source: trunk/src/3rdparty/libmng/libmng_hlapi.c@ 890

Last change on this file since 890 was 2, checked in by Dmitry A. Kuminov, 17 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 108.3 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_hlapi.c copyright (c) 2000-2007 G.Juyn * */
8/* * version : 1.0.10 * */
9/* * * */
10/* * purpose : high-level application API (implementation) * */
11/* * * */
12/* * author : G.Juyn * */
13/* * * */
14/* * comment : implementation of the high-level function interface * */
15/* * for applications. * */
16/* * * */
17/* * changes : 0.5.1 - 05/06/2000 - G.Juyn * */
18/* * - added init of iPLTEcount * */
19/* * 0.5.1 - 05/08/2000 - G.Juyn * */
20/* * - changed calling-convention definition * */
21/* * - changed status-handling of display-routines * */
22/* * - added versioning-control routines * */
23/* * - filled the write routine * */
24/* * - changed strict-ANSI stuff * */
25/* * 0.5.1 - 05/11/2000 - G.Juyn * */
26/* * - added callback error-reporting support * */
27/* * 0.5.1 - 05/12/2000 - G.Juyn * */
28/* * - changed trace to macro for callback error-reporting * */
29/* * 0.5.1 - 05/13/2000 - G.Juyn * */
30/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
31/* * - added TERM animation object pointer (easier reference) * */
32/* * 0.5.1 - 05/14/2000 - G.Juyn * */
33/* * - added cleanup of saved-data (SAVE/SEEK processing) * */
34/* * 0.5.1 - 05/16/2000 - G.Juyn * */
35/* * - moved the actual write_graphic functionality from here * */
36/* * to its appropriate function in the mng_write module * */
37/* * * */
38/* * 0.5.2 - 05/19/2000 - G.Juyn * */
39/* * - cleaned up some code regarding mixed support * */
40/* * - added JNG support * */
41/* * 0.5.2 - 05/24/2000 - G.Juyn * */
42/* * - moved init of default zlib parms here from "mng_zlib.c" * */
43/* * - added init of default IJG parms * */
44/* * 0.5.2 - 05/29/2000 - G.Juyn * */
45/* * - fixed inconsistancy with freeing global iCCP profile * */
46/* * 0.5.2 - 05/30/2000 - G.Juyn * */
47/* * - added delta-image field initialization * */
48/* * 0.5.2 - 06/06/2000 - G.Juyn * */
49/* * - added initialization of the buffer-suspend parameter * */
50/* * * */
51/* * 0.5.3 - 06/16/2000 - G.Juyn * */
52/* * - added initialization of update-region for refresh * */
53/* * - added initialization of Needrefresh parameter * */
54/* * 0.5.3 - 06/17/2000 - G.Juyn * */
55/* * - added initialization of Deltaimmediate * */
56/* * 0.5.3 - 06/21/2000 - G.Juyn * */
57/* * - added initialization of Speed * */
58/* * - added initialization of Imagelevel * */
59/* * 0.5.3 - 06/26/2000 - G.Juyn * */
60/* * - changed userdata variable to mng_ptr * */
61/* * 0.5.3 - 06/29/2000 - G.Juyn * */
62/* * - fixed initialization routine for new mng_handle type * */
63/* * * */
64/* * 0.9.1 - 07/06/2000 - G.Juyn * */
65/* * - changed mng_display_resume to allow to be called after * */
66/* * a suspension return with MNG_NEEDMOREDATA * */
67/* * - added returncode MNG_NEEDTIMERWAIT for timer breaks * */
68/* * 0.9.1 - 07/07/2000 - G.Juyn * */
69/* * - implemented support for freeze/reset/resume & go_xxxx * */
70/* * 0.9.1 - 07/08/2000 - G.Juyn * */
71/* * - added support for improved timing * */
72/* * - added support for improved I/O-suspension * */
73/* * 0.9.1 - 07/14/2000 - G.Juyn * */
74/* * - changed EOF processing behavior * */
75/* * 0.9.1 - 07/15/2000 - G.Juyn * */
76/* * - added callbacks for SAVE/SEEK processing * */
77/* * - added variable for NEEDSECTIONWAIT breaks * */
78/* * - added variable for freeze & reset processing * */
79/* * 0.9.1 - 07/17/2000 - G.Juyn * */
80/* * - added error cleanup processing * */
81/* * - fixed support for mng_display_reset() * */
82/* * - fixed suspension-buffering for 32K+ chunks * */
83/* * * */
84/* * 0.9.2 - 07/29/2000 - G.Juyn * */
85/* * - fixed small bugs in display processing * */
86/* * 0.9.2 - 07/31/2000 - G.Juyn * */
87/* * - fixed wrapping of suspension parameters * */
88/* * 0.9.2 - 08/04/2000 - G.Juyn * */
89/* * - B111096 - fixed large-buffer read-suspension * */
90/* * 0.9.2 - 08/05/2000 - G.Juyn * */
91/* * - changed file-prefixes * */
92/* * * */
93/* * 0.9.3 - 09/07/2000 - G.Juyn * */
94/* * - added support for new filter_types * */
95/* * 0.9.3 - 09/10/2000 - G.Juyn * */
96/* * - fixed DEFI behavior * */
97/* * 0.9.3 - 10/11/2000 - G.Juyn * */
98/* * - added support for nEED * */
99/* * 0.9.3 - 10/16/2000 - G.Juyn * */
100/* * - added optional support for bKGD for PNG images * */
101/* * - raised initial maximum canvas size * */
102/* * - added support for JDAA * */
103/* * 0.9.3 - 10/17/2000 - G.Juyn * */
104/* * - added callback to process non-critical unknown chunks * */
105/* * - fixed support for delta-images during read() / display() * */
106/* * 0.9.3 - 10/18/2000 - G.Juyn * */
107/* * - added closestream() processing for mng_cleanup() * */
108/* * 0.9.3 - 10/27/2000 - G.Juyn * */
109/* * - fixed separate read() & display() processing * */
110/* * * */
111/* * 0.9.4 - 11/20/2000 - G.Juyn * */
112/* * - fixed unwanted repetition in mng_readdisplay() * */
113/* * 0.9.4 - 11/24/2000 - G.Juyn * */
114/* * - moved restore of object 0 to libmng_display * */
115/* * * */
116/* * 1.0.1 - 02/08/2001 - G.Juyn * */
117/* * - added MEND processing callback * */
118/* * 1.0.1 - 02/13/2001 - G.Juyn * */
119/* * - fixed first FRAM_MODE=4 timing problem * */
120/* * 1.0.1 - 04/21/2001 - G.Juyn * */
121/* * - fixed bug with display_reset/display_resume (Thanks G!) * */
122/* * 1.0.1 - 04/22/2001 - G.Juyn * */
123/* * - fixed memory-leak (Thanks Gregg!) * */
124/* * 1.0.1 - 04/23/2001 - G.Juyn * */
125/* * - fixed reset_rundata to drop all objects * */
126/* * 1.0.1 - 04/25/2001 - G.Juyn * */
127/* * - moved mng_clear_cms to libmng_cms * */
128/* * * */
129/* * 1.0.2 - 06/23/2001 - G.Juyn * */
130/* * - added optimization option for MNG-video playback * */
131/* * - added processterm callback * */
132/* * 1.0.2 - 06/25/2001 - G.Juyn * */
133/* * - added option to turn off progressive refresh * */
134/* * * */
135/* * 1.0.5 - 07/08/2002 - G.Juyn * */
136/* * - B578572 - removed eMNGma hack (thanks Dimitri!) * */
137/* * 1.0.5 - 07/16/2002 - G.Juyn * */
138/* * - B581625 - large chunks fail with suspension reads * */
139/* * 1.0.5 - 08/19/2002 - G.Juyn * */
140/* * - B597134 - libmng pollutes the linker namespace * */
141/* * 1.0.5 - 09/15/2002 - G.Juyn * */
142/* * - fixed LOOP iteration=0 special case * */
143/* * 1.0.5 - 10/07/2002 - G.Juyn * */
144/* * - added another fix for misplaced TERM chunk * */
145/* * - completed support for condition=2 in TERM chunk * */
146/* * - added beta version function & constant * */
147/* * 1.0.5 - 10/11/2002 - G.Juyn * */
148/* * - added mng_status_dynamic to supports function * */
149/* * 1.0.5 - 11/04/2002 - G.Juyn * */
150/* * - changed FRAMECOUNT/LAYERCOUNT/PLAYTIME error to warning * */
151/* * 1.0.5 - 11/07/2002 - G.Juyn * */
152/* * - added support to get totals after mng_read() * */
153/* * 1.0.5 - 11/29/2002 - G.Juyn * */
154/* * - fixed goxxxxx() support for zero values * */
155/* * * */
156/* * 1.0.6 - 05/25/2003 - G.R-P * */
157/* * - added MNG_SKIPCHUNK_cHNK footprint optimizations * */
158/* * 1.0.6 - 07/11/2003 - G.R-P * */
159/* * - added conditionals zlib and jpeg property accessors * */
160/* * 1.0.6 - 07/14/2003 - G.R-P * */
161/* * - added conditionals around "mng_display_go*" and other * */
162/* * unused functions * */
163/* * 1.0.6 - 07/29/2003 - G.R-P * */
164/* * - added conditionals around PAST chunk support * */
165/* * * */
166/* * 1.0.7 - 03/07/2004 - G. Randers-Pehrson * */
167/* * - put gamma, cms-related declarations inside #ifdef * */
168/* * 1.0.7 - 03/10/2004 - G.R-P * */
169/* * - added conditionals around openstream/closestream * */
170/* * 1.0.7 - 03/24/2004 - G.R-P * */
171/* * - fixed zTXT -> zTXt typo * */
172/* * * */
173/* * 1.0.8 - 04/02/2004 - G.Juyn * */
174/* * - added CRC existence & checking flags * */
175/* * 1.0.8 - 04/10/2004 - G.Juyn * */
176/* * - added data-push mechanisms for specialized decoders * */
177/* * 1.0.8 - 07/06/2004 - G.R-P * */
178/* * - defend against using undefined openstream function * */
179/* * 1.0.8 - 08/02/2004 - G.Juyn * */
180/* * - added conditional to allow easier writing of large MNG's * */
181/* * * */
182/* * 1.0.9 - 08/17/2004 - G.R-P * */
183/* * - added more SKIPCHUNK conditionals * */
184/* * 1.0.9 - 09/25/2004 - G.Juyn * */
185/* * - replaced MNG_TWEAK_LARGE_FILES with permanent solution * */
186/* * 1.0.9 - 10/03/2004 - G.Juyn * */
187/* * - added function to retrieve current FRAM delay * */
188/* * 1.0.9 - 12/20/2004 - G.Juyn * */
189/* * - cleaned up macro-invocations (thanks to D. Airlie) * */
190/* * * */
191/* * 1.0.10 - 07/06/2005 - G.R-P * */
192/* * - added more SKIPCHUNK conditionals * */
193/* * 1.0.10 - 04/08/2007 - G.Juyn * */
194/* * - added support for mPNG proposal * */
195/* * 1.0.10 - 04/12/2007 - G.Juyn * */
196/* * - added support for ANG proposal * */
197/* * 1.0.10 - 07/06/2007 - G.R-P bugfix by Lucas Quintana * */
198/* * * */
199/* ************************************************************************** */
200
201#include "libmng.h"
202#include "libmng_data.h"
203#include "libmng_error.h"
204#include "libmng_trace.h"
205#ifdef __BORLANDC__
206#pragma hdrstop
207#endif
208#include "libmng_objects.h"
209#include "libmng_object_prc.h"
210#include "libmng_chunks.h"
211#include "libmng_memory.h"
212#include "libmng_read.h"
213#include "libmng_write.h"
214#include "libmng_display.h"
215#include "libmng_zlib.h"
216#include "libmng_jpeg.h"
217#include "libmng_cms.h"
218#include "libmng_pixels.h"
219
220#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
221#pragma option -A /* force ANSI-C */
222#endif
223
224/* ************************************************************************** */
225/* * * */
226/* * local routines * */
227/* * * */
228/* ************************************************************************** */
229
230#ifdef MNG_SUPPORT_DISPLAY
231MNG_LOCAL mng_retcode mng_drop_objects (mng_datap pData,
232 mng_bool bDropaniobj)
233{
234 mng_objectp pObject;
235 mng_objectp pNext;
236 mng_cleanupobject fCleanup;
237
238#ifdef MNG_SUPPORT_TRACE
239 MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_START);
240#endif
241
242 pObject = pData->pFirstimgobj; /* get first stored image-object (if any) */
243
244 while (pObject) /* more objects to discard ? */
245 {
246 pNext = ((mng_object_headerp)pObject)->pNext;
247 /* call appropriate cleanup */
248 fCleanup = ((mng_object_headerp)pObject)->fCleanup;
249 fCleanup (pData, pObject);
250
251 pObject = pNext; /* neeeext */
252 }
253
254 pData->pFirstimgobj = MNG_NULL; /* clean this up!!! */
255 pData->pLastimgobj = MNG_NULL;
256
257 if (bDropaniobj) /* drop animation objects ? */
258 {
259 pObject = pData->pFirstaniobj; /* get first stored animation-object (if any) */
260
261 while (pObject) /* more objects to discard ? */
262 {
263 pNext = ((mng_object_headerp)pObject)->pNext;
264 /* call appropriate cleanup */
265 fCleanup = ((mng_object_headerp)pObject)->fCleanup;
266 fCleanup (pData, pObject);
267
268 pObject = pNext; /* neeeext */
269 }
270
271 pData->pFirstaniobj = MNG_NULL; /* clean this up!!! */
272 pData->pLastaniobj = MNG_NULL;
273
274#ifdef MNG_SUPPORT_DYNAMICMNG
275 pObject = pData->pFirstevent; /* get first event-object (if any) */
276
277 while (pObject) /* more objects to discard ? */
278 {
279 pNext = ((mng_object_headerp)pObject)->pNext;
280 /* call appropriate cleanup */
281 fCleanup = ((mng_object_headerp)pObject)->fCleanup;
282 fCleanup (pData, pObject);
283
284 pObject = pNext; /* neeeext */
285 }
286
287 pData->pFirstevent = MNG_NULL; /* clean this up!!! */
288 pData->pLastevent = MNG_NULL;
289#endif
290 }
291
292#ifdef MNG_INCLUDE_MPNG_PROPOSAL
293 if (pData->pMPNG) /* drop MPNG data (if any) */
294 {
295 fCleanup = ((mng_object_headerp)pData->pMPNG)->fCleanup;
296 fCleanup (pData, pData->pMPNG);
297 pData->pMPNG = MNG_NULL;
298 }
299#endif
300
301#ifdef MNG_INCLUDE_ANG_PROPOSAL
302 if (pData->pANG) /* drop ANG data (if any) */
303 {
304 fCleanup = ((mng_object_headerp)pData->pANG)->fCleanup;
305 fCleanup (pData, pData->pANG);
306 pData->pANG = MNG_NULL;
307 }
308#endif
309
310#ifdef MNG_SUPPORT_TRACE
311 MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_END);
312#endif
313
314 return MNG_NOERROR;
315}
316#endif /* MNG_SUPPORT_DISPLAY */
317
318/* ************************************************************************** */
319
320#ifdef MNG_SUPPORT_DISPLAY
321#ifndef MNG_SKIPCHUNK_SAVE
322MNG_LOCAL mng_retcode mng_drop_savedata (mng_datap pData)
323{
324#ifdef MNG_SUPPORT_TRACE
325 MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_START);
326#endif
327
328 if (pData->pSavedata) /* sanity check */
329 { /* address it more directly */
330 mng_savedatap pSave = pData->pSavedata;
331
332 if (pSave->iGlobalProfilesize) /* cleanup the profile ? */
333 MNG_FREEX (pData, pSave->pGlobalProfile, pSave->iGlobalProfilesize);
334 /* cleanup the save structure */
335 MNG_FREE (pData, pData->pSavedata, sizeof (mng_savedata));
336 }
337
338#ifdef MNG_SUPPORT_TRACE
339 MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_END);
340#endif
341
342 return MNG_NOERROR;
343}
344#endif
345#endif /* MNG_SUPPORT_DISPLAY */
346
347/* ************************************************************************** */
348
349#ifdef MNG_SUPPORT_DISPLAY
350MNG_LOCAL mng_retcode mng_reset_rundata (mng_datap pData)
351{
352 mng_drop_invalid_objects (pData); /* drop invalidly stored objects */
353#ifndef MNG_SKIPCHUNK_SAVE
354 mng_drop_savedata (pData); /* drop stored savedata */
355#endif
356 mng_reset_objzero (pData); /* reset object 0 */
357 /* drop stored objects (if any) */
358 mng_drop_objects (pData, MNG_FALSE);
359
360 pData->bFramedone = MNG_FALSE;
361 pData->iFrameseq = 0; /* reset counters & stuff */
362 pData->iLayerseq = 0;
363 pData->iFrametime = 0;
364
365 pData->bSkipping = MNG_FALSE;
366
367#ifdef MNG_SUPPORT_DYNAMICMNG
368 pData->bRunningevent = MNG_FALSE;
369 pData->bStopafterseek = MNG_FALSE;
370 pData->iEventx = 0;
371 pData->iEventy = 0;
372 pData->pLastmousemove = MNG_NULL;
373#endif
374
375 pData->iRequestframe = 0;
376 pData->iRequestlayer = 0;
377 pData->iRequesttime = 0;
378 pData->bSearching = MNG_FALSE;
379
380 pData->iRuntime = 0;
381 pData->iSynctime = 0;
382 pData->iStarttime = 0;
383 pData->iEndtime = 0;
384 pData->bRunning = MNG_FALSE;
385 pData->bTimerset = MNG_FALSE;
386 pData->iBreakpoint = 0;
387 pData->bSectionwait = MNG_FALSE;
388 pData->bFreezing = MNG_FALSE;
389 pData->bResetting = MNG_FALSE;
390 pData->bNeedrefresh = MNG_FALSE;
391 pData->bOnlyfirstframe = MNG_FALSE;
392 pData->iFramesafterTERM = 0;
393
394 pData->iIterations = 0;
395 /* start of animation objects! */
396 pData->pCurraniobj = MNG_NULL;
397
398 pData->iUpdateleft = 0; /* reset region */
399 pData->iUpdateright = 0;
400 pData->iUpdatetop = 0;
401 pData->iUpdatebottom = 0;
402 pData->iPLTEcount = 0; /* reset PLTE data */
403
404#ifndef MNG_SKIPCHUNK_DEFI
405 pData->iDEFIobjectid = 0; /* reset DEFI data */
406 pData->bDEFIhasdonotshow = MNG_FALSE;
407 pData->iDEFIdonotshow = 0;
408 pData->bDEFIhasconcrete = MNG_FALSE;
409 pData->iDEFIconcrete = 0;
410 pData->bDEFIhasloca = MNG_FALSE;
411 pData->iDEFIlocax = 0;
412 pData->iDEFIlocay = 0;
413 pData->bDEFIhasclip = MNG_FALSE;
414 pData->iDEFIclipl = 0;
415 pData->iDEFIclipr = 0;
416 pData->iDEFIclipt = 0;
417 pData->iDEFIclipb = 0;
418#endif
419
420#ifndef MNG_SKIPCHUNK_BACK
421 pData->iBACKred = 0; /* reset BACK data */
422 pData->iBACKgreen = 0;
423 pData->iBACKblue = 0;
424 pData->iBACKmandatory = 0;
425 pData->iBACKimageid = 0;
426 pData->iBACKtile = 0;
427#endif
428
429#ifndef MNG_SKIPCHUNK_FRAM
430 pData->iFRAMmode = 1; /* default global FRAM variables */
431 pData->iFRAMdelay = 1;
432 pData->iFRAMtimeout = 0x7fffffffl;
433 pData->bFRAMclipping = MNG_FALSE;
434 pData->iFRAMclipl = 0;
435 pData->iFRAMclipr = 0;
436 pData->iFRAMclipt = 0;
437 pData->iFRAMclipb = 0;
438
439 pData->iFramemode = 1; /* again for the current frame */
440 pData->iFramedelay = 1;
441 pData->iFrametimeout = 0x7fffffffl;
442 pData->bFrameclipping = MNG_FALSE;
443 pData->iFrameclipl = 0;
444 pData->iFrameclipr = 0;
445 pData->iFrameclipt = 0;
446 pData->iFrameclipb = 0;
447
448 pData->iNextdelay = 1;
449
450 pData->bForcedelay = MNG_FALSE;
451 pData->iAccumdelay = 0;
452#endif
453
454#ifndef MNG_SKIPCHUNK_SHOW
455 pData->iSHOWmode = 0; /* reset SHOW data */
456 pData->iSHOWfromid = 0;
457 pData->iSHOWtoid = 0;
458 pData->iSHOWnextid = 0;
459 pData->iSHOWskip = 0;
460#endif
461
462 pData->iGlobalPLTEcount = 0; /* reset global PLTE data */
463
464 pData->iGlobalTRNSrawlen = 0; /* reset global tRNS data */
465
466 pData->iGlobalGamma = 0; /* reset global gAMA data */
467
468#ifndef MNG_SKIPCHUNK_cHRM
469 pData->iGlobalWhitepointx = 0; /* reset global cHRM data */
470 pData->iGlobalWhitepointy = 0;
471 pData->iGlobalPrimaryredx = 0;
472 pData->iGlobalPrimaryredy = 0;
473 pData->iGlobalPrimarygreenx = 0;
474 pData->iGlobalPrimarygreeny = 0;
475 pData->iGlobalPrimarybluex = 0;
476 pData->iGlobalPrimarybluey = 0;
477#endif
478
479#ifndef MNG_SKIPCHUNK_sRGB
480 pData->iGlobalRendintent = 0; /* reset global sRGB data */
481#endif
482
483#ifndef MNG_SKIPCHUNK_iCCP
484 if (pData->iGlobalProfilesize) /* drop global profile (if any) */
485 MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize);
486
487 pData->iGlobalProfilesize = 0;
488#endif
489
490#ifndef MNG_SKIPCHUNK_bKGD
491 pData->iGlobalBKGDred = 0; /* reset global bKGD data */
492 pData->iGlobalBKGDgreen = 0;
493 pData->iGlobalBKGDblue = 0;
494#endif
495#ifndef MNG_NO_DELTA_PNG
496 /* reset delta-image */
497 pData->pDeltaImage = MNG_NULL;
498 pData->iDeltaImagetype = 0;
499 pData->iDeltatype = 0;
500 pData->iDeltaBlockwidth = 0;
501 pData->iDeltaBlockheight = 0;
502 pData->iDeltaBlockx = 0;
503 pData->iDeltaBlocky = 0;
504 pData->bDeltaimmediate = MNG_FALSE;
505
506 pData->fDeltagetrow = MNG_NULL;
507 pData->fDeltaaddrow = MNG_NULL;
508 pData->fDeltareplacerow = MNG_NULL;
509 pData->fDeltaputrow = MNG_NULL;
510
511 pData->fPromoterow = MNG_NULL;
512 pData->fPromBitdepth = MNG_NULL;
513 pData->pPromBuf = MNG_NULL;
514 pData->iPromColortype = 0;
515 pData->iPromBitdepth = 0;
516 pData->iPromFilltype = 0;
517 pData->iPromWidth = 0;
518 pData->pPromSrc = MNG_NULL;
519 pData->pPromDst = MNG_NULL;
520#endif
521
522#ifndef MNG_SKIPCHUNK_MAGN
523 pData->iMAGNfromid = 0;
524 pData->iMAGNtoid = 0;
525#endif
526
527#ifndef MNG_SKIPCHUNK_PAST
528 pData->iPastx = 0;
529 pData->iPasty = 0;
530#endif
531
532 pData->pLastseek = MNG_NULL;
533
534 return MNG_NOERROR;
535}
536#endif /* MNG_SUPPORT_DISPLAY */
537
538/* ************************************************************************** */
539
540MNG_LOCAL void cleanup_errors (mng_datap pData)
541{
542 pData->iErrorcode = MNG_NOERROR;
543 pData->iSeverity = 0;
544 pData->iErrorx1 = 0;
545 pData->iErrorx2 = 0;
546 pData->zErrortext = MNG_NULL;
547
548 return;
549}
550
551/* ************************************************************************** */
552
553#ifdef MNG_SUPPORT_READ
554MNG_LOCAL mng_retcode make_pushbuffer (mng_datap pData,
555 mng_ptr pPushdata,
556 mng_size_t iLength,
557 mng_bool bTakeownership,
558 mng_pushdatap * pPush)
559{
560 mng_pushdatap pTemp;
561
562 MNG_ALLOC (pData, pTemp, sizeof(mng_pushdata));
563
564 pTemp->pNext = MNG_NULL;
565
566 if (bTakeownership) /* are we going to own the buffer? */
567 { /* then just copy the pointer */
568 pTemp->pData = (mng_uint8p)pPushdata;
569 }
570 else
571 { /* otherwise create new buffer */
572 MNG_ALLOCX (pData, pTemp->pData, iLength);
573 if (!pTemp->pData) /* succeeded? */
574 {
575 MNG_FREEX (pData, pTemp, sizeof(mng_pushdata));
576 MNG_ERROR (pData, MNG_OUTOFMEMORY);
577 }
578 /* and copy the bytes across */
579 MNG_COPY (pTemp->pData, pPushdata, iLength);
580 }
581
582 pTemp->iLength = iLength;
583 pTemp->bOwned = bTakeownership;
584 pTemp->pDatanext = pTemp->pData;
585 pTemp->iRemaining = iLength;
586
587 *pPush = pTemp; /* return it */
588
589 return MNG_NOERROR; /* and all's well */
590}
591#endif
592
593#ifdef MNG_VERSION_QUERY_SUPPORT
594/* ************************************************************************** */
595/* * * */
596/* * Versioning control * */
597/* * * */
598/* ************************************************************************** */
599
600mng_pchar MNG_DECL mng_version_text (void)
601{
602 return MNG_VERSION_TEXT;
603}
604
605/* ************************************************************************** */
606
607mng_uint8 MNG_DECL mng_version_so (void)
608{
609 return MNG_VERSION_SO;
610}
611
612/* ************************************************************************** */
613
614mng_uint8 MNG_DECL mng_version_dll (void)
615{
616 return MNG_VERSION_DLL;
617}
618
619/* ************************************************************************** */
620
621mng_uint8 MNG_DECL mng_version_major (void)
622{
623 return MNG_VERSION_MAJOR;
624}
625
626/* ************************************************************************** */
627
628mng_uint8 MNG_DECL mng_version_minor (void)
629{
630 return MNG_VERSION_MINOR;
631}
632
633/* ************************************************************************** */
634
635mng_uint8 MNG_DECL mng_version_release (void)
636{
637 return MNG_VERSION_RELEASE;
638}
639
640/* ************************************************************************** */
641
642mng_bool MNG_DECL mng_version_beta (void)
643{
644 return MNG_VERSION_BETA;
645}
646#endif
647
648/* ************************************************************************** */
649/* * * */
650/* * 'supports' function * */
651/* * * */
652/* ************************************************************************** */
653
654#ifdef MNG_SUPPORT_FUNCQUERY
655typedef struct {
656 mng_pchar zFunction;
657 mng_uint8 iMajor; /* Major == 0 means not implemented ! */
658 mng_uint8 iMinor;
659 mng_uint8 iRelease;
660 } mng_func_entry;
661typedef mng_func_entry const * mng_func_entryp;
662
663MNG_LOCAL mng_func_entry const func_table [] =
664 { /* keep it alphabetically sorted !!!!! */
665 {"mng_cleanup", 1, 0, 0},
666 {"mng_copy_chunk", 1, 0, 5},
667 {"mng_create", 1, 0, 0},
668 {"mng_display", 1, 0, 0},
669 {"mng_display_freeze", 1, 0, 0},
670#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
671 {"mng_display_goframe", 1, 0, 0},
672 {"mng_display_golayer", 1, 0, 0},
673 {"mng_display_gotime", 1, 0, 0},
674#endif
675 {"mng_display_reset", 1, 0, 0},
676 {"mng_display_resume", 1, 0, 0},
677 {"mng_get_alphabitdepth", 1, 0, 0},
678 {"mng_get_alphacompression", 1, 0, 0},
679 {"mng_get_alphadepth", 1, 0, 0},
680 {"mng_get_alphafilter", 1, 0, 0},
681 {"mng_get_alphainterlace", 1, 0, 0},
682 {"mng_get_bgcolor", 1, 0, 0},
683 {"mng_get_bitdepth", 1, 0, 0},
684 {"mng_get_bkgdstyle", 1, 0, 0},
685 {"mng_get_cacheplayback", 1, 0, 2},
686 {"mng_get_canvasstyle", 1, 0, 0},
687 {"mng_get_colortype", 1, 0, 0},
688 {"mng_get_compression", 1, 0, 0},
689#ifndef MNG_NO_CURRENT_INFO
690 {"mng_get_currentframe", 1, 0, 0},
691 {"mng_get_currentlayer", 1, 0, 0},
692 {"mng_get_currentplaytime", 1, 0, 0},
693#endif
694 {"mng_get_currframdelay", 1, 0, 9},
695#ifndef MNG_NO_DFLT_INFO
696 {"mng_get_dfltimggamma", 1, 0, 0},
697 {"mng_get_dfltimggammaint", 1, 0, 0},
698#endif
699 {"mng_get_displaygamma", 1, 0, 0},
700 {"mng_get_displaygammaint", 1, 0, 0},
701 {"mng_get_doprogressive", 1, 0, 2},
702 {"mng_get_filter", 1, 0, 0},
703 {"mng_get_framecount", 1, 0, 0},
704 {"mng_get_imageheight", 1, 0, 0},
705 {"mng_get_imagelevel", 1, 0, 0},
706 {"mng_get_imagetype", 1, 0, 0},
707 {"mng_get_imagewidth", 1, 0, 0},
