source: trunk/src/3rdparty/libmng/libmng_data.h@ 348

Last change on this file since 348 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 55.1 KB
Line 
1/* ************************************************************************** */
2/* * For conditions of distribution and use, * */
3/* * see copyright notice in libmng.h * */
4/* ************************************************************************** */
5/* * * */
6/* * project : libmng * */
7/* * file : libmng_data.h copyright (c) 2000-2007 G.Juyn * */
8/* * version : 1.0.10 * */
9/* * * */
10/* * purpose : main data structure definition * */
11/* * * */
12/* * author : G.Juyn * */
13/* * * */
14/* * comment : Definition of the library main data structure * */
15/* * * */
16/* * changes : 0.5.1 - 05/04/2000 - G.Juyn * */
17/* * - added CRC table to main structure (for thread-safety) * */
18/* * 0.5.1 - 05/06/2000 - G.Juyn * */
19/* * - added iPLTEentries for checking hIST-length * */
20/* * 0.5.1 - 05/08/2000 - G.Juyn * */
21/* * - changed palette definition to exported palette-type * */
22/* * - removed frozen indicator * */
23/* * - added create/write indicators * */
24/* * - changed strict-ANSI stuff * */
25/* * 0.5.1 - 05/13/2000 - G.Juyn * */
26/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
27/* * - added TERM animation object pointer (easier reference) * */
28/* * - added saved-data structure for SAVE/SEEK processing * */
29/* * * */
30/* * 0.5.2 - 05/18/2000 - G.Juyn * */
31/* * - added fields for JNG support (IJG-based) * */
32/* * 0.5.2 - 05/24/2000 - G.Juyn * */
33/* * - changed global tRNS definition * */
34/* * 0.5.2 - 05/30/2000 - G.Juyn * */
35/* * - added delta-image fields * */
36/* * 0.5.2 - 06/01/2000 - G.Juyn * */
37/* * - added internal delta-image processing callbacks * */
38/* * 0.5.2 - 06/02/2000 - G.Juyn * */
39/* * - changed SWAP_ENDIAN to BIGENDIAN_SUPPORTED * */
40/* * (contributed by Tim Rowley) * */
41/* * - added getalphaline callback for RGB8_A8 canvasstyle * */
42/* * 0.5.2 - 06/06/2000 - G.Juyn * */
43/* * - added parameter for delayed buffer-processing * */
44/* * * */
45/* * 0.5.3 - 06/16/2000 - G.Juyn * */
46/* * - added update-region parms for refresh calback * */
47/* * - added Needrefresh parameter * */
48/* * 0.5.3 - 06/17/2000 - G.Juyn * */
49/* * - added Deltaimmediate parm for faster delta-processing * */
50/* * 0.5.3 - 06/21/2000 - G.Juyn * */
51/* * - added Speed parameter to facilitate testing * */
52/* * - added Imagelevel parameter for processtext callback * */
53/* * 0.5.3 - 06/26/2000 - G.Juyn * */
54/* * - changed userdata variable to mng_ptr * */
55/* * * */
56/* * 0.9.1 - 07/07/2000 - G.Juyn * */
57/* * - added variables for go_xxxx processing * */
58/* * 0.9.1 - 07/08/2000 - G.Juyn * */
59/* * - added variables for improved timing support * */
60/* * 0.9.1 - 07/15/2000 - G.Juyn * */
61/* * - added callbacks for SAVE/SEEK processing * */
62/* * - added variable for NEEDSECTIONWAIT breaks * */
63/* * - added variable for freeze & reset processing * */
64/* * 0.9.1 - 07/17/2000 - G.Juyn * */
65/* * - fixed suspension-buffering for 32K+ chunks * */
66/* * * */
67/* * 0.9.2 - 07/29/2000 - G.Juyn * */
68/* * - removed Nextbackxxx fields (no longer used) * */
69/* * 0.9.2 - 07/31/2000 - G.Juyn * */
70/* * - fixed wrapping of suspension parameters * */
71/* * 0.9.2 - 08/04/2000 - G.Juyn * */
72/* * - B111096 - fixed large-buffer read-suspension * */
73/* * 0.9.2 - 08/05/2000 - G.Juyn * */
74/* * - changed file-prefixes * */
75/* * * */
76/* * 0.9.3 - 08/26/2000 - G.Juyn * */
77/* * - added MAGN chunk * */
78/* * 0.9.3 - 09/07/2000 - G.Juyn * */
79/* * - added support for new filter_types * */
80/* * 0.9.3 - 09/10/2000 - G.Juyn * */
81/* * - fixed DEFI behavior * */
82/* * 0.9.3 - 10/10/2000 - G.Juyn * */
83/* * - added support for alpha-depth prediction * */
84/* * 0.9.3 - 10/11/2000 - G.Juyn * */
85/* * - added support for nEED * */
86/* * 0.9.3 - 10/16/2000 - G.Juyn * */
87/* * - added optional support for bKGD for PNG images * */
88/* * - added support for JDAA * */
89/* * 0.9.3 - 10/17/2000 - G.Juyn * */
90/* * - added callback to process non-critical unknown chunks * */
91/* * - fixed support for bKGD * */
92/* * 0.9.3 - 10/19/2000 - G.Juyn * */
93/* * - implemented delayed delta-processing * */
94/* * 0.9.4 - 12/16/2000 - G.Juyn * */
95/* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */
96/* * * */
97/* * 1.0.1 - 02/08/2001 - G.Juyn * */
98/* * - added MEND processing callback * */
99/* * 1.0.1 - 02/13/2001 - G.Juyn * */
100/* * - fixed first FRAM_MODE=4 timing problem * */
101/* * * */
102/* * 1.0.2 - 06/23/2001 - G.Juyn * */
103/* * - added optimization option for MNG-video playback * */
104/* * - added processterm callback * */
105/* * 1.0.2 - 06/25/2001 - G.Juyn * */
106/* * - added option to turn off progressive refresh * */
107/* * * */
108/* * 1.0.5 - 07/08/2002 - G.Juyn * */
