1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
|
/* ************************************************************************** */
/* * For conditions of distribution and use, * */
/* * see copyright notice in libmng.h * */
/* ************************************************************************** */
/* * * */
/* * project : libmng * */
/* * file : libmng_data.h copyright (c) 2000 G.Juyn * */
/* * version : 1.0.2 * */
/* * * */
/* * purpose : main data structure definition * */
/* * * */
/* * author : G.Juyn * */
/* * web : http://www.3-t.com * */
/* * email : mailto:[email protected] * */
/* * * */
/* * comment : Definition of the library main data structure * */
/* * * */
/* * changes : 0.5.1 - 05/04/2000 - G.Juyn * */
/* * - added CRC table to main structure (for thread-safety) * */
/* * 0.5.1 - 05/06/2000 - G.Juyn * */
/* * - added iPLTEentries for checking hIST-length * */
/* * 0.5.1 - 05/08/2000 - G.Juyn * */
/* * - changed palette definition to exported palette-type * */
/* * - removed frozen indicator * */
/* * - added create/write indicators * */
/* * - changed strict-ANSI stuff * */
/* * 0.5.1 - 05/13/2000 - G.Juyn * */
/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
/* * - added TERM animation object pointer (easier reference) * */
/* * - added saved-data structure for SAVE/SEEK processing * */
/* * * */
/* * 0.5.2 - 05/18/2000 - G.Juyn * */
/* * - added fields for JNG support (IJG-based) * */
/* * 0.5.2 - 05/24/2000 - G.Juyn * */
/* * - changed global tRNS definition * */
/* * 0.5.2 - 05/30/2000 - G.Juyn * */
/* * - added delta-image fields * */
/* * 0.5.2 - 06/01/2000 - G.Juyn * */
/* * - added internal delta-image processing callbacks * */
/* * 0.5.2 - 06/02/2000 - G.Juyn * */
/* * - changed SWAP_ENDIAN to BIGENDIAN_SUPPORTED * */
/* * (contributed by Tim Rowley) * */
/* * - added getalphaline callback for RGB8_A8 canvasstyle * */
/* * 0.5.2 - 06/06/2000 - G.Juyn * */
/* * - added parameter for delayed buffer-processing * */
/* * * */
/* * 0.5.3 - 06/16/2000 - G.Juyn * */
/* * - added update-region parms for refresh calback * */
/* * - added Needrefresh parameter * */
/* * 0.5.3 - 06/17/2000 - G.Juyn * */
/* * - added Deltaimmediate parm for faster delta-processing * */
/* * 0.5.3 - 06/21/2000 - G.Juyn * */
/* * - added Speed parameter to facilitate testing * */
/* * - added Imagelevel parameter for processtext callback * */
/* * 0.5.3 - 06/26/2000 - G.Juyn * */
/* * - changed userdata variable to mng_ptr * */
/* * * */
/* * 0.9.1 - 07/07/2000 - G.Juyn * */
/* * - added variables for go_xxxx processing * */
/* * 0.9.1 - 07/08/2000 - G.Juyn * */
/* * - added variables for improved timing support * */
/* * 0.9.1 - 07/15/2000 - G.Juyn * */
/* * - added callbacks for SAVE/SEEK processing * */
/* * - added variable for NEEDSECTIONWAIT breaks * */
/* * - added variable for freeze & reset processing * */
/* * 0.9.1 - 07/17/2000 - G.Juyn * */
/* * - fixed suspension-buffering for 32K+ chunks * */
/* * * */
/* * 0.9.2 - 07/29/2000 - G.Juyn * */
/* * - removed Nextbackxxx fields (no longer used) * */
/* * 0.9.2 - 07/31/2000 - G.Juyn * */
/* * - fixed wrapping of suspension parameters * */
/* * 0.9.2 - 08/04/2000 - G.Juyn * */
/* * - B111096 - fixed large-buffer read-suspension * */
/* * 0.9.2 - 08/05/2000 - G.Juyn * */
/* * - changed file-prefixes * */
/* * * */
/* * 0.9.3 - 08/26/2000 - G.Juyn * */
/* * - added MAGN chunk * */
/* * 0.9.3 - 09/07/2000 - G.Juyn * */
