 0X696E7320
37 # define LIST_TYPE_LRGN 0x6C72676E
38 # define LIST_TYPE_LART 0x6C617274
39 # define LIST_TYPE_LAR2 0x6C617232
40 # define LIST_TYPE_RGN 0x72676E20
41 # define LIST_TYPE_RGN2 0x72676E32
42 # define CHUNK_ID_IARL 0x4941524C
43 # define CHUNK_ID_IART 0x49415254
44 # define CHUNK_ID_ICMS 0x49434D53
45 # define CHUNK_ID_ICMT 0x49434D54
46 # define CHUNK_ID_ICOP 0x49434F50
47 # define CHUNK_ID_ICRD 0x49435244
48 # define CHUNK_ID_IENG 0x49454E47
49 # define CHUNK_ID_IGNR 0x49474E52
50 # define CHUNK_ID_IKEY 0x494B4559
51 # define CHUNK_ID_IMED 0x494D4544
52 # define CHUNK_ID_INAM 0x494E414D
53 # define CHUNK_ID_IPRD 0x49505244
54 # define CHUNK_ID_ISBJ 0x4953424A
55 # define CHUNK_ID_ISFT 0x49534654
56 # define CHUNK_ID_ISRC 0x49535243
57 # define CHUNK_ID_ISRF 0x49535246
58 # define CHUNK_ID_ITCH 0x49544348
59 # define CHUNK_ID_VERS 0x76657273
60 # define CHUNK_ID_DLID 0x646C6964
61 # define CHUNK_ID_FMT 0x666D7420
62 # define CHUNK_ID_DATA 0x64617461
63 # define CHUNK_ID_INSH 0x696E7368
64 # define CHUNK_ID_RGNH 0x72676E68
65 # define CHUNK_ID_WLNK 0x776C6E6B
66 # define CHUNK_ID_PTBL 0x7074626C
67 # define CHUNK_ID_WSMP 0x77736D70
68 # define CHUNK_ID_COLH 0x636F6C68
69 # define CHUNK_ID_ARTL 0x6172746C
70 # define CHUNK_ID_ART2 0x61727432
71 #else // little endian
72 # define RIFF_TYPE_DLS 0x20534C44
73 # define LIST_TYPE_INFO 0x4F464E49
74 # define LIST_TYPE_WVPL 0x6C707677
75 # define LIST_TYPE_DWPL 0x6C707764 ///< Seen on some files instead of a wvpl list chunk.
76 # define LIST_TYPE_WAVE 0x65766177
77 # define LIST_TYPE_LINS 0X736E696C
78 # define LIST_TYPE_INS 0X20736E69
79 # define LIST_TYPE_LRGN 0x6E67726C
80 # define LIST_TYPE_LART 0x7472616C
81 # define LIST_TYPE_LAR2 0x3272616C
82 # define LIST_TYPE_RGN 0x206E6772
83 # define LIST_TYPE_RGN2 0x326E6772
84 # define CHUNK_ID_IARL 0x4C524149
85 # define CHUNK_ID_IART 0x54524149
86 # define CHUNK_ID_ICMS 0x534D4349
87 # define CHUNK_ID_ICMT 0x544D4349
88 # define CHUNK_ID_ICOP 0x504F4349
89 # define CHUNK_ID_ICRD 0x44524349
90 # define CHUNK_ID_IENG 0x474E4549
91 # define CHUNK_ID_IGNR 0x524E4749
92 # define CHUNK_ID_IKEY 0x59454B49
93 # define CHUNK_ID_IMED 0x44525049
94 # define CHUNK_ID_INAM 0x4D414E49
95 # define CHUNK_ID_IPRD 0x44525049
96 # define CHUNK_ID_ISBJ 0x4A425349
97 # define CHUNK_ID_ISFT 0x54465349
98 # define CHUNK_ID_ISRC 0x43525349
99 # define CHUNK_ID_ISRF 0x46525349
100 # define CHUNK_ID_ITCH 0x48435449
101 # define CHUNK_ID_VERS 0x73726576
102 # define CHUNK_ID_DLID 0x64696C64
103 # define CHUNK_ID_FMT 0x20746D66
104 # define CHUNK_ID_DATA 0x61746164
105 # define CHUNK_ID_INSH 0x68736E69
106 # define CHUNK_ID_RGNH 0x686E6772
107 # define CHUNK_ID_WLNK 0x6B6E6C77
108 # define CHUNK_ID_PTBL 0x6C627470
109 # define CHUNK_ID_WSMP 0x706D7377
110 # define CHUNK_ID_COLH 0x686C6F63
111 # define CHUNK_ID_ARTL 0x6C747261