109/* * - B578572 - removed eMNGma hack (thanks Dimitri!) * */
110/* * 1.0.5 - 07/16/2002 - G.Juyn * */
111/* * - B581625 - large chunks fail with suspension reads * */
112/* * 1.0.5 - 08/15/2002 - G.Juyn * */
113/* * - completed PROM support * */
114/* * 1.0.5 - 09/15/2002 - G.Juyn * */
115/* * - fixed LOOP iteration=0 special case * */
116/* * 1.0.5 - 09/20/2002 - G.Juyn * */
117/* * - finished support for BACK image & tiling * */
118/* * 1.0.5 - 10/07/2002 - G.Juyn * */
119/* * - added another fix for misplaced TERM chunk * */
120/* * - completed support for condition=2 in TERM chunk * */
121/* * 1.0.5 - 10/20/2002 - G.Juyn * */
122/* * - fixed processing for multiple objects in MAGN * */
123/* * - fixed display of visible target of PAST operation * */
124/* * 1.0.5 - 11/07/2002 - G.Juyn * */
125/* * - added support to get totals after mng_read() * */
126/* * 1.0.5 - 24/02/2003 - G.Juyn * */
127/* * - B683152 - libjpeg suspension not always honored correctly* */
128/* * * */
129/* * 1.0.6 - 04/11/2003 - G.Juyn * */
130/* * - B719420 - fixed several MNG_APP_CMS problems * */
131/* * 1.0.6 - 07/05/2003 - G. R-P * */
132/* * - optionally use zlib's crc32() function * */
133/* * 1.0.6 - 07/29/2003 - G.R-P * */
134/* * - added SKIPCHUNK conditionals around PAST chunk support * */
135/* * 1.0.6 - 08/17/2003 - G.R-P * */
136/* * - added iPNGdepth member to pData structure * */
137/* * * */
138/* * 1.0.7 - 03/10/2004 - G.R-P * */
139/* * - added conditionals around openstream/closestream * */
140/* * 1.0.7 - 03/24/2004 - G.R-P * */
141/* * - added more SKIPCHUNK conditionals * */
142/* * * */
143/* * 1.0.8 - 04/02/2004 - G.Juyn * */
144/* * - added CRC existence & checking flags * */
145/* * 1.0.8 - 04/10/2004 - G.Juyn * */
146/* * - added data-push mechanisms for specialized decoders * */
147/* * * */
148/* * 1.0.9 - 12/11/2004 - G.Juyn * */
149/* * - added conditional MNG_OPTIMIZE_DISPLAYCALLS * */
150/* * * */
151/* * 1.0.10 - 04/08/2007 - G.Juyn * */
152/* * - added support for mPNG proposal * */
153/* * 1.0.10 - 04/12/2007 - G.Juyn * */
154/* * - added support for ANG proposal * */
155/* * * */
156/* ************************************************************************** */
157
158#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
159#pragma option -A /* force ANSI-C */
160#endif
161
162#ifndef _libmng_data_h_
163#define _libmng_data_h_
164
165/* ************************************************************************** */
166
167#define MNG_MAGIC 0x52530a0aL
168
169/* ************************************************************************** */
170/* * * */
171/* * Internal structures * */
172/* * * */
173/* ************************************************************************** */
174
175typedef mng_palette8 mng_rgbpaltab;
176
177/* ************************************************************************** */
178/* * * */
179/* * The saved_data structure * */
180/* * * */
181/* * This contains the saved data after a SAVE chunk has been processed. * */
182/* * The data is saved from the main data structure during SAVE processing, * */
183/* * and restored to the main data structure during SEEK processing. * */
184/* * * */
185/* ************************************************************************** */
186
187typedef struct mng_savedata_struct {
188
189#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
190 mng_bool bHasglobalPLTE; /* global PLTE chunk processed */
191 mng_bool bHasglobalTRNS; /* global tRNS chunk processed */
192 mng_bool bHasglobalGAMA; /* global gAMA chunk processed */
193 mng_bool bHasglobalCHRM; /* global cHRM chunk processed */
194 mng_bool bHasglobalSRGB; /* global sRGB chunk processed */
195 mng_bool bHasglobalICCP; /* global iCCP chunk processed */
196 mng_bool bHasglobalBKGD; /* global bKGD chunk processed */
197#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
198
199#ifdef MNG_SUPPORT_DISPLAY
200 mng_uint16 iBACKred; /* BACK fields */
201 mng_uint16 iBACKgreen;
202 mng_uint16 iBACKblue;
203 mng_uint8 iBACKmandatory;
204 mng_uint16 iBACKimageid;
205 mng_uint8 iBACKtile;
206
207 mng_uint8 iFRAMmode; /* FRAM fields (global) */
208 mng_uint32 iFRAMdelay;
209 mng_uint32 iFRAMtimeout;
210 mng_bool bFRAMclipping;
211 mng_int32 iFRAMclipl;
212 mng_int32 iFRAMclipr;
213 mng_int32 iFRAMclipt;
214 mng_int32 iFRAMclipb;
215
216 mng_uint32 iGlobalPLTEcount; /* global PLTE fields */
217 mng_rgbpaltab aGlobalPLTEentries;
218
219 mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */
220 mng_uint8arr aGlobalTRNSrawdata;
221
222 mng_uint32 iGlobalGamma; /* global gAMA fields */
223
224#ifndef MNG_SKIPCHUNK_cHRM
225 mng_uint32 iGlobalWhitepointx; /* global cHRM fields */
226 mng_uint32 iGlobalWhitepointy;
227 mng_uint32 iGlobalPrimaryredx;
228 mng_uint32 iGlobalPrimaryredy;
229 mng_uint32 iGlobalPrimarygreenx;
230 mng_uint32 iGlobalPrimarygreeny;
