files/Source/LibMNG/libmng_error.c - free_image - Git at Google

 /* ************************************************************************** */
 /* *             For conditions of distribution and use,                    * */
 /* *                see copyright notice in libmng.h                        * */
 /* ************************************************************************** */
 /* *                                                                        * */
 /* * project   : libmng                                                     * */
 /* * file      : libmng_error.c            copyright (c) 2000-2007 G.Juyn   * */
 /* * version   : 1.0.10                                                     * */
 /* *                                                                        * */
 /* * purpose   : Error routines (implementation)                            * */
 /* *                                                                        * */
 /* * author    : G.Juyn                                                     * */
 /* *                                                                        * */
 /* * comment   : implementation of the general error handling routines      * */
 /* *                                                                        * */
 /* * changes   : 0.5.1 - 05/08/2000 - G.Juyn                                * */
 /* *             - changed strict-ANSI stuff                                * */
 /* *                                                                        * */
 /* *             0.5.2 - 05/23/2000 - G.Juyn                                * */
 /* *             - added error telltaling                                   * */
 /* *             0.5.2 - 05/30/2000 - G.Juyn                                * */
 /* *             - added errorstrings for delta-image processing            * */
 /* *             0.5.2 - 05/31/2000 - G.Juyn                                * */
 /* *             - fixed up punctuation (contributed by Tim Rowley)         * */
 /* *             0.5.2 - 06/06/2000 - G.Juyn                                * */
 /* *             - added errorstring for delayed buffer-processing          * */
 /* *                                                                        * */
 /* *             0.9.1 - 07/06/2000 - G.Juyn                                * */
 /* *             - added MNG_NEEDTIMERWAIT errorstring                      * */
 /* *             0.9.1 - 07/15/2000 - G.Juyn                                * */
 /* *             - added NEEDSECTIONWAIT errorstring                        * */
 /* *             - added macro + routine to set returncode without          * */
 /* *               calling error callback                                   * */
 /* *             0.9.1 - 07/19/2000 - G.Juyn                                * */
 /* *             - added errorstring for updatemngheader if not a MNG       * */
 /* *                                                                        * */
 /* *             0.9.2 - 08/05/2000 - G.Juyn                                * */
 /* *             - changed file-prefixes                                    * */
 /* *                                                                        * */
 /* *             0.9.3 - 08/09/2000 - G.Juyn                                * */
 /* *             - added check for simplicity-bits in MHDR                  * */
 /* *             0.9.3 - 10/11/2000 - G.Juyn                                * */
 /* *             - fixed processing of unknown critical chunks              * */
 /* *             - added support for nEED                                   * */
 /* *             0.9.3 - 10/20/2000 - G.Juyn                                * */
 /* *             - added errorcode for delayed delta-processing             * */
 /* *                                                                        * */
 /* *             0.9.4 - 01/18/2001 - G.Juyn                                * */
 /* *             - added errorcode for MAGN methods                         * */
 /* *                                                                        * */
 /* *             1.0.2 - 06/23/2001 - G.Juyn                                * */
 /* *             - added optimization option for MNG-video playback         * */
 /* *                                                                        * */
 /* *             1.0.5 - 07/04/2002 - G.Juyn                                * */
 /* *             - added errorcode for extreme chunk-sizes                  * */
 /* *             1.0.5 - 08/15/2002 - G.Juyn                                * */
 /* *             - completed delta-image support                            * */
 /* *             1.0.5 - 08/19/2002 - G.Juyn                                * */
 /* *             - B597134 - libmng pollutes the linker namespace           * */
 /* *             1.0.5 - 09/14/2002 - G.Juyn                                * */
 /* *             - added event handling for dynamic MNG                     * */
 /* *             1.0.5 - 09/15/2002 - G.Juyn                                * */
 /* *             - fixed LOOP iteration=0 special case                      * */
 /* *             1.0.5 - 09/19/2002 - G.Juyn                                * */
 /* *             - warnings are ignored by default now!                     * */
 /* *             1.0.5 - 09/20/2002 - G.Juyn                                * */
 /* *             - added support for PAST                                   * */
 /* *             1.0.5 - 10/07/2002 - G.Juyn                                * */
 /* *             - added check for TERM placement during create/write       * */
 /* *                                                                        * */
 /* *             1.0.6 - 07/07/2003 - G. R-P                                * */
 /* *             - added MNG_SKIPCHUNK_CHNK, MNG_NO_DELTA_PNG reductions.   * */
 /* *             - skipped more code when MNG_INCLUDE_JNG is not enabled.   * */
 /* *             1.0.6 - 07/29/2003 - G.R-P                                 * */
 /* *             - added conditional around evNT chunk support              * */
 /* *                                                                        * */
 /* *             1.0.7 - 03/24/2004 - G.R-P                                 * */
 /* *             - fixed typo on SKIPCHUNK_evNT (->PAST)                    * */
 /* *                                                                        * */
 /* *             1.0.9 - 12/20/2004 - G.Juyn                                * */
 /* *             - cleaned up macro-invocations (thanks to D. Airlie)       * */
 /* *                                                                        * */
 /* *             1.0.10 - 04/08/2007 - G.Juyn                               * */
 /* *             - added support for mPNG proposal                          * */
 /* *                                                                        * */
 /* ************************************************************************** */

