/* ************************************************************************** */
/* * For conditions of distribution and use, * */
/* * see copyright notice in libmng.h * */
/* ************************************************************************** */
/* * * */
/* * project : libmng * */
/* * file : libmng_data.h copyright (c) 2000-2007 G.Juyn * */
/* * version : 1.0.10 * */
/* * * */
/* * purpose : main data structure definition * */
/* * * */
/* * author : G.Juyn * */
/* * * */
/* * comment : Definition of the library main data structure * */
/* * * */
/* * changes : 0.5.1 - 05/04/2000 - G.Juyn * */
/* * - added CRC table to main structure (for thread-safety) * */
/* * 0.5.1 - 05/06/2000 - G.Juyn * */
/* * - added iPLTEentries for checking hIST-length * */
/* * 0.5.1 - 05/08/2000 - G.Juyn * */
/* * - changed palette definition to exported palette-type * */
/* * - removed frozen indicator * */
/* * - added create/write indicators * */
/* * - changed strict-ANSI stuff * */
/* * 0.5.1 - 05/13/2000 - G.Juyn * */
/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
/* * - added TERM animation object pointer (easier reference) * */
/* * - added saved-data structure for SAVE/SEEK processing * */
/* * * */
/* * 0.5.2 - 05/18/2000 - G.Juyn * */
/* * - added fields for JNG support (IJG-based) * */
/* * 0.5.2 - 05/24/2000 - G.Juyn * */
/* * - changed global tRNS definition * */
/* * 0.5.2 - 05/30/2000 - G.Juyn * */
/* * - added delta-image fields * */
/* * 0.5.2 - 06/01/2000 - G.Juyn * */
/* * - added internal delta-image processing callbacks * */
/* * 0.5.2 - 06/02/2000 - G.Juyn * */
/* * - changed SWAP_ENDIAN to BIGENDIAN_SUPPORTED * */
/* * (contributed by Tim Rowley) * */
/* * - added getalphaline callback for RGB8_A8 canvasstyle * */
/* * 0.5.2 - 06/06/2000 - G.Juyn * */
/* * - added parameter for delayed buffer-processing * */
/* * * */
/* * 0.5.3 - 06/16/2000 - G.Juyn * */
/* * - added update-region parms for refresh calback * */
/* * - added Needrefresh parameter * */
/* * 0.5.3 - 06/17/2000 - G.Juyn * */
/* * - added Deltaimmediate parm for faster delta-processing * */
/* * 0.5.3 - 06/21/2000 - G.Juyn * */
/* * - added Speed parameter to facilitate testing * */
/* * - added Imagelevel parameter for processtext callback * */
/* * 0.5.3 - 06/26/2000 - G.Juyn * */
/* * - changed userdata variable to mng_ptr * */
/* * * */
/* * 0.9.1 - 07/07/2000 - G.Juyn * */
/* * - added variables for go_xxxx processing * */
/* * 0.9.1 - 07/08/2000 - G.Juyn * */
/* * - added variables for improved timing support * */
/* * 0.9.1 - 07/15/2000 - G.Juyn * */
/* * - added callbacks for SAVE/SEEK processing * */
/* * - added variable for NEEDSECTIONWAIT breaks * */
/* * - added variable for freeze & reset processing * */
/* * 0.9.1 - 07/17/2000 - G.Juyn * */
/* * - fixed suspension-buffering for 32K+ chunks * */
/* * * */
/* * 0.9.2 - 07/29/2000 - G.Juyn * */
/* * - removed Nextbackxxx fields (no longer used) * */
/* * 0.9.2 - 07/31/2000 - G.Juyn * */
/* * - fixed wrapping of suspension parameters * */
/* * 0.9.2 - 08/04/2000 - G.Juyn * */
/* * - B111096 - fixed large-buffer read-suspension * */
/* * 0.9.2 - 08/05/2000 - G.Juyn * */
/* * - changed file-prefixes * */
/* * * */
/* * 0.9.3 - 08/26/2000 - G.Juyn * */
/* * - added MAGN chunk * */
/* * 0.9.3 - 09/07/2000 - G.Juyn * */
/* * - added support for new filter_types * */
/* * 0.9.3 - 09/10/2000 - G.Juyn * */
/* * - fixed DEFI behavior * */
/* * 0.9.3 - 10/10/2000 - G.Juyn * */
/* * - added support for alpha-depth prediction * */
/* * 0.9.3 - 10/11/2000 - G.Juyn * */
/* * - added support for nEED * */
/* * 0.9.3 - 10/16/2000 - G.Juyn * */
/* * - added optional support for bKGD for PNG images * */
/* * - added support for JDAA * */
/* * 0.9.3 - 10/17/2000 - G.Juyn * */
/* * - added callback to process non-critical unknown chunks * */
/* * - fixed support for bKGD * */
/* * 0.9.3 - 10/19/2000 - G.Juyn * */
/* * - implemented delayed delta-processing * */
/* * 0.9.4 - 12/16/2000 - G.Juyn * */
/* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */
/* * * */
/* * 1.0.1 - 02/08/2001 - G.Juyn * */
/* * - added MEND processing callback * */
/* * 1.0.1 - 02/13/2001 - G.Juyn * */
/* * - fixed first FRAM_MODE=4 timing problem * */
/* * * */
/* * 1.0.2 - 06/23/2001 - G.Juyn * */
/* * - added optimization option for MNG-video playback * */
