libmng_data.h

Linux下的基于X11的图形开发环境。

           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;