 #include "libmng.h"
 #include "libmng_data.h"
 #include "libmng_error.h"
 #include "libmng_trace.h"
 #ifdef __BORLANDC__
 #pragma hdrstop
 #endif

 #if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
 #pragma option -A                      /* force ANSI-C */
 #endif

 /* ************************************************************************** */

 #ifdef MNG_INCLUDE_ERROR_STRINGS
 MNG_LOCAL mng_error_entry const error_table [] =
   {
     {MNG_NOERROR,          "No error"},
     {MNG_OUTOFMEMORY,      "Out of memory"},
     {MNG_INVALIDHANDLE,    "The handle is invalid"},
     {MNG_NOCALLBACK,       "A required callback is not defined"},
     {MNG_UNEXPECTEDEOF,    "Encountered unexpected end-of-file"},
     {MNG_ZLIBERROR,        "zlib encountered an error"},
 #ifdef MNG_INCLUDE_JNG
     {MNG_JPEGERROR,        "ijgsrc6b encountered an error"},
 #endif
     {MNG_LCMSERROR,        "lcms encountered an error"},
     {MNG_NOOUTPUTPROFILE,  "No output-profile defined for CMS"},
     {MNG_NOSRGBPROFILE,    "No sRGB-profile defined for CMS"},
     {MNG_BUFOVERFLOW,      "Internal buffer-overflow"},
     {MNG_FUNCTIONINVALID,  "Function is invalid at this point"},
     {MNG_OUTPUTERROR,      "Writing was unsuccessful; disk full?"},
     {MNG_JPEGBUFTOOSMALL,  "Internal buffer for JPEG processing too small"},
     {MNG_NEEDMOREDATA,     "Reading suspended; waiting for I/O to catch up"},
     {MNG_NEEDTIMERWAIT,    "Timer suspension; normal animation delay"},
     {MNG_NEEDSECTIONWAIT,  "SEEK suspension; application decides"},
     {MNG_LOOPWITHCACHEOFF, "LOOP encountered when playback cache is turned off"},

     {MNG_APPIOERROR,       "Application signalled I/O error"},
     {MNG_APPTIMERERROR,    "Application signalled timing error"},
     {MNG_APPCMSERROR,      "Application signalled CMS error"},
     {MNG_APPMISCERROR,     "Application signalled an error"},
     {MNG_APPTRACEABORT,    "Application signalled error during trace-callback"},