/* * - added processterm callback * */
/* * 1.0.2 - 06/25/2001 - G.Juyn * */
/* * - added option to turn off progressive refresh * */
/* * * */
/* * 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 - 08/15/2002 - G.Juyn * */
/* * - completed PROM support * */
/* * 1.0.5 - 09/15/2002 - G.Juyn * */
/* * - fixed LOOP iteration=0 special case * */
/* * 1.0.5 - 09/20/2002 - G.Juyn * */
/* * - finished support for BACK image & tiling * */
/* * 1.0.5 - 10/07/2002 - G.Juyn * */
/* * - added another fix for misplaced TERM chunk * */
/* * - completed support for condition=2 in TERM chunk * */
/* * 1.0.5 - 10/20/2002 - G.Juyn * */
/* * - fixed processing for multiple objects in MAGN * */
/* * - fixed display of visible target of PAST operation * */
/* * 1.0.5 - 11/07/2002 - G.Juyn * */
/* * - added support to get totals after mng_read() * */
/* * 1.0.5 - 24/02/2003 - G.Juyn * */
/* * - B683152 - libjpeg suspension not always honored correctly* */
/* * * */
/* * 1.0.6 - 04/11/2003 - G.Juyn * */
/* * - B719420 - fixed several MNG_APP_CMS problems * */
/* * 1.0.6 - 07/05/2003 - G. R-P * */
/* * - optionally use zlib's crc32() function * */
/* * 1.0.6 - 07/29/2003 - G.R-P * */
/* * - added SKIPCHUNK conditionals around PAST chunk support * */
/* * 1.0.6 - 08/17/2003 - G.R-P * */
/* * - added iPNGdepth member to pData structure * */
/* * * */
/* * 1.0.7 - 03/10/2004 - G.R-P * */
/* * - added conditionals around openstream/closestream * */
/* * 1.0.7 - 03/24/2004 - G.R-P * */
/* * - added more SKIPCHUNK conditionals * */
/* * * */
/* * 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 * */
/* * * */
/* * 1.0.9 - 12/11/2004 - G.Juyn * */
/* * - added conditional MNG_OPTIMIZE_DISPLAYCALLS * */
/* * * */
/* * 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 * */
/* * * */
/* ************************************************************************** */
#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
#pragma option -A /* force ANSI-C */
#endif
#ifndef _libmng_data_h_
#define _libmng_data_h_
/* ************************************************************************** */
#define MNG_MAGIC 0x52530a0aL
/* ************************************************************************** */
/* * * */
/* * Internal structures * */
/* * * */
/* ************************************************************************** */
typedef mng_palette8 mng_rgbpaltab;
/* ************************************************************************** */
/* * * */
/* * The saved_data structure * */
/* * * */
/* * This contains the saved data after a SAVE chunk has been processed. * */
/* * The data is saved from the main data structure during SAVE processing, * */
/* * and restored to the main data structure during SEEK processing. * */
/* * * */
/* ************************************************************************** */
typedef struct mng_savedata_struct {
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_bool bHasglobalPLTE; /* global PLTE chunk processed */
mng_bool bHasglobalTRNS; /* global tRNS chunk processed */
mng_bool bHasglobalGAMA; /* global gAMA chunk processed */
mng_bool bHasglobalCHRM; /* global cHRM chunk processed */
mng_bool bHasglobalSRGB; /* global sRGB chunk processed */
mng_bool bHasglobalICCP; /* global iCCP chunk processed */
mng_bool bHasglobalBKGD; /* global bKGD chunk processed */
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
#ifdef MNG_SUPPORT_DISPLAY
mng_uint16 iBACKred; /* BACK fields */
mng_uint16 iBACKgreen;
mng_uint16 iBACKblue;
mng_uint8 iBACKmandatory;
mng_uint16 iBACKimageid;
mng_uint8 iBACKtile;
mng_uint8 iFRAMmode; /* FRAM fields (global) */
mng_uint32 iFRAMdelay;
mng_uint32 iFRAMtimeout;
mng_bool bFRAMclipping;
mng_int32 iFRAMclipl;
mng_int32 iFRAMclipr;
mng_int32 iFRAMclipt;
mng_int32 iFRAMclipb;
mng_uint32 iGlobalPLTEcount; /* global PLTE fields */
mng_rgbpaltab aGlobalPLTEentries;
mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */
mng_uint8arr aGlobalTRNSrawdata;
mng_uint32 iGlobalGamma; /* global gAMA fields */
#ifndef MNG_SKIPCHUNK_cHRM
mng_uint32 iGlobalWhitepointx; /* global cHRM fields */
mng_uint32 iGlobalWhitepointy;
mng_uint32 iGlobalPrimaryredx;
mng_uint32 iGlobalPrimaryredy;
mng_uint32 iGlobalPrimarygreenx;
mng_uint32 iGlobalPrimarygreeny;
mng_uint32 iGlobalPrimarybluex;
mng_uint32 iGlobalPrimarybluey;
#endif
