src/tiff/libtiff/tif_codec.c

   1 /* $Id$ */
   2
   3 /*
   4  * Copyright (c) 1988-1997 Sam Leffler
   5  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
   6  *
   7  * Permission to use, copy, modify, distribute, and sell this software and
   8  * its documentation for any purpose is hereby granted without fee, provided
   9  * that (i) the above copyright notices and this permission notice appear in
  10  * all copies of the software and related documentation, and (ii) the names of
  11  * Sam Leffler and Silicon Graphics may not be used in any advertising or
  12  * publicity relating to the software without the specific, prior written
  13  * permission of Sam Leffler and Silicon Graphics.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  17  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  18  *
  19  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  20  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  21  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  22  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  23  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  */
  26
  27 /*
  28  * TIFF Library
  29  *
  30  * Builtin Compression Scheme Configuration Support.
  31  */
  32 #include "tiffiop.h"
  33
  34 static int NotConfigured(TIFF*, int);
  35
  36 #ifndef LZW_SUPPORT
  37 #define TIFFInitLZW NotConfigured
  38 #endif
  39 #ifndef PACKBITS_SUPPORT
  40 #define TIFFInitPackBits NotConfigured
  41 #endif
  42 #ifndef THUNDER_SUPPORT
  43 #define TIFFInitThunderScan NotConfigured
  44 #endif
  45 #ifndef NEXT_SUPPORT
  46 #define TIFFInitNeXT NotConfigured
  47 #endif
  48 #ifndef JPEG_SUPPORT
  49 #define TIFFInitJPEG NotConfigured
  50 #endif
  51 #ifndef OJPEG_SUPPORT
  52 #define TIFFInitOJPEG NotConfigured
  53 #endif
  54 #ifndef CCITT_SUPPORT
  55 #define TIFFInitCCITTRLE NotConfigured
  56 #define TIFFInitCCITTRLEW NotConfigured
  57 #define TIFFInitCCITTFax3 NotConfigured
  58 #define TIFFInitCCITTFax4 NotConfigured
  59 #endif
  60 #ifndef JBIG_SUPPORT
  61 #define TIFFInitJBIG NotConfigured
  62 #endif
  63 #ifndef ZIP_SUPPORT
  64 #define TIFFInitZIP NotConfigured
  65 #endif
  66 #ifndef PIXARLOG_SUPPORT
  67 #define TIFFInitPixarLog NotConfigured
  68 #endif
  69 #ifndef LOGLUV_SUPPORT
  70 #define TIFFInitSGILog NotConfigured
  71 #endif
  72 #ifndef LZMA_SUPPORT
  73 #define TIFFInitLZMA NotConfigured
  74 #endif
  75
  76 /*
  77  * Compression schemes statically built into the library.
  78  */
  79 #ifdef VMS
  80 const TIFFCodec _TIFFBuiltinCODECS[] = {
  81 #else
  82 TIFFCodec _TIFFBuiltinCODECS[] = {
  83 #endif
  84     { "None",           COMPRESSION_NONE,       TIFFInitDumpMode },
  85     { "LZW",            COMPRESSION_LZW,        TIFFInitLZW },
  86     { "PackBits",       COMPRESSION_PACKBITS,   TIFFInitPackBits },
  87     { "ThunderScan",    COMPRESSION_THUNDERSCAN,TIFFInitThunderScan },
  88     { "NeXT",           COMPRESSION_NEXT,       TIFFInitNeXT },
  89     { "JPEG",           COMPRESSION_JPEG,       TIFFInitJPEG },
  90     { "Old-style JPEG", COMPRESSION_OJPEG,      TIFFInitOJPEG },
  91     { "CCITT RLE",      COMPRESSION_CCITTRLE,   TIFFInitCCITTRLE },
  92     { "CCITT RLE/W",    COMPRESSION_CCITTRLEW,  TIFFInitCCITTRLEW },
  93     { "CCITT Group 3",  COMPRESSION_CCITTFAX3,  TIFFInitCCITTFax3 },
  94     { "CCITT Group 4",  COMPRESSION_CCITTFAX4,  TIFFInitCCITTFax4 },
  95     { "ISO JBIG",       COMPRESSION_JBIG,       TIFFInitJBIG },
  96     { "Deflate",        COMPRESSION_DEFLATE,    TIFFInitZIP },
  97     { "AdobeDeflate",   COMPRESSION_ADOBE_DEFLATE , TIFFInitZIP },
  98     { "PixarLog",       COMPRESSION_PIXARLOG,   TIFFInitPixarLog },
  99     { "SGILog",         COMPRESSION_SGILOG,     TIFFInitSGILog },
 100     { "SGILog24",       COMPRESSION_SGILOG24,   TIFFInitSGILog },
 101     { "LZMA",           COMPRESSION_LZMA,       TIFFInitLZMA },
 102     { NULL,             0,                      NULL }
 103 };
 104
 105 static int
 106 _notConfigured(TIFF* tif)
 107 {
 108         const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
 109         char compression_code[20];
 110
 111         sprintf( compression_code, "%d", tif->tif_dir.td_compression );
 112         TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
 113                      "%s compression support is not configured",
 114                      c ? c->name : compression_code );
 115         return (0);
 116 }
 117
 118 static int
 119 NotConfigured(TIFF* tif, int scheme)
 120 {
 121         (void) scheme;
 122
 123         tif->tif_fixuptags = _notConfigured;
 124         tif->tif_decodestatus = FALSE;
 125         tif->tif_setupdecode = _notConfigured;
 126         tif->tif_encodestatus = FALSE;
 127         tif->tif_setupencode = _notConfigured;
 128         return (1);
 129 }
 130
 131 /************************************************************************/
 132 /*                       TIFFIsCODECConfigured()                        */
 133 /************************************************************************/
 134
 135 /**
 136  * Check whether we have working codec for the specific coding scheme.
 137  *
 138  * @return returns 1 if the codec is configured and working. Otherwise
 139  * 0 will be returned.
 140  */
 141
 142 int
 143 TIFFIsCODECConfigured(uint16 scheme)
 144 {
 145         const TIFFCodec* codec = TIFFFindCODEC(scheme);
 146
 147         if(codec == NULL) {
 148                 return 0;
 149         }
 150         if(codec->init == NULL) {
 151                 return 0;
 152         }
 153         if(codec->init != NotConfigured){
 154                 return 1;
 155         }
 156         return 0;
 157 }
 158
 159 /*
 160  * Local Variables:
 161  * mode: c
 162  * c-basic-offset: 8
 163  * fill-column: 78
 164  * End:
 165  */