     {MNG_INTERNALERROR,    "Internal error in libmng"},

     {MNG_INVALIDSIG,       "The signature is invalid"},
     {MNG_INVALIDCRC,       "The CRC for this chunk is invalid"},
     {MNG_INVALIDLENGTH,    "Chunk-length is invalid"},
     {MNG_SEQUENCEERROR,    "Chunk out of sequence"},
     {MNG_CHUNKNOTALLOWED,  "Chunk not allowed at this point"},
     {MNG_MULTIPLEERROR,    "Chunk cannot occur multiple times"},
     {MNG_PLTEMISSING,      "Missing PLTE chunk"},
     {MNG_IDATMISSING,      "Missing IDAT chunk(s)"},
     {MNG_CANNOTBEEMPTY,    "Chunk cannot be empty"},
     {MNG_GLOBALLENGTHERR,  "Global data length invalid"},
     {MNG_INVALIDBITDEPTH,  "The bit_depth is invalid"},
     {MNG_INVALIDCOLORTYPE, "The color_type is invalid"},
     {MNG_INVALIDCOMPRESS,  "The compression_method is invalid"},
     {MNG_INVALIDFILTER,    "The filter_method or filter_type is invalid"},
     {MNG_INVALIDINTERLACE, "The interlace_method is invalid"},
     {MNG_NOTENOUGHIDAT,    "There is not enough data in the IDAT chunk(s)"},
     {MNG_PLTEINDEXERROR,   "Palette-index out of bounds"},
     {MNG_NULLNOTFOUND,     "NULL separator not found"},
     {MNG_KEYWORDNULL,      "Keyword cannot be zero-length"},
     {MNG_OBJECTUNKNOWN,    "Object does not exist"},
     {MNG_OBJECTEXISTS,     "Object already exists"},
     {MNG_TOOMUCHIDAT,      "Too much data in IDAT chunk(s)"},
     {MNG_INVSAMPLEDEPTH,   "The sample_depth is invalid"},
     {MNG_INVOFFSETSIZE,    "The offset_type is invalid"},
     {MNG_INVENTRYTYPE,     "The entry_type is invalid"},
     {MNG_ENDWITHNULL,      "Chunk must not end with NULL byte"},
     {MNG_INVIMAGETYPE,     "The image_type is invalid"},
 #ifndef MNG_NO_DELTA_PNG
     {MNG_INVDELTATYPE,     "The delta_type is invalid"},
 #endif
     {MNG_INVALIDINDEX,     "Index-value out of bounds"},
 #ifdef MNG_INCLUDE_JNG
     {MNG_TOOMUCHJDAT,      "Too much data in JDAT chunk(s)"},
     {MNG_JPEGPARMSERR,     "JHDR parameters & JFIF-data do not match"},
 #endif
     {MNG_INVFILLMETHOD,    "The fill_method is invalid"},
 #ifndef MNG_NO_DELTA_PNG
     {MNG_OBJNOTCONCRETE,   "Target object for DHDR must be concrete"},
 #endif
     {MNG_TARGETNOALPHA,    "Target object must have alpha-channel"},
     {MNG_MNGTOOCOMPLEX,    "MHDR simplicity indicates unsupported feature(s)"},
     {MNG_UNKNOWNCRITICAL,  "Unknown critical chunk encountered"},
 #ifndef MNG_SKIPCHUNK_nEED
     {MNG_UNSUPPORTEDNEED,  "Requested nEED resources are not supported"},
 #endif
     {MNG_INVALIDDELTA,     "The delta operation is invalid (mismatched color_types?)"},
     {MNG_INVALIDMETHOD,    "Method is invalid"},
     {MNG_IMPROBABLELENGTH, "Chunklength is incredibly large"},
     {MNG_INVALIDBLOCK,     "Delta block width and or height invalid"},
     {MNG_INVALIDEVENT,     "Event type is invalid"},
     {MNG_INVALIDMASK,      "Mask type is invalid"},
     {MNG_NOMATCHINGLOOP,   "ENDL without matching LOOP"},
 #ifndef MNG_SKIPCHUNK_evNT
     {MNG_SEEKNOTFOUND,     "evNT points to unknown SEEK"},
 #endif
 #ifndef MNG_SKIPCHUNK_PAST
     {MNG_OBJNOTABSTRACT,   "Destination object for PAST must be abstract"},
 #endif
     {MNG_TERMSEQERROR,     "TERM misplaced during creation of MNG stream"},
     {MNG_INVALIDFIELDVAL,  "invalid fieldvalue (generic)"},
     {MNG_INVALIDWIDTH,     "invalid frame/image width"},
     {MNG_INVALIDHEIGHT,    "invalid frame/image height"},

     {MNG_INVALIDCNVSTYLE,  "Canvas_style is invalid"},
     {MNG_WRONGCHUNK,       "Attempt to access the wrong chunk"},
     {MNG_INVALIDENTRYIX,   "Attempt to access an non-existing entry"},
     {MNG_NOHEADER,         "No valid header-chunk"},
     {MNG_NOCORRCHUNK,      "Parent chunk not found"},
     {MNG_NOMHDR,           "No MNG header (MHDR) found"},