mng_uint8 iGlobalRendintent; /* global sRGB fields */
mng_uint32 iGlobalProfilesize; /* global iCCP fields */
mng_ptr pGlobalProfile;
mng_uint16 iGlobalBKGDred; /* global bKGD fields */
mng_uint16 iGlobalBKGDgreen;
mng_uint16 iGlobalBKGDblue;
#endif /* MNG_SUPPORT_DISPLAY */
} mng_savedata;
typedef mng_savedata * mng_savedatap;
/* ************************************************************************** */
/* * * */
/* * Internal buffer structure for data push mechanisms * */
/* * * */
/* ************************************************************************** */
typedef struct {
mng_ptr pNext; /* for linked list */
mng_ptr pData; /* used for chunks & data */
mng_uint32 iLength;
mng_bool bOwned;
mng_uint8p pDatanext; /* only used for data */
mng_uint32 iRemaining;
} mng_pushdata;
typedef mng_pushdata * mng_pushdatap;
/* ************************************************************************** */
/* * * */
/* * The main libmng data structure * */
/* * * */
/* * The handle used in all functions points to this structure which * */
/* * contains all volatile data necessary to process the network graphic. * */
/* * * */
/* ************************************************************************** */
typedef struct mng_data_struct {
mng_uint32 iMagic; /* magic number to validate
a given handle */
mng_ptr pUserdata; /* application workdata */
mng_imgtype eSigtype; /* image information */
mng_imgtype eImagetype; /* initially zeroed */
mng_uint32 iWidth; /* filled after header is processed */
mng_uint32 iHeight;
mng_uint32 iTicks; /* these only after MHDR */
mng_uint32 iLayercount;
mng_uint32 iFramecount;
mng_uint32 iPlaytime;
mng_uint32 iSimplicity;
mng_uint8 iAlphadepth; /* indicates expected alpha-depth */
mng_uint32 iImagelevel; /* level of image inside a stream */
mng_uint32 iCanvasstyle; /* layout of the drawing-canvas */
mng_uint32 iBkgdstyle; /* layout of the background-canvas */
mng_int8 iMagnify; /* magnification factor (not used yet) */
mng_uint32 iOffsetx; /* x-offset for extremely large image */
mng_uint32 iOffsety; /* y-offset for extremely large image */
mng_uint32 iCanvaswidth; /* real canvas size */
mng_uint32 iCanvasheight; /* must be set by processheader callback */
mng_uint16 iBGred; /* default background color */
mng_uint16 iBGgreen; /* initially "black" */
mng_uint16 iBGblue;
mng_bool bUseBKGD; /* preferred use of bKGD for PNG */
mng_bool bIssRGB; /* indicates sRGB system */
#ifdef MNG_FULL_CMS /* little CMS variables */
mng_cmsprof hProf1; /* image input profile */
mng_cmsprof hProf2; /* default output profile */
mng_cmsprof hProf3; /* default sRGB profile */
mng_cmstrans hTrans; /* current transformation handle */
#endif
mng_float dViewgamma; /* gamma calculation variables */
mng_float dDisplaygamma; /* initially set for sRGB conditions */
mng_float dDfltimggamma;
mng_bool bStorechunks; /* switch for storing chunkdata */
mng_bool bSectionbreaks; /* indicate NEEDSECTIONWAIT breaks */
mng_bool bCacheplayback; /* switch to cache playback info */
mng_bool bDoProgressive; /* progressive refresh for large images */
mng_uint32 iCrcmode; /* CRC existence & checking flags */
mng_speedtype iSpeed; /* speed-modifier for animations */
mng_uint32 iMaxwidth; /* maximum canvas size */
mng_uint32 iMaxheight; /* initially set to 1024 x 1024 */
mng_int32 iErrorcode; /* error reporting fields */
mng_int8 iSeverity;
mng_int32 iErrorx1;
mng_int32 iErrorx2;
mng_pchar zErrortext;
mng_memalloc fMemalloc; /* callback pointers */
mng_memfree fMemfree; /* initially nulled */
mng_releasedata fReleasedata;
#ifndef MNG_NO_OPEN_CLOSE_STREAM
mng_openstream fOpenstream;
mng_closestream fClosestream;
#endif
mng_readdata fReaddata;
mng_writedata fWritedata;
mng_errorproc fErrorproc;
mng_traceproc fTraceproc;
mng_processheader fProcessheader;
mng_processtext fProcesstext;
mng_processsave fProcesssave;
mng_processseek fProcessseek;
mng_processneed fProcessneed;
mng_processmend fProcessmend;
mng_processunknown fProcessunknown;
mng_processterm fProcessterm;
mng_getcanvasline fGetcanvasline;
mng_getbkgdline fGetbkgdline;
mng_getalphaline fGetalphaline;
mng_refresh fRefresh;
mng_gettickcount fGettickcount;
mng_settimer fSettimer;
mng_processgamma fProcessgamma;
mng_processchroma fProcesschroma;
mng_processsrgb fProcesssrgb;
mng_processiccp fProcessiccp;
mng_processarow fProcessarow;