112 # define CHUNK_ID_ART2 0x32747261
113 #endif // WORDS_BIGENDIAN
114
115 #define WAVE_FORMAT_PCM 0x0001
116
117 //TODO: no support for conditional chunks <cdl> yet
118
119 /** DLS specific classes and definitions */
120 namespace DLS {
121
122 typedef std::string String;
123
124 /** Quadtuple version number ("major.minor.release.build"). */
125 struct version_t {
126 uint16_t minor;
127 uint16_t major;
128 uint16_t build;
129 uint16_t release;
130 };
131
132 /** Every subject of an DLS file and the file itself can have an unique, computer generated ID. */
133 struct dlsid_t {
134 uint32_t ulData1;
135 uint16_t usData2;
136 uint16_t usData3;
137 uint8_t abData[8];
138 };
139
140 /** Connection Sources */
141 typedef enum {
142 // Modulator Sources
143 conn_src_none = 0x0000,
144 conn_src_lfo = 0x0001,
145 conn_src_keyonvelocity = 0x0002,
146 conn_src_keynumber = 0x0003,
147 conn_src_eg1 = 0x0004,
148 conn_src_eg2 = 0x0005,
149 conn_src_pitchwheel = 0x0006,
150 conn_src_polypressure = 0x0007,
151 conn_src_channelpressure = 0x0008,
152 conn_src_vibrato = 0x0009,
153 // MIDI Controller Sources
154 conn_src_cc1 = 0x0081,
155 conn_src_cc7 = 0x0087,
156 conn_src_cc10 = 0x008A,
157 conn_src_cc11 = 0x008B,
158 conn_src_cc91 = 0x00DB,
159 conn_src_cc93 = 0x00DD,
160 // Registered Parameter Numbers
161 conn_src_rpn0 = 0x0100,
162 conn_src_rpn1 = 0x0101,
163 conn_src_rpn2 = 0x0102
164 } conn_src_t;
165
166 /** Connection Destinations */
167 typedef enum {
168 // Generic Destinations
169 conn_dst_none = 0x0000,
170 conn_dst_gain = 0x0001,
171 conn_dst_reserved = 0x0002,
172 conn_dst_pitch = 0x0003,
173 conn_dst_pan = 0x0004,
174 conn_dst_keynumber = 0x0005,
175 // Channel Output Destinations
176 conn_dst_left = 0x0010,
177 conn_dst_right = 0x0011,
178 conn_dst_center = 0x0012,
179 conn_dst_lfe_channel = 0x0013,
180 conn_dst_leftrear = 0x0014,
181 conn_dst_rightrear = 0x0015,
182 conn_dst_chorus = 0x0080,
183 conn_dst_reverb = 0x0081,
184 // Modulator LFO Destinations
185 conn_dst_lfo_frequency = 0x0104,
186 conn_dst_lfo_startdelay = 0x0105,
187 // Vibrato LFO Destinations
188 conn_dst_vib_frequency = 0x0114,
189 conn_dst_vib_startdelay = 0x0115,
190 // EG Destinations
191 conn_dst_eg1_attacktime = 0x0206,
192 conn_dst_eg1_decaytime = 0x0207,
193 conn_dst_eg1_reserved = 0x0208,
194 conn_dst_eg1_releasetime = 0x0209,
195 conn_dst_eg1_sustainlevel = 0x020A,
196 conn_dst_eg1_delaytime = 0x020B,
197 conn_dst_eg1_holdtime = 0x020C,
198 conn_dst_eg1_shutdowntime = 0x020D,
199 conn_dst_eg2_attacktime = 0x030A,
200 conn_dst_eg2_decaytime = 0x030B,
201 conn_dst_eg2_reserved = 0x030C,
202 conn_dst_eg2_releasetime = 0x030D,
203 conn_dst_eg2_sustainlevel = 0x030E,
204 conn_dst_eg2_delaytime = 0x030F,
205 conn_dst_eg2_holdtime = 0x0310,
206 // Filter Destinations
207 conn_dst_filter_cutoff = 0x0500,
208 conn_dst_filter_q = 0x0501