     {MNG_IMAGETOOLARGE,    "Image is larger than defined maximum"},
     {MNG_NOTANANIMATION,   "Image is not an animation"},
     {MNG_FRAMENRTOOHIGH,   "Framenr out of bounds"},
     {MNG_LAYERNRTOOHIGH,   "Layernr out of bounds"},
     {MNG_PLAYTIMETOOHIGH,  "Playtime out of bounds"},
     {MNG_FNNOTIMPLEMENTED, "Function not yet implemented"},
     {MNG_IMAGEFROZEN,      "Image is frozen"},

     {MNG_LCMS_NOHANDLE,    "Handle could not be initialized"},
     {MNG_LCMS_NOMEM,       "No memory for gamma-table(s)"},
     {MNG_LCMS_NOTRANS,     "Transformation could not be initialized"}
   };
 #endif /* MNG_INCLUDE_ERROR_STRINGS */

 /* ************************************************************************** */

 mng_bool mng_store_error (mng_datap   pData,
                           mng_retcode iError,
                           mng_retcode iExtra1,
                           mng_retcode iExtra2)
 {
 #ifdef MNG_SUPPORT_TRACE
   MNG_TRACEB (pData, MNG_FN_STORE_ERROR, MNG_LC_START);
 #endif

   if (pData != 0)
   {
     pData->iErrorcode = iError;        /* save also for getlasterror */
     pData->iErrorx1   = iExtra1;
     pData->iErrorx2   = iExtra2;

 #ifdef MNG_INCLUDE_ERROR_STRINGS
     {                                  /* binary search variables */
       mng_int32        iTop, iLower, iUpper, iMiddle;
       mng_error_entryp pEntry;         /* pointer to found entry */
                                        /* determine max index of table */
       iTop = (sizeof (error_table) / sizeof (error_table [0])) - 1;

       iLower  = 0;                     /* initialize binary search */
       iMiddle = iTop >> 1;             /* start in the middle */
       iUpper  = iTop;
       pEntry  = 0;                     /* no goods yet! */

       do                               /* the binary search itself */
         {
           if (error_table [iMiddle].iError < iError)
             iLower = iMiddle + 1;
           else if (error_table [iMiddle].iError > iError)
             iUpper = iMiddle - 1;
           else
           {
             pEntry = &error_table [iMiddle];
             break;
           }

           iMiddle = (iLower + iUpper) >> 1;
         }
       while (iLower <= iUpper);

       if (pEntry)                      /* found it ? */
         pData->zErrortext = pEntry->zErrortext;
       else
         pData->zErrortext = "Unknown error";
       }
 #else /* MNG_INCLUDE_ERROR_STRINGS */
     pData->zErrortext = 0;
 #endif /* MNG_INCLUDE_ERROR_STRINGS */

     if (iError == 0)                   /* no error is not severe ! */
     {
       pData->iSeverity = 0;
     }
     else
     {
       switch (iError&0x3C00)           /* determine the severity */
       {
         case 0x0800 : { pData->iSeverity = 5; break; }
         case 0x1000 : { pData->iSeverity = 2; break; }
         case 0x2000 : { pData->iSeverity = 1; break; }
         default     : { pData->iSeverity = 9; }
       }
     }
   }

 #ifdef MNG_SUPPORT_TRACE
   MNG_TRACEB (pData, MNG_FN_STORE_ERROR, MNG_LC_END);
 #endif

   return MNG_TRUE;
 }

 /* ************************************************************************** */

 mng_bool mng_process_error (mng_datap   pData,
                             mng_retcode iError,
                             mng_retcode iExtra1,
                             mng_retcode iExtra2)
 {
 #ifdef MNG_SUPPORT_TRACE
   MNG_TRACEB (pData, MNG_FN_PROCESS_ERROR, MNG_LC_START);
 #endif

   mng_store_error (pData, iError, iExtra1, iExtra2);

   if ((pData != MNG_NULL) && (pData->iMagic == MNG_MAGIC))
   {
     if (pData->fErrorproc)             /* callback defined ? */
       return pData->fErrorproc (((mng_handle)pData), iError, pData->iSeverity,
                                 pData->iChunkname, pData->iChunkseq,
                                 pData->iErrorx1, pData->iErrorx2, pData->zErrortext);
   }

