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/* -*- Mode: C; c-basic-offset: 2; -*- */
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/* GdkPixbuf library - test loaders
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* Copyright (C) 2001 S�ren Sandmann (sandmann@daimi.au.dk)
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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#include "gdk-pixbuf/gdk-pixbuf.h"
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disaster (const char *what)
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randomly_modify (const gchar *image, guint size)
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guchar *img_copy = g_malloc (size);
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g_memmove (img_copy, image, size);
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for (i = 0; i < size / 4; i++)
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GdkPixbufLoader *loader;
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guint index = g_random_int_range (0, size);
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guchar byte = g_random_int_range (0, 256);
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img_copy[index] = byte;
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f = fopen ("pixbuf-randomly-modified-image", "w");
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fwrite (img_copy, size, 1, f);
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loader = gdk_pixbuf_loader_new ();
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gdk_pixbuf_loader_write (loader, img_copy, size, NULL);
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gdk_pixbuf_loader_close (loader, NULL);
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g_object_unref (loader);
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/* write this so you can reproduce failed tests */
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f = fopen ("pixbuf-randomly-modified-seed", "w");
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if (fprintf (f, "%d\n", seed) < 0)
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g_print ("seed: %d\n", seed);
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g_print ("usage: pixbuf-randomly-modified [-s <seed>] <files> ... \n");
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main (int argc, char **argv)
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gboolean got_seed = FALSE;
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GPtrArray *files = g_ptr_array_new ();
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for (i = 1; i < argc; ++i)
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if (strncmp (argv[i], "-s", 2) == 0)
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if (strlen (argv[i]) > 2)
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seed = atoi (argv[i+1]);
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g_ptr_array_add (files, strdup (argv[i]));
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g_random_set_seed (seed);
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g_print ("the last tested image is saved to pixbuf-randomly-modified-image\n");
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g_log_set_always_fatal (G_LOG_LEVEL_WARNING | G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL);
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for (i = 0; i < files->len; ++i)
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if (!g_file_get_contents (files->pdata[i], &contents, &size, &err))
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g_print ("%s: error: %s\n", (char *)files->pdata[i], err->message);
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g_print ("%s\t\t", (char *)files->pdata[i]);
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randomly_modify (contents, size);