--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/libmng/libmng_hlapi.c Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,3001 @@
+/* ************************************************************************** */
+/* * For conditions of distribution and use, * */
+/* * see copyright notice in libmng.h * */
+/* ************************************************************************** */
+/* * * */
+/* * project : libmng * */
+/* * file : libmng_hlapi.c copyright (c) 2000-2007 G.Juyn * */
+/* * version : 1.0.10 * */
+/* * * */
+/* * purpose : high-level application API (implementation) * */
+/* * * */
+/* * author : G.Juyn * */
+/* * * */
+/* * comment : implementation of the high-level function interface * */
+/* * for applications. * */
+/* * * */
+/* * changes : 0.5.1 - 05/06/2000 - G.Juyn * */
+/* * - added init of iPLTEcount * */
+/* * 0.5.1 - 05/08/2000 - G.Juyn * */
+/* * - changed calling-convention definition * */
+/* * - changed status-handling of display-routines * */
+/* * - added versioning-control routines * */
+/* * - filled the write routine * */
+/* * - changed strict-ANSI stuff * */
+/* * 0.5.1 - 05/11/2000 - G.Juyn * */
+/* * - added callback error-reporting support * */
+/* * 0.5.1 - 05/12/2000 - G.Juyn * */
+/* * - changed trace to macro for callback error-reporting * */
+/* * 0.5.1 - 05/13/2000 - G.Juyn * */
+/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
+/* * - added TERM animation object pointer (easier reference) * */
+/* * 0.5.1 - 05/14/2000 - G.Juyn * */
+/* * - added cleanup of saved-data (SAVE/SEEK processing) * */
+/* * 0.5.1 - 05/16/2000 - G.Juyn * */
+/* * - moved the actual write_graphic functionality from here * */
+/* * to its appropriate function in the mng_write module * */
+/* * * */
+/* * 0.5.2 - 05/19/2000 - G.Juyn * */
+/* * - cleaned up some code regarding mixed support * */
+/* * - added JNG support * */
+/* * 0.5.2 - 05/24/2000 - G.Juyn * */
+/* * - moved init of default zlib parms here from "mng_zlib.c" * */
+/* * - added init of default IJG parms * */
+/* * 0.5.2 - 05/29/2000 - G.Juyn * */
+/* * - fixed inconsistancy with freeing global iCCP profile * */
+/* * 0.5.2 - 05/30/2000 - G.Juyn * */
+/* * - added delta-image field initialization * */
+/* * 0.5.2 - 06/06/2000 - G.Juyn * */
+/* * - added initialization of the buffer-suspend parameter * */
+/* * * */
+/* * 0.5.3 - 06/16/2000 - G.Juyn * */
+/* * - added initialization of update-region for refresh * */
+/* * - added initialization of Needrefresh parameter * */
+/* * 0.5.3 - 06/17/2000 - G.Juyn * */
+/* * - added initialization of Deltaimmediate * */
+/* * 0.5.3 - 06/21/2000 - G.Juyn * */
+/* * - added initialization of Speed * */
+/* * - added initialization of Imagelevel * */
+/* * 0.5.3 - 06/26/2000 - G.Juyn * */
+/* * - changed userdata variable to mng_ptr * */
+/* * 0.5.3 - 06/29/2000 - G.Juyn * */
+/* * - fixed initialization routine for new mng_handle type * */
+/* * * */
+/* * 0.9.1 - 07/06/2000 - G.Juyn * */
+/* * - changed mng_display_resume to allow to be called after * */
+/* * a suspension return with MNG_NEEDMOREDATA * */
+/* * - added returncode MNG_NEEDTIMERWAIT for timer breaks * */
+/* * 0.9.1 - 07/07/2000 - G.Juyn * */
+/* * - implemented support for freeze/reset/resume & go_xxxx * */
+/* * 0.9.1 - 07/08/2000 - G.Juyn * */
+/* * - added support for improved timing * */
+/* * - added support for improved I/O-suspension * */
+/* * 0.9.1 - 07/14/2000 - G.Juyn * */
+/* * - changed EOF processing behavior * */
+/* * 0.9.1 - 07/15/2000 - G.Juyn * */
+/* * - added callbacks for SAVE/SEEK processing * */
+/* * - added variable for NEEDSECTIONWAIT breaks * */
+/* * - added variable for freeze & reset processing * */
+/* * 0.9.1 - 07/17/2000 - G.Juyn * */
+/* * - added error cleanup processing * */
+/* * - fixed support for mng_display_reset() * */
+/* * - fixed suspension-buffering for 32K+ chunks * */
+/* * * */
+/* * 0.9.2 - 07/29/2000 - G.Juyn * */
+/* * - fixed small bugs in display processing * */
+/* * 0.9.2 - 07/31/2000 - G.Juyn * */
+/* * - fixed wrapping of suspension parameters * */
+/* * 0.9.2 - 08/04/2000 - G.Juyn * */
+/* * - B111096 - fixed large-buffer read-suspension * */
+/* * 0.9.2 - 08/05/2000 - G.Juyn * */
+/* * - changed file-prefixes * */
+/* * * */
+/* * 0.9.3 - 09/07/2000 - G.Juyn * */
+/* * - added support for new filter_types * */
+/* * 0.9.3 - 09/10/2000 - G.Juyn * */
+/* * - fixed DEFI behavior * */
+/* * 0.9.3 - 10/11/2000 - G.Juyn * */
+/* * - added support for nEED * */
+/* * 0.9.3 - 10/16/2000 - G.Juyn * */
+/* * - added optional support for bKGD for PNG images * */
+/* * - raised initial maximum canvas size * */
+/* * - added support for JDAA * */
+/* * 0.9.3 - 10/17/2000 - G.Juyn * */
+/* * - added callback to process non-critical unknown chunks * */
+/* * - fixed support for delta-images during read() / display() * */
+/* * 0.9.3 - 10/18/2000 - G.Juyn * */
+/* * - added closestream() processing for mng_cleanup() * */
+/* * 0.9.3 - 10/27/2000 - G.Juyn * */
+/* * - fixed separate read() & display() processing * */
+/* * * */
+/* * 0.9.4 - 11/20/2000 - G.Juyn * */
+/* * - fixed unwanted repetition in mng_readdisplay() * */
+/* * 0.9.4 - 11/24/2000 - G.Juyn * */
+/* * - moved restore of object 0 to libmng_display * */
+/* * * */
+/* * 1.0.1 - 02/08/2001 - G.Juyn * */
+/* * - added MEND processing callback * */
+/* * 1.0.1 - 02/13/2001 - G.Juyn * */
+/* * - fixed first FRAM_MODE=4 timing problem * */
+/* * 1.0.1 - 04/21/2001 - G.Juyn * */
+/* * - fixed bug with display_reset/display_resume (Thanks G!) * */
+/* * 1.0.1 - 04/22/2001 - G.Juyn * */
+/* * - fixed memory-leak (Thanks Gregg!) * */
+/* * 1.0.1 - 04/23/2001 - G.Juyn * */
+/* * - fixed reset_rundata to drop all objects * */
+/* * 1.0.1 - 04/25/2001 - G.Juyn * */
+/* * - moved mng_clear_cms to libmng_cms * */
+/* * * */
+/* * 1.0.2 - 06/23/2001 - G.Juyn * */
+/* * - added optimization option for MNG-video playback * */
+/* * - added processterm callback * */
+/* * 1.0.2 - 06/25/2001 - G.Juyn * */
+/* * - added option to turn off progressive refresh * */
+/* * * */
+/* * 1.0.5 - 07/08/2002 - G.Juyn * */
+/* * - B578572 - removed eMNGma hack (thanks Dimitri!) * */
+/* * 1.0.5 - 07/16/2002 - G.Juyn * */
+/* * - B581625 - large chunks fail with suspension reads * */
+/* * 1.0.5 - 08/19/2002 - G.Juyn * */
+/* * - B597134 - libmng pollutes the linker namespace * */
+/* * 1.0.5 - 09/15/2002 - G.Juyn * */
+/* * - fixed LOOP iteration=0 special case * */
+/* * 1.0.5 - 10/07/2002 - G.Juyn * */
+/* * - added another fix for misplaced TERM chunk * */
+/* * - completed support for condition=2 in TERM chunk * */
+/* * - added beta version function & constant * */
+/* * 1.0.5 - 10/11/2002 - G.Juyn * */
+/* * - added mng_status_dynamic to supports function * */
+/* * 1.0.5 - 11/04/2002 - G.Juyn * */
+/* * - changed FRAMECOUNT/LAYERCOUNT/PLAYTIME error to warning * */
+/* * 1.0.5 - 11/07/2002 - G.Juyn * */
+/* * - added support to get totals after mng_read() * */
+/* * 1.0.5 - 11/29/2002 - G.Juyn * */
+/* * - fixed goxxxxx() support for zero values * */
+/* * * */
+/* * 1.0.6 - 05/25/2003 - G.R-P * */
+/* * - added MNG_SKIPCHUNK_cHNK footprint optimizations * */
+/* * 1.0.6 - 07/11/2003 - G.R-P * */
+/* * - added conditionals zlib and jpeg property accessors * */
+/* * 1.0.6 - 07/14/2003 - G.R-P * */
+/* * - added conditionals around "mng_display_go*" and other * */
+/* * unused functions * */
+/* * 1.0.6 - 07/29/2003 - G.R-P * */
+/* * - added conditionals around PAST chunk support * */
+/* * * */
+/* * 1.0.7 - 03/07/2004 - G. Randers-Pehrson * */
+/* * - put gamma, cms-related declarations inside #ifdef * */
+/* * 1.0.7 - 03/10/2004 - G.R-P * */
+/* * - added conditionals around openstream/closestream * */
+/* * 1.0.7 - 03/24/2004 - G.R-P * */
+/* * - fixed zTXT -> zTXt typo * */
+/* * * */
+/* * 1.0.8 - 04/02/2004 - G.Juyn * */
+/* * - added CRC existence & checking flags * */
+/* * 1.0.8 - 04/10/2004 - G.Juyn * */
+/* * - added data-push mechanisms for specialized decoders * */
+/* * 1.0.8 - 07/06/2004 - G.R-P * */
+/* * - defend against using undefined openstream function * */
+/* * 1.0.8 - 08/02/2004 - G.Juyn * */
+/* * - added conditional to allow easier writing of large MNG's * */
+/* * * */
+/* * 1.0.9 - 08/17/2004 - G.R-P * */
+/* * - added more SKIPCHUNK conditionals * */
+/* * 1.0.9 - 09/25/2004 - G.Juyn * */
+/* * - replaced MNG_TWEAK_LARGE_FILES with permanent solution * */
+/* * 1.0.9 - 10/03/2004 - G.Juyn * */
+/* * - added function to retrieve current FRAM delay * */
+/* * 1.0.9 - 12/20/2004 - G.Juyn * */
+/* * - cleaned up macro-invocations (thanks to D. Airlie) * */
+/* * * */
+/* * 1.0.10 - 07/06/2005 - G.R-P * */
+/* * - added more SKIPCHUNK conditionals * */
+/* * 1.0.10 - 04/08/2007 - G.Juyn * */
+/* * - added support for mPNG proposal * */
+/* * 1.0.10 - 04/12/2007 - G.Juyn * */
+/* * - added support for ANG proposal * */
+/* * 1.0.10 - 07/06/2007 - G.R-P bugfix by Lucas Quintana * */
+/* * * */
+/* ************************************************************************** */
+
+#include "libmng.h"
+#include "libmng_data.h"
+#include "libmng_error.h"
+#include "libmng_trace.h"
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+#include "libmng_objects.h"
+#include "libmng_object_prc.h"
+#include "libmng_chunks.h"
+#include "libmng_memory.h"
+#include "libmng_read.h"
+#include "libmng_write.h"
+#include "libmng_display.h"
+#include "libmng_zlib.h"
+#include "libmng_jpeg.h"
+#include "libmng_cms.h"
+#include "libmng_pixels.h"
+
+#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
+#pragma option -A /* force ANSI-C */
+#endif
+
+/* ************************************************************************** */
+/* * * */
+/* * local routines * */
+/* * * */
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+MNG_LOCAL mng_retcode mng_drop_objects (mng_datap pData,
+ mng_bool bDropaniobj)
+{
+ mng_objectp pObject;
+ mng_objectp pNext;
+ mng_cleanupobject fCleanup;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_START);
+#endif
+
+ pObject = pData->pFirstimgobj; /* get first stored image-object (if any) */
+
+ while (pObject) /* more objects to discard ? */
+ {
+ pNext = ((mng_object_headerp)pObject)->pNext;
+ /* call appropriate cleanup */
+ fCleanup = ((mng_object_headerp)pObject)->fCleanup;
+ fCleanup (pData, pObject);
+
+ pObject = pNext; /* neeeext */
+ }
+
+ pData->pFirstimgobj = MNG_NULL; /* clean this up!!! */
+ pData->pLastimgobj = MNG_NULL;
+
+ if (bDropaniobj) /* drop animation objects ? */
+ {
+ pObject = pData->pFirstaniobj; /* get first stored animation-object (if any) */
+
+ while (pObject) /* more objects to discard ? */
+ {
+ pNext = ((mng_object_headerp)pObject)->pNext;
+ /* call appropriate cleanup */
+ fCleanup = ((mng_object_headerp)pObject)->fCleanup;
+ fCleanup (pData, pObject);
+
+ pObject = pNext; /* neeeext */
+ }
+
+ pData->pFirstaniobj = MNG_NULL; /* clean this up!!! */
+ pData->pLastaniobj = MNG_NULL;
+
+#ifdef MNG_SUPPORT_DYNAMICMNG
+ pObject = pData->pFirstevent; /* get first event-object (if any) */
+
+ while (pObject) /* more objects to discard ? */
+ {
+ pNext = ((mng_object_headerp)pObject)->pNext;
+ /* call appropriate cleanup */
+ fCleanup = ((mng_object_headerp)pObject)->fCleanup;
+ fCleanup (pData, pObject);
+
+ pObject = pNext; /* neeeext */
+ }
+
+ pData->pFirstevent = MNG_NULL; /* clean this up!!! */
+ pData->pLastevent = MNG_NULL;
+#endif
+ }
+
+#ifdef MNG_INCLUDE_MPNG_PROPOSAL
+ if (pData->pMPNG) /* drop MPNG data (if any) */
+ {
+ fCleanup = ((mng_object_headerp)pData->pMPNG)->fCleanup;
+ fCleanup (pData, pData->pMPNG);
+ pData->pMPNG = MNG_NULL;
+ }
+#endif
+
+#ifdef MNG_INCLUDE_ANG_PROPOSAL
+ if (pData->pANG) /* drop ANG data (if any) */
+ {
+ fCleanup = ((mng_object_headerp)pData->pANG)->fCleanup;
+ fCleanup (pData, pData->pANG);
+ pData->pANG = MNG_NULL;
+ }
+#endif
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+#ifndef MNG_SKIPCHUNK_SAVE
+MNG_LOCAL mng_retcode mng_drop_savedata (mng_datap pData)
+{
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_START);
+#endif
+
+ if (pData->pSavedata) /* sanity check */
+ { /* address it more directly */
+ mng_savedatap pSave = pData->pSavedata;
+
+ if (pSave->iGlobalProfilesize) /* cleanup the profile ? */
+ MNG_FREEX (pData, pSave->pGlobalProfile, pSave->iGlobalProfilesize);
+ /* cleanup the save structure */
+ MNG_FREE (pData, pData->pSavedata, sizeof (mng_savedata));
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+MNG_LOCAL mng_retcode mng_reset_rundata (mng_datap pData)
+{
+ mng_drop_invalid_objects (pData); /* drop invalidly stored objects */
+#ifndef MNG_SKIPCHUNK_SAVE
+ mng_drop_savedata (pData); /* drop stored savedata */
+#endif
+ mng_reset_objzero (pData); /* reset object 0 */
+ /* drop stored objects (if any) */
+ mng_drop_objects (pData, MNG_FALSE);
+
+ pData->bFramedone = MNG_FALSE;
+ pData->iFrameseq = 0; /* reset counters & stuff */
+ pData->iLayerseq = 0;
+ pData->iFrametime = 0;
+
+ pData->bSkipping = MNG_FALSE;
+
+#ifdef MNG_SUPPORT_DYNAMICMNG
+ pData->bRunningevent = MNG_FALSE;
+ pData->bStopafterseek = MNG_FALSE;
+ pData->iEventx = 0;
+ pData->iEventy = 0;
+ pData->pLastmousemove = MNG_NULL;
+#endif
+
+ pData->iRequestframe = 0;
+ pData->iRequestlayer = 0;
+ pData->iRequesttime = 0;
+ pData->bSearching = MNG_FALSE;
+
+ pData->iRuntime = 0;
+ pData->iSynctime = 0;
+ pData->iStarttime = 0;
+ pData->iEndtime = 0;
+ pData->bRunning = MNG_FALSE;
+ pData->bTimerset = MNG_FALSE;
+ pData->iBreakpoint = 0;
+ pData->bSectionwait = MNG_FALSE;
+ pData->bFreezing = MNG_FALSE;
+ pData->bResetting = MNG_FALSE;
+ pData->bNeedrefresh = MNG_FALSE;
+ pData->bOnlyfirstframe = MNG_FALSE;
+ pData->iFramesafterTERM = 0;
+
+ pData->iIterations = 0;
+ /* start of animation objects! */
+ pData->pCurraniobj = MNG_NULL;
+
+ pData->iUpdateleft = 0; /* reset region */
+ pData->iUpdateright = 0;
+ pData->iUpdatetop = 0;
+ pData->iUpdatebottom = 0;
+ pData->iPLTEcount = 0; /* reset PLTE data */
+
+#ifndef MNG_SKIPCHUNK_DEFI
+ pData->iDEFIobjectid = 0; /* reset DEFI data */
+ pData->bDEFIhasdonotshow = MNG_FALSE;
+ pData->iDEFIdonotshow = 0;
+ pData->bDEFIhasconcrete = MNG_FALSE;
+ pData->iDEFIconcrete = 0;
+ pData->bDEFIhasloca = MNG_FALSE;
+ pData->iDEFIlocax = 0;
+ pData->iDEFIlocay = 0;
+ pData->bDEFIhasclip = MNG_FALSE;
+ pData->iDEFIclipl = 0;
+ pData->iDEFIclipr = 0;
+ pData->iDEFIclipt = 0;
+ pData->iDEFIclipb = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_BACK
+ pData->iBACKred = 0; /* reset BACK data */
+ pData->iBACKgreen = 0;
+ pData->iBACKblue = 0;
+ pData->iBACKmandatory = 0;
+ pData->iBACKimageid = 0;
+ pData->iBACKtile = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_FRAM
+ pData->iFRAMmode = 1; /* default global FRAM variables */
+ pData->iFRAMdelay = 1;
+ pData->iFRAMtimeout = 0x7fffffffl;
+ pData->bFRAMclipping = MNG_FALSE;
+ pData->iFRAMclipl = 0;
+ pData->iFRAMclipr = 0;
+ pData->iFRAMclipt = 0;
+ pData->iFRAMclipb = 0;
+
+ pData->iFramemode = 1; /* again for the current frame */
+ pData->iFramedelay = 1;
+ pData->iFrametimeout = 0x7fffffffl;
+ pData->bFrameclipping = MNG_FALSE;
+ pData->iFrameclipl = 0;
+ pData->iFrameclipr = 0;
+ pData->iFrameclipt = 0;
+ pData->iFrameclipb = 0;
+
+ pData->iNextdelay = 1;
+
+ pData->bForcedelay = MNG_FALSE;
+ pData->iAccumdelay = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_SHOW
+ pData->iSHOWmode = 0; /* reset SHOW data */
+ pData->iSHOWfromid = 0;
+ pData->iSHOWtoid = 0;
+ pData->iSHOWnextid = 0;
+ pData->iSHOWskip = 0;
+#endif
+
+ pData->iGlobalPLTEcount = 0; /* reset global PLTE data */
+
+ pData->iGlobalTRNSrawlen = 0; /* reset global tRNS data */
+
+ pData->iGlobalGamma = 0; /* reset global gAMA data */
+
+#ifndef MNG_SKIPCHUNK_cHRM
+ pData->iGlobalWhitepointx = 0; /* reset global cHRM data */
+ pData->iGlobalWhitepointy = 0;
+ pData->iGlobalPrimaryredx = 0;
+ pData->iGlobalPrimaryredy = 0;
+ pData->iGlobalPrimarygreenx = 0;
+ pData->iGlobalPrimarygreeny = 0;
+ pData->iGlobalPrimarybluex = 0;
+ pData->iGlobalPrimarybluey = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_sRGB
+ pData->iGlobalRendintent = 0; /* reset global sRGB data */
+#endif
+
+#ifndef MNG_SKIPCHUNK_iCCP
+ if (pData->iGlobalProfilesize) /* drop global profile (if any) */
+ MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize);
+
+ pData->iGlobalProfilesize = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_bKGD
+ pData->iGlobalBKGDred = 0; /* reset global bKGD data */
+ pData->iGlobalBKGDgreen = 0;
+ pData->iGlobalBKGDblue = 0;
+#endif
+#ifndef MNG_NO_DELTA_PNG
+ /* reset delta-image */
+ pData->pDeltaImage = MNG_NULL;
+ pData->iDeltaImagetype = 0;
+ pData->iDeltatype = 0;
+ pData->iDeltaBlockwidth = 0;
+ pData->iDeltaBlockheight = 0;
+ pData->iDeltaBlockx = 0;
+ pData->iDeltaBlocky = 0;
+ pData->bDeltaimmediate = MNG_FALSE;
+
+ pData->fDeltagetrow = MNG_NULL;
+ pData->fDeltaaddrow = MNG_NULL;
+ pData->fDeltareplacerow = MNG_NULL;
+ pData->fDeltaputrow = MNG_NULL;
+
+ pData->fPromoterow = MNG_NULL;
+ pData->fPromBitdepth = MNG_NULL;
+ pData->pPromBuf = MNG_NULL;
+ pData->iPromColortype = 0;
+ pData->iPromBitdepth = 0;
+ pData->iPromFilltype = 0;
+ pData->iPromWidth = 0;
+ pData->pPromSrc = MNG_NULL;
+ pData->pPromDst = MNG_NULL;
+#endif
+
+#ifndef MNG_SKIPCHUNK_MAGN
+ pData->iMAGNfromid = 0;
+ pData->iMAGNtoid = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_PAST
+ pData->iPastx = 0;
+ pData->iPasty = 0;
+#endif
+
+ pData->pLastseek = MNG_NULL;
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+MNG_LOCAL void cleanup_errors (mng_datap pData)
+{
+ pData->iErrorcode = MNG_NOERROR;
+ pData->iSeverity = 0;
+ pData->iErrorx1 = 0;
+ pData->iErrorx2 = 0;
+ pData->zErrortext = MNG_NULL;
+
+ return;
+}
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_READ
+MNG_LOCAL mng_retcode make_pushbuffer (mng_datap pData,
+ mng_ptr pPushdata,
+ mng_size_t iLength,
+ mng_bool bTakeownership,
+ mng_pushdatap * pPush)
+{
+ mng_pushdatap pTemp;
+
+ MNG_ALLOC (pData, pTemp, sizeof(mng_pushdata));
+
+ pTemp->pNext = MNG_NULL;
+
+ if (bTakeownership) /* are we going to own the buffer? */
+ { /* then just copy the pointer */
+ pTemp->pData = (mng_uint8p)pPushdata;
+ }
+ else
+ { /* otherwise create new buffer */
+ MNG_ALLOCX (pData, pTemp->pData, iLength);
+ if (!pTemp->pData) /* succeeded? */
+ {
+ MNG_FREEX (pData, pTemp, sizeof(mng_pushdata));
+ MNG_ERROR (pData, MNG_OUTOFMEMORY);
+ }
+ /* and copy the bytes across */
+ MNG_COPY (pTemp->pData, pPushdata, iLength);
+ }
+
+ pTemp->iLength = iLength;
+ pTemp->bOwned = bTakeownership;
+ pTemp->pDatanext = pTemp->pData;
+ pTemp->iRemaining = iLength;
+
+ *pPush = pTemp; /* return it */
+
+ return MNG_NOERROR; /* and all's well */
+}
+#endif
+
+#ifdef MNG_VERSION_QUERY_SUPPORT
+/* ************************************************************************** */
+/* * * */
+/* * Versioning control * */
+/* * * */
+/* ************************************************************************** */
+
+mng_pchar MNG_DECL mng_version_text (void)
+{
+ return MNG_VERSION_TEXT;
+}
+
+/* ************************************************************************** */
+
+mng_uint8 MNG_DECL mng_version_so (void)
+{
+ return MNG_VERSION_SO;
+}
+
+/* ************************************************************************** */
+
+mng_uint8 MNG_DECL mng_version_dll (void)
+{
+ return MNG_VERSION_DLL;
+}
+
+/* ************************************************************************** */
+
+mng_uint8 MNG_DECL mng_version_major (void)
+{
+ return MNG_VERSION_MAJOR;
+}
+
+/* ************************************************************************** */
+
+mng_uint8 MNG_DECL mng_version_minor (void)
+{
+ return MNG_VERSION_MINOR;
+}
+
+/* ************************************************************************** */
+
+mng_uint8 MNG_DECL mng_version_release (void)
+{
+ return MNG_VERSION_RELEASE;
+}
+
+/* ************************************************************************** */
+
+mng_bool MNG_DECL mng_version_beta (void)
+{
+ return MNG_VERSION_BETA;
+}
+#endif
+
+/* ************************************************************************** */
+/* * * */
+/* * 'supports' function * */
+/* * * */
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_FUNCQUERY
+typedef struct {