 #ifdef MNG_SUPPORT_TRACE
   MNG_TRACEB (pData, MNG_FN_PROCESS_ERROR, MNG_LC_END);
 #endif

   return MNG_TRUE;                     /* warnings are ignored by default ! */
 }

 /* ************************************************************************** */
 /* * end of file                                                            * */
 /* ************************************************************************** */
	/* ************************************************************************** */
	/* * For conditions of distribution and use, * */
	/* * see copyright notice in libmng.h * */
	/* ************************************************************************** */
	/* * * */
	/* * project : libmng * */
	/* * file : libmng_error.c copyright (c) 2000-2007 G.Juyn * */
	/* * version : 1.0.10 * */
	/* * * */
	/* * purpose : Error routines (implementation) * */
	/* * * */
	/* * author : G.Juyn * */
	/* * * */
	/* * comment : implementation of the general error handling routines * */
	/* * * */
	/* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */
	/* * - changed strict-ANSI stuff * */
	/* * * */
	/* * 0.5.2 - 05/23/2000 - G.Juyn * */
	/* * - added error telltaling * */
	/* * 0.5.2 - 05/30/2000 - G.Juyn * */
	/* * - added errorstrings for delta-image processing * */
	/* * 0.5.2 - 05/31/2000 - G.Juyn * */
	/* * - fixed up punctuation (contributed by Tim Rowley) * */
	/* * 0.5.2 - 06/06/2000 - G.Juyn * */
	/* * - added errorstring for delayed buffer-processing * */
	/* * * */
	/* * 0.9.1 - 07/06/2000 - G.Juyn * */
	/* * - added MNG_NEEDTIMERWAIT errorstring * */
	/* * 0.9.1 - 07/15/2000 - G.Juyn * */
	/* * - added NEEDSECTIONWAIT errorstring * */
	/* * - added macro + routine to set returncode without * */
	/* * calling error callback * */
	/* * 0.9.1 - 07/19/2000 - G.Juyn * */
	/* * - added errorstring for updatemngheader if not a MNG * */
	/* * * */
	/* * 0.9.2 - 08/05/2000 - G.Juyn * */
	/* * - changed file-prefixes * */
	/* * * */
	/* * 0.9.3 - 08/09/2000 - G.Juyn * */
	/* * - added check for simplicity-bits in MHDR * */
	/* * 0.9.3 - 10/11/2000 - G.Juyn * */
	/* * - fixed processing of unknown critical chunks * */
	/* * - added support for nEED * */
	/* * 0.9.3 - 10/20/2000 - G.Juyn * */
	/* * - added errorcode for delayed delta-processing * */
	/* * * */
	/* * 0.9.4 - 01/18/2001 - G.Juyn * */
	/* * - added errorcode for MAGN methods * */
	/* * * */
	/* * 1.0.2 - 06/23/2001 - G.Juyn * */
	/* * - added optimization option for MNG-video playback * */
	/* * * */
	/* * 1.0.5 - 07/04/2002 - G.Juyn * */
	/* * - added errorcode for extreme chunk-sizes * */
	/* * 1.0.5 - 08/15/2002 - G.Juyn * */
	/* * - completed delta-image support * */
	/* * 1.0.5 - 08/19/2002 - G.Juyn * */
	/* * - B597134 - libmng pollutes the linker namespace * */
	/* * 1.0.5 - 09/14/2002 - G.Juyn * */
	/* * - added event handling for dynamic MNG * */
	/* * 1.0.5 - 09/15/2002 - G.Juyn * */
	/* * - fixed LOOP iteration=0 special case * */
	/* * 1.0.5 - 09/19/2002 - G.Juyn * */
	/* * - warnings are ignored by default now! * */
	/* * 1.0.5 - 09/20/2002 - G.Juyn * */
	/* * - added support for PAST * */
	/* * 1.0.5 - 10/07/2002 - G.Juyn * */
	/* * - added check for TERM placement during create/write * */
	/* * * */
	/* * 1.0.6 - 07/07/2003 - G. R-P * */
	/* * - added MNG_SKIPCHUNK_CHNK, MNG_NO_DELTA_PNG reductions. * */
	/* * - skipped more code when MNG_INCLUDE_JNG is not enabled. * */
	/* * 1.0.6 - 07/29/2003 - G.R-P * */
	/* * - added conditional around evNT chunk support * */
	/* * * */
	/* * 1.0.7 - 03/24/2004 - G.R-P * */
	/* * - fixed typo on SKIPCHUNK_evNT (->PAST) * */
	/* * * */
	/* * 1.0.9 - 12/20/2004 - G.Juyn * */
	/* * - cleaned up macro-invocations (thanks to D. Airlie) * */
	/* * * */
	/* * 1.0.10 - 04/08/2007 - G.Juyn * */
	/* * - added support for mPNG proposal * */
	/* * * */
	/* ************************************************************************** */

