/* ************************************************************************** */ /* * For conditions of distribution and use, * */ /* * see copyright notice in libmng.h * */ /* ************************************************************************** */ /* * * */ /* * project : libmng * */ /* * file : libmng_data.h copyright (c) 2000 G.Juyn * */ /* * version : 1.0.2 * */ /* * * */ /* * purpose : main data structure definition * */ /* * * */ /* * author : G.Juyn * */ /* * web : http://www.3-t.com * */ /* * email : mailto:info@3-t.com * */ /* * * */ /* * 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 * */ /* * * */ /* ************************************************************************** */ #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 */ 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; 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; /* ************************************************************************** */ /* * * */ /* * 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 an image inside a stream */ mng_uint32 iCanvasstyle; /* tqlayout of the drawing-canvas */ mng_uint32 iBkgdstyle; /* tqlayout 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_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_openstream fOpenstream; mng_closestream fClosestream; 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) mng_bool bPreDraft48; /* flags ancient style draft */ 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 */ mng_bool bEMNGMAhack; /* TODO: to be removed in 1.0.0 !!! */ #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 */ #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 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_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 */ #if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_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 */ 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_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 for *after* next image */ mng_uint8 iSHOWmode; /* SAVE fields */ mng_uint16 iSHOWfromid; mng_uint16 iSHOWtoid; mng_uint16 iSHOWnextid; mng_int16 iSHOWskip; mng_uint32 iGlobalPLTEcount; /* global PLTE fields */ mng_rgbpaltab aGlobalPLTEentries; mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */ mng_uint8arr aGlobalTRNSrawdata; mng_uint32 iGlobalGamma; /* global gAMA fields */ 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; 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; mng_ptr pDeltaImage; /* delta-image fields */ mng_uint8 iDeltaImagetype; mng_uint8 iDeltatype; 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; mng_uint16 iMAGNfromid; mng_uint16 iMAGNtoid; #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 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 */ mng_uint32 aCRCtable [256]; /* CRC prefab table */ mng_bool bCRCcomputed; /* "has been build" indicator */ } 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_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 * */ /* ************************************************************************** */