/* * - added support for new filter_types * */
/* * 0.9.3 - 09/10/2000 - G.Juyn * */
/* * - fixed DEFI behavior * */
/* * 0.9.3 - 10/10/2000 - G.Juyn * */
/* * - added support for alpha-depth prediction * */
/* * 0.9.3 - 10/11/2000 - G.Juyn * */
/* * - added support for nEED * */
/* * 0.9.3 - 10/16/2000 - G.Juyn * */
/* * - added optional support for bKGD for PNG images * */
/* * - added support for JDAA * */
/* * 0.9.3 - 10/17/2000 - G.Juyn * */
/* * - added callback to process non-critical unknown chunks * */
/* * - fixed support for bKGD * */
/* * 0.9.3 - 10/19/2000 - G.Juyn * */
/* * - implemented delayed delta-processing * */
/* * 0.9.4 - 12/16/2000 - G.Juyn * */
/* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */
/* * * */
/* * 1.0.1 - 02/08/2001 - G.Juyn * */
/* * - added MEND processing callback * */
/* * 1.0.1 - 02/13/2001 - G.Juyn * */
/* * - fixed first FRAM_MODE=4 timing problem * */
/* * * */
/* * 1.0.2 - 06/23/2001 - G.Juyn * */
/* * - added optimization option for MNG-video playback * */
/* * - added processterm callback * */
/* * 1.0.2 - 06/25/2001 - G.Juyn * */
/* * - added option to turn off progressive refresh * */
/* * * */
/* ************************************************************************** */
#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
#pragma option -A /* force ANSI-C */
#endif
#ifndef _libmng_data_h_
#define _libmng_data_h_
/* ************************************************************************** */
#define MNG_MAGIC 0x52530a0aL
/* ************************************************************************** */
/* * * */
/* * Internal structures * */
/* * * */
/* ************************************************************************** */
typedef mng_palette8 mng_rgbpaltab;
/* ************************************************************************** */
/* * * */
/* * The saved_data structure * */
/* * * */
/* * This contains the saved data after a SAVE chunk has been processed. * */
/* * The data is saved from the main data structure during SAVE processing, * */
/* * and restored to the main data structure during SEEK processing. * */
/* * * */
/* ************************************************************************** */
typedef struct mng_savedata_struct {
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_bool bHasglobalPLTE; /* global PLTE chunk processed */
mng_bool bHasglobalTRNS; /* global tRNS chunk processed */
mng_bool bHasglobalGAMA; /* global gAMA chunk processed */
mng_bool bHasglobalCHRM; /* global cHRM chunk processed */
mng_bool bHasglobalSRGB; /* global sRGB chunk processed */
mng_bool bHasglobalICCP; /* global iCCP chunk processed */
mng_bool bHasglobalBKGD; /* global bKGD chunk processed */
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
#ifdef MNG_SUPPORT_DISPLAY
mng_uint16 iBACKred; /* BACK fields */
mng_uint16 iBACKgreen;
mng_uint16 iBACKblue;
mng_uint8 iBACKmandatory;
mng_uint16 iBACKimageid;
mng_uint8 iBACKtile;
mng_uint8 iFRAMmode; /* FRAM fields (global) */
mng_uint32 iFRAMdelay;
mng_uint32 iFRAMtimeout;
mng_bool bFRAMclipping;
mng_int32 iFRAMclipl;
mng_int32 iFRAMclipr;
mng_int32 iFRAMclipt;
mng_int32 iFRAMclipb;
mng_uint32 iGlobalPLTEcount; /* global PLTE fields */
mng_rgbpaltab aGlobalPLTEentries;
mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */
mng_uint8arr aGlobalTRNSrawdata;
mng_uint32 iGlobalGamma; /* global gAMA fields */
mng_uint32 iGlobalWhitepointx; /* global cHRM fields */
mng_uint32 iGlobalWhitepointy;
mng_uint32 iGlobalPrimaryredx;
mng_uint32 iGlobalPrimaryredy;
mng_uint32 iGlobalPrimarygreenx;
mng_uint32 iGlobalPrimarygreeny;
mng_uint32 iGlobalPrimarybluex;
mng_uint32 iGlobalPrimarybluey;
mng_uint8 iGlobalRendintent; /* global sRGB fields */
mng_uint32 iGlobalProfilesize; /* global iCCP fields */
mng_ptr pGlobalProfile;
mng_uint16 iGlobalBKGDred; /* global bKGD fields */
mng_uint16 iGlobalBKGDgreen;
mng_uint16 iGlobalBKGDblue;
#endif /* MNG_SUPPORT_DISPLAY */
} mng_savedata;
typedef mng_savedata * mng_savedatap;
/* ************************************************************************** */
/* * * */
/* * The main libmng data structure * */
/* * * */
/* * The handle used in all functions points to this structure which * */
/* * contains all volatile data necessary to process the network graphic. * */
/* * * */
/* ************************************************************************** */
typedef struct mng_data_struct {
mng_uint32 iMagic; /* magic number to validate
a given handle */
mng_ptr pUserdata; /* application workdata */
mng_imgtype eSigtype; /* image information */
mng_imgtype eImagetype; /* initially zeroed */
mng_uint32 iWidth; /* filled after header is processed */
mng_uint32 iHeight;
mng_uint32 iTicks; /* these only after MHDR */
mng_uint32 iLayercount;
mng_uint32 iFramecount;
mng_uint32 iPlaytime;
mng_uint32 iSimplicity;
mng_uint8 iAlphadepth; /* indicates expected alpha-depth */
mng_uint32 iImagelevel; /* level an image inside a stream */
mng_uint32 iCanvasstyle; /* layout of the drawing-canvas */
mng_uint32 iBkgdstyle; /* layout of the background-canvas */
mng_int8 iMagnify; /* magnification factor (not used yet) */
mng_uint32 iOffsetx; /* x-offset for extremely large image */
mng_uint32 iOffsety; /* y-offset for extremely large image */
mng_uint32 iCanvaswidth; /* real canvas size */
mng_uint32 iCanvasheight; /* must be set by processheader callback */
mng_uint16 iBGred; /* default background color */
mng_uint16 iBGgreen; /* initially "black" */
mng_uint16 iBGblue;
mng_bool bUseBKGD; /* preferred use of bKGD for PNG */
mng_bool bIssRGB; /* indicates sRGB system */
#ifdef MNG_FULL_CMS /* little CMS variables */
mng_cmsprof hProf1; /* image input profile */
mng_cmsprof hProf2; /* default output profile */
mng_cmsprof hProf3; /* default sRGB profile */
mng_cmstrans hTrans; /* current transformation handle */
#endif
mng_float dViewgamma; /* gamma calculation variables */
mng_float dDisplaygamma; /* initially set for sRGB conditions */
mng_float dDfltimggamma;
mng_bool bStorechunks; /* switch for storing chunkdata */
mng_bool bSectionbreaks; /* indicate NEEDSECTIONWAIT breaks */
mng_bool bCacheplayback; /* switch to cache playback info */
mng_bool bDoProgressive; /* progressive refresh for large images */
mng_speedtype iSpeed; /* speed-modifier for animations */
mng_uint32 iMaxwidth; /* maximum canvas size */
mng_uint32 iMaxheight; /* initially set to 1024 x 1024 */
mng_int32 iErrorcode; /* error reporting fields */
mng_int8 iSeverity;
mng_int32 iErrorx1;
mng_int32 iErrorx2;
mng_pchar zErrortext;
mng_memalloc fMemalloc; /* callback pointers */
mng_memfree fMemfree; /* initially nulled */
mng_openstream fOpenstream;
mng_closestream fClosestream;
mng_readdata fReaddata;
mng_writedata fWritedata;
mng_errorproc fErrorproc;
mng_traceproc fTraceproc;
mng_processheader fProcessheader;
