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
  73 /*
  74  * Compression schemes statically built into the library.
  75  */
  76 #ifdef VMS
  77 const TIFFCodec _TIFFBuiltinCODECS[] = {
  78 #else
  79 TIFFCodec _TIFFBuiltinCODECS[] = {
  80 #endif
  81     { "None",           COMPRESSION_NONE,       TIFFInitDumpMode },
  82     { "LZW",            COMPRESSION_LZW,        TIFFInitLZW },
  83     { "PackBits",       COMPRESSION_PACKBITS,   TIFFInitPackBits },
  84     { "ThunderScan",    COMPRESSION_THUNDERSCAN,TIFFInitThunderScan },
  85     { "NeXT",           COMPRESSION_NEXT,       TIFFInitNeXT },
  86     { "JPEG",           COMPRESSION_JPEG,       TIFFInitJPEG },
  87     { "Old-style JPEG", COMPRESSION_OJPEG,      TIFFInitOJPEG },
  88     { "CCITT RLE",      COMPRESSION_CCITTRLE,   TIFFInitCCITTRLE },
  89     { "CCITT RLE/W",    COMPRESSION_CCITTRLEW,  TIFFInitCCITTRLEW },
  90     { "CCITT Group 3",  COMPRESSION_CCITTFAX3,  TIFFInitCCITTFax3 },
  91     { "CCITT Group 4",  COMPRESSION_CCITTFAX4,  TIFFInitCCITTFax4 },
  92     { "ISO JBIG",       COMPRESSION_JBIG,       TIFFInitJBIG },
  93     { "Deflate",        COMPRESSION_DEFLATE,    TIFFInitZIP },
  94     { "AdobeDeflate",   COMPRESSION_ADOBE_DEFLATE , TIFFInitZIP },
  95     { "PixarLog",       COMPRESSION_PIXARLOG,   TIFFInitPixarLog },
  96     { "SGILog",         COMPRESSION_SGILOG,     TIFFInitSGILog },
  97     { "SGILog24",       COMPRESSION_SGILOG24,   TIFFInitSGILog },
  98     { NULL,             0,                      NULL }
  99 };
 100
 101 static int
 102 _notConfigured(TIFF* tif)
 103 {
 104         const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
 105
 106         TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
 107             "%s compression support is not configured", c->name);
 108         return (0);
 109 }
 110
 111 static int
 112 NotConfigured(TIFF* tif, int scheme)
 113 {
 114     (void) scheme;
 115
 116     tif->tif_decodestatus = FALSE;
 117     tif->tif_setupdecode = _notConfigured;
 118     tif->tif_encodestatus = FALSE;
 119     tif->tif_setupencode = _notConfigured;
 120     return (1);
 121 }
 122
 123 /************************************************************************/
 124 /*                       TIFFIsCODECConfigured()                        */
 125 /************************************************************************/
 126
 127 /**
 128  * Check whether we have working codec for the specific coding scheme.
 129  *
 130  * @return returns 1 if the codec is configured and working. Otherwise
 131  * 0 will be returned.
 132  */
 133
 134 int
 135 TIFFIsCODECConfigured(uint16 scheme)
 136 {
 137         const TIFFCodec* codec = TIFFFindCODEC(scheme);
 138
 139         if(codec == NULL) {
 140             return 0;
 141         }
 142         if(codec->init == NULL) {
 143             return 0;
 144         }
 145         if(codec->init != NotConfigured){
 146             return 1;
 147         }
 148         return 0;
 149 }
 150