209 } conn_dst_t;
210
211 /** Connection Transforms */
212 typedef enum {
213 conn_trn_none = 0x0000,
214 conn_trn_concave = 0x0001,
215 conn_trn_convex = 0x0002,
216 conn_trn_switch = 0x0003
217 } conn_trn_t;
218
219 /** Lower and upper limit of a range. */
220 struct range_t {
221 uint16_t low; ///< Low value of range.
222 uint16_t high; ///< High value of range.
223 };
224
225 /** Defines Sample Loop Points. */
226 struct sample_loop_t {
227 uint32_t Size;
228 uint32_t LoopType;
229 uint32_t LoopStart;
230 uint32_t LoopLength;
231 };
232
233 // just symbol prototyping
234 class File;
235 class Instrument;
236 class Region;
237 class Sample;
238
239 /** Defines a connection within the synthesis model. */
240 class Connection {
241 public:
242 conn_src_t Source;
243 conn_trn_t SourceTransform;
244 bool SourceInvert;
245 bool SourceBipolar;
246 conn_src_t Control;
247 conn_trn_t ControlTransform;
248 bool ControlInvert;
249 bool ControlBipolar;
250 conn_dst_t Destination;
251 conn_trn_t DestinationTransform;
252 uint32_t Scale;
253 protected:
254 struct conn_block_t {
255 uint16_t source;
256 uint16_t control;
257 uint16_t destination;
258 uint16_t transform;
259 uint32_t scale;
260 };
261 Connection() {};
262 void Init(conn_block_t* Header);
263 conn_block_t ToConnBlock();
264 virtual ~Connection() {};
265 friend class Articulation;
266 };
267
268 /** Provides access to the defined connections used for the synthesis model. */
269 class Articulation {
270 public:
271 Connection* pConnections; ///< Points to the beginning of a <i>Connection</i> array.
272 uint32_t Connections; ///< Reflects the number of Connections.
273
274 Articulation(RIFF::Chunk* artl);
275 virtual ~Articulation();
276 virtual void UpdateChunks();
277 protected:
278 RIFF::Chunk* pArticulationCk;
279 uint32_t HeaderSize;
280 };
281
282 /** Abstract base class for classes that provide articulation information (thus for <i>Instrument</i> and <i>Region</i> class). */
283 class Articulator {
284 public:
285 Articulator(RIFF::List* ParentList);
286 Articulation* GetFirstArticulation();
287 Articulation* GetNextArticulation();
288 virtual void UpdateChunks();
289 protected:
290 typedef std::list<Articulation*> ArticulationList;
291 RIFF::List* pParentList;
292 ArticulationList* pArticulations;
293 ArticulationList::iterator ArticulationsIterator;
294
295 void LoadArticulations();
296 virtual ~Articulator();
297 };
298
299 /** Optional information for DLS files, instruments, samples, etc. */
300 class Info {
301 public:
302 String Name; ///< <INAM-ck>. Stores the title of the subject of the file, such as, Seattle From Above.
303 String ArchivalLocation; ///< <IARL-ck>. Indicates where the subject of the file is stored.
304 String CreationDate; ///< <ICRD-ck>. Specifies the date the subject of the file was created. List dates in yyyy-mm-dd format.
305 String Comments; ///< <ICMT-ck>. Provides general comments about the file or the subject of the file. Sentences might end with semicolon.
306 String Product; ///< <IPRD-ck>. Specifies the name of the title the file was originally intended for, such as World Ruler V.
307 String Copyright; ///< <ICOP-ck>. Records the copyright information for the file.
308 String Artists; ///< <IART-ck>. Lists the artist of the original subject of the file.
309 String Genre; ///< <IGNR-ck>. Descirbes the original work, such as, Jazz, Classic, Rock, Techno, Rave, etc.
310 String Keywords; ///< <IKEY-ck>. Provides a list of keywords that refer to the file or subject of the file. Keywords are separated with semicolon and blank, e.g., FX; death; murder.
311 String Engineer; ///< <IENG-ck>. Stores the name of the engineer who worked on the file. Multiple engineer names are separated by semicolon and blank, e.g, Smith, John; Adams, Joe.
312 String Technician; ///< <ITCH-ck>. Identifies the technician who sampled the subject file.
313 String Software; ///< <ISFT-ck>. Identifies the name of the sofware package used to create the file.
314 String Medium; ///< <IMED-ck>. Describes the original subject of the file, such as, record, CD, and so forth.
315 String Source; ///< <ISRC-ck>. Identifies the name of the person or organization who supplied the original subject of the file.
316 String SourceForm; ///< <ISRF-ck>. Identifies the original form of the material that was digitized, such as record, sampling CD, TV sound track. This is not neccessarily the same as <i>Medium</i>.
317 String Commissioned; ///< <ICMS-ck>. Lists the name of the person or organization that commissioned the subject of the file, e.g., Pope Julian II.
318
319 Info(RIFF::List* list);
320 virtual void UpdateChunks();
321 private:
322 RIFF::List* pResourceListChunk;
323
324 void LoadString(uint32_t ChunkID, RIFF::List* lstINFO, String& s);
325 void SaveString(uint32_t ChunkID, RIFF::List* lstINFO, const String& s, const String& sDefault);
326 };
327
328 /** Abstract base class which encapsulates data structures which all DLS resources are able to provide. */
329 class Resource {
330 public:
331 Info* pInfo; ///< Points (in any case) to an <i>Info</i> object, providing additional, optional infos and comments.
332 dlsid_t* pDLSID; ///< Points to a <i>dlsid_t</i> structure if the file provided a DLS ID else is <i>NULL</i>.
333
334 Resource* GetParent() { return pParent; };
335 virtual void UpdateChunks();
336 protected:
337 Resource* pParent;
338 RIFF::List* pResourceList;
339
340 Resource(Resource* Parent, RIFF::List* lstResource);
341 virtual ~Resource();
342 };
343
344 /** Abstract base class which provides mandatory informations about sample players in general. */
345 class Sampler {
346 public:
347 uint8_t UnityNote;
348 int16_t FineTune;
349 int32_t Gain;
350 bool NoSampleDepthTruncation;
351 bool NoSampleCompression;
352 uint32_t SampleLoops; ///< Reflects the number of sample loops.
353 sample_loop_t* pSampleLoops; ///< Points to the beginning of a sample loop array, or is NULL if there are no loops defined.
354
355 virtual void UpdateChunks();
356 protected:
357 RIFF::List* pParentList;
358 uint32_t uiHeaderSize;
359 uint32_t SamplerOptions;
360 Sampler(RIFF::List* ParentList);
361 virtual ~Sampler();
362 };
363
364 /** @brief Encapsulates sample waves used for playback.
365 *
366 * In case you created a new sample with File::AddSample(), you should
367 * first update all attributes with the desired meta informations
368 * (amount of channels, bit depth, sample rate, etc.), then call
369 * Resize() with the desired sample size. The latter will create
370 * the mandatory RIFF chunk which will hold the sample wave data.
371 */
372 class Sample : public Resource {
373 public:
374 uint16_t FormatTag; ///< Format ID of the waveform data (should be WAVE_FORMAT_PCM for DLS1 compliant files, this is also the default value if Sample was created with Instrument::AddSample()).
375 uint16_t Channels; ///< Number of channels represented in the waveform data, e.g. 1 for mono, 2 for stereo (defaults to 1=mono if Sample was created with Instrument::AddSample() previously).
376 uint32_t SamplesPerSecond; ///< Sampling rate at which each channel should be played (defaults to 44100 if Sample was created with Instrument::AddSample() previously).
377 uint32_t AverageBytesPerSecond; ///< The average number of bytes per second at which the waveform data should be transferred (Playback software can estimate the buffer size using this value).
378 uint16_t BlockAlign; ///< The block alignment (in bytes) of the waveform data. Playback software needs to process a multiple of <i>BlockAlign</i> bytes of data at a time, so the value of <i>BlockAlign</i> can be used for buffer alignment.
379 uint16_t BitDepth; ///< Size of each sample per channel (only if known sample data format is used, 0 otherwise).
380 unsigned long SamplesTotal; ///< Reflects total number of sample points (only if known sample data format is used, 0 otherwise), do not bother to change this value, it will not be saved.
381 uint FrameSize; ///< Reflects the size (in bytes) of one single sample point (only if known sample data format is used, 0 otherwise). <b>Caution:</b> with the current version of libgig you have to upate this field by yourself whenever you change one of the following fields: Channels, BitDepth ! Ignoring this might lead to undesired behavior when i.e. calling Resize(), SetPos(), Write() or Read().
382
383 void* LoadSampleData();
384 void ReleaseSampleData();
385 unsigned long GetSize();
386 void Resize(int iNewSize);
387 unsigned long SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);
388 unsigned long Read(void* pBuffer, unsigned long SampleCount);
389 unsigned long Write(void* pBuffer, unsigned long SampleCount);
390 virtual void UpdateChunks();
391 protected:
392 RIFF::List* pWaveList;
393 RIFF::Chunk* pCkData;
394 RIFF::Chunk* pCkFormat;
395 unsigned long ulWavePoolOffset; // needed for comparison with the wave pool link table, thus the link to instruments
396
397 Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset);
398 virtual ~Sample();
399 friend class File;
400 friend class Region; // Region has to compare the wave pool offset to get its sample
401 };
402
403 /** Defines <i>Region</i> information of an <i>Instrument</i>. */
404 class Region : public Resource, public Articulator, public Sampler {
405 public:
406 range_t KeyRange;
407 range_t VelocityRange;
408 uint16_t KeyGroup;
409 uint16_t Layer;
410 bool SelfNonExclusive;
411 bool PhaseMaster;
412 uint16_t PhaseGroup;
413 bool MultiChannel;
414 uint32_t Channel;
415
416 Sample* GetSample();
417 void SetSample(Sample* pSample);
418 virtual void UpdateChunks();
419 protected:
420 RIFF::List* pCkRegion;
421 uint32_t WavePoolTableIndex; // index in the wave pool table to the sample wave this region is linked to
422 Sample* pSample; // every region refers to exactly one sample
423 uint16_t FormatOptionFlags;
424 uint16_t WaveLinkOptionFlags;
425
426 Region(Instrument* pInstrument, RIFF::List* rgnList);
427 virtual ~Region();
428 friend class Instrument;
429 };
430
431 /** Provides all neccessary information for the synthesis of a DLS <i>Instrument</i>. */
432 class Instrument : public Resource, public Articulator {
433 public:
434 bool IsDrum; ///< Indicates if the <i>Instrument</i> is a drum type, as they differ in the synthesis model of DLS from melodic instruments.
435 uint16_t MIDIBank; ///< Reflects combination of <i>MIDIBankCoarse</i> and <i>MIDIBankFine</i> (bank 1 - bank 16384). Do not change this value, it will not be saved! Change MIDIBankCoarse and MIDIBankFine instead (we might change that in future).
436 uint8_t MIDIBankCoarse; ///< Reflects the MIDI Bank number for MIDI Control Change 0 (bank 1 - 128).
437 uint8_t MIDIBankFine; ///< Reflects the MIDI Bank number for MIDI Control Change 32 (bank 1 - 128).
438 uint32_t MIDIProgram; ///< Specifies the MIDI Program Change Number this Instrument should be assigned to.
439 uint32_t Regions; ///< Reflects the number of <i>Region</i> defintions this Instrument has.
440
441 Region* GetFirstRegion();
442 Region* GetNextRegion();
443 Region* AddRegion();
444 void DeleteRegion(Region* pRegion);
445 virtual void UpdateChunks();
446 protected:
447 typedef std::list<Region*> RegionList;
448 struct midi_locale_t {
449 uint32_t bank;
450 uint32_t instrument;
451 };
452
453 RIFF::List* pCkInstrument;
454 RegionList* pRegions;
455 RegionList::iterator RegionsIterator;
456
457 Instrument(File* pFile, RIFF::List* insList);
458 void LoadRegions();
459 virtual ~Instrument();
460 friend class File;
461 };
462
463 /** Parses DLS Level 1 and 2 compliant files and provides abstract access to the data. */
464 class File : public Resource {
465 public:
466 version_t* pVersion; ///< Points to a <i>version_t</i> structure if the file provided a version number else is set to <i>NULL</i>.
467 uint32_t Instruments; ///< Reflects the number of available <i>Instrument</i> objects.
468
469 File();
470 File(RIFF::File* pRIFF);
471 Sample* GetFirstSample(); ///< Returns a pointer to the first <i>Sample</i> object of the file, <i>NULL</i> otherwise.
472 Sample* GetNextSample(); ///< Returns a pointer to the next <i>Sample</i> object of the file, <i>NULL</i> otherwise.
473 Sample* AddSample();
474 void DeleteSample(Sample* pSample);
475 Instrument* GetFirstInstrument(); ///< Returns a pointer to the first <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
476 Instrument* GetNextInstrument(); ///< Returns a pointer to the next <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
477 Instrument* AddInstrument();
478 void DeleteInstrument(Instrument* pInstrument);
479 virtual void UpdateChunks();
480 virtual void Save(const String& Path);
481 virtual void Save();
482 virtual ~File();
483 protected:
484 typedef std::list<Sample*> SampleList;
485 typedef std::list<Instrument*> InstrumentList;
486
487 RIFF::File* pRIFF;
488 SampleList* pSamples;
489 SampleList::iterator SamplesIterator;
490 InstrumentList* pInstruments;
491 InstrumentList::iterator InstrumentsIterator;
492 uint32_t WavePoolHeaderSize;
493 uint32_t WavePoolCount;
494 uint32_t* pWavePoolTable;
495 uint32_t* pWavePoolTableHi;
496 bool b64BitWavePoolOffsets;
497
498 void LoadSamples();
499 void LoadInstruments();
500 void __ensureMandatoryChunksExist();
501 friend class Region; // Region has to look in the wave pool table to get its sample
502 private:
503 void __UpdateWavePoolTableChunk();
504 void __UpdateWavePoolTable();
505 };
506
507 /** Will be thrown whenever a DLS specific error occurs while trying to access a DLS File. */
508 class Exception : public RIFF::Exception {
509 public:
510 Exception(String Message);
511 void PrintMessage();
512 };
513
514 String libraryName();
515 String libraryVersion();
516
517 } // namespace DLS
518
519 #endif // __DLS_H__

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