📄 libmng_data.h
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/* ************************************************************************** */
/* * For conditions of distribution and use, * */
/* * see copyright notice in libmng.h * */
/* ************************************************************************** */
/* * * */
/* * project : libmng * */
/* * file : libmng_data.h copyright (c) 2000-2004 G.Juyn * */
/* * version : 1.0.8 * */
/* * * */
/* * 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 * */
/* * * */
/* ************************************************************************** */
#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;
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