231 mng_uint32 iGlobalPrimarybluex;
232 mng_uint32 iGlobalPrimarybluey;
233#endif
234
235 mng_uint8 iGlobalRendintent; /* global sRGB fields */
236
237 mng_uint32 iGlobalProfilesize; /* global iCCP fields */
238 mng_ptr pGlobalProfile;
239
240 mng_uint16 iGlobalBKGDred; /* global bKGD fields */
241 mng_uint16 iGlobalBKGDgreen;
242 mng_uint16 iGlobalBKGDblue;
243#endif /* MNG_SUPPORT_DISPLAY */
244
245 } mng_savedata;
246
247typedef mng_savedata * mng_savedatap;
248
249/* ************************************************************************** */
250/* * * */
251/* * Internal buffer structure for data push mechanisms * */
252/* * * */
253/* ************************************************************************** */
254
255typedef struct {
256 mng_ptr pNext; /* for linked list */
257 mng_ptr pData; /* used for chunks & data */
258 mng_uint32 iLength;
259 mng_bool bOwned;
260 mng_uint8p pDatanext; /* only used for data */
261 mng_uint32 iRemaining;
262 } mng_pushdata;
263typedef mng_pushdata * mng_pushdatap;
264
265/* ************************************************************************** */
266/* * * */
267/* * The main libmng data structure * */
268/* * * */
269/* * The handle used in all functions points to this structure which * */
270/* * contains all volatile data necessary to process the network graphic. * */
271/* * * */
272/* ************************************************************************** */
273
274typedef struct mng_data_struct {
275
276 mng_uint32 iMagic; /* magic number to validate
277 a given handle */
278 mng_ptr pUserdata; /* application workdata */
279
280 mng_imgtype eSigtype; /* image information */
281 mng_imgtype eImagetype; /* initially zeroed */
282 mng_uint32 iWidth; /* filled after header is processed */
283 mng_uint32 iHeight;
284 mng_uint32 iTicks; /* these only after MHDR */
285 mng_uint32 iLayercount;
286 mng_uint32 iFramecount;
287 mng_uint32 iPlaytime;
288 mng_uint32 iSimplicity;
289 mng_uint8 iAlphadepth; /* indicates expected alpha-depth */
290
291 mng_uint32 iImagelevel; /* level of image inside a stream */
292
293 mng_uint32 iCanvasstyle; /* layout of the drawing-canvas */
294 mng_uint32 iBkgdstyle; /* layout of the background-canvas */
295
296 mng_int8 iMagnify; /* magnification factor (not used yet) */
297 mng_uint32 iOffsetx; /* x-offset for extremely large image */
298 mng_uint32 iOffsety; /* y-offset for extremely large image */
299 mng_uint32 iCanvaswidth; /* real canvas size */
300 mng_uint32 iCanvasheight; /* must be set by processheader callback */
301
302 mng_uint16 iBGred; /* default background color */
303 mng_uint16 iBGgreen; /* initially "black" */
304 mng_uint16 iBGblue;
305 mng_bool bUseBKGD; /* preferred use of bKGD for PNG */
306
307 mng_bool bIssRGB; /* indicates sRGB system */
308
309#ifdef MNG_FULL_CMS /* little CMS variables */
310 mng_cmsprof hProf1; /* image input profile */
311 mng_cmsprof hProf2; /* default output profile */
312 mng_cmsprof hProf3; /* default sRGB profile */
313 mng_cmstrans hTrans; /* current transformation handle */
314#endif
315
316 mng_float dViewgamma; /* gamma calculation variables */
317 mng_float dDisplaygamma; /* initially set for sRGB conditions */
318 mng_float dDfltimggamma;
319
320 mng_bool bStorechunks; /* switch for storing chunkdata */
321 mng_bool bSectionbreaks; /* indicate NEEDSECTIONWAIT breaks */
322 mng_bool bCacheplayback; /* switch to cache playback info */
323 mng_bool bDoProgressive; /* progressive refresh for large images */
324 mng_uint32 iCrcmode; /* CRC existence & checking flags */
325
326 mng_speedtype iSpeed; /* speed-modifier for animations */
327
328 mng_uint32 iMaxwidth; /* maximum canvas size */
329 mng_uint32 iMaxheight; /* initially set to 1024 x 1024 */
330
331 mng_int32 iErrorcode; /* error reporting fields */
332 mng_int8 iSeverity;
333 mng_int32 iErrorx1;
334 mng_int32 iErrorx2;
335 mng_pchar zErrortext;
336
337 mng_memalloc fMemalloc; /* callback pointers */
338 mng_memfree fMemfree; /* initially nulled */
339 mng_releasedata fReleasedata;
340#ifndef MNG_NO_OPEN_CLOSE_STREAM
341 mng_openstream fOpenstream;
342 mng_closestream fClosestream;
343#endif
344 mng_readdata fReaddata;
345 mng_writedata fWritedata;
346 mng_errorproc fErrorproc;
347 mng_traceproc fTraceproc;
348 mng_processheader fProcessheader;
349 mng_processtext fProcesstext;
350 mng_processsave fProcesssave;
351 mng_processseek fProcessseek;
352 mng_processneed fProcessneed;
353 mng_processmend fProcessmend;
354 mng_processunknown fProcessunknown;
355 mng_processterm fProcessterm;
356 mng_getcanvasline fGetcanvasline;
357 mng_getbkgdline fGetbkgdline;
358 mng_getalphaline fGetalphaline;
359 mng_refresh fRefresh;
360 mng_gettickcount fGettickcount;
361 mng_settimer fSettimer;
362 mng_processgamma fProcessgamma;
363 mng_processchroma fProcesschroma;
364 mng_processsrgb fProcesssrgb;
365 mng_processiccp fProcessiccp;
