/* ************************************************************************** */ /* * For conditions of distribution and use, * */ /* * see copyright notice in libmng.h * */ /* ************************************************************************** */ /* * * */ /* * project : libmng * */ /* * file : libmng_error.c copyright (c) 2000 G.Juyn * */ /* * version : 1.0.2 * */ /* * * */ /* * purpose : Error routines (implementation) * */ /* * * */ /* * author : G.Juyn * */ /* * web : http://www.3-t.com * */ /* * email : mailto:info@3-t.com * */ /* * * */ /* * 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 - 1/18/2001 - G.Juyn * */ /* * - added errorcode for MAGN methods * */ /* * * */ /* * 1.0.2 - 06/23/2001 - G.Juyn * */ /* * - added optimization option for MNG-video playback * */ /* * * */ /* ************************************************************************** */ #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_error_entry 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"}, {MNG_JPEGERROR, "ijgsrc6b encountered an error"}, {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"}, {MNG_INVDELTATYPE, "The delta_type is invalid"}, {MNG_INVALIDINDEX, "Index-value out of bounds"}, {MNG_TOOMUCHJDAT, "Too much data in JDAT chunk(s)"}, {MNG_JPEGPARMSERR, "JHDR parameters & JFIF-data do not match"}, {MNG_INVFILLMETHOD, "The fill_method is invalid"}, {MNG_OBJNOTCONCRETE, "Target object for DHDR must be concrete"}, {MNG_TARGETNOALPHA, "Target object must have alpha-channel"}, {MNG_MNGTOOCOMPLEX, "MHDR simplicity indicates unsupported feature(s)"}, {MNG_UNKNOWNCRITICAL, "Unknown critical chunk encountered"}, {MNG_UNSUPPORTEDNEED, "Requested nEED resources are not supported"}, {MNG_INVALIDDELTA, "The delta operation is invalid (mismatched color_types?)"}, {MNG_INVALIDMETHOD, "Method is invalid"}, {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 pData->zErrortext = 0; #endif /* mng_error_telltale */ 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 != 0) { 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_FALSE; /* automatic failure */ } /* ************************************************************************** */ /* * end of file * */ /* ************************************************************************** */