| 1 | /* ************************************************************************** */
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| 2 | /* * For conditions of distribution and use, * */
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| 3 | /* * see copyright notice in libmng.h * */
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| 4 | /* ************************************************************************** */
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| 5 | /* * * */
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| 6 | /* * project : libmng * */
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| 7 | /* * file : libmng_error.c copyright (c) 2000 G.Juyn * */
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| 8 | /* * version : 1.0.2 * */
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| 9 | /* * * */
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| 10 | /* * purpose : Error routines (implementation) * */
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| 11 | /* * * */
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| 12 | /* * author : G.Juyn * */
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| 13 | /* * web : http://www.3-t.com * */
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| 14 | /* * email : mailto:info@3-t.com * */
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| 15 | /* * * */
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| 16 | /* * comment : implementation of the general error handling routines * */
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| 17 | /* * * */
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| 18 | /* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */
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| 19 | /* * - changed strict-ANSI stuff * */
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| 20 | /* * * */
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| 21 | /* * 0.5.2 - 05/23/2000 - G.Juyn * */
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| 22 | /* * - added error telltaling * */
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| 23 | /* * 0.5.2 - 05/30/2000 - G.Juyn * */
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| 24 | /* * - added errorstrings for delta-image processing * */
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| 25 | /* * 0.5.2 - 05/31/2000 - G.Juyn * */
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| 26 | /* * - fixed up punctuation (contributed by Tim Rowley) * */
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| 27 | /* * 0.5.2 - 06/06/2000 - G.Juyn * */
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| 28 | /* * - added errorstring for delayed buffer-processing * */
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| 29 | /* * * */
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| 30 | /* * 0.9.1 - 07/06/2000 - G.Juyn * */
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| 31 | /* * - added MNG_NEEDTIMERWAIT errorstring * */
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| 32 | /* * 0.9.1 - 07/15/2000 - G.Juyn * */
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| 33 | /* * - added NEEDSECTIONWAIT errorstring * */
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| 34 | /* * - added macro + routine to set returncode without * */
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| 35 | /* * calling error callback * */
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| 36 | /* * 0.9.1 - 07/19/2000 - G.Juyn * */
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| 37 | /* * - added errorstring for updatemngheader if not a MNG * */
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| 38 | /* * * */
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| 39 | /* * 0.9.2 - 08/05/2000 - G.Juyn * */
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| 40 | /* * - changed file-prefixes * */
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| 41 | /* * * */
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| 42 | /* * 0.9.3 - 08/09/2000 - G.Juyn * */
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| 43 | /* * - added check for simplicity-bits in MHDR * */
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| 44 | /* * 0.9.3 - 10/11/2000 - G.Juyn * */
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| 45 | /* * - fixed processing of unknown critical chunks * */
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| 46 | /* * - added support for nEED * */
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| 47 | /* * 0.9.3 - 10/20/2000 - G.Juyn * */
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| 48 | /* * - added errorcode for delayed delta-processing * */
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| 49 | /* * * */
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| 50 | /* * 0.9.4 - 1/18/2001 - G.Juyn * */
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| 51 | /* * - added errorcode for MAGN methods * */
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| 52 | /* * * */
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| 53 | /* * 1.0.2 - 06/23/2001 - G.Juyn * */
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| 54 | /* * - added optimization option for MNG-video playback * */
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| 55 | /* * * */
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| 56 | /* ************************************************************************** */
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| 57 |
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| 58 | #include "libmng.h"
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| 59 | #include "libmng_data.h"
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| 60 | #include "libmng_error.h"
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| 61 | #include "libmng_trace.h"
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| 62 | #ifdef __BORLANDC__
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| 63 | #pragma hdrstop
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| 64 | #endif
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| 65 |
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| 66 | #if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
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| 67 | #pragma option -A /* force ANSI-C */
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| 68 | #endif
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| 69 |
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| 70 | /* ************************************************************************** */
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| 71 |
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| 72 | #ifdef MNG_INCLUDE_ERROR_STRINGS
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| 73 | mng_error_entry error_table [] =
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| 74 | {
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| 75 | {MNG_NOERROR, "No error"},
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| 76 | {MNG_OUTOFMEMORY, "Out of memory"},
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| 77 | {MNG_INVALIDHANDLE, "The handle is invalid"},
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| 78 | {MNG_NOCALLBACK, "A required callback is not defined"},
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| 79 | {MNG_UNEXPECTEDEOF, "Encountered unexpected end-of-file"},
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| 80 | {MNG_ZLIBERROR, "zlib encountered an error"},
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| 81 | {MNG_JPEGERROR, "ijgsrc6b encountered an error"},
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| 82 | {MNG_LCMSERROR, "lcms encountered an error"},
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| 83 | {MNG_NOOUTPUTPROFILE, "No output-profile defined for CMS"},
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| 84 | {MNG_NOSRGBPROFILE, "No sRGB-profile defined for CMS"},
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| 85 | {MNG_BUFOVERFLOW, "Internal buffer-overflow"},
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| 86 | {MNG_FUNCTIONINVALID, "Function is invalid at this point"},
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| 87 | {MNG_OUTPUTERROR, "Writing was unsuccessful; disk full?"},
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| 88 | {MNG_JPEGBUFTOOSMALL, "Internal buffer for JPEG processing too small"},
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| 89 | {MNG_NEEDMOREDATA, "Reading suspended; waiting for I/O to catch up"},
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| 90 | {MNG_NEEDTIMERWAIT, "Timer suspension; normal animation delay"},
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| 91 | {MNG_NEEDSECTIONWAIT, "SEEK suspension; application decides"},
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| 92 | {MNG_LOOPWITHCACHEOFF, "LOOP encountered when playback cache is turned off"},
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| 93 |
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| 94 | {MNG_APPIOERROR, "Application signalled I/O error"},
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| 95 | {MNG_APPTIMERERROR, "Application signalled timing error"},
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| 96 | {MNG_APPCMSERROR, "Application signalled CMS error"},
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| 97 | {MNG_APPMISCERROR, "Application signalled an error"},
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| 98 | {MNG_APPTRACEABORT, "Application signalled error during trace-callback"},
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| 99 |
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| 100 | {MNG_INTERNALERROR, "Internal error in libmng"},
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| 101 |
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| 102 | {MNG_INVALIDSIG, "The signature is invalid"},
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| 103 | {MNG_INVALIDCRC, "The CRC for this chunk is invalid"},
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| 104 | {MNG_INVALIDLENGTH, "Chunk-length is invalid"},
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| 105 | {MNG_SEQUENCEERROR, "Chunk out of sequence"},
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| 106 | {MNG_CHUNKNOTALLOWED, "Chunk not allowed at this point"},
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| 107 | {MNG_MULTIPLEERROR, "Chunk cannot occur multiple times"},
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| 108 | {MNG_PLTEMISSING, "Missing PLTE chunk"},
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| 109 | {MNG_IDATMISSING, "Missing IDAT chunk(s)"},
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| 110 | {MNG_CANNOTBEEMPTY, "Chunk cannot be empty"},
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| 111 | {MNG_GLOBALLENGTHERR, "Global data length invalid"},
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| 112 | {MNG_INVALIDBITDEPTH, "The bit_depth is invalid"},
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| 113 | {MNG_INVALIDCOLORTYPE, "The color_type is invalid"},
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| 114 | {MNG_INVALIDCOMPRESS, "The compression_method is invalid"},
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| 115 | {MNG_INVALIDFILTER, "The filter_method or filter_type is invalid"},
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| 116 | {MNG_INVALIDINTERLACE, "The interlace_method is invalid"},
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| 117 | {MNG_NOTENOUGHIDAT, "There is not enough data in the IDAT chunk(s)"},
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| 118 | {MNG_PLTEINDEXERROR, "Palette-index out of bounds"},
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| 119 | {MNG_NULLNOTFOUND, "NULL separator not found"},
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| 120 | {MNG_KEYWORDNULL, "Keyword cannot be zero-length"},
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| 121 | {MNG_OBJECTUNKNOWN, "Object does not exist"},
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| 122 | {MNG_OBJECTEXISTS, "Object already exists"},
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| 123 | {MNG_TOOMUCHIDAT, "Too much data in IDAT chunk(s)"},
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| 124 | {MNG_INVSAMPLEDEPTH, "The sample_depth is invalid"},
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| 125 | {MNG_INVOFFSETSIZE, "The offset_type is invalid"},
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| 126 | {MNG_INVENTRYTYPE, "The entry_type is invalid"},
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| 127 | {MNG_ENDWITHNULL, "Chunk must not end with NULL byte"},
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| 128 | {MNG_INVIMAGETYPE, "The image_type is invalid"},
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| 129 | {MNG_INVDELTATYPE, "The delta_type is invalid"},
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| 130 | {MNG_INVALIDINDEX, "Index-value out of bounds"},
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| 131 | {MNG_TOOMUCHJDAT, "Too much data in JDAT chunk(s)"},
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| 132 | {MNG_JPEGPARMSERR, "JHDR parameters & JFIF-data do not match"},
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| 133 | {MNG_INVFILLMETHOD, "The fill_method is invalid"},
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| 134 | {MNG_OBJNOTCONCRETE, "Target object for DHDR must be concrete"},
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| 135 | {MNG_TARGETNOALPHA, "Target object must have alpha-channel"},
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| 136 | {MNG_MNGTOOCOMPLEX, "MHDR simplicity indicates unsupported feature(s)"},
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| 137 | {MNG_UNKNOWNCRITICAL, "Unknown critical chunk encountered"},
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| 138 | {MNG_UNSUPPORTEDNEED, "Requested nEED resources are not supported"},
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| 139 | {MNG_INVALIDDELTA, "The delta operation is invalid (mismatched color_types?)"},
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| 140 | {MNG_INVALIDMETHOD, "Method is invalid"},
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| 141 |
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| 142 | {MNG_INVALIDCNVSTYLE, "Canvas_style is invalid"},
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| 143 | {MNG_WRONGCHUNK, "Attempt to access the wrong chunk"},
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| 144 | {MNG_INVALIDENTRYIX, "Attempt to access an non-existing entry"},
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| 145 | {MNG_NOHEADER, "No valid header-chunk"},
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| 146 | {MNG_NOCORRCHUNK, "Parent chunk not found"},
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| 147 | {MNG_NOMHDR, "No MNG header (MHDR) found"},
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| 148 |
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| 149 | {MNG_IMAGETOOLARGE, "Image is larger than defined maximum"},
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| 150 | {MNG_NOTANANIMATION, "Image is not an animation"},
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| 151 | {MNG_FRAMENRTOOHIGH, "Framenr out of bounds"},
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| 152 | {MNG_LAYERNRTOOHIGH, "Layernr out of bounds"},
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| 153 | {MNG_PLAYTIMETOOHIGH, "Playtime out of bounds"},
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| 154 | {MNG_FNNOTIMPLEMENTED, "Function not yet implemented"},
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| 155 | {MNG_IMAGEFROZEN, "Image is frozen"},
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| 156 |
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| 157 | {MNG_LCMS_NOHANDLE, "Handle could not be initialized"},
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| 158 | {MNG_LCMS_NOMEM, "No memory for gamma-table(s)"},
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| 159 | {MNG_LCMS_NOTRANS, "Transformation could not be initialized"},
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| 160 | };
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| 161 | #endif /* MNG_INCLUDE_ERROR_STRINGS */
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| 162 |
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| 163 | /* ************************************************************************** */
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| 164 |
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| 165 | mng_bool mng_store_error (mng_datap pData,
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| 166 | mng_retcode iError,
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| 167 | mng_retcode iExtra1,
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| 168 | mng_retcode iExtra2)
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| 169 | {
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| 170 | #ifdef MNG_SUPPORT_TRACE
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| 171 | MNG_TRACEB (pData, MNG_FN_STORE_ERROR, MNG_LC_START)
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| 172 | #endif
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| 173 |
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| 174 | if (pData != 0)
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| 175 | {
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| 176 | pData->iErrorcode = iError; /* save also for getlasterror */
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| 177 | pData->iErrorx1 = iExtra1;
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| 178 | pData->iErrorx2 = iExtra2;
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| 179 |
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| 180 | #ifdef MNG_INCLUDE_ERROR_STRINGS
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| 181 | { /* binary search variables */
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| 182 | mng_int32 iTop, iLower, iUpper, iMiddle;
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| 183 | mng_error_entryp pEntry; /* pointer to found entry */
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| 184 | /* determine max index of table */
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| 185 | iTop = (sizeof (error_table) / sizeof (error_table [0])) - 1;
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| 186 |
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| 187 | iLower = 0; /* initialize binary search */
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| 188 | iMiddle = iTop >> 1; /* start in the middle */
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| 189 | iUpper = iTop;
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| 190 | pEntry = 0; /* no goods yet! */
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| 191 |
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| 192 | do /* the binary search itself */
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| 193 | {
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| 194 | if (error_table [iMiddle].iError < iError)
