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
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>
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.
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.
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.
32 #include "image-load-tiff.h"
38 #include <gdk-pixbuf/gdk-pixbuf.h>
39 #include <glib-object.h>
45 #include "image-load.h"
47 struct ImageLoaderTiff {
48 ImageLoaderBackendCbAreaUpdated area_updated_cb;
49 ImageLoaderBackendCbSize size_cb;
50 ImageLoaderBackendCbAreaPrepared area_prepared_cb;
55 guint requested_width;
56 guint requested_height;
67 static void free_buffer (guchar *pixels, gpointer)
73 tiff_load_read (thandle_t handle, tdata_t buf, tsize_t size)
75 auto context = static_cast<ImageLoaderTiff *>(handle);
77 if (context->pos + size > context->used)
80 memcpy (buf, context->buffer + context->pos, size);
86 tiff_load_write (thandle_t, tdata_t, tsize_t)
92 tiff_load_seek (thandle_t handle, toff_t offset, int whence)
94 auto context = static_cast<ImageLoaderTiff *>(handle);
99 if (offset > context->used)
101 context->pos = offset;
104 if (offset + context->pos >= context->used)
106 context->pos += offset;
109 if (offset + context->used > context->used)
111 context->pos = context->used + offset;
121 tiff_load_close (thandle_t)
127 tiff_load_size (thandle_t handle)
129 auto context = static_cast<ImageLoaderTiff *>(handle);
130 return context->used;
134 tiff_load_map_file (thandle_t handle, tdata_t *buf, toff_t *size)
136 auto context = static_cast<ImageLoaderTiff *>(handle);
138 *buf = const_cast<guchar *>(context->buffer);
139 *size = context->used;
145 tiff_load_unmap_file (thandle_t, tdata_t, toff_t)
149 static gboolean image_loader_tiff_load (gpointer loader, const guchar *buf, gsize count, GError **)
151 auto lt = static_cast<ImageLoaderTiff *>(loader);
154 guchar *pixels = nullptr;
159 guint32 rowsperstrip;
166 TIFFSetWarningHandler(nullptr);
168 tiff = TIFFClientOpen ( "libtiff-geeqie", "r", lt,
169 tiff_load_read, tiff_load_write,
170 tiff_load_seek, tiff_load_close,
172 tiff_load_map_file, tiff_load_unmap_file);
175 DEBUG_1("Failed to open TIFF image");
181 } while (TIFFReadDirectory(tiff));
183 lt->page_total = dircount;
185 if (!TIFFSetDirectory(tiff, lt->page_num))
187 DEBUG_1("Failed to open TIFF image");
192 if (!TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width))
194 DEBUG_1("Could not get image width (bad TIFF file)");
199 if (!TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height))
201 DEBUG_1("Could not get image height (bad TIFF file)");
206 if (width <= 0 || height <= 0)
208 DEBUG_1("Width or height of TIFF image is zero");
213 rowstride = width * 4;
214 if (rowstride / 4 != width)
216 DEBUG_1("Dimensions of TIFF image too large: width %d", width);
221 bytes = static_cast<size_t>(height) * rowstride;
222 if (bytes / rowstride != static_cast<size_t>(height))
224 DEBUG_1("Dimensions of TIFF image too large: height %d", height);
229 lt->requested_width = width;
230 lt->requested_height = height;
231 lt->size_cb(loader, lt->requested_width, lt->requested_height, lt->data);
233 pixels = static_cast<guchar *>(g_try_malloc (bytes));
237 DEBUG_1("Insufficient memory to open TIFF file: need %zu", bytes);
242 lt->pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
243 width, height, rowstride,
244 free_buffer, nullptr);
248 DEBUG_1("Insufficient memory to open TIFF file");
253 lt->area_prepared_cb(loader, lt->data);
255 if (TIFFGetField(tiff, TIFFTAG_ROWSPERSTRIP, &rowsperstrip))
259 const size_t line_bytes = width * sizeof(guint32);
260 auto wrk_line = static_cast<guchar *>(g_malloc(line_bytes));
262 for (row = 0; row < height; row += rowsperstrip)
271 /* Read the strip into an RGBA array */
272 if (!TIFFReadRGBAStrip(tiff, row, reinterpret_cast<guint32 *>(pixels + row * rowstride))) {
277 * Figure out the number of scanlines actually in this strip.