+ mng_pchar zFunction;
+ mng_uint8 iMajor; /* Major == 0 means not implemented ! */
+ mng_uint8 iMinor;
+ mng_uint8 iRelease;
+ } mng_func_entry;
+typedef mng_func_entry const * mng_func_entryp;
+
+MNG_LOCAL mng_func_entry const func_table [] =
+ { /* keep it alphabetically sorted !!!!! */
+ {"mng_cleanup", 1, 0, 0},
+ {"mng_copy_chunk", 1, 0, 5},
+ {"mng_create", 1, 0, 0},
+ {"mng_display", 1, 0, 0},
+ {"mng_display_freeze", 1, 0, 0},
+#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
+ {"mng_display_goframe", 1, 0, 0},
+ {"mng_display_golayer", 1, 0, 0},
+ {"mng_display_gotime", 1, 0, 0},
+#endif
+ {"mng_display_reset", 1, 0, 0},
+ {"mng_display_resume", 1, 0, 0},
+ {"mng_get_alphabitdepth", 1, 0, 0},
+ {"mng_get_alphacompression", 1, 0, 0},
+ {"mng_get_alphadepth", 1, 0, 0},
+ {"mng_get_alphafilter", 1, 0, 0},
+ {"mng_get_alphainterlace", 1, 0, 0},
+ {"mng_get_bgcolor", 1, 0, 0},
+ {"mng_get_bitdepth", 1, 0, 0},
+ {"mng_get_bkgdstyle", 1, 0, 0},
+ {"mng_get_cacheplayback", 1, 0, 2},
+ {"mng_get_canvasstyle", 1, 0, 0},
+ {"mng_get_colortype", 1, 0, 0},
+ {"mng_get_compression", 1, 0, 0},
+#ifndef MNG_NO_CURRENT_INFO
+ {"mng_get_currentframe", 1, 0, 0},
+ {"mng_get_currentlayer", 1, 0, 0},
+ {"mng_get_currentplaytime", 1, 0, 0},
+#endif
+ {"mng_get_currframdelay", 1, 0, 9},
+#ifndef MNG_NO_DFLT_INFO
+ {"mng_get_dfltimggamma", 1, 0, 0},
+ {"mng_get_dfltimggammaint", 1, 0, 0},
+#endif
+ {"mng_get_displaygamma", 1, 0, 0},
+ {"mng_get_displaygammaint", 1, 0, 0},
+ {"mng_get_doprogressive", 1, 0, 2},
+ {"mng_get_filter", 1, 0, 0},
+ {"mng_get_framecount", 1, 0, 0},
+ {"mng_get_imageheight", 1, 0, 0},
+ {"mng_get_imagelevel", 1, 0, 0},
+ {"mng_get_imagetype", 1, 0, 0},
+ {"mng_get_imagewidth", 1, 0, 0},
+ {"mng_get_interlace", 1, 0, 0},
+#ifdef MNG_ACCESS_JPEG
+ {"mng_get_jpeg_dctmethod", 1, 0, 0},
+ {"mng_get_jpeg_maxjdat", 1, 0, 0},
+ {"mng_get_jpeg_optimized", 1, 0, 0},
+ {"mng_get_jpeg_progressive", 1, 0, 0},
+ {"mng_get_jpeg_quality", 1, 0, 0},
+ {"mng_get_jpeg_smoothing", 1, 0, 0},
+#endif
+ {"mng_get_lastbackchunk", 1, 0, 3},
+ {"mng_get_lastseekname", 1, 0, 5},
+ {"mng_get_layercount", 1, 0, 0},
+#ifndef MNG_SKIP_MAXCANVAS
+ {"mng_get_maxcanvasheight", 1, 0, 0},
+ {"mng_get_maxcanvaswidth", 1, 0, 0},
+#endif
+ {"mng_get_playtime", 1, 0, 0},
+ {"mng_get_refreshpass", 1, 0, 0},
+ {"mng_get_runtime", 1, 0, 0},
+ {"mng_get_sectionbreaks", 1, 0, 0},
+ {"mng_get_sigtype", 1, 0, 0},
+ {"mng_get_simplicity", 1, 0, 0},
+ {"mng_get_speed", 1, 0, 0},
+ {"mng_get_srgb", 1, 0, 0},
+ {"mng_get_starttime", 1, 0, 0},
+ {"mng_get_storechunks", 1, 0, 0},
+ {"mng_get_suspensionmode", 1, 0, 0},
+ {"mng_get_ticks", 1, 0, 0},
+#ifndef MNG_NO_CURRENT_INFO
+ {"mng_get_totalframes", 1, 0, 5},
+ {"mng_get_totallayers", 1, 0, 5},
+ {"mng_get_totalplaytime", 1, 0, 5},
+#endif
+ {"mng_get_usebkgd", 1, 0, 0},
+ {"mng_get_userdata", 1, 0, 0},
+#if defined(MNG_FULL_CMS) || defined(MNG_GAMMA_ONLY) || defined(MNG_APP_CMS)
+ {"mng_get_viewgamma", 1, 0, 0},
+ {"mng_get_viewgammaint", 1, 0, 0},
+#endif
+#ifdef MNG_ACCESS_ZLIB
+ {"mng_get_zlib_level", 1, 0, 0},
+ {"mng_get_zlib_maxidat", 1, 0, 0},
+ {"mng_get_zlib_memlevel", 1, 0, 0},
+ {"mng_get_zlib_method", 1, 0, 0},
+ {"mng_get_zlib_strategy", 1, 0, 0},
+ {"mng_get_zlib_windowbits", 1, 0, 0},
+#endif
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ {"mng_getcb_closestream", 1, 0, 0},
+#endif
+ {"mng_getcb_errorproc", 1, 0, 0},
+ {"mng_getcb_getalphaline", 1, 0, 0},
+ {"mng_getcb_getbkgdline", 1, 0, 0},
+ {"mng_getcb_getcanvasline", 1, 0, 0},
+ {"mng_getcb_gettickcount", 1, 0, 0},
+ {"mng_getcb_memalloc", 1, 0, 0},
+ {"mng_getcb_memfree", 1, 0, 0},
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ {"mng_getcb_openstream", 1, 0, 0},
+#endif
+ {"mng_getcb_processarow", 1, 0, 0},
+ {"mng_getcb_processchroma", 1, 0, 0},
+ {"mng_getcb_processgamma", 1, 0, 0},
+ {"mng_getcb_processheader", 1, 0, 0},
+ {"mng_getcb_processiccp", 1, 0, 0},
+ {"mng_getcb_processmend", 1, 0, 1},
+ {"mng_getcb_processneed", 1, 0, 0},
+ {"mng_getcb_processsave", 1, 0, 0},
+ {"mng_getcb_processseek", 1, 0, 0},
+ {"mng_getcb_processsrgb", 1, 0, 0},
+ {"mng_getcb_processterm", 1, 0, 2},
+ {"mng_getcb_processtext", 1, 0, 0},
+ {"mng_getcb_processunknown", 1, 0, 0},
+ {"mng_getcb_readdata", 1, 0, 0},
+ {"mng_getcb_refresh", 1, 0, 0},
+ {"mng_getcb_releasedata", 1, 0, 8},
+ {"mng_getcb_settimer", 1, 0, 0},
+ {"mng_getcb_traceproc", 1, 0, 0},
+ {"mng_getcb_writedata", 1, 0, 0},
+ {"mng_getchunk_back", 1, 0, 0},
+ {"mng_getchunk_basi", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_bKGD
+ {"mng_getchunk_bkgd", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_cHRM
+ {"mng_getchunk_chrm", 1, 0, 0},
+#endif
+ {"mng_getchunk_clip", 1, 0, 0},
+ {"mng_getchunk_clon", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+#ifndef MNG_SKIPCHUNK_dBYK
+ {"mng_getchunk_dbyk", 1, 0, 0},
+#endif
+#endif
+ {"mng_getchunk_defi", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_getchunk_dhdr", 1, 0, 0},
+#endif
+ {"mng_getchunk_disc", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_getchunk_drop", 1, 0, 0},
+#endif
+ {"mng_getchunk_endl", 1, 0, 0},
+#ifdef MNG_INCLUDE_MPNG_PROPOSAL
+ {"mng_getchunk_mpng", 1, 0, 10},
+ {"mng_getchunk_mpng_frame", 1, 0, 10},
+#endif
+#ifndef MNG_SKIPCHUNK_evNT
+ {"mng_getchunk_evnt", 1, 0, 5},
+ {"mng_getchunk_evnt_entry", 1, 0, 5},
+#endif
+#ifndef MNG_SKIPCHUNK_eXPI
+ {"mng_getchunk_expi", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_fPRI
+ {"mng_getchunk_fpri", 1, 0, 0},
+#endif
+ {"mng_getchunk_fram", 1, 0, 0},
+ {"mng_getchunk_gama", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_hIST
+ {"mng_getchunk_hist", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_iCCP
+ {"mng_getchunk_iccp", 1, 0, 0},
+#endif
+ {"mng_getchunk_idat", 1, 0, 0},
+ {"mng_getchunk_iend", 1, 0, 0},
+ {"mng_getchunk_ihdr", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+#ifdef MNG_INCLUDE_JNG
+ {"mng_getchunk_ijng", 1, 0, 0},
+#endif
+ {"mng_getchunk_ipng", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_iTXt
+ {"mng_getchunk_itxt", 1, 0, 0},
+#endif
+#ifdef MNG_INCLUDE_JNG
+ {"mng_getchunk_jdaa", 1, 0, 0},
+ {"mng_getchunk_jdat", 1, 0, 0},
+ {"mng_getchunk_jhdr", 1, 0, 0},
+ {"mng_getchunk_jsep", 1, 0, 0},
+#endif
+ {"mng_getchunk_loop", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_MAGN
+ {"mng_getchunk_magn", 1, 0, 0},
+#endif
+ {"mng_getchunk_mend", 1, 0, 0},
+ {"mng_getchunk_mhdr", 1, 0, 0},
+ {"mng_getchunk_move", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_nEED
+ {"mng_getchunk_need", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_ORDR
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_getchunk_ordr", 1, 0, 0},
+ {"mng_getchunk_ordr_entry", 1, 0, 0},
+#endif
+#endif
+#ifndef MNG_SKIPCHUNK_PAST
+ {"mng_getchunk_past", 1, 0, 0},
+ {"mng_getchunk_past_src", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_pHYg
+ {"mng_getchunk_phyg", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_pHYs
+ {"mng_getchunk_phys", 1, 0, 0},
+#endif
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_getchunk_plte", 1, 0, 0},
+ {"mng_getchunk_pplt", 1, 0, 0},
+ {"mng_getchunk_pplt_entry", 1, 0, 0},
+ {"mng_getchunk_prom", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_SAVE
+ {"mng_getchunk_save", 1, 0, 0},
+ {"mng_getchunk_save_entry", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_sBIT
+ {"mng_getchunk_sbit", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_SEEK
+ {"mng_getchunk_seek", 1, 0, 0},
+#endif
+ {"mng_getchunk_show", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_sPLT
+ {"mng_getchunk_splt", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_sRGB
+ {"mng_getchunk_srgb", 1, 0, 0},
+#endif
+ {"mng_getchunk_term", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_tEXt
+ {"mng_getchunk_text", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_tIME
+ {"mng_getchunk_time", 1, 0, 0},
+#endif
+ {"mng_getchunk_trns", 1, 0, 0},
+ {"mng_getchunk_unkown", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_zTXt
+ {"mng_getchunk_ztxt", 1, 0, 0},
+#endif
+ {"mng_getimgdata_chunk", 0, 0, 0},
+ {"mng_getimgdata_chunkseq", 0, 0, 0},
+ {"mng_getimgdata_seq", 0, 0, 0},
+ {"mng_getlasterror", 1, 0, 0},
+ {"mng_initialize", 1, 0, 0},
+ {"mng_iterate_chunks", 1, 0, 0},
+ {"mng_putchunk_back", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_BASI
+ {"mng_putchunk_basi", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_bKGD
+ {"mng_putchunk_bkgd", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_cHRM
+ {"mng_putchunk_chrm", 1, 0, 0},
+#endif
+ {"mng_putchunk_clip", 1, 0, 0},
+ {"mng_putchunk_clon", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+#ifndef MNG_SKIPCHUNK_DBYK
+ {"mng_putchunk_dbyk", 1, 0, 0},
+#endif
+#endif
+ {"mng_putchunk_defi", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_putchunk_dhdr", 1, 0, 0},
+#endif
+ {"mng_putchunk_disc", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_putchunk_drop", 1, 0, 0},
+#endif
+ {"mng_putchunk_endl", 1, 0, 0},
+#ifdef MNG_INCLUDE_MPNG_PROPOSAL
+ {"mng_putchunk_mpng", 1, 0, 10},
+ {"mng_putchunk_mpng_frame", 1, 0, 10},
+#endif
+#ifndef MNG_SKIPCHUNK_evNT
+ {"mng_putchunk_evnt", 1, 0, 5},
+ {"mng_putchunk_evnt_entry", 1, 0, 5},
+#endif
+#ifndef MNG_SKIPCHUNK_eXPI
+ {"mng_putchunk_expi", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_fPRI
+ {"mng_putchunk_fpri", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_FRAM
+ {"mng_putchunk_fram", 1, 0, 0},
+#endif
+ {"mng_putchunk_gama", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_hIST
+ {"mng_putchunk_hist", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_iCCP
+ {"mng_putchunk_iccp", 1, 0, 0},
+#endif
+ {"mng_putchunk_idat", 1, 0, 0},
+ {"mng_putchunk_iend", 1, 0, 0},
+ {"mng_putchunk_ihdr", 1, 0, 0},
+#ifndef MNG_NO_DELTA_PNG
+#ifdef MNG_INCLUDE_JNG
+ {"mng_putchunk_ijng", 1, 0, 0},
+#endif
+ {"mng_putchunk_ipng", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_iTXt
+ {"mng_putchunk_itxt", 1, 0, 0},
+#endif
+#ifdef MNG_INCLUDE_JNG
+ {"mng_putchunk_jdaa", 1, 0, 0},
+ {"mng_putchunk_jdat", 1, 0, 0},
+ {"mng_putchunk_jhdr", 1, 0, 0},
+ {"mng_putchunk_jsep", 1, 0, 0},
+#endif
+ {"mng_putchunk_loop", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_MAGN
+ {"mng_putchunk_magn", 1, 0, 0},
+#endif
+ {"mng_putchunk_mend", 1, 0, 0},
+ {"mng_putchunk_mhdr", 1, 0, 0},
+ {"mng_putchunk_move", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_nEED
+ {"mng_putchunk_need", 1, 0, 0},
+#endif
+#ifndef MNG_NO_DELTA_PNG
+#ifndef MNG_SKIPCHUNK_ORDR
+ {"mng_putchunk_ordr", 1, 0, 0},
+ {"mng_putchunk_ordr_entry", 1, 0, 0},
+#endif
+#endif
+#ifndef MNG_SKIPCHUNK_PAST
+ {"mng_putchunk_past", 1, 0, 0},
+ {"mng_putchunk_past_src", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_pHYg
+ {"mng_putchunk_phyg", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_pHYs
+ {"mng_putchunk_phys", 1, 0, 0},
+#endif
+#ifndef MNG_NO_DELTA_PNG
+ {"mng_putchunk_plte", 1, 0, 0},
+ {"mng_putchunk_pplt", 1, 0, 0},
+ {"mng_putchunk_pplt_entry", 1, 0, 0},
+ {"mng_putchunk_prom", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_SAVE
+ {"mng_putchunk_save", 1, 0, 0},
+ {"mng_putchunk_save_entry", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_sBIT
+ {"mng_putchunk_sbit", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_SEEK
+ {"mng_putchunk_seek", 1, 0, 0},
+#endif
+ {"mng_putchunk_show", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_sPLT
+ {"mng_putchunk_splt", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_sRGB
+ {"mng_putchunk_srgb", 1, 0, 0},
+#endif
+ {"mng_putchunk_term", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_tEXt
+ {"mng_putchunk_text", 1, 0, 0},
+#endif
+#ifndef MNG_SKIPCHUNK_tIME
+ {"mng_putchunk_time", 1, 0, 0},
+#endif
+ {"mng_putchunk_trns", 1, 0, 0},
+ {"mng_putchunk_unkown", 1, 0, 0},
+#ifndef MNG_SKIPCHUNK_zTXt
+ {"mng_putchunk_ztxt", 1, 0, 0},
+#endif
+ {"mng_putimgdata_ihdr", 0, 0, 0},
+ {"mng_putimgdata_jhdr", 0, 0, 0},
+ {"mng_reset", 1, 0, 0},
+ {"mng_read", 1, 0, 0},
+ {"mng_read_pushchunk", 1, 0, 8},
+ {"mng_read_pushdata", 1, 0, 8},
+ {"mng_read_pushsig", 1, 0, 8},
+ {"mng_read_resume", 1, 0, 0},
+ {"mng_readdisplay", 1, 0, 0},
+ {"mng_set_bgcolor", 1, 0, 0},
+ {"mng_set_bkgdstyle", 1, 0, 0},
+ {"mng_set_cacheplayback", 1, 0, 2},
+ {"mng_set_canvasstyle", 1, 0, 0},
+ {"mng_set_dfltimggamma", 1, 0, 0},
+#ifndef MNG_NO_DFLT_INFO
+ {"mng_set_dfltimggammaint", 1, 0, 0},
+#endif
+ {"mng_set_displaygamma", 1, 0, 0},
+ {"mng_set_displaygammaint", 1, 0, 0},
+ {"mng_set_doprogressive", 1, 0, 2},
+#ifdef MNG_ACCESS_JPEG
+ {"mng_set_jpeg_dctmethod", 1, 0, 0},
+ {"mng_set_jpeg_maxjdat", 1, 0, 0},
+ {"mng_set_jpeg_optimized", 1, 0, 0},
+ {"mng_set_jpeg_progressive", 1, 0, 0},
+ {"mng_set_jpeg_quality", 1, 0, 0},
+ {"mng_set_jpeg_smoothing", 1, 0, 0},
+#endif
+#ifndef MNG_SKIP_MAXCANVAS
+ {"mng_set_maxcanvasheight", 1, 0, 0},
+ {"mng_set_maxcanvassize", 1, 0, 0},
+ {"mng_set_maxcanvaswidth", 1, 0, 0},
+#endif
+ {"mng_set_outputprofile", 1, 0, 0},
+ {"mng_set_outputprofile2", 1, 0, 0},
+ {"mng_set_outputsrgb", 1, 0, 1},
+ {"mng_set_sectionbreaks", 1, 0, 0},
+ {"mng_set_speed", 1, 0, 0},
+ {"mng_set_srgb", 1, 0, 0},
+ {"mng_set_srgbimplicit", 1, 0, 1},
+ {"mng_set_srgbprofile", 1, 0, 0},
+ {"mng_set_srgbprofile2", 1, 0, 0},
+ {"mng_set_storechunks", 1, 0, 0},
+ {"mng_set_suspensionmode", 1, 0, 0},
+ {"mng_set_usebkgd", 1, 0, 0},
+ {"mng_set_userdata", 1, 0, 0},
+#if defined(MNG_FULL_CMS) || defined(MNG_GAMMA_ONLY) || defined(MNG_APP_CMS)
+ {"mng_set_viewgamma", 1, 0, 0},
+ {"mng_set_viewgammaint", 1, 0, 0},
+#endif
+#ifdef MNG_ACCESS_ZLIB
+ {"mng_set_zlib_level", 1, 0, 0},
+ {"mng_set_zlib_maxidat", 1, 0, 0},
+ {"mng_set_zlib_memlevel", 1, 0, 0},
+ {"mng_set_zlib_method", 1, 0, 0},
+ {"mng_set_zlib_strategy", 1, 0, 0},
+ {"mng_set_zlib_windowbits", 1, 0, 0},
+#endif
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ {"mng_setcb_closestream", 1, 0, 0},
+#endif
+ {"mng_setcb_errorproc", 1, 0, 0},
+ {"mng_setcb_getalphaline", 1, 0, 0},
+ {"mng_setcb_getbkgdline", 1, 0, 0},
+ {"mng_setcb_getcanvasline", 1, 0, 0},
+ {"mng_setcb_gettickcount", 1, 0, 0},
+ {"mng_setcb_memalloc", 1, 0, 0},
+ {"mng_setcb_memfree", 1, 0, 0},
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ {"mng_setcb_openstream", 1, 0, 0},
+#endif
+ {"mng_setcb_processarow", 1, 0, 0},
+ {"mng_setcb_processchroma", 1, 0, 0},
+ {"mng_setcb_processgamma", 1, 0, 0},
+ {"mng_setcb_processheader", 1, 0, 0},
+ {"mng_setcb_processiccp", 1, 0, 0},
+ {"mng_setcb_processmend", 1, 0, 1},
+ {"mng_setcb_processneed", 1, 0, 0},
+ {"mng_setcb_processsave", 1, 0, 0},
+ {"mng_setcb_processseek", 1, 0, 0},
+ {"mng_setcb_processsrgb", 1, 0, 0},
+ {"mng_setcb_processterm", 1, 0, 2},
+ {"mng_setcb_processtext", 1, 0, 0},
+ {"mng_setcb_processunknown", 1, 0, 0},
+ {"mng_setcb_readdata", 1, 0, 0},
+ {"mng_setcb_refresh", 1, 0, 0},
+ {"mng_setcb_releasedata", 1, 0, 8},
+ {"mng_setcb_settimer", 1, 0, 0},
+ {"mng_setcb_traceproc", 1, 0, 0},
+ {"mng_setcb_writedata", 1, 0, 0},
+ {"mng_status_creating", 1, 0, 0},
+ {"mng_status_displaying", 1, 0, 0},
+ {"mng_status_dynamic", 1, 0, 5},
+ {"mng_status_error", 1, 0, 0},
+ {"mng_status_reading", 1, 0, 0},
+ {"mng_status_running", 1, 0, 0},
+ {"mng_status_runningevent", 1, 0, 5},
+ {"mng_status_suspendbreak", 1, 0, 0},
+ {"mng_status_timerbreak", 1, 0, 0},
+ {"mng_status_writing", 1, 0, 0},
+ {"mng_supports_func", 1, 0, 5},
+ {"mng_trapevent", 1, 0, 5},
+ {"mng_updatemngheader", 1, 0, 0},
+ {"mng_updatemngsimplicity", 1, 0, 0},
+ {"mng_version_beta", 1, 0, 5},
+ {"mng_version_dll", 1, 0, 0},
+ {"mng_version_major", 1, 0, 0},
+ {"mng_version_minor", 1, 0, 0},
+ {"mng_version_release", 1, 0, 0},
+ {"mng_version_so", 1, 0, 0},
+ {"mng_version_text", 1, 0, 0},
+ {"mng_write", 1, 0, 0},
+ };
+
+mng_bool MNG_DECL mng_supports_func (mng_pchar zFunction,
+ mng_uint8* iMajor,
+ mng_uint8* iMinor,
+ mng_uint8* iRelease)
+{
+ mng_int32 iTop, iLower, iUpper, iMiddle;
+ mng_func_entryp pEntry; /* pointer to found entry */
+ /* determine max index of table */
+ iTop = (sizeof (func_table) / sizeof (func_table [0])) - 1;
+
+ iLower = 0; /* initialize binary search */
+ iMiddle = iTop >> 1; /* start in the middle */
+ iUpper = iTop;
+ pEntry = 0; /* no goods yet! */
+
+ do /* the binary search itself */
+ {
+ mng_int32 iRslt = strcmp(func_table [iMiddle].zFunction, zFunction);
+ if (iRslt < 0)
+ iLower = iMiddle + 1;
+ else if (iRslt > 0)
+ iUpper = iMiddle - 1;
+ else
+ {
+ pEntry = &func_table [iMiddle];
+ break;
+ };
+
+ iMiddle = (iLower + iUpper) >> 1;
+ }
+ while (iLower <= iUpper);
+
+ if (pEntry) /* found it ? */
+ {
+ *iMajor = pEntry->iMajor;
+ *iMinor = pEntry->iMinor;
+ *iRelease = pEntry->iRelease;
+ return MNG_TRUE;
+ }
+ else
+ {
+ *iMajor = 0;
+ *iMinor = 0;
+ *iRelease = 0;
+ return MNG_FALSE;
+ }
+}
+#endif
+
+/* ************************************************************************** */
+/* * * */
+/* * HLAPI routines * */
+/* * * */
+/* ************************************************************************** */
+
+mng_handle MNG_DECL mng_initialize (mng_ptr pUserdata,
+ mng_memalloc fMemalloc,
+ mng_memfree fMemfree,
+ mng_traceproc fTraceproc)
+{
+ mng_datap pData;
+#ifdef MNG_SUPPORT_DISPLAY
+ mng_retcode iRetcode;
+ mng_imagep pImage;
+#endif
+
+#ifdef MNG_INTERNAL_MEMMNGMT /* allocate the main datastruc */
+ pData = (mng_datap)calloc (1, sizeof (mng_data));
+#else
+ pData = (mng_datap)fMemalloc (sizeof (mng_data));
+#endif
+
+ if (!pData)
+ return MNG_NULL; /* error: out of memory?? */
+ /* validate the structure */
+ pData->iMagic = MNG_MAGIC;
+ /* save userdata field */
+ pData->pUserdata = pUserdata;
+ /* remember trace callback */
+ pData->fTraceproc = fTraceproc;
+
+#ifdef MNG_SUPPORT_TRACE
+ if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_INITIALIZE))
+ {
+ MNG_FREEX (pData, pData, sizeof (mng_data));
+ return MNG_NULL;
+ }
+#endif
+ /* default canvas styles are 8-bit RGB */
+ pData->iCanvasstyle = MNG_CANVAS_RGB8;
+ pData->iBkgdstyle = MNG_CANVAS_RGB8;
+
+ pData->iBGred = 0; /* black */
+ pData->iBGgreen = 0;
+ pData->iBGblue = 0;
+
+ pData->bUseBKGD = MNG_TRUE;
+
+#ifdef MNG_FULL_CMS
+ pData->bIssRGB = MNG_TRUE;
+ pData->hProf1 = 0; /* no profiles yet */
+ pData->hProf2 = 0;
+ pData->hProf3 = 0;
+ pData->hTrans = 0;
+#endif
+
+ pData->dViewgamma = 1.0;
+ pData->dDisplaygamma = 2.2;
+ pData->dDfltimggamma = 0.45455;
+ /* initially remember chunks */
+ pData->bStorechunks = MNG_TRUE;
+ /* no breaks at section-borders */
+ pData->bSectionbreaks = MNG_FALSE;
+ /* initially cache playback info */
+ pData->bCacheplayback = MNG_TRUE;
+ /* progressive refresh for large images */
+ pData->bDoProgressive = MNG_TRUE;
+ /* crc exists; should check; error for
+ critical chunks; warning for ancillery;
+ generate crc for output */
+ pData->iCrcmode = MNG_CRC_DEFAULT;
+ /* normal animation-speed ! */
+ pData->iSpeed = mng_st_normal;
+ /* initial image limits */
+ pData->iMaxwidth = 10000;
+ pData->iMaxheight = 10000;
+
+#ifdef MNG_INTERNAL_MEMMNGMT /* internal management */
+ pData->fMemalloc = MNG_NULL;
+ pData->fMemfree = MNG_NULL;
+#else /* keep callbacks */
+ pData->fMemalloc = fMemalloc;
+ pData->fMemfree = fMemfree;
+#endif
+ /* no value (yet) */
+ pData->fReleasedata = MNG_NULL;
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ pData->fOpenstream = MNG_NULL;
+ pData->fClosestream = MNG_NULL;
+#endif
+ pData->fReaddata = MNG_NULL;
+ pData->fWritedata = MNG_NULL;
+ pData->fErrorproc = MNG_NULL;
+ pData->fProcessheader = MNG_NULL;
+ pData->fProcesstext = MNG_NULL;
+ pData->fProcesssave = MNG_NULL;
+ pData->fProcessseek = MNG_NULL;
+ pData->fProcessneed = MNG_NULL;
+ pData->fProcessmend = MNG_NULL;
+ pData->fProcessunknown = MNG_NULL;
+ pData->fProcessterm = MNG_NULL;
+ pData->fGetcanvasline = MNG_NULL;
+ pData->fGetbkgdline = MNG_NULL;
+ pData->fGetalphaline = MNG_NULL;
+ pData->fRefresh = MNG_NULL;
+ pData->fGettickcount = MNG_NULL;
+ pData->fSettimer = MNG_NULL;
+ pData->fProcessgamma = MNG_NULL;
+ pData->fProcesschroma = MNG_NULL;
+ pData->fProcesssrgb = MNG_NULL;
+ pData->fProcessiccp = MNG_NULL;
+ pData->fProcessarow = MNG_NULL;
+
+#if defined(MNG_SUPPORT_DISPLAY) && (defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS))
+ pData->dLastgamma = 0; /* lookup table needs first-time calc */
+#endif
+
+#ifdef MNG_SUPPORT_DISPLAY /* create object 0 */
+ iRetcode = mng_create_imageobject (pData, 0, MNG_TRUE, MNG_TRUE, MNG_TRUE,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, MNG_FALSE,
+ 0, 0, 0, 0, &pImage);
+
+ if (iRetcode) /* on error drop out */
+ {
+ MNG_FREEX (pData, pData, sizeof (mng_data));
+ return MNG_NULL;
+ }
+
+ pData->pObjzero = pImage;
+#endif
+
+#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_LCMS)
+ mnglcms_initlibrary (); /* init lcms particulars */
+#endif
+
+#ifdef MNG_SUPPORT_READ
+ pData->bSuspensionmode = MNG_FALSE;
+ pData->iSuspendbufsize = 0;
+ pData->pSuspendbuf = MNG_NULL;
+ pData->pSuspendbufnext = MNG_NULL;
+ pData->iSuspendbufleft = 0;
+ pData->iChunklen = 0;
+ pData->pReadbufnext = MNG_NULL;
+ pData->pLargebufnext = MNG_NULL;
+
+ pData->pFirstpushchunk = MNG_NULL;
+ pData->pLastpushchunk = MNG_NULL;
+ pData->pFirstpushdata = MNG_NULL;
+ pData->pLastpushdata = MNG_NULL;
+#endif
+
+#ifdef MNG_INCLUDE_ZLIB
+ mngzlib_initialize (pData); /* initialize zlib structures and such */
+ /* default zlib compression parameters */
+ pData->iZlevel = MNG_ZLIB_LEVEL;
+ pData->iZmethod = MNG_ZLIB_METHOD;
+ pData->iZwindowbits = MNG_ZLIB_WINDOWBITS;
+ pData->iZmemlevel = MNG_ZLIB_MEMLEVEL;
+ pData->iZstrategy = MNG_ZLIB_STRATEGY;
+ /* default maximum IDAT data size */
+ pData->iMaxIDAT = MNG_MAX_IDAT_SIZE;
+#endif
+
+#ifdef MNG_INCLUDE_JNG /* default IJG compression parameters */
+ pData->eJPEGdctmethod = MNG_JPEG_DCT;
+ pData->iJPEGquality = MNG_JPEG_QUALITY;
+ pData->iJPEGsmoothing = MNG_JPEG_SMOOTHING;
+ pData->bJPEGcompressprogr = MNG_JPEG_PROGRESSIVE;
+ pData->bJPEGcompressopt = MNG_JPEG_OPTIMIZED;
+ /* default maximum JDAT data size */
+ pData->iMaxJDAT = MNG_MAX_JDAT_SIZE;
+#endif
+
+ mng_reset ((mng_handle)pData);
+
+#ifdef MNG_SUPPORT_TRACE
+ if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_END))
+ {
+ MNG_FREEX (pData, pData, sizeof (mng_data));
+ return MNG_NULL;
+ }
+#endif
+
+ return (mng_handle)pData; /* if we get here, we're in business */
+}
+
+/* ************************************************************************** */
+
+mng_retcode MNG_DECL mng_reset (mng_handle hHandle)
+{
+ mng_datap pData;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)(hHandle)); /* address main structure */
+
+#ifdef MNG_SUPPORT_DISPLAY
+#ifndef MNG_SKIPCHUNK_SAVE
+ mng_drop_savedata (pData); /* cleanup saved-data from SAVE/SEEK */
+#endif
+#endif
+
+#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_FULL_CMS)
+ mng_clear_cms (pData); /* cleanup left-over cms stuff if any */
+#endif
+
+#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_JNG)
+ mngjpeg_cleanup (pData); /* cleanup jpeg stuff */
+#endif
+
+#ifdef MNG_INCLUDE_ZLIB
+ if (pData->bInflating) /* if we've been inflating */
+ {
+#ifdef MNG_INCLUDE_DISPLAY_PROCS
+ mng_cleanup_rowproc (pData); /* cleanup row-processing, */
+#endif
+ mngzlib_inflatefree (pData); /* cleanup inflate! */
+ }
+#endif /* MNG_INCLUDE_ZLIB */
+
+#ifdef MNG_SUPPORT_READ
+ if ((pData->bReading) && (!pData->bEOF))
+ mng_process_eof (pData); /* cleanup app streaming */
+ /* cleanup default read buffers */
+ MNG_FREE (pData, pData->pReadbuf, pData->iReadbufsize);
+ MNG_FREE (pData, pData->pLargebuf, pData->iLargebufsize);
+ MNG_FREE (pData, pData->pSuspendbuf, pData->iSuspendbufsize);
+
+ while (pData->pFirstpushdata) /* release any pushed data & chunks */
+ mng_release_pushdata (pData);
+ while (pData->pFirstpushchunk)
+ mng_release_pushchunk (pData);
+#endif
+
+#ifdef MNG_SUPPORT_WRITE /* cleanup default write buffer */
+ MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize);
+#endif
+
+#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
+ mng_drop_chunks (pData); /* drop stored chunks (if any) */
+#endif
+
+#ifdef MNG_SUPPORT_DISPLAY
+ mng_drop_objects (pData, MNG_TRUE); /* drop stored objects (if any) */
+
+#ifndef MNG_SKIPCHUNK_iCCP
+ if (pData->iGlobalProfilesize) /* drop global profile (if any) */
+ MNG_FREEX (pData, pData->pGlobalProfile, pData->iGlobalProfilesize);
+#endif
+#endif
+
+ pData->eSigtype = mng_it_unknown;
+ pData->eImagetype = mng_it_unknown;
+ pData->iWidth = 0; /* these are unknown yet */
+ pData->iHeight = 0;
+ pData->iTicks = 0;
+ pData->iLayercount = 0;
+ pData->iFramecount = 0;
+ pData->iPlaytime = 0;
+ pData->iSimplicity = 0;
+ pData->iAlphadepth = 16; /* assume the worst! */
+
+ pData->iImagelevel = 0; /* no image encountered */
+
+ pData->iMagnify = 0; /* 1-to-1 display */
+ pData->iOffsetx = 0; /* no offsets */
+ pData->iOffsety = 0;
+ pData->iCanvaswidth = 0; /* let the app decide during processheader */
+ pData->iCanvasheight = 0;
+ /* so far, so good */
+ pData->iErrorcode = MNG_NOERROR;
+ pData->iSeverity = 0;
+ pData->iErrorx1 = 0;
+ pData->iErrorx2 = 0;
+ pData->zErrortext = MNG_NULL;
+
+#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
+ /* let's assume the best scenario */
+#ifndef MNG_NO_OLD_VERSIONS
+ pData->bPreDraft48 = MNG_FALSE;
+#endif
+ /* the unknown chunk */
+ pData->iChunkname = MNG_UINT_HUH;
+ pData->iChunkseq = 0;
+ pData->pFirstchunk = MNG_NULL;
+ pData->pLastchunk = MNG_NULL;
+ /* nothing processed yet */
+ pData->bHasheader = MNG_FALSE;
+ pData->bHasMHDR = MNG_FALSE;
+ pData->bHasIHDR = MNG_FALSE;
+ pData->bHasBASI = MNG_FALSE;
+ pData->bHasDHDR = MNG_FALSE;
+#ifdef MNG_INCLUDE_JNG
+ pData->bHasJHDR = MNG_FALSE;
+ pData->bHasJSEP = MNG_FALSE;
+ pData->bHasJDAA = MNG_FALSE;
+ pData->bHasJDAT = MNG_FALSE;
+#endif
+ pData->bHasPLTE = MNG_FALSE;
+ pData->bHasTRNS = MNG_FALSE;
+ pData->bHasGAMA = MNG_FALSE;
+ pData->bHasCHRM = MNG_FALSE;
+ pData->bHasSRGB = MNG_FALSE;
+ pData->bHasICCP = MNG_FALSE;
+ pData->bHasBKGD = MNG_FALSE;
+ pData->bHasIDAT = MNG_FALSE;
+
+ pData->bHasSAVE = MNG_FALSE;
+ pData->bHasBACK = MNG_FALSE;
+ pData->bHasFRAM = MNG_FALSE;
+ pData->bHasTERM = MNG_FALSE;
+ pData->bHasLOOP = MNG_FALSE;
+ /* there's no global stuff yet either */
+ pData->bHasglobalPLTE = MNG_FALSE;
+ pData->bHasglobalTRNS = MNG_FALSE;
+ pData->bHasglobalGAMA = MNG_FALSE;
+ pData->bHasglobalCHRM = MNG_FALSE;
+ pData->bHasglobalSRGB = MNG_FALSE;
+ pData->bHasglobalICCP = MNG_FALSE;
+
+ pData->iDatawidth = 0; /* no IHDR/BASI/DHDR done yet */
+ pData->iDataheight = 0;
+ pData->iBitdepth = 0;
+ pData->iColortype = 0;
+ pData->iCompression = 0;
+ pData->iFilter = 0;
+ pData->iInterlace = 0;
+
+#ifdef MNG_INCLUDE_JNG
+ pData->iJHDRcolortype = 0; /* no JHDR data */
+ pData->iJHDRimgbitdepth = 0;
+ pData->iJHDRimgcompression = 0;
+ pData->iJHDRimginterlace = 0;
+ pData->iJHDRalphabitdepth = 0;
+ pData->iJHDRalphacompression = 0;
+ pData->iJHDRalphafilter = 0;
+ pData->iJHDRalphainterlace = 0;
+#endif
+
+#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
+
+#ifdef MNG_SUPPORT_READ /* no reading done */
+ pData->bReading = MNG_FALSE;
+ pData->bHavesig = MNG_FALSE;
+ pData->bEOF = MNG_FALSE;
+ pData->iReadbufsize = 0;
+ pData->pReadbuf = MNG_NULL;
+
+ pData->iLargebufsize = 0;
+ pData->pLargebuf = MNG_NULL;
+
+ pData->iSuspendtime = 0;
+ pData->bSuspended = MNG_FALSE;
+ pData->iSuspendpoint = 0;
+
+ pData->pSuspendbufnext = pData->pSuspendbuf;
+ pData->iSuspendbufleft = 0;
+#endif /* MNG_SUPPORT_READ */
+
+#ifdef MNG_SUPPORT_WRITE /* no creating/writing done */
+ pData->bCreating = MNG_FALSE;
+ pData->bWriting = MNG_FALSE;
+ pData->iFirstchunkadded = 0;
+ pData->iWritebufsize = 0;
+ pData->pWritebuf = MNG_NULL;
+#endif /* MNG_SUPPORT_WRITE */
+
+#ifdef MNG_SUPPORT_DISPLAY /* done nuttin' yet */
+ pData->bDisplaying = MNG_FALSE;
+ pData->iFrameseq = 0;
+ pData->iLayerseq = 0;
+ pData->iFrametime = 0;
+
+ pData->iTotallayers = 0;
+ pData->iTotalframes = 0;
+ pData->iTotalplaytime = 0;
+
+ pData->bSkipping = MNG_FALSE;
+
+#ifdef MNG_SUPPORT_DYNAMICMNG
+ pData->bDynamic = MNG_FALSE;
+ pData->bRunningevent = MNG_FALSE;
+ pData->bStopafterseek = MNG_FALSE;
+ pData->iEventx = 0;
+ pData->iEventy = 0;
+ pData->pLastmousemove = MNG_NULL;
+#endif
+
+ pData->iRequestframe = 0;
+ pData->iRequestlayer = 0;
+ pData->iRequesttime = 0;
+ pData->bSearching = MNG_FALSE;
+
+ pData->bRestorebkgd = MNG_FALSE;
+
+ pData->iRuntime = 0;
+ pData->iSynctime = 0;
+ pData->iStarttime = 0;
+ pData->iEndtime = 0;
+ pData->bRunning = MNG_FALSE;
+ pData->bTimerset = MNG_FALSE;
+ pData->iBreakpoint = 0;
+ pData->bSectionwait = MNG_FALSE;
+ pData->bFreezing = MNG_FALSE;
+ pData->bResetting = MNG_FALSE;
+ pData->bNeedrefresh = MNG_FALSE;
+ pData->bMisplacedTERM = MNG_FALSE;
+ pData->bOnlyfirstframe = MNG_FALSE;
+ pData->iFramesafterTERM = 0;
+ /* these don't exist yet */
+ pData->pCurrentobj = MNG_NULL;
+ pData->pCurraniobj = MNG_NULL;
+ pData->pTermaniobj = MNG_NULL;
+ pData->pLastclone = MNG_NULL;
+ pData->pStoreobj = MNG_NULL;
+ pData->pStorebuf = MNG_NULL;
+ pData->pRetrieveobj = MNG_NULL;
+ /* no saved data ! */
+ pData->pSavedata = MNG_NULL;
+
+ pData->iUpdateleft = 0; /* no region updated yet */
+ pData->iUpdateright = 0;
+ pData->iUpdatetop = 0;
+ pData->iUpdatebottom = 0;
+
+ pData->iPass = -1; /* interlacing stuff and temp buffers */
+ pData->iRow = 0;
+ pData->iRowinc = 1;
+ pData->iCol = 0;
+ pData->iColinc = 1;
+ pData->iRowsamples = 0;
+ pData->iSamplemul = 0;
+ pData->iSampleofs = 0;
+ pData->iSamplediv = 0;
+ pData->iRowsize = 0;
+ pData->iRowmax = 0;
+ pData->iFilterofs = 0;
+ pData->iPixelofs = 1;
+ pData->iLevel0 = 0;
+ pData->iLevel1 = 0;
+ pData->iLevel2 = 0;
+ pData->iLevel3 = 0;
+ pData->pWorkrow = MNG_NULL;
+ pData->pPrevrow = MNG_NULL;
+ pData->pRGBArow = MNG_NULL;
+ pData->bIsRGBA16 = MNG_TRUE;
+ pData->bIsOpaque = MNG_TRUE;
+ pData->iFilterbpp = 1;
+
+ pData->iSourcel = 0; /* always initialized just before */
+ pData->iSourcer = 0; /* compositing the next layer */
+ pData->iSourcet = 0;
+ pData->iSourceb = 0;
+ pData->iDestl = 0;
+ pData->iDestr = 0;
+ pData->iDestt = 0;
+ pData->iDestb = 0;
+ /* lists are empty */
+ pData->pFirstimgobj = MNG_NULL;
+ pData->pLastimgobj = MNG_NULL;
+ pData->pFirstaniobj = MNG_NULL;
+ pData->pLastaniobj = MNG_NULL;
+#ifdef MNG_SUPPORT_DYNAMICMNG
+ pData->pFirstevent = MNG_NULL;
+ pData->pLastevent = MNG_NULL;
+#endif
+ /* no processing callbacks */
+ pData->fDisplayrow = MNG_NULL;
+ pData->fRestbkgdrow = MNG_NULL;
+ pData->fCorrectrow = MNG_NULL;
+ pData->fRetrieverow = MNG_NULL;
+ pData->fStorerow = MNG_NULL;
+ pData->fProcessrow = MNG_NULL;
+ pData->fDifferrow = MNG_NULL;
+ pData->fScalerow = MNG_NULL;
+ pData->fDeltarow = MNG_NULL;
+#ifndef MNG_SKIPCHUNK_PAST
+ pData->fFliprow = MNG_NULL;
+ pData->fTilerow = MNG_NULL;
+#endif
+ pData->fInitrowproc = MNG_NULL;
+
+ pData->iPLTEcount = 0; /* no PLTE data */
+
+#ifndef MNG_SKIPCHUNK_DEFI
+ pData->iDEFIobjectid = 0; /* no DEFI data */
+ pData->bDEFIhasdonotshow = MNG_FALSE;
+ pData->iDEFIdonotshow = 0;
+ pData->bDEFIhasconcrete = MNG_FALSE;
+ pData->iDEFIconcrete = 0;
+ pData->bDEFIhasloca = MNG_FALSE;
+ pData->iDEFIlocax = 0;
+ pData->iDEFIlocay = 0;
+ pData->bDEFIhasclip = MNG_FALSE;
+ pData->iDEFIclipl = 0;
+ pData->iDEFIclipr = 0;
+ pData->iDEFIclipt = 0;
+ pData->iDEFIclipb = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_BACK
+ pData->iBACKred = 0; /* no BACK data */
+ pData->iBACKgreen = 0;
+ pData->iBACKblue = 0;
+ pData->iBACKmandatory = 0;
+ pData->iBACKimageid = 0;
+ pData->iBACKtile = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_FRAM
+ pData->iFRAMmode = 1; /* default global FRAM variables */
+ pData->iFRAMdelay = 1;
+ pData->iFRAMtimeout = 0x7fffffffl;
+ pData->bFRAMclipping = MNG_FALSE;
+ pData->iFRAMclipl = 0;
+ pData->iFRAMclipr = 0;
+ pData->iFRAMclipt = 0;
+ pData->iFRAMclipb = 0;
+
+ pData->iFramemode = 1; /* again for the current frame */
+ pData->iFramedelay = 1;
+ pData->iFrametimeout = 0x7fffffffl;
+ pData->bFrameclipping = MNG_FALSE;
+ pData->iFrameclipl = 0;
+ pData->iFrameclipr = 0;
+ pData->iFrameclipt = 0;
+ pData->iFrameclipb = 0;
+
+ pData->iNextdelay = 1;
+
+ pData->bForcedelay = MNG_FALSE;
+ pData->iAccumdelay = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_SHOW
+ pData->iSHOWmode = 0; /* no SHOW data */
+ pData->iSHOWfromid = 0;
+ pData->iSHOWtoid = 0;
+ pData->iSHOWnextid = 0;
+ pData->iSHOWskip = 0;
+#endif
+
+ pData->iGlobalPLTEcount = 0; /* no global PLTE data */
+
+ pData->iGlobalTRNSrawlen = 0; /* no global tRNS data */
+
+ pData->iGlobalGamma = 0; /* no global gAMA data */
+
+#ifndef MNG_SKIPCHUNK_cHRM
+ pData->iGlobalWhitepointx = 0; /* no global cHRM data */
+ pData->iGlobalWhitepointy = 0;
+ pData->iGlobalPrimaryredx = 0;
+ pData->iGlobalPrimaryredy = 0;
+ pData->iGlobalPrimarygreenx = 0;
+ pData->iGlobalPrimarygreeny = 0;
+ pData->iGlobalPrimarybluex = 0;
+ pData->iGlobalPrimarybluey = 0;
+#endif
+
+ pData->iGlobalRendintent = 0; /* no global sRGB data */
+
+#ifndef MNG_SKIPCHUNK_iCCP
+ pData->iGlobalProfilesize = 0; /* no global iCCP data */
+ pData->pGlobalProfile = MNG_NULL;
+#endif
+
+#ifndef MNG_SKIPCHUNK_bKGD
+ pData->iGlobalBKGDred = 0; /* no global bKGD data */
+ pData->iGlobalBKGDgreen = 0;
+ pData->iGlobalBKGDblue = 0;
+#endif
+ /* no delta-image */
+#ifndef MNG_NO_DELTA_PNG
+ pData->pDeltaImage = MNG_NULL;
+ pData->iDeltaImagetype = 0;
+ pData->iDeltatype = 0;
+ pData->iDeltaBlockwidth = 0;
+ pData->iDeltaBlockheight = 0;
+ pData->iDeltaBlockx = 0;
+ pData->iDeltaBlocky = 0;
+ pData->bDeltaimmediate = MNG_FALSE;
+
+ pData->fDeltagetrow = MNG_NULL;
+ pData->fDeltaaddrow = MNG_NULL;
+ pData->fDeltareplacerow = MNG_NULL;
+ pData->fDeltaputrow = MNG_NULL;
+
+ pData->fPromoterow = MNG_NULL;
+ pData->fPromBitdepth = MNG_NULL;
+ pData->pPromBuf = MNG_NULL;
+ pData->iPromColortype = 0;
+ pData->iPromBitdepth = 0;
+ pData->iPromFilltype = 0;
+ pData->iPromWidth = 0;
+ pData->pPromSrc = MNG_NULL;
+ pData->pPromDst = MNG_NULL;
+#endif
+
+#ifndef MNG_SKIPCHUNK_MAGN
+ pData->iMAGNfromid = 0;
+ pData->iMAGNtoid = 0;
+#endif
+
+#ifndef MNG_SKIPCHUNK_PAST
+ pData->iPastx = 0;
+ pData->iPasty = 0;
+#endif
+
+ pData->pLastseek = MNG_NULL;
+#endif
+
+#ifdef MNG_INCLUDE_ZLIB
+ pData->bInflating = 0; /* no inflating or deflating */
+ pData->bDeflating = 0; /* going on at the moment */
+#endif
+
+#ifdef MNG_SUPPORT_DISPLAY /* reset object 0 */
+ mng_reset_objzero (pData);
+#endif
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+
+/* ************************************************************************** */
+
+mng_retcode MNG_DECL mng_cleanup (mng_handle* hHandle)
+{
+ mng_datap pData; /* local vars */
+#ifndef MNG_INTERNAL_MEMMNGMT
+ mng_memfree fFree;
+#endif
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (*hHandle) /* check validity handle */
+ pData = ((mng_datap)(*hHandle)); /* and address main structure */
+
+ mng_reset (*hHandle); /* do an implicit reset to cleanup most stuff */
+
+#ifdef MNG_SUPPORT_DISPLAY /* drop object 0 */
+ mng_free_imageobject (pData, (mng_imagep)pData->pObjzero);
+#endif
+
+#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_FULL_CMS)
+ if (pData->hProf2) /* output profile defined ? */
+ mnglcms_freeprofile (pData->hProf2);
+
+ if (pData->hProf3) /* sRGB profile defined ? */
+ mnglcms_freeprofile (pData->hProf3);
+#endif
+
+#ifdef MNG_INCLUDE_ZLIB
+ mngzlib_cleanup (pData); /* cleanup zlib stuff */
+#endif
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_CLEANUP)
+#endif
+
+ pData->iMagic = 0; /* invalidate the actual memory */
+
+#ifdef MNG_INTERNAL_MEMMNGMT
+ free ((void *)*hHandle); /* cleanup the data-structure */
+#else
+ fFree = ((mng_datap)*hHandle)->fMemfree;
+ fFree ((mng_ptr)*hHandle, sizeof (mng_data));
+#endif
+
+ *hHandle = 0; /* wipe pointer to inhibit future use */
+
+ return MNG_NOERROR; /* and we're done */
+}
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_READ
+mng_retcode MNG_DECL mng_read (mng_handle hHandle)
+{
+ mng_datap pData; /* local vars */
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+#ifndef MNG_INTERNAL_MEMMNGMT
+ MNG_VALIDCB (hHandle, fMemalloc)
+ MNG_VALIDCB (hHandle, fMemfree)
+#endif
+
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ MNG_VALIDCB (hHandle, fOpenstream)
+ MNG_VALIDCB (hHandle, fClosestream)
+#endif
+ MNG_VALIDCB (hHandle, fReaddata)
+
+#ifdef MNG_SUPPORT_DISPLAY /* valid at this point ? */
+ if ((pData->bReading) || (pData->bDisplaying))
+#else
+ if (pData->bReading)
+#endif
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+#ifdef MNG_SUPPORT_WRITE
+ if ((pData->bWriting) || (pData->bCreating))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+#endif
+
+ if (!pData->bCacheplayback) /* must store playback info to work!! */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ pData->bReading = MNG_TRUE; /* read only! */
+
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ if (pData->fOpenstream && !pData->fOpenstream (hHandle))
+ /* open it and start reading */
+ iRetcode = MNG_APPIOERROR;
+ else
+#endif
+ iRetcode = mng_read_graphic (pData);
+
+ if (pData->bEOF) /* already at EOF ? */
+ {
+ pData->bReading = MNG_FALSE; /* then we're no longer reading */
+
+#ifdef MNG_SUPPORT_DISPLAY
+ mng_reset_rundata (pData); /* reset rundata */
+#endif
+ }
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ if (pData->bSuspended) /* read suspension ? */
+ {
+ iRetcode = MNG_NEEDMOREDATA;
+ pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_END);
+#endif
+
+ return iRetcode;
+}
+#endif /* MNG_SUPPORT_READ */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_READ
+mng_retcode MNG_DECL mng_read_pushdata (mng_handle hHandle,
+ mng_ptr pData,
+ mng_size_t iLength,
+ mng_bool bTakeownership)
+{
+ mng_datap pMyData; /* local vars */
+ mng_pushdatap pPush;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHDATA, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pMyData = ((mng_datap)hHandle); /* and make it addressable */
+ /* create a containing buffer */
+ iRetcode = make_pushbuffer (pMyData, pData, iLength, bTakeownership, &pPush);
+ if (iRetcode)
+ return iRetcode;
+
+ if (pMyData->pLastpushdata) /* and update the buffer chain */
+ pMyData->pLastpushdata->pNext = pPush;
+ else
+ pMyData->pFirstpushdata = pPush;
+
+ pMyData->pLastpushdata = pPush;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHDATA, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_READ */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_READ
+mng_retcode MNG_DECL mng_read_pushsig (mng_handle hHandle,
+ mng_imgtype eSigtype)
+{
+ mng_datap pData; /* local vars */
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHSIG, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ if (pData->bHavesig) /* can we expect this call ? */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ pData->eSigtype = eSigtype;
+ pData->bHavesig = MNG_TRUE;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHSIG, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_READ */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_READ
+mng_retcode MNG_DECL mng_read_pushchunk (mng_handle hHandle,
+ mng_ptr pChunk,
+ mng_size_t iLength,
+ mng_bool bTakeownership)
+{
+ mng_datap pMyData; /* local vars */
+ mng_pushdatap pPush;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHCHUNK, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pMyData = ((mng_datap)hHandle); /* and make it addressable */
+ /* create a containing buffer */
+ iRetcode = make_pushbuffer (pMyData, pChunk, iLength, bTakeownership, &pPush);
+ if (iRetcode)
+ return iRetcode;
+
+ if (pMyData->pLastpushchunk) /* and update the buffer chain */
+ pMyData->pLastpushchunk->pNext = pPush;
+ else
+ pMyData->pFirstpushchunk = pPush;
+
+ pMyData->pLastpushchunk = pPush;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_PUSHCHUNK, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_READ */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_READ
+mng_retcode MNG_DECL mng_read_resume (mng_handle hHandle)
+{
+ mng_datap pData; /* local vars */
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+ /* can we expect this call ? */
+ if ((!pData->bReading) || (!pData->bSuspended))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ pData->bSuspended = MNG_FALSE; /* reset the flag */
+
+#ifdef MNG_SUPPORT_DISPLAY /* re-synchronize ? */
+ if ((pData->bDisplaying) && (pData->bRunning))
+ pData->iSynctime = pData->iSynctime - pData->iSuspendtime +
+ pData->fGettickcount (hHandle);
+#endif
+
+ iRetcode = mng_read_graphic (pData); /* continue reading now */
+
+ if (pData->bEOF) /* at EOF ? */
+ {
+ pData->bReading = MNG_FALSE; /* then we're no longer reading */
+
+#ifdef MNG_SUPPORT_DISPLAY
+ mng_reset_rundata (pData); /* reset rundata */
+#endif
+ }
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ if (pData->bSuspended) /* read suspension ? */
+ {
+ iRetcode = MNG_NEEDMOREDATA;
+ pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_END);
+#endif
+
+ return iRetcode;
+}
+#endif /* MNG_SUPPORT_READ */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_WRITE
+mng_retcode MNG_DECL mng_write (mng_handle hHandle)
+{
+ mng_datap pData;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+#ifndef MNG_INTERNAL_MEMMNGMT
+ MNG_VALIDCB (hHandle, fMemalloc)
+ MNG_VALIDCB (hHandle, fMemfree)
+#endif
+
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ MNG_VALIDCB (hHandle, fOpenstream)
+ MNG_VALIDCB (hHandle, fClosestream)
+#endif
+ MNG_VALIDCB (hHandle, fWritedata)
+
+#ifdef MNG_SUPPORT_READ
+ if (pData->bReading) /* valid at this point ? */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+#endif
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ iRetcode = mng_write_graphic (pData);/* do the write */
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_WRITE */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_WRITE
+mng_retcode MNG_DECL mng_create (mng_handle hHandle)
+{
+ mng_datap pData;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+#ifndef MNG_INTERNAL_MEMMNGMT
+ MNG_VALIDCB (hHandle, fMemalloc)
+ MNG_VALIDCB (hHandle, fMemfree)
+#endif
+
+#ifdef MNG_SUPPORT_READ
+ if (pData->bReading) /* valid at this point ? */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+#endif
+
+ if ((pData->bWriting) || (pData->bCreating))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ iRetcode = mng_reset (hHandle); /* clear any previous stuff */
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ pData->bCreating = MNG_TRUE; /* indicate we're creating a new file */
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_WRITE */
+
+/* ************************************************************************** */
+
+#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_READ)
+mng_retcode MNG_DECL mng_readdisplay (mng_handle hHandle)
+{
+ mng_datap pData; /* local vars */
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+#ifndef MNG_INTERNAL_MEMMNGMT
+ MNG_VALIDCB (hHandle, fMemalloc)
+ MNG_VALIDCB (hHandle, fMemfree)
+#endif
+
+ MNG_VALIDCB (hHandle, fReaddata)
+ MNG_VALIDCB (hHandle, fGetcanvasline)
+ MNG_VALIDCB (hHandle, fRefresh)
+ MNG_VALIDCB (hHandle, fGettickcount)
+ MNG_VALIDCB (hHandle, fSettimer)
+ /* valid at this point ? */
+ if ((pData->bReading) || (pData->bDisplaying))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+#ifdef MNG_SUPPORT_WRITE
+ if ((pData->bWriting) || (pData->bCreating))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+#endif
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ pData->bReading = MNG_TRUE; /* read & display! */
+ pData->bDisplaying = MNG_TRUE;
+ pData->bRunning = MNG_TRUE;
+ pData->iFrameseq = 0;
+ pData->iLayerseq = 0;
+ pData->iFrametime = 0;
+ pData->iRequestframe = 0;
+ pData->iRequestlayer = 0;
+ pData->iRequesttime = 0;
+ pData->bSearching = MNG_FALSE;
+ pData->iRuntime = 0;
+ pData->iSynctime = pData->fGettickcount (hHandle);
+ pData->iSuspendtime = 0;
+ pData->iStarttime = pData->iSynctime;
+ pData->iEndtime = 0;
+
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ if (pData->fOpenstream && !pData->fOpenstream (hHandle))
+ /* open it and start reading */
+ iRetcode = MNG_APPIOERROR;
+ else
+#endif
+ iRetcode = mng_read_graphic (pData);
+
+ if (pData->bEOF) /* already at EOF ? */
+ {
+ pData->bReading = MNG_FALSE; /* then we're no longer reading */
+ mng_drop_invalid_objects (pData); /* drop invalidly stored objects */
+ }
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ if (pData->bSuspended) /* read suspension ? */
+ {
+ iRetcode = MNG_NEEDMOREDATA;
+ pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
+ }
+ else
+ if (pData->bTimerset) /* indicate timer break ? */
+ iRetcode = MNG_NEEDTIMERWAIT;
+ else
+ if (pData->bSectionwait) /* indicate section break ? */
+ iRetcode = MNG_NEEDSECTIONWAIT;
+ else
+ { /* no breaks = end of run */
+ pData->bRunning = MNG_FALSE;
+
+ if (pData->bFreezing) /* dynamic MNG reached SEEK ? */
+ pData->bFreezing = MNG_FALSE; /* reset it ! */
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_END);
+#endif
+
+ return iRetcode;
+}
+#endif /* MNG_SUPPORT_DISPLAY && MNG_SUPPORT_READ */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+mng_retcode MNG_DECL mng_display (mng_handle hHandle)
+{
+ mng_datap pData; /* local vars */
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+#ifndef MNG_INTERNAL_MEMMNGMT
+ MNG_VALIDCB (hHandle, fMemalloc)
+ MNG_VALIDCB (hHandle, fMemfree)
+#endif
+
+ MNG_VALIDCB (hHandle, fGetcanvasline)
+ MNG_VALIDCB (hHandle, fRefresh)
+ MNG_VALIDCB (hHandle, fGettickcount)
+ MNG_VALIDCB (hHandle, fSettimer)
+
+ if (pData->bDisplaying) /* valid at this point ? */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+#ifdef MNG_SUPPORT_READ
+ if (pData->bReading)
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+#endif
+
+#ifdef MNG_SUPPORT_WRITE
+ if ((pData->bWriting) || (pData->bCreating))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+#endif
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ pData->bDisplaying = MNG_TRUE; /* display! */
+ pData->bRunning = MNG_TRUE;
+ pData->iFrameseq = 0;
+ pData->iLayerseq = 0;
+ pData->iFrametime = 0;
+ pData->iRequestframe = 0;
+ pData->iRequestlayer = 0;
+ pData->iRequesttime = 0;
+ pData->bSearching = MNG_FALSE;
+ pData->iRuntime = 0;
+ pData->iSynctime = pData->fGettickcount (hHandle);
+#ifdef MNG_SUPPORT_READ
+ pData->iSuspendtime = 0;
+#endif
+ pData->iStarttime = pData->iSynctime;
+ pData->iEndtime = 0;
+ pData->pCurraniobj = pData->pFirstaniobj;
+ /* go do it */
+ iRetcode = mng_process_display (pData);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ if (pData->bTimerset) /* indicate timer break ? */
+ iRetcode = MNG_NEEDTIMERWAIT;
+ else
+ { /* no breaks = end of run */
+ pData->bRunning = MNG_FALSE;
+
+ if (pData->bFreezing) /* dynamic MNG reached SEEK ? */
+ pData->bFreezing = MNG_FALSE; /* reset it ! */
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_END);
+#endif
+
+ return iRetcode;
+}
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+mng_retcode MNG_DECL mng_display_resume (mng_handle hHandle)
+{
+ mng_datap pData; /* local vars */
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ if (!pData->bDisplaying) /* can we expect this call ? */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+ /* was it running ? */
+ if ((pData->bRunning) || (pData->bReading))
+ { /* are we expecting this call ? */
+ if ((pData->bTimerset) || (pData->bSuspended) || (pData->bSectionwait))
+ {
+ pData->bTimerset = MNG_FALSE; /* reset the flags */
+ pData->bSectionwait = MNG_FALSE;
+
+#ifdef MNG_SUPPORT_READ
+ if (pData->bReading) /* set during read&display ? */
+ {
+ if (pData->bSuspended) /* calculate proper synchronization */
+ pData->iSynctime = pData->iSynctime - pData->iSuspendtime +
+ pData->fGettickcount (hHandle);
+ else
+ pData->iSynctime = pData->fGettickcount (hHandle);
+
+ pData->bSuspended = MNG_FALSE; /* now reset this flag */
+ /* and continue reading */
+ iRetcode = mng_read_graphic (pData);
+
+ if (pData->bEOF) /* already at EOF ? */
+ {
+ pData->bReading = MNG_FALSE; /* then we're no longer reading */
+ /* drop invalidly stored objects */
+ mng_drop_invalid_objects (pData);
+ }
+ }
+ else
+#endif /* MNG_SUPPORT_READ */
+ { /* synchronize timing */
+ pData->iSynctime = pData->fGettickcount (hHandle);
+ /* resume display processing */
+ iRetcode = mng_process_display (pData);
+ }
+ }
+ else
+ {
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+ }
+ }
+ else
+ { /* synchronize timing */
+ pData->iSynctime = pData->fGettickcount (hHandle);
+ pData->bRunning = MNG_TRUE; /* it's restarted again ! */
+ /* resume display processing */
+ iRetcode = mng_process_display (pData);
+ }
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ if (pData->bSuspended) /* read suspension ? */
+ {
+ iRetcode = MNG_NEEDMOREDATA;
+ pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
+ }
+ else
+ if (pData->bTimerset) /* indicate timer break ? */
+ iRetcode = MNG_NEEDTIMERWAIT;
+ else
+ if (pData->bSectionwait) /* indicate section break ? */
+ iRetcode = MNG_NEEDSECTIONWAIT;
+ else
+ { /* no breaks = end of run */
+ pData->bRunning = MNG_FALSE;
+
+ if (pData->bFreezing) /* trying to freeze ? */
+ pData->bFreezing = MNG_FALSE; /* then we're there */
+
+ if (pData->bResetting) /* trying to reset as well ? */
+ { /* full stop!!! */
+ pData->bDisplaying = MNG_FALSE;
+
+ iRetcode = mng_reset_rundata (pData);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_END);
+#endif
+
+ return iRetcode;
+}
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+mng_retcode MNG_DECL mng_display_freeze (mng_handle hHandle)
+{
+ mng_datap pData;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+ /* can we expect this call ? */
+ if ((!pData->bDisplaying) || (pData->bReading))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ if (pData->bRunning) /* is it running ? */
+ {
+ mng_retcode iRetcode;
+
+ pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */
+ /* continue "normal" processing */
+ iRetcode = mng_display_resume (hHandle);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+mng_retcode MNG_DECL mng_display_reset (mng_handle hHandle)
+{
+ mng_datap pData;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+ /* can we expect this call ? */
+ if ((!pData->bDisplaying) || (pData->bReading))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ if (!pData->bCacheplayback) /* must store playback info to work!! */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ if (pData->bRunning) /* is it running ? */
+ {
+ pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */
+ pData->bResetting = MNG_TRUE; /* indicate we're about to reset too */
+ /* continue normal processing ? */
+ iRetcode = mng_display_resume (hHandle);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+ else
+ { /* full stop!!! */
+ pData->bDisplaying = MNG_FALSE;
+
+ iRetcode = mng_reset_rundata (pData);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
+mng_retcode MNG_DECL mng_display_goframe (mng_handle hHandle,
+ mng_uint32 iFramenr)
+{
+ mng_datap pData;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
+ MNG_ERROR (pData, MNG_NOTANANIMATION);
+ /* can we expect this call ? */
+ if ((!pData->bDisplaying) || (pData->bRunning))
+ MNG_ERROR ((mng_datap)hHandle, MNG_FUNCTIONINVALID);
+
+ if (!pData->bCacheplayback) /* must store playback info to work!! */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ if (iFramenr > pData->iTotalframes) /* is the parameter within bounds ? */
+ MNG_ERROR (pData, MNG_FRAMENRTOOHIGH);
+ /* within MHDR bounds ? */
+ if ((pData->iFramecount) && (iFramenr > pData->iFramecount))
+ MNG_WARNING (pData, MNG_FRAMENRTOOHIGH);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ if (pData->iFrameseq > iFramenr) /* search from current or go back to start ? */
+ {
+ iRetcode = mng_reset_rundata (pData);
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+
+ if (iFramenr)
+ {
+ pData->iRequestframe = iFramenr; /* go find the requested frame then */
+ iRetcode = mng_process_display (pData);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ pData->bTimerset = MNG_FALSE; /* reset just to be safe */
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
+mng_retcode MNG_DECL mng_display_golayer (mng_handle hHandle,
+ mng_uint32 iLayernr)
+{
+ mng_datap pData;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
+ MNG_ERROR (pData, MNG_NOTANANIMATION);
+ /* can we expect this call ? */
+ if ((!pData->bDisplaying) || (pData->bRunning))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ if (!pData->bCacheplayback) /* must store playback info to work!! */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ if (iLayernr > pData->iTotallayers) /* is the parameter within bounds ? */
+ MNG_ERROR (pData, MNG_LAYERNRTOOHIGH);
+ /* within MHDR bounds ? */
+ if ((pData->iLayercount) && (iLayernr > pData->iLayercount))
+ MNG_WARNING (pData, MNG_LAYERNRTOOHIGH);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ if (pData->iLayerseq > iLayernr) /* search from current or go back to start ? */
+ {
+ iRetcode = mng_reset_rundata (pData);
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+
+ if (iLayernr)
+ {
+ pData->iRequestlayer = iLayernr; /* go find the requested layer then */
+ iRetcode = mng_process_display (pData);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ pData->bTimerset = MNG_FALSE; /* reset just to be safe */
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#ifdef MNG_SUPPORT_DISPLAY
+#ifndef MNG_NO_DISPLAY_GO_SUPPORTED
+mng_retcode MNG_DECL mng_display_gotime (mng_handle hHandle,
+ mng_uint32 iPlaytime)
+{
+ mng_datap pData;
+ mng_retcode iRetcode;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
+ MNG_ERROR (pData, MNG_NOTANANIMATION);
+ /* can we expect this call ? */
+ if ((!pData->bDisplaying) || (pData->bRunning))
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ if (!pData->bCacheplayback) /* must store playback info to work!! */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+ /* is the parameter within bounds ? */
+ if (iPlaytime > pData->iTotalplaytime)
+ MNG_ERROR (pData, MNG_PLAYTIMETOOHIGH);
+ /* within MHDR bounds ? */
+ if ((pData->iPlaytime) && (iPlaytime > pData->iPlaytime))
+ MNG_WARNING (pData, MNG_PLAYTIMETOOHIGH);
+
+ cleanup_errors (pData); /* cleanup previous errors */
+
+ if (pData->iFrametime > iPlaytime) /* search from current or go back to start ? */
+ {
+ iRetcode = mng_reset_rundata (pData);
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+
+ if (iPlaytime)
+ {
+ pData->iRequesttime = iPlaytime; /* go find the requested playtime then */
+ iRetcode = mng_process_display (pData);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+
+ pData->bTimerset = MNG_FALSE; /* reset just to be safe */
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif
+#endif /* MNG_SUPPORT_DISPLAY */
+
+/* ************************************************************************** */
+
+#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_DYNAMICMNG)
+mng_retcode MNG_DECL mng_trapevent (mng_handle hHandle,
+ mng_uint8 iEventtype,
+ mng_int32 iX,
+ mng_int32 iY)
+{
+ mng_datap pData;
+ mng_eventp pEvent;
+ mng_bool bFound = MNG_FALSE;
+ mng_retcode iRetcode;
+ mng_imagep pImage;
+ mng_uint8p pPixel;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_TRAPEVENT, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
+ MNG_ERROR (pData, MNG_NOTANANIMATION);
+
+ if (!pData->bDisplaying) /* can we expect this call ? */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+
+ if (!pData->bCacheplayback) /* must store playback info to work!! */
+ MNG_ERROR (pData, MNG_FUNCTIONINVALID);
+ /* let's find a matching event object */
+ pEvent = (mng_eventp)pData->pFirstevent;
+
+ while ((pEvent) && (!bFound))
+ { /* matching eventtype ? */
+ if (pEvent->iEventtype == iEventtype)
+ {
+ switch (pEvent->iMasktype) /* check X/Y on basis of masktype */
+ {
+ case MNG_MASK_NONE : /* no mask is easy */
+ {
+ bFound = MNG_TRUE;
+ break;
+ }
+
+ case MNG_MASK_BOX : /* inside the given box ? */
+ { /* right- and bottom-border don't count ! */
+ if ((iX >= pEvent->iLeft) && (iX < pEvent->iRight) &&
+ (iY >= pEvent->iTop) && (iY < pEvent->iBottom))
+ bFound = MNG_TRUE;
+ break;
+ }
+
+ case MNG_MASK_OBJECT : /* non-zero pixel in the image object ? */
+ {
+ pImage = mng_find_imageobject (pData, pEvent->iObjectid);
+ /* valid image ? */
+ if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
+ ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
+ ((mng_int32)pImage->pImgbuf->iWidth > iX) &&
+ ((mng_int32)pImage->pImgbuf->iHeight > iY))
+ {
+ pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iY) + iX);
+
+ if (*pPixel) /* non-zero ? */
+ bFound = MNG_TRUE;
+ }
+
+ break;
+ }
+
+ case MNG_MASK_OBJECTIX : /* pixel in the image object matches index ? */
+ {
+ pImage = mng_find_imageobject (pData, pEvent->iObjectid);
+ /* valid image ? */
+ if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
+ ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
+ ((mng_int32)pImage->pImgbuf->iWidth > iX) && (iX >= 0) &&
+ ((mng_int32)pImage->pImgbuf->iHeight > iY) && (iY >= 0))
+ {
+ pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iY) + iX);
+ /* matching index ? */
+ if (*pPixel == pEvent->iIndex)
+ bFound = MNG_TRUE;
+ }
+
+ break;
+ }
+
+ case MNG_MASK_BOXOBJECT : /* non-zero pixel in the image object ? */
+ {
+ mng_int32 iTempx = iX - pEvent->iLeft;
+ mng_int32 iTempy = iY - pEvent->iTop;
+
+ pImage = mng_find_imageobject (pData, pEvent->iObjectid);
+ /* valid image ? */
+ if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
+ ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
+ (iTempx < (mng_int32)pImage->pImgbuf->iWidth) &&
+ (iTempx >= 0) && (iX < pEvent->iRight) &&
+ (iTempy < (mng_int32)pImage->pImgbuf->iHeight) &&
+ (iTempy >= 0) && (iY < pEvent->iBottom))
+ {
+ pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iTempy) + iTempx);
+
+ if (*pPixel) /* non-zero ? */
+ bFound = MNG_TRUE;
+ }
+
+ break;
+ }
+
+ case MNG_MASK_BOXOBJECTIX : /* pixel in the image object matches index ? */
+ {
+ mng_int32 iTempx = iX - pEvent->iLeft;
+ mng_int32 iTempy = iY - pEvent->iTop;
+
+ pImage = mng_find_imageobject (pData, pEvent->iObjectid);
+ /* valid image ? */
+ if ((pImage) && (pImage->pImgbuf->iBitdepth <= 8) &&
+ ((pImage->pImgbuf->iColortype == 0) || (pImage->pImgbuf->iColortype == 3)) &&
+ (iTempx < (mng_int32)pImage->pImgbuf->iWidth) &&
+ (iTempx >= 0) && (iX < pEvent->iRight) &&
+ (iTempy < (mng_int32)pImage->pImgbuf->iHeight) &&
+ (iTempy >= 0) && (iY < pEvent->iBottom))
+ {
+ pPixel = pImage->pImgbuf->pImgdata + ((pImage->pImgbuf->iWidth * iTempy) + iTempx);
+ /* matching index ? */
+ if (*pPixel == pEvent->iIndex)
+ bFound = MNG_TRUE;
+ }
+
+ break;
+ }
+
+ }
+ }
+
+ if (!bFound) /* try the next one */
+ pEvent = (mng_eventp)pEvent->sHeader.pNext;
+ }
+ /* found one that's not the last mousemove ? */
+ if ((pEvent) && ((mng_objectp)pEvent != pData->pLastmousemove))
+ { /* can we start an event process now ? */
+ if ((!pData->bReading) && (!pData->bRunning))
+ {
+ pData->iEventx = iX; /* save coordinates */
+ pData->iEventy = iY;
+ /* do it then ! */
+ iRetcode = pEvent->sHeader.fProcess (pData, pEvent);
+
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ /* remember last mousemove event */
+ if (pEvent->iEventtype == MNG_EVENT_MOUSEMOVE)
+ pData->pLastmousemove = (mng_objectp)pEvent;
+ else
+ pData->pLastmousemove = MNG_NULL;
+ }
+ else
+ {
+
+ /* TODO: store unprocessed events or not ??? */
+
+ }
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_TRAPEVENT, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif
+
+/* ************************************************************************** */
+
+mng_retcode MNG_DECL mng_getlasterror (mng_handle hHandle,
+ mng_int8* iSeverity,
+ mng_chunkid* iChunkname,
+ mng_uint32* iChunkseq,
+ mng_int32* iExtra1,
+ mng_int32* iExtra2,
+ mng_pchar* zErrortext)
+{
+ mng_datap pData; /* local vars */
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_START);
+#endif
+
+ MNG_VALIDHANDLE (hHandle) /* check validity handle */
+ pData = ((mng_datap)hHandle); /* and make it addressable */
+
+ *iSeverity = pData->iSeverity; /* return the appropriate fields */
+
+#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
+ *iChunkname = pData->iChunkname;
+ *iChunkseq = pData->iChunkseq;
+#else
+ *iChunkname = MNG_UINT_HUH;
+ *iChunkseq = 0;
+#endif
+
+ *iExtra1 = pData->iErrorx1;
+ *iExtra2 = pData->iErrorx2;
+ *zErrortext = pData->zErrortext;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_END);
+#endif
+
+ return pData->iErrorcode; /* and the errorcode */
+}
+
+/* ************************************************************************** */
+/* * end of file * */
+/* ************************************************************************** */
+
+