src/image_load_tiff.c

   1 /*
   2  * Copyright (C) 1999 Mark Crichton
   3  * Copyright (C) 1999 The Free Software Foundation
   4  * Copyright (C) 2004 John Ellis
   5  * Copyright (C) 2008 - 2016 The Geeqie Team
   6  *
   7  * Authors: Mark Crichton <crichton@gimp.org>
   8  *          Federico Mena-Quintero <federico@gimp.org>
   9  *          Jonathan Blandford <jrb@redhat.com>
  10  *          S�ren Sandmann <sandmann@daimi.au.dk>
  11  *          Vladimir Nadvornik
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with this program; if not, write to the Free Software Foundation, Inc.,
  25  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27
  28 #include "main.h"
  29
  30 #include "image-load.h"
  31 #include "image_load_tiff.h"
  32
  33 #ifdef HAVE_TIFF
  34
  35 #include <tiffio.h>
  36
  37 typedef struct _ImageLoaderTiff ImageLoaderTiff;
  38 struct _ImageLoaderTiff {
  39         ImageLoaderBackendCbAreaUpdated area_updated_cb;
  40         ImageLoaderBackendCbSize size_cb;
  41         ImageLoaderBackendCbAreaPrepared area_prepared_cb;
  42
  43         gpointer data;
  44
  45         GdkPixbuf *pixbuf;
  46         guint requested_width;
  47         guint requested_height;
  48
  49         gboolean abort;
  50
  51         const guchar *buffer;
  52         toff_t used;
  53         toff_t pos;
  54 };
  55
  56 static void free_buffer (guchar *pixels, gpointer data)
  57 {
  58         g_free (pixels);
  59 }
  60
  61 static tsize_t
  62 tiff_load_read (thandle_t handle, tdata_t buf, tsize_t size)
  63 {
  64         ImageLoaderTiff *context = (ImageLoaderTiff *)handle;
  65
  66         if (context->pos + size > context->used)
  67                 return 0;
  68
  69         memcpy (buf, context->buffer + context->pos, size);
  70         context->pos += size;
  71         return size;
  72 }
  73
  74 static tsize_t
  75 tiff_load_write (thandle_t handle, tdata_t buf, tsize_t size)
  76 {
  77         return -1;
  78 }
  79
  80 static toff_t
  81 tiff_load_seek (thandle_t handle, toff_t offset, int whence)
  82 {
  83         ImageLoaderTiff *context = (ImageLoaderTiff *)handle;
  84
  85         switch (whence)
  86                 {
  87                 case SEEK_SET:
  88                         if (offset > context->used)
  89                                 return -1;
  90                         context->pos = offset;
  91                         break;
  92                 case SEEK_CUR:
  93                         if (offset + context->pos >= context->used)
  94                                 return -1;
  95                         context->pos += offset;
  96                         break;
  97                 case SEEK_END:
  98                         if (offset + context->used > context->used)
  99                                 return -1;
 100                         context->pos = context->used + offset;
 101                         break;
 102                 default:
 103                         return -1;
 104                 }
 105
 106         return context->pos;
 107 }
 108
 109 static int
 110 tiff_load_close (thandle_t context)
 111 {
 112         return 0;
 113 }
 114
 115 static toff_t
 116 tiff_load_size (thandle_t handle)
 117 {
 118         ImageLoaderTiff *context = (ImageLoaderTiff *)handle;
 119         return context->used;
 120 }
 121
 122 static int
 123 tiff_load_map_file (thandle_t handle, tdata_t *buf, toff_t *size)
 124 {
 125         ImageLoaderTiff *context = (ImageLoaderTiff *)handle;
 126
 127         *buf = (tdata_t *) context->buffer;
 128         *size = context->used;
 129
 130         return 0;
 131 }
 132
 133 static void
 134 tiff_load_unmap_file (thandle_t handle, tdata_t data, toff_t offset)
 135 {
 136 }
 137
 138 static gboolean image_loader_tiff_load (gpointer loader, const guchar *buf, gsize count, GError **error)
 139 {
 140         ImageLoaderTiff *lt = (ImageLoaderTiff *) loader;
 141
 142         TIFF *tiff;
 143         guchar *pixels = NULL;
 144         gint width, height, rowstride, bytes;
 145         uint32 rowsperstrip;
 146
 147         lt->buffer = buf;
 148         lt->used = count;
 149         lt->pos = 0;
 150
 151         TIFFSetWarningHandler(NULL);
 152
 153         tiff = TIFFClientOpen ( "libtiff-geeqie", "r", lt,