279 if (row + static_cast<int>(rowsperstrip) > height)
280 rows_to_write = height - row;
282 rows_to_write = rowsperstrip;
285 * For some reason the TIFFReadRGBAStrip() function chooses the
286 * lower left corner as the origin. Vertically mirror scanlines.
288 for (i_row = 0; i_row < rows_to_write / 2; i_row++)
293 top_line = pixels + (row + i_row) * rowstride;
294 bottom_line = pixels + (row + rows_to_write - i_row - 1) * rowstride;
296 memcpy(wrk_line, top_line, line_bytes);
297 memcpy(top_line, bottom_line, line_bytes);
298 memcpy(bottom_line, wrk_line, line_bytes);
300 lt->area_updated_cb(loader, 0, row, width, rows_to_write, lt->data);
306 /* fallback, tiled tiff */
307 if (!TIFFReadRGBAImageOriented (tiff, width, height, reinterpret_cast<guint32 *>(pixels), ORIENTATION_TOPLEFT, 1))
313 #if G_BYTE_ORDER == G_BIG_ENDIAN
314 /* Turns out that the packing used by TIFFRGBAImage depends on
315 * the host byte order...
318 guchar *ptr = pixels;
319 while (ptr < pixels + bytes)
321 guint32 pixel = *(guint32 *)ptr;
322 int r = TIFFGetR(pixel);
323 int g = TIFFGetG(pixel);
324 int b = TIFFGetB(pixel);
325 int a = TIFFGetA(pixel);
334 lt->area_updated_cb(loader, 0, 0, width, height, lt->data);
342 static gpointer image_loader_tiff_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
344 auto loader = g_new0(ImageLoaderTiff, 1);
346 loader->area_updated_cb = area_updated_cb;
347 loader->size_cb = size_cb;
348 loader->area_prepared_cb = area_prepared_cb;
354 static void image_loader_tiff_set_size(gpointer loader, int width, int height)
356 auto lt = static_cast<ImageLoaderTiff *>(loader);
357 lt->requested_width = width;
358 lt->requested_height = height;
361 static GdkPixbuf* image_loader_tiff_get_pixbuf(gpointer loader)
363 auto lt = static_cast<ImageLoaderTiff *>(loader);
367 static gchar* image_loader_tiff_get_format_name(gpointer)
369 return g_strdup("tiff");
371 static gchar** image_loader_tiff_get_format_mime_types(gpointer)
373 static const gchar *mime[] = {"image/tiff", nullptr};
374 return g_strdupv(const_cast<gchar **>(mime));
377 static gboolean image_loader_tiff_close(gpointer, GError **)
382 static void image_loader_tiff_abort(gpointer loader)
384 auto lt = static_cast<ImageLoaderTiff *>(loader);
388 static void image_loader_tiff_free(gpointer loader)
390 auto lt = static_cast<ImageLoaderTiff *>(loader);
391 if (lt->pixbuf) g_object_unref(lt->pixbuf);
395 static void image_loader_tiff_set_page_num(gpointer loader, gint page_num)
397 auto lt = static_cast<ImageLoaderTiff *>(loader);
399 lt->page_num = page_num;
402 static gint image_loader_tiff_get_page_total(gpointer loader)
404 auto lt = static_cast<ImageLoaderTiff *>(loader);
406 return lt->page_total;
409 void image_loader_backend_set_tiff(ImageLoaderBackend *funcs)
411 funcs->loader_new = image_loader_tiff_new;
412 funcs->set_size = image_loader_tiff_set_size;
413 funcs->load = image_loader_tiff_load;
414 funcs->write = nullptr;
415 funcs->get_pixbuf = image_loader_tiff_get_pixbuf;
416 funcs->close = image_loader_tiff_close;
417 funcs->abort = image_loader_tiff_abort;
418 funcs->free = image_loader_tiff_free;
420 funcs->get_format_name = image_loader_tiff_get_format_name;
421 funcs->get_format_mime_types = image_loader_tiff_get_format_mime_types;
423 funcs->set_page_num = image_loader_tiff_set_page_num;
424 funcs->get_page_total = image_loader_tiff_get_page_total;
430 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */