| /* ************************************************************************** */ |
| /* * 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; |
| #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; |
| #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 * */ |
| /* ************************************************************************** */ |
| |
| |