708 {"mng_get_interlace", 1, 0, 0},
709#ifdef MNG_ACCESS_JPEG
710 {"mng_get_jpeg_dctmethod", 1, 0, 0},
711 {"mng_get_jpeg_maxjdat", 1, 0, 0},
712 {"mng_get_jpeg_optimized", 1, 0, 0},
713 {"mng_get_jpeg_progressive", 1, 0, 0},
714 {"mng_get_jpeg_quality", 1, 0, 0},
715 {"mng_get_jpeg_smoothing", 1, 0, 0},
716#endif
717 {"mng_get_lastbackchunk", 1, 0, 3},
718 {"mng_get_lastseekname", 1, 0, 5},
719 {"mng_get_layercount", 1, 0, 0},
720#ifndef MNG_SKIP_MAXCANVAS
721 {"mng_get_maxcanvasheight", 1, 0, 0},
722 {"mng_get_maxcanvaswidth", 1, 0, 0},
723#endif
724 {"mng_get_playtime", 1, 0, 0},
725 {"mng_get_refreshpass", 1, 0, 0},
726 {"mng_get_runtime", 1, 0, 0},
727 {"mng_get_sectionbreaks", 1, 0, 0},
728 {"mng_get_sigtype", 1, 0, 0},
729 {"mng_get_simplicity", 1, 0, 0},
730 {"mng_get_speed", 1, 0, 0},
731 {"mng_get_srgb", 1, 0, 0},
732 {"mng_get_starttime", 1, 0, 0},
733 {"mng_get_storechunks", 1, 0, 0},
734 {"mng_get_suspensionmode", 1, 0, 0},
735 {"mng_get_ticks", 1, 0, 0},
736#ifndef MNG_NO_CURRENT_INFO
737 {"mng_get_totalframes", 1, 0, 5},
738 {"mng_get_totallayers", 1, 0, 5},
739 {"mng_get_totalplaytime", 1, 0, 5},
740#endif
741 {"mng_get_usebkgd", 1, 0, 0},
742 {"mng_get_userdata", 1, 0, 0},
743#if defined(MNG_FULL_CMS) || defined(MNG_GAMMA_ONLY) || defined(MNG_APP_CMS)
744 {"mng_get_viewgamma", 1, 0, 0},
745 {"mng_get_viewgammaint", 1, 0, 0},
746#endif
747#ifdef MNG_ACCESS_ZLIB
748 {"mng_get_zlib_level", 1, 0, 0},
749 {"mng_get_zlib_maxidat", 1, 0, 0},
750 {"mng_get_zlib_memlevel", 1, 0, 0},
751 {"mng_get_zlib_method", 1, 0, 0},
752 {"mng_get_zlib_strategy", 1, 0, 0},
753 {"mng_get_zlib_windowbits", 1, 0, 0},
754#endif
755#ifndef MNG_NO_OPEN_CLOSE_STREAM
756 {"mng_getcb_closestream", 1, 0, 0},
757#endif
758 {"mng_getcb_errorproc", 1, 0, 0},
759 {"mng_getcb_getalphaline", 1, 0, 0},
760 {"mng_getcb_getbkgdline", 1, 0, 0},
761 {"mng_getcb_getcanvasline", 1, 0, 0},
762 {"mng_getcb_gettickcount", 1, 0, 0},
763 {"mng_getcb_memalloc", 1, 0, 0},
764 {"mng_getcb_memfree", 1, 0, 0},
765#ifndef MNG_NO_OPEN_CLOSE_STREAM
766 {"mng_getcb_openstream", 1, 0, 0},
767#endif
768 {"mng_getcb_processarow", 1, 0, 0},
769 {"mng_getcb_processchroma", 1, 0, 0},
770 {"mng_getcb_processgamma", 1, 0, 0},
771 {"mng_getcb_processheader", 1, 0, 0},
772 {"mng_getcb_processiccp", 1, 0, 0},
773 {"mng_getcb_processmend", 1, 0, 1},
774 {"mng_getcb_processneed", 1, 0, 0},
775 {"mng_getcb_processsave", 1, 0, 0},
776 {"mng_getcb_processseek", 1, 0, 0},
777 {"mng_getcb_processsrgb", 1, 0, 0},
778 {"mng_getcb_processterm", 1, 0, 2},
779 {"mng_getcb_processtext", 1, 0, 0},
780 {"mng_getcb_processunknown", 1, 0, 0},
781 {"mng_getcb_readdata", 1, 0, 0},
782 {"mng_getcb_refresh", 1, 0, 0},
783 {"mng_getcb_releasedata", 1, 0, 8},
784 {"mng_getcb_settimer", 1, 0, 0},
785 {"mng_getcb_traceproc", 1, 0, 0},
786 {"mng_getcb_writedata", 1, 0, 0},
787 {"mng_getchunk_back", 1, 0, 0},
788 {"mng_getchunk_basi", 1, 0, 0},
789#ifndef MNG_SKIPCHUNK_bKGD
790 {"mng_getchunk_bkgd", 1, 0, 0},
791#endif
792#ifndef MNG_SKIPCHUNK_cHRM
793 {"mng_getchunk_chrm", 1, 0, 0},
794#endif
795 {"mng_getchunk_clip", 1, 0, 0},
796 {"mng_getchunk_clon", 1, 0, 0},
797#ifndef MNG_NO_DELTA_PNG
798#ifndef MNG_SKIPCHUNK_dBYK
799 {"mng_getchunk_dbyk", 1, 0, 0},
800#endif
801#endif
802 {"mng_getchunk_defi", 1, 0, 0},
803#ifndef MNG_NO_DELTA_PNG
804 {"mng_getchunk_dhdr", 1, 0, 0},
805#endif
806 {"mng_getchunk_disc", 1, 0, 0},
807#ifndef MNG_NO_DELTA_PNG
808 {"mng_getchunk_drop", 1, 0, 0},
809#endif
810 {"mng_getchunk_endl", 1, 0, 0},
811#ifdef MNG_INCLUDE_MPNG_PROPOSAL
812 {"mng_getchunk_mpng", 1, 0, 10},
813 {"mng_getchunk_mpng_frame", 1, 0, 10},
814#endif
815#ifndef MNG_SKIPCHUNK_evNT
816 {"mng_getchunk_evnt", 1, 0, 5},
817 {"mng_getchunk_evnt_entry", 1, 0, 5},
818#endif
819#ifndef MNG_SKIPCHUNK_eXPI
820 {"mng_getchunk_expi", 1, 0, 0},
821#endif
822#ifndef MNG_SKIPCHUNK_fPRI
823 {"mng_getchunk_fpri", 1, 0, 0},
824#endif
825 {"mng_getchunk_fram", 1, 0, 0},
826 {"mng_getchunk_gama", 1, 0, 0},
827#ifndef MNG_SKIPCHUNK_hIST
828 {"mng_getchunk_hist", 1, 0, 0},
829#endif
830#ifndef MNG_SKIPCHUNK_iCCP
831 {"mng_getchunk_iccp", 1, 0, 0},
832#endif
833 {"mng_getchunk_idat", 1, 0, 0},
834 {"mng_getchunk_iend", 1, 0, 0},
835 {"mng_getchunk_ihdr", 1, 0, 0},
836#ifndef MNG_NO_DELTA_PNG
837#ifdef MNG_INCLUDE_JNG
838 {"mng_getchunk_ijng", 1, 0, 0},
839#endif
840 {"mng_getchunk_ipng", 1, 0, 0},
841#endif
842#ifndef MNG_SKIPCHUNK_iTXt
843 {"mng_getchunk_itxt", 1, 0, 0},
844#endif
845#ifdef MNG_INCLUDE_JNG
846 {"mng_getchunk_jdaa", 1, 0, 0},
847 {"mng_getchunk_jdat", 1, 0, 0},
848 {"mng_getchunk_jhdr", 1, 0, 0},
849 {"mng_getchunk_jsep", 1, 0, 0},
850#endif
851 {"mng_getchunk_loop", 1, 0, 0},
852#ifndef MNG_SKIPCHUNK_MAGN
853 {"mng_getchunk_magn", 1, 0, 0},
854#endif
855 {"mng_getchunk_mend", 1, 0, 0},
856 {"mng_getchunk_mhdr", 1, 0, 0},
857 {"mng_getchunk_move", 1, 0, 0},
858#ifndef MNG_SKIPCHUNK_nEED
859 {"mng_getchunk_need", 1, 0, 0},
860#endif
861#ifndef MNG_SKIPCHUNK_ORDR
862#ifndef MNG_NO_DELTA_PNG
863 {"mng_getchunk_ordr", 1, 0, 0},
864 {"mng_getchunk_ordr_entry", 1, 0, 0},
865#endif
866#endif
867#ifndef MNG_SKIPCHUNK_PAST
868 {"mng_getchunk_past", 1, 0, 0},
869 {"mng_getchunk_past_src", 1, 0, 0},
870#endif
871#ifndef MNG_SKIPCHUNK_pHYg
872 {"mng_getchunk_phyg", 1, 0, 0},
873#endif
874#ifndef MNG_SKIPCHUNK_pHYs
875 {"mng_getchunk_phys", 1, 0, 0},
876#endif
877#ifndef MNG_NO_DELTA_PNG
878 {"mng_getchunk_plte", 1, 0, 0},
879 {"mng_getchunk_pplt", 1, 0, 0},
880 {"mng_getchunk_pplt_entry", 1, 0, 0},
881 {"mng_getchunk_prom", 1, 0, 0},
882#endif
883#ifndef MNG_SKIPCHUNK_SAVE
884 {"mng_getchunk_save", 1, 0, 0},
885 {"mng_getchunk_save_entry", 1, 0, 0},
886#endif
887#ifndef MNG_SKIPCHUNK_sBIT
888 {"mng_getchunk_sbit", 1, 0, 0},
889#endif
890#ifndef MNG_SKIPCHUNK_SEEK
891 {"mng_getchunk_seek", 1, 0, 0},
892#endif
893 {"mng_getchunk_show", 1, 0, 0},
894#ifndef MNG_SKIPCHUNK_sPLT
895 {"mng_getchunk_splt", 1, 0, 0},
896#endif
897#ifndef MNG_SKIPCHUNK_sRGB
898 {"mng_getchunk_srgb", 1, 0, 0},
899#endif
900 {"mng_getchunk_term", 1, 0, 0},
901#ifndef MNG_SKIPCHUNK_tEXt
902 {"mng_getchunk_text", 1, 0, 0},
903#endif
904#ifndef MNG_SKIPCHUNK_tIME
905 {"mng_getchunk_time", 1, 0, 0},
906#endif
907 {"mng_getchunk_trns", 1, 0, 0},
908 {"mng_getchunk_unkown", 1, 0, 0},
909#ifndef MNG_SKIPCHUNK_zTXt
910 {"mng_getchunk_ztxt", 1, 0, 0},
911#endif
912 {"mng_getimgdata_chunk", 0, 0, 0},
913 {"mng_getimgdata_chunkseq", 0, 0, 0},
914 {"mng_getimgdata_seq", 0, 0, 0},
915 {"mng_getlasterror", 1, 0, 0},
916 {"mng_initialize", 1, 0, 0},
917 {"mng_iterate_chunks", 1, 0, 0},
918 {"mng_putchunk_back", 1, 0, 0},
919#ifndef MNG_SKIPCHUNK_BASI
920 {"mng_putchunk_basi", 1, 0, 0},
921#endif
922#ifndef MNG_SKIPCHUNK_bKGD
923 {"mng_putchunk_bkgd", 1, 0, 0},
924#endif
925#ifndef MNG_SKIPCHUNK_cHRM
926 {"mng_putchunk_chrm", 1, 0, 0},
927#endif
928 {"mng_putchunk_clip", 1, 0, 0},
929 {"mng_putchunk_clon", 1, 0, 0},
930#ifndef MNG_NO_DELTA_PNG
931#ifndef MNG_SKIPCHUNK_DBYK
932 {"mng_putchunk_dbyk", 1, 0, 0},
933#endif
934#endif
935 {"mng_putchunk_defi", 1, 0, 0},
936#ifndef MNG_NO_DELTA_PNG
937 {"mng_putchunk_dhdr", 1, 0, 0},
938#endif
939 {"mng_putchunk_disc", 1, 0, 0},
940#ifndef MNG_NO_DELTA_PNG
941 {"mng_putchunk_drop", 1, 0, 0},
942#endif
943 {"mng_putchunk_endl", 1, 0, 0},
944#ifdef MNG_INCLUDE_MPNG_PROPOSAL
945 {"mng_putchunk_mpng", 1, 0, 10},
946 {"mng_putchunk_mpng_frame", 1, 0, 10},
947#endif
948#ifndef MNG_SKIPCHUNK_evNT
949 {"mng_putchunk_evnt", 1, 0, 5},
950 {"mng_putchunk_evnt_entry", 1, 0, 5},
951#endif
952#ifndef MNG_SKIPCHUNK_eXPI
953 {"mng_putchunk_expi", 1, 0, 0},
954#endif
955#ifndef MNG_SKIPCHUNK_fPRI
956 {"mng_putchunk_fpri", 1, 0, 0},
957#endif
958#ifndef MNG_SKIPCHUNK_FRAM
959 {"mng_putchunk_fram", 1, 0, 0},
960#endif
961 {"mng_putchunk_gama", 1, 0, 0},
962#ifndef MNG_SKIPCHUNK_hIST
963 {"mng_putchunk_hist", 1, 0, 0},
964#endif
965#ifndef MNG_SKIPCHUNK_iCCP
966 {"mng_putchunk_iccp", 1, 0, 0},
967#endif
968 {"mng_putchunk_idat", 1, 0, 0},
969 {"mng_putchunk_iend", 1, 0, 0},
970 {"mng_putchunk_ihdr", 1, 0, 0},
971#ifndef MNG_NO_DELTA_PNG
972#ifdef MNG_INCLUDE_JNG
973 {"mng_putchunk_ijng", 1, 0, 0},
974#endif
975 {"mng_putchunk_ipng", 1, 0, 0},
976#endif
977#ifndef MNG_SKIPCHUNK_iTXt
978 {"mng_putchunk_itxt", 1, 0, 0},
979#endif
980#ifdef MNG_INCLUDE_JNG
981 {"mng_putchunk_jdaa", 1, 0, 0},
982 {"mng_putchunk_jdat", 1, 0, 0},
983 {"mng_putchunk_jhdr", 1, 0, 0},
984 {"mng_putchunk_jsep", 1, 0, 0},
985#endif
986 {"mng_putchunk_loop", 1, 0, 0},
987#ifndef MNG_SKIPCHUNK_MAGN
988 {"mng_putchunk_magn", 1, 0, 0},
989#endif
990 {"mng_putchunk_mend", 1, 0, 0},
991 {"mng_putchunk_mhdr", 1, 0, 0},
992 {"mng_putchunk_move", 1, 0, 0},
993#ifndef MNG_SKIPCHUNK_nEED
994 {"mng_putchunk_need", 1, 0, 0},
995#endif
996#ifndef MNG_NO_DELTA_PNG
997#ifndef MNG_SKIPCHUNK_ORDR
998 {"mng_putchunk_ordr", 1, 0, 0},
999 {"mng_putchunk_ordr_entry", 1, 0, 0},
1000#endif
1001#endif
1002#ifndef MNG_SKIPCHUNK_PAST
1003 {"mng_putchunk_past", 1, 0, 0},
1004 {"mng_putchunk_past_src", 1, 0, 0},
1005#endif
1006#ifndef MNG_SKIPCHUNK_pHYg
1007 {"mng_putchunk_phyg", 1, 0, 0},
1008#endif
1009#ifndef MNG_SKIPCHUNK_pHYs
1010 {"mng_putchunk_phys", 1, 0, 0},
1011#endif
1012#ifndef MNG_NO_DELTA_PNG
1013 {"mng_putchunk_plte", 1, 0, 0},
1014 {"mng_putchunk_pplt", 1, 0, 0},
1015 {"mng_putchunk_pplt_entry", 1, 0, 0},
1016 {"mng_putchunk_prom", 1, 0, 0},
1017#endif
1018#ifndef MNG_SKIPCHUNK_SAVE
1019 {"mng_putchunk_save", 1, 0, 0},
1020 {"mng_putchunk_save_entry", 1, 0, 0},
1021#endif
1022#ifndef MNG_SKIPCHUNK_sBIT
1023 {"mng_putchunk_sbit", 1, 0, 0},
1024#endif
1025#ifndef MNG_SKIPCHUNK_SEEK
1026 {"mng_putchunk_seek", 1, 0, 0},
1027#endif
1028 {"mng_putchunk_show", 1, 0, 0},
1029#ifndef MNG_SKIPCHUNK_sPLT
1030 {"mng_putchunk_splt", 1, 0, 0},
1031#endif
1032#ifndef MNG_SKIPCHUNK_sRGB
1033 {"mng_putchunk_srgb", 1, 0, 0},
1034#endif
1035 {"mng_putchunk_term", 1, 0, 0},
1036#ifndef MNG_SKIPCHUNK_tEXt
1037 {"mng_putchunk_text", 1, 0, 0},
1038#endif
1039#ifndef MNG_SKIPCHUNK_tIME
1040 {"mng_putchunk_time", 1, 0, 0},
1041#endif
1042 {"mng_putchunk_trns", 1, 0, 0},
1043 {"mng_putchunk_unkown", 1, 0, 0},
1044#ifndef MNG_SKIPCHUNK_zTXt
1045 {"mng_putchunk_ztxt", 1, 0, 0},
1046#endif
1047 {"mng_putimgdata_ihdr", 0, 0, 0},
1048 {"mng_putimgdata_jhdr", 0, 0, 0},
1049 {"mng_reset", 1, 0, 0},
1050 {"mng_read", 1, 0, 0},
1051 {"mng_read_pushchunk", 1, 0, 8},
1052 {"mng_read_pushdata", 1, 0, 8},
1053 {"mng_read_pushsig", 1, 0, 8},
1054 {"mng_read_resume", 1, 0, 0},
1055 {"mng_readdisplay", 1, 0, 0},
1056 {"mng_set_bgcolor", 1, 0, 0},
1057 {"mng_set_bkgdstyle", 1, 0, 0},
1058 {"mng_set_cacheplayback", 1, 0, 2},
1059 {"mng_set_canvasstyle", 1, 0, 0},
1060 {"mng_set_dfltimggamma", 1, 0, 0},
1061#ifndef MNG_NO_DFLT_INFO
1062 {"mng_set_dfltimggammaint", 1, 0, 0},
1063#endif
1064 {"mng_set_displaygamma", 1, 0, 0},
1065 {"mng_set_displaygammaint", 1, 0, 0},
1066 {"mng_set_doprogressive", 1, 0, 2},
1067#ifdef MNG_ACCESS_JPEG
1068 {"mng_set_jpeg_dctmethod", 1, 0, 0},
1069 {"mng_set_jpeg_maxjdat", 1, 0, 0},
1070 {"mng_set_jpeg_optimized", 1, 0, 0},
1071 {"mng_set_jpeg_progressive", 1, 0, 0},
1072 {"mng_set_jpeg_quality", 1, 0, 0},
1073 {"mng_set_jpeg_smoothing", 1, 0, 0},
1074#endif
1075#ifndef MNG_SKIP_MAXCANVAS
1076 {"mng_set_maxcanvasheight", 1, 0, 0},
1077 {"mng_set_maxcanvassize", 1, 0, 0},
1078 {"mng_set_maxcanvaswidth", 1, 0, 0},
1079#endif
1080 {"mng_set_outputprofile", 1, 0, 0},
1081 {"mng_set_outputprofile2", 1, 0, 0},
1082 {"mng_set_outputsrgb", 1, 0, 1},
1083 {"mng_set_sectionbreaks", 1, 0, 0},
1084 {"mng_set_speed", 1, 0, 0},
1085 {"mng_set_srgb", 1, 0, 0},
1086 {"mng_set_srgbimplicit", 1, 0, 1},
1087 {"mng_set_srgbprofile", 1, 0, 0},
1088 {"mng_set_srgbprofile2", 1, 0, 0},
1089 {"mng_set_storechunks", 1, 0, 0},
1090 {"mng_set_suspensionmode", 1, 0, 0},
1091 {"mng_set_usebkgd", 1, 0, 0},
1092 {"mng_set_userdata", 1, 0, 0},
