diff options
Diffstat (limited to 'src/3rdparty/libmng/libmng_chunk_descr.c')
| -rw-r--r-- | src/3rdparty/libmng/libmng_chunk_descr.c | 6090 |
1 files changed, 6090 insertions, 0 deletions
diff --git a/src/3rdparty/libmng/libmng_chunk_descr.c b/src/3rdparty/libmng/libmng_chunk_descr.c new file mode 100644 index 0000000000..e1004a5404 --- /dev/null +++ b/src/3rdparty/libmng/libmng_chunk_descr.c @@ -0,0 +1,6090 @@ +/* ************************************************************************** */ +/* * For conditions of distribution and use, * */ +/* * see copyright notice in libmng.h * */ +/* ************************************************************************** */ +/* * * */ +/* * project : libmng * */ +/* * file : libmng_chunk_descr.c copyright (c) 2005-2007 G.Juyn * */ +/* * version : 1.0.10 * */ +/* * * */ +/* * purpose : Chunk descriptor functions (implementation) * */ +/* * * */ +/* * author : G.Juyn * */ +/* * * */ +/* * comment : implementation of the chunk- anf field-descriptor * */ +/* * routines * */ +/* * * */ +/* * changes : 1.0.9 - 12/06/2004 - G.Juyn * */ +/* * - added conditional MNG_OPTIMIZE_CHUNKREADER * */ +/* * 1.0.9 - 12/11/2004 - G.Juyn * */ +/* * - made all constants 'static' * */ +/* * 1.0.9 - 12/20/2004 - G.Juyn * */ +/* * - cleaned up macro-invocations (thanks to D. Airlie) * */ +/* * 1.0.9 - 01/17/2005 - G.Juyn * */ +/* * - fixed problem with global PLTE/tRNS * */ +/* * * */ +/* * 1.0.10 - 01/17/2005 - G.R-P. * */ +/* * - added typecast to appease the compiler * */ +/* * 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 * */ +/* * * */ +/* ************************************************************************** */ + +#include <stddef.h> /* needed for offsetof() */ + +#include "libmng.h" +#include "libmng_data.h" +#include "libmng_error.h" +#include "libmng_trace.h" +#ifdef __BORLANDC__ +#pragma hdrstop +#endif +#include "libmng_memory.h" +#include "libmng_objects.h" +#include "libmng_chunks.h" +#include "libmng_chunk_descr.h" +#include "libmng_object_prc.h" +#include "libmng_chunk_prc.h" +#include "libmng_chunk_io.h" +#include "libmng_display.h" + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +#include "libmng_pixels.h" +#include "libmng_filter.h" +#endif + +#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) +#pragma option -A /* force ANSI-C */ +#endif + +/* ************************************************************************** */ + +#ifdef MNG_OPTIMIZE_CHUNKREADER +#if defined(MNG_INCLUDE_READ_PROCS) || defined(MNG_INCLUDE_WRITE_PROCS) + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* PNG chunks */ + +MNG_LOCAL mng_field_descriptor mng_fields_ihdr [] = + { + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_NOHIGHBIT, + 1, 0, 4, 4, + offsetof(mng_ihdr, iWidth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_NOHIGHBIT, + 1, 0, 4, 4, + offsetof(mng_ihdr, iHeight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 16, 1, 1, + offsetof(mng_ihdr, iBitdepth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 6, 1, 1, + offsetof(mng_ihdr, iColortype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_ihdr, iCompression), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_ihdr, iFilter), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_ihdr, iInterlace), MNG_NULL, MNG_NULL} + }; + +/* ************************************************************************** */ + +MNG_LOCAL mng_field_descriptor mng_fields_plte [] = + { + {mng_debunk_plte, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; + +/* ************************************************************************** */ + +MNG_LOCAL mng_field_descriptor mng_fields_idat [] = + { + {MNG_NULL, + MNG_NULL, + 0, 0, 0, 0, + offsetof(mng_idat, pData), MNG_NULL, offsetof(mng_idat, iDatasize)} + }; + +/* ************************************************************************** */ + +MNG_LOCAL mng_field_descriptor mng_fields_trns [] = + { + {mng_debunk_trns, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_gAMA +MNG_LOCAL mng_field_descriptor mng_fields_gama [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_gama, iGamma), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_cHRM +MNG_LOCAL mng_field_descriptor mng_fields_chrm [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iWhitepointx), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iWhitepointy), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iRedx), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iRedy), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iGreeny), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iGreeny), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iBluex), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_chrm, iBluey), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_sRGB +MNG_LOCAL mng_field_descriptor mng_fields_srgb [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 4, 1, 1, + offsetof(mng_srgb, iRenderingintent), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_iCCP +MNG_LOCAL mng_field_descriptor mng_fields_iccp [] = + { + {MNG_NULL, + MNG_FIELD_TERMINATOR, + 0, 0, 1, 79, + offsetof(mng_iccp, zName), MNG_NULL, offsetof(mng_iccp, iNamesize)}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_iccp, iCompression), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_DEFLATED, + 0, 0, 0, 0, + offsetof(mng_iccp, pProfile), MNG_NULL, offsetof(mng_iccp, iProfilesize)} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_tEXt +MNG_LOCAL mng_field_descriptor mng_fields_text [] = + { + {MNG_NULL, + MNG_FIELD_TERMINATOR, + 0, 0, 1, 79, + offsetof(mng_text, zKeyword), MNG_NULL, offsetof(mng_text, iKeywordsize)}, + {MNG_NULL, + MNG_NULL, + 0, 0, 0, 0, + offsetof(mng_text, zText), MNG_NULL, offsetof(mng_text, iTextsize)} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_zTXt +MNG_LOCAL mng_field_descriptor mng_fields_ztxt [] = + { + {MNG_NULL, + MNG_FIELD_TERMINATOR, + 0, 0, 1, 79, + offsetof(mng_ztxt, zKeyword), MNG_NULL, offsetof(mng_ztxt, iKeywordsize)}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_ztxt, iCompression), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_DEFLATED, + 0, 0, 0, 0, + offsetof(mng_ztxt, zText), MNG_NULL, offsetof(mng_ztxt, iTextsize)} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_iTXt +MNG_LOCAL mng_field_descriptor mng_fields_itxt [] = + { + {MNG_NULL, + MNG_FIELD_TERMINATOR, + 0, 0, 1, 79, + offsetof(mng_itxt, zKeyword), MNG_NULL, offsetof(mng_itxt, iKeywordsize)}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_itxt, iCompressionflag), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_itxt, iCompressionmethod), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_TERMINATOR, + 0, 0, 0, 0, + offsetof(mng_itxt, zLanguage), MNG_NULL, offsetof(mng_itxt, iLanguagesize)}, + {MNG_NULL, + MNG_FIELD_TERMINATOR, + 0, 0, 0, 0, + offsetof(mng_itxt, zTranslation), MNG_NULL, offsetof(mng_itxt, iTranslationsize)}, + {mng_deflate_itxt, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_bKGD +MNG_LOCAL mng_field_descriptor mng_fields_bkgd [] = + { + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_PUTIMGTYPE, + 0, 0, 0, 0, + offsetof(mng_bkgd, iType), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE3, + 0, 0xFF, 1, 1, + offsetof(mng_bkgd, iIndex), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE0 | MNG_FIELD_IFIMGTYPE4, + 0, 0xFFFF, 2, 2, + offsetof(mng_bkgd, iGray), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE2 | MNG_FIELD_IFIMGTYPE6, + 0, 0xFFFF, 2, 2, + offsetof(mng_bkgd, iRed), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE2 | MNG_FIELD_IFIMGTYPE6, + 0, 0xFFFF, 2, 2, + offsetof(mng_bkgd, iGreen), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE2 | MNG_FIELD_IFIMGTYPE6, + 0, 0xFFFF, 2, 2, + offsetof(mng_bkgd, iBlue), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_pHYs +MNG_LOCAL mng_field_descriptor mng_fields_phys [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_phys, iSizex), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_phys, iSizey), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_phys, iUnit), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_sBIT +MNG_LOCAL mng_field_descriptor mng_fields_sbit [] = + { + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_PUTIMGTYPE, + 0, 0, 0, 0, + offsetof(mng_sbit, iType), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPES, + 0, 0xFF, 1, 1, + offsetof(mng_sbit, aBits[0]), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE2 | MNG_FIELD_IFIMGTYPE3 | MNG_FIELD_IFIMGTYPE4 | MNG_FIELD_IFIMGTYPE6, + 0, 0xFF, 1, 1, + offsetof(mng_sbit, aBits[1]), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE2 | MNG_FIELD_IFIMGTYPE3 | MNG_FIELD_IFIMGTYPE6, + 0, 0xFF, 1, 1, + offsetof(mng_sbit, aBits[2]), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_IFIMGTYPE6, + 0, 0xFF, 1, 1, + offsetof(mng_sbit, aBits[3]), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_sPLT +MNG_LOCAL mng_field_descriptor mng_fields_splt [] = + { + {MNG_NULL, + MNG_NULL, + 0, 0, 1, 79, + offsetof(mng_splt, zName), MNG_NULL, offsetof(mng_splt, iNamesize)}, + {MNG_NULL, + MNG_FIELD_INT, + 8, 16, 1, 1, + offsetof(mng_splt, iSampledepth), MNG_NULL, MNG_NULL}, + {mng_splt_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_hIST +MNG_LOCAL mng_field_descriptor mng_fields_hist [] = + { + {mng_hist_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_tIME +MNG_LOCAL mng_field_descriptor mng_fields_time [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_time, iYear), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 12, 1, 1, + offsetof(mng_time, iMonth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 31, 1, 1, + offsetof(mng_time, iDay), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 24, 1, 1, + offsetof(mng_time, iHour), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 60, 1, 1, + offsetof(mng_time, iMinute), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 60, 1, 1, + offsetof(mng_time, iSecond), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* JNG chunks */ + +#ifdef MNG_INCLUDE_JNG +MNG_LOCAL mng_field_descriptor mng_fields_jhdr [] = + { + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_NOHIGHBIT, + 1, 0, 4, 4, + offsetof(mng_jhdr, iWidth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_NOHIGHBIT, + 1, 0, 4, 4, + offsetof(mng_jhdr, iHeight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 8, 16, 1, 1, + offsetof(mng_jhdr, iColortype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 8, 20, 1, 1, + offsetof(mng_jhdr, iImagesampledepth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 8, 8, 1, 1, + offsetof(mng_jhdr, iImagecompression), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 8, 1, 1, + offsetof(mng_jhdr, iImageinterlace), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 16, 1, 1, + offsetof(mng_jhdr, iAlphasampledepth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 8, 1, 1, + offsetof(mng_jhdr, iAlphacompression), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_jhdr, iAlphafilter), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_jhdr, iAlphainterlace), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +#define mng_fields_jdaa mng_fields_idat +#define mng_fields_jdat mng_fields_idat +#endif + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* MNG chunks */ + +MNG_LOCAL mng_field_descriptor mng_fields_mhdr [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iWidth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iHeight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iTicks), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iLayercount), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iFramecount), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iPlaytime), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_mhdr, iSimplicity), MNG_NULL, MNG_NULL} + }; + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_LOOP +MNG_LOCAL mng_field_descriptor mng_fields_loop [] = + { + {mng_debunk_loop, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_LOOP +MNG_LOCAL mng_field_descriptor mng_fields_endl [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFF, 1, 1, + offsetof(mng_endl, iLevel), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DEFI +MNG_LOCAL mng_field_descriptor mng_fields_defi [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_defi, iObjectid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 0xFF, 1, 1, + offsetof(mng_defi, iDonotshow), offsetof(mng_defi, bHasdonotshow), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 0xFF, 1, 1, + offsetof(mng_defi, iConcrete), offsetof(mng_defi, bHasconcrete), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_defi, iXlocation), offsetof(mng_defi, bHasloca), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_defi, iYlocation), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP2, + 0, 0, 4, 4, + offsetof(mng_defi, iLeftcb), offsetof(mng_defi, bHasclip), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP2, + 0, 0, 4, 4, + offsetof(mng_defi, iRightcb), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP2, + 0, 0, 4, 4, + offsetof(mng_defi, iTopcb), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP2, + 0, 0, 4, 4, + offsetof(mng_defi, iBottomcb), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_BASI +MNG_LOCAL mng_field_descriptor mng_fields_basi [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_basi, iWidth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_basi, iHeight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 16, 1, 1, + offsetof(mng_basi, iBitdepth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 6, 1, 1, + offsetof(mng_basi, iColortype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_basi, iCompression), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_basi, iFilter), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_basi, iInterlace), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0xFFFF, 2, 2, + offsetof(mng_basi, iRed), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0xFFFF, 2, 2, + offsetof(mng_basi, iGreen), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0xFFFF, 2, 2, + offsetof(mng_basi, iBlue), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 0xFFFF, 2, 2, + offsetof(mng_basi, iAlpha), offsetof(mng_basi, bHasalpha), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 1, 1, 1, + offsetof(mng_basi, iViewable), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_CLON +MNG_LOCAL mng_field_descriptor mng_fields_clon [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_clon, iSourceid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_clon, iCloneid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 2, 1, 1, + offsetof(mng_clon, iClonetype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 1, 1, 1, + offsetof(mng_clon, iDonotshow), offsetof(mng_clon, bHasdonotshow), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 1, 1, 1, + offsetof(mng_clon, iConcrete), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 2, 1, 1, + offsetof(mng_clon, iLocationtype), offsetof(mng_clon, bHasloca), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_clon, iLocationx), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_clon, iLocationy), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +MNG_LOCAL mng_field_descriptor mng_fields_past [] = + { + {mng_debunk_past, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DISC +MNG_LOCAL mng_field_descriptor mng_fields_disc [] = + { + {mng_disc_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_BACK +MNG_LOCAL mng_field_descriptor mng_fields_back [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_back, iRed), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_back, iGreen), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_back, iBlue), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 3, 1, 1, + offsetof(mng_back, iMandatory), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 0xFFFF, 2, 2, + offsetof(mng_back, iImageid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 1, 1, 1, + offsetof(mng_back, iTile), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_FRAM +MNG_LOCAL mng_field_descriptor mng_fields_fram [] = + { + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 4, 1, 1, + offsetof(mng_fram, iMode), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_TERMINATOR | MNG_FIELD_OPTIONAL, + 0, 0, 1, 79, + offsetof(mng_fram, zName), MNG_NULL, offsetof(mng_fram, iNamesize)}, + {mng_fram_remainder, + MNG_FIELD_OPTIONAL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MOVE +MNG_LOCAL mng_field_descriptor mng_fields_move [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_move, iFirstid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_move, iLastid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_move, iMovetype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_move, iMovex), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_move, iMovey), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_CLIP +MNG_LOCAL mng_field_descriptor mng_fields_clip [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_clip, iFirstid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_clip, iLastid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_clip, iCliptype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_clip, iClipl), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_clip, iClipr), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_clip, iClipt), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_clip, iClipb), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SHOW +MNG_LOCAL mng_field_descriptor mng_fields_show [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 1, 0xFFFF, 2, 2, + offsetof(mng_show, iFirstid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 1, 0xFFFF, 2, 2, + offsetof(mng_show, iLastid), offsetof(mng_show, bHaslastid), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL, + 0, 7, 1, 1, + offsetof(mng_show, iMode), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_TERM +MNG_LOCAL mng_field_descriptor mng_fields_term [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 3, 1, 1, + offsetof(mng_term, iTermaction), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 2, 1, 1, + offsetof(mng_term, iIteraction), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_term, iDelay), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_term, iItermax), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SAVE +MNG_LOCAL mng_field_descriptor mng_fields_save [] = + { + {mng_save_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SEEK +MNG_LOCAL mng_field_descriptor mng_fields_seek [] = + { + {MNG_NULL, + MNG_NULL, + 0, 0, 1, 79, + offsetof(mng_seek, zName), MNG_NULL, offsetof(mng_seek, iNamesize)} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_eXPI +MNG_LOCAL mng_field_descriptor mng_fields_expi [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_expi, iSnapshotid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_NULL, + 0, 0, 1, 79, + offsetof(mng_expi, zName), MNG_NULL, offsetof(mng_expi, iNamesize)} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_fPRI +MNG_LOCAL mng_field_descriptor mng_fields_fpri [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_fpri, iDeltatype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFF, 1, 1, + offsetof(mng_fpri, iPriority), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_nEED +MNG_LOCAL mng_field_descriptor mng_fields_need [] = + { + {MNG_NULL, + MNG_NULL, + 0, 0, 1, 0, + offsetof(mng_need, zKeywords), MNG_NULL, offsetof(mng_need, iKeywordssize)} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_pHYg +#define mng_fields_phyg mng_fields_phys +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_field_descriptor mng_fields_dhdr [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_dhdr, iObjectid), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 2, 1, 1, + offsetof(mng_dhdr, iImagetype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 7, 1, 1, + offsetof(mng_dhdr, iDeltatype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_dhdr, iBlockwidth), offsetof(mng_dhdr, bHasblocksize), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP1, + 0, 0, 4, 4, + offsetof(mng_dhdr, iBlockheight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP2, + 0, 0, 4, 4, + offsetof(mng_dhdr, iBlockx), offsetof(mng_dhdr, bHasblockloc), MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT | MNG_FIELD_OPTIONAL | MNG_FIELD_GROUP2, + 0, 0, 4, 4, + offsetof(mng_dhdr, iBlocky), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_field_descriptor mng_fields_prom [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 14, 1, 1, + offsetof(mng_prom, iColortype), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 16, 1, 1, + offsetof(mng_prom, iSampledepth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_prom, iFilltype), MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_field_descriptor mng_fields_pplt [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 5, 1, 1, + offsetof(mng_pplt, iDeltatype), MNG_NULL, MNG_NULL}, + {mng_pplt_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_field_descriptor mng_fields_drop [] = + { + {mng_drop_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_DBYK +MNG_LOCAL mng_field_descriptor mng_fields_dbyk [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_dbyk, iChunkname), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_dbyk, iPolarity), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_NULL, + 0, 0, 1, 0, + offsetof(mng_dbyk, zKeywords), MNG_NULL, offsetof(mng_dbyk, iKeywordssize)} + }; +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_ORDR +MNG_LOCAL mng_field_descriptor mng_fields_ordr [] = + { + {mng_drop_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MAGN +MNG_LOCAL mng_field_descriptor mng_fields_magn [] = + { + {mng_debunk_magn, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_MPNG_PROPOSAL +MNG_LOCAL mng_field_descriptor mng_fields_mpng [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 1, 0, 4, 4, + offsetof(mng_mpng, iFramewidth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 0, 4, 4, + offsetof(mng_mpng, iFrameheight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0xFFFF, 2, 2, + offsetof(mng_mpng, iNumplays), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 0xFFFF, 2, 2, + offsetof(mng_mpng, iTickspersec), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 1, 1, + offsetof(mng_mpng, iCompressionmethod), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_DEFLATED, + 0, 0, 1, 0, + offsetof(mng_mpng, pFrames), MNG_NULL, offsetof(mng_mpng, iFramessize)} + }; +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +MNG_LOCAL mng_field_descriptor mng_fields_ahdr [] = + { + {MNG_NULL, + MNG_FIELD_INT, + 1, 0, 4, 4, + offsetof(mng_ahdr, iNumframes), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_ahdr, iTickspersec), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 0, 4, 4, + offsetof(mng_ahdr, iNumplays), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 0, 4, 4, + offsetof(mng_ahdr, iTilewidth), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 1, 0, 4, 4, + offsetof(mng_ahdr, iTileheight), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_ahdr, iInterlace), MNG_NULL, MNG_NULL}, + {MNG_NULL, + MNG_FIELD_INT, + 0, 1, 1, 1, + offsetof(mng_ahdr, iStillused), MNG_NULL, MNG_NULL} + }; + +MNG_LOCAL mng_field_descriptor mng_fields_adat [] = + { + {mng_adat_tiles, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_evNT +MNG_LOCAL mng_field_descriptor mng_fields_evnt [] = + { + {mng_evnt_entries, + MNG_NULL, + 0, 0, 0, 0, + MNG_NULL, MNG_NULL, MNG_NULL} + }; +#endif + +/* ************************************************************************** */ + +MNG_LOCAL mng_field_descriptor mng_fields_unknown [] = + { + {MNG_NULL, + MNG_NULL, + 0, 0, 1, 0, + offsetof(mng_unknown_chunk, pData), MNG_NULL, offsetof(mng_unknown_chunk, iDatasize)} + }; + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* PNG chunks */ + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_ihdr = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_ihdr, + mng_fields_ihdr, (sizeof(mng_fields_ihdr) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL, + MNG_NULL, + MNG_DESCR_NOIHDR | MNG_DESCR_NOJHDR | MNG_DESCR_NOBASI | MNG_DESCR_NOIDAT | MNG_DESCR_NOPLTE}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_plte = + {mng_it_png, mng_create_none, 0, offsetof(mng_plte, bEmpty), + MNG_NULL, MNG_NULL, mng_special_plte, + mng_fields_plte, (sizeof(mng_fields_plte) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_GenHDR, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_idat = + {mng_it_png, mng_create_none, 0, offsetof(mng_idat, bEmpty), + MNG_NULL, MNG_NULL, mng_special_idat, + mng_fields_idat, (sizeof(mng_fields_idat) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTYEMBED, + MNG_DESCR_GenHDR, + MNG_DESCR_NOJSEP}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_iend = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_iend, + MNG_NULL, 0, + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_GenHDR, + MNG_NULL}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_trns = + {mng_it_png, mng_create_none, 0, offsetof(mng_trns, bEmpty), + MNG_NULL, MNG_NULL, mng_special_trns, + mng_fields_trns, (sizeof(mng_fields_trns) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_GenHDR, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; + +#ifndef MNG_SKIPCHUNK_gAMA +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_gama = + {mng_it_png, mng_create_none, 0, offsetof(mng_gama, bEmpty), + MNG_NULL, MNG_NULL, mng_special_gama, + mng_fields_gama, (sizeof(mng_fields_gama) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOPLTE | MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_cHRM +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_chrm = + {mng_it_png, mng_create_none, 0, offsetof(mng_chrm, bEmpty), + MNG_NULL, MNG_NULL, mng_special_chrm, + mng_fields_chrm, (sizeof(mng_fields_chrm) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOPLTE | MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_sRGB +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_srgb = + {mng_it_png, mng_create_none, 0, offsetof(mng_srgb, bEmpty), + MNG_NULL, MNG_NULL, mng_special_srgb, + mng_fields_srgb, (sizeof(mng_fields_srgb) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOPLTE | MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_iCCP +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_iccp = + {mng_it_png, mng_create_none, 0, offsetof(mng_iccp, bEmpty), + MNG_NULL, MNG_NULL, mng_special_iccp, + mng_fields_iccp, (sizeof(mng_fields_iccp) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOPLTE | MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_tEXt +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_text = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_text, + mng_fields_text, (sizeof(mng_fields_text) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL, + MNG_DESCR_GenHDR, + MNG_NULL}; +#endif + +#ifndef MNG_SKIPCHUNK_zTXt +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_ztxt = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_ztxt, + mng_fields_ztxt, (sizeof(mng_fields_ztxt) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL, + MNG_DESCR_GenHDR, + MNG_NULL}; +#endif + +#ifndef MNG_SKIPCHUNK_iTXt +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_itxt = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_itxt, + mng_fields_itxt, (sizeof(mng_fields_itxt) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL, + MNG_DESCR_GenHDR, + MNG_NULL}; +#endif + +#ifndef MNG_SKIPCHUNK_bKGD +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_bkgd = + {mng_it_png, mng_create_none, 0, offsetof(mng_bkgd, bEmpty), + MNG_NULL, MNG_NULL, mng_special_bkgd, + mng_fields_bkgd, (sizeof(mng_fields_bkgd) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_pHYs +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_phys = + {mng_it_png, mng_create_none, 0, offsetof(mng_phys, bEmpty), + MNG_NULL, MNG_NULL, mng_special_phys, + mng_fields_phys, (sizeof(mng_fields_phys) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_sBIT +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_sbit = + {mng_it_png, mng_create_none, 0, offsetof(mng_sbit, bEmpty), + MNG_NULL, MNG_NULL, mng_special_sbit, + mng_fields_sbit, (sizeof(mng_fields_sbit) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_sPLT +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_splt = + {mng_it_png, mng_create_none, 0, offsetof(mng_splt, bEmpty), + MNG_NULL, MNG_NULL, mng_special_splt, + mng_fields_splt, (sizeof(mng_fields_splt) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL | MNG_DESCR_EMPTYEMBED | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_GenHDR, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_hIST +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_hist = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_hist, + mng_fields_hist, (sizeof(mng_fields_hist) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_GenHDR | MNG_DESCR_PLTE, + MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT | MNG_DESCR_NOJDAA}; +#endif + +#ifndef MNG_SKIPCHUNK_tIME +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_time = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_time, + mng_fields_time, (sizeof(mng_fields_time) / sizeof(mng_field_descriptor)), + MNG_DESCR_GLOBAL, + MNG_DESCR_GenHDR, + MNG_NULL}; +#endif + +/* ************************************************************************** */ +/* JNG chunks */ + +#ifdef MNG_INCLUDE_JNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_jhdr = + {mng_it_jng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_jhdr, + mng_fields_jhdr, (sizeof(mng_fields_jhdr) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_NULL, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifdef MNG_INCLUDE_JNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_jdaa = + {mng_it_jng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_jdaa, + mng_fields_jdaa, (sizeof(mng_fields_jdaa) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_JngHDR, + MNG_DESCR_NOJSEP}; +#endif + +#ifdef MNG_INCLUDE_JNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_jdat = + {mng_it_jng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_jdat, + mng_fields_jdat, (sizeof(mng_fields_jdat) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTYEMBED, + MNG_DESCR_JngHDR, + MNG_NULL}; +#endif + +#ifdef MNG_INCLUDE_JNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_jsep = + {mng_it_jng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_jsep, + MNG_NULL, 0, + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_JngHDR, + MNG_DESCR_NOJSEP}; +#endif + +/* ************************************************************************** */ +/* MNG chunks */ + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_mhdr = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_mhdr, + mng_fields_mhdr, (sizeof(mng_fields_mhdr) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_NULL, + MNG_DESCR_NOMHDR | MNG_DESCR_NOIHDR | MNG_DESCR_NOJHDR}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_mend = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_mend, + MNG_NULL, 0, + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_MHDR, + MNG_NULL}; + +#ifndef MNG_SKIPCHUNK_LOOP +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_loop = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_loop, + mng_fields_loop, (sizeof(mng_fields_loop) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_endl = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_endl, + mng_fields_endl, (sizeof(mng_fields_endl) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_DEFI +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_defi = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_defi, + mng_fields_defi, (sizeof(mng_fields_defi) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_BASI +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_basi = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_basi, + mng_fields_basi, (sizeof(mng_fields_basi) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_CLON +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_clon = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_clon, + mng_fields_clon, (sizeof(mng_fields_clon) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_PAST +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_past = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_past, + mng_fields_past, (sizeof(mng_fields_past) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_DISC +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_disc = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_disc, + mng_fields_disc, (sizeof(mng_fields_disc) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_BACK +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_back = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_back, + mng_fields_back, (sizeof(mng_fields_back) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_FRAM +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_fram = + {mng_it_mng, mng_create_none, 0, offsetof(mng_fram, bEmpty), + MNG_NULL, MNG_NULL, mng_special_fram, + mng_fields_fram, (sizeof(mng_fields_fram) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_MOVE +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_move = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_move, + mng_fields_move, (sizeof(mng_fields_move) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_CLIP +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_clip = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_clip, + mng_fields_clip, (sizeof(mng_fields_clip) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_SHOW +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_show = + {mng_it_mng, mng_create_none, 0, offsetof(mng_show, bEmpty), + MNG_NULL, MNG_NULL, mng_special_show, + mng_fields_show, (sizeof(mng_fields_show) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_TERM +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_term = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_term, + mng_fields_term, (sizeof(mng_fields_term) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR | MNG_DESCR_NOTERM | MNG_DESCR_NOLOOP}; +#endif + +#ifndef MNG_SKIPCHUNK_SAVE +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_save = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_save, + mng_fields_save, (sizeof(mng_fields_save) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_MHDR, + MNG_DESCR_NOSAVE | MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_SEEK +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_seek = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_seek, + mng_fields_seek, (sizeof(mng_fields_seek) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYGLOBAL, + MNG_DESCR_MHDR | MNG_DESCR_SAVE, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_eXPI +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_expi = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_expi, + mng_fields_expi, (sizeof(mng_fields_expi) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_fPRI +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_fpri = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_fpri, + mng_fields_fpri, (sizeof(mng_fields_fpri) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_nEED +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_need = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_need, + mng_fields_need, (sizeof(mng_fields_need) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_pHYg +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_phyg = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_phyg, + mng_fields_phyg, (sizeof(mng_fields_phyg) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_dhdr = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_dhdr, + mng_fields_dhdr, (sizeof(mng_fields_dhdr) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_prom = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_prom, + mng_fields_prom, (sizeof(mng_fields_prom) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_ipng = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_ipng, + MNG_NULL, 0, + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_pplt = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_pplt, + mng_fields_pplt, (sizeof(mng_fields_pplt) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif + +#ifndef MNG_NO_DELTA_PNG +#ifdef MNG_INCLUDE_JNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_ijng = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_ijng, + MNG_NULL, 0, + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif +#endif + +#ifndef MNG_NO_DELTA_PNG +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_drop = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_drop, + mng_fields_drop, (sizeof(mng_fields_drop) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_DBYK +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_dbyk = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_dbyk, + mng_fields_dbyk, (sizeof(mng_fields_dbyk) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYEMBED, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif +#endif + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_ORDR +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_ordr = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_ordr, + mng_fields_ordr, (sizeof(mng_fields_ordr) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR | MNG_DESCR_DHDR, + MNG_NULL}; +#endif +#endif + +#ifndef MNG_SKIPCHUNK_MAGN +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_magn = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_magn, + mng_fields_magn, (sizeof(mng_fields_magn) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOIHDR | MNG_DESCR_NOBASI | MNG_DESCR_NODHDR | MNG_DESCR_NOJHDR}; +#endif + +#ifndef MNG_SKIPCHUNK_evNT +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_evnt = + {mng_it_mng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_evnt, + mng_fields_evnt, (sizeof(mng_fields_evnt) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_MHDR, + MNG_DESCR_NOSAVE}; +#endif + +#ifdef MNG_INCLUDE_MPNG_PROPOSAL +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_mpng = + {mng_it_mpng, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_mpng, + mng_fields_mpng, (sizeof(mng_fields_mpng) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_NULL, + MNG_DESCR_NOMHDR | MNG_DESCR_NOIDAT | MNG_DESCR_NOJDAT}; +#endif + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_ahdr = + {mng_it_ang, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_ahdr, + mng_fields_ahdr, (sizeof(mng_fields_ahdr) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_IHDR, + MNG_DESCR_NOMHDR | MNG_DESCR_NOJHDR | MNG_DESCR_NOIDAT}; + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_adat = + {mng_it_ang, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_adat, + mng_fields_adat, (sizeof(mng_fields_adat) / sizeof(mng_field_descriptor)), + MNG_NULL, + MNG_DESCR_IHDR, + MNG_DESCR_NOMHDR | MNG_DESCR_NOJHDR}; +#endif + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* the good ol' unknown babe */ + +MNG_LOCAL mng_chunk_descriptor mng_chunk_descr_unknown = + {mng_it_png, mng_create_none, 0, 0, + MNG_NULL, MNG_NULL, mng_special_unknown, + mng_fields_unknown, (sizeof(mng_fields_unknown) / sizeof(mng_field_descriptor)), + MNG_DESCR_EMPTY | MNG_DESCR_EMPTYEMBED, + MNG_NULL, + MNG_NULL}; + +/* ************************************************************************** */ +/* ************************************************************************** */ + +MNG_LOCAL mng_chunk_header mng_chunk_unknown = + {MNG_UINT_HUH, mng_init_general, mng_free_unknown, + mng_read_general, mng_write_unknown, mng_assign_unknown, + 0, 0, sizeof(mng_unknown_chunk), &mng_chunk_descr_unknown}; + +/* ************************************************************************** */ + + /* the table-idea & binary search code was adapted from + libpng 1.1.0 (pngread.c) */ + /* NOTE1: the table must remain sorted by chunkname, otherwise the binary + search will break !!! (ps. watch upper-/lower-case chunknames !!) */ + /* NOTE2: the layout must remain equal to the header part of all the + chunk-structures (yes, that means even the pNext and pPrev fields; + it's wasting a bit of space, but hey, the code is a lot easier) */ + +MNG_LOCAL mng_chunk_header mng_chunk_table [] = + { +#ifndef MNG_SKIPCHUNK_BACK + {MNG_UINT_BACK, mng_init_general, mng_free_general, mng_read_general, mng_write_back, mng_assign_general, 0, 0, sizeof(mng_back), &mng_chunk_descr_back}, +#endif +#ifndef MNG_SKIPCHUNK_BASI + {MNG_UINT_BASI, mng_init_general, mng_free_general, mng_read_general, mng_write_basi, mng_assign_general, 0, 0, sizeof(mng_basi), &mng_chunk_descr_basi}, +#endif +#ifndef MNG_SKIPCHUNK_CLIP + {MNG_UINT_CLIP, mng_init_general, mng_free_general, mng_read_general, mng_write_clip, mng_assign_general, 0, 0, sizeof(mng_clip), &mng_chunk_descr_clip}, +#endif +#ifndef MNG_SKIPCHUNK_CLON + {MNG_UINT_CLON, mng_init_general, mng_free_general, mng_read_general, mng_write_clon, mng_assign_general, 0, 0, sizeof(mng_clon), &mng_chunk_descr_clon}, +#endif +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_DBYK + {MNG_UINT_DBYK, mng_init_general, mng_free_dbyk, mng_read_general, mng_write_dbyk, mng_assign_dbyk, 0, 0, sizeof(mng_dbyk), &mng_chunk_descr_dbyk}, +#endif +#endif +#ifndef MNG_SKIPCHUNK_DEFI + {MNG_UINT_DEFI, mng_init_general, mng_free_general, mng_read_general, mng_write_defi, mng_assign_general, 0, 0, sizeof(mng_defi), &mng_chunk_descr_defi}, +#endif +#ifndef MNG_NO_DELTA_PNG + {MNG_UINT_DHDR, mng_init_general, mng_free_general, mng_read_general, mng_write_dhdr, mng_assign_general, 0, 0, sizeof(mng_dhdr), &mng_chunk_descr_dhdr}, +#endif +#ifndef MNG_SKIPCHUNK_DISC + {MNG_UINT_DISC, mng_init_general, mng_free_disc, mng_read_general, mng_write_disc, mng_assign_disc, 0, 0, sizeof(mng_disc), &mng_chunk_descr_disc}, +#endif +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_DROP + {MNG_UINT_DROP, mng_init_general, mng_free_drop, mng_read_general, mng_write_drop, mng_assign_drop, 0, 0, sizeof(mng_drop), &mng_chunk_descr_drop}, +#endif +#endif +#ifndef MNG_SKIPCHUNK_LOOP + {MNG_UINT_ENDL, mng_init_general, mng_free_general, mng_read_general, mng_write_endl, mng_assign_general, 0, 0, sizeof(mng_endl), &mng_chunk_descr_endl}, +#endif +#ifndef MNG_SKIPCHUNK_FRAM + {MNG_UINT_FRAM, mng_init_general, mng_free_fram, mng_read_general, mng_write_fram, mng_assign_fram, 0, 0, sizeof(mng_fram), &mng_chunk_descr_fram}, +#endif + {MNG_UINT_IDAT, mng_init_general, mng_free_idat, mng_read_general, mng_write_idat, mng_assign_idat, 0, 0, sizeof(mng_idat), &mng_chunk_descr_idat}, /* 12-th element! */ + {MNG_UINT_IEND, mng_init_general, mng_free_general, mng_read_general, mng_write_iend, mng_assign_general, 0, 0, sizeof(mng_iend), &mng_chunk_descr_iend}, + {MNG_UINT_IHDR, mng_init_general, mng_free_general, mng_read_general, mng_write_ihdr, mng_assign_general, 0, 0, sizeof(mng_ihdr), &mng_chunk_descr_ihdr}, +#ifndef MNG_NO_DELTA_PNG +#ifdef MNG_INCLUDE_JNG + {MNG_UINT_IJNG, mng_init_general, mng_free_general, mng_read_general, mng_write_ijng, mng_assign_general, 0, 0, sizeof(mng_ijng), &mng_chunk_descr_ijng}, +#endif + {MNG_UINT_IPNG, mng_init_general, mng_free_general, mng_read_general, mng_write_ipng, mng_assign_general, 0, 0, sizeof(mng_ipng), &mng_chunk_descr_ipng}, +#endif +#ifdef MNG_INCLUDE_JNG + {MNG_UINT_JDAA, mng_init_general, mng_free_jdaa, mng_read_general, mng_write_jdaa, mng_assign_jdaa, 0, 0, sizeof(mng_jdaa), &mng_chunk_descr_jdaa}, + {MNG_UINT_JDAT, mng_init_general, mng_free_jdat, mng_read_general, mng_write_jdat, mng_assign_jdat, 0, 0, sizeof(mng_jdat), &mng_chunk_descr_jdat}, + {MNG_UINT_JHDR, mng_init_general, mng_free_general, mng_read_general, mng_write_jhdr, mng_assign_general, 0, 0, sizeof(mng_jhdr), &mng_chunk_descr_jhdr}, + {MNG_UINT_JSEP, mng_init_general, mng_free_general, mng_read_general, mng_write_jsep, mng_assign_general, 0, 0, sizeof(mng_jsep), &mng_chunk_descr_jsep}, + {MNG_UINT_JdAA, mng_init_general, mng_free_jdaa, mng_read_general, mng_write_jdaa, mng_assign_jdaa, 0, 0, sizeof(mng_jdaa), &mng_chunk_descr_jdaa}, +#endif +#ifndef MNG_SKIPCHUNK_LOOP + {MNG_UINT_LOOP, mng_init_general, mng_free_loop, mng_read_general, mng_write_loop, mng_assign_loop, 0, 0, sizeof(mng_loop), &mng_chunk_descr_loop}, +#endif +#ifndef MNG_SKIPCHUNK_MAGN + {MNG_UINT_MAGN, mng_init_general, mng_free_general, mng_read_general, mng_write_magn, mng_assign_general, 0, 0, sizeof(mng_magn), &mng_chunk_descr_magn}, +#endif + {MNG_UINT_MEND, mng_init_general, mng_free_general, mng_read_general, mng_write_mend, mng_assign_general, 0, 0, sizeof(mng_mend), &mng_chunk_descr_mend}, + {MNG_UINT_MHDR, mng_init_general, mng_free_general, mng_read_general, mng_write_mhdr, mng_assign_general, 0, 0, sizeof(mng_mhdr), &mng_chunk_descr_mhdr}, +#ifndef MNG_SKIPCHUNK_MOVE + {MNG_UINT_MOVE, mng_init_general, mng_free_general, mng_read_general, mng_write_move, mng_assign_general, 0, 0, sizeof(mng_move), &mng_chunk_descr_move}, +#endif +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_ORDR + {MNG_UINT_ORDR, mng_init_general, mng_free_ordr, mng_read_general, mng_write_ordr, mng_assign_ordr, 0, 0, sizeof(mng_ordr), &mng_chunk_descr_ordr}, +#endif +#endif +#ifndef MNG_SKIPCHUNK_PAST + {MNG_UINT_PAST, mng_init_general, mng_free_past, mng_read_general, mng_write_past, mng_assign_past, 0, 0, sizeof(mng_past), &mng_chunk_descr_past}, +#endif + {MNG_UINT_PLTE, mng_init_general, mng_free_general, mng_read_general, mng_write_plte, mng_assign_general, 0, 0, sizeof(mng_plte), &mng_chunk_descr_plte}, +#ifndef MNG_NO_DELTA_PNG + {MNG_UINT_PPLT, mng_init_general, mng_free_general, mng_read_general, mng_write_pplt, mng_assign_general, 0, 0, sizeof(mng_pplt), &mng_chunk_descr_pplt}, + {MNG_UINT_PROM, mng_init_general, mng_free_general, mng_read_general, mng_write_prom, mng_assign_general, 0, 0, sizeof(mng_prom), &mng_chunk_descr_prom}, +#endif +#ifndef MNG_SKIPCHUNK_SAVE + {MNG_UINT_SAVE, mng_init_general, mng_free_save, mng_read_general, mng_write_save, mng_assign_save, 0, 0, sizeof(mng_save), &mng_chunk_descr_save}, +#endif +#ifndef MNG_SKIPCHUNK_SEEK + {MNG_UINT_SEEK, mng_init_general, mng_free_seek, mng_read_general, mng_write_seek, mng_assign_seek, 0, 0, sizeof(mng_seek), &mng_chunk_descr_seek}, +#endif +#ifndef MNG_SKIPCHUNK_SHOW + {MNG_UINT_SHOW, mng_init_general, mng_free_general, mng_read_general, mng_write_show, mng_assign_general, 0, 0, sizeof(mng_show), &mng_chunk_descr_show}, +#endif +#ifndef MNG_SKIPCHUNK_TERM + {MNG_UINT_TERM, mng_init_general, mng_free_general, mng_read_general, mng_write_term, mng_assign_general, 0, 0, sizeof(mng_term), &mng_chunk_descr_term}, +#endif +#ifdef MNG_INCLUDE_ANG_PROPOSAL + {MNG_UINT_adAT, mng_init_general, mng_free_adat, mng_read_general, mng_write_adat, mng_assign_adat, 0, 0, sizeof(mng_adat), &mng_chunk_descr_adat}, + {MNG_UINT_ahDR, mng_init_general, mng_free_general, mng_read_general, mng_write_ahdr, mng_assign_ahdr, 0, 0, sizeof(mng_ahdr), &mng_chunk_descr_ahdr}, +#endif +#ifndef MNG_SKIPCHUNK_bKGD + {MNG_UINT_bKGD, mng_init_general, mng_free_general, mng_read_general, mng_write_bkgd, mng_assign_general, 0, 0, sizeof(mng_bkgd), &mng_chunk_descr_bkgd}, +#endif +#ifndef MNG_SKIPCHUNK_cHRM + {MNG_UINT_cHRM, mng_init_general, mng_free_general, mng_read_general, mng_write_chrm, mng_assign_general, 0, 0, sizeof(mng_chrm), &mng_chunk_descr_chrm}, +#endif +#ifndef MNG_SKIPCHUNK_eXPI + {MNG_UINT_eXPI, mng_init_general, mng_free_expi, mng_read_general, mng_write_expi, mng_assign_expi, 0, 0, sizeof(mng_expi), &mng_chunk_descr_expi}, +#endif +#ifndef MNG_SKIPCHUNK_evNT + {MNG_UINT_evNT, mng_init_general, mng_free_evnt, mng_read_general, mng_write_evnt, mng_assign_evnt, 0, 0, sizeof(mng_evnt), &mng_chunk_descr_evnt}, +#endif +#ifndef MNG_SKIPCHUNK_fPRI + {MNG_UINT_fPRI, mng_init_general, mng_free_general, mng_read_general, mng_write_fpri, mng_assign_general, 0, 0, sizeof(mng_fpri), &mng_chunk_descr_fpri}, +#endif +#ifndef MNG_SKIPCHUNK_gAMA + {MNG_UINT_gAMA, mng_init_general, mng_free_general, mng_read_general, mng_write_gama, mng_assign_general, 0, 0, sizeof(mng_gama), &mng_chunk_descr_gama}, +#endif +#ifndef MNG_SKIPCHUNK_hIST + {MNG_UINT_hIST, mng_init_general, mng_free_general, mng_read_general, mng_write_hist, mng_assign_general, 0, 0, sizeof(mng_hist), &mng_chunk_descr_hist}, +#endif +#ifndef MNG_SKIPCHUNK_iCCP + {MNG_UINT_iCCP, mng_init_general, mng_free_iccp, mng_read_general, mng_write_iccp, mng_assign_iccp, 0, 0, sizeof(mng_iccp), &mng_chunk_descr_iccp}, +#endif +#ifndef MNG_SKIPCHUNK_iTXt + {MNG_UINT_iTXt, mng_init_general, mng_free_itxt, mng_read_general, mng_write_itxt, mng_assign_itxt, 0, 0, sizeof(mng_itxt), &mng_chunk_descr_itxt}, +#endif +#ifdef MNG_INCLUDE_MPNG_PROPOSAL + {MNG_UINT_mpNG, mng_init_general, mng_free_mpng, mng_read_general, mng_write_mpng, mng_assign_mpng, 0, 0, sizeof(mng_mpng), &mng_chunk_descr_mpng}, +#endif +#ifndef MNG_SKIPCHUNK_nEED + {MNG_UINT_nEED, mng_init_general, mng_free_need, mng_read_general, mng_write_need, mng_assign_need, 0, 0, sizeof(mng_need), &mng_chunk_descr_need}, +#endif +/* TODO: {MNG_UINT_oFFs, 0, 0, 0, 0, 0, 0}, */ +/* TODO: {MNG_UINT_pCAL, 0, 0, 0, 0, 0, 0}, */ +#ifndef MNG_SKIPCHUNK_pHYg + {MNG_UINT_pHYg, mng_init_general, mng_free_general, mng_read_general, mng_write_phyg, mng_assign_general, 0, 0, sizeof(mng_phyg), &mng_chunk_descr_phyg}, +#endif +#ifndef MNG_SKIPCHUNK_pHYs + {MNG_UINT_pHYs, mng_init_general, mng_free_general, mng_read_general, mng_write_phys, mng_assign_general, 0, 0, sizeof(mng_phys), &mng_chunk_descr_phys}, +#endif +#ifndef MNG_SKIPCHUNK_sBIT + {MNG_UINT_sBIT, mng_init_general, mng_free_general, mng_read_general, mng_write_sbit, mng_assign_general, 0, 0, sizeof(mng_sbit), &mng_chunk_descr_sbit}, +#endif +/* TODO: {MNG_UINT_sCAL, 0, 0, 0, 0, 0, 0}, */ +#ifndef MNG_SKIPCHUNK_sPLT + {MNG_UINT_sPLT, mng_init_general, mng_free_splt, mng_read_general, mng_write_splt, mng_assign_splt, 0, 0, sizeof(mng_splt), &mng_chunk_descr_splt}, +#endif + {MNG_UINT_sRGB, mng_init_general, mng_free_general, mng_read_general, mng_write_srgb, mng_assign_general, 0, 0, sizeof(mng_srgb), &mng_chunk_descr_srgb}, +#ifndef MNG_SKIPCHUNK_tEXt + {MNG_UINT_tEXt, mng_init_general, mng_free_text, mng_read_general, mng_write_text, mng_assign_text, 0, 0, sizeof(mng_text), &mng_chunk_descr_text}, +#endif +#ifndef MNG_SKIPCHUNK_tIME + {MNG_UINT_tIME, mng_init_general, mng_free_general, mng_read_general, mng_write_time, mng_assign_general, 0, 0, sizeof(mng_time), &mng_chunk_descr_time}, +#endif + {MNG_UINT_tRNS, mng_init_general, mng_free_general, mng_read_general, mng_write_trns, mng_assign_general, 0, 0, sizeof(mng_trns), &mng_chunk_descr_trns}, +#ifndef MNG_SKIPCHUNK_zTXt + {MNG_UINT_zTXt, mng_init_general, mng_free_ztxt, mng_read_general, mng_write_ztxt, mng_assign_ztxt, 0, 0, sizeof(mng_ztxt), &mng_chunk_descr_ztxt}, +#endif + }; + +/* ************************************************************************** */ +/* ************************************************************************** */ + +void mng_get_chunkheader (mng_chunkid iChunkname, + mng_chunk_headerp pResult) +{ + /* binary search variables */ + mng_int32 iTop, iLower, iUpper, iMiddle; + mng_chunk_headerp pEntry; /* pointer to found entry */ + /* determine max index of table */ + iTop = (sizeof (mng_chunk_table) / sizeof (mng_chunk_table [0])) - 1; + + /* binary search; with 54 chunks, worst-case is 7 comparisons */ + iLower = 0; +#ifndef MNG_NO_DELTA_PNG + iMiddle = 11; /* start with the IDAT entry */ +#else + iMiddle = 8; +#endif + iUpper = iTop; + pEntry = 0; /* no goods yet! */ + + do /* the binary search itself */ + { + if (mng_chunk_table [iMiddle].iChunkname < iChunkname) + iLower = iMiddle + 1; + else if (mng_chunk_table [iMiddle].iChunkname > iChunkname) + iUpper = iMiddle - 1; + else + { + pEntry = &mng_chunk_table [iMiddle]; + break; + } + iMiddle = (iLower + iUpper) >> 1; + } + while (iLower <= iUpper); + + if (!pEntry) /* unknown chunk ? */ + pEntry = &mng_chunk_unknown; /* make it so! */ + + MNG_COPY (pResult, pEntry, sizeof(mng_chunk_header)); + + return; +} + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* PNG chunks */ + +MNG_C_SPECIALFUNC (mng_special_ihdr) +{ + pData->bHasIHDR = MNG_TRUE; /* indicate IHDR is present */ + /* and store interesting fields */ + if ((!pData->bHasDHDR) || (pData->iDeltatype == MNG_DELTATYPE_NOCHANGE)) + { + pData->iDatawidth = ((mng_ihdrp)pChunk)->iWidth; + pData->iDataheight = ((mng_ihdrp)pChunk)->iHeight; + } + + pData->iBitdepth = ((mng_ihdrp)pChunk)->iBitdepth; + pData->iColortype = ((mng_ihdrp)pChunk)->iColortype; + pData->iCompression = ((mng_ihdrp)pChunk)->iCompression; + pData->iFilter = ((mng_ihdrp)pChunk)->iFilter; + pData->iInterlace = ((mng_ihdrp)pChunk)->iInterlace; + +#if defined(MNG_NO_1_2_4BIT_SUPPORT) || defined(MNG_NO_16BIT_SUPPORT) + pData->iPNGmult = 1; + pData->iPNGdepth = pData->iBitdepth; +#endif + +#ifdef MNG_NO_1_2_4BIT_SUPPORT + if (pData->iBitdepth < 8) + pData->iBitdepth = 8; +#endif + +#ifdef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth > 8) + { + pData->iBitdepth = 8; + pData->iPNGmult = 2; + } +#endif + + if ((pData->iBitdepth != 8) /* parameter validity checks */ +#ifndef MNG_NO_1_2_4BIT_SUPPORT + && (pData->iBitdepth != 1) && + (pData->iBitdepth != 2) && + (pData->iBitdepth != 4) +#endif +#ifndef MNG_NO_16BIT_SUPPORT + && (pData->iBitdepth != 16) +#endif + ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if ((pData->iColortype != MNG_COLORTYPE_GRAY ) && + (pData->iColortype != MNG_COLORTYPE_RGB ) && + (pData->iColortype != MNG_COLORTYPE_INDEXED) && + (pData->iColortype != MNG_COLORTYPE_GRAYA ) && + (pData->iColortype != MNG_COLORTYPE_RGBA ) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + + if ((pData->iColortype == MNG_COLORTYPE_INDEXED) && (pData->iBitdepth > 8)) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if (((pData->iColortype == MNG_COLORTYPE_RGB ) || + (pData->iColortype == MNG_COLORTYPE_GRAYA ) || + (pData->iColortype == MNG_COLORTYPE_RGBA ) ) && + (pData->iBitdepth < 8 ) ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if (pData->iCompression != MNG_COMPRESSION_DEFLATE) + MNG_ERROR (pData, MNG_INVALIDCOMPRESS); + +#if defined(FILTER192) || defined(FILTER193) + if ((pData->iFilter != MNG_FILTER_ADAPTIVE ) && +#if defined(FILTER192) && defined(FILTER193) + (pData->iFilter != MNG_FILTER_DIFFERING) && + (pData->iFilter != MNG_FILTER_NOFILTER ) ) +#else +#ifdef FILTER192 + (pData->iFilter != MNG_FILTER_DIFFERING) ) +#else + (pData->iFilter != MNG_FILTER_NOFILTER ) ) +#endif +#endif + MNG_ERROR (pData, MNG_INVALIDFILTER); +#else + if (pData->iFilter) + MNG_ERROR (pData, MNG_INVALIDFILTER); +#endif + + if ((pData->iInterlace != MNG_INTERLACE_NONE ) && + (pData->iInterlace != MNG_INTERLACE_ADAM7) ) + MNG_ERROR (pData, MNG_INVALIDINTERLACE); + +#ifdef MNG_SUPPORT_DISPLAY +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* check the colortype for delta-images ! */ + { + mng_imagedatap pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + + if (pData->iColortype != pBuf->iColortype) + { + if ( ( (pData->iColortype != MNG_COLORTYPE_INDEXED) || + (pBuf->iColortype == MNG_COLORTYPE_GRAY ) ) && + ( (pData->iColortype != MNG_COLORTYPE_GRAY ) || + (pBuf->iColortype == MNG_COLORTYPE_INDEXED) ) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + } + } +#endif +#endif + + if (!pData->bHasheader) /* first chunk ? */ + { + pData->bHasheader = MNG_TRUE; /* we've got a header */ + pData->eImagetype = mng_it_png; /* then this must be a PNG */ + pData->iWidth = pData->iDatawidth; + pData->iHeight = pData->iDataheight; + /* predict alpha-depth ! */ + if ((pData->iColortype == MNG_COLORTYPE_GRAYA ) || + (pData->iColortype == MNG_COLORTYPE_RGBA ) ) + pData->iAlphadepth = pData->iBitdepth; + else + if (pData->iColortype == MNG_COLORTYPE_INDEXED) + pData->iAlphadepth = 8; /* worst case scenario */ + else + pData->iAlphadepth = 1; /* Possible tRNS cheap binary transparency */ + /* fits on maximum canvas ? */ + if ((pData->iWidth > pData->iMaxwidth) || (pData->iHeight > pData->iMaxheight)) + MNG_WARNING (pData, MNG_IMAGETOOLARGE); + +#if !defined(MNG_INCLUDE_MPNG_PROPOSAL) || !defined(MNG_SUPPORT_DISPLAY) + if (pData->fProcessheader) /* inform the app ? */ + if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) + MNG_ERROR (pData, MNG_APPMISCERROR); +#endif + } + + if (!pData->bHasDHDR) + pData->iImagelevel++; /* one level deeper */ + +#ifdef MNG_SUPPORT_DISPLAY + return mng_process_display_ihdr (pData); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} + +/* ************************************************************************** */ + +MNG_F_SPECIALFUNC (mng_debunk_plte) +{ + mng_pltep pPLTE = (mng_pltep)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + /* length must be multiple of 3 */ + if (((iRawlen % 3) != 0) || (iRawlen > 768)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + /* this is the exact length */ + pPLTE->iEntrycount = iRawlen / 3; + + MNG_COPY (pPLTE->aEntries, pRawdata, iRawlen); + + *piRawlen = 0; + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_plte) +{ /* multiple PLTE only inside BASI */ + if ((pData->bHasPLTE) && (!pData->bHasBASI)) + MNG_ERROR (pData, MNG_MULTIPLEERROR); + + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + { /* only allowed for indexed-color or + rgb(a)-color! */ + if ((pData->iColortype != MNG_COLORTYPE_RGB ) && + (pData->iColortype != MNG_COLORTYPE_INDEXED) && + (pData->iColortype != MNG_COLORTYPE_RGBA ) ) + MNG_ERROR (pData, MNG_CHUNKNOTALLOWED); + /* empty only allowed if global present */ + if ((((mng_pltep)pChunk)->bEmpty) && (!pData->bHasglobalPLTE)) + MNG_ERROR (pData, MNG_CANNOTBEEMPTY); + } + else + { + if (((mng_pltep)pChunk)->bEmpty) /* cannot be empty as global! */ + MNG_ERROR (pData, MNG_CANNOTBEEMPTY); + } + + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + pData->bHasPLTE = MNG_TRUE; /* got it! */ + else + pData->bHasglobalPLTE = MNG_TRUE; + + pData->iPLTEcount = ((mng_pltep)pChunk)->iEntrycount; + +#ifdef MNG_SUPPORT_DISPLAY + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + { + mng_imagep pImage; + mng_imagedatap pBuf; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* processing delta-image ? */ + { /* store in object 0 !!! */ + pImage = (mng_imagep)pData->pObjzero; + pBuf = pImage->pImgbuf; + pBuf->bHasPLTE = MNG_TRUE; /* it's definitely got a PLTE now */ + pBuf->iPLTEcount = ((mng_pltep)pChunk)->iEntrycount; + MNG_COPY (pBuf->aPLTEentries, ((mng_pltep)pChunk)->aEntries, + sizeof (pBuf->aPLTEentries)); + } + else +#endif + { /* get the current object */ + pImage = (mng_imagep)pData->pCurrentobj; + if (!pImage) /* no object then dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + + pBuf = pImage->pImgbuf; /* address the object buffer */ + pBuf->bHasPLTE = MNG_TRUE; /* and tell it it's got a PLTE now */ + + if (((mng_pltep)pChunk)->bEmpty) /* if empty, inherit from global */ + { + pBuf->iPLTEcount = pData->iGlobalPLTEcount; + MNG_COPY (pBuf->aPLTEentries, pData->aGlobalPLTEentries, + sizeof (pBuf->aPLTEentries)); + + if (pData->bHasglobalTRNS) /* also copy global tRNS ? */ + { + mng_uint32 iRawlen2 = pData->iGlobalTRNSrawlen; + mng_uint8p pRawdata2 = (mng_uint8p)(pData->aGlobalTRNSrawdata); + /* indicate tRNS available */ + pBuf->bHasTRNS = MNG_TRUE; + /* global length oke ? */ + if ((iRawlen2 == 0) || (iRawlen2 > pBuf->iPLTEcount)) + MNG_ERROR (pData, MNG_GLOBALLENGTHERR); + /* copy it */ + pBuf->iTRNScount = iRawlen2; + MNG_COPY (pBuf->aTRNSentries, pRawdata2, iRawlen2); + } + } + else + { /* store fields for future reference */ + pBuf->iPLTEcount = ((mng_pltep)pChunk)->iEntrycount; + MNG_COPY (pBuf->aPLTEentries, ((mng_pltep)pChunk)->aEntries, + sizeof (pBuf->aPLTEentries)); + } + } + } + else /* store as global */ + { + pData->iGlobalPLTEcount = ((mng_pltep)pChunk)->iEntrycount; + MNG_COPY (pData->aGlobalPLTEentries, ((mng_pltep)pChunk)->aEntries, + sizeof (pData->aGlobalPLTEentries)); + /* create an animation object */ + return mng_create_ani_plte (pData); + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_idat) +{ +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasJHDR) && + (pData->iJHDRalphacompression != MNG_COMPRESSION_DEFLATE)) + MNG_ERROR (pData, MNG_SEQUENCEERROR); +#endif + /* not allowed for deltatype NO_CHANGE */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && ((pData->iDeltatype == MNG_DELTATYPE_NOCHANGE))) + MNG_ERROR (pData, MNG_CHUNKNOTALLOWED); +#endif + /* can only be empty in BASI-block! */ + if ((((mng_idatp)pChunk)->bEmpty) && (!pData->bHasBASI)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + /* indexed-color requires PLTE */ + if ((pData->bHasIHDR) && (pData->iColortype == 3) && (!pData->bHasPLTE)) + MNG_ERROR (pData, MNG_PLTEMISSING); + + pData->bHasIDAT = MNG_TRUE; /* got some IDAT now, don't we */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_iend) +{ /* IHDR-block requires IDAT */ + if ((pData->bHasIHDR) && (!pData->bHasIDAT)) + MNG_ERROR (pData, MNG_IDATMISSING); + + pData->iImagelevel--; /* one level up */ + +#ifdef MNG_SUPPORT_DISPLAY + { /* create an animation object */ + mng_retcode iRetcode = mng_create_ani_image (pData); + if (iRetcode) /* on error bail out */ + return iRetcode; + /* display processing */ + iRetcode = mng_process_display_iend (pData); + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* MNG_SUPPORT_DISPLAY */ + +#ifdef MNG_SUPPORT_DISPLAY + if (!pData->bTimerset) /* reset only if not broken !!! */ + { +#endif + /* IEND signals the end for most ... */ + 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; +#ifdef MNG_SUPPORT_DISPLAY + } +#endif + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +MNG_F_SPECIALFUNC (mng_debunk_trns) +{ + mng_trnsp pTRNS = (mng_trnsp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + { /* not global! */ + pTRNS->bGlobal = MNG_FALSE; + pTRNS->iType = pData->iColortype; + + if (iRawlen != 0) + { + switch (pData->iColortype) /* store fields */ + { + case 0: { /* gray */ + if (iRawlen != 2) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + pTRNS->iGray = mng_get_uint16 (pRawdata); + break; + } + case 2: { /* rgb */ + if (iRawlen != 6) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + pTRNS->iRed = mng_get_uint16 (pRawdata); + pTRNS->iGreen = mng_get_uint16 (pRawdata+2); + pTRNS->iBlue = mng_get_uint16 (pRawdata+4); + break; + } + case 3: { /* indexed */ + if (iRawlen > 256) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + pTRNS->iCount = iRawlen; + MNG_COPY (pTRNS->aEntries, pRawdata, iRawlen); + break; + } + } + } + } + else /* it's global! */ + { + if (iRawlen == 0) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + pTRNS->bGlobal = MNG_TRUE; + pTRNS->iType = 0; + pTRNS->iRawlen = iRawlen; + MNG_COPY (pTRNS->aRawdata, pRawdata, iRawlen); + + pData->iGlobalTRNSrawlen = iRawlen; + MNG_COPY (pData->aGlobalTRNSrawdata, pRawdata, iRawlen); + } + + *piRawlen = 0; + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_trns) +{ /* multiple tRNS only inside BASI */ + if ((pData->bHasTRNS) && (!pData->bHasBASI)) + MNG_ERROR (pData, MNG_MULTIPLEERROR); + + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + { /* not allowed with full alpha-channel */ + if ((pData->iColortype == 4) || (pData->iColortype == 6)) + MNG_ERROR (pData, MNG_CHUNKNOTALLOWED); + + if (!((mng_trnsp)pChunk)->bEmpty) /* filled ? */ + { +#ifdef MNG_SUPPORT_DISPLAY + if (pData->iColortype == 3) + { + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + mng_imagedatap pBuf; + + if (!pImage) /* no object then check obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + + pBuf = pImage->pImgbuf; /* address object buffer */ + + if (((mng_trnsp)pChunk)->iCount > pBuf->iPLTEcount) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + } +#endif + } + else /* if empty there must be global stuff! */ + { + if (!pData->bHasglobalTRNS) + MNG_ERROR (pData, MNG_CANNOTBEEMPTY); + } + } + + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + pData->bHasTRNS = MNG_TRUE; /* indicate tRNS available */ + else + pData->bHasglobalTRNS = MNG_TRUE; + +#ifdef MNG_SUPPORT_DISPLAY + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + { + mng_imagep pImage; + mng_imagedatap pBuf; + mng_uint8p pRawdata2; + mng_uint32 iRawlen2; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* processing delta-image ? */ + { /* store in object 0 !!! */ +#if defined(MNG_NO_1_2_4BIT_SUPPORT) + mng_uint8 multiplier[]={0,255,85,0,17,0,0,0,1,0,0,0,0,0,0,0,1}; +#endif + pImage = (mng_imagep)pData->pObjzero; + pBuf = pImage->pImgbuf; /* address object buffer */ + pBuf->bHasTRNS = MNG_TRUE; /* tell it it's got a tRNS now */ + pBuf->iTRNSgray = 0; + pBuf->iTRNSred = 0; + pBuf->iTRNSgreen = 0; + pBuf->iTRNSblue = 0; + pBuf->iTRNScount = 0; + + switch (pData->iColortype) /* store fields for future reference */ + { + case 0: { /* gray */ + pBuf->iTRNSgray = ((mng_trnsp)pChunk)->iGray; +#if defined(MNG_NO_1_2_4BIT_SUPPORT) + pBuf->iTRNSgray *= multiplier[pData->iPNGdepth]; +#endif +#if defined(MNG_NO_16BIT_SUPPORT) + if (pData->iPNGmult == 2) + pBuf->iTRNSgray >>= 8; +#endif + break; + } + case 2: { /* rgb */ + pBuf->iTRNSred = ((mng_trnsp)pChunk)->iRed; + pBuf->iTRNSgreen = ((mng_trnsp)pChunk)->iGreen; + pBuf->iTRNSblue = ((mng_trnsp)pChunk)->iBlue; +#if defined(MNG_NO_16BIT_SUPPORT) + if (pData->iPNGmult == 2) + { + pBuf->iTRNSred >>= 8; + pBuf->iTRNSgreen >>= 8; + pBuf->iTRNSblue >>= 8; + } +#endif + break; + } + case 3: { /* indexed */ + pBuf->iTRNScount = ((mng_trnsp)pChunk)->iCount; + MNG_COPY (pBuf->aTRNSentries, + ((mng_trnsp)pChunk)->aEntries, + ((mng_trnsp)pChunk)->iCount); + break; + } + } + } + else +#endif + { /* address current object */ + pImage = (mng_imagep)pData->pCurrentobj; + + if (!pImage) /* no object then dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + + pBuf = pImage->pImgbuf; /* address object buffer */ + pBuf->bHasTRNS = MNG_TRUE; /* and tell it it's got a tRNS now */ + pBuf->iTRNSgray = 0; + pBuf->iTRNSred = 0; + pBuf->iTRNSgreen = 0; + pBuf->iTRNSblue = 0; + pBuf->iTRNScount = 0; + + if (((mng_trnsp)pChunk)->bEmpty) /* if empty, inherit from global */ + { + iRawlen2 = pData->iGlobalTRNSrawlen; + pRawdata2 = (mng_ptr)(pData->aGlobalTRNSrawdata); + /* global length oke ? */ + if ((pData->iColortype == 0) && (iRawlen2 != 2)) + MNG_ERROR (pData, MNG_GLOBALLENGTHERR); + + if ((pData->iColortype == 2) && (iRawlen2 != 6)) + MNG_ERROR (pData, MNG_GLOBALLENGTHERR); + + if ((pData->iColortype == 3) && ((iRawlen2 == 0) || (iRawlen2 > pBuf->iPLTEcount))) + MNG_ERROR (pData, MNG_GLOBALLENGTHERR); + + switch (pData->iColortype) /* store fields for future reference */ + { + case 0: { /* gray */ + pBuf->iTRNSgray = mng_get_uint16 (pRawdata2); +#if defined(MNG_NO_16BIT_SUPPORT) + if (pData->iPNGmult == 2) + pBuf->iTRNSgray >>= 8; +#endif + break; + } + case 2: { /* rgb */ + pBuf->iTRNSred = mng_get_uint16 (pRawdata2); + pBuf->iTRNSgreen = mng_get_uint16 (pRawdata2+2); + pBuf->iTRNSblue = mng_get_uint16 (pRawdata2+4); +#if defined(MNG_NO_16BIT_SUPPORT) + if (pData->iPNGmult == 2) + { + pBuf->iTRNSred >>= 8; + pBuf->iTRNSgreen >>= 8; + pBuf->iTRNSblue >>= 8; + } +#endif + break; + } + case 3: { /* indexed */ + pBuf->iTRNScount = iRawlen2; + MNG_COPY (pBuf->aTRNSentries, pRawdata2, iRawlen2); + break; + } + } + } + else + { + switch (pData->iColortype) /* store fields for future reference */ + { + case 0: { /* gray */ + pBuf->iTRNSgray = ((mng_trnsp)pChunk)->iGray; +#if defined(MNG_NO_16BIT_SUPPORT) + if (pData->iPNGmult == 2) + pBuf->iTRNSgray >>= 8; +#endif + break; + } + case 2: { /* rgb */ + pBuf->iTRNSred = ((mng_trnsp)pChunk)->iRed; + pBuf->iTRNSgreen = ((mng_trnsp)pChunk)->iGreen; + pBuf->iTRNSblue = ((mng_trnsp)pChunk)->iBlue; +#if defined(MNG_NO_16BIT_SUPPORT) + if (pData->iPNGmult == 2) + { + pBuf->iTRNSred >>= 8; + pBuf->iTRNSgreen >>= 8; + pBuf->iTRNSblue >>= 8; + } +#endif + break; + } + case 3: { /* indexed */ + pBuf->iTRNScount = ((mng_trnsp)pChunk)->iCount; + MNG_COPY (pBuf->aTRNSentries, + ((mng_trnsp)pChunk)->aEntries, + ((mng_trnsp)pChunk)->iCount); + break; + } + } + } + } + } + else + { /* create an animation object */ + return mng_create_ani_trns (pData); + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_gama) +{ +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + pData->bHasGAMA = MNG_TRUE; /* indicate we've got it */ + else + pData->bHasglobalGAMA = (mng_bool)!((mng_gamap)pChunk)->bEmpty; + +#ifdef MNG_SUPPORT_DISPLAY +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + { + mng_imagep pImage; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* update delta image ? */ + pImage = (mng_imagep)pData->pObjzero; + else +#endif + { + pImage = (mng_imagep)pData->pCurrentobj; + if (!pImage) /* no object then dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + } + /* store for color-processing routines */ + pImage->pImgbuf->iGamma = ((mng_gamap)pChunk)->iGamma; + pImage->pImgbuf->bHasGAMA = MNG_TRUE; + } + else + { /* store as global */ + if (!((mng_gamap)pChunk)->bEmpty) + pData->iGlobalGamma = ((mng_gamap)pChunk)->iGamma; + /* create an animation object */ + return mng_create_ani_gama (pData, pChunk); + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_cHRM +MNG_C_SPECIALFUNC (mng_special_chrm) +{ +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + pData->bHasCHRM = MNG_TRUE; /* indicate we've got it */ + else + pData->bHasglobalCHRM = (mng_bool)!((mng_chrmp)pChunk)->bEmpty; + +#ifdef MNG_SUPPORT_DISPLAY + { +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + { + mng_imagep pImage; + mng_imagedatap pBuf; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* update delta image ? */ + pImage = (mng_imagep)pData->pObjzero; + else +#endif + { + pImage = (mng_imagep)pData->pCurrentobj; + if (!pImage) /* no object then dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + } + + pBuf = pImage->pImgbuf; /* address object buffer */ + pBuf->bHasCHRM = MNG_TRUE; /* and tell it it's got a CHRM now */ + /* store for color-processing routines */ + pBuf->iWhitepointx = ((mng_chrmp)pChunk)->iWhitepointx; + pBuf->iWhitepointy = ((mng_chrmp)pChunk)->iWhitepointy; + pBuf->iPrimaryredx = ((mng_chrmp)pChunk)->iRedx; + pBuf->iPrimaryredy = ((mng_chrmp)pChunk)->iRedy; + pBuf->iPrimarygreenx = ((mng_chrmp)pChunk)->iGreenx; + pBuf->iPrimarygreeny = ((mng_chrmp)pChunk)->iGreeny; + pBuf->iPrimarybluex = ((mng_chrmp)pChunk)->iBluex; + pBuf->iPrimarybluey = ((mng_chrmp)pChunk)->iBluey; + } + else + { /* store as global */ + if (!((mng_chrmp)pChunk)->bEmpty) + { + pData->iGlobalWhitepointx = ((mng_chrmp)pChunk)->iWhitepointx; + pData->iGlobalWhitepointy = ((mng_chrmp)pChunk)->iWhitepointy; + pData->iGlobalPrimaryredx = ((mng_chrmp)pChunk)->iRedx; + pData->iGlobalPrimaryredy = ((mng_chrmp)pChunk)->iRedy; + pData->iGlobalPrimarygreenx = ((mng_chrmp)pChunk)->iGreenx; + pData->iGlobalPrimarygreeny = ((mng_chrmp)pChunk)->iGreeny; + pData->iGlobalPrimarybluex = ((mng_chrmp)pChunk)->iBluex; + pData->iGlobalPrimarybluey = ((mng_chrmp)pChunk)->iBluey; + } + /* create an animation object */ + return mng_create_ani_chrm (pData, pChunk); + } + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_srgb) +{ +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + pData->bHasSRGB = MNG_TRUE; /* indicate we've got it */ + else + pData->bHasglobalSRGB = (mng_bool)!((mng_srgbp)pChunk)->bEmpty; + +#ifdef MNG_SUPPORT_DISPLAY +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + { + mng_imagep pImage; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* update delta image ? */ + pImage = (mng_imagep)pData->pObjzero; + else +#endif + { + pImage = (mng_imagep)pData->pCurrentobj; + if (!pImage) /* no object then dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + } + /* store for color-processing routines */ + pImage->pImgbuf->iRenderingintent = ((mng_srgbp)pChunk)->iRenderingintent; + pImage->pImgbuf->bHasSRGB = MNG_TRUE; + } + else + { /* store as global */ + if (!((mng_srgbp)pChunk)->bEmpty) + pData->iGlobalRendintent = ((mng_srgbp)pChunk)->iRenderingintent; + /* create an animation object */ + return mng_create_ani_srgb (pData, pChunk); + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_iCCP +MNG_C_SPECIALFUNC (mng_special_iccp) +{ + mng_retcode iRetcode; + mng_chunk_headerp pDummy; + +#ifdef MNG_CHECK_BAD_ICCP /* Check for bad iCCP chunk */ + if (!strncmp (((mng_iccpp)pChunk)->zName, "Photoshop ICC profile", 21)) + { + if (((mng_iccpp)pChunk)->iProfilesize == 2615) /* is it the sRGB profile ? */ + { + mng_chunk_header chunk_srgb; + mng_get_chunkheader (MNG_UINT_sRGB, &chunk_srgb); + /* pretend it's an sRGB chunk then ! */ + iRetcode = mng_read_general (pData, &chunk_srgb, 1, (mng_ptr)"0", &pDummy); + if (iRetcode) /* on error bail out */ + return iRetcode; + + pDummy->fCleanup (pData, pDummy); + } + } + else + { +#endif /* MNG_CHECK_BAD_ICCP */ + +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + pData->bHasICCP = MNG_TRUE; /* indicate we've got it */ + else + pData->bHasglobalICCP = (mng_bool)!((mng_iccpp)pChunk)->bEmpty; + +#ifdef MNG_SUPPORT_DISPLAY +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + { + mng_imagep pImage; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* update delta image ? */ + { /* store in object 0 ! */ + pImage = (mng_imagep)pData->pObjzero; + + if (pImage->pImgbuf->pProfile) /* profile existed ? */ + MNG_FREEX (pData, pImage->pImgbuf->pProfile, pImage->pImgbuf->iProfilesize); + /* allocate a buffer & copy it */ + MNG_ALLOC (pData, pImage->pImgbuf->pProfile, ((mng_iccpp)pChunk)->iProfilesize); + MNG_COPY (pImage->pImgbuf->pProfile, ((mng_iccpp)pChunk)->pProfile, ((mng_iccpp)pChunk)->iProfilesize); + /* store its length as well */ + pImage->pImgbuf->iProfilesize = ((mng_iccpp)pChunk)->iProfilesize; + pImage->pImgbuf->bHasICCP = MNG_TRUE; + } + else +#endif + { + pImage = (mng_imagep)pData->pCurrentobj; + + if (!pImage) /* no object then dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + + if (pImage->pImgbuf->pProfile) /* profile existed ? */ + MNG_FREEX (pData, pImage->pImgbuf->pProfile, pImage->pImgbuf->iProfilesize); + /* allocate a buffer & copy it */ + MNG_ALLOC (pData, pImage->pImgbuf->pProfile, ((mng_iccpp)pChunk)->iProfilesize); + MNG_COPY (pImage->pImgbuf->pProfile, ((mng_iccpp)pChunk)->pProfile, ((mng_iccpp)pChunk)->iProfilesize); + /* store its length as well */ + pImage->pImgbuf->iProfilesize = ((mng_iccpp)pChunk)->iProfilesize; + pImage->pImgbuf->bHasICCP = MNG_TRUE; + } + } + else + { /* store as global */ + if (pData->pGlobalProfile) /* did we have a global profile ? */ + MNG_FREEX (pData, pData->pGlobalProfile, pData->iGlobalProfilesize); + + if (((mng_iccpp)pChunk)->bEmpty) /* empty chunk ? */ + { + pData->iGlobalProfilesize = 0; /* reset to null */ + pData->pGlobalProfile = MNG_NULL; + } + else + { /* allocate a global buffer & copy it */ + MNG_ALLOC (pData, pData->pGlobalProfile, ((mng_iccpp)pChunk)->iProfilesize); + MNG_COPY (pData->pGlobalProfile, ((mng_iccpp)pChunk)->pProfile, ((mng_iccpp)pChunk)->iProfilesize); + /* store its length as well */ + pData->iGlobalProfilesize = ((mng_iccpp)pChunk)->iProfilesize; + } + /* create an animation object */ + return mng_create_ani_iccp (pData, pChunk); + } +#endif /* MNG_SUPPORT_DISPLAY */ + +#ifdef MNG_CHECK_BAD_ICCP + } +#endif + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_tEXt +MNG_C_SPECIALFUNC (mng_special_text) +{ + if (pData->fProcesstext) /* inform the application ? */ + { + mng_bool bOke = pData->fProcesstext ((mng_handle)pData, MNG_TYPE_TEXT, + ((mng_textp)pChunk)->zKeyword, + ((mng_textp)pChunk)->zText, 0, 0); + if (!bOke) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_zTXt +MNG_C_SPECIALFUNC (mng_special_ztxt) +{ + if (pData->fProcesstext) /* inform the application ? */ + { + mng_bool bOke = pData->fProcesstext ((mng_handle)pData, MNG_TYPE_ZTXT, + ((mng_ztxtp)pChunk)->zKeyword, + ((mng_ztxtp)pChunk)->zText, 0, 0); + if (!bOke) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_iTXt +MNG_F_SPECIALFUNC (mng_deflate_itxt) +{ + mng_itxtp pITXT = (mng_itxtp)pChunk; + mng_uint32 iBufsize = 0; + mng_uint8p pBuf = 0; + mng_uint32 iTextlen = 0; + + if (pITXT->iCompressionflag) /* decompress the text ? */ + { + mng_retcode iRetcode = mng_inflate_buffer (pData, *ppRawdata, *piRawlen, + &pBuf, &iBufsize, &iTextlen); + + if (iRetcode) /* on error bail out */ + { /* don't forget to drop the temp buffer */ + MNG_FREEX (pData, pBuf, iBufsize); + return iRetcode; + } + + MNG_ALLOC (pData, pITXT->zText, iTextlen+1); + MNG_COPY (pITXT->zText, pBuf, iTextlen); + + pITXT->iTextsize = iTextlen; + + MNG_FREEX (pData, pBuf, iBufsize); + + } else { + + MNG_ALLOC (pData, pITXT->zText, (*piRawlen)+1); + MNG_COPY (pITXT->zText, *ppRawdata, *piRawlen); + + pITXT->iTextsize = *piRawlen; + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_iTXt +MNG_C_SPECIALFUNC (mng_special_itxt) +{ + if (pData->fProcesstext) /* inform the application ? */ + { + mng_bool bOke = pData->fProcesstext ((mng_handle)pData, MNG_TYPE_ITXT, + ((mng_itxtp)pChunk)->zKeyword, + ((mng_itxtp)pChunk)->zText, + ((mng_itxtp)pChunk)->zLanguage, + ((mng_itxtp)pChunk)->zTranslation); + if (!bOke) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_bKGD +MNG_C_SPECIALFUNC (mng_special_bkgd) +{ +#ifdef MNG_SUPPORT_DISPLAY + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + mng_imagedatap pBuf; +#endif + +#ifdef MNG_INCLUDE_JNG + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) +#else + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) +#endif + pData->bHasBKGD = MNG_TRUE; /* indicate bKGD available */ + else + pData->bHasglobalBKGD = (mng_bool)!(((mng_bkgdp)pChunk)->bEmpty); + +#ifdef MNG_SUPPORT_DISPLAY + if (!pImage) /* if no object dump it in obj 0 */ + pImage = (mng_imagep)pData->pObjzero; + pBuf = pImage->pImgbuf; /* address object buffer */ + +#ifdef MNG_INCLUDE_JNG + if (pData->bHasJHDR) + { + pBuf->bHasBKGD = MNG_TRUE; /* tell the object it's got bKGD now */ + + switch (pData->iJHDRcolortype) /* store fields for future reference */ + { + case 8 : ; /* gray */ + case 12 : { /* graya */ + pBuf->iBKGDgray = ((mng_bkgdp)pChunk)->iGray; + break; + } + case 10 : ; /* rgb */ + case 14 : { /* rgba */ + pBuf->iBKGDred = ((mng_bkgdp)pChunk)->iRed; + pBuf->iBKGDgreen = ((mng_bkgdp)pChunk)->iGreen; + pBuf->iBKGDblue = ((mng_bkgdp)pChunk)->iBlue; + break; + } + } + } + else +#endif /* MNG_INCLUDE_JNG */ + if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) + { + pBuf->bHasBKGD = MNG_TRUE; /* tell the object it's got bKGD now */ + + switch (pData->iColortype) /* store fields for future reference */ + { + case 0 : ; /* gray */ + case 4 : { /* graya */ + pBuf->iBKGDgray = ((mng_bkgdp)pChunk)->iGray; + break; + } + case 2 : ; /* rgb */ + case 6 : { /* rgba */ + pBuf->iBKGDred = ((mng_bkgdp)pChunk)->iRed; + pBuf->iBKGDgreen = ((mng_bkgdp)pChunk)->iGreen; + pBuf->iBKGDblue = ((mng_bkgdp)pChunk)->iBlue; + break; + } + case 3 : { /* indexed */ + pBuf->iBKGDindex = ((mng_bkgdp)pChunk)->iIndex; + break; + } + } + } + else /* store as global */ + { + if (!(((mng_bkgdp)pChunk)->bEmpty)) + { + pData->iGlobalBKGDred = ((mng_bkgdp)pChunk)->iRed; + pData->iGlobalBKGDgreen = ((mng_bkgdp)pChunk)->iGreen; + pData->iGlobalBKGDblue = ((mng_bkgdp)pChunk)->iBlue; + } + /* create an animation object */ + return mng_create_ani_bkgd (pData); + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_pHYs +MNG_C_SPECIALFUNC (mng_special_phys) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_sBIT +MNG_C_SPECIALFUNC (mng_special_sbit) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_sPLT +MNG_F_SPECIALFUNC (mng_splt_entries) +{ + mng_spltp pSPLT = (mng_spltp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + + if ((pSPLT->iSampledepth != MNG_BITDEPTH_8 ) && + (pSPLT->iSampledepth != MNG_BITDEPTH_16) ) + MNG_ERROR (pData, MNG_INVSAMPLEDEPTH); + /* check remaining length */ + if ( ((pSPLT->iSampledepth == MNG_BITDEPTH_8 ) && (iRawlen % 6 != 0)) || + ((pSPLT->iSampledepth == MNG_BITDEPTH_16) && (iRawlen % 10 != 0)) ) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + if (pSPLT->iSampledepth == MNG_BITDEPTH_8) + pSPLT->iEntrycount = iRawlen / 6; + else + pSPLT->iEntrycount = iRawlen / 10; + + if (iRawlen) + { + MNG_ALLOC (pData, pSPLT->pEntries, iRawlen); + MNG_COPY (pSPLT->pEntries, pRawdata, iRawlen); + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_sPLT +MNG_C_SPECIALFUNC (mng_special_splt) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_hIST +MNG_F_SPECIALFUNC (mng_hist_entries) +{ + mng_histp pHIST = (mng_histp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_uint32 iX; + + if ( ((iRawlen & 0x01) != 0) || ((iRawlen >> 1) != pData->iPLTEcount) ) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + pHIST->iEntrycount = iRawlen >> 1; + + for (iX = 0; iX < pHIST->iEntrycount; iX++) + { + pHIST->aEntries[iX] = mng_get_uint16 (pRawdata); + pRawdata += 2; + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_hIST +MNG_C_SPECIALFUNC (mng_special_hist) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_tIME +MNG_C_SPECIALFUNC (mng_special_time) +{ +/* if (pData->fProcesstime) */ /* inform the application ? */ +/* { + + pData->fProcesstime ((mng_handle)pData, ); + } */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* JNG chunks */ + +#ifdef MNG_INCLUDE_JNG +MNG_C_SPECIALFUNC (mng_special_jhdr) +{ + if ((pData->eSigtype == mng_it_jng) && (pData->iChunkseq > 1)) + MNG_ERROR (pData, MNG_SEQUENCEERROR); + /* inside a JHDR-IEND block now */ + pData->bHasJHDR = MNG_TRUE; + /* and store interesting fields */ + pData->iDatawidth = ((mng_jhdrp)pChunk)->iWidth; + pData->iDataheight = ((mng_jhdrp)pChunk)->iHeight; + pData->iJHDRcolortype = ((mng_jhdrp)pChunk)->iColortype; + pData->iJHDRimgbitdepth = ((mng_jhdrp)pChunk)->iImagesampledepth; + pData->iJHDRimgcompression = ((mng_jhdrp)pChunk)->iImagecompression; + pData->iJHDRimginterlace = ((mng_jhdrp)pChunk)->iImageinterlace; + pData->iJHDRalphabitdepth = ((mng_jhdrp)pChunk)->iAlphasampledepth; + pData->iJHDRalphacompression = ((mng_jhdrp)pChunk)->iAlphacompression; + pData->iJHDRalphafilter = ((mng_jhdrp)pChunk)->iAlphafilter; + pData->iJHDRalphainterlace = ((mng_jhdrp)pChunk)->iAlphainterlace; + +#if defined(MNG_NO_1_2_4BIT_SUPPORT) || defined(MNG_NO_16BIT_SUPPORT) + pData->iPNGmult = 1; + pData->iPNGdepth = pData->iJHDRalphabitdepth; +#endif + +#ifdef MNG_NO_1_2_4BIT_SUPPORT + if (pData->iJHDRalphabitdepth < 8) + pData->iJHDRalphabitdepth = 8; +#endif + +#ifdef MNG_NO_16BIT_SUPPORT + if (pData->iJHDRalphabitdepth > 8) + { + pData->iPNGmult = 2; + pData->iJHDRalphabitdepth = 8; + } +#endif + /* parameter validity checks */ + if ((pData->iJHDRcolortype != MNG_COLORTYPE_JPEGGRAY ) && + (pData->iJHDRcolortype != MNG_COLORTYPE_JPEGCOLOR ) && + (pData->iJHDRcolortype != MNG_COLORTYPE_JPEGGRAYA ) && + (pData->iJHDRcolortype != MNG_COLORTYPE_JPEGCOLORA) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + + if ((pData->iJHDRimgbitdepth != MNG_BITDEPTH_JPEG8 ) && + (pData->iJHDRimgbitdepth != MNG_BITDEPTH_JPEG12 ) && + (pData->iJHDRimgbitdepth != MNG_BITDEPTH_JPEG8AND12) ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) + { + if ((pData->iJHDRalphabitdepth != MNG_BITDEPTH_8 ) +#ifndef MNG_NO_1_2_4BIT_SUPPORT + && (pData->iJHDRalphabitdepth != MNG_BITDEPTH_1 ) && + (pData->iJHDRalphabitdepth != MNG_BITDEPTH_2 ) && + (pData->iJHDRalphabitdepth != MNG_BITDEPTH_4 ) +#endif +#ifndef MNG_NO_16BIT_SUPPORT + && (pData->iJHDRalphabitdepth != MNG_BITDEPTH_16) +#endif + ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if ((pData->iJHDRalphacompression != MNG_COMPRESSION_DEFLATE ) && + (pData->iJHDRalphacompression != MNG_COMPRESSION_BASELINEJPEG) ) + MNG_ERROR (pData, MNG_INVALIDCOMPRESS); + + if ((pData->iJHDRalphacompression == MNG_COMPRESSION_BASELINEJPEG) && + (pData->iJHDRalphabitdepth != MNG_BITDEPTH_8 ) ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + +#if defined(FILTER192) || defined(FILTER193) + if ((pData->iJHDRalphafilter != MNG_FILTER_ADAPTIVE ) && +#if defined(FILTER192) && defined(FILTER193) + (pData->iJHDRalphafilter != MNG_FILTER_DIFFERING) && + (pData->iJHDRalphafilter != MNG_FILTER_NOFILTER ) ) +#else +#ifdef FILTER192 + (pData->iJHDRalphafilter != MNG_FILTER_DIFFERING) ) +#else + (pData->iJHDRalphafilter != MNG_FILTER_NOFILTER ) ) +#endif +#endif + MNG_ERROR (pData, MNG_INVALIDFILTER); +#else + if (pData->iJHDRalphafilter) + MNG_ERROR (pData, MNG_INVALIDFILTER); +#endif + + } + else + { + if (pData->iJHDRalphabitdepth) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + if (pData->iJHDRalphacompression) + MNG_ERROR (pData, MNG_INVALIDCOMPRESS); + if (pData->iJHDRalphafilter) + MNG_ERROR (pData, MNG_INVALIDFILTER); + if (pData->iJHDRalphainterlace) + MNG_ERROR (pData, MNG_INVALIDINTERLACE); + } + + if (!pData->bHasheader) /* first chunk ? */ + { + pData->bHasheader = MNG_TRUE; /* we've got a header */ + pData->eImagetype = mng_it_jng; /* then this must be a JNG */ + pData->iWidth = ((mng_jhdrp)pChunk)->iWidth; + pData->iHeight = ((mng_jhdrp)pChunk)->iHeight; + /* predict alpha-depth ! */ + if ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) + pData->iAlphadepth = pData->iJHDRalphabitdepth; + else + pData->iAlphadepth = 0; + /* fits on maximum canvas ? */ + if ((pData->iWidth > pData->iMaxwidth) || (pData->iHeight > pData->iMaxheight)) + MNG_WARNING (pData, MNG_IMAGETOOLARGE); + + if (pData->fProcessheader) /* inform the app ? */ + if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + } + + pData->iColortype = 0; /* fake grayscale for other routines */ + pData->iImagelevel++; /* one level deeper */ + +#ifdef MNG_SUPPORT_DISPLAY + { + mng_retcode iRetcode = mng_process_display_jhdr (pData); + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* MNG_SUPPORT_DISPLAY */ + +#ifdef MNG_NO_16BIT_SUPPORT + if (((mng_jhdrp)pChunk)->iAlphasampledepth > 8) + ((mng_jhdrp)pChunk)->iAlphasampledepth = 8; +#endif + + return MNG_NOERROR; /* done */ +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +MNG_C_SPECIALFUNC (mng_special_jdaa) +{ + if (pData->iJHDRalphacompression != MNG_COMPRESSION_BASELINEJPEG) + MNG_ERROR (pData, MNG_SEQUENCEERROR); + + pData->bHasJDAA = MNG_TRUE; /* got some JDAA now, don't we */ + return MNG_NOERROR; +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +MNG_C_SPECIALFUNC (mng_special_jdat) +{ + pData->bHasJDAT = MNG_TRUE; /* got some JDAT now, don't we */ + return MNG_NOERROR; +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +MNG_C_SPECIALFUNC (mng_special_jsep) +{ + pData->bHasJSEP = MNG_TRUE; /* indicate we've had the 8-/12-bit separator */ + return MNG_NOERROR; +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ +/* ************************************************************************** */ +/* MNG chunks */ + +MNG_C_SPECIALFUNC (mng_special_mhdr) +{ + if (pData->bHasheader) /* can only be the first chunk! */ + MNG_ERROR (pData, MNG_SEQUENCEERROR); + + pData->bHasMHDR = MNG_TRUE; /* oh boy, a real MNG */ + pData->bHasheader = MNG_TRUE; /* we've got a header */ + pData->eImagetype = mng_it_mng; /* fill header fields */ + pData->iWidth = ((mng_mhdrp)pChunk)->iWidth; + pData->iHeight = ((mng_mhdrp)pChunk)->iHeight; + pData->iTicks = ((mng_mhdrp)pChunk)->iTicks; + pData->iLayercount = ((mng_mhdrp)pChunk)->iLayercount; + pData->iFramecount = ((mng_mhdrp)pChunk)->iFramecount; + pData->iPlaytime = ((mng_mhdrp)pChunk)->iPlaytime; + pData->iSimplicity = ((mng_mhdrp)pChunk)->iSimplicity; +#ifndef MNG_NO_OLD_VERSIONS + pData->bPreDraft48 = MNG_FALSE; +#endif + /* predict alpha-depth */ + if ((pData->iSimplicity & 0x00000001) == 0) +#ifndef MNG_NO_16BIT_SUPPORT + pData->iAlphadepth = 16; /* no indicators = assume the worst */ +#else + pData->iAlphadepth = 8; /* anything else = assume the worst */ +#endif + else + if ((pData->iSimplicity & 0x00000008) == 0) + pData->iAlphadepth = 0; /* no transparency at all */ + else + if ((pData->iSimplicity & 0x00000140) == 0x00000040) + pData->iAlphadepth = 1; /* no semi-transparency guaranteed */ + else +#ifndef MNG_NO_16BIT_SUPPORT + pData->iAlphadepth = 16; /* anything else = assume the worst */ +#else + pData->iAlphadepth = 8; /* anything else = assume the worst */ +#endif + +#ifdef MNG_INCLUDE_JNG /* can we handle the complexity ? */ + if (pData->iSimplicity & 0x0000FC00) +#else + if (pData->iSimplicity & 0x0000FC10) +#endif + MNG_ERROR (pData, MNG_MNGTOOCOMPLEX); + /* fits on maximum canvas ? */ + if ((pData->iWidth > pData->iMaxwidth) || (pData->iHeight > pData->iMaxheight)) + MNG_WARNING (pData, MNG_IMAGETOOLARGE); + + if (pData->fProcessheader) /* inform the app ? */ + if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + pData->iImagelevel++; /* one level deeper */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_mend) +{ +#ifdef MNG_SUPPORT_DISPLAY + { /* do something */ + mng_retcode iRetcode = mng_process_display_mend (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (!pData->iTotalframes) /* save totals */ + pData->iTotalframes = pData->iFrameseq; + if (!pData->iTotallayers) + pData->iTotallayers = pData->iLayerseq; + if (!pData->iTotalplaytime) + pData->iTotalplaytime = pData->iFrametime; + } +#endif /* MNG_SUPPORT_DISPLAY */ + + pData->bHasMHDR = MNG_FALSE; /* end of the line, bro! */ + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_LOOP +MNG_F_SPECIALFUNC (mng_debunk_loop) +{ + mng_loopp pLOOP = (mng_loopp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + + if (iRawlen >= 5) /* length checks */ + { + if (iRawlen >= 6) + { + if ((iRawlen - 6) % 4 != 0) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + } + } + else + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + if (iRawlen >= 5) /* store the fields */ + { + pLOOP->iLevel = *pRawdata; + +#ifndef MNG_NO_OLD_VERSIONS + if (pData->bPreDraft48) + { + pLOOP->iTermination = *(pRawdata+1); + pLOOP->iRepeat = mng_get_uint32 (pRawdata+2); + } + else +#endif + { + pLOOP->iRepeat = mng_get_uint32 (pRawdata+1); + } + + if (iRawlen >= 6) + { +#ifndef MNG_NO_OLD_VERSIONS + if (!pData->bPreDraft48) +#endif + pLOOP->iTermination = *(pRawdata+5); + + if (iRawlen >= 10) + { + pLOOP->iItermin = mng_get_uint32 (pRawdata+6); + +#ifndef MNG_NO_LOOP_SIGNALS_SUPPORTED + if (iRawlen >= 14) + { + pLOOP->iItermax = mng_get_uint32 (pRawdata+10); + pLOOP->iCount = (iRawlen - 14) / 4; + + if (pLOOP->iCount) + { + MNG_ALLOC (pData, pLOOP->pSignals, pLOOP->iCount << 2); + +#ifndef MNG_BIGENDIAN_SUPPORTED + { + mng_uint32 iX; + mng_uint8p pIn = pRawdata + 14; + mng_uint32p pOut = (mng_uint32p)pLOOP->pSignals; + + for (iX = 0; iX < pLOOP->iCount; iX++) + { + *pOut++ = mng_get_uint32 (pIn); + pIn += 4; + } + } +#else + MNG_COPY (pLOOP->pSignals, pRawdata + 14, pLOOP->iCount << 2); +#endif /* !MNG_BIGENDIAN_SUPPORTED */ + } + } +#endif + } + } + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_LOOP +MNG_C_SPECIALFUNC (mng_special_loop) +{ + if (!pData->bCacheplayback) /* must store playback info to work!! */ + MNG_ERROR (pData, MNG_LOOPWITHCACHEOFF); + +#ifdef MNG_SUPPORT_DISPLAY + { + mng_retcode iRetcode; + + pData->bHasLOOP = MNG_TRUE; /* indicate we're inside a loop */ + /* create the LOOP ani-object */ + iRetcode = mng_create_ani_loop (pData, pChunk); + if (iRetcode) /* on error bail out */ + return iRetcode; + /* skip till matching ENDL if iteration=0 */ + if ((!pData->bSkipping) && (((mng_loopp)pChunk)->iRepeat == 0)) + pData->bSkipping = MNG_TRUE; + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_LOOP +MNG_C_SPECIALFUNC (mng_special_endl) +{ +#ifdef MNG_SUPPORT_DISPLAY + if (pData->bHasLOOP) /* are we really processing a loop ? */ + { + mng_uint8 iLevel = ((mng_endlp)pChunk)->iLevel; + /* create an ENDL animation object */ + return mng_create_ani_endl (pData, iLevel); + } + else + MNG_ERROR (pData, MNG_NOMATCHINGLOOP); +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DEFI +MNG_C_SPECIALFUNC (mng_special_defi) +{ +#ifdef MNG_SUPPORT_DISPLAY + mng_retcode iRetcode; + + pData->iDEFIobjectid = ((mng_defip)pChunk)->iObjectid; + pData->bDEFIhasdonotshow = ((mng_defip)pChunk)->bHasdonotshow; + pData->iDEFIdonotshow = ((mng_defip)pChunk)->iDonotshow; + pData->bDEFIhasconcrete = ((mng_defip)pChunk)->bHasconcrete; + pData->iDEFIconcrete = ((mng_defip)pChunk)->iConcrete; + pData->bDEFIhasloca = ((mng_defip)pChunk)->bHasloca; + pData->iDEFIlocax = ((mng_defip)pChunk)->iXlocation; + pData->iDEFIlocay = ((mng_defip)pChunk)->iYlocation; + pData->bDEFIhasclip = ((mng_defip)pChunk)->bHasclip; + pData->iDEFIclipl = ((mng_defip)pChunk)->iLeftcb; + pData->iDEFIclipr = ((mng_defip)pChunk)->iRightcb; + pData->iDEFIclipt = ((mng_defip)pChunk)->iTopcb; + pData->iDEFIclipb = ((mng_defip)pChunk)->iBottomcb; + /* create an animation object */ + iRetcode = mng_create_ani_defi (pData); + if (!iRetcode) /* do display processing */ + iRetcode = mng_process_display_defi (pData); + return iRetcode; +#else + return MNG_NOERROR; /* done */ +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_BASI +MNG_C_SPECIALFUNC (mng_special_basi) +{ + pData->bHasBASI = MNG_TRUE; /* inside a BASI-IEND block now */ + /* store interesting fields */ + pData->iDatawidth = ((mng_basip)pChunk)->iWidth; + pData->iDataheight = ((mng_basip)pChunk)->iHeight; + pData->iBitdepth = ((mng_basip)pChunk)->iBitdepth; + pData->iColortype = ((mng_basip)pChunk)->iColortype; + pData->iCompression = ((mng_basip)pChunk)->iCompression; + pData->iFilter = ((mng_basip)pChunk)->iFilter; + pData->iInterlace = ((mng_basip)pChunk)->iInterlace; + +#if defined(MNG_NO_1_2_4BIT_SUPPORT) || defined(MNG_NO_16BIT_SUPPORT) + pData->iPNGmult = 1; + pData->iPNGdepth = pData->iBitdepth; +#endif + +#ifdef MNG_NO_1_2_4BIT_SUPPORT + if (pData->iBitdepth < 8) + pData->iBitdepth = 8; +#endif +#ifdef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth > 8) + { + pData->iBitdepth = 8; + pData->iPNGmult = 2; + } +#endif + + if ((pData->iBitdepth != 8) /* parameter validity checks */ +#ifndef MNG_NO_1_2_4BIT_SUPPORT + && (pData->iBitdepth != 1) && + (pData->iBitdepth != 2) && + (pData->iBitdepth != 4) +#endif +#ifndef MNG_NO_16BIT_SUPPORT + && (pData->iBitdepth != 16) +#endif + ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if ((pData->iColortype != MNG_COLORTYPE_GRAY ) && + (pData->iColortype != MNG_COLORTYPE_RGB ) && + (pData->iColortype != MNG_COLORTYPE_INDEXED) && + (pData->iColortype != MNG_COLORTYPE_GRAYA ) && + (pData->iColortype != MNG_COLORTYPE_RGBA ) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + + if ((pData->iColortype == MNG_COLORTYPE_INDEXED) && (pData->iBitdepth > 8)) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if (((pData->iColortype == MNG_COLORTYPE_RGB ) || + (pData->iColortype == MNG_COLORTYPE_GRAYA ) || + (pData->iColortype == MNG_COLORTYPE_RGBA ) ) && + (pData->iBitdepth < 8 ) ) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + +#if defined(FILTER192) || defined(FILTER193) + if ((pData->iFilter != MNG_FILTER_ADAPTIVE ) && +#if defined(FILTER192) && defined(FILTER193) + (pData->iFilter != MNG_FILTER_DIFFERING) && + (pData->iFilter != MNG_FILTER_NOFILTER ) ) +#else +#ifdef FILTER192 + (pData->iFilter != MNG_FILTER_DIFFERING) ) +#else + (pData->iFilter != MNG_FILTER_NOFILTER ) ) +#endif +#endif + MNG_ERROR (pData, MNG_INVALIDFILTER); +#else + if (pData->iFilter) + MNG_ERROR (pData, MNG_INVALIDFILTER); +#endif + + pData->iImagelevel++; /* one level deeper */ + +#ifdef MNG_SUPPORT_DISPLAY + { /* create an animation object */ + mng_retcode iRetcode = mng_create_ani_basi (pData, pChunk); + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* MNG_SUPPORT_DISPLAY */ + +#ifdef MNG_NO_16BIT_SUPPORT + if (((mng_basip)pChunk)->iBitdepth > 8) + ((mng_basip)pChunk)->iBitdepth = 8; +#endif + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_CLON +MNG_C_SPECIALFUNC (mng_special_clon) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_clon (pData, pChunk); +#else + return MNG_NOERROR; /* done */ +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +MNG_F_SPECIALFUNC (mng_debunk_past) +{ + mng_pastp pPAST = (mng_pastp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_uint32 iSize; + mng_uint32 iX; + mng_past_sourcep pSource; + /* check the length */ + if ((iRawlen < 41) || (((iRawlen - 11) % 30) != 0)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + pPAST->iDestid = mng_get_uint16 (pRawdata); + pPAST->iTargettype = *(pRawdata+2); + pPAST->iTargetx = mng_get_int32 (pRawdata+3); + pPAST->iTargety = mng_get_int32 (pRawdata+7); + pPAST->iCount = ((iRawlen - 11) / 30); /* how many entries again? */ + iSize = pPAST->iCount * sizeof (mng_past_source); + + pRawdata += 11; + /* get a buffer for all the source blocks */ + MNG_ALLOC (pData, pPAST->pSources, iSize); + + pSource = (mng_past_sourcep)(pPAST->pSources); + + for (iX = pPAST->iCount; iX > 0; iX--) + { /* now copy the source blocks */ + pSource->iSourceid = mng_get_uint16 (pRawdata); + pSource->iComposition = *(pRawdata+2); + pSource->iOrientation = *(pRawdata+3); + pSource->iOffsettype = *(pRawdata+4); + pSource->iOffsetx = mng_get_int32 (pRawdata+5); + pSource->iOffsety = mng_get_int32 (pRawdata+9); + pSource->iBoundarytype = *(pRawdata+13); + pSource->iBoundaryl = mng_get_int32 (pRawdata+14); + pSource->iBoundaryr = mng_get_int32 (pRawdata+18); + pSource->iBoundaryt = mng_get_int32 (pRawdata+22); + pSource->iBoundaryb = mng_get_int32 (pRawdata+26); + + pSource++; + pRawdata += 30; + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +MNG_C_SPECIALFUNC (mng_special_past) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_past (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DISC +MNG_F_SPECIALFUNC (mng_disc_entries) +{ + mng_discp pDISC = (mng_discp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + + if ((iRawlen % 2) != 0) /* check the length */ + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + pDISC->iCount = (iRawlen / sizeof (mng_uint16)); + + if (pDISC->iCount) + { + MNG_ALLOC (pData, pDISC->pObjectids, iRawlen); + +#ifndef MNG_BIGENDIAN_SUPPORTED + { + mng_uint32 iX; + mng_uint8p pIn = pRawdata; + mng_uint16p pOut = pDISC->pObjectids; + + for (iX = pDISC->iCount; iX > 0; iX--) + { + *pOut++ = mng_get_uint16 (pIn); + pIn += 2; + } + } +#else + MNG_COPY (pDISC->pObjectids, pRawdata, iRawlen); +#endif /* !MNG_BIGENDIAN_SUPPORTED */ + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DISC +MNG_C_SPECIALFUNC (mng_special_disc) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_disc (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_BACK +MNG_C_SPECIALFUNC (mng_special_back) +{ +#ifdef MNG_SUPPORT_DISPLAY + /* retrieve the fields */ + pData->bHasBACK = MNG_TRUE; + pData->iBACKred = ((mng_backp)pChunk)->iRed; + pData->iBACKgreen = ((mng_backp)pChunk)->iGreen; + pData->iBACKblue = ((mng_backp)pChunk)->iBlue; + pData->iBACKmandatory = ((mng_backp)pChunk)->iMandatory; + pData->iBACKimageid = ((mng_backp)pChunk)->iImageid; + pData->iBACKtile = ((mng_backp)pChunk)->iTile; + + return mng_create_ani_back (pData); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_FRAM +MNG_F_SPECIALFUNC (mng_fram_remainder) +{ + mng_framp pFRAM = (mng_framp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_uint32 iRequired = 0; + + if (iRawlen < 4) /* must have at least 4 bytes */ + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + iRequired = 4; /* calculate and check required remaining length */ + + pFRAM->iChangedelay = *pRawdata; + pFRAM->iChangetimeout = *(pRawdata+1); + pFRAM->iChangeclipping = *(pRawdata+2); + pFRAM->iChangesyncid = *(pRawdata+3); + + if (pFRAM->iChangedelay ) { iRequired += 4; } + if (pFRAM->iChangetimeout ) { iRequired += 4; } + if (pFRAM->iChangeclipping) { iRequired += 17; } + + if (pFRAM->iChangesyncid) + { + if ((iRawlen - iRequired) % 4 != 0) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + } + else + { + if (iRawlen != iRequired) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + } + + pRawdata += 4; + + if (pFRAM->iChangedelay) /* delay changed ? */ + { + pFRAM->iDelay = mng_get_uint32 (pRawdata); + pRawdata += 4; + } + + if (pFRAM->iChangetimeout) /* timeout changed ? */ + { + pFRAM->iTimeout = mng_get_uint32 (pRawdata); + pRawdata += 4; + } + + if (pFRAM->iChangeclipping) /* clipping changed ? */ + { + pFRAM->iBoundarytype = *pRawdata; + pFRAM->iBoundaryl = mng_get_int32 (pRawdata+1); + pFRAM->iBoundaryr = mng_get_int32 (pRawdata+5); + pFRAM->iBoundaryt = mng_get_int32 (pRawdata+9); + pFRAM->iBoundaryb = mng_get_int32 (pRawdata+13); + pRawdata += 17; + } + + if (pFRAM->iChangesyncid) + { + pFRAM->iCount = (iRawlen - iRequired) / 4; + + if (pFRAM->iCount) + { + MNG_ALLOC (pData, pFRAM->pSyncids, pFRAM->iCount * 4); + +#ifndef MNG_BIGENDIAN_SUPPORTED + { + mng_uint32 iX; + mng_uint32p pOut = pFRAM->pSyncids; + + for (iX = pFRAM->iCount; iX > 0; iX--) + { + *pOut++ = mng_get_uint32 (pRawdata); + pRawdata += 4; + } + } +#else + MNG_COPY (pFRAM->pSyncids, pRawdata, pFRAM->iCount * 4); +#endif /* !MNG_BIGENDIAN_SUPPORTED */ + } + } + +#ifndef MNG_NO_OLD_VERSIONS + if (pData->bPreDraft48) /* old style input-stream ? */ + { + switch (pFRAM->iMode) /* fix the framing mode then */ + { + case 0: { break; } + case 1: { pFRAM->iMode = 3; break; } + case 2: { pFRAM->iMode = 4; break; } + case 3: { pFRAM->iMode = 1; break; } + case 4: { pFRAM->iMode = 1; break; } + case 5: { pFRAM->iMode = 2; break; } + default: { pFRAM->iMode = 1; break; } + } + } +#endif + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_FRAM +MNG_C_SPECIALFUNC (mng_special_fram) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_fram (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MOVE +MNG_C_SPECIALFUNC (mng_special_move) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_move (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_CLIP +MNG_C_SPECIALFUNC (mng_special_clip) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_clip (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SHOW +MNG_C_SPECIALFUNC (mng_special_show) +{ +#ifdef MNG_SUPPORT_DISPLAY + mng_retcode iRetcode; + + if (!((mng_showp)pChunk)->bEmpty) /* any data ? */ + { + if (!((mng_showp)pChunk)->bHaslastid) + ((mng_showp)pChunk)->iLastid = ((mng_showp)pChunk)->iFirstid; + + pData->iSHOWfromid = ((mng_showp)pChunk)->iFirstid; + pData->iSHOWtoid = ((mng_showp)pChunk)->iLastid; + pData->iSHOWmode = ((mng_showp)pChunk)->iMode; + } + else /* use defaults then */ + { + pData->iSHOWfromid = 1; + pData->iSHOWtoid = 65535; + pData->iSHOWmode = 2; + } + /* create a SHOW animation object */ + iRetcode = mng_create_ani_show (pData); + if (!iRetcode) /* go and do it! */ + iRetcode = mng_process_display_show (pData); + +#endif /* MNG_SUPPORT_DISPLAY */ + + return iRetcode; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_TERM +MNG_C_SPECIALFUNC (mng_special_term) +{ + /* should be behind MHDR or SAVE !! */ + if ((!pData->bHasSAVE) && (pData->iChunkseq > 2)) + { + pData->bMisplacedTERM = MNG_TRUE; /* indicate we found a misplaced TERM */ + /* and send a warning signal!!! */ + MNG_WARNING (pData, MNG_SEQUENCEERROR); + } + + pData->bHasTERM = MNG_TRUE; + + if (pData->fProcessterm) /* inform the app ? */ + if (!pData->fProcessterm (((mng_handle)pData), + ((mng_termp)pChunk)->iTermaction, + ((mng_termp)pChunk)->iIteraction, + ((mng_termp)pChunk)->iDelay, + ((mng_termp)pChunk)->iItermax)) + MNG_ERROR (pData, MNG_APPMISCERROR); + +#ifdef MNG_SUPPORT_DISPLAY + { /* create the TERM ani-object */ + mng_retcode iRetcode = mng_create_ani_term (pData, pChunk); + if (iRetcode) /* on error bail out */ + return iRetcode; + /* save for future reference */ + pData->pTermaniobj = pData->pLastaniobj; + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SAVE +MNG_F_SPECIALFUNC (mng_save_entries) +{ + mng_savep pSAVE = (mng_savep)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_save_entryp pEntry = MNG_NULL; + mng_uint32 iCount = 0; + mng_uint8 iOtype = *pRawdata; + mng_uint8 iEtype; + mng_uint8p pTemp; + mng_uint8p pNull; + mng_uint32 iLen; + mng_uint32 iOffset[2]; + mng_uint32 iStarttime[2]; + mng_uint32 iFramenr; + mng_uint32 iLayernr; + mng_uint32 iX; + mng_uint32 iNamesize; + + if ((iOtype != 4) && (iOtype != 8)) + MNG_ERROR (pData, MNG_INVOFFSETSIZE); + + pSAVE->iOffsettype = iOtype; + + for (iX = 0; iX < 2; iX++) /* do this twice to get the count first ! */ + { + pTemp = pRawdata + 1; + iLen = iRawlen - 1; + + if (iX) /* second run ? */ + { + MNG_ALLOC (pData, pEntry, (iCount * sizeof (mng_save_entry))); + + pSAVE->iCount = iCount; + pSAVE->pEntries = pEntry; + } + + while (iLen) /* anything left ? */ + { + iEtype = *pTemp; /* entrytype */ + + if ((iEtype != 0) && (iEtype != 1) && (iEtype != 2) && (iEtype != 3)) + MNG_ERROR (pData, MNG_INVENTRYTYPE); + + pTemp++; + + if (iEtype > 1) + { + iOffset [0] = 0; + iOffset [1] = 0; + iStarttime [0] = 0; + iStarttime [1] = 0; + iLayernr = 0; + iFramenr = 0; + } + else + { + if (iOtype == 4) + { + iOffset [0] = 0; + iOffset [1] = mng_get_uint32 (pTemp); + + pTemp += 4; + } + else + { + iOffset [0] = mng_get_uint32 (pTemp); + iOffset [1] = mng_get_uint32 (pTemp+4); + + pTemp += 8; + } + + if (iEtype > 0) + { + iStarttime [0] = 0; + iStarttime [1] = 0; + iLayernr = 0; + iFramenr = 0; + } + else + { + if (iOtype == 4) + { + iStarttime [0] = 0; + iStarttime [1] = mng_get_uint32 (pTemp+0); + iLayernr = mng_get_uint32 (pTemp+4); + iFramenr = mng_get_uint32 (pTemp+8); + + pTemp += 12; + } + else + { + iStarttime [0] = mng_get_uint32 (pTemp+0); + iStarttime [1] = mng_get_uint32 (pTemp+4); + iLayernr = mng_get_uint32 (pTemp+8); + iFramenr = mng_get_uint32 (pTemp+12); + + pTemp += 16; + } + } + } + + pNull = pTemp; /* get the name length */ + while (*pNull) + pNull++; + + if ((pNull - pRawdata) > (mng_int32)iRawlen) + { + iNamesize = iLen; /* no null found; so end of SAVE */ + iLen = 0; + } + else + { + iNamesize = pNull - pTemp; /* should be another entry */ + iLen -= iNamesize; + + if (!iLen) /* must not end with a null ! */ + MNG_ERROR (pData, MNG_ENDWITHNULL); + } + + if (!pEntry) + { + iCount++; + } + else + { + pEntry->iEntrytype = iEtype; + pEntry->iOffset [0] = iOffset [0]; + pEntry->iOffset [1] = iOffset [1]; + pEntry->iStarttime [0] = iStarttime [0]; + pEntry->iStarttime [1] = iStarttime [1]; + pEntry->iLayernr = iLayernr; + pEntry->iFramenr = iFramenr; + pEntry->iNamesize = iNamesize; + + if (iNamesize) + { + MNG_ALLOC (pData, pEntry->zName, iNamesize+1); + MNG_COPY (pEntry->zName, pTemp, iNamesize); + } + + pEntry++; + } + + pTemp += iNamesize; + } + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SAVE +MNG_C_SPECIALFUNC (mng_special_save) +{ + pData->bHasSAVE = MNG_TRUE; + + if (pData->fProcesssave) /* inform the application ? */ + { + mng_bool bOke = pData->fProcesssave ((mng_handle)pData); + if (!bOke) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + +#ifdef MNG_SUPPORT_DISPLAY + { + mng_retcode iRetcode; + + /* TODO: something with the parameters */ + + /* create a SAVE animation object */ + iRetcode = mng_create_ani_save (pData); + if (!iRetcode) /* process it */ + iRetcode = mng_process_display_save (pData); + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SEEK +MNG_C_SPECIALFUNC (mng_special_seek) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_DISPLAY + /* create a SEEK animation object */ + iRetcode = mng_create_ani_seek (pData, pChunk); + if (iRetcode) /* on error bail out */ + return iRetcode; + +#endif /* MNG_SUPPORT_DISPLAY */ + + if (pData->fProcessseek) /* inform the app ? */ + if (!pData->fProcessseek ((mng_handle)pData, ((mng_seekp)pChunk)->zName)) + MNG_ERROR (pData, MNG_APPMISCERROR); + +#ifdef MNG_SUPPORT_DISPLAY + return mng_process_display_seek (pData); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_eXPI +MNG_C_SPECIALFUNC (mng_special_expi) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_fPRI +MNG_C_SPECIALFUNC (mng_special_fpri) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_nEED +MNG_LOCAL mng_bool CheckKeyword (mng_datap pData, + mng_uint8p pKeyword) +{ + mng_chunkid handled_chunks [] = + { + MNG_UINT_BACK, /* keep it sorted !!!! */ + MNG_UINT_BASI, + MNG_UINT_CLIP, + MNG_UINT_CLON, +#ifndef MNG_NO_DELTA_PNG +/* TODO: MNG_UINT_DBYK, */ +#endif + MNG_UINT_DEFI, +#ifndef MNG_NO_DELTA_PNG + MNG_UINT_DHDR, +#endif + MNG_UINT_DISC, +#ifndef MNG_NO_DELTA_PNG +/* TODO: MNG_UINT_DROP, */ +#endif + MNG_UINT_ENDL, + MNG_UINT_FRAM, + MNG_UINT_IDAT, + MNG_UINT_IEND, + MNG_UINT_IHDR, +#ifndef MNG_NO_DELTA_PNG +#ifdef MNG_INCLUDE_JNG + MNG_UINT_IJNG, +#endif + MNG_UINT_IPNG, +#endif +#ifdef MNG_INCLUDE_JNG + MNG_UINT_JDAA, + MNG_UINT_JDAT, + MNG_UINT_JHDR, +/* TODO: MNG_UINT_JSEP, */ + MNG_UINT_JdAA, +#endif + MNG_UINT_LOOP, + MNG_UINT_MAGN, + MNG_UINT_MEND, + MNG_UINT_MHDR, + MNG_UINT_MOVE, +/* TODO: MNG_UINT_ORDR, */ + MNG_UINT_PAST, + MNG_UINT_PLTE, +#ifndef MNG_NO_DELTA_PNG + MNG_UINT_PPLT, + MNG_UINT_PROM, +#endif + MNG_UINT_SAVE, + MNG_UINT_SEEK, + MNG_UINT_SHOW, + MNG_UINT_TERM, + MNG_UINT_bKGD, + MNG_UINT_cHRM, +/* TODO: MNG_UINT_eXPI, */ + MNG_UINT_evNT, +/* TODO: MNG_UINT_fPRI, */ + MNG_UINT_gAMA, +/* TODO: MNG_UINT_hIST, */ + MNG_UINT_iCCP, + MNG_UINT_iTXt, + MNG_UINT_nEED, +/* TODO: MNG_UINT_oFFs, */ +/* TODO: MNG_UINT_pCAL, */ +/* TODO: MNG_UINT_pHYg, */ +/* TODO: MNG_UINT_pHYs, */ +/* TODO: MNG_UINT_sBIT, */ +/* TODO: MNG_UINT_sCAL, */ +/* TODO: MNG_UINT_sPLT, */ + MNG_UINT_sRGB, + MNG_UINT_tEXt, + MNG_UINT_tIME, + MNG_UINT_tRNS, + MNG_UINT_zTXt, + }; + + mng_bool bOke = MNG_FALSE; + + if (pData->fProcessneed) /* does the app handle it ? */ + bOke = pData->fProcessneed ((mng_handle)pData, (mng_pchar)pKeyword); + + if (!bOke) + { /* find the keyword length */ + mng_uint8p pNull = pKeyword; + while (*pNull) + pNull++; + + if ((pNull - pKeyword) == 4) /* test a chunk ? */ + { /* get the chunk-id */ + mng_chunkid iChunkid = (*pKeyword << 24) + (*(pKeyword+1) << 16) + + (*(pKeyword+2) << 8) + (*(pKeyword+3) ); + /* binary search variables */ + mng_int32 iTop, iLower, iUpper, iMiddle; + /* determine max index of table */ + iTop = (sizeof (handled_chunks) / sizeof (handled_chunks [0])) - 1; + + /* binary search; with 52 chunks, worst-case is 7 comparisons */ + iLower = 0; + iMiddle = iTop >> 1; + iUpper = iTop; + + do /* the binary search itself */ + { + if (handled_chunks [iMiddle] < iChunkid) + iLower = iMiddle + 1; + else if (handled_chunks [iMiddle] > iChunkid) + iUpper = iMiddle - 1; + else + { + bOke = MNG_TRUE; + break; + } + + iMiddle = (iLower + iUpper) >> 1; + } + while (iLower <= iUpper); + } + /* test draft ? */ + if ((!bOke) && ((pNull - pKeyword) == 8) && + (*pKeyword == 'd') && (*(pKeyword+1) == 'r') && + (*(pKeyword+2) == 'a') && (*(pKeyword+3) == 'f') && + (*(pKeyword+4) == 't') && (*(pKeyword+5) == ' ')) + { + mng_uint32 iDraft; + + iDraft = (*(pKeyword+6) - '0') * 10 + (*(pKeyword+7) - '0'); + bOke = (mng_bool)(iDraft <= MNG_MNG_DRAFT); + } + /* test MNG 1.0/1.1 ? */ + if ((!bOke) && ((pNull - pKeyword) == 7) && + (*pKeyword == 'M') && (*(pKeyword+1) == 'N') && + (*(pKeyword+2) == 'G') && (*(pKeyword+3) == '-') && + (*(pKeyword+4) == '1') && (*(pKeyword+5) == '.') && + ((*(pKeyword+6) == '0') || (*(pKeyword+6) == '1'))) + bOke = MNG_TRUE; + /* test CACHEOFF ? */ + if ((!bOke) && ((pNull - pKeyword) == 8) && + (*pKeyword == 'C') && (*(pKeyword+1) == 'A') && + (*(pKeyword+2) == 'C') && (*(pKeyword+3) == 'H') && + (*(pKeyword+4) == 'E') && (*(pKeyword+5) == 'O') && + (*(pKeyword+6) == 'F') && (*(pKeyword+7) == 'F')) + { + if (!pData->pFirstaniobj) /* only if caching hasn't started yet ! */ + { + bOke = MNG_TRUE; + pData->bCacheplayback = MNG_FALSE; + pData->bStorechunks = MNG_FALSE; + } + } + } + + return bOke; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_nEED +MNG_C_SPECIALFUNC (mng_special_need) +{ + /* let's check it */ + mng_bool bOke = MNG_TRUE; + mng_uint8p pNull, pTemp, pMax; + + pTemp = (mng_uint8p)((mng_needp)pChunk)->zKeywords; + pMax = (mng_uint8p)(pTemp + ((mng_needp)pChunk)->iKeywordssize); + pNull = pTemp; + while (*pNull) + pNull++; + + while ((bOke) && (pNull < pMax)) + { + bOke = CheckKeyword (pData, pTemp); + pTemp = pNull + 1; + pNull = pTemp; + while (*pNull) + pNull++; + } + + if (bOke) + bOke = CheckKeyword (pData, pTemp); + + if (!bOke) + MNG_ERROR (pData, MNG_UNSUPPORTEDNEED); + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_pHYg +MNG_C_SPECIALFUNC (mng_special_phyg) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_C_SPECIALFUNC (mng_special_dhdr) +{ + if ((((mng_dhdrp)pChunk)->iDeltatype == MNG_DELTATYPE_REPLACE) && (((mng_dhdrp)pChunk)->bHasblockloc)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + if ((((mng_dhdrp)pChunk)->iDeltatype == MNG_DELTATYPE_NOCHANGE) && (((mng_dhdrp)pChunk)->bHasblocksize)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + pData->bHasDHDR = MNG_TRUE; /* inside a DHDR-IEND block now */ + pData->iDeltatype = ((mng_dhdrp)pChunk)->iDeltatype; + + pData->iImagelevel++; /* one level deeper */ + +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_dhdr (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_C_SPECIALFUNC (mng_special_prom) +{ + if ((((mng_promp)pChunk)->iColortype != MNG_COLORTYPE_GRAY ) && + (((mng_promp)pChunk)->iColortype != MNG_COLORTYPE_RGB ) && + (((mng_promp)pChunk)->iColortype != MNG_COLORTYPE_INDEXED) && + (((mng_promp)pChunk)->iColortype != MNG_COLORTYPE_GRAYA ) && + (((mng_promp)pChunk)->iColortype != MNG_COLORTYPE_RGBA ) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + +#ifdef MNG_NO_16BIT_SUPPORT + if (((mng_promp)pChunk)->iSampledepth == MNG_BITDEPTH_16 ) + ((mng_promp)pChunk)->iSampledepth = MNG_BITDEPTH_8; +#endif + + if ((((mng_promp)pChunk)->iSampledepth != MNG_BITDEPTH_1 ) && + (((mng_promp)pChunk)->iSampledepth != MNG_BITDEPTH_2 ) && + (((mng_promp)pChunk)->iSampledepth != MNG_BITDEPTH_4 ) && + (((mng_promp)pChunk)->iSampledepth != MNG_BITDEPTH_8 ) +#ifndef MNG_NO_16BIT_SUPPORT + && (((mng_promp)pChunk)->iSampledepth != MNG_BITDEPTH_16) +#endif + ) + MNG_ERROR (pData, MNG_INVSAMPLEDEPTH); + +#ifdef MNG_SUPPORT_DISPLAY + { + mng_retcode iRetcode = mng_create_ani_prom (pData, pChunk); + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_C_SPECIALFUNC (mng_special_ipng) +{ +#ifdef MNG_SUPPORT_DISPLAY + mng_retcode iRetcode = mng_create_ani_ipng (pData); + if (!iRetcode) /* process it */ + iRetcode = mng_process_display_ipng (pData); + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_F_SPECIALFUNC (mng_pplt_entries) +{ + mng_ppltp pPPLT = (mng_ppltp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_uint8 iDeltatype = pPPLT->iDeltatype; + mng_uint32 iMax = 0; + mng_int32 iX, iY, iM; + mng_rgbpaltab aIndexentries; + mng_uint8arr aAlphaentries; + mng_uint8arr aUsedentries; + /* must be indexed color ! */ + if (pData->iColortype != MNG_COLORTYPE_INDEXED) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + + for (iY = 255; iY >= 0; iY--) /* reset arrays */ + { + aIndexentries [iY].iRed = 0; + aIndexentries [iY].iGreen = 0; + aIndexentries [iY].iBlue = 0; + aAlphaentries [iY] = 255; + aUsedentries [iY] = 0; + } + + while (iRawlen) /* as long as there are entries left ... */ + { + mng_uint32 iDiff; + + if (iRawlen < 2) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + iX = (mng_int32)(*pRawdata); /* get start and end index */ + iM = (mng_int32)(*(pRawdata+1)); + + if (iM < iX) + MNG_ERROR (pData, MNG_INVALIDINDEX); + + if (iM >= (mng_int32) iMax) /* determine highest used index */ + iMax = iM + 1; + + pRawdata += 2; + iRawlen -= 2; + iDiff = (iM - iX + 1); + if ((iDeltatype == MNG_DELTATYPE_REPLACERGB ) || + (iDeltatype == MNG_DELTATYPE_DELTARGB ) ) + iDiff = iDiff * 3; + else + if ((iDeltatype == MNG_DELTATYPE_REPLACERGBA) || + (iDeltatype == MNG_DELTATYPE_DELTARGBA ) ) + iDiff = iDiff * 4; + + if (iRawlen < iDiff) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + if ((iDeltatype == MNG_DELTATYPE_REPLACERGB ) || + (iDeltatype == MNG_DELTATYPE_DELTARGB ) ) + { + for (iY = iX; iY <= iM; iY++) + { + aIndexentries [iY].iRed = *pRawdata; + aIndexentries [iY].iGreen = *(pRawdata+1); + aIndexentries [iY].iBlue = *(pRawdata+2); + aUsedentries [iY] = 1; + + pRawdata += 3; + iRawlen -= 3; + } + } + else + if ((iDeltatype == MNG_DELTATYPE_REPLACEALPHA) || + (iDeltatype == MNG_DELTATYPE_DELTAALPHA ) ) + { + for (iY = iX; iY <= iM; iY++) + { + aAlphaentries [iY] = *pRawdata; + aUsedentries [iY] = 1; + + pRawdata++; + iRawlen--; + } + } + else + { + for (iY = iX; iY <= iM; iY++) + { + aIndexentries [iY].iRed = *pRawdata; + aIndexentries [iY].iGreen = *(pRawdata+1); + aIndexentries [iY].iBlue = *(pRawdata+2); + aAlphaentries [iY] = *(pRawdata+3); + aUsedentries [iY] = 1; + + pRawdata += 4; + iRawlen -= 4; + } + } + } + + switch (pData->iBitdepth) /* check maximum allowed entries for bitdepth */ + { + case MNG_BITDEPTH_1 : { + if (iMax > 2) + MNG_ERROR (pData, MNG_INVALIDINDEX); + break; + } + case MNG_BITDEPTH_2 : { + if (iMax > 4) + MNG_ERROR (pData, MNG_INVALIDINDEX); + break; + } + case MNG_BITDEPTH_4 : { + if (iMax > 16) + MNG_ERROR (pData, MNG_INVALIDINDEX); + break; + } + } + + pPPLT->iCount = iMax; + + for (iY = 255; iY >= 0; iY--) + { + pPPLT->aEntries [iY].iRed = aIndexentries [iY].iRed; + pPPLT->aEntries [iY].iGreen = aIndexentries [iY].iGreen; + pPPLT->aEntries [iY].iBlue = aIndexentries [iY].iBlue; + pPPLT->aEntries [iY].iAlpha = aAlphaentries [iY]; + pPPLT->aEntries [iY].bUsed = (mng_bool)(aUsedentries [iY]); + } + + { /* create animation object */ + mng_retcode iRetcode = mng_create_ani_pplt (pData, iDeltatype, iMax, + aIndexentries, aAlphaentries, + aUsedentries); + if (iRetcode) + return iRetcode; + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_C_SPECIALFUNC (mng_special_pplt) +{ + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifdef MNG_INCLUDE_JNG +MNG_C_SPECIALFUNC (mng_special_ijng) +{ +#ifdef MNG_SUPPORT_DISPLAY + mng_retcode iRetcode = mng_create_ani_ijng (pData); + if (!iRetcode) /* process it */ + iRetcode = mng_process_display_ijng (pData); + return iRetcode; +#else + return MNG_NOERROR; /* done */ +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_F_SPECIALFUNC (mng_drop_entries) +{ + mng_dropp pDROP = (mng_dropp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_uint32 iX; + mng_uint32p pEntry; + /* check length */ + if ((iRawlen < 4) || ((iRawlen % 4) != 0)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + MNG_ALLOC (pData, pEntry, iRawlen); + pDROP->iCount = iRawlen / 4; + pDROP->pChunknames = (mng_ptr)pEntry; + + for (iX = pDROP->iCount; iX > 0; iX--) + { + *pEntry++ = mng_get_uint32 (pRawdata); + pRawdata += 4; + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +MNG_C_SPECIALFUNC (mng_special_drop) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_DBYK +MNG_C_SPECIALFUNC (mng_special_dbyk) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_ORDR +MNG_F_SPECIALFUNC (mng_ordr_entries) +{ + mng_ordrp pORDR = (mng_ordrp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_uint32 iX; + mng_ordr_entryp pEntry; + /* check length */ + if ((iRawlen < 5) || ((iRawlen % 5) != 0)) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + MNG_ALLOC (pData, pEntry, iRawlen); + pORDR->iCount = iRawlen / 5; + pORDR->pEntries = (mng_ptr)pEntry; + + for (iX = pORDR->iCount; iX > 0; iX--) + { + pEntry->iChunkname = mng_get_uint32 (pRawdata); + pEntry->iOrdertype = *(pRawdata+4); + pEntry++; + pRawdata += 5; + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_SKIPCHUNK_ORDR +MNG_C_SPECIALFUNC (mng_special_ordr) +{ +#ifdef MNG_SUPPORT_DISPLAY + { + + + /* TODO: something !!! */ + + + } +#endif /* MNG_SUPPORT_DISPLAY */ + + return MNG_NOERROR; /* done */ +} +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MAGN +MNG_F_SPECIALFUNC (mng_debunk_magn) +{ + mng_magnp pMAGN = (mng_magnp)pChunk; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_bool bFaulty; + /* check length */ + if (iRawlen > 20) + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + /* following is an ugly hack to allow faulty layout caused by previous + versions of libmng and MNGeye, which wrote MAGN with a 16-bit + MethodX/MethodY (as opposed to the proper 8-bit as defined in the spec!) */ + + if ((iRawlen == 6) || (iRawlen == 8) || (iRawlen == 10) || (iRawlen == 12) || + (iRawlen == 14) || (iRawlen == 16) || (iRawlen == 20)) + bFaulty = MNG_TRUE; /* these lengths are all wrong */ + else /* length 18 can be right or wrong !!! */ + if ((iRawlen == 18) && (mng_get_uint16 (pRawdata+4) <= 5) && + (mng_get_uint16 (pRawdata+6) < 256) && + (mng_get_uint16 (pRawdata+8) < 256) && + (mng_get_uint16 (pRawdata+10) < 256) && + (mng_get_uint16 (pRawdata+12) < 256) && + (mng_get_uint16 (pRawdata+14) < 256) && + (mng_get_uint16 (pRawdata+16) < 256)) + bFaulty = MNG_TRUE; /* this is very likely the wrong layout */ + else + bFaulty = MNG_FALSE; /* all other cases are handled as right */ + + if (bFaulty) /* wrong layout ? */ + { + if (iRawlen > 0) /* get the fields */ + pMAGN->iFirstid = mng_get_uint16 (pRawdata); + else + pMAGN->iFirstid = 0; + + if (iRawlen > 2) + pMAGN->iLastid = mng_get_uint16 (pRawdata+2); + else + pMAGN->iLastid = pMAGN->iFirstid; + + if (iRawlen > 4) + pMAGN->iMethodX = (mng_uint8)(mng_get_uint16 (pRawdata+4)); + else + pMAGN->iMethodX = 0; + + if (iRawlen > 6) + pMAGN->iMX = mng_get_uint16 (pRawdata+6); + else + pMAGN->iMX = 1; + + if (iRawlen > 8) + pMAGN->iMY = mng_get_uint16 (pRawdata+8); + else + pMAGN->iMY = pMAGN->iMX; + + if (iRawlen > 10) + pMAGN->iML = mng_get_uint16 (pRawdata+10); + else + pMAGN->iML = pMAGN->iMX; + + if (iRawlen > 12) + pMAGN->iMR = mng_get_uint16 (pRawdata+12); + else + pMAGN->iMR = pMAGN->iMX; + + if (iRawlen > 14) + pMAGN->iMT = mng_get_uint16 (pRawdata+14); + else + pMAGN->iMT = pMAGN->iMY; + + if (iRawlen > 16) + pMAGN->iMB = mng_get_uint16 (pRawdata+16); + else + pMAGN->iMB = pMAGN->iMY; + + if (iRawlen > 18) + pMAGN->iMethodY = (mng_uint8)(mng_get_uint16 (pRawdata+18)); + else + pMAGN->iMethodY = pMAGN->iMethodX; + } + else /* proper layout !!!! */ + { + if (iRawlen > 0) /* get the fields */ + pMAGN->iFirstid = mng_get_uint16 (pRawdata); + else + pMAGN->iFirstid = 0; + + if (iRawlen > 2) + pMAGN->iLastid = mng_get_uint16 (pRawdata+2); + else + pMAGN->iLastid = pMAGN->iFirstid; + + if (iRawlen > 4) + pMAGN->iMethodX = *(pRawdata+4); + else + pMAGN->iMethodX = 0; + + if (iRawlen > 5) + pMAGN->iMX = mng_get_uint16 (pRawdata+5); + else + pMAGN->iMX = 1; + + if (iRawlen > 7) + pMAGN->iMY = mng_get_uint16 (pRawdata+7); + else + pMAGN->iMY = pMAGN->iMX; + + if (iRawlen > 9) + pMAGN->iML = mng_get_uint16 (pRawdata+9); + else + pMAGN->iML = pMAGN->iMX; + + if (iRawlen > 11) + pMAGN->iMR = mng_get_uint16 (pRawdata+11); + else + pMAGN->iMR = pMAGN->iMX; + + if (iRawlen > 13) + pMAGN->iMT = mng_get_uint16 (pRawdata+13); + else + pMAGN->iMT = pMAGN->iMY; + + if (iRawlen > 15) + pMAGN->iMB = mng_get_uint16 (pRawdata+15); + else + pMAGN->iMB = pMAGN->iMY; + + if (iRawlen > 17) + pMAGN->iMethodY = *(pRawdata+17); + else + pMAGN->iMethodY = pMAGN->iMethodX; + } + /* check field validity */ + if ((pMAGN->iMethodX > 5) || (pMAGN->iMethodY > 5)) + MNG_ERROR (pData, MNG_INVALIDMETHOD); + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MAGN +MNG_C_SPECIALFUNC (mng_special_magn) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ani_magn (pData, pChunk); +#else + return MNG_NOERROR; +#endif /* MNG_SUPPORT_DISPLAY */ +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_evNT +MNG_F_SPECIALFUNC (mng_evnt_entries) +{ + mng_evntp pEVNT = (mng_evntp)pChunk; + mng_uint32 iRawlen; + mng_uint8p pRawdata; +#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_DYNAMICMNG) + mng_retcode iRetcode; +#endif + mng_uint8p pNull; + mng_uint8 iEventtype; + mng_uint8 iMasktype; + mng_int32 iLeft; + mng_int32 iRight; + mng_int32 iTop; + mng_int32 iBottom; + mng_uint16 iObjectid; + mng_uint8 iIndex; + mng_uint32 iNamesize; + mng_uint32 iCount = 0; + mng_evnt_entryp pEntry = MNG_NULL; + mng_uint32 iX; + + for (iX = 0; iX < 2; iX++) + { + iRawlen = *piRawlen; + pRawdata = *ppRawdata; + + if (iX) /* second run ? */ + { + MNG_ALLOC (pData, pEntry, (iCount * sizeof (mng_evnt_entry))); + pEVNT->iCount = iCount; + pEVNT->pEntries = pEntry; + } + + while (iRawlen) /* anything left ? */ + { + if (iRawlen < 2) /* must have at least 2 bytes ! */ + MNG_ERROR (pData, MNG_INVALIDLENGTH); + + iEventtype = *pRawdata; /* eventtype */ + if (iEventtype > 5) + MNG_ERROR (pData, MNG_INVALIDEVENT); + + pRawdata++; + + iMasktype = *pRawdata; /* masktype */ + if (iMasktype > 5) + MNG_ERROR (pData, MNG_INVALIDMASK); + + pRawdata++; + iRawlen -= 2; + + iLeft = 0; + iRight = 0; + iTop = 0; + iBottom = 0; + iObjectid = 0; + iIndex = 0; + + switch (iMasktype) + { + case 1 : + { + if (iRawlen > 16) + { + iLeft = mng_get_int32 (pRawdata); + iRight = mng_get_int32 (pRawdata+4); + iTop = mng_get_int32 (pRawdata+8); + iBottom = mng_get_int32 (pRawdata+12); + pRawdata += 16; + iRawlen -= 16; + } + else + MNG_ERROR (pData, MNG_INVALIDLENGTH); + break; + } + case 2 : + { + if (iRawlen > 2) + { + iObjectid = mng_get_uint16 (pRawdata); + pRawdata += 2; + iRawlen -= 2; + } + else + MNG_ERROR (pData, MNG_INVALIDLENGTH); + break; + } + case 3 : + { + if (iRawlen > 3) + { + iObjectid = mng_get_uint16 (pRawdata); + iIndex = *(pRawdata+2); + pRawdata += 3; + iRawlen -= 3; + } + else + MNG_ERROR (pData, MNG_INVALIDLENGTH); + break; + } + case 4 : + { + if (iRawlen > 18) + { + iLeft = mng_get_int32 (pRawdata); + iRight = mng_get_int32 (pRawdata+4); + iTop = mng_get_int32 (pRawdata+8); + iBottom = mng_get_int32 (pRawdata+12); + iObjectid = mng_get_uint16 (pRawdata+16); + pRawdata += 18; + iRawlen -= 18; + } + else + MNG_ERROR (pData, MNG_INVALIDLENGTH); + break; + } + case 5 : + { + if (iRawlen > 19) + { + iLeft = mng_get_int32 (pRawdata); + iRight = mng_get_int32 (pRawdata+4); + iTop = mng_get_int32 (pRawdata+8); + iBottom = mng_get_int32 (pRawdata+12); + iObjectid = mng_get_uint16 (pRawdata+16); + iIndex = *(pRawdata+18); + pRawdata += 19; + iRawlen -= 19; + } + else + MNG_ERROR (pData, MNG_INVALIDLENGTH); + break; + } + } + + pNull = pRawdata; /* get the name length */ + while (*pNull) + pNull++; + + if ((pNull - pRawdata) > (mng_int32)iRawlen) + { + iNamesize = iRawlen; /* no null found; so end of evNT */ + iRawlen = 0; + } + else + { + iNamesize = pNull - pRawdata; /* should be another entry */ + iRawlen = iRawlen - iNamesize - 1; + + if (!iRawlen) /* must not end with a null ! */ + MNG_ERROR (pData, MNG_ENDWITHNULL); + } + + if (!iX) + { + iCount++; + } + else + { + pEntry->iEventtype = iEventtype; + pEntry->iMasktype = iMasktype; + pEntry->iLeft = iLeft; + pEntry->iRight = iRight; + pEntry->iTop = iTop; + pEntry->iBottom = iBottom; + pEntry->iObjectid = iObjectid; + pEntry->iIndex = iIndex; + pEntry->iSegmentnamesize = iNamesize; + + if (iNamesize) + { + MNG_ALLOC (pData, pEntry->zSegmentname, iNamesize+1); + MNG_COPY (pEntry->zSegmentname, pRawdata, iNamesize); + } + +#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_DYNAMICMNG) + iRetcode = mng_create_event (pData, (mng_ptr)pEntry); + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif + + pEntry++; + } + + pRawdata = pRawdata + iNamesize + 1; + } + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_evNT +MNG_C_SPECIALFUNC (mng_special_evnt) +{ + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_MPNG_PROPOSAL +MNG_C_SPECIALFUNC (mng_special_mpng) +{ + if ((pData->eImagetype != mng_it_png) && (pData->eImagetype != mng_it_jng)) + MNG_ERROR (pData, MNG_CHUNKNOTALLOWED); + +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_mpng_obj (pData, pChunk); +#else + return MNG_NOERROR; +#endif +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +MNG_C_SPECIALFUNC (mng_special_ahdr) +{ +#ifdef MNG_SUPPORT_DISPLAY + return mng_create_ang_obj (pData, pChunk); +#else + return MNG_NOERROR; +#endif +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +MNG_F_SPECIALFUNC (mng_adat_tiles) +{ + if ((pData->eImagetype != mng_it_ang) || (!pData->pANG)) + MNG_ERROR (pData, MNG_CHUNKNOTALLOWED); + + { + mng_adatp pADAT = (mng_adatp)pChunk; + mng_ang_objp pANG = (mng_ang_objp)pData->pANG; + mng_uint32 iRawlen = *piRawlen; + mng_uint8p pRawdata = *ppRawdata; + mng_retcode iRetcode; + mng_uint8p pBuf; + mng_uint32 iBufsize; + mng_uint32 iRealsize; + mng_uint8p pTemp; + mng_uint8p pTemp2; + mng_int32 iX; + mng_int32 iSize; + +#ifdef MNG_SUPPORT_DISPLAY + mng_imagep pImage; + mng_int32 iTemplen; + mng_uint8p pSwap; + + mng_processobject pProcess; + + mng_uint32 iSavedatawidth; + mng_uint32 iSavedataheight; + + mng_fptr fSaveinitrowproc; + mng_fptr fSavestorerow; + mng_fptr fSaveprocessrow; + mng_fptr fSavedifferrow; + mng_imagep fSavestoreobj; + mng_imagedatap fSavestorebuf; + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + png_imgtype eSavepngimgtype; +#endif + + mng_uint8 iSaveinterlace; + mng_int8 iSavepass; + mng_int32 iSaverow; + mng_int32 iSaverowinc; + mng_int32 iSavecol; + mng_int32 iSavecolinc; + mng_int32 iSaverowsamples; + mng_int32 iSavesamplemul; + mng_int32 iSavesampleofs; + mng_int32 iSavesamplediv; + mng_int32 iSaverowsize; + mng_int32 iSaverowmax; + mng_int32 iSavefilterofs; + mng_int32 iSavepixelofs; + mng_uint32 iSavelevel0; + mng_uint32 iSavelevel1; + mng_uint32 iSavelevel2; + mng_uint32 iSavelevel3; + mng_uint8p pSaveworkrow; + mng_uint8p pSaveprevrow; + mng_uint8p pSaverGBArow; + mng_bool bSaveisRGBA16; + mng_bool bSaveisOpaque; + mng_int32 iSavefilterbpp; + + mng_int32 iSavedestl; + mng_int32 iSavedestt; + mng_int32 iSavedestr; + mng_int32 iSavedestb; + mng_int32 iSavesourcel; + mng_int32 iSavesourcet; + mng_int32 iSavesourcer; + mng_int32 iSavesourceb; +#endif /* MNG_SUPPORT_DISPLAY */ + + iRetcode = mng_inflate_buffer (pData, pRawdata, iRawlen, + &pBuf, &iBufsize, &iRealsize); + if (iRetcode) /* on error bail out */ + { /* don't forget to drop the temp buffer */ + MNG_FREEX (pData, pBuf, iBufsize); + return iRetcode; + } + /* get buffer for tile info in ADAT chunk */ + pADAT->iTilessize = pANG->iNumframes * sizeof(mng_adat_tile); + MNG_ALLOCX (pData, pADAT->pTiles, pADAT->iTilessize); + if (!pADAT->pTiles) + { + pADAT->iTilessize = 0; + MNG_FREEX (pData, pBuf, iBufsize); + MNG_ERROR (pData, MNG_OUTOFMEMORY); + } + + pTemp = pBuf; + pTemp2 = (mng_uint8p)pADAT->pTiles; + + if (!pANG->iStillused) + iSize = 12; + else + iSize = 13; + + for (iX = 0; iX < pANG->iNumframes; iX++) + { + MNG_COPY (pTemp2, pTemp, iSize); + pTemp += iSize; + pTemp2 += sizeof(mng_adat_tile); + } + +#ifdef MNG_SUPPORT_DISPLAY + /* get buffer for tile info in ANG object */ + pANG->iTilessize = pADAT->iTilessize; + MNG_ALLOCX (pData, pANG->pTiles, pANG->iTilessize); + if (!pANG->pTiles) + { + pANG->iTilessize = 0; + MNG_FREEX (pData, pBuf, iBufsize); + MNG_ERROR (pData, MNG_OUTOFMEMORY); + } + /* copy it from the ADAT object */ + MNG_COPY (pANG->pTiles, pADAT->pTiles, pANG->iTilessize); + + /* save IDAT work-parms */ + fSaveinitrowproc = pData->fInitrowproc; + fSavestorerow = pData->fDisplayrow; + fSaveprocessrow = pData->fProcessrow; + fSavedifferrow = pData->fDifferrow; + fSavestoreobj = pData->pStoreobj; + fSavestorebuf = pData->pStorebuf; + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + eSavepngimgtype = pData->ePng_imgtype; +#endif + + iSavedatawidth = pData->iDatawidth; + iSavedataheight = pData->iDataheight; + iSaveinterlace = pData->iInterlace; + iSavepass = pData->iPass; + iSaverow = pData->iRow; + iSaverowinc = pData->iRowinc; + iSavecol = pData->iCol; + iSavecolinc = pData->iColinc; + iSaverowsamples = pData->iRowsamples; + iSavesamplemul = pData->iSamplemul; + iSavesampleofs = pData->iSampleofs; + iSavesamplediv = pData->iSamplediv; + iSaverowsize = pData->iRowsize; + iSaverowmax = pData->iRowmax; + iSavefilterofs = pData->iFilterofs; + iSavepixelofs = pData->iPixelofs; + iSavelevel0 = pData->iLevel0; + iSavelevel1 = pData->iLevel1; + iSavelevel2 = pData->iLevel2; + iSavelevel3 = pData->iLevel3; + pSaveworkrow = pData->pWorkrow; + pSaveprevrow = pData->pPrevrow; + pSaverGBArow = pData->pRGBArow; + bSaveisRGBA16 = pData->bIsRGBA16; + bSaveisOpaque = pData->bIsOpaque; + iSavefilterbpp = pData->iFilterbpp; + iSavedestl = pData->iDestl; + iSavedestt = pData->iDestt; + iSavedestr = pData->iDestr; + iSavedestb = pData->iDestb; + iSavesourcel = pData->iSourcel; + iSavesourcet = pData->iSourcet; + iSavesourcer = pData->iSourcer; + iSavesourceb = pData->iSourceb; + + pData->iDatawidth = pANG->iTilewidth; + pData->iDataheight = pANG->iTileheight; + + pData->iDestl = 0; + pData->iDestt = 0; + pData->iDestr = pANG->iTilewidth; + pData->iDestb = pANG->iTileheight; + pData->iSourcel = 0; + pData->iSourcet = 0; + pData->iSourcer = pANG->iTilewidth; + pData->iSourceb = pANG->iTileheight; + + pData->fInitrowproc = MNG_NULL; + pData->fStorerow = MNG_NULL; + pData->fProcessrow = MNG_NULL; + pData->fDifferrow = MNG_NULL; + + /* clone image object to store the pixel-data from object 0 */ + iRetcode = mng_clone_imageobject (pData, 1, MNG_FALSE, MNG_FALSE, MNG_FALSE, + MNG_FALSE, 0, 0, 0, pData->pObjzero, &pImage); + if (iRetcode) /* on error, drop temp buffer and bail */ + { + MNG_FREEX (pData, pBuf, iBufsize); + return iRetcode; + } + + /* make sure we got the right dimensions and interlacing */ + iRetcode = mng_reset_object_details (pData, pImage, pANG->iTilewidth, pANG->iTileheight, + pImage->pImgbuf->iBitdepth, pImage->pImgbuf->iColortype, + pImage->pImgbuf->iCompression, pImage->pImgbuf->iFilter, + pANG->iInterlace, MNG_FALSE); + if (iRetcode) /* on error, drop temp buffer and bail */ + { + MNG_FREEX (pData, pBuf, iBufsize); + return iRetcode; + } + + pData->pStoreobj = pImage; + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; + pData->ePng_imgtype = mng_png_imgtype(pData->iColortype,pData->iBitdepth); +#else + switch (pData->iColortype) /* determine row initialization routine */ + { + case 0 : { /* gray */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g4_i; + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g16_i; + + break; + } +#endif + } + + break; + } + case 2 : { /* rgb */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_i; + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_i; + + break; + } +#endif + } + + break; + } + case 3 : { /* indexed */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx4_i; + + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx8_i; + + break; + } + } + + break; + } + case 4 : { /* gray+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga16_i; + break; + } +#endif + } + + break; + } + case 6 : { /* rgb+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_i; + + break; + } +#endif + } + + break; + } + } +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + + pData->iFilterofs = 0; /* determine filter characteristics */ + pData->iLevel0 = 0; /* default levels */ + pData->iLevel1 = 0; + pData->iLevel2 = 0; + pData->iLevel3 = 0; + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + { + switch (pData->iColortype) + { + case 0 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 1; + else + pData->iFilterofs = 2; + + break; + } + case 2 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 3; + else + pData->iFilterofs = 6; + + break; + } + case 3 : { + pData->iFilterofs = 1; + break; + } + case 4 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 2; + else + pData->iFilterofs = 4; + + break; + } + case 6 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 4; + else + pData->iFilterofs = 8; + + break; + } + } + } +#endif + +#ifdef FILTER193 /* no adaptive filtering ? */ + if (pData->iFilter == MNG_FILTER_NOFILTER) + pData->iPixelofs = pData->iFilterofs; + else +#endif + pData->iPixelofs = pData->iFilterofs + 1; + + if (pData->fInitrowproc) /* need to initialize row processing? */ + { + iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData); + if (iRetcode) + { + MNG_FREEX (pData, pBuf, iBufsize); + return iRetcode; + } + } + /* calculate remainder of buffer */ + pTemp = pBuf + (mng_int32)(pANG->iNumframes * iSize); + iTemplen = iRealsize - (mng_int32)(pANG->iNumframes * iSize); + + do + { + if (iTemplen > pData->iRowmax) /* get a pixel-row from the temp buffer */ + { + MNG_COPY (pData->pWorkrow, pTemp, pData->iRowmax); + } + else + { + MNG_COPY (pData->pWorkrow, pTemp, iTemplen); + } + + { /* image not completed yet ? */ + if (pData->iRow < (mng_int32)pData->iDataheight) + { +#ifdef MNG_NO_1_2_4BIT_SUPPORT + if (pData->iPNGdepth == 1) + { + /* Inflate Workrow to 8-bit */ + mng_int32 iX; + mng_uint8p pSrc = pData->pWorkrow+1; + mng_uint8p pDest = pSrc + pData->iRowsize - (pData->iRowsize+7)/8; + + for (iX = ((pData->iRowsize+7)/8) ; iX > 0 ; iX--) + *pDest++ = *pSrc++; + + pDest = pData->pWorkrow+1; + pSrc = pDest + pData->iRowsize - (pData->iRowsize+7)/8; + for (iX = pData->iRowsize; ;) + { + *pDest++ = (((*pSrc)>>7)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>6)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>5)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>4)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>3)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>2)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>1)&1); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc) )&1); + if (iX-- <= 0) + break; + pSrc++; + } + } + else if (pData->iPNGdepth == 2) + { + /* Inflate Workrow to 8-bit */ + mng_int32 iX; + mng_uint8p pSrc = pData->pWorkrow+1; + mng_uint8p pDest = pSrc + pData->iRowsize - (2*pData->iRowsize+7)/8; + + for (iX = ((2*pData->iRowsize+7)/8) ; iX > 0 ; iX--) + *pDest++ = *pSrc++; + + pDest = pData->pWorkrow+1; + pSrc = pDest + pData->iRowsize - (2*pData->iRowsize+7)/8; + for (iX = pData->iRowsize; ;) + { + *pDest++ = (((*pSrc)>>6)&3); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>4)&3); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc)>>2)&3); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc) )&3); + if (iX-- <= 0) + break; + pSrc++; + } + } + else if (pData->iPNGdepth == 4) + { + /* Inflate Workrow to 8-bit */ + mng_int32 iX; + mng_uint8p pSrc = pData->pWorkrow+1; + mng_uint8p pDest = pSrc + pData->iRowsize - (4*pData->iRowsize+7)/8; + + for (iX = ((4*pData->iRowsize+7)/8) ; iX > 0 ; iX--) + *pDest++ = *pSrc++; + + pDest = pData->pWorkrow+1; + pSrc = pDest + pData->iRowsize - (4*pData->iRowsize+7)/8; + for (iX = pData->iRowsize; ;) + { + *pDest++ = (((*pSrc)>>4)&0x0f); + if (iX-- <= 0) + break; + *pDest++ = (((*pSrc) )&0x0f); + if (iX-- <= 0) + break; + pSrc++; + } + } + if (pData->iPNGdepth < 8 && pData->iColortype == 0) + { + /* Expand samples to 8-bit by LBR */ + mng_int32 iX; + mng_uint8p pSrc = pData->pWorkrow+1; + mng_uint8 multiplier[]={0,255,85,0,17,0,0,0,1}; + + for (iX = pData->iRowsize; iX > 0; iX--) + *pSrc++ *= multiplier[pData->iPNGdepth]; + } +#endif +#ifdef MNG_NO_16BIT_SUPPORT + if (pData->iPNGdepth > 8) + { + /* Reduce Workrow to 8-bit */ + mng_int32 iX; + mng_uint8p pSrc = pData->pWorkrow+1; + mng_uint8p pDest = pSrc; + + for (iX = pData->iRowsize; iX > 0; iX--) + { + *pDest = *pSrc; + pDest++; + pSrc+=2; + } + } +#endif + +#ifdef FILTER192 /* has leveling info ? */ + if (pData->iFilterofs == MNG_FILTER_DIFFERING) + iRetcode = init_rowdiffering (pData); + else +#endif + iRetcode = MNG_NOERROR; + /* filter the row if necessary */ + if ((!iRetcode) && (pData->iFilterofs < pData->iPixelofs ) && + (*(pData->pWorkrow + pData->iFilterofs)) ) + iRetcode = mng_filter_a_row (pData); + + /* additional leveling/differing ? */ + if ((!iRetcode) && (pData->fDifferrow)) + { + iRetcode = ((mng_differrow)pData->fDifferrow) (pData); + + pSwap = pData->pWorkrow; + pData->pWorkrow = pData->pPrevrow; + pData->pPrevrow = pSwap; /* make sure we're processing the right data */ + } + + if (!iRetcode) + { + { /* process this row */ + if ((!iRetcode) && (pData->fProcessrow)) + iRetcode = ((mng_processrow)pData->fProcessrow) (pData); + /* store in object ? */ + if ((!iRetcode) && (pData->fStorerow)) + iRetcode = ((mng_storerow)pData->fStorerow) (pData); + } + } + + if (iRetcode) /* on error bail out */ + { + MNG_FREEX (pData, pBuf, iBufsize); + MNG_ERROR (pData, iRetcode); + } + + if (!pData->fDifferrow) /* swap row-pointers */ + { + pSwap = pData->pWorkrow; + pData->pWorkrow = pData->pPrevrow; + pData->pPrevrow = pSwap; /* so prev points to the processed row! */ + } + /* adjust variables for next row */ + iRetcode = mng_next_row (pData); + + if (iRetcode) /* on error bail out */ + { + MNG_FREEX (pData, pBuf, iBufsize); + MNG_ERROR (pData, iRetcode); + } + } + } + + pTemp += pData->iRowmax; + iTemplen -= pData->iRowmax; + } /* until some error or EOI + or all pixels received */ + while ( (iTemplen > 0) && + ( (pData->iRow < (mng_int32)pData->iDataheight) || + ( (pData->iPass >= 0) && (pData->iPass < 7) ) ) ); + + mng_cleanup_rowproc (pData); /* cleanup row processing buffers !! */ + + /* restore saved work-parms */ + pData->iDatawidth = iSavedatawidth; + pData->iDataheight = iSavedataheight; + + pData->fInitrowproc = fSaveinitrowproc; + pData->fDisplayrow = fSavestorerow; + pData->fProcessrow = fSaveprocessrow; + pData->fDifferrow = fSavedifferrow; + pData->pStoreobj = fSavestoreobj; + pData->pStorebuf = fSavestorebuf; + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->ePng_imgtype = eSavepngimgtype; +#endif + + pData->iInterlace = iSaveinterlace; + pData->iPass = iSavepass; + pData->iRow = iSaverow; + pData->iRowinc = iSaverowinc; + pData->iCol = iSavecol; + pData->iColinc = iSavecolinc; + pData->iRowsamples = iSaverowsamples; + pData->iSamplemul = iSavesamplemul; + pData->iSampleofs = iSavesampleofs; + pData->iSamplediv = iSavesamplediv; + pData->iRowsize = iSaverowsize; + pData->iRowmax = iSaverowmax; + pData->iFilterofs = iSavefilterofs; + pData->iPixelofs = iSavepixelofs; + pData->iLevel0 = iSavelevel0; + pData->iLevel1 = iSavelevel1; + pData->iLevel2 = iSavelevel2; + pData->iLevel3 = iSavelevel3; + pData->pWorkrow = pSaveworkrow; + pData->pPrevrow = pSaveprevrow; + pData->pRGBArow = pSaverGBArow; + pData->bIsRGBA16 = bSaveisRGBA16; + pData->bIsOpaque = bSaveisOpaque; + pData->iFilterbpp = iSavefilterbpp; + pData->iDestl = iSavedestl; + pData->iDestt = iSavedestt; + pData->iDestr = iSavedestr; + pData->iDestb = iSavedestb; + pData->iSourcel = iSavesourcel; + pData->iSourcet = iSavesourcet; + pData->iSourcer = iSavesourcer; + pData->iSourceb = iSavesourceb; + + /* create the animation directives ! */ + pProcess = (mng_processobject)pANG->sHeader.fProcess; + iRetcode = pProcess (pData, (mng_objectp)pData->pANG); + if (iRetcode) + return iRetcode; + +#endif /* MNG_SUPPORT_DISPLAY */ + + MNG_FREE (pData, pBuf, iBufsize); /* always free the temp buffer ! */ + } + + *piRawlen = 0; + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +MNG_C_SPECIALFUNC (mng_special_adat) +{ + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +MNG_C_SPECIALFUNC (mng_special_unknown) +{ + /* critical chunk ? */ + if ((((mng_uint32)pData->iChunkname & 0x20000000) == 0) +#ifdef MNG_SKIPCHUNK_SAVE + && (pData->iChunkname != MNG_UINT_SAVE) +#endif +#ifdef MNG_SKIPCHUNK_SEEK + && (pData->iChunkname != MNG_UINT_SEEK) +#endif +#ifdef MNG_SKIPCHUNK_DBYK + && (pData->iChunkname != MNG_UINT_DBYK) +#endif +#ifdef MNG_SKIPCHUNK_ORDR + && (pData->iChunkname != MNG_UINT_ORDR) +#endif + ) + MNG_ERROR (pData, MNG_UNKNOWNCRITICAL); + + if (pData->fProcessunknown) /* let the app handle it ? */ + { + mng_bool bOke = pData->fProcessunknown ((mng_handle)pData, pData->iChunkname, + ((mng_unknown_chunkp)pChunk)->iDatasize, + ((mng_unknown_chunkp)pChunk)->pData); + if (!bOke) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + + return MNG_NOERROR; /* done */ +} + +/* ************************************************************************** */ + +#endif /* MNG_INCLUDE_READ_PROCS || MNG_INCLUDE_WRITE_PROCS */ +#endif /* MNG_OPTIMIZE_CHUNKREADER */ + +/* ************************************************************************** */ +/* * end of file * */ +/* ************************************************************************** */ + + + + + |