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
#ifndef MNG_NO_OLD_VERSIONS
mng_bool bPreDraft48; /* flags ancient style draft */
#endif
mng_chunkid iChunkname; /* read/write-state variables */
mng_uint32 iChunkseq;
mng_chunkp pFirstchunk; /* double-linked list of */
mng_chunkp pLastchunk; /* stored chunk-structures */
mng_bool bHasheader; /* first header chunk processed */
mng_bool bHasMHDR; /* inside a MHDR-MEND sequence */
mng_bool bHasIHDR; /* inside a IHDR-IEND sequence */
mng_bool bHasBASI; /* inside a BASI-IEND sequence */
mng_bool bHasDHDR; /* inside a DHDR-IEND sequence */
#ifdef MNG_INCLUDE_JNG
mng_bool bHasJHDR; /* inside a JHDR-IEND sequence */
mng_bool bHasJSEP; /* passed the JSEP separator */
mng_bool bHasJDAA; /* at least 1 JDAA processed */
mng_bool bHasJDAT; /* at least 1 JDAT processed */
#endif
mng_bool bHasPLTE; /* PLTE chunk processed */
mng_bool bHasTRNS; /* tRNS chunk processed */
mng_bool bHasGAMA; /* gAMA chunk processed */
mng_bool bHasCHRM; /* cHRM chunk processed */
mng_bool bHasSRGB; /* sRGB chunk processed */
mng_bool bHasICCP; /* iCCP chunk processed */
mng_bool bHasBKGD; /* bKGD chunk processed */
mng_bool bHasIDAT; /* at least 1 IDAT processed */
mng_bool bHasSAVE; /* SAVE chunk processed */
mng_bool bHasBACK; /* BACK chunk processed */
mng_bool bHasFRAM; /* FRAM chunk processed */
mng_bool bHasTERM; /* TERM chunk processed */
mng_bool bHasLOOP; /* at least 1 LOOP open */
mng_bool bHasglobalPLTE; /* global PLTE chunk processed */
mng_bool bHasglobalTRNS; /* global tRNS chunk processed */
mng_bool bHasglobalGAMA; /* global gAMA chunk processed */
mng_bool bHasglobalCHRM; /* global cHRM chunk processed */
mng_bool bHasglobalSRGB; /* global sRGB chunk processed */
mng_bool bHasglobalICCP; /* global iCCP chunk processed */
mng_bool bHasglobalBKGD; /* global bKGD chunk processed */
mng_uint32 iDatawidth; /* IHDR/BASI/DHDR fields */
mng_uint32 iDataheight; /* valid if inside IHDR-IEND, */
mng_uint8 iBitdepth; /* BASI-IEND or DHDR-IEND */
mng_uint8 iColortype;
mng_uint8 iCompression;
mng_uint8 iFilter;
mng_uint8 iInterlace;
mng_uint32 iPLTEcount; /* PLTE fields */
#ifdef MNG_INCLUDE_JNG
mng_uint8 iJHDRcolortype; /* JHDR fields */
mng_uint8 iJHDRimgbitdepth; /* valid if inside JHDR-IEND */
mng_uint8 iJHDRimgcompression;
mng_uint8 iJHDRimginterlace;
mng_uint8 iJHDRalphabitdepth;
mng_uint8 iJHDRalphacompression;
mng_uint8 iJHDRalphafilter;
mng_uint8 iJHDRalphainterlace;
#endif
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
#ifdef MNG_SUPPORT_READ
mng_bool bReading; /* read processing variables */
mng_bool bHavesig;
mng_bool bEOF;
mng_uint32 iReadbufsize;
mng_uint8p pReadbuf;
mng_uint32 iLargebufsize; /* temp for very large chunks */
mng_uint8p pLargebuf;
mng_uint32 iSuspendtime; /* tickcount at last suspension */
mng_bool bSuspended; /* input-reading has been suspended;
we're expecting a call to
mng_read_resume! */
mng_uint8 iSuspendpoint; /* indicates at which point the flow
was broken to suspend input-reading */
mng_bool bSuspensionmode; /* I/O-suspension variables */
mng_uint32 iSuspendbufsize;
mng_uint8p pSuspendbuf;
mng_uint8p pSuspendbufnext;
mng_uint32 iSuspendbufleft;
mng_uint32 iChunklen; /* chunk length */
mng_uint8p pReadbufnext; /* 32K+ suspension-processing */
mng_uint8p pLargebufnext;
mng_pushdatap pFirstpushchunk; /* variables for push mechanisms */
mng_pushdatap pLastpushchunk;
mng_pushdatap pFirstpushdata;
mng_pushdatap pLastpushdata;
#endif /* MNG_SUPPORT_READ */
#ifdef MNG_SUPPORT_WRITE
mng_bool bCreating; /* create/write processing variables */
mng_bool bWriting;
mng_chunkid iFirstchunkadded;
mng_uint32 iWritebufsize;
mng_uint8p pWritebuf;
#endif
#ifdef MNG_SUPPORT_DISPLAY
mng_bool bDisplaying; /* display-state variables */
mng_bool bFramedone;
mng_uint32 iFrameseq;
mng_uint32 iLayerseq;
mng_uint32 iFrametime; /* millisecs */
mng_uint32 iTotalframes; /* end-totals after mng_read() */
mng_uint32 iTotallayers;
mng_uint32 iTotalplaytime; /* millisecs */
mng_bool bSkipping; /* LOOP iteration=0 */
#ifdef MNG_SUPPORT_DYNAMICMNG
mng_bool bDynamic; /* MNG is dynamic (eg. has events) */
mng_bool bRunningevent; /* currently processing an event */
mng_bool bStopafterseek; /* stop after next SEEK */
mng_int32 iEventx; /* X/Y of current event */
mng_int32 iEventy;
mng_objectp pLastmousemove; /* last event triggered */
#endif