 154                                                         tiff_load_read, tiff_load_write,
 155                                                         tiff_load_seek, tiff_load_close,
 156                                                         tiff_load_size,
 157                                                         tiff_load_map_file, tiff_load_unmap_file);
 158         if (!tiff)
 159                 {
 160                 DEBUG_1("Failed to open TIFF image");
 161                 return FALSE;
 162                 }
 163
 164
 165         if (!TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width))
 166                 {
 167                 DEBUG_1("Could not get image width (bad TIFF file)");
 168                 TIFFClose(tiff);
 169                 return FALSE;
 170                 }
 171
 172         if (!TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height))
 173                 {
 174                 DEBUG_1("Could not get image height (bad TIFF file)");
 175                 TIFFClose(tiff);
 176                 return FALSE;
 177                 }
 178
 179         if (width <= 0 || height <= 0)
 180                 {
 181                 DEBUG_1("Width or height of TIFF image is zero");
 182                 TIFFClose(tiff);
 183                 return FALSE;
 184                 }
 185
 186         rowstride = width * 4;
 187         if (rowstride / 4 != width)
 188                 { /* overflow */
 189                 DEBUG_1("Dimensions of TIFF image too large");
 190                 TIFFClose(tiff);
 191                 return FALSE;
 192                 }
 193
 194         bytes = height * rowstride;
 195         if (bytes / rowstride != height)
 196                 { /* overflow */
 197                 DEBUG_1("Dimensions of TIFF image too large");
 198                 TIFFClose(tiff);
 199                 return FALSE;
 200                 }
 201
 202         lt->requested_width = width;
 203         lt->requested_height = height;
 204         lt->size_cb(loader, lt->requested_width, lt->requested_height, lt->data);
 205
 206         pixels = g_try_malloc (bytes);
 207
 208         if (!pixels)
 209                 {
 210                 DEBUG_1("Insufficient memory to open TIFF file");
 211                 TIFFClose(tiff);
 212                 return FALSE;
 213                 }
 214
 215         lt->pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
 216                                                                                    width, height, rowstride,
 217                                                                                    free_buffer, NULL);
 218         if (!lt->pixbuf)
 219                 {
 220                 g_free (pixels);
 221                 DEBUG_1("Insufficient memory to open TIFF file");
 222                 TIFFClose(tiff);
 223                 return FALSE;
 224                 }
 225
 226         lt->area_prepared_cb(loader, lt->data);
 227
 228         if (TIFFGetField(tiff, TIFFTAG_ROWSPERSTRIP, &rowsperstrip))
 229                 {
 230                 /* read by strip */
 231                 int row;
 232                 guchar *wrk_line = (guchar *)g_malloc(width * sizeof (uint32));
 233
 234                 for (row = 0; row < height; row += rowsperstrip)
 235                         {
 236                         int rows_to_write, i_row;
 237
 238                         if (lt->abort) {
 239                                 break;
 240                         }
 241
 242                         /* Read the strip into an RGBA array */
 243                         if (!TIFFReadRGBAStrip(tiff, row, (uint32 *)(pixels + row * rowstride))) {
 244                                 break;
 245                         }
 246
 247                         /*
 248                          * Figure out the number of scanlines actually in this strip.
 249                         */
 250                         if (row + (int)rowsperstrip > height)
 251                                 rows_to_write = height - row;
 252                         else
 253                                 rows_to_write = rowsperstrip;
 254
 255                         /*
 256                          * For some reason the TIFFReadRGBAStrip() function chooses the
 257                          * lower left corner as the origin.  Vertically mirror scanlines.