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| 195 | iLower = iMiddle + 1;
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| 196 | else if (error_table [iMiddle].iError > iError)
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| 197 | iUpper = iMiddle - 1;
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| 198 | else
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| 199 | {
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| 200 | pEntry = &error_table [iMiddle];
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| 201 | break;
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| 202 | }
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| 203 |
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| 204 | iMiddle = (iLower + iUpper) >> 1;
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| 205 | }
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| 206 | while (iLower <= iUpper);
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| 207 |
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| 208 | if (pEntry) /* found it ? */
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| 209 | pData->zErrortext = pEntry->zErrortext;
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| 210 | else
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| 211 | pData->zErrortext = "Unknown error";
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| 212 | }
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| 213 | #else
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| 214 | pData->zErrortext = 0;
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| 215 | #endif /* mng_error_telltale */
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| 216 |
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| 217 | if (iError == 0) /* no error is not severe ! */
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| 218 | {
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| 219 | pData->iSeverity = 0;
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| 220 | }
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| 221 | else
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| 222 | {
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| 223 | switch (iError&0x3C00) /* determine the severity */
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| 224 | {
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| 225 | case 0x0800 : { pData->iSeverity = 5; break; }
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| 226 | case 0x1000 : { pData->iSeverity = 2; break; }
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| 227 | case 0x2000 : { pData->iSeverity = 1; break; }
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| 228 | default : { pData->iSeverity = 9; }
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| 229 | }
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| 230 | }
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| 231 | }
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| 232 |
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| 233 | #ifdef MNG_SUPPORT_TRACE
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| 234 | MNG_TRACEB (pData, MNG_FN_STORE_ERROR, MNG_LC_END)
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| 235 | #endif
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| 236 |
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| 237 | return MNG_TRUE;
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| 238 | }
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| 239 |
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| 240 | /* ************************************************************************** */
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| 241 |
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| 242 | mng_bool mng_process_error (mng_datap pData,
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| 243 | mng_retcode iError,
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| 244 | mng_retcode iExtra1,
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| 245 | mng_retcode iExtra2)
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| 246 | {
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| 247 | #ifdef MNG_SUPPORT_TRACE
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| 248 | MNG_TRACEB (pData, MNG_FN_PROCESS_ERROR, MNG_LC_START)
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| 249 | #endif
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| 250 |
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| 251 | mng_store_error (pData, iError, iExtra1, iExtra2);
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| 252 |
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| 253 | if (pData != 0)
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| 254 | {
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| 255 | if (pData->fErrorproc) /* callback defined ? */
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| 256 | return pData->fErrorproc (((mng_handle)pData), iError, pData->iSeverity,
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| 257 | pData->iChunkname, pData->iChunkseq,
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| 258 | pData->iErrorx1, pData->iErrorx2, pData->zErrortext);
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| 259 | }
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| 260 |
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| 261 | #ifdef MNG_SUPPORT_TRACE
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| 262 | MNG_TRACEB (pData, MNG_FN_PROCESS_ERROR, MNG_LC_END)
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| 263 | #endif
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| 264 |
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| 265 | return MNG_FALSE; /* automatic failure */
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| 266 | }
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| 267 |
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| 268 | /* ************************************************************************** */
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| 269 | /* * end of file * */
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| 270 | /* ************************************************************************** */
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| 271 |
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