1093#if defined(MNG_FULL_CMS) || defined(MNG_GAMMA_ONLY) || defined(MNG_APP_CMS)
1094 {"mng_set_viewgamma", 1, 0, 0},
1095 {"mng_set_viewgammaint", 1, 0, 0},
1096#endif
1097#ifdef MNG_ACCESS_ZLIB
1098 {"mng_set_zlib_level", 1, 0, 0},
1099 {"mng_set_zlib_maxidat", 1, 0, 0},
1100 {"mng_set_zlib_memlevel", 1, 0, 0},
1101 {"mng_set_zlib_method", 1, 0, 0},
1102 {"mng_set_zlib_strategy", 1, 0, 0},
1103 {"mng_set_zlib_windowbits", 1, 0, 0},
1104#endif
1105#ifndef MNG_NO_OPEN_CLOSE_STREAM
1106 {"mng_setcb_closestream", 1, 0, 0},
1107#endif
1108 {"mng_setcb_errorproc", 1, 0, 0},
1109 {"mng_setcb_getalphaline", 1, 0, 0},
1110 {"mng_setcb_getbkgdline", 1, 0, 0},
1111 {"mng_setcb_getcanvasline", 1, 0, 0},
1112 {"mng_setcb_gettickcount", 1, 0, 0},
1113 {"mng_setcb_memalloc", 1, 0, 0},
1114 {"mng_setcb_memfree", 1, 0, 0},
1115#ifndef MNG_NO_OPEN_CLOSE_STREAM
1116 {"mng_setcb_openstream", 1, 0, 0},
1117#endif
1118 {"mng_setcb_processarow", 1, 0, 0},
1119 {"mng_setcb_processchroma", 1, 0, 0},
1120 {"mng_setcb_processgamma", 1, 0, 0},
1121 {"mng_setcb_processheader", 1, 0, 0},
1122 {"mng_setcb_processiccp", 1, 0, 0},
1123 {"mng_setcb_processmend", 1, 0, 1},
1124 {"mng_setcb_processneed", 1, 0, 0},
1125 {"mng_setcb_processsave", 1, 0, 0},
1126 {"mng_setcb_processseek", 1, 0, 0},
1127 {"mng_setcb_processsrgb", 1, 0, 0},
1128 {"mng_setcb_processterm", 1, 0, 2},
1129 {"mng_setcb_processtext", 1, 0, 0},
1130 {"mng_setcb_processunknown", 1, 0, 0},
1131 {"mng_setcb_readdata", 1, 0, 0},
1132 {"mng_setcb_refresh", 1, 0, 0},
1133 {"mng_setcb_releasedata", 1, 0, 8},
1134 {"mng_setcb_settimer", 1, 0, 0},
1135 {"mng_setcb_traceproc", 1, 0, 0},
1136 {"mng_setcb_writedata", 1, 0, 0},
1137 {"mng_status_creating", 1, 0, 0},
1138 {"mng_status_displaying", 1, 0, 0},
1139 {"mng_status_dynamic", 1, 0, 5},
1140 {"mng_status_error", 1, 0, 0},
1141 {"mng_status_reading", 1, 0, 0},
1142 {"mng_status_running", 1, 0, 0},
1143 {"mng_status_runningevent", 1, 0, 5},
1144 {"mng_status_suspendbreak", 1, 0, 0},
1145 {"mng_status_timerbreak", 1, 0, 0},
1146 {"mng_status_writing", 1, 0, 0},
1147 {"mng_supports_func", 1, 0, 5},
1148 {"mng_trapevent", 1, 0, 5},
1149 {"mng_updatemngheader", 1, 0, 0},
1150 {"mng_updatemngsimplicity", 1, 0, 0},
1151 {"mng_version_beta", 1, 0, 5},
1152 {"mng_version_dll", 1, 0, 0},
1153 {"mng_version_major", 1, 0, 0},
1154 {"mng_version_minor", 1, 0, 0},
1155 {"mng_version_release", 1, 0, 0},
1156 {"mng_version_so", 1, 0, 0},
1157 {"mng_version_text", 1, 0, 0},
1158 {"mng_write", 1, 0, 0},
1159 };
1160
1161mng_bool MNG_DECL mng_supports_func (mng_pchar zFunction,
1162 mng_uint8* iMajor,
1163 mng_uint8* iMinor,
1164 mng_uint8* iRelease)
1165{
1166 mng_int32 iTop, iLower, iUpper, iMiddle;
1167 mng_func_entryp pEntry; /* pointer to found entry */
1168 /* determine max index of table */
1169 iTop = (sizeof (func_table) / sizeof (func_table [0])) - 1;
1170
1171 iLower = 0; /* initialize binary search */
1172 iMiddle = iTop >> 1; /* start in the middle */
1173 iUpper = iTop;
1174 pEntry = 0; /* no goods yet! */
1175
1176 do /* the binary search itself */
1177 {
1178 mng_int32 iRslt = strcmp(func_table [iMiddle].zFunction, zFunction);
1179 if (iRslt < 0)
1180 iLower = iMiddle + 1;
1181 else if (iRslt > 0)
1182 iUpper = iMiddle - 1;
1183 else
1184 {
1185 pEntry = &func_table [iMiddle];
1186 break;
1187 };
1188
1189 iMiddle = (iLower + iUpper) >> 1;
1190 }
1191 while (iLower <= iUpper);
1192
1193 if (pEntry) /* found it ? */
1194 {
1195 *iMajor = pEntry->iMajor;
1196 *iMinor = pEntry->iMinor;
1197 *iRelease = pEntry->iRelease;
1198 return MNG_TRUE;
1199 }
1200 else
1201 {
1202 *iMajor = 0;
1203 *iMinor = 0;
1204 *iRelease = 0;
1205 return MNG_FALSE;
1206 }
1207}
1208#endif
1209
1210/* ************************************************************************** */
1211/* * * */
1212/* * HLAPI routines * */
1213/* * * */
1214/* ************************************************************************** */
1215
1216mng_handle MNG_DECL mng_initialize (mng_ptr pUserdata,
1217 mng_memalloc fMemalloc,
1218 mng_memfree fMemfree,
1219 mng_traceproc fTraceproc)
1220{
1221 mng_datap pData;
1222#ifdef MNG_SUPPORT_DISPLAY
1223 mng_retcode iRetcode;
1224 mng_imagep pImage;
1225#endif
1226
1227#ifdef MNG_INTERNAL_MEMMNGMT /* allocate the main datastruc */
1228 pData = (mng_datap)calloc (1, sizeof (mng_data));
1229#else
1230 pData = (mng_datap)fMemalloc (sizeof (mng_data));
1231#endif
1232
1233 if (!pData)
1234 return MNG_NULL; /* error: out of memory?? */
1235 /* validate the structure */
1236 pData->iMagic = MNG_MAGIC;
1237 /* save userdata field */
1238 pData->pUserdata = pUserdata;
1239 /* remember trace callback */
1240 pData->fTraceproc = fTraceproc;
1241
1242#ifdef MNG_SUPPORT_TRACE
1243 if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_INITIALIZE))
1244 {
1245 MNG_FREEX (pData, pData, sizeof (mng_data));
1246 return MNG_NULL;
1247 }
1248#endif
1249 /* default canvas styles are 8-bit RGB */
1250 pData->iCanvasstyle = MNG_CANVAS_RGB8;
1251 pData->iBkgdstyle = MNG_CANVAS_RGB8;
1252
1253 pData->iBGred = 0; /* black */
1254 pData->iBGgreen = 0;
1255 pData->iBGblue = 0;
1256
1257 pData->bUseBKGD = MNG_TRUE;
1258
1259#ifdef MNG_FULL_CMS
1260 pData->bIssRGB = MNG_TRUE;
1261 pData->hProf1 = 0; /* no profiles yet */
1262 pData->hProf2 = 0;
1263 pData->hProf3 = 0;
1264 pData->hTrans = 0;
1265#endif
1266
1267 pData->dViewgamma = 1.0;
1268 pData->dDisplaygamma = 2.2;
1269 pData->dDfltimggamma = 0.45455;
1270 /* initially remember chunks */
1271 pData->bStorechunks = MNG_TRUE;
1272 /* no breaks at section-borders */
1273 pData->bSectionbreaks = MNG_FALSE;
1274 /* initially cache playback info */
1275 pData->bCacheplayback = MNG_TRUE;
1276 /* progressive refresh for large images */
1277 pData->bDoProgressive = MNG_TRUE;
1278 /* crc exists; should check; error for
1279 critical chunks; warning for ancillery;
1280 generate crc for output */
1281 pData->iCrcmode = MNG_CRC_DEFAULT;
1282 /* normal animation-speed ! */
1283 pData->iSpeed = mng_st_normal;
1284 /* initial image limits */
1285 pData->iMaxwidth = 10000;
1286 pData->iMaxheight = 10000;
1287
1288#ifdef MNG_INTERNAL_MEMMNGMT /* internal management */
1289 pData->fMemalloc = MNG_NULL;
1290 pData->fMemfree = MNG_NULL;
1291#else /* keep callbacks */
1292 pData->fMemalloc = fMemalloc;
1293 pData->fMemfree = fMemfree;
1294#endif
1295 /* no value (yet) */
1296 pData->fReleasedata = MNG_NULL;
1297#ifndef MNG_NO_OPEN_CLOSE_STREAM
1298 pData->fOpenstream = MNG_NULL;
1299 pData->fClosestream = MNG_NULL;
1300#endif
1301 pData->fReaddata = MNG_NULL;
1302 pData->fWritedata = MNG_NULL;
1303 pData->fErrorproc = MNG_NULL;
1304 pData->fProcessheader = MNG_NULL;
1305 pData->fProcesstext = MNG_NULL;
1306 pData->fProcesssave = MNG_NULL;
1307 pData->fProcessseek = MNG_NULL;
1308 pData->fProcessneed = MNG_NULL;
1309 pData->fProcessmend = MNG_NULL;
1310 pData->fProcessunknown = MNG_NULL;
1311 pData->fProcessterm = MNG_NULL;
1312 pData->fGetcanvasline = MNG_NULL;
1313 pData->fGetbkgdline = MNG_NULL;
1314 pData->fGetalphaline = MNG_NULL;
1315 pData->fRefresh = MNG_NULL;
1316 pData->fGettickcount = MNG_NULL;
1317 pData->fSettimer = MNG_NULL;
1318 pData->fProcessgamma = MNG_NULL;
1319 pData->fProcesschroma = MNG_NULL;
1320 pData->fProcesssrgb = MNG_NULL;
1321 pData->fProcessiccp = MNG_NULL;
1322 pData->fProcessarow = MNG_NULL;
1323
1324#if defined(MNG_SUPPORT_DISPLAY) && (defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS))
1325 pData->dLastgamma = 0; /* lookup table needs first-time calc */
1326#endif
1327
1328#ifdef MNG_SUPPORT_DISPLAY /* create object 0 */
1329 iRetcode = mng_create_imageobject (pData, 0, MNG_TRUE, MNG_TRUE, MNG_TRUE,
1330 0, 0, 0, 0, 0, 0, 0, 0, 0, MNG_FALSE,
1331 0, 0, 0, 0, &pImage);
1332
1333 if (iRetcode) /* on error drop out */
1334 {
1335 MNG_FREEX (pData, pData, sizeof (mng_data));
1336 return MNG_NULL;
1337 }
1338
1339 pData->pObjzero = pImage;
1340#endif
1341
1342#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_LCMS)
1343 mnglcms_initlibrary (); /* init lcms particulars */
1344#endif
1345
1346#ifdef MNG_SUPPORT_READ
1347 pData->bSuspensionmode = MNG_FALSE;
1348 pData->iSuspendbufsize = 0;
1349 pData->pSuspendbuf = MNG_NULL;
1350 pData->pSuspendbufnext = MNG_NULL;
1351 pData->iSuspendbufleft = 0;
1352 pData->iChunklen = 0;
1353 pData->pReadbufnext = MNG_NULL;
1354 pData->pLargebufnext = MNG_NULL;
1355
1356 pData->pFirstpushchunk = MNG_NULL;
1357 pData->pLastpushchunk = MNG_NULL;
1358 pData->pFirstpushdata = MNG_NULL;
1359 pData->pLastpushdata = MNG_NULL;
1360#endif
1361
1362#ifdef MNG_INCLUDE_ZLIB
1363 mngzlib_initialize (pData); /* initialize zlib structures and such */
1364 /* default zlib compression parameters */
1365 pData->iZlevel = MNG_ZLIB_LEVEL;
1366 pData->iZmethod = MNG_ZLIB_METHOD;
1367 pData->iZwindowbits = MNG_ZLIB_WINDOWBITS;
1368 pData->iZmemlevel = MNG_ZLIB_MEMLEVEL;
1369 pData->iZstrategy = MNG_ZLIB_STRATEGY;
1370 /* default maximum IDAT data size */
1371 pData->iMaxIDAT = MNG_MAX_IDAT_SIZE;
1372#endif
1373
1374#ifdef MNG_INCLUDE_JNG /* default IJG compression parameters */
1375 pData->eJPEGdctmethod = MNG_JPEG_DCT;
1376 pData->iJPEGquality = MNG_JPEG_QUALITY;
1377 pData->iJPEGsmoothing = MNG_JPEG_SMOOTHING;
1378 pData->bJPEGcompressprogr = MNG_JPEG_PROGRESSIVE;
1379 pData->bJPEGcompressopt = MNG_JPEG_OPTIMIZED;
1380 /* default maximum JDAT data size */
1381 pData->iMaxJDAT = MNG_MAX_JDAT_SIZE;
1382#endif
1383
1384 mng_reset ((mng_handle)pData);
1385
1386#ifdef MNG_SUPPORT_TRACE
1387 if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_END))
1388 {
1389 MNG_FREEX (pData, pData, sizeof (mng_data));
1390 return MNG_NULL;
1391 }
1392#endif
1393
1394 return (mng_handle)pData; /* if we get here, we're in business */
1395}
1396
1397/* ************************************************************************** */
1398
1399mng_retcode MNG_DECL mng_reset (mng_handle hHandle)
1400{
1401 mng_datap pData;
1402
1403#ifdef MNG_SUPPORT_TRACE
1404 MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_START);
1405#endif
1406
1407 MNG_VALIDHANDLE (hHandle) /* check validity handle */
1408 pData = ((mng_datap)(hHandle)); /* address main structure */
1409
1410#ifdef MNG_SUPPORT_DISPLAY
1411#ifndef MNG_SKIPCHUNK_SAVE
1412 mng_drop_savedata (pData); /* cleanup saved-data from SAVE/SEEK */
1413#endif
1414#endif
1415
1416#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_FULL_CMS)
1417 mng_clear_cms (pData); /* cleanup left-over cms stuff if any */
1418#endif
1419
1420#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_JNG)
1421 mngjpeg_cleanup (pData); /* cleanup jpeg stuff */
1422#endif
1423
1424#ifdef MNG_INCLUDE_ZLIB
1425 if (pData->bInflating) /* if we've been inflating */
1426 {
1427#ifdef MNG_INCLUDE_DISPLAY_PROCS
1428 mng_cleanup_rowproc (pData); /* cleanup row-processing, */
1429#endif
1430 mngzlib_inflatefree (pData); /* cleanup inflate! */
1431 }
1432#endif /* MNG_INCLUDE_ZLIB */
1433
1434#ifdef MNG_SUPPORT_READ
1435 if ((pData->bReading) && (!pData->bEOF))
1436 mng_process_eof (pData); /* cleanup app streaming */
1437 /* cleanup default read buffers */
1438 MNG_FREE (pData, pData->pReadbuf, pData->iReadbufsize);
1439 MNG_FREE (pData, pData->pLargebuf, pData->iLargebufsize);
1440 MNG_FREE (pData, pData->pSuspendbuf, pData->iSuspendbufsize);
1441
1442 while (pData->pFirstpushdata) /* release any pushed data & chunks */
1443 mng_release_pushdata (pData);
1444 while (pData->pFirstpushchunk)
1445 mng_release_pushchunk (pData);
1446#endif
1447
1448#ifdef MNG_SUPPORT_WRITE /* cleanup default write buffer */
1449 MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize);
1450#endif
1451
1452#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
1453 mng_drop_chunks (pData); /* drop stored chunks (if any) */
1454#endif
1455
1456#ifdef MNG_SUPPORT_DISPLAY
1457 mng_drop_objects (pData, MNG_TRUE); /* drop stored objects (if any) */
1458