 258                          */
 259                         for (i_row = 0; i_row < rows_to_write / 2; i_row++)
 260                                 {
 261                                 guchar *top_line, *bottom_line;
 262
 263                                 top_line = pixels + (row + i_row) * rowstride;
 264                                 bottom_line = pixels + (row + rows_to_write - i_row - 1) * rowstride;
 265
 266                                 memcpy(wrk_line, top_line, 4*width);
 267                                 memcpy(top_line, bottom_line, 4*width);
 268                                 memcpy(bottom_line, wrk_line, 4*width);
 269                                 }
 270                         lt->area_updated_cb(loader, 0, row, width, rows_to_write, lt->data);
 271                         }
 272                 g_free(wrk_line);
 273                 }
 274         else
 275                 {
 276                 /* fallback, tiled tiff */
 277                 if (!TIFFReadRGBAImageOriented (tiff, width, height, (uint32 *)pixels, ORIENTATION_TOPLEFT, 1))
 278                         {
 279                         TIFFClose(tiff);
 280                         return FALSE;
 281                         }
 282
 283 #if G_BYTE_ORDER == G_BIG_ENDIAN
 284                 /* Turns out that the packing used by TIFFRGBAImage depends on
 285                  * the host byte order...
 286                  */
 287                 {
 288                 guchar *ptr = pixels;
 289                 while (ptr < pixels + bytes)
 290                         {
 291                         uint32 pixel = *(uint32 *)ptr;
 292                         int r = TIFFGetR(pixel);
 293                         int g = TIFFGetG(pixel);
 294                         int b = TIFFGetB(pixel);
 295                         int a = TIFFGetA(pixel);
 296                         *ptr++ = r;
 297                         *ptr++ = g;
 298                         *ptr++ = b;
 299                         *ptr++ = a;
 300                         }
 301                 }
 302 #endif
 303
 304                 lt->area_updated_cb(loader, 0, 0, width, height, lt->data);
 305                 }
 306         TIFFClose(tiff);
 307
 308         return TRUE;
 309 }
 310
 311
 312 static gpointer image_loader_tiff_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
 313 {
 314         ImageLoaderTiff *loader = g_new0(ImageLoaderTiff, 1);
 315
 316         loader->area_updated_cb = area_updated_cb;
 317         loader->size_cb = size_cb;
 318         loader->area_prepared_cb = area_prepared_cb;
 319         loader->data = data;
 320         return (gpointer) loader;
 321 }
 322
 323
 324 static void image_loader_tiff_set_size(gpointer loader, int width, int height)
 325 {
 326         ImageLoaderTiff *lt = (ImageLoaderTiff *) loader;
 327         lt->requested_width = width;
 328         lt->requested_height = height;
 329 }
 330
 331 static GdkPixbuf* image_loader_tiff_get_pixbuf(gpointer loader)
 332 {
 333         ImageLoaderTiff *lt = (ImageLoaderTiff *) loader;
 334         return lt->pixbuf;
 335 }
 336
 337 static gchar* image_loader_tiff_get_format_name(gpointer loader)
 338 {
 339         return g_strdup("tiff");
 340 }
 341 static gchar** image_loader_tiff_get_format_mime_types(gpointer loader)
 342 {
 343         static gchar *mime[] = {"image/tiff", NULL};
 344         return g_strdupv(mime);
 345 }
 346
 347 static gboolean image_loader_tiff_close(gpointer loader, GError **error)
 348 {
 349         return TRUE;
 350 }
 351
 352 static void image_loader_tiff_abort(gpointer loader)
 353 {
 354         ImageLoaderTiff *lt = (ImageLoaderTiff *) loader;
 355         lt->abort = TRUE;
 356 }
 357
 358 static void image_loader_tiff_free(gpointer loader)
 359 {
 360         ImageLoaderTiff *lt = (ImageLoaderTiff *) loader;
 361         if (lt->pixbuf) g_object_unref(lt->pixbuf);
 362         g_free(lt);
 363 }
 364
 365
 366 void image_loader_backend_set_tiff(ImageLoaderBackend *funcs)
 367 {
 368         funcs->loader_new = image_loader_tiff_new;
 369         funcs->set_size = image_loader_tiff_set_size;
 370         funcs->load = image_loader_tiff_load;
 371         funcs->write = NULL;
 372         funcs->get_pixbuf = image_loader_tiff_get_pixbuf;
 373         funcs->close = image_loader_tiff_close;
 374         funcs->abort = image_loader_tiff_abort;
 375         funcs->free = image_loader_tiff_free;
 376
 377         funcs->get_format_name = image_loader_tiff_get_format_name;
 378         funcs->get_format_mime_types = image_loader_tiff_get_format_mime_types;
 379 }
 380
 381
 382
 383 #endif
 384 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */