src/tiff/test/raw_decode.c

   1
   2 /*
   3  * Copyright (c) 2012, Frank Warmerdam <warmerdam@pobox.com>
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that (i) the above copyright notices and this permission notice appear in
   8  * all copies of the software and related documentation, and (ii) the names of
   9  * Sam Leffler and Silicon Graphics may not be used in any advertising or
  10  * publicity relating to the software without the specific, prior written
  11  * permission of Sam Leffler and Silicon Graphics.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  14  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  15  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  16  *
  17  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  18  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  19  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  20  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  21  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  22  * OF THIS SOFTWARE.
  23  */
  24
  25 /*
  26  * TIFF Library
  27  *
  28  * The objective of this test suite is to test the JPEGRawDecode()
  29  * interface via TIFReadEncodedTile().  This function with YCbCr subsampling
  30  * is a frequent source of bugs.
  31  */
  32
  33 #include "tif_config.h"
  34
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #ifdef HAVE_UNISTD_H
  39 # include <unistd.h>
  40 #endif
  41
  42 #include "tiffio.h"
  43
  44 #include "jpeglib.h" /* Needed for JPEG_LIB_VERSION */
  45
  46 static unsigned char cluster_0[] = { 0, 0, 2, 0, 138, 139 };
  47 static unsigned char cluster_64[] = { 0, 0, 9, 6, 134, 119 };
  48 static unsigned char cluster_128[] = { 44, 40, 63, 59, 230, 95 };
  49
  50 static int check_cluster( int cluster, unsigned char *buffer, unsigned char *expected_cluster ) {
  51         unsigned char *target = buffer + cluster*6;
  52
  53         if (memcmp(target, expected_cluster, 6) == 0) {
  54                 return 0;
  55         }
  56
  57         fprintf( stderr, "Cluster %d did not match expected results.\n", cluster );
  58         fprintf( stderr,
  59                  "Expect: %3d %3d   %3d   %3d\n"
  60                  "        %3d %3d\n",
  61                  expected_cluster[0], expected_cluster[1],
  62                  expected_cluster[4], expected_cluster[5],
  63                  expected_cluster[2], expected_cluster[3] );
  64         fprintf( stderr,
  65                  "   Got: %3d %3d   %3d   %3d\n"
  66                  "        %3d %3d\n",
  67                  target[0], target[1],
  68                  target[4], target[5],
  69                  target[2], target[3] );
  70         return 1;
  71 }
  72
  73 static int check_rgb_pixel( int pixel, int red, int green, int blue, unsigned char *buffer ) {
  74         unsigned char *rgb = buffer + 3 * pixel;
  75
  76         if( rgb[0] == red && rgb[1] == green && rgb[2] == blue ) {
  77                 return 0;
  78         }
  79
  80         fprintf( stderr, "Pixel %d did not match expected results.\n", pixel );
  81         fprintf( stderr, "Expect: %3d %3d %3d\n", red, green, blue );
  82         fprintf( stderr, "   Got: %3d %3d %3d\n", rgb[0], rgb[1], rgb[2] );
  83         return 1;
  84 }
  85
  86 static int check_rgba_pixel( int pixel, int red, int green, int blue, int alpha, uint32 *buffer ) {
  87         /* RGBA images are upside down - adjust for normal ordering */
  88         int adjusted_pixel = pixel % 128 + (127 - (pixel/128)) * 128;
  89         uint32 rgba = buffer[adjusted_pixel];
  90
  91         if( TIFFGetR(rgba) == (uint32) red && TIFFGetG(rgba) == (uint32) green &&
  92             TIFFGetB(rgba) == (uint32) blue && TIFFGetA(rgba) == (uint32) alpha ) {
  93                 return 0;
  94         }
  95
  96         fprintf( stderr, "Pixel %d did not match expected results.\n", pixel );
  97         fprintf( stderr, "Expect: %3d %3d %3d %3d\n", red, green, blue, alpha );
  98         fprintf( stderr, "   Got: %3d %3d %3d %3d\n",
  99                  TIFFGetR(rgba), TIFFGetG(rgba), TIFFGetB(rgba), TIFFGetA(rgba) );
 100         return 1;
 101 }
 102
 103 int
 104 main(int argc, char **argv)
 105 {
 106         TIFF            *tif;
 107         static const char *srcfilerel = "images/quad-tile.jpg.tiff";
 108         char *srcdir = NULL;
 109         char srcfile[1024];
 110         unsigned short h, v;
 111         int status;
 112         unsigned char *buffer;
 113         uint32 *rgba_buffer;
 114         tsize_t sz, szout;
 115         unsigned int pixel_status = 0;
 116
 117         (void) argc;
 118         (void) argv;
 119
 120         if ((srcdir = getenv("srcdir")) == NULL) {
 121                 srcdir = ".";
 122         }
 123         if ((strlen(srcdir) + 1 + strlen(srcfilerel)) >= sizeof(srcfile)) {
 124                 fprintf( stderr, "srcdir too long %s\n", srcdir);
 125                 exit( 1 );
 126         }
 127         strcpy(srcfile,srcdir);
 128         strcat(srcfile,"/");
 129         strcat(srcfile,srcfilerel);
 130
 131         tif = TIFFOpen(srcfile,"r");
 132         if ( tif == NULL ) {
 133                 fprintf( stderr, "Could not open %s\n", srcfile);
 134                 exit( 1 );
 135         }
 136
 137         status = TIFFGetField(tif,TIFFTAG_YCBCRSUBSAMPLING, &h, &v);
 138         if ( status == 0 || h != 2 || v != 2) {
 139                 fprintf( stderr, "Could not retrieve subsampling tag.\n" );
 140                 exit(1);
 141         }
 142
 143         /*
 144          * What is the appropriate size of a YCbCr encoded tile?
 145          */
 146         sz = TIFFTileSize(tif);
 147         if( sz != 24576) {
 148                 fprintf(stderr, "tiles are %d bytes\n", (int)sz);
 149                 exit(1);
 150         }
 151
 152         buffer = (unsigned char *) malloc(sz);
 153
 154         /*
 155          * Read a tile in decompressed form, but still YCbCr subsampled.
 156          */
 157         szout = TIFFReadEncodedTile(tif,9,buffer,sz);
 158         if (szout != sz) {
 159                 fprintf( stderr,
 160                          "Did not get expected result code from TIFFReadEncodedTile()(%d instead of %d)\n",
 161                          (int) szout, (int) sz );
 162                 return 1;
 163         }
 164
 165         if( check_cluster( 0, buffer, cluster_0 )
 166             || check_cluster( 64, buffer, cluster_64 )
 167             || check_cluster( 128, buffer, cluster_128 ) ) {
 168                 exit(1);
 169         }
 170         free(buffer);
 171
 172         /*
 173          * Read a tile using the built-in conversion to RGB format provided by the JPEG library.
 174          */
 175         TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
 176
 177         sz = TIFFTileSize(tif);
 178         if( sz != 128*128*3) {
 179                 fprintf(stderr, "tiles are %d bytes\n", (int)sz);
 180                 exit(1);
 181         }
 182
 183         buffer = (unsigned char *) malloc(sz);
 184
 185         szout = TIFFReadEncodedTile(tif,9,buffer,sz);
 186         if (szout != sz) {
 187                 fprintf( stderr,
 188                          "Did not get expected result code from TIFFReadEncodedTile()(%d instead of %d)\n",
 189                          (int) szout, (int) sz );
 190                 return 1;
 191         }
 192
 193 #if JPEG_LIB_VERSION >= 70
 194         pixel_status |= check_rgb_pixel( 0, 18, 0, 41, buffer );
 195         pixel_status |= check_rgb_pixel( 64, 0, 0, 0, buffer );
 196         pixel_status |= check_rgb_pixel( 512, 5, 34, 196, buffer );
 197 #else
 198         pixel_status |= check_rgb_pixel( 0, 15, 0, 18, buffer );
 199         pixel_status |= check_rgb_pixel( 64, 0, 0, 2, buffer );
 200         pixel_status |= check_rgb_pixel( 512, 6, 36, 182, buffer );
 201 #endif
 202
 203         free( buffer );
 204
 205         TIFFClose(tif);
 206
 207         /*
 208          * Reopen and test reading using the RGBA interface.
 209          */
 210         tif = TIFFOpen(srcfile,"r");
 211
 212         sz = 128 * 128 * sizeof(uint32);
 213         rgba_buffer = (uint32 *) malloc(sz);
 214
 215         if (!TIFFReadRGBATile( tif, 1*128, 2*128, rgba_buffer )) {
 216                 fprintf( stderr, "TIFFReadRGBATile() returned failure code.\n" );
 217                 return 1;
 218         }
 219
 220         /*
 221          * Currently TIFFReadRGBATile() just uses JPEGCOLORMODE_RGB so this
 222          * trivally matches the last results.  Eventually we should actually
 223          * accomplish it from the YCbCr subsampled buffer ourselves in which
 224          * case the results may be subtly different but similar.
 225          */
 226 #if JPEG_LIB_VERSION >= 70
 227         pixel_status |= check_rgba_pixel( 0, 18, 0, 41, 255, rgba_buffer );
 228         pixel_status |= check_rgba_pixel( 64, 0, 0, 0, 255, rgba_buffer );
 229         pixel_status |= check_rgba_pixel( 512, 5, 34, 196, 255, rgba_buffer );
 230 #else
 231         pixel_status |= check_rgba_pixel( 0, 15, 0, 18, 255, rgba_buffer );
 232         pixel_status |= check_rgba_pixel( 64, 0, 0, 2, 255, rgba_buffer );
 233         pixel_status |= check_rgba_pixel( 512, 6, 36, 182, 255, rgba_buffer );
 234 #endif
 235
 236         free( rgba_buffer );
 237         TIFFClose(tif);
 238
 239         if (pixel_status) {
 240                 exit(1);
 241         }
 242
 243         exit( 0 );
 244 }
 245
 246 /* vim: set ts=8 sts=8 sw=8 noet: */
 247 /*
 248  * Local Variables:
 249  * mode: c
 250  * c-basic-offset: 8
 251  * fill-column: 78
 252  * End:
 253  */