1459#ifndef MNG_SKIPCHUNK_iCCP
1460 if (pData->iGlobalProfilesize) /* drop global profile (if any) */
1461 MNG_FREEX (pData, pData->pGlobalProfile, pData->iGlobalProfilesize);
1462#endif
1463#endif
1464
1465 pData->eSigtype = mng_it_unknown;
1466 pData->eImagetype = mng_it_unknown;
1467 pData->iWidth = 0; /* these are unknown yet */
1468 pData->iHeight = 0;
1469 pData->iTicks = 0;
1470 pData->iLayercount = 0;
1471 pData->iFramecount = 0;
1472 pData->iPlaytime = 0;
1473 pData->iSimplicity = 0;
1474 pData->iAlphadepth = 16; /* assume the worst! */
1475
1476 pData->iImagelevel = 0; /* no image encountered */
1477
1478 pData->iMagnify = 0; /* 1-to-1 display */
1479 pData->iOffsetx = 0; /* no offsets */
1480 pData->iOffsety = 0;
1481 pData->iCanvaswidth = 0; /* let the app decide during processheader */
1482 pData->iCanvasheight = 0;
1483 /* so far, so good */
1484 pData->iErrorcode = MNG_NOERROR;
1485 pData->iSeverity = 0;
1486 pData->iErrorx1 = 0;
1487 pData->iErrorx2 = 0;
1488 pData->zErrortext = MNG_NULL;
1489
1490#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
1491 /* let's assume the best scenario */
1492#ifndef MNG_NO_OLD_VERSIONS
1493 pData->bPreDraft48 = MNG_FALSE;
1494#endif
1495 /* the unknown chunk */
1496 pData->iChunkname = MNG_UINT_HUH;
1497 pData->iChunkseq = 0;
1498 pData->pFirstchunk = MNG_NULL;
1499 pData->pLastchunk = MNG_NULL;
1500 /* nothing processed yet */
1501 pData->bHasheader = MNG_FALSE;
1502 pData->bHasMHDR = MNG_FALSE;
1503 pData->bHasIHDR = MNG_FALSE;
1504 pData->bHasBASI = MNG_FALSE;
1505 pData->bHasDHDR = MNG_FALSE;
1506#ifdef MNG_INCLUDE_JNG
1507 pData->bHasJHDR = MNG_FALSE;
1508 pData->bHasJSEP = MNG_FALSE;
1509 pData->bHasJDAA = MNG_FALSE;
1510 pData->bHasJDAT = MNG_FALSE;
1511#endif
1512 pData->bHasPLTE = MNG_FALSE;
1513 pData->bHasTRNS = MNG_FALSE;
1514 pData->bHasGAMA = MNG_FALSE;
1515 pData->bHasCHRM = MNG_FALSE;
1516 pData->bHasSRGB = MNG_FALSE;
1517 pData->bHasICCP = MNG_FALSE;
1518 pData->bHasBKGD = MNG_FALSE;
1519 pData->bHasIDAT = MNG_FALSE;
1520
1521 pData->bHasSAVE = MNG_FALSE;
1522 pData->bHasBACK = MNG_FALSE;
1523 pData->bHasFRAM = MNG_FALSE;
1524 pData->bHasTERM = MNG_FALSE;
1525 pData->bHasLOOP = MNG_FALSE;
1526 /* there's no global stuff yet either */
1527 pData->bHasglobalPLTE = MNG_FALSE;
1528 pData->bHasglobalTRNS = MNG_FALSE;
1529 pData->bHasglobalGAMA = MNG_FALSE;
1530 pData->bHasglobalCHRM = MNG_FALSE;
1531 pData->bHasglobalSRGB = MNG_FALSE;
1532 pData->bHasglobalICCP = MNG_FALSE;
1533
1534 pData->iDatawidth = 0; /* no IHDR/BASI/DHDR done yet */
1535 pData->iDataheight = 0;
1536 pData->iBitdepth = 0;
1537 pData->iColortype = 0;
1538 pData->iCompression = 0;
1539 pData->iFilter = 0;
1540 pData->iInterlace = 0;
1541
1542#ifdef MNG_INCLUDE_JNG
1543 pData->iJHDRcolortype = 0; /* no JHDR data */
1544 pData->iJHDRimgbitdepth = 0;
1545 pData->iJHDRimgcompression = 0;
1546 pData->iJHDRimginterlace = 0;
1547 pData->iJHDRalphabitdepth = 0;
1548 pData->iJHDRalphacompression = 0;
1549 pData->iJHDRalphafilter = 0;
1550 pData->iJHDRalphainterlace = 0;
1551#endif
1552
1553#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
1554
1555#ifdef MNG_SUPPORT_READ /* no reading done */
1556 pData->bReading = MNG_FALSE;
1557 pData->bHavesig = MNG_FALSE;
1558 pData->bEOF = MNG_FALSE;
1559 pData->iReadbufsize = 0;
1560 pData->pReadbuf = MNG_NULL;
1561
1562 pData->iLargebufsize = 0;
1563 pData->pLargebuf = MNG_NULL;
1564
1565 pData->iSuspendtime = 0;
1566 pData->bSuspended = MNG_FALSE;
1567 pData->iSuspendpoint = 0;
1568
1569 pData->pSuspendbufnext = pData->pSuspendbuf;
1570 pData->iSuspendbufleft = 0;
1571#endif /* MNG_SUPPORT_READ */
1572
1573#ifdef MNG_SUPPORT_WRITE /* no creating/writing done */
1574 pData->bCreating = MNG_FALSE;
1575 pData->bWriting = MNG_FALSE;
1576 pData->iFirstchunkadded = 0;
1577 pData->iWritebufsize = 0;
1578 pData->pWritebuf = MNG_NULL;
1579#endif /* MNG_SUPPORT_WRITE */
1580
1581#ifdef MNG_SUPPORT_DISPLAY /* done nuttin' yet */
1582 pData->bDisplaying = MNG_FALSE;
1583 pData->iFrameseq = 0;
1584 pData->iLayerseq = 0;
1585 pData->iFrametime = 0;
1586
1587 pData->iTotallayers = 0;
1588 pData->iTotalframes = 0;
1589 pData->iTotalplaytime = 0;
1590
1591 pData->bSkipping = MNG_FALSE;
1592
1593#ifdef MNG_SUPPORT_DYNAMICMNG
1594 pData->bDynamic = MNG_FALSE;
1595 pData->bRunningevent = MNG_FALSE;
1596 pData->bStopafterseek = MNG_FALSE;
1597 pData->iEventx = 0;
1598 pData->iEventy = 0;
1599 pData->pLastmousemove = MNG_NULL;
1600#endif
1601
1602 pData->iRequestframe = 0;
1603 pData->iRequestlayer = 0;
1604 pData->iRequesttime = 0;
1605 pData->bSearching = MNG_FALSE;
1606
1607 pData->bRestorebkgd = MNG_FALSE;
1608
1609 pData->iRuntime = 0;
1610 pData->iSynctime = 0;
1611 pData->iStarttime = 0;
1612 pData->iEndtime = 0;
1613 pData->bRunning = MNG_FALSE;
1614 pData->bTimerset = MNG_FALSE;
1615 pData->iBreakpoint = 0;
1616 pData->bSectionwait = MNG_FALSE;
1617 pData->bFreezing = MNG_FALSE;
1618 pData->bResetting = MNG_FALSE;
1619 pData->bNeedrefresh = MNG_FALSE;
1620 pData->bMisplacedTERM = MNG_FALSE;
1621 pData->bOnlyfirstframe = MNG_FALSE;
1622 pData->iFramesafterTERM = 0;
1623 /* these don't exist yet */
1624 pData->pCurrentobj = MNG_NULL;
1625 pData->pCurraniobj = MNG_NULL;
1626 pData->pTermaniobj = MNG_NULL;
1627 pData->pLastclone = MNG_NULL;
1628 pData->pStoreobj = MNG_NULL;
1629 pData->pStorebuf = MNG_NULL;
1630 pData->pRetrieveobj = MNG_NULL;
1631 /* no saved data ! */
1632 pData->pSavedata = MNG_NULL;
1633
1634 pData->iUpdateleft = 0; /* no region updated yet */
1635 pData->iUpdateright = 0;
1636 pData->iUpdatetop = 0;
1637 pData->iUpdatebottom = 0;
1638
1639 pData->iPass = -1; /* interlacing stuff and temp buffers */
1640 pData->iRow = 0;
1641 pData->iRowinc = 1;
1642 pData->iCol = 0;
1643 pData->iColinc = 1;
1644 pData->iRowsamples = 0;
1645 pData->iSamplemul = 0;
1646 pData->iSampleofs = 0;
1647 pData->iSamplediv = 0;
1648 pData->iRowsize = 0;
1649 pData->iRowmax = 0;
1650 pData->iFilterofs = 0;
1651 pData->iPixelofs = 1;
1652 pData->iLevel0 = 0;
1653 pData->iLevel1 = 0;
1654 pData->iLevel2 = 0;
1655 pData->iLevel3 = 0;
1656 pData->pWorkrow = MNG_NULL;
1657 pData->pPrevrow = MNG_NULL;
1658 pData->pRGBArow = MNG_NULL;
1659 pData->bIsRGBA16 = MNG_TRUE;
1660 pData->bIsOpaque = MNG_TRUE;
1661 pData->iFilterbpp = 1;
1662
1663 pData->iSourcel = 0; /* always initialized just before */
1664 pData->iSourcer = 0; /* compositing the next layer */
1665 pData->iSourcet = 0;
1666 pData->iSourceb = 0;
1667 pData->iDestl = 0;
1668 pData->iDestr = 0;
1669 pData->iDestt = 0;
1670 pData->iDestb = 0;
1671 /* lists are empty */
1672 pData->pFirstimgobj = MNG_NULL;
1673 pData->pLastimgobj = MNG_NULL;
1674 pData->pFirstaniobj = MNG_NULL;
1675 pData->pLastaniobj = MNG_NULL;
1676#ifdef MNG_SUPPORT_DYNAMICMNG
1677 pData->pFirstevent = MNG_NULL;
1678 pData->pLastevent = MNG_NULL;
1679#endif
1680 /* no processing callbacks */
1681 pData->fDisplayrow = MNG_NULL;
1682 pData->fRestbkgdrow = MNG_NULL;
1683 pData->fCorrectrow = MNG_NULL;
1684 pData->fRetrieverow = MNG_NULL;
1685 pData->fStorerow = MNG_NULL;
1686 pData->fProcessrow = MNG_NULL;
1687 pData->fDifferrow = MNG_NULL;
1688 pData->fScalerow = MNG_NULL;
1689 pData->fDeltarow = MNG_NULL;
1690#ifndef MNG_SKIPCHUNK_PAST
1691 pData->fFliprow = MNG_NULL;
1692 pData->fTilerow = MNG_NULL;
1693#endif
1694 pData->fInitrowproc = MNG_NULL;
1695
1696 pData->iPLTEcount = 0; /* no PLTE data */
1697
1698#ifndef MNG_SKIPCHUNK_DEFI
1699 pData->iDEFIobjectid = 0; /* no DEFI data */
1700 pData->bDEFIhasdonotshow = MNG_FALSE;
1701 pData->iDEFIdonotshow = 0;
1702 pData->bDEFIhasconcrete = MNG_FALSE;
1703 pData->iDEFIconcrete = 0;
1704 pData->bDEFIhasloca = MNG_FALSE;
1705 pData->iDEFIlocax = 0;
1706 pData->iDEFIlocay = 0;
1707 pData->bDEFIhasclip = MNG_FALSE;
1708 pData->iDEFIclipl = 0;
1709 pData->iDEFIclipr = 0;
1710 pData->iDEFIclipt = 0;
1711 pData->iDEFIclipb = 0;
1712#endif
1713
1714#ifndef MNG_SKIPCHUNK_BACK
1715 pData->iBACKred = 0; /* no BACK data */
1716 pData->iBACKgreen = 0;
1717 pData->iBACKblue = 0;
1718 pData->iBACKmandatory = 0;
1719 pData->iBACKimageid = 0;
1720 pData->iBACKtile = 0;
1721#endif
1722
1723#ifndef MNG_SKIPCHUNK_FRAM
1724 pData->iFRAMmode = 1; /* default global FRAM variables */
1725 pData->iFRAMdelay = 1;
1726 pData->iFRAMtimeout = 0x7fffffffl;
1727 pData->bFRAMclipping = MNG_FALSE;
1728 pData->iFRAMclipl = 0;
1729 pData->iFRAMclipr = 0;
1730 pData->iFRAMclipt = 0;
1731 pData->iFRAMclipb = 0;
1732
1733 pData->iFramemode = 1; /* again for the current frame */
1734 pData->iFramedelay = 1;
1735 pData->iFrametimeout = 0x7fffffffl;
1736 pData->bFrameclipping = MNG_FALSE;
1737 pData->iFrameclipl = 0;
1738 pData->iFrameclipr = 0;
1739 pData->iFrameclipt = 0;
1740 pData->iFrameclipb = 0;
1741
1742 pData->iNextdelay = 1;
1743
1744 pData->bForcedelay = MNG_FALSE;
1745 pData->iAccumdelay = 0;
1746#endif
1747
1748#ifndef MNG_SKIPCHUNK_SHOW
1749 pData->iSHOWmode = 0; /* no SHOW data */
1750 pData->iSHOWfromid = 0;
1751 pData->iSHOWtoid = 0;
1752 pData->iSHOWnextid = 0;
1753 pData->iSHOWskip = 0;
1754#endif
1755
1756 pData->iGlobalPLTEcount = 0; /* no global PLTE data */
1757
1758 pData->iGlobalTRNSrawlen = 0; /* no global tRNS data */
1759
1760 pData->iGlobalGamma = 0; /* no global gAMA data */
1761
1762#ifndef MNG_SKIPCHUNK_cHRM
1763 pData->iGlobalWhitepointx = 0; /* no global cHRM data */
1764 pData->iGlobalWhitepointy = 0;
1765 pData->iGlobalPrimaryredx = 0;
1766 pData->iGlobalPrimaryredy = 0;
1767 pData->iGlobalPrimarygreenx = 0;
1768 pData->iGlobalPrimarygreeny = 0;
1769 pData->iGlobalPrimarybluex = 0;
1770 pData->iGlobalPrimarybluey = 0;
1771#endif
1772
1773 pData->iGlobalRendintent = 0; /* no global sRGB data */
1774
1775#ifndef MNG_SKIPCHUNK_iCCP
1776 pData->iGlobalProfilesize = 0; /* no global iCCP data */
1777 pData->pGlobalProfile = MNG_NULL;
1778#endif
1779
1780#ifndef MNG_SKIPCHUNK_bKGD
1781 pData->iGlobalBKGDred = 0; /* no global bKGD data */
1782 pData->iGlobalBKGDgreen = 0;
1783 pData->iGlobalBKGDblue = 0;
1784#endif
1785 /* no delta-image */
1786#ifndef MNG_NO_DELTA_PNG
1787 pData->pDeltaImage = MNG_NULL;
1788 pData->iDeltaImagetype = 0;
1789 pData->iDeltatype = 0;
1790 pData->iDeltaBlockwidth = 0;
1791 pData->iDeltaBlockheight = 0;
1792 pData->iDeltaBlockx = 0;
1793 pData->iDeltaBlocky = 0;
1794 pData->bDeltaimmediate = MNG_FALSE;
1795
1796 pData->fDeltagetrow = MNG_NULL;
1797 pData->fDeltaaddrow = MNG_NULL;
1798 pData->fDeltareplacerow = MNG_NULL;
1799 pData->fDeltaputrow = MNG_NULL;
1800
1801 pData->fPromoterow = MNG_NULL;
1802 pData->fPromBitdepth = MNG_NULL;
1803 pData->pPromBuf = MNG_NULL;
1804 pData->iPromColortype = 0;
1805 pData->iPromBitdepth = 0;
1806 pData->iPromFilltype = 0;
1807 pData->iPromWidth = 0;
1808 pData->pPromSrc = MNG_NULL;
1809 pData->pPromDst = MNG_NULL;
1810#endif
1811
1812#ifndef MNG_SKIPCHUNK_MAGN
1813 pData->iMAGNfromid = 0;
1814 pData->iMAGNtoid = 0;
1815#endif
1816
1817#ifndef MNG_SKIPCHUNK_PAST
1818 pData->iPastx = 0;
1819 pData->iPasty = 0;
1820#endif
1821
1822 pData->pLastseek = MNG_NULL;
1823#endif
1824
1825#ifdef MNG_INCLUDE_ZLIB
1826 pData->bInflating = 0; /* no inflating or deflating */
1827 pData->bDeflating = 0; /* going on at the moment */
1828#endif
1829
1830#ifdef MNG_SUPPORT_DISPLAY /* reset object 0 */
1831 mng_reset_objzero (pData);
1832#endif
1833
1834#ifdef MNG_SUPPORT_TRACE
1835 MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_END);
1836#endif
1837
1838 return MNG_NOERROR;
1839}
1840
1841/* ************************************************************************** */
1842
1843mng_retcode MNG_DECL mng_cleanup (mng_handle* hHandle)
1844{
1845 mng_datap pData; /* local vars */
1846#ifndef MNG_INTERNAL_MEMMNGMT
1847 mng_memfree fFree;
1848#endif
1849
1850#ifdef MNG_SUPPORT_TRACE
1851 MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_START);
1852#endif
1853
1854 MNG_VALIDHANDLE (*hHandle) /* check validity handle */
1855 pData = ((mng_datap)(*hHandle)); /* and address main structure */
1856
1857 mng_reset (*hHandle); /* do an implicit reset to cleanup most stuff */
1858
1859#ifdef MNG_SUPPORT_DISPLAY /* drop object 0 */
1860 mng_free_imageobject (pData, (mng_imagep)pData->pObjzero);
1861#endif
1862
1863#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_FULL_CMS)
1864 if (pData->hProf2) /* output profile defined ? */
1865 mnglcms_freeprofile (pData->hProf2);
1866
1867 if (pData->hProf3) /* sRGB profile defined ? */
1868 mnglcms_freeprofile (pData->hProf3);
1869#endif
1870
1871#ifdef MNG_INCLUDE_ZLIB
1872 mngzlib_cleanup (pData); /* cleanup zlib stuff */
1873#endif
1874
1875#ifdef MNG_SUPPORT_TRACE
1876 MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_CLEANUP)
1877#endif
1878
1879 pData->iMagic = 0; /* invalidate the actual memory */
1880
1881#ifdef MNG_INTERNAL_MEMMNGMT
1882 free ((void *)*hHandle); /* cleanup the data-structure */
1883#else
1884 fFree = ((mng_datap)*hHandle)->fMemfree;
1885 fFree ((mng_ptr)*hHandle, sizeof (mng_data));
1886#endif
1887
1888 *hHandle = 0; /* wipe pointer to inhibit future use */
1889
1890 return MNG_NOERROR; /* and we're done */
1891}
1892
1893/* ************************************************************************** */
1894
1895#ifdef MNG_SUPPORT_READ
1896mng_retcode MNG_DECL mng_read (mng_handle hHandle)
1897{
1898 mng_datap pData; /* local vars */
1899 mng_retcode iRetcode;
1900
1901#ifdef MNG_SUPPORT_TRACE
1902 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_START);
1903#endif
1904
1905 MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
1906 pData = ((mng_datap)hHandle); /* and make it addressable */
1907
1908#ifndef MNG_INTERNAL_MEMMNGMT
1909 MNG_VALIDCB (hHandle, fMemalloc)
1910 MNG_VALIDCB (hHandle, fMemfree)
1911#endif
1912
1913#ifndef MNG_NO_OPEN_CLOSE_STREAM
1914 MNG_VALIDCB (hHandle, fOpenstream)
1915 MNG_VALIDCB (hHandle, fClosestream)
1916#endif
1917 MNG_VALIDCB (hHandle, fReaddata)
1918
1919#ifdef MNG_SUPPORT_DISPLAY /* valid at this point ? */
1920 if ((pData->bReading) || (pData->bDisplaying))
1921#else
1922 if (pData->bReading)
1923#endif
1924 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
1925
1926#ifdef MNG_SUPPORT_WRITE
1927 if ((pData->bWriting) || (pData->bCreating))
1928 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
1929#endif
1930
1931 if (!pData->bCacheplayback) /* must store playback info to work!! */
1932 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
1933
1934 cleanup_errors (pData); /* cleanup previous errors */
1935
1936 pData->bReading = MNG_TRUE; /* read only! */
1937
1938#ifndef MNG_NO_OPEN_CLOSE_STREAM
1939 if (pData->fOpenstream && !pData->fOpenstream (hHandle))
1940 /* open it and start reading */
1941 iRetcode = MNG_APPIOERROR;
1942 else
1943#endif
1944 iRetcode = mng_read_graphic (pData);
1945
1946 if (pData->bEOF) /* already at EOF ? */
1947 {
1948 pData->bReading = MNG_FALSE; /* then we're no longer reading */
1949
1950#ifdef MNG_SUPPORT_DISPLAY
1951 mng_reset_rundata (pData); /* reset rundata */
1952#endif
1953 }
1954
1955 if (iRetcode) /* on error bail out */
1956 return iRetcode;
1957
1958 if (pData->bSuspended) /* read suspension ? */
1959 {
1960 iRetcode = MNG_NEEDMOREDATA;
1961 pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
1962 }
1963
1964#ifdef MNG_SUPPORT_TRACE
1965 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_END);
1966#endif
1967
1968 return iRetcode;
1969}
1970#endif /* MNG_SUPPORT_READ */
1971
1972/* ************************************************************************** */
1973
1974#ifdef MNG_SUPPORT_READ
1975mng_retcode MNG_DECL mng_read_pushdata (mng_handle hHandle,
1976 mng_ptr pData,
1977 mng_size_t iLength,
1978 mng_bool bTakeownership)
1979{
1980 mng_datap pMyData; /* local vars */
1981 mng_pushdatap pPush;
1982 mng_retcode iRetcode;
1983
1984#ifdef MNG_SUPPORT_TRACE
1985 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHDATA, MNG_LC_START);
1986#endif
1987
1988 MNG_VALIDHANDLE (hHandle) /* check validity handle */
1989 pMyData = ((mng_datap)hHandle); /* and make it addressable */
1990 /* create a containing buffer */
1991 iRetcode = make_pushbuffer (pMyData, pData, iLength, bTakeownership, &pPush);
1992 if (iRetcode)
1993 return iRetcode;
1994
1995 if (pMyData->pLastpushdata) /* and update the buffer chain */
1996 pMyData->pLastpushdata->pNext = pPush;
1997 else
1998 pMyData->pFirstpushdata = pPush;
1999
2000 pMyData->pLastpushdata = pPush;
2001
2002#ifdef MNG_SUPPORT_TRACE
2003 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHDATA, MNG_LC_END);
2004#endif
2005
2006 return MNG_NOERROR;
2007}
2008#endif /* MNG_SUPPORT_READ */
2009
2010/* ************************************************************************** */
2011
2012#ifdef MNG_SUPPORT_READ
2013mng_retcode MNG_DECL mng_read_pushsig (mng_handle hHandle,
2014 mng_imgtype eSigtype)
2015{
2016 mng_datap pData; /* local vars */
2017
2018#ifdef MNG_SUPPORT_TRACE
2019 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHSIG, MNG_LC_START);
2020#endif
2021
2022 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2023 pData = ((mng_datap)hHandle); /* and make it addressable */
2024
2025 if (pData->bHavesig) /* can we expect this call ? */
2026 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2027
2028 pData->eSigtype = eSigtype;
2029 pData->bHavesig = MNG_TRUE;
2030
2031#ifdef MNG_SUPPORT_TRACE
2032 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHSIG, MNG_LC_END);
2033#endif
2034
2035 return MNG_NOERROR;
2036}
2037#endif /* MNG_SUPPORT_READ */
2038
2039/* ************************************************************************** */
2040
2041#ifdef MNG_SUPPORT_READ
2042mng_retcode MNG_DECL mng_read_pushchunk (mng_handle hHandle,
2043 mng_ptr pChunk,
2044 mng_size_t iLength,
2045 mng_bool bTakeownership)
2046{
2047 mng_datap pMyData; /* local vars */
2048 mng_pushdatap pPush;
2049 mng_retcode iRetcode;
2050
2051#ifdef MNG_SUPPORT_TRACE
2052 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHCHUNK, MNG_LC_START);
2053#endif
2054
2055 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2056 pMyData = ((mng_datap)hHandle); /* and make it addressable */
2057 /* create a containing buffer */
2058 iRetcode = make_pushbuffer (pMyData, pChunk, iLength, bTakeownership, &pPush);
2059 if (iRetcode)
2060 return iRetcode;
2061
2062 if (pMyData->pLastpushchunk) /* and update the buffer chain */
2063 pMyData->pLastpushchunk->pNext = pPush;
2064 else
2065 pMyData->pFirstpushchunk = pPush;
2066
2067 pMyData->pLastpushchunk = pPush;
2068
2069#ifdef MNG_SUPPORT_TRACE
2070 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHCHUNK, MNG_LC_END);
2071#endif
2072
2073 return MNG_NOERROR;
2074}
2075#endif /* MNG_SUPPORT_READ */
2076
2077/* ************************************************************************** */
2078
2079#ifdef MNG_SUPPORT_READ
2080mng_retcode MNG_DECL mng_read_resume (mng_handle hHandle)
2081{
2082 mng_datap pData; /* local vars */
2083 mng_retcode iRetcode;
2084
2085#ifdef MNG_SUPPORT_TRACE
2086 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_START);
2087#endif
2088
2089 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2090 pData = ((mng_datap)hHandle); /* and make it addressable */
2091 /* can we expect this call ? */
2092 if ((!pData->bReading) || (!pData->bSuspended))
2093 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2094
2095 cleanup_errors (pData); /* cleanup previous errors */
2096
2097 pData->bSuspended = MNG_FALSE; /* reset the flag */
2098
2099#ifdef MNG_SUPPORT_DISPLAY /* re-synchronize ? */
2100 if ((pData->bDisplaying) && (pData->bRunning))
2101 pData->iSynctime = pData->iSynctime - pData->iSuspendtime +
2102 pData->fGettickcount (hHandle);
2103#endif
2104
2105 iRetcode = mng_read_graphic (pData); /* continue reading now */
2106
2107 if (pData->bEOF) /* at EOF ? */
2108 {
2109 pData->bReading = MNG_FALSE; /* then we're no longer reading */
2110
2111#ifdef MNG_SUPPORT_DISPLAY
2112 mng_reset_rundata (pData); /* reset rundata */
2113#endif
2114 }
2115
2116 if (iRetcode) /* on error bail out */
2117 return iRetcode;
2118
2119 if (pData->bSuspended) /* read suspension ? */
2120 {
2121 iRetcode = MNG_NEEDMOREDATA;
2122 pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
2123 }
2124
2125#ifdef MNG_SUPPORT_TRACE
2126 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_END);
2127#endif
2128
2129 return iRetcode;
2130}
2131#endif /* MNG_SUPPORT_READ */
2132
2133/* ************************************************************************** */
2134
2135#ifdef MNG_SUPPORT_WRITE
2136mng_retcode MNG_DECL mng_write (mng_handle hHandle)
2137{
2138 mng_datap pData;
2139 mng_retcode iRetcode;
2140
2141#ifdef MNG_SUPPORT_TRACE
2142 MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_START);
2143#endif
2144
2145 MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
2146 pData = ((mng_datap)hHandle); /* and make it addressable */
2147
2148#ifndef MNG_INTERNAL_MEMMNGMT
2149 MNG_VALIDCB (hHandle, fMemalloc)
2150 MNG_VALIDCB (hHandle, fMemfree)
2151#endif
2152
2153#ifndef MNG_NO_OPEN_CLOSE_STREAM
2154 MNG_VALIDCB (hHandle, fOpenstream)
2155 MNG_VALIDCB (hHandle, fClosestream)
2156#endif
2157 MNG_VALIDCB (hHandle, fWritedata)
2158
2159#ifdef MNG_SUPPORT_READ
2160 if (pData->bReading) /* valid at this point ? */
2161 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2162#endif
2163
2164 cleanup_errors (pData); /* cleanup previous errors */
2165
2166 iRetcode = mng_write_graphic (pData);/* do the write */
2167
2168 if (iRetcode) /* on error bail out */
2169 return iRetcode;
2170
2171#ifdef MNG_SUPPORT_TRACE
2172 MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_END);
2173#endif
2174
2175 return MNG_NOERROR;
2176}
2177#endif /* MNG_SUPPORT_WRITE */
2178
2179/* ************************************************************************** */
2180
2181#ifdef MNG_SUPPORT_WRITE
2182mng_retcode MNG_DECL mng_create (mng_handle hHandle)
2183{
2184 mng_datap pData;
2185 mng_retcode iRetcode;
2186
2187#ifdef MNG_SUPPORT_TRACE
2188 MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_START);
2189#endif
2190
2191 MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
2192 pData = ((mng_datap)hHandle); /* and make it addressable */
2193
2194#ifndef MNG_INTERNAL_MEMMNGMT
2195 MNG_VALIDCB (hHandle, fMemalloc)
2196 MNG_VALIDCB (hHandle, fMemfree)
2197#endif
2198
2199#ifdef MNG_SUPPORT_READ
2200 if (pData->bReading) /* valid at this point ? */
2201 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2202#endif
2203
2204 if ((pData->bWriting) || (pData->bCreating))
2205 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2206
2207 cleanup_errors (pData); /* cleanup previous errors */
2208
2209 iRetcode = mng_reset (hHandle); /* clear any previous stuff */
2210
2211 if (iRetcode) /* on error bail out */
2212 return iRetcode;
2213
2214 pData->bCreating = MNG_TRUE; /* indicate we're creating a new file */
2215
2216#ifdef MNG_SUPPORT_TRACE
2217 MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_END);
2218#endif
2219
2220 return MNG_NOERROR;
2221}
2222#endif /* MNG_SUPPORT_WRITE */
2223
2224/* ************************************************************************** */
2225
2226#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_READ)
2227mng_retcode MNG_DECL mng_readdisplay (mng_handle hHandle)
2228{
2229 mng_datap pData; /* local vars */
2230 mng_retcode iRetcode;
2231
2232#ifdef MNG_SUPPORT_TRACE
2233 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_START);
2234#endif
2235
2236 MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
2237 pData = ((mng_datap)hHandle); /* and make it addressable */
2238
2239#ifndef MNG_INTERNAL_MEMMNGMT
2240 MNG_VALIDCB (hHandle, fMemalloc)
2241 MNG_VALIDCB (hHandle, fMemfree)
2242#endif
2243
2244 MNG_VALIDCB (hHandle, fReaddata)
2245 MNG_VALIDCB (hHandle, fGetcanvasline)
2246 MNG_VALIDCB (hHandle, fRefresh)
2247 MNG_VALIDCB (hHandle, fGettickcount)
2248 MNG_VALIDCB (hHandle, fSettimer)
2249 /* valid at this point ? */
2250 if ((pData->bReading) || (pData->bDisplaying))
2251 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2252
2253#ifdef MNG_SUPPORT_WRITE
2254 if ((pData->bWriting) || (pData->bCreating))
2255 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2256#endif
2257
2258 cleanup_errors (pData); /* cleanup previous errors */
2259
2260 pData->bReading = MNG_TRUE; /* read & display! */
2261 pData->bDisplaying = MNG_TRUE;
2262 pData->bRunning = MNG_TRUE;
2263 pData->iFrameseq = 0;
2264 pData->iLayerseq = 0;
2265 pData->iFrametime = 0;
2266 pData->iRequestframe = 0;
2267 pData->iRequestlayer = 0;
2268 pData->iRequesttime = 0;
2269 pData->bSearching = MNG_FALSE;
2270 pData->iRuntime = 0;
2271 pData->iSynctime = pData->fGettickcount (hHandle);
2272 pData->iSuspendtime = 0;
2273 pData->iStarttime = pData->iSynctime;
2274 pData->iEndtime = 0;
2275
2276#ifndef MNG_NO_OPEN_CLOSE_STREAM
2277 if (pData->fOpenstream && !pData->fOpenstream (hHandle))
2278 /* open it and start reading */
2279 iRetcode = MNG_APPIOERROR;
2280 else
2281#endif
2282 iRetcode = mng_read_graphic (pData);
2283
2284 if (pData->bEOF) /* already at EOF ? */
2285 {
2286 pData->bReading = MNG_FALSE; /* then we're no longer reading */
2287 mng_drop_invalid_objects (pData); /* drop invalidly stored objects */
2288 }
2289
2290 if (iRetcode) /* on error bail out */
2291 return iRetcode;
2292
2293 if (pData->bSuspended) /* read suspension ? */
2294 {
2295 iRetcode = MNG_NEEDMOREDATA;
2296 pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
2297 }
2298 else
2299 if (pData->bTimerset) /* indicate timer break ? */
2300 iRetcode = MNG_NEEDTIMERWAIT;
2301 else
2302 if (pData->bSectionwait) /* indicate section break ? */
2303 iRetcode = MNG_NEEDSECTIONWAIT;
2304 else
2305 { /* no breaks = end of run */
2306 pData->bRunning = MNG_FALSE;
2307
2308 if (pData->bFreezing) /* dynamic MNG reached SEEK ? */
2309 pData->bFreezing = MNG_FALSE; /* reset it ! */
2310 }
2311
2312#ifdef MNG_SUPPORT_TRACE
2313 MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_END);
2314#endif
2315
2316 return iRetcode;
2317}
2318#endif /* MNG_SUPPORT_DISPLAY && MNG_SUPPORT_READ */
2319
2320/* ************************************************************************** */
2321
2322#ifdef MNG_SUPPORT_DISPLAY
2323mng_retcode MNG_DECL mng_display (mng_handle hHandle)
2324{
2325 mng_datap pData; /* local vars */
2326 mng_retcode iRetcode;
2327
2328#ifdef MNG_SUPPORT_TRACE
2329 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_START);
2330#endif
2331
2332 MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
2333 pData = ((mng_datap)hHandle); /* and make it addressable */
2334
2335#ifndef MNG_INTERNAL_MEMMNGMT
2336 MNG_VALIDCB (hHandle, fMemalloc)
2337 MNG_VALIDCB (hHandle, fMemfree)
2338#endif
2339
2340 MNG_VALIDCB (hHandle, fGetcanvasline)
2341 MNG_VALIDCB (hHandle, fRefresh)
2342 MNG_VALIDCB (hHandle, fGettickcount)
2343 MNG_VALIDCB (hHandle, fSettimer)
2344
2345 if (pData->bDisplaying) /* valid at this point ? */
2346 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2347
2348#ifdef MNG_SUPPORT_READ
2349 if (pData->bReading)
2350 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2351#endif
2352
2353#ifdef MNG_SUPPORT_WRITE
2354 if ((pData->bWriting) || (pData->bCreating))
2355 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2356#endif
2357
2358 cleanup_errors (pData); /* cleanup previous errors */
2359
2360 pData->bDisplaying = MNG_TRUE; /* display! */
2361 pData->bRunning = MNG_TRUE;
2362 pData->iFrameseq = 0;
2363 pData->iLayerseq = 0;
2364 pData->iFrametime = 0;
2365 pData->iRequestframe = 0;
2366 pData->iRequestlayer = 0;
2367 pData->iRequesttime = 0;
2368 pData->bSearching = MNG_FALSE;
2369 pData->iRuntime = 0;
2370 pData->iSynctime = pData->fGettickcount (hHandle);
2371#ifdef MNG_SUPPORT_READ
2372 pData->iSuspendtime = 0;
2373#endif
2374 pData->iStarttime = pData->iSynctime;
2375 pData->iEndtime = 0;
2376 pData->pCurraniobj = pData->pFirstaniobj;
2377 /* go do it */
2378 iRetcode = mng_process_display (pData);
2379
2380 if (iRetcode) /* on error bail out */
2381 return iRetcode;
2382
2383 if (pData->bTimerset) /* indicate timer break ? */
2384 iRetcode = MNG_NEEDTIMERWAIT;
2385 else
2386 { /* no breaks = end of run */
2387 pData->bRunning = MNG_FALSE;
2388
2389 if (pData->bFreezing) /* dynamic MNG reached SEEK ? */
2390 pData->bFreezing = MNG_FALSE; /* reset it ! */
2391 }
2392
2393#ifdef MNG_SUPPORT_TRACE
2394 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_END);
2395#endif
2396
2397 return iRetcode;
2398}
2399#endif /* MNG_SUPPORT_DISPLAY */
2400
2401/* ************************************************************************** */
2402
2403#ifdef MNG_SUPPORT_DISPLAY
2404mng_retcode MNG_DECL mng_display_resume (mng_handle hHandle)
2405{
2406 mng_datap pData; /* local vars */
2407 mng_retcode iRetcode;
2408
2409#ifdef MNG_SUPPORT_TRACE
2410 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_START);
2411#endif
2412
2413 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2414 pData = ((mng_datap)hHandle); /* and make it addressable */
2415
2416 if (!pData->bDisplaying) /* can we expect this call ? */
2417 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2418
2419 cleanup_errors (pData); /* cleanup previous errors */
2420 /* was it running ? */
2421 if ((pData->bRunning) || (pData->bReading))
2422 { /* are we expecting this call ? */
2423 if ((pData->bTimerset) || (pData->bSuspended) || (pData->bSectionwait))
2424 {
2425 pData->bTimerset = MNG_FALSE; /* reset the flags */
2426 pData->bSectionwait = MNG_FALSE;
2427
2428#ifdef MNG_SUPPORT_READ
2429 if (pData->bReading) /* set during read&display ? */
2430 {
2431 if (pData->bSuspended) /* calculate proper synchronization */
2432 pData->iSynctime = pData->iSynctime - pData->iSuspendtime +
2433 pData->fGettickcount (hHandle);
2434 else
2435 pData->iSynctime = pData->fGettickcount (hHandle);
2436
2437 pData->bSuspended = MNG_FALSE; /* now reset this flag */
2438 /* and continue reading */
2439 iRetcode = mng_read_graphic (pData);
2440
2441 if (pData->bEOF) /* already at EOF ? */
2442 {
2443 pData->bReading = MNG_FALSE; /* then we're no longer reading */
2444 /* drop invalidly stored objects */
2445 mng_drop_invalid_objects (pData);
2446 }
2447 }
2448 else
2449#endif /* MNG_SUPPORT_READ */
2450 { /* synchronize timing */
2451 pData->iSynctime = pData->fGettickcount (hHandle);
2452 /* resume display processing */
2453 iRetcode = mng_process_display (pData);
2454 }
2455 }
2456 else
2457 {
2458 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2459 }
2460 }
2461 else
2462 { /* synchronize timing */
2463 pData->iSynctime = pData->fGettickcount (hHandle);
2464 pData->bRunning = MNG_TRUE; /* it's restarted again ! */
2465 /* resume display processing */
2466 iRetcode = mng_process_display (pData);
2467 }
2468
2469 if (iRetcode) /* on error bail out */
2470 return iRetcode;
2471
2472 if (pData->bSuspended) /* read suspension ? */
2473 {
2474 iRetcode = MNG_NEEDMOREDATA;
2475 pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
2476 }
2477 else
2478 if (pData->bTimerset) /* indicate timer break ? */
2479 iRetcode = MNG_NEEDTIMERWAIT;
2480 else
2481 if (pData->bSectionwait) /* indicate section break ? */
2482 iRetcode = MNG_NEEDSECTIONWAIT;
2483 else
2484 { /* no breaks = end of run */
2485 pData->bRunning = MNG_FALSE;
2486
2487 if (pData->bFreezing) /* trying to freeze ? */
2488 pData->bFreezing = MNG_FALSE; /* then we're there */
2489
2490 if (pData->bResetting) /* trying to reset as well ? */
2491 { /* full stop!!! */
2492 pData->bDisplaying = MNG_FALSE;
2493
2494 iRetcode = mng_reset_rundata (pData);
2495
2496 if (iRetcode) /* on error bail out */
2497 return iRetcode;
2498 }
2499 }
2500
2501#ifdef MNG_SUPPORT_TRACE
2502 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_END);
2503#endif
2504
2505 return iRetcode;
2506}
2507#endif /* MNG_SUPPORT_DISPLAY */
2508
2509/* ************************************************************************** */
2510
2511#ifdef MNG_SUPPORT_DISPLAY
2512mng_retcode MNG_DECL mng_display_freeze (mng_handle hHandle)
2513{
2514 mng_datap pData;
2515
2516#ifdef MNG_SUPPORT_TRACE
2517 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_START);
2518#endif
2519
2520 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2521 pData = ((mng_datap)hHandle); /* and make it addressable */
2522 /* can we expect this call ? */
2523 if ((!pData->bDisplaying) || (pData->bReading))
2524 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2525
2526 cleanup_errors (pData); /* cleanup previous errors */
2527
2528 if (pData->bRunning) /* is it running ? */
2529 {
2530 mng_retcode iRetcode;
2531
2532 pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */
2533 /* continue "normal" processing */
2534 iRetcode = mng_display_resume (hHandle);
2535
2536 if (iRetcode) /* on error bail out */
2537 return iRetcode;
2538 }
2539
2540#ifdef MNG_SUPPORT_TRACE
2541 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_END);
2542#endif
2543
2544 return MNG_NOERROR;
2545}
2546#endif /* MNG_SUPPORT_DISPLAY */
2547
2548/* ************************************************************************** */
2549
2550#ifdef MNG_SUPPORT_DISPLAY
2551mng_retcode MNG_DECL mng_display_reset (mng_handle hHandle)
2552{
2553 mng_datap pData;
2554 mng_retcode iRetcode;
2555
2556#ifdef MNG_SUPPORT_TRACE
2557 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_START);
2558#endif
2559
2560 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2561 pData = ((mng_datap)hHandle); /* and make it addressable */
2562 /* can we expect this call ? */
2563 if ((!pData->bDisplaying) || (pData->bReading))
2564 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2565
2566 if (!pData->bCacheplayback) /* must store playback info to work!! */
2567 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2568
2569 cleanup_errors (pData); /* cleanup previous errors */
2570
2571 if (pData->bRunning) /* is it running ? */
2572 {
2573 pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */
2574 pData->bResetting = MNG_TRUE; /* indicate we're about to reset too */
2575 /* continue normal processing ? */
2576 iRetcode = mng_display_resume (hHandle);
2577
2578 if (iRetcode) /* on error bail out */
2579 return iRetcode;
2580 }
2581 else
2582 { /* full stop!!! */
2583 pData->bDisplaying = MNG_FALSE;
2584
2585 iRetcode = mng_reset_rundata (pData);
2586
2587 if (iRetcode) /* on error bail out */
2588 return iRetcode;
2589 }
2590
2591#ifdef MNG_SUPPORT_TRACE
2592 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_END);
2593#endif
2594
2595 return MNG_NOERROR;
2596}
2597#endif /* MNG_SUPPORT_DISPLAY */
2598
2599/* ************************************************************************** */
2600
2601#ifdef MNG_SUPPORT_DISPLAY
2602#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
2603mng_retcode MNG_DECL mng_display_goframe (mng_handle hHandle,
2604 mng_uint32 iFramenr)
2605{
2606 mng_datap pData;
2607 mng_retcode iRetcode;
2608
2609#ifdef MNG_SUPPORT_TRACE
2610 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_START);
2611#endif
2612
2613 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2614 pData = ((mng_datap)hHandle); /* and make it addressable */
2615
2616 if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
2617 MNG_ERROR (pData, MNG_NOTANANIMATION);
2618 /* can we expect this call ? */
2619 if ((!pData->bDisplaying) || (pData->bRunning))
2620 MNG_ERROR ((mng_datap)hHandle, MNG_FUNCTIONINVALID);
2621
2622 if (!pData->bCacheplayback) /* must store playback info to work!! */
2623 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2624
2625 if (iFramenr > pData->iTotalframes) /* is the parameter within bounds ? */
2626 MNG_ERROR (pData, MNG_FRAMENRTOOHIGH);
2627 /* within MHDR bounds ? */
2628 if ((pData->iFramecount) && (iFramenr > pData->iFramecount))
2629 MNG_WARNING (pData, MNG_FRAMENRTOOHIGH);
2630
2631 cleanup_errors (pData); /* cleanup previous errors */
2632
2633 if (pData->iFrameseq > iFramenr) /* search from current or go back to start ? */
2634 {
2635 iRetcode = mng_reset_rundata (pData);
2636 if (iRetcode) /* on error bail out */
2637 return iRetcode;
2638 }
2639
2640 if (iFramenr)
2641 {
2642 pData->iRequestframe = iFramenr; /* go find the requested frame then */
2643 iRetcode = mng_process_display (pData);
2644
2645 if (iRetcode) /* on error bail out */
2646 return iRetcode;
2647
2648 pData->bTimerset = MNG_FALSE; /* reset just to be safe */
2649 }
2650
2651#ifdef MNG_SUPPORT_TRACE
2652 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_END);
2653#endif
2654
2655 return MNG_NOERROR;
2656}
2657#endif
2658#endif /* MNG_SUPPORT_DISPLAY */
2659
2660/* ************************************************************************** */
2661
2662#ifdef MNG_SUPPORT_DISPLAY
2663#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
2664mng_retcode MNG_DECL mng_display_golayer (mng_handle hHandle,
2665 mng_uint32 iLayernr)
2666{
2667 mng_datap pData;
2668 mng_retcode iRetcode;
2669
2670#ifdef MNG_SUPPORT_TRACE
2671 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_START);
2672#endif
2673
2674 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2675 pData = ((mng_datap)hHandle); /* and make it addressable */
2676
2677 if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
2678 MNG_ERROR (pData, MNG_NOTANANIMATION);
2679 /* can we expect this call ? */
2680 if ((!pData->bDisplaying) || (pData->bRunning))
2681 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2682
2683 if (!pData->bCacheplayback) /* must store playback info to work!! */
2684 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2685
2686 if (iLayernr > pData->iTotallayers) /* is the parameter within bounds ? */
2687 MNG_ERROR (pData, MNG_LAYERNRTOOHIGH);
2688 /* within MHDR bounds ? */
2689 if ((pData->iLayercount) && (iLayernr > pData->iLayercount))
2690 MNG_WARNING (pData, MNG_LAYERNRTOOHIGH);
2691
2692 cleanup_errors (pData); /* cleanup previous errors */
2693
2694 if (pData->iLayerseq > iLayernr) /* search from current or go back to start ? */
2695 {
2696 iRetcode = mng_reset_rundata (pData);
2697 if (iRetcode) /* on error bail out */
2698 return iRetcode;
2699 }
2700
2701 if (iLayernr)
2702 {
2703 pData->iRequestlayer = iLayernr; /* go find the requested layer then */
2704 iRetcode = mng_process_display (pData);
2705
2706 if (iRetcode) /* on error bail out */
2707 return iRetcode;
2708
2709 pData->bTimerset = MNG_FALSE; /* reset just to be safe */
2710 }
2711
2712#ifdef MNG_SUPPORT_TRACE
2713 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_END);
2714#endif
2715
2716 return MNG_NOERROR;
2717}
2718#endif
2719#endif /* MNG_SUPPORT_DISPLAY */
2720
2721/* ************************************************************************** */
2722
2723#ifdef MNG_SUPPORT_DISPLAY
2724#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
2725mng_retcode MNG_DECL mng_display_gotime (mng_handle hHandle,
2726 mng_uint32 iPlaytime)
2727{
2728 mng_datap pData;
2729 mng_retcode iRetcode;
2730
2731#ifdef MNG_SUPPORT_TRACE
2732 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_START);
2733#endif
2734
2735 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2736 pData = ((mng_datap)hHandle); /* and make it addressable */
2737
2738 if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
2739 MNG_ERROR (pData, MNG_NOTANANIMATION);
2740 /* can we expect this call ? */
2741 if ((!pData->bDisplaying) || (pData->bRunning))
2742 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2743
2744 if (!pData->bCacheplayback) /* must store playback info to work!! */
2745 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2746 /* is the parameter within bounds ? */
2747 if (iPlaytime > pData->iTotalplaytime)
2748 MNG_ERROR (pData, MNG_PLAYTIMETOOHIGH);
2749 /* within MHDR bounds ? */
2750 if ((pData->iPlaytime) && (iPlaytime > pData->iPlaytime))
2751 MNG_WARNING (pData, MNG_PLAYTIMETOOHIGH);
2752
2753 cleanup_errors (pData); /* cleanup previous errors */
2754
2755 if (pData->iFrametime > iPlaytime) /* search from current or go back to start ? */
2756 {
2757 iRetcode = mng_reset_rundata (pData);
2758 if (iRetcode) /* on error bail out */
2759 return iRetcode;
2760 }
2761
2762 if (iPlaytime)
2763 {
2764 pData->iRequesttime = iPlaytime; /* go find the requested playtime then */
2765 iRetcode = mng_process_display (pData);
2766
2767 if (iRetcode) /* on error bail out */
2768 return iRetcode;
2769
2770 pData->bTimerset = MNG_FALSE; /* reset just to be safe */
2771 }
2772
2773#ifdef MNG_SUPPORT_TRACE
2774 MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_END);
2775#endif
2776
2777 return MNG_NOERROR;
2778}
2779#endif
2780#endif /* MNG_SUPPORT_DISPLAY */
2781
2782/* ************************************************************************** */
2783
2784#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_DYNAMICMNG)
2785mng_retcode MNG_DECL mng_trapevent (mng_handle hHandle,
2786 mng_uint8 iEventtype,
2787 mng_int32 iX,
2788 mng_int32 iY)
2789{
2790 mng_datap pData;
2791 mng_eventp pEvent;
2792 mng_bool bFound = MNG_FALSE;
2793 mng_retcode iRetcode;
2794 mng_imagep pImage;
2795 mng_uint8p pPixel;
2796
2797#ifdef MNG_SUPPORT_TRACE
2798 MNG_TRACE (((mng_datap)hHandle), MNG_FN_TRAPEVENT, MNG_LC_START);
2799#endif
2800
2801 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2802 pData = ((mng_datap)hHandle); /* and make it addressable */
2803
2804 if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
2805 MNG_ERROR (pData, MNG_NOTANANIMATION);
2806
2807 if (!pData->bDisplaying) /* can we expect this call ? */
2808 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2809
2810 if (!pData->bCacheplayback) /* must store playback info to work!! */
2811 MNG_ERROR (pData, MNG_FUNCTIONINVALID);
2812 /* let's find a matching event object */
2813 pEvent = (mng_eventp)pData->pFirstevent;
2814
2815 while ((pEvent) && (!bFound))
2816 { /* matching eventtype ? */
2817 if (pEvent->iEventtype == iEventtype)
2818 {
2819 switch (pEvent->iMasktype) /* check X/Y on basis of masktype */
2820 {
2821 case MNG_MASK_NONE : /* no mask is easy */
2822 {
2823 bFound = MNG_TRUE;
2824 break;
2825 }
2826
2827 case MNG_MASK_BOX : /* inside the given box ? */
2828 { /* right- and bottom-border don't count ! */
2829 if ((iX >= pEvent->iLeft) && (iX < pEvent->iRight) &&
2830 (iY >= pEvent->iTop) && (iY < pEvent->iBottom))
2831 bFound = MNG_TRUE;
2832 break;
2833 }
2834
2835 case MNG_MASK_OBJECT : /* non-zero pixel in the image object ? */
2836 {
2837 pImage = mng_find_imageobject (pData, pEvent->iObjectid);
2838 /* valid image ? */
2839 if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
2840 ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
2841 ((mng_int32)pImage->pImgbuf->iWidth > iX) &&
2842 ((mng_int32)pImage->pImgbuf->iHeight > iY))
2843 {
2844 pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iY) + iX);
2845
2846 if (*pPixel) /* non-zero ? */
2847 bFound = MNG_TRUE;
2848 }
2849
2850 break;
2851 }
2852
2853 case MNG_MASK_OBJECTIX : /* pixel in the image object matches index ? */
2854 {
2855 pImage = mng_find_imageobject (pData, pEvent->iObjectid);
2856 /* valid image ? */
2857 if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
2858 ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
2859 ((mng_int32)pImage->pImgbuf->iWidth > iX) && (iX >= 0) &&
2860 ((mng_int32)pImage->pImgbuf->iHeight > iY) && (iY >= 0))
2861 {
2862 pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iY) + iX);
2863 /* matching index ? */
2864 if (*pPixel == pEvent->iIndex)
2865 bFound = MNG_TRUE;
2866 }
2867
2868 break;
2869 }
2870
2871 case MNG_MASK_BOXOBJECT : /* non-zero pixel in the image object ? */
2872 {
2873 mng_int32 iTempx = iX - pEvent->iLeft;
2874 mng_int32 iTempy = iY - pEvent->iTop;
2875
2876 pImage = mng_find_imageobject (pData, pEvent->iObjectid);
2877 /* valid image ? */
2878 if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
2879 ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
2880 (iTempx < (mng_int32)pImage->pImgbuf->iWidth) &&
2881 (iTempx >= 0) && (iX < pEvent->iRight) &&
2882 (iTempy < (mng_int32)pImage->pImgbuf->iHeight) &&
2883 (iTempy >= 0) && (iY < pEvent->iBottom))
2884 {
2885 pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iTempy) + iTempx);
2886
2887 if (*pPixel) /* non-zero ? */
2888 bFound = MNG_TRUE;
2889 }
2890
2891 break;
2892 }
2893
2894 case MNG_MASK_BOXOBJECTIX : /* pixel in the image object matches index ? */
2895 {
2896 mng_int32 iTempx = iX - pEvent->iLeft;
2897 mng_int32 iTempy = iY - pEvent->iTop;
2898
2899 pImage = mng_find_imageobject (pData, pEvent->iObjectid);
2900 /* valid image ? */
2901 if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
2902 ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
2903 (iTempx < (mng_int32)pImage->pImgbuf->iWidth) &&
2904 (iTempx >= 0) && (iX < pEvent->iRight) &&
2905 (iTempy < (mng_int32)pImage->pImgbuf->iHeight) &&
2906 (iTempy >= 0) && (iY < pEvent->iBottom))
2907 {
2908 pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iTempy) + iTempx);
2909 /* matching index ? */
2910 if (*pPixel == pEvent->iIndex)
2911 bFound = MNG_TRUE;
2912 }
2913
2914 break;
2915 }
2916
2917 }
2918 }
2919
2920 if (!bFound) /* try the next one */
2921 pEvent = (mng_eventp)pEvent->sHeader.pNext;
2922 }
2923 /* found one that's not the last mousemove ? */
2924 if ((pEvent) && ((mng_objectp)pEvent != pData->pLastmousemove))
2925 { /* can we start an event process now ? */
2926 if ((!pData->bReading) && (!pData->bRunning))
2927 {
2928 pData->iEventx = iX; /* save coordinates */
2929 pData->iEventy = iY;
2930 /* do it then ! */
2931 iRetcode = pEvent->sHeader.fProcess (pData, pEvent);
2932
2933 if (iRetcode) /* on error bail out */
2934 return iRetcode;
2935 /* remember last mousemove event */
2936 if (pEvent->iEventtype == MNG_EVENT_MOUSEMOVE)
2937 pData->pLastmousemove = (mng_objectp)pEvent;
2938 else
2939 pData->pLastmousemove = MNG_NULL;
2940 }
2941 else
2942 {
2943
2944 /* TODO: store unprocessed events or not ??? */
2945
2946 }
2947 }
2948
2949#ifdef MNG_SUPPORT_TRACE
2950 MNG_TRACE (((mng_datap)hHandle), MNG_FN_TRAPEVENT, MNG_LC_END);
2951#endif
2952
2953 return MNG_NOERROR;
2954}
2955#endif
2956
2957/* ************************************************************************** */
2958
2959mng_retcode MNG_DECL mng_getlasterror (mng_handle hHandle,
2960 mng_int8* iSeverity,
2961 mng_chunkid* iChunkname,
2962 mng_uint32* iChunkseq,
2963 mng_int32* iExtra1,
2964 mng_int32* iExtra2,
2965 mng_pchar* zErrortext)
2966{
2967 mng_datap pData; /* local vars */
2968
2969#ifdef MNG_SUPPORT_TRACE
2970 MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_START);
2971#endif
2972
2973 MNG_VALIDHANDLE (hHandle) /* check validity handle */
2974 pData = ((mng_datap)hHandle); /* and make it addressable */
2975
2976 *iSeverity = pData->iSeverity; /* return the appropriate fields */
2977
2978#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
2979 *iChunkname = pData->iChunkname;
2980 *iChunkseq = pData->iChunkseq;
2981#else
2982 *iChunkname = MNG_UINT_HUH;
2983 *iChunkseq = 0;
2984#endif
2985
2986 *iExtra1 = pData->iErrorx1;
2987 *iExtra2 = pData->iErrorx2;
2988 *zErrortext = pData->zErrortext;
2989
2990#ifdef MNG_SUPPORT_TRACE
2991 MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_END);
2992#endif
2993
2994 return pData->iErrorcode; /* and the errorcode */
2995}
2996
2997/* ************************************************************************** */
2998/* * end of file * */
2999/* ************************************************************************** */
3000
3001
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