	#include "libmng.h"
	#include "libmng_data.h"
	#include "libmng_error.h"
	#include "libmng_trace.h"
	#ifdef __BORLANDC__
	#pragma hdrstop
	#endif

	#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
	#pragma option -A /* force ANSI-C */
	#endif

	/* ************************************************************************** */

	#ifdef MNG_INCLUDE_ERROR_STRINGS
	MNG_LOCAL mng_error_entry const error_table [] =
	{
	{MNG_NOERROR, "No error"},
	{MNG_OUTOFMEMORY, "Out of memory"},
	{MNG_INVALIDHANDLE, "The handle is invalid"},
	{MNG_NOCALLBACK, "A required callback is not defined"},
	{MNG_UNEXPECTEDEOF, "Encountered unexpected end-of-file"},
	{MNG_ZLIBERROR, "zlib encountered an error"},
	#ifdef MNG_INCLUDE_JNG
	{MNG_JPEGERROR, "ijgsrc6b encountered an error"},
	#endif
	{MNG_LCMSERROR, "lcms encountered an error"},
	{MNG_NOOUTPUTPROFILE, "No output-profile defined for CMS"},
	{MNG_NOSRGBPROFILE, "No sRGB-profile defined for CMS"},
	{MNG_BUFOVERFLOW, "Internal buffer-overflow"},
	{MNG_FUNCTIONINVALID, "Function is invalid at this point"},
	{MNG_OUTPUTERROR, "Writing was unsuccessful; disk full?"},
	{MNG_JPEGBUFTOOSMALL, "Internal buffer for JPEG processing too small"},
	{MNG_NEEDMOREDATA, "Reading suspended; waiting for I/O to catch up"},
	{MNG_NEEDTIMERWAIT, "Timer suspension; normal animation delay"},
	{MNG_NEEDSECTIONWAIT, "SEEK suspension; application decides"},
	{MNG_LOOPWITHCACHEOFF, "LOOP encountered when playback cache is turned off"},

	{MNG_APPIOERROR, "Application signalled I/O error"},
	{MNG_APPTIMERERROR, "Application signalled timing error"},
	{MNG_APPCMSERROR, "Application signalled CMS error"},
	{MNG_APPMISCERROR, "Application signalled an error"},
	{MNG_APPTRACEABORT, "Application signalled error during trace-callback"},