366 mng_processarow fProcessarow;
367
368#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
369#ifndef MNG_NO_OLD_VERSIONS
370 mng_bool bPreDraft48; /* flags ancient style draft */
371#endif
372
373 mng_chunkid iChunkname; /* read/write-state variables */
374 mng_uint32 iChunkseq;
375 mng_chunkp pFirstchunk; /* double-linked list of */
376 mng_chunkp pLastchunk; /* stored chunk-structures */
377
378 mng_bool bHasheader; /* first header chunk processed */
379 mng_bool bHasMHDR; /* inside a MHDR-MEND sequence */
380 mng_bool bHasIHDR; /* inside a IHDR-IEND sequence */
381 mng_bool bHasBASI; /* inside a BASI-IEND sequence */
382 mng_bool bHasDHDR; /* inside a DHDR-IEND sequence */
383#ifdef MNG_INCLUDE_JNG
384 mng_bool bHasJHDR; /* inside a JHDR-IEND sequence */
385 mng_bool bHasJSEP; /* passed the JSEP separator */
386 mng_bool bHasJDAA; /* at least 1 JDAA processed */
387 mng_bool bHasJDAT; /* at least 1 JDAT processed */
388#endif
389 mng_bool bHasPLTE; /* PLTE chunk processed */
390 mng_bool bHasTRNS; /* tRNS chunk processed */
391 mng_bool bHasGAMA; /* gAMA chunk processed */
392 mng_bool bHasCHRM; /* cHRM chunk processed */
393 mng_bool bHasSRGB; /* sRGB chunk processed */
394 mng_bool bHasICCP; /* iCCP chunk processed */
395 mng_bool bHasBKGD; /* bKGD chunk processed */
396 mng_bool bHasIDAT; /* at least 1 IDAT processed */
397
398 mng_bool bHasSAVE; /* SAVE chunk processed */
399 mng_bool bHasBACK; /* BACK chunk processed */
400 mng_bool bHasFRAM; /* FRAM chunk processed */
401 mng_bool bHasTERM; /* TERM chunk processed */
402 mng_bool bHasLOOP; /* at least 1 LOOP open */
403
404 mng_bool bHasglobalPLTE; /* global PLTE chunk processed */
405 mng_bool bHasglobalTRNS; /* global tRNS chunk processed */
406 mng_bool bHasglobalGAMA; /* global gAMA chunk processed */
407 mng_bool bHasglobalCHRM; /* global cHRM chunk processed */
408 mng_bool bHasglobalSRGB; /* global sRGB chunk processed */
409 mng_bool bHasglobalICCP; /* global iCCP chunk processed */
410 mng_bool bHasglobalBKGD; /* global bKGD chunk processed */
411
412 mng_uint32 iDatawidth; /* IHDR/BASI/DHDR fields */
413 mng_uint32 iDataheight; /* valid if inside IHDR-IEND, */
414 mng_uint8 iBitdepth; /* BASI-IEND or DHDR-IEND */
415 mng_uint8 iColortype;
416 mng_uint8 iCompression;
417 mng_uint8 iFilter;
418 mng_uint8 iInterlace;
419
420 mng_uint32 iPLTEcount; /* PLTE fields */
421
422#ifdef MNG_INCLUDE_JNG
423 mng_uint8 iJHDRcolortype; /* JHDR fields */
424 mng_uint8 iJHDRimgbitdepth; /* valid if inside JHDR-IEND */
425 mng_uint8 iJHDRimgcompression;
426 mng_uint8 iJHDRimginterlace;
427 mng_uint8 iJHDRalphabitdepth;
428 mng_uint8 iJHDRalphacompression;
429 mng_uint8 iJHDRalphafilter;
430 mng_uint8 iJHDRalphainterlace;
431#endif
432
433#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
434
435#ifdef MNG_SUPPORT_READ
436 mng_bool bReading; /* read processing variables */
437 mng_bool bHavesig;
438 mng_bool bEOF;
439 mng_uint32 iReadbufsize;
440 mng_uint8p pReadbuf;
441
442 mng_uint32 iLargebufsize; /* temp for very large chunks */
443 mng_uint8p pLargebuf;
444
445 mng_uint32 iSuspendtime; /* tickcount at last suspension */
446 mng_bool bSuspended; /* input-reading has been suspended;
447 we're expecting a call to
448 mng_read_resume! */
449 mng_uint8 iSuspendpoint; /* indicates at which point the flow
450 was broken to suspend input-reading */
451
452 mng_bool bSuspensionmode; /* I/O-suspension variables */
453 mng_uint32 iSuspendbufsize;
454 mng_uint8p pSuspendbuf;
455 mng_uint8p pSuspendbufnext;
456 mng_uint32 iSuspendbufleft;
457 mng_uint32 iChunklen; /* chunk length */
458 mng_uint8p pReadbufnext; /* 32K+ suspension-processing */
459 mng_uint8p pLargebufnext;
460
461 mng_pushdatap pFirstpushchunk; /* variables for push mechanisms */
462 mng_pushdatap pLastpushchunk;
463 mng_pushdatap pFirstpushdata;
464 mng_pushdatap pLastpushdata;
465#endif /* MNG_SUPPORT_READ */
466
467#ifdef MNG_SUPPORT_WRITE
468 mng_bool bCreating; /* create/write processing variables */
469 mng_bool bWriting;
470 mng_chunkid iFirstchunkadded;
471 mng_uint32 iWritebufsize;
472 mng_uint8p pWritebuf;
473#endif
474
475#ifdef MNG_SUPPORT_DISPLAY
476 mng_bool bDisplaying; /* display-state variables */
477 mng_bool bFramedone;
478 mng_uint32 iFrameseq;
479 mng_uint32 iLayerseq;
480 mng_uint32 iFrametime; /* millisecs */
481
482 mng_uint32 iTotalframes; /* end-totals after mng_read() */
483 mng_uint32 iTotallayers;
484 mng_uint32 iTotalplaytime; /* millisecs */
485
486 mng_bool bSkipping; /* LOOP iteration=0 */
487
488#ifdef MNG_SUPPORT_DYNAMICMNG
489 mng_bool bDynamic; /* MNG is dynamic (eg. has events) */
490 mng_bool bRunningevent; /* currently processing an event */
491 mng_bool bStopafterseek; /* stop after next SEEK */
492 mng_int32 iEventx; /* X/Y of current event */
493 mng_int32 iEventy;
494 mng_objectp pLastmousemove; /* last event triggered */
495#endif
496
497 mng_uint32 iRequestframe; /* go_xxxx variables */
498 mng_uint32 iRequestlayer;
499 mng_uint32 iRequesttime;
500 mng_bool bSearching;
501
502 mng_bool bRestorebkgd; /* flags restore required before IDAT/JDAT */
503
504 mng_uint32 iRuntime; /* millisecs since start */
505 mng_uint32 iSynctime; /* tickcount at last framesync */
506 mng_uint32 iStarttime; /* tickcount at start */
507 mng_uint32 iEndtime; /* tickcount at end */
508 mng_bool bRunning; /* animation is active */
509 mng_bool bTimerset; /* the timer has been set;
510 we're expecting a call to
511 mng_display_resume! */
512 mng_uint8 iBreakpoint; /* indicates at which point the
513 flow was broken to run the timer */
514 mng_bool bSectionwait; /* indicates a section break */
515 mng_bool bFreezing; /* indicates app requested a freeze */
516 mng_bool bResetting; /* indicates app requested a reset */
517 mng_bool bNeedrefresh; /* indicates screen-refresh is needed */
518 mng_bool bMisplacedTERM; /* indicates TERM is out of place */
519 mng_bool bOnlyfirstframe; /* show first frame after TERM and stop */
520 mng_uint32 iFramesafterTERM; /* determines frame-count after TERM */
521 mng_objectp pCurrentobj; /* current "object" */
522 mng_objectp pCurraniobj; /* current animation object
523 "to be"/"being" processed */
524 mng_objectp pTermaniobj; /* TERM animation object */
525 mng_uint32 iIterations; /* TERM/MEND iteration count */
526 mng_objectp pObjzero; /* "on-the-fly" image (object = 0) */
527 mng_objectp pLastclone; /* last clone */
528 mng_objectp pStoreobj; /* current store object for row routines */
529 mng_objectp pStorebuf; /* current store object-buffer for row routines */
530 mng_objectp pRetrieveobj; /* current retrieve object for row routines */
531 mng_savedatap pSavedata; /* pointer to saved data (after SAVE) */
532
533 mng_uint32 iUpdateleft; /* update region for refresh */
534 mng_uint32 iUpdateright;
535 mng_uint32 iUpdatetop;
536 mng_uint32 iUpdatebottom;
537
538 mng_int8 iPass; /* current interlacing pass;
539 negative value means no interlace */
540 mng_int32 iRow; /* current row counter */
541 mng_int32 iRowinc; /* row increment for this pass */
542 mng_int32 iCol; /* current starting column */
543 mng_int32 iColinc; /* column increment for this pass */
544 mng_int32 iRowsamples; /* nr. of samples in current workrow */
545 mng_int32 iSamplemul; /* needed to calculate rowsize */
546 mng_int32 iSampleofs; /* from rowsamples */
547 mng_int32 iSamplediv;
548 mng_int32 iRowsize; /* size of actual data in work row */
549 mng_int32 iRowmax; /* maximum size of data in work row */
550 mng_int32 iFilterofs; /* offset to filter-byte in work row */
551 mng_int32 iPixelofs; /* offset to pixel-bytes in work row */
552 mng_uint32 iLevel0; /* leveling variables */
553 mng_uint32 iLevel1;
554 mng_uint32 iLevel2;
555 mng_uint32 iLevel3;
556 mng_uint8p pWorkrow; /* working row of pixel-data */
557 mng_uint8p pPrevrow; /* previous row of pixel-data */
558 mng_uint8p pRGBArow; /* intermediate row of RGBA8 or RGBA16 data */
559 mng_bool bIsRGBA16; /* indicates intermediate row is RGBA16 */
560 mng_bool bIsOpaque; /* indicates intermediate row is fully opaque */
561 mng_int32 iFilterbpp; /* bpp index for filtering routines */
562
563 mng_int32 iSourcel; /* variables for showing objects */
564 mng_int32 iSourcer;
565 mng_int32 iSourcet;
566 mng_int32 iSourceb;
567 mng_int32 iDestl;
568 mng_int32 iDestr;
569 mng_int32 iDestt;
570 mng_int32 iDestb;
571
572 mng_objectp pFirstimgobj; /* double-linked list of */
573 mng_objectp pLastimgobj; /* image-object structures */
574 mng_objectp pFirstaniobj; /* double-linked list of */
575 mng_objectp pLastaniobj; /* animation-object structures */
576#ifdef MNG_SUPPORT_DYNAMICMNG
577 mng_objectp pFirstevent; /* double-linked list of */
578 mng_objectp pLastevent; /* event-object structures */
579#endif
580
581#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS)
582 mng_uint8 aGammatab[256]; /* precomputed gamma lookup table */
583 mng_float dLastgamma; /* last gamma used to compute table */
584#endif
585
586 mng_fptr fDisplayrow; /* internal callback to display an
587 uncompressed/unfiltered/
588 color-corrected row */
589 mng_fptr fRestbkgdrow; /* internal callback for restore-
590 background processing of a row */
591 mng_fptr fCorrectrow; /* internal callback to color-correct an
592 uncompressed/unfiltered row */
593 mng_fptr fRetrieverow; /* internal callback to retrieve an
594 uncompressed/unfiltered row of data */
595 mng_fptr fStorerow; /* internal callback to store an
596 uncompressed/unfiltered row of data */
597 mng_fptr fProcessrow; /* internal callback to process an
598 uncompressed row of data */
599 mng_fptr fDifferrow; /* internal callback to perform
600 added filter leveling and
601 differing on an unfiltered row */
602 mng_fptr fScalerow; /* internal callback to scale a