mng_uint32 iRequestframe; /* go_xxxx variables */
mng_uint32 iRequestlayer;
mng_uint32 iRequesttime;
mng_bool bSearching;
mng_bool bRestorebkgd; /* flags restore required before IDAT/JDAT */
mng_uint32 iRuntime; /* millisecs since start */
mng_uint32 iSynctime; /* tickcount at last framesync */
mng_uint32 iStarttime; /* tickcount at start */
mng_uint32 iEndtime; /* tickcount at end */
mng_bool bRunning; /* animation is active */
mng_bool bTimerset; /* the timer has been set;
we're expecting a call to
mng_display_resume! */
mng_uint8 iBreakpoint; /* indicates at which point the
flow was broken to run the timer */
mng_bool bSectionwait; /* indicates a section break */
mng_bool bFreezing; /* indicates app requested a freeze */
mng_bool bResetting; /* indicates app requested a reset */
mng_bool bNeedrefresh; /* indicates screen-refresh is needed */
mng_bool bMisplacedTERM; /* indicates TERM is out of place */
mng_bool bOnlyfirstframe; /* show first frame after TERM and stop */
mng_uint32 iFramesafterTERM; /* determines frame-count after TERM */
mng_objectp pCurrentobj; /* current "object" */
mng_objectp pCurraniobj; /* current animation object
"to be"/"being" processed */
mng_objectp pTermaniobj; /* TERM animation object */
mng_uint32 iIterations; /* TERM/MEND iteration count */
mng_objectp pObjzero; /* "on-the-fly" image (object = 0) */
mng_objectp pLastclone; /* last clone */
mng_objectp pStoreobj; /* current store object for row routines */
mng_objectp pStorebuf; /* current store object-buffer for row routines */
mng_objectp pRetrieveobj; /* current retrieve object for row routines */
mng_savedatap pSavedata; /* pointer to saved data (after SAVE) */
mng_uint32 iUpdateleft; /* update region for refresh */
mng_uint32 iUpdateright;
mng_uint32 iUpdatetop;
mng_uint32 iUpdatebottom;
mng_int8 iPass; /* current interlacing pass;
negative value means no interlace */
mng_int32 iRow; /* current row counter */
mng_int32 iRowinc; /* row increment for this pass */
mng_int32 iCol; /* current starting column */
mng_int32 iColinc; /* column increment for this pass */
mng_int32 iRowsamples; /* nr. of samples in current workrow */
mng_int32 iSamplemul; /* needed to calculate rowsize */
mng_int32 iSampleofs; /* from rowsamples */
mng_int32 iSamplediv;
mng_int32 iRowsize; /* size of actual data in work row */
mng_int32 iRowmax; /* maximum size of data in work row */
mng_int32 iFilterofs; /* offset to filter-byte in work row */
mng_int32 iPixelofs; /* offset to pixel-bytes in work row */
mng_uint32 iLevel0; /* leveling variables */
mng_uint32 iLevel1;
mng_uint32 iLevel2;
mng_uint32 iLevel3;
mng_uint8p pWorkrow; /* working row of pixel-data */
mng_uint8p pPrevrow; /* previous row of pixel-data */
mng_uint8p pRGBArow; /* intermediate row of RGBA8 or RGBA16 data */
mng_bool bIsRGBA16; /* indicates intermediate row is RGBA16 */
mng_bool bIsOpaque; /* indicates intermediate row is fully opaque */
mng_int32 iFilterbpp; /* bpp index for filtering routines */
mng_int32 iSourcel; /* variables for showing objects */
mng_int32 iSourcer;
mng_int32 iSourcet;
mng_int32 iSourceb;
mng_int32 iDestl;
mng_int32 iDestr;
mng_int32 iDestt;
mng_int32 iDestb;
mng_objectp pFirstimgobj; /* double-linked list of */
mng_objectp pLastimgobj; /* image-object structures */
mng_objectp pFirstaniobj; /* double-linked list of */
mng_objectp pLastaniobj; /* animation-object structures */
#ifdef MNG_SUPPORT_DYNAMICMNG
mng_objectp pFirstevent; /* double-linked list of */
mng_objectp pLastevent; /* event-object structures */
#endif
#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS)
mng_uint8 aGammatab[256]; /* precomputed gamma lookup table */
mng_float dLastgamma; /* last gamma used to compute table */
#endif
mng_fptr fDisplayrow; /* internal callback to display an
uncompressed/unfiltered/
color-corrected row */
mng_fptr fRestbkgdrow; /* internal callback for restore-
background processing of a row */
mng_fptr fCorrectrow; /* internal callback to color-correct an
uncompressed/unfiltered row */
mng_fptr fRetrieverow; /* internal callback to retrieve an
uncompressed/unfiltered row of data */
mng_fptr fStorerow; /* internal callback to store an
uncompressed/unfiltered row of data */
mng_fptr fProcessrow; /* internal callback to process an
uncompressed row of data */
mng_fptr fDifferrow; /* internal callback to perform