	{MNG_INTERNALERROR, "Internal error in libmng"},

	{MNG_INVALIDSIG, "The signature is invalid"},
	{MNG_INVALIDCRC, "The CRC for this chunk is invalid"},
	{MNG_INVALIDLENGTH, "Chunk-length is invalid"},
	{MNG_SEQUENCEERROR, "Chunk out of sequence"},
	{MNG_CHUNKNOTALLOWED, "Chunk not allowed at this point"},
	{MNG_MULTIPLEERROR, "Chunk cannot occur multiple times"},
	{MNG_PLTEMISSING, "Missing PLTE chunk"},
	{MNG_IDATMISSING, "Missing IDAT chunk(s)"},
	{MNG_CANNOTBEEMPTY, "Chunk cannot be empty"},
	{MNG_GLOBALLENGTHERR, "Global data length invalid"},
	{MNG_INVALIDBITDEPTH, "The bit_depth is invalid"},
	{MNG_INVALIDCOLORTYPE, "The color_type is invalid"},
	{MNG_INVALIDCOMPRESS, "The compression_method is invalid"},
	{MNG_INVALIDFILTER, "The filter_method or filter_type is invalid"},
	{MNG_INVALIDINTERLACE, "The interlace_method is invalid"},
	{MNG_NOTENOUGHIDAT, "There is not enough data in the IDAT chunk(s)"},
	{MNG_PLTEINDEXERROR, "Palette-index out of bounds"},
	{MNG_NULLNOTFOUND, "NULL separator not found"},
	{MNG_KEYWORDNULL, "Keyword cannot be zero-length"},
	{MNG_OBJECTUNKNOWN, "Object does not exist"},
	{MNG_OBJECTEXISTS, "Object already exists"},
	{MNG_TOOMUCHIDAT, "Too much data in IDAT chunk(s)"},
	{MNG_INVSAMPLEDEPTH, "The sample_depth is invalid"},
	{MNG_INVOFFSETSIZE, "The offset_type is invalid"},
	{MNG_INVENTRYTYPE, "The entry_type is invalid"},
	{MNG_ENDWITHNULL, "Chunk must not end with NULL byte"},
	{MNG_INVIMAGETYPE, "The image_type is invalid"},
	#ifndef MNG_NO_DELTA_PNG
	{MNG_INVDELTATYPE, "The delta_type is invalid"},
	#endif
	{MNG_INVALIDINDEX, "Index-value out of bounds"},
	#ifdef MNG_INCLUDE_JNG
	{MNG_TOOMUCHJDAT, "Too much data in JDAT chunk(s)"},
	{MNG_JPEGPARMSERR, "JHDR parameters & JFIF-data do not match"},
	#endif
	{MNG_INVFILLMETHOD, "The fill_method is invalid"},
	#ifndef MNG_NO_DELTA_PNG
	{MNG_OBJNOTCONCRETE, "Target object for DHDR must be concrete"},
	#endif
	{MNG_TARGETNOALPHA, "Target object must have alpha-channel"},
	{MNG_MNGTOOCOMPLEX, "MHDR simplicity indicates unsupported feature(s)"},
	{MNG_UNKNOWNCRITICAL, "Unknown critical chunk encountered"},
	#ifndef MNG_SKIPCHUNK_nEED
	{MNG_UNSUPPORTEDNEED, "Requested nEED resources are not supported"},
	#endif
	{MNG_INVALIDDELTA, "The delta operation is invalid (mismatched color_types?)"},
	{MNG_INVALIDMETHOD, "Method is invalid"},
	{MNG_IMPROBABLELENGTH, "Chunklength is incredibly large"},
	{MNG_INVALIDBLOCK, "Delta block width and or height invalid"},
	{MNG_INVALIDEVENT, "Event type is invalid"},
	{MNG_INVALIDMASK, "Mask type is invalid"},
	{MNG_NOMATCHINGLOOP, "ENDL without matching LOOP"},
	#ifndef MNG_SKIPCHUNK_evNT
	{MNG_SEEKNOTFOUND, "evNT points to unknown SEEK"},
	#endif
	#ifndef MNG_SKIPCHUNK_PAST
	{MNG_OBJNOTABSTRACT, "Destination object for PAST must be abstract"},
	#endif
	{MNG_TERMSEQERROR, "TERM misplaced during creation of MNG stream"},
	{MNG_INVALIDFIELDVAL, "invalid fieldvalue (generic)"},
	{MNG_INVALIDWIDTH, "invalid frame/image width"},
	{MNG_INVALIDHEIGHT, "invalid frame/image height"},

	{MNG_INVALIDCNVSTYLE, "Canvas_style is invalid"},
	{MNG_WRONGCHUNK, "Attempt to access the wrong chunk"},
	{MNG_INVALIDENTRYIX, "Attempt to access an non-existing entry"},
	{MNG_NOHEADER, "No valid header-chunk"},
	{MNG_NOCORRCHUNK, "Parent chunk not found"},
	{MNG_NOMHDR, "No MNG header (MHDR) found"},

	{MNG_IMAGETOOLARGE, "Image is larger than defined maximum"},
	{MNG_NOTANANIMATION, "Image is not an animation"},
	{MNG_FRAMENRTOOHIGH, "Framenr out of bounds"},
	{MNG_LAYERNRTOOHIGH, "Layernr out of bounds"},
	{MNG_PLAYTIMETOOHIGH, "Playtime out of bounds"},
	{MNG_FNNOTIMPLEMENTED, "Function not yet implemented"},
	{MNG_IMAGEFROZEN, "Image is frozen"},

	{MNG_LCMS_NOHANDLE, "Handle could not be initialized"},
	{MNG_LCMS_NOMEM, "No memory for gamma-table(s)"},
	{MNG_LCMS_NOTRANS, "Transformation could not be initialized"}
	};
	#endif /* MNG_INCLUDE_ERROR_STRINGS */

	/* ************************************************************************** */

	mng_bool mng_store_error (mng_datap pData,
	mng_retcode iError,
	mng_retcode iExtra1,
	mng_retcode iExtra2)
	{
	#ifdef MNG_SUPPORT_TRACE
	MNG_TRACEB (pData, MNG_FN_STORE_ERROR, MNG_LC_START);
	#endif

	if (pData != 0)
	{
	pData->iErrorcode = iError; /* save also for getlasterror */
	pData->iErrorx1 = iExtra1;
	pData->iErrorx2 = iExtra2;

	#ifdef MNG_INCLUDE_ERROR_STRINGS
	{ /* binary search variables */
	mng_int32 iTop, iLower, iUpper, iMiddle;
	mng_error_entryp pEntry; /* pointer to found entry */
	/* determine max index of table */
	iTop = (sizeof (error_table) / sizeof (error_table [0])) - 1;

	iLower = 0; /* initialize binary search */
	iMiddle = iTop >> 1; /* start in the middle */
	iUpper = iTop;
	pEntry = 0; /* no goods yet! */

	do /* the binary search itself */
	{
	if (error_table [iMiddle].iError < iError)
	iLower = iMiddle + 1;
	else if (error_table [iMiddle].iError > iError)
	iUpper = iMiddle - 1;
	else
	{
	pEntry = &error_table [iMiddle];
	break;
	}

	iMiddle = (iLower + iUpper) >> 1;
	}
	while (iLower <= iUpper);

	if (pEntry) /* found it ? */
	pData->zErrortext = pEntry->zErrortext;
	else
	pData->zErrortext = "Unknown error";
	}
	#else /* MNG_INCLUDE_ERROR_STRINGS */
	pData->zErrortext = 0;
	#endif /* MNG_INCLUDE_ERROR_STRINGS */

	if (iError == 0) /* no error is not severe ! */
	{
	pData->iSeverity = 0;
	}
	else
	{
	switch (iError&0x3C00) /* determine the severity */
	{
	case 0x0800 : { pData->iSeverity = 5; break; }
	case 0x1000 : { pData->iSeverity = 2; break; }
	case 0x2000 : { pData->iSeverity = 1; break; }
	default : { pData->iSeverity = 9; }
	}
	}
	}

	#ifdef MNG_SUPPORT_TRACE
	MNG_TRACEB (pData, MNG_FN_STORE_ERROR, MNG_LC_END);
	#endif

	return MNG_TRUE;
	}

	/* ************************************************************************** */

	mng_bool mng_process_error (mng_datap pData,
	mng_retcode iError,
	mng_retcode iExtra1,
	mng_retcode iExtra2)
	{
	#ifdef MNG_SUPPORT_TRACE
	MNG_TRACEB (pData, MNG_FN_PROCESS_ERROR, MNG_LC_START);
	#endif

	mng_store_error (pData, iError, iExtra1, iExtra2);

	if ((pData != MNG_NULL) && (pData->iMagic == MNG_MAGIC))
	{
	if (pData->fErrorproc) /* callback defined ? */
	return pData->fErrorproc (((mng_handle)pData), iError, pData->iSeverity,
	pData->iChunkname, pData->iChunkseq,
	pData->iErrorx1, pData->iErrorx2, pData->zErrortext);
	}

	#ifdef MNG_SUPPORT_TRACE
	MNG_TRACEB (pData, MNG_FN_PROCESS_ERROR, MNG_LC_END);
	#endif

	return MNG_TRUE; /* warnings are ignored by default ! */
	}

	/* ************************************************************************** */
	/* * end of file * */
	/* ************************************************************************** */