603 delta-row to the bitdepth of its target */
604 mng_fptr fDeltarow; /* internal callback to execute a
605 delta-row onto a target */
606#ifndef MNG_SKIPCHUNK_PAST
607 mng_fptr fFliprow; /* internal callback to flip a row of pixels
608 left<->right for a PAST operation */
609 mng_fptr fTilerow; /* internal callback to tile a row of pixels
610 during a PAST operation */
611#endif
612 mng_fptr fInitrowproc; /* internal callback to initialize
613 the row processing */
614
615 mng_uint16 iDEFIobjectid; /* DEFI fields */
616 mng_bool bDEFIhasdonotshow;
617 mng_uint8 iDEFIdonotshow;
618 mng_bool bDEFIhasconcrete;
619 mng_uint8 iDEFIconcrete;
620 mng_bool bDEFIhasloca;
621 mng_int32 iDEFIlocax;
622 mng_int32 iDEFIlocay;
623 mng_bool bDEFIhasclip;
624 mng_int32 iDEFIclipl;
625 mng_int32 iDEFIclipr;
626 mng_int32 iDEFIclipt;
627 mng_int32 iDEFIclipb;
628
629 mng_uint16 iBACKred; /* BACK fields */
630 mng_uint16 iBACKgreen;
631 mng_uint16 iBACKblue;
632 mng_uint8 iBACKmandatory;
633 mng_uint16 iBACKimageid;
634 mng_uint8 iBACKtile;
635
636 mng_int32 iBackimgoffsx; /* temp variables for restore_bkgd */
637 mng_int32 iBackimgoffsy;
638 mng_uint32 iBackimgwidth;
639 mng_uint32 iBackimgheight;
640
641#ifndef MNG_SKIPCHUNK_FRAM
642 mng_uint8 iFRAMmode; /* FRAM fields (global) */
643 mng_uint32 iFRAMdelay;
644 mng_uint32 iFRAMtimeout;
645 mng_bool bFRAMclipping;
646 mng_int32 iFRAMclipl;
647 mng_int32 iFRAMclipr;
648 mng_int32 iFRAMclipt;
649 mng_int32 iFRAMclipb;
650
651 mng_uint8 iFramemode; /* current subframe variables */
652 mng_uint32 iFramedelay;
653 mng_uint32 iFrametimeout;
654 mng_bool bFrameclipping;
655 mng_int32 iFrameclipl;
656 mng_int32 iFrameclipr;
657 mng_int32 iFrameclipt;
658 mng_int32 iFrameclipb;
659
660 mng_uint32 iNextdelay; /* delay *after* next image */
661
662 mng_bool bForcedelay;
663 mng_uint32 iAccumdelay;
664#endif
665
666#ifndef MNG_SKIPCHUNK_SHOW
667 mng_uint8 iSHOWmode; /* SHOW fields */
668 mng_uint16 iSHOWfromid;
669 mng_uint16 iSHOWtoid;
670 mng_uint16 iSHOWnextid;
671 mng_int16 iSHOWskip;
672#endif
673
674 mng_uint32 iGlobalPLTEcount; /* global PLTE fields */
675 mng_rgbpaltab aGlobalPLTEentries;
676
677 mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */
678 mng_uint8arr aGlobalTRNSrawdata;
679
680 mng_uint32 iGlobalGamma; /* global gAMA fields */
681
682#ifndef MNG_SKIPCHUNK_cHRM
683 mng_uint32 iGlobalWhitepointx; /* global cHRM fields */
684 mng_uint32 iGlobalWhitepointy;
685 mng_uint32 iGlobalPrimaryredx;
686 mng_uint32 iGlobalPrimaryredy;
687 mng_uint32 iGlobalPrimarygreenx;
688 mng_uint32 iGlobalPrimarygreeny;
689 mng_uint32 iGlobalPrimarybluex;
690 mng_uint32 iGlobalPrimarybluey;
691#endif
692
693 mng_uint8 iGlobalRendintent; /* global sRGB fields */
694
695#ifndef MNG_SKIPCHUNK_iCCP
696 mng_uint32 iGlobalProfilesize; /* global iCCP fields */
697 mng_ptr pGlobalProfile;
698#endif
699
700 mng_uint16 iGlobalBKGDred; /* global bKGD fields */
701 mng_uint16 iGlobalBKGDgreen;
702 mng_uint16 iGlobalBKGDblue;
703
704 mng_ptr pDeltaImage; /* delta-image fields */
705 mng_uint8 iDeltaImagetype;
706#endif /* MNG_SUPPORT_DISPLAY */
707 mng_uint8 iDeltatype; /* need this one in read processing !! */
708#ifdef MNG_SUPPORT_DISPLAY
709 mng_uint32 iDeltaBlockwidth;
710 mng_uint32 iDeltaBlockheight;
711 mng_uint32 iDeltaBlockx;
712 mng_uint32 iDeltaBlocky;
713 mng_bool bDeltaimmediate;
714
715 mng_fptr fDeltagetrow; /* internal delta-proc callbacks */
716 mng_fptr fDeltaaddrow;
717 mng_fptr fDeltareplacerow;
718 mng_fptr fDeltaputrow;
719
720#ifndef MNG_SKIPCHUNK_PROM
721 mng_fptr fPromoterow; /* internal PROM fields */
722 mng_fptr fPromBitdepth;
723 mng_ptr pPromBuf;
724 mng_uint8 iPromColortype;
725 mng_uint8 iPromBitdepth;
726 mng_uint8 iPromFilltype;
727 mng_uint32 iPromWidth;
728 mng_ptr pPromSrc;
729 mng_ptr pPromDst;
730#endif
731
732#ifndef MNG_SKIPCHUNK_MAGN
733 mng_uint16 iMAGNfromid;
734 mng_uint16 iMAGNcurrentid;
735 mng_uint16 iMAGNtoid;
736#endif
737
738#ifndef MNG_SKIPCHUNK_PAST
739 mng_uint16 iPASTid;
740 mng_int32 iPastx; /* target x/y of last PAST */
741 mng_int32 iPasty;
742#endif
743
744 mng_objectp pLastseek; /* last processed ani_seek object */
745
746#ifdef MNG_INCLUDE_MPNG_PROPOSAL
747 mng_objectp pMPNG; /* mpNG object if available */
748#endif
749#ifdef MNG_INCLUDE_ANG_PROPOSAL
750 mng_objectp pANG; /* ANG object if available */
751#endif
752
753#endif /* MNG_SUPPORT_DISPLAY */
754
755#ifdef MNG_INCLUDE_ZLIB
756 z_stream sZlib; /* zlib (de)compression variables */
757
758 mng_int32 iZlevel; /* zlib compression parameters */
759 mng_int32 iZmethod;
760 mng_int32 iZwindowbits;
761 mng_int32 iZmemlevel;
762 mng_int32 iZstrategy;
763
764 mng_uint32 iMaxIDAT; /* maximum size of IDAT data */
765
766 mng_bool bInflating; /* indicates "inflate" in progress */
767 mng_bool bDeflating; /* indicates "deflate" in progress */
768#endif /* MNG_INCLUDE_ZLIB */
769
770#ifdef MNG_INCLUDE_JNG
771 mngjpeg_dctmethod eJPEGdctmethod; /* IJG compression variables */
772 mng_int32 iJPEGquality;
773 mng_int32 iJPEGsmoothing;
774 mng_bool bJPEGcompressprogr;
775 mng_bool bJPEGcompressopt;
776
777 mng_uint32 iMaxJDAT; /* maximum size of JDAT/JDAA data */
778
779 mngjpeg_compp pJPEGcinfo; /* compression structure */
780 mngjpeg_errorp pJPEGcerr; /* error-manager compress */
781
782 mngjpeg_decompp pJPEGdinfo; /* decompression structure (JDAT) */
783 mngjpeg_errorp pJPEGderr; /* error-manager decompress (JDAT) */
784 mngjpeg_sourcep pJPEGdsrc; /* source-manager decompress (JDAT) */
785
786 mngjpeg_decompp pJPEGdinfo2; /* decompression structure (JDAA) */
787 mngjpeg_errorp pJPEGderr2; /* error-manager decompress (JDAA) */
788 mngjpeg_sourcep pJPEGdsrc2; /* source-manager decompress (JDAA) */
789
790 mng_uint8p pJPEGbuf; /* buffer for JPEG (de)compression (JDAT) */
791 mng_uint32 iJPEGbufmax; /* allocated space for buffer (JDAT) */
792 mng_uint8p pJPEGcurrent; /* current pointer into buffer (JDAT) */
793 mng_uint32 iJPEGbufremain; /* remaining bytes in buffer (JDAT) */
794 mng_uint32 iJPEGtoskip; /* bytes to skip on next input-block (JDAT) */
795
796 mng_uint8p pJPEGbuf2; /* buffer for JPEG (de)compression (JDAA) */
797 mng_uint32 iJPEGbufmax2; /* allocated space for buffer (JDAA) */
798 mng_uint8p pJPEGcurrent2; /* current pointer into buffer (JDAA) */
799 mng_uint32 iJPEGbufremain2; /* remaining bytes in buffer (JDAA) */
800 mng_uint32 iJPEGtoskip2; /* bytes to skip on next input-block (JDAA) */
801
802 mng_uint8p pJPEGrow; /* buffer for a JPEG row of samples (JDAT) */
803 mng_uint32 iJPEGrowlen;
804
805 mng_uint8p pJPEGrow2; /* buffer for a JPEG row of samples (JDAA) */
806 mng_uint32 iJPEGrowlen2;
807
808 mng_bool bJPEGcompress; /* indicates "compress" initialized */
809
810 mng_bool bJPEGdecompress; /* indicates "decompress" initialized (JDAT) */
811 mng_bool bJPEGhasheader; /* indicates "readheader" succeeded (JDAT) */
812 mng_bool bJPEGdecostarted; /* indicates "decompress" started (JDAT) */
813 mng_bool bJPEGscanstarted; /* indicates "first scan" started (JDAT) */
814 mng_bool bJPEGscanending; /* indicates "finish_output" suspended (JDAT) */
815 mng_bool bJPEGprogressive; /* indicates a progressive image (JDAT) */
816
817 mng_bool bJPEGdecompress2; /* indicates "decompress" initialized (JDAA) */
818 mng_bool bJPEGhasheader2; /* indicates "readheader" succeeded (JDAA) */
819 mng_bool bJPEGdecostarted2; /* indicates "decompress" started (JDAA) */
820 mng_bool bJPEGscanstarted2; /* indicates "first scan" started (JDAA) */
821 mng_bool bJPEGprogressive2; /* indicates a progressive image (JDAA) */
822
823 mng_fptr fStorerow2; /* internal callback to store an
824 uncompressed/unfiltered row of JPEG-data (JDAT) */
825
826 mng_fptr fStorerow3; /* internal callback to store an
827 uncompressed/unfiltered row of JPEG-data (JDAA) */
828
829 mng_uint32 iJPEGrow; /* row-number for current JPEG row */
830 mng_uint32 iJPEGalpharow; /* nr. of rows filled with alpha */
831 mng_uint32 iJPEGrgbrow; /* nr. of rows filled with 'color'-info */
832 mng_uint32 iJPEGdisprow; /* nr. of rows already displayed "on-the-fly" */
833
834#if defined(MNG_USE_SETJMP) && defined (MNG_INCLUDE_IJG6B)
835 jmp_buf sErrorbuf; /* setjmp/longjmp buffer (error-recovery) */
836#endif
837
838#endif /* MNG_INCLUDE_JNG */
839
840#ifndef MNG_USE_ZLIB_CRC
841 mng_uint32 aCRCtable [256]; /* CRC prefab table */
842 mng_bool bCRCcomputed; /* "has been built" indicator */
843#endif
844
845#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT
846 png_imgtype ePng_imgtype;
847#endif
848
849#if defined(MNG_NO_1_2_4BIT_SUPPORT) || defined(MNG_NO_16BIT_SUPPORT)
850 mng_uint8 iPNGdepth; /* Real input depth */
851 mng_uint8 iPNGmult;
852#endif
853
854#ifdef MNG_OPTIMIZE_DISPLAYCALLS
855 mng_uint32 iRawlen; /* temp vars for display processing */
856 mng_uint8p pRawdata;
857#ifndef MNG_SKIPCHUNK_BASI
858 mng_uint16 iBASIred;
859 mng_uint16 iBASIgreen;
860 mng_uint16 iBASIblue;
861 mng_bool bBASIhasalpha;
862 mng_uint16 iBASIalpha;
863 mng_uint8 iBASIviewable;
864#endif
865#ifndef MNG_SKIPCHUNK_CLON
866 mng_uint16 iCLONsourceid;
867 mng_uint16 iCLONcloneid;
868 mng_uint8 iCLONclonetype;
869 mng_bool bCLONhasdonotshow;
870 mng_uint8 iCLONdonotshow;
871 mng_uint8 iCLONconcrete;
872 mng_bool bCLONhasloca;
873 mng_uint8 iCLONlocationtype;
874 mng_int32 iCLONlocationx;
875 mng_int32 iCLONlocationy;
876#endif
877#ifndef MNG_SKIPCHUNK_DISC
878 mng_uint32 iDISCcount;
879 mng_uint16p pDISCids;
880#endif
881#ifndef MNG_SKIPCHUNK_FRAM
882 mng_uint8 iTempFramemode;
883 mng_uint8 iTempChangedelay;
884 mng_uint32 iTempDelay;
885 mng_uint8 iTempChangetimeout;
886 mng_uint32 iTempTimeout;
887 mng_uint8 iTempChangeclipping;
888 mng_uint8 iTempCliptype;
889 mng_int32 iTempClipl;
890 mng_int32 iTempClipr;
891 mng_int32 iTempClipt;
892 mng_int32 iTempClipb;
893#endif
894#ifndef MNG_SKIPCHUNK_MOVE
895 mng_uint16 iMOVEfromid;
896 mng_uint16 iMOVEtoid;
897 mng_uint8 iMOVEmovetype;
898 mng_int32 iMOVEmovex;
899 mng_int32 iMOVEmovey;
900#endif
901#ifndef MNG_SKIPCHUNK_CLIP
902 mng_uint16 iCLIPfromid;
903 mng_uint16 iCLIPtoid;
904 mng_uint8 iCLIPcliptype;
905 mng_int32 iCLIPclipl;
906 mng_int32 iCLIPclipr;
907 mng_int32 iCLIPclipt;
908 mng_int32 iCLIPclipb;
909#endif
910#ifndef MNG_NO_DELTA_PNG
911 mng_uint16 iDHDRobjectid;
912 mng_uint8 iDHDRimagetype;
913 mng_uint8 iDHDRdeltatype;
914 mng_uint32 iDHDRblockwidth;
915 mng_uint32 iDHDRblockheight;
916 mng_uint32 iDHDRblockx;
917 mng_uint32 iDHDRblocky;
918 mng_uint8 iPROMbitdepth;
919 mng_uint8 iPROMcolortype;
920 mng_uint8 iPROMfilltype;
921 mng_uint8 iPPLTtype;
922 mng_uint32 iPPLTcount;
923 mng_palette8ep paPPLTindexentries;
924 mng_uint8p paPPLTalphaentries;
925 mng_uint8p paPPLTusedentries;
926#endif
927#ifndef MNG_SKIPCHUNK_MAGN
928 mng_uint16 iMAGNfirstid;
929 mng_uint16 iMAGNlastid;
930 mng_uint8 iMAGNmethodX;
931 mng_uint16 iMAGNmX;
932 mng_uint16 iMAGNmY;
933 mng_uint16 iMAGNmL;
934 mng_uint16 iMAGNmR;
935 mng_uint16 iMAGNmT;
936 mng_uint16 iMAGNmB;
937 mng_uint8 iMAGNmethodY;
938#endif
939#ifndef MNG_SKIPCHUNK_PAST
940 mng_uint16 iPASTtargetid;
941 mng_uint8 iPASTtargettype;
942 mng_int32 iPASTtargetx;
943 mng_int32 iPASTtargety;
944 mng_uint32 iPASTcount;
945 mng_ptr pPASTsources;
946#endif
947#endif /* MNG_OPTIMIZE_DISPLAYCALLS */
948
949 } mng_data;
950
951typedef mng_data * mng_datap;
952
953/* ************************************************************************** */
954/* * * */
955/* * Internal Callback-Function prototypes * */
956/* * * */
957/* ************************************************************************** */
958
959typedef mng_retcode(*mng_displayrow) (mng_datap pData);
960typedef mng_retcode(*mng_restbkgdrow) (mng_datap pData);
961typedef mng_retcode(*mng_correctrow) (mng_datap pData);
962typedef mng_retcode(*mng_retrieverow) (mng_datap pData);
963typedef mng_retcode(*mng_storerow) (mng_datap pData);
964typedef mng_retcode(*mng_processrow) (mng_datap pData);
965typedef mng_retcode(*mng_initrowproc) (mng_datap pData);
966typedef mng_retcode(*mng_differrow) (mng_datap pData);
967typedef mng_retcode(*mng_scalerow) (mng_datap pData);
968typedef mng_retcode(*mng_deltarow) (mng_datap pData);
969typedef mng_retcode(*mng_promoterow) (mng_datap pData);
970typedef mng_retcode(*mng_fliprow) (mng_datap pData);
971typedef mng_retcode(*mng_tilerow) (mng_datap pData);
972
973typedef mng_uint8 (*mng_bitdepth_8) (mng_uint8 iB);
974typedef mng_uint16 (*mng_bitdepth_16) (mng_uint8 iB);
975
976typedef mng_retcode(*mng_magnify_x) (mng_datap pData,
977 mng_uint16 iMX,
978 mng_uint16 iML,
979 mng_uint16 iMR,
980 mng_uint32 iWidth,
981 mng_uint8p iSrcline,
982 mng_uint8p iDstline);
983typedef mng_retcode(*mng_magnify_y) (mng_datap pData,
984 mng_int32 iM,
985 mng_int32 iS,
986 mng_uint32 iWidth,
987 mng_uint8p iSrcline1,
988 mng_uint8p iSrcline2,
989 mng_uint8p iDstline);
990
991/* ************************************************************************** */
992/* * * */
993/* * Routines for swapping byte-order from and to graphic files * */
994/* * (This code is adapted from the libpng package) * */
995/* * * */
996/* ************************************************************************** */
997
998#ifndef MNG_BIGENDIAN_SUPPORTED
999mng_uint32 mng_get_uint32 (mng_uint8p pBuf);
1000mng_int32 mng_get_int32 (mng_uint8p pBuf);
1001mng_uint16 mng_get_uint16 (mng_uint8p pBuf);
1002void mng_put_uint32 (mng_uint8p pBuf,
1003 mng_uint32 i);
1004void mng_put_int32 (mng_uint8p pBuf,
1005 mng_int32 i);
1006void mng_put_uint16 (mng_uint8p pBuf,
1007 mng_uint16 i);
1008#else /* MNG_BIGENDIAN_SUPPORTED */
1009#define mng_get_uint32(P) *(mng_uint32p)(P)
1010#define mng_get_int32(P) *(mng_int32p)(P)
1011#define mng_get_uint16(P) *(mng_uint16p)(P)
1012#define mng_put_uint32(P,I) *(mng_uint32p)(P) = (I)
1013#define mng_put_int32(P,I) *(mng_int32p)(P) = (I)
1014#define mng_put_uint16(P,I) *(mng_uint16p)(P) = (I)
1015#endif /* MNG_BIGENDIAN_SUPPORTED */
1016
1017/* ************************************************************************** */
1018/* * * */
1019/* * Some handy(?) macro definitions * */
1020/* * * */
1021/* ************************************************************************** */
1022
1023#define MAX_COORD(a, b) (((a) > (b)) ? (a) : (b))
1024#define MIN_COORD(a, b) (((a) < (b)) ? (a) : (b))
1025
1026/* ************************************************************************** */
1027
1028#endif /* _libmng_data_h_ */
1029
1030/* ************************************************************************** */
1031/* * end of file * */
1032/* ************************************************************************** */
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