added filter leveling and
differing on an unfiltered row */
mng_fptr fScalerow; /* internal callback to scale a
delta-row to the bitdepth of its target */
mng_fptr fDeltarow; /* internal callback to execute a
delta-row onto a target */
#ifndef MNG_SKIPCHUNK_PAST
mng_fptr fFliprow; /* internal callback to flip a row of pixels
left<->right for a PAST operation */
mng_fptr fTilerow; /* internal callback to tile a row of pixels
during a PAST operation */
#endif
mng_fptr fInitrowproc; /* internal callback to initialize
the row processing */
mng_uint16 iDEFIobjectid; /* DEFI fields */
mng_bool bDEFIhasdonotshow;
mng_uint8 iDEFIdonotshow;
mng_bool bDEFIhasconcrete;
mng_uint8 iDEFIconcrete;
mng_bool bDEFIhasloca;
mng_int32 iDEFIlocax;
mng_int32 iDEFIlocay;
mng_bool bDEFIhasclip;
mng_int32 iDEFIclipl;
mng_int32 iDEFIclipr;
mng_int32 iDEFIclipt;
mng_int32 iDEFIclipb;
mng_uint16 iBACKred; /* BACK fields */
mng_uint16 iBACKgreen;
mng_uint16 iBACKblue;
mng_uint8 iBACKmandatory;
mng_uint16 iBACKimageid;
mng_uint8 iBACKtile;
mng_int32 iBackimgoffsx; /* temp variables for restore_bkgd */
mng_int32 iBackimgoffsy;
mng_uint32 iBackimgwidth;
mng_uint32 iBackimgheight;
#ifndef MNG_SKIPCHUNK_FRAM
mng_uint8 iFRAMmode; /* FRAM fields (global) */
mng_uint32 iFRAMdelay;
mng_uint32 iFRAMtimeout;
mng_bool bFRAMclipping;
mng_int32 iFRAMclipl;
mng_int32 iFRAMclipr;
mng_int32 iFRAMclipt;
mng_int32 iFRAMclipb;
mng_uint8 iFramemode; /* current subframe variables */
mng_uint32 iFramedelay;
mng_uint32 iFrametimeout;
mng_bool bFrameclipping;
mng_int32 iFrameclipl;
mng_int32 iFrameclipr;
mng_int32 iFrameclipt;
mng_int32 iFrameclipb;
mng_uint32 iNextdelay; /* delay *after* next image */
#endif
#ifndef MNG_SKIPCHUNK_SHOW
mng_uint8 iSHOWmode; /* SHOW fields */
mng_uint16 iSHOWfromid;
mng_uint16 iSHOWtoid;
mng_uint16 iSHOWnextid;
mng_int16 iSHOWskip;
#endif
mng_uint32 iGlobalPLTEcount; /* global PLTE fields */
mng_rgbpaltab aGlobalPLTEentries;
mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */
mng_uint8arr aGlobalTRNSrawdata;
mng_uint32 iGlobalGamma; /* global gAMA fields */
#ifndef MNG_SKIPCHUNK_cHRM
mng_uint32 iGlobalWhitepointx; /* global cHRM fields */
mng_uint32 iGlobalWhitepointy;
mng_uint32 iGlobalPrimaryredx;
mng_uint32 iGlobalPrimaryredy;
mng_uint32 iGlobalPrimarygreenx;
mng_uint32 iGlobalPrimarygreeny;
mng_uint32 iGlobalPrimarybluex;
mng_uint32 iGlobalPrimarybluey;
#endif
mng_uint8 iGlobalRendintent; /* global sRGB fields */
#ifndef MNG_SKIPCHUNK_iCCP
mng_uint32 iGlobalProfilesize; /* global iCCP fields */
mng_ptr pGlobalProfile;
#endif
mng_uint16 iGlobalBKGDred; /* global bKGD fields */
mng_uint16 iGlobalBKGDgreen;
mng_uint16 iGlobalBKGDblue;
mng_ptr pDeltaImage; /* delta-image fields */
mng_uint8 iDeltaImagetype;
#endif /* MNG_SUPPORT_DISPLAY */
mng_uint8 iDeltatype; /* need this one in read processing !! */
#ifdef MNG_SUPPORT_DISPLAY
mng_uint32 iDeltaBlockwidth;
mng_uint32 iDeltaBlockheight;
mng_uint32 iDeltaBlockx;
mng_uint32 iDeltaBlocky;
mng_bool bDeltaimmediate;
mng_fptr fDeltagetrow; /* internal delta-proc callbacks */
mng_fptr fDeltaaddrow;
mng_fptr fDeltareplacerow;
mng_fptr fDeltaputrow;
#ifndef MNG_SKIPCHUNK_PROM
mng_fptr fPromoterow; /* internal PROM fields */
mng_fptr fPromBitdepth;
mng_ptr pPromBuf;
mng_uint8 iPromColortype;
mng_uint8 iPromBitdepth;
mng_uint8 iPromFilltype;
mng_uint32 iPromWidth;
mng_ptr pPromSrc;
mng_ptr pPromDst;
#endif
#ifndef MNG_SKIPCHUNK_MAGN
mng_uint16 iMAGNfromid;
mng_uint16 iMAGNcurrentid;
mng_uint16 iMAGNtoid;
#endif
#ifndef MNG_SKIPCHUNK_PAST
mng_uint16 iPASTid;
mng_int32 iPastx; /* target x/y of last PAST */
mng_int32 iPasty;
#endif
mng_objectp pLastseek; /* last processed ani_seek object */
#ifdef MNG_INCLUDE_MPNG_PROPOSAL
mng_objectp pMPNG; /* mpNG object if available */
#endif
#ifdef MNG_INCLUDE_ANG_PROPOSAL
mng_objectp pANG; /* ANG object if available */
#endif
#endif /* MNG_SUPPORT_DISPLAY */
#ifdef MNG_INCLUDE_ZLIB
z_stream sZlib; /* zlib (de)compression variables */
mng_int32 iZlevel; /* zlib compression parameters */
mng_int32 iZmethod;
mng_int32 iZwindowbits;
mng_int32 iZmemlevel;
mng_int32 iZstrategy;
mng_uint32 iMaxIDAT; /* maximum size of IDAT data */
mng_bool bInflating; /* indicates "inflate" in progress */
mng_bool bDeflating; /* indicates "deflate" in progress */
#endif /* MNG_INCLUDE_ZLIB */
#ifdef MNG_INCLUDE_JNG
mngjpeg_dctmethod eJPEGdctmethod; /* IJG compression variables */
mng_int32 iJPEGquality;
mng_int32 iJPEGsmoothing;
mng_bool bJPEGcompressprogr;
mng_bool bJPEGcompressopt;
mng_uint32 iMaxJDAT; /* maximum size of JDAT/JDAA data */
mngjpeg_compp pJPEGcinfo; /* compression structure */
mngjpeg_errorp pJPEGcerr; /* error-manager compress */
mngjpeg_decompp pJPEGdinfo; /* decompression structure (JDAT) */
mngjpeg_errorp pJPEGderr; /* error-manager decompress (JDAT) */
mngjpeg_sourcep pJPEGdsrc; /* source-manager decompress (JDAT) */
mngjpeg_decompp pJPEGdinfo2; /* decompression structure (JDAA) */
mngjpeg_errorp pJPEGderr2; /* error-manager decompress (JDAA) */
mngjpeg_sourcep pJPEGdsrc2; /* source-manager decompress (JDAA) */
mng_uint8p pJPEGbuf; /* buffer for JPEG (de)compression (JDAT) */
mng_uint32 iJPEGbufmax; /* allocated space for buffer (JDAT) */
mng_uint8p pJPEGcurrent; /* current pointer into buffer (JDAT) */
mng_uint32 iJPEGbufremain; /* remaining bytes in buffer (JDAT) */
mng_uint32 iJPEGtoskip; /* bytes to skip on next input-block (JDAT) */
mng_uint8p pJPEGbuf2; /* buffer for JPEG (de)compression (JDAA) */
mng_uint32 iJPEGbufmax2; /* allocated space for buffer (JDAA) */
mng_uint8p pJPEGcurrent2; /* current pointer into buffer (JDAA) */
mng_uint32 iJPEGbufremain2; /* remaining bytes in buffer (JDAA) */
mng_uint32 iJPEGtoskip2; /* bytes to skip on next input-block (JDAA) */
mng_uint8p pJPEGrow; /* buffer for a JPEG row of samples (JDAT) */
mng_uint32 iJPEGrowlen;
mng_uint8p pJPEGrow2; /* buffer for a JPEG row of samples (JDAA) */
mng_uint32 iJPEGrowlen2;
mng_bool bJPEGcompress; /* indicates "compress" initialized */
mng_bool bJPEGdecompress; /* indicates "decompress" initialized (JDAT) */
mng_bool bJPEGhasheader; /* indicates "readheader" succeeded (JDAT) */
mng_bool bJPEGdecostarted; /* indicates "decompress" started (JDAT) */
mng_bool bJPEGscanstarted; /* indicates "first scan" started (JDAT) */
mng_bool bJPEGscanending; /* indicates "finish_output" suspended (JDAT) */
mng_bool bJPEGprogressive; /* indicates a progressive image (JDAT) */
mng_bool bJPEGdecompress2; /* indicates "decompress" initialized (JDAA) */
mng_bool bJPEGhasheader2; /* indicates "readheader" succeeded (JDAA) */
mng_bool bJPEGdecostarted2; /* indicates "decompress" started (JDAA) */
mng_bool bJPEGscanstarted2; /* indicates "first scan" started (JDAA) */
mng_bool bJPEGprogressive2; /* indicates a progressive image (JDAA) */
mng_fptr fStorerow2; /* internal callback to store an
uncompressed/unfiltered row of JPEG-data (JDAT) */
mng_fptr fStorerow3; /* internal callback to store an
uncompressed/unfiltered row of JPEG-data (JDAA) */
mng_uint32 iJPEGrow; /* row-number for current JPEG row */
mng_uint32 iJPEGalpharow; /* nr. of rows filled with alpha */
mng_uint32 iJPEGrgbrow; /* nr. of rows filled with 'color'-info */
mng_uint32 iJPEGdisprow; /* nr. of rows already displayed "on-the-fly" */
#if defined(MNG_USE_SETJMP) && defined (MNG_INCLUDE_IJG6B)
jmp_buf sErrorbuf; /* setjmp/longjmp buffer (error-recovery) */
#endif
#endif /* MNG_INCLUDE_JNG */
#ifndef MNG_USE_ZLIB_CRC
mng_uint32 aCRCtable [256]; /* CRC prefab table */
mng_bool bCRCcomputed; /* "has been built" indicator */
#endif
#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT
png_imgtype ePng_imgtype;
#endif
#if defined(MNG_NO_1_2_4BIT_SUPPORT) || defined(MNG_NO_16BIT_SUPPORT)
mng_uint8 iPNGdepth; /* Real input depth */
mng_uint8 iPNGmult;
#endif
#ifdef MNG_OPTIMIZE_DISPLAYCALLS
mng_uint32 iRawlen; /* temp vars for display processing */
mng_uint8p pRawdata;
#ifndef MNG_SKIPCHUNK_BASI
mng_uint16 iBASIred;
mng_uint16 iBASIgreen;
mng_uint16 iBASIblue;
mng_bool bBASIhasalpha;
mng_uint16 iBASIalpha;
mng_uint8 iBASIviewable;
#endif
#ifndef MNG_SKIPCHUNK_CLON
mng_uint16 iCLONsourceid;
mng_uint16 iCLONcloneid;
mng_uint8 iCLONclonetype;
mng_bool bCLONhasdonotshow;
mng_uint8 iCLONdonotshow;
mng_uint8 iCLONconcrete;
mng_bool bCLONhasloca;
mng_uint8 iCLONlocationtype;
mng_int32 iCLONlocationx;
mng_int32 iCLONlocationy;
#endif
#ifndef MNG_SKIPCHUNK_DISC
mng_uint32 iDISCcount;
mng_uint16p pDISCids;
#endif
#ifndef MNG_SKIPCHUNK_FRAM
mng_uint8 iTempFramemode;
mng_uint8 iTempChangedelay;
mng_uint32 iTempDelay;
mng_uint8 iTempChangetimeout;
mng_uint32 iTempTimeout;
mng_uint8 iTempChangeclipping;
mng_uint8 iTempCliptype;
mng_int32 iTempClipl;