mng_processtext fProcesstext;
mng_processsave fProcesssave;
mng_processseek fProcessseek;
mng_processneed fProcessneed;
mng_processmend fProcessmend;
mng_processunknown fProcessunknown;
mng_processterm fProcessterm;
mng_getcanvasline fGetcanvasline;
mng_getbkgdline fGetbkgdline;
mng_getalphaline fGetalphaline;
mng_refresh fRefresh;
mng_gettickcount fGettickcount;
mng_settimer fSettimer;
mng_processgamma fProcessgamma;
mng_processchroma fProcesschroma;
mng_processsrgb fProcesssrgb;
mng_processiccp fProcessiccp;
mng_processarow fProcessarow;
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_bool bPreDraft48; /* flags ancient style draft */
mng_chunkid iChunkname; /* read/write-state variables */
mng_uint32 iChunkseq;
mng_chunkp pFirstchunk; /* double-linked list of */
mng_chunkp pLastchunk; /* stored chunk-structures */
mng_bool bHasheader; /* first header chunk processed */
mng_bool bHasMHDR; /* inside a MHDR-MEND sequence */
mng_bool bHasIHDR; /* inside a IHDR-IEND sequence */
mng_bool bHasBASI; /* inside a BASI-IEND sequence */
mng_bool bHasDHDR; /* inside a DHDR-IEND sequence */
#ifdef MNG_INCLUDE_JNG
mng_bool bHasJHDR; /* inside a JHDR-IEND sequence */
mng_bool bHasJSEP; /* passed the JSEP separator */
mng_bool bHasJDAA; /* at least 1 JDAA processed */
mng_bool bHasJDAT; /* at least 1 JDAT processed */
#endif
mng_bool bHasPLTE; /* PLTE chunk processed */
mng_bool bHasTRNS; /* tRNS chunk processed */
mng_bool bHasGAMA; /* gAMA chunk processed */
mng_bool bHasCHRM; /* cHRM chunk processed */
mng_bool bHasSRGB; /* sRGB chunk processed */
mng_bool bHasICCP; /* iCCP chunk processed */
mng_bool bHasBKGD; /* bKGD chunk processed */
mng_bool bHasIDAT; /* at least 1 IDAT processed */
mng_bool bHasSAVE; /* SAVE chunk processed */
mng_bool bHasBACK; /* BACK chunk processed */
mng_bool bHasFRAM; /* FRAM chunk processed */
mng_bool bHasTERM; /* TERM chunk processed */
mng_bool bHasLOOP; /* at least 1 LOOP open */
mng_bool bHasglobalPLTE; /* global PLTE chunk processed */
mng_bool bHasglobalTRNS; /* global tRNS chunk processed */
mng_bool bHasglobalGAMA; /* global gAMA chunk processed */
mng_bool bHasglobalCHRM; /* global cHRM chunk processed */
mng_bool bHasglobalSRGB; /* global sRGB chunk processed */
mng_bool bHasglobalICCP; /* global iCCP chunk processed */
mng_bool bHasglobalBKGD; /* global bKGD chunk processed */
mng_uint32 iDatawidth; /* IHDR/BASI/DHDR fields */
mng_uint32 iDataheight; /* valid if inside IHDR-IEND, */
mng_uint8 iBitdepth; /* BASI-IEND or DHDR-IEND */
mng_uint8 iColortype;
mng_uint8 iCompression;
mng_uint8 iFilter;
mng_uint8 iInterlace;
mng_uint32 iPLTEcount; /* PLTE fields */
mng_bool bEMNGMAhack; /* TODO: to be removed in 1.0.0 !!! */
#ifdef MNG_INCLUDE_JNG
mng_uint8 iJHDRcolortype; /* JHDR fields */
mng_uint8 iJHDRimgbitdepth; /* valid if inside JHDR-IEND */
mng_uint8 iJHDRimgcompression;
mng_uint8 iJHDRimginterlace;
mng_uint8 iJHDRalphabitdepth;
mng_uint8 iJHDRalphacompression;
mng_uint8 iJHDRalphafilter;
mng_uint8 iJHDRalphainterlace;
#endif
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
#ifdef MNG_SUPPORT_READ
mng_bool bReading; /* read processing variables */
mng_bool bHavesig;
mng_bool bEOF;
mng_uint32 iReadbufsize;
mng_uint8p pReadbuf;
mng_uint32 iLargebufsize; /* temp for very large chunks */
mng_uint8p pLargebuf;
mng_uint32 iSuspendtime; /* tickcount at last suspension */
mng_bool bSuspended; /* input-reading has been suspended;
we're expecting a call to
mng_read_resume! */
mng_uint8 iSuspendpoint; /* indicates at which point the flow
was broken to suspend input-reading */
mng_bool bSuspensionmode; /* I/O-suspension variables */
mng_uint32 iSuspendbufsize;
mng_uint8p pSuspendbuf;
mng_uint8p pSuspendbufnext;
mng_uint32 iSuspendbufleft;
mng_uint32 iChunklen; /* chunk length */
mng_uint8p pReadbufnext; /* 32K+ suspension-processing */
#endif /* MNG_SUPPORT_READ */
#ifdef MNG_SUPPORT_WRITE
mng_bool bCreating; /* create/write processing variables */
mng_bool bWriting;
mng_chunkid iFirstchunkadded;
mng_uint32 iWritebufsize;
mng_uint8p pWritebuf;
#endif
#ifdef MNG_SUPPORT_DISPLAY
mng_bool bDisplaying; /* display-state variables */
mng_bool bFramedone;
mng_uint32 iFrameseq;
mng_uint32 iLayerseq;
mng_uint32 iFrametime; /* millisecs */
mng_uint32 iRequestframe; /* go_xxxx variables */
mng_uint32 iRequestlayer;
mng_uint32 iRequesttime;
mng_bool bSearching;
mng_bool bRestorebkgd; /* flags restore retquired before IDAT/JDAT */
mng_uint32 iRuntime; /* millisecs since start */
mng_uint32 iSynctime; /* tickcount at last framesync */
mng_uint32 iStarttime; /* tickcount at start */
mng_uint32 iEndtime; /* tickcount at end */
mng_bool bRunning; /* animation is active */
mng_bool bTimerset; /* the timer has been set;
we're expecting a call to
mng_display_resume! */
mng_uint8 iBreakpoint; /* indicates at which point the
flow was broken to run the timer */
mng_bool bSectionwait; /* indicates a section break */
mng_bool bFreezing; /* indicates app requested a freeze */
mng_bool bResetting; /* indicates app requested a reset */
mng_bool bNeedrefresh; /* indicates screen-refresh is needed */
mng_objectp pCurrentobj; /* current "object" */
mng_objectp pCurraniobj; /* current animation object
"to be"/"being" processed */
mng_objectp pTermaniobj; /* TERM animation object */
mng_uint32 iIterations; /* TERM/MEND iteration count */
mng_objectp pObjzero; /* "on-the-fly" image (object = 0) */
mng_objectp pLastclone; /* last clone */
mng_objectp pStoreobj; /* current store object for row routines */
mng_objectp pStorebuf; /* current store object-buffer for row routines */
mng_objectp pRetrieveobj; /* current retrieve object for row routines */
mng_savedatap pSavedata; /* pointer to saved data (after SAVE) */
mng_uint32 iUpdateleft; /* update region for refresh */
mng_uint32 iUpdateright;
mng_uint32 iUpdatetop;
mng_uint32 iUpdatebottom;
mng_int8 iPass; /* current interlacing pass;
negative value means no interlace */
mng_int32 iRow; /* current row counter */
mng_int32 iRowinc; /* row increment for this pass */
mng_int32 iCol; /* current starting column */
mng_int32 iColinc; /* column increment for this pass */
mng_int32 iRowsamples; /* nr. of samples in current workrow */
mng_int32 iSamplemul; /* needed to calculate rowsize */
mng_int32 iSampleofs; /* from rowsamples */
mng_int32 iSamplediv;
mng_int32 iRowsize; /* size of actual data in work row */
mng_int32 iRowmax; /* maximum size of data in work row */
mng_int32 iFilterofs; /* offset to filter-byte in work row */
mng_int32 iPixelofs; /* offset to pixel-bytes in work row */
mng_uint32 iLevel0; /* leveling variables */
mng_uint32 iLevel1;
mng_uint32 iLevel2;
mng_uint32 iLevel3;
mng_uint8p pWorkrow; /* working row of pixel-data */
mng_uint8p pPrevrow; /* previous row of pixel-data */
mng_uint8p pRGBArow; /* intermediate row of RGBA8 or RGBA16 data */
mng_bool bIsRGBA16; /* indicates intermediate row is RGBA16 */
mng_bool bIsOpaque; /* indicates intermediate row is fully opaque */
mng_int32 iFilterbpp; /* bpp index for filtering routines */
mng_int32 iSourcel; /* variables for showing objects */
mng_int32 iSourcer;
mng_int32 iSourcet;
mng_int32 iSourceb;
mng_int32 iDestl;
mng_int32 iDestr;
mng_int32 iDestt;
mng_int32 iDestb;
mng_objectp pFirstimgobj; /* double-linked list of */
mng_objectp pLastimgobj; /* image-object structures */
mng_objectp pFirstaniobj; /* double-linked list of */
mng_objectp pLastaniobj; /* animation-object structures */
#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS)
mng_uint8 aGammatab[256]; /* precomputed gamma lookup table */
mng_float dLastgamma; /* last gamma used to compute table */
#endif
mng_fptr fDisplayrow; /* internal callback to display an
uncompressed/unfiltered/
color-corrected row */
mng_fptr fRestbkgdrow; /* internal callback for restore-
background processing of a row */
mng_fptr fCorrectrow; /* internal callback to color-correct an
uncompressed/unfiltered row */
mng_fptr fRetrieverow; /* internal callback to retrieve an
uncompressed/unfiltered row of data */
mng_fptr fStorerow; /* internal callback to store an
uncompressed/unfiltered row of data */
mng_fptr fProcessrow; /* internal callback to process an
uncompressed row of data */
mng_fptr fDifferrow; /* internal callback to perform
added filter leveling and
differing on an unfiltered row */
mng_fptr fScalerow; /* internal callback to scale a
delta-row to the bitdepth of its target */
mng_fptr fDeltarow; /* internal callback to execute a
delta-row onto a target */
mng_fptr fInitrowproc; /* internal callback to initialize
the row processing */
mng_uint16 iDEFIobjectid; /* DEFI fields */
mng_bool bDEFIhasdonotshow;
mng_uint8 iDEFIdonotshow;
mng_bool bDEFIhasconcrete;
mng_uint8 iDEFIconcrete;
mng_bool bDEFIhasloca;
mng_int32 iDEFIlocax;
mng_int32 iDEFIlocay;
mng_bool bDEFIhasclip;
mng_int32 iDEFIclipl;
mng_int32 iDEFIclipr;
mng_int32 iDEFIclipt;
mng_int32 iDEFIclipb;
mng_uint16 iBACKred; /* BACK fields */
mng_uint16 iBACKgreen;
mng_uint16 iBACKblue;
mng_uint8 iBACKmandatory;
mng_uint16 iBACKimageid;
mng_uint8 iBACKtile;
mng_uint8 iFRAMmode; /* FRAM fields (global) */
mng_uint32 iFRAMdelay;
mng_uint32 iFRAMtimeout;
mng_bool bFRAMclipping;
mng_int32 iFRAMclipl;
mng_int32 iFRAMclipr;
mng_int32 iFRAMclipt;
mng_int32 iFRAMclipb;
mng_uint8 iFramemode; /* current subframe variables */
mng_uint32 iFramedelay;
mng_uint32 iFrametimeout;
mng_bool bFrameclipping;
mng_int32 iFrameclipl;
mng_int32 iFrameclipr;
mng_int32 iFrameclipt;
mng_int32 iFrameclipb;
mng_uint32 iNextdelay; /* delay for *after* next image */
mng_uint8 iSHOWmode; /* SAVE fields */
mng_uint16 iSHOWfromid;
mng_uint16 iSHOWtoid;
mng_uint16 iSHOWnextid;
mng_int16 iSHOWskip;
mng_uint32 iGlobalPLTEcount; /* global PLTE fields */
mng_rgbpaltab aGlobalPLTEentries;
mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */
mng_uint8arr aGlobalTRNSrawdata;
mng_uint32 iGlobalGamma; /* global gAMA fields */
mng_uint32 iGlobalWhitepointx; /* global cHRM fields */
mng_uint32 iGlobalWhitepointy;
mng_uint32 iGlobalPrimaryredx;
mng_uint32 iGlobalPrimaryredy;
mng_uint32 iGlobalPrimarygreenx;
mng_uint32 iGlobalPrimarygreeny;
mng_uint32 iGlobalPrimarybluex;
mng_uint32 iGlobalPrimarybluey;
mng_uint8 iGlobalRendintent; /* global sRGB fields */
mng_uint32 iGlobalProfilesize; /* global iCCP fields */
mng_ptr pGlobalProfile;
mng_uint16 iGlobalBKGDred; /* global bKGD fields */
mng_uint16 iGlobalBKGDgreen;
mng_uint16 iGlobalBKGDblue;
mng_ptr pDeltaImage; /* delta-image fields */
mng_uint8 iDeltaImagetype;
mng_uint8 iDeltatype;
mng_uint32 iDeltaBlockwidth;
mng_uint32 iDeltaBlockheight;
mng_uint32 iDeltaBlockx;
mng_uint32 iDeltaBlocky;
mng_bool bDeltaimmediate;
mng_fptr fDeltagetrow; /* internal delta-proc callbacks */
mng_fptr fDeltaaddrow;
mng_fptr fDeltareplacerow;
mng_fptr fDeltaputrow;
mng_uint16 iMAGNfromid;
mng_uint16 iMAGNtoid;
#endif /* MNG_SUPPORT_DISPLAY */
#ifdef MNG_INCLUDE_ZLIB
z_stream sZlib; /* zlib (de)compression variables */
mng_int32 iZlevel; /* zlib compression parameters */
mng_int32 iZmethod;
mng_int32 iZwindowbits;
mng_int32 iZmemlevel;
mng_int32 iZstrategy;
mng_uint32 iMaxIDAT; /* maximum size of IDAT data */
mng_bool bInflating; /* indicates "inflate" in progress */
mng_bool bDeflating; /* indicates "deflate" in progress */
#endif /* MNG_INCLUDE_ZLIB */
#ifdef MNG_INCLUDE_JNG
mngjpeg_dctmethod eJPEGdctmethod; /* IJG compression variables */
mng_int32 iJPEGquality;
mng_int32 iJPEGsmoothing;
mng_bool bJPEGcompressprogr;
mng_bool bJPEGcompressopt;
mng_uint32 iMaxJDAT; /* maximum size of JDAT/JDAA data */
mngjpeg_compp pJPEGcinfo; /* compression structure */
mngjpeg_errorp pJPEGcerr; /* error-manager compress */
mngjpeg_decompp pJPEGdinfo; /* decompression structure (JDAT) */
mngjpeg_errorp pJPEGderr; /* error-manager decompress (JDAT) */
mngjpeg_sourcep pJPEGdsrc; /* source-manager decompress (JDAT) */
mngjpeg_decompp pJPEGdinfo2; /* decompression structure (JDAA) */
mngjpeg_errorp pJPEGderr2; /* error-manager decompress (JDAA) */
mngjpeg_sourcep pJPEGdsrc2; /* source-manager decompress (JDAA) */
mng_uint8p pJPEGbuf; /* buffer for JPEG (de)compression (JDAT) */
mng_uint32 iJPEGbufmax; /* allocated space for buffer (JDAT) */
mng_uint8p pJPEGcurrent; /* current pointer into buffer (JDAT) */
mng_uint32 iJPEGbufremain; /* remaining bytes in buffer (JDAT) */
mng_uint32 iJPEGtoskip; /* bytes to skip on next input-block (JDAT) */
mng_uint8p pJPEGbuf2; /* buffer for JPEG (de)compression (JDAA) */
mng_uint32 iJPEGbufmax2; /* allocated space for buffer (JDAA) */
mng_uint8p pJPEGcurrent2; /* current pointer into buffer (JDAA) */
mng_uint32 iJPEGbufremain2; /* remaining bytes in buffer (JDAA) */
mng_uint32 iJPEGtoskip2; /* bytes to skip on next input-block (JDAA) */
mng_uint8p pJPEGrow; /* buffer for a JPEG row of samples (JDAT) */
mng_uint32 iJPEGrowlen;
mng_uint8p pJPEGrow2; /* buffer for a JPEG row of samples (JDAA) */
mng_uint32 iJPEGrowlen2;
mng_bool bJPEGcompress; /* indicates "compress" initialized */
mng_bool bJPEGdecompress; /* indicates "decompress" initialized (JDAT) */
mng_bool bJPEGhasheader; /* indicates "readheader" succeeded (JDAT) */
mng_bool bJPEGdecostarted; /* indicates "decompress" started (JDAT) */
mng_bool bJPEGscanstarted; /* indicates "first scan" started (JDAT) */
mng_bool bJPEGprogressive; /* indicates a progressive image (JDAT) */
mng_bool bJPEGdecompress2; /* indicates "decompress" initialized (JDAA) */
mng_bool bJPEGhasheader2; /* indicates "readheader" succeeded (JDAA) */
mng_bool bJPEGdecostarted2; /* indicates "decompress" started (JDAA) */
mng_bool bJPEGscanstarted2; /* indicates "first scan" started (JDAA) */
mng_bool bJPEGprogressive2; /* indicates a progressive image (JDAA) */
mng_fptr fStorerow2; /* internal callback to store an
uncompressed/unfiltered row of JPEG-data (JDAT) */
mng_fptr fStorerow3; /* internal callback to store an
uncompressed/unfiltered row of JPEG-data (JDAA) */
mng_uint32 iJPEGrow; /* row-number for current JPEG row */
mng_uint32 iJPEGalpharow; /* nr. of rows filled with alpha */
mng_uint32 iJPEGrgbrow; /* nr. of rows filled with 'color'-info */
mng_uint32 iJPEGdisprow; /* nr. of rows already displayed "on-the-fly" */
#if defined(MNG_USE_SETJMP) && defined (MNG_INCLUDE_IJG6B)
jmp_buf sErrorbuf; /* setjmp/longjmp buffer (error-recovery) */
#endif
#endif /* MNG_INCLUDE_JNG */
mng_uint32 aCRCtable [256]; /* CRC prefab table */
mng_bool bCRCcomputed; /* "has been build" indicator */
} mng_data;
typedef mng_data * mng_datap;
/* ************************************************************************** */
/* * * */
/* * Internal Callback-Function prototypes * */
/* * * */
/* ************************************************************************** */
typedef mng_retcode(*mng_displayrow) (mng_datap pData);
typedef mng_retcode(*mng_restbkgdrow) (mng_datap pData);
typedef mng_retcode(*mng_correctrow) (mng_datap pData);
typedef mng_retcode(*mng_retrieverow) (mng_datap pData);
typedef mng_retcode(*mng_storerow) (mng_datap pData);
typedef mng_retcode(*mng_processrow) (mng_datap pData);
typedef mng_retcode(*mng_initrowproc) (mng_datap pData);
typedef mng_retcode(*mng_differrow) (mng_datap pData);
typedef mng_retcode(*mng_scalerow) (mng_datap pData);
typedef mng_retcode(*mng_deltarow) (mng_datap pData);
typedef mng_retcode(*mng_magnify_x) (mng_datap pData,
mng_uint16 iMX,
mng_uint16 iML,
mng_uint16 iMR,
mng_uint32 iWidth,
mng_uint8p iSrcline,
mng_uint8p iDstline);
typedef mng_retcode(*mng_magnify_y) (mng_datap pData,
mng_int32 iM,
mng_int32 iS,
mng_uint32 iWidth,
mng_uint8p iSrcline1,
mng_uint8p iSrcline2,
mng_uint8p iDstline);
/* ************************************************************************** */
/* * * */
/* * Routines for swapping byte-order from and to graphic files * */
/* * (This code is adapted from the libpng package) * */
/* * * */
/* ************************************************************************** */
#ifndef MNG_BIGENDIAN_SUPPORTED
mng_uint32 mng_get_uint32 (mng_uint8p pBuf);
mng_int32 mng_get_int32 (mng_uint8p pBuf);
mng_uint16 mng_get_uint16 (mng_uint8p pBuf);
void mng_put_uint32 (mng_uint8p pBuf,
mng_uint32 i);
void mng_put_int32 (mng_uint8p pBuf,
mng_int32 i);
void mng_put_uint16 (mng_uint8p pBuf,
mng_uint16 i);
#else /* MNG_BIGENDIAN_SUPPORTED */
#define mng_get_uint32(P) *(mng_uint32p)(P)
#define mng_get_int32(P) *(mng_int32p)(P)
#define mng_get_uint16(P) *(mng_uint16p)(P)
#define mng_put_uint32(P,I) *(mng_uint32p)(P) = (I)
#define mng_put_int32(P,I) *(mng_int32p)(P) = (I)
#define mng_put_uint16(P,I) *(mng_uint16p)(P) = (I)
#endif /* MNG_BIGENDIAN_SUPPORTED */
/* ************************************************************************** */
/* * * */
/* * Some handy(?) macro definitions * */
/* * * */
/* ************************************************************************** */
#define MAX_COORD(a, b) (((a) > (b)) ? (a) : (b))
#define MIN_COORD(a, b) (((a) < (b)) ? (a) : (b))
/* ************************************************************************** */
#endif /* _libmng_data_h_ */
/* ************************************************************************** */
/* * end of file * */
/* ************************************************************************** */
|