mng_int32 iTempClipr;
mng_int32 iTempClipt;
mng_int32 iTempClipb;
#endif
#ifndef MNG_SKIPCHUNK_MOVE
mng_uint16 iMOVEfromid;
mng_uint16 iMOVEtoid;
mng_uint8 iMOVEmovetype;
mng_int32 iMOVEmovex;
mng_int32 iMOVEmovey;
#endif
#ifndef MNG_SKIPCHUNK_CLIP
mng_uint16 iCLIPfromid;
mng_uint16 iCLIPtoid;
mng_uint8 iCLIPcliptype;
mng_int32 iCLIPclipl;
mng_int32 iCLIPclipr;
mng_int32 iCLIPclipt;
mng_int32 iCLIPclipb;
#endif
#ifndef MNG_NO_DELTA_PNG
mng_uint16 iDHDRobjectid;
mng_uint8 iDHDRimagetype;
mng_uint8 iDHDRdeltatype;
mng_uint32 iDHDRblockwidth;
mng_uint32 iDHDRblockheight;
mng_uint32 iDHDRblockx;
mng_uint32 iDHDRblocky;
mng_uint8 iPROMbitdepth;
mng_uint8 iPROMcolortype;
mng_uint8 iPROMfilltype;
mng_uint8 iPPLTtype;
mng_uint32 iPPLTcount;
mng_palette8ep paPPLTindexentries;
mng_uint8p paPPLTalphaentries;
mng_uint8p paPPLTusedentries;
#endif
#ifndef MNG_SKIPCHUNK_MAGN
mng_uint16 iMAGNfirstid;
mng_uint16 iMAGNlastid;
mng_uint8 iMAGNmethodX;
mng_uint16 iMAGNmX;
mng_uint16 iMAGNmY;
mng_uint16 iMAGNmL;
mng_uint16 iMAGNmR;
mng_uint16 iMAGNmT;
mng_uint16 iMAGNmB;
mng_uint8 iMAGNmethodY;
#endif
#ifndef MNG_SKIPCHUNK_PAST
mng_uint16 iPASTtargetid;
mng_uint8 iPASTtargettype;
mng_int32 iPASTtargetx;
mng_int32 iPASTtargety;
mng_uint32 iPASTcount;
mng_ptr pPASTsources;
#endif
#endif /* MNG_OPTIMIZE_DISPLAYCALLS */
} mng_data;
typedef mng_data * mng_datap;
/* ************************************************************************** */
/* * * */
/* * Internal Callback-Function prototypes * */
/* * * */
/* ************************************************************************** */
typedef mng_retcode(*mng_displayrow) (mng_datap pData);
typedef mng_retcode(*mng_restbkgdrow) (mng_datap pData);
typedef mng_retcode(*mng_correctrow) (mng_datap pData);
typedef mng_retcode(*mng_retrieverow) (mng_datap pData);
typedef mng_retcode(*mng_storerow) (mng_datap pData);
typedef mng_retcode(*mng_processrow) (mng_datap pData);
typedef mng_retcode(*mng_initrowproc) (mng_datap pData);
typedef mng_retcode(*mng_differrow) (mng_datap pData);
typedef mng_retcode(*mng_scalerow) (mng_datap pData);
typedef mng_retcode(*mng_deltarow) (mng_datap pData);
typedef mng_retcode(*mng_promoterow) (mng_datap pData);
typedef mng_retcode(*mng_fliprow) (mng_datap pData);
typedef mng_retcode(*mng_tilerow) (mng_datap pData);
typedef mng_uint8 (*mng_bitdepth_8) (mng_uint8 iB);
typedef mng_uint16 (*mng_bitdepth_16) (mng_uint8 iB);
typedef mng_retcode(*mng_magnify_x) (mng_datap pData,
mng_uint16 iMX,
mng_uint16 iML,
mng_uint16 iMR,
mng_uint32 iWidth,
mng_uint8p iSrcline,
mng_uint8p iDstline);
typedef mng_retcode(*mng_magnify_y) (mng_datap pData,
mng_int32 iM,
mng_int32 iS,
mng_uint32 iWidth,
mng_uint8p iSrcline1,
mng_uint8p iSrcline2,
mng_uint8p iDstline);
/* ************************************************************************** */
/* * * */
/* * Routines for swapping byte-order from and to graphic files * */
/* * (This code is adapted from the libpng package) * */
/* * * */
/* ************************************************************************** */
#ifndef MNG_BIGENDIAN_SUPPORTED
mng_uint32 mng_get_uint32 (mng_uint8p pBuf);
mng_int32 mng_get_int32 (mng_uint8p pBuf);
mng_uint16 mng_get_uint16 (mng_uint8p pBuf);
void mng_put_uint32 (mng_uint8p pBuf,
mng_uint32 i);
void mng_put_int32 (mng_uint8p pBuf,
mng_int32 i);
void mng_put_uint16 (mng_uint8p pBuf,
mng_uint16 i);
#else /* MNG_BIGENDIAN_SUPPORTED */
#define mng_get_uint32(P) *(mng_uint32p)(P)
#define mng_get_int32(P) *(mng_int32p)(P)
#define mng_get_uint16(P) *(mng_uint16p)(P)
#define mng_put_uint32(P,I) *(mng_uint32p)(P) = (I)
#define mng_put_int32(P,I) *(mng_int32p)(P) = (I)
#define mng_put_uint16(P,I) *(mng_uint16p)(P) = (I)
#endif /* MNG_BIGENDIAN_SUPPORTED */
/* ************************************************************************** */
/* * * */
/* * Some handy(?) macro definitions * */
/* * * */
/* ************************************************************************** */
#define MAX_COORD(a, b) (((a) > (b)) ? (a) : (b))
#define MIN_COORD(a, b) (((a) < (b)) ? (a) : (b))
/* ************************************************************************** */
#endif /* _libmng_data_h_ */
/* ************************************************************************** */
/* * end of file * */
/* ************************************************************************** */