gtk/tests/pixbuf-random.c

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/* -*- Mode: C; c-basic-offset: 2; -*- */
/* GdkPixbuf library - assault loaders with random data
*
* Copyright (C) 2001 S<EFBFBD>ren Sandmann (sandmann@daimi.au.dk)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include "gdk-pixbuf/gdk-pixbuf.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
static void
assault (const guchar *header, gsize header_size, int n_images)
{
FILE *f;
enum { N_CHARACTERS = 10000 };
int j;
for (j = 0; j < n_images; ++j)
{
GError *err = NULL;
int i;
GdkPixbufLoader *loader;
f = fopen ("pixbuf-random-image", "w");
if (!f)
{
perror ("fopen");
exit (EXIT_FAILURE);
}
loader = gdk_pixbuf_loader_new ();
gdk_pixbuf_loader_write (loader, header, header_size, &err);
if (err)
{
g_error_free (err);
continue;
}
for (i = 0; i < N_CHARACTERS; ++i)
{
int r = g_random_int ();
fwrite (&r, 1, sizeof (r), f);
if (ferror (f))
{
perror ("fwrite");
exit (EXIT_FAILURE);
}
gdk_pixbuf_loader_write (loader, (guchar *)&r, sizeof (r), &err);
if (err)
{
g_error_free (err);
err = NULL;
break;
}
}
fclose (f);
gdk_pixbuf_loader_close (loader, &err);
if (err)
{
g_error_free (err);
err = NULL;
}
g_object_unref (loader);
}
}
static void
write_seed (int seed)
{
FILE *f;
/* write this so you can reproduce failed tests */
f = fopen ("pixbuf-random-seed", "w");
if (!f)
{
perror ("fopen");
exit (EXIT_FAILURE);
}
if (fprintf (f, "%d\n", seed) < 0)
{
perror ("fprintf");
exit (EXIT_FAILURE);
}
if (fclose (f) < 0)
{
perror ("fclose");
exit (EXIT_FAILURE);
}
g_print ("seed: %d\n", seed);
}
int
main (int argc, char **argv)
{
int seed;
if (argc > 1)
seed = atoi (argv[1]);
else
{
seed = time (NULL);
write_seed (seed);
}
g_print ("the last tested image is saved to the file \"pixbuf-random-image\"\n\n");
g_type_init ();
g_log_set_always_fatal (G_LOG_LEVEL_WARNING | G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL);
g_random_set_seed (seed);
#define GIF_HEADER 'G', 'I', 'F', '8', '9', 'a'
#define PNG_HEADER 0x89, 'P', 'N', 'G', 0x0d, 0x0a, 0x1a, 0x0a
#define TIFF1_HEADER 'M', 'M', 0x00, 0x2a
#define TIFF2_HEADER 'I', 'I', 0x2a, 0x00
#define JPEG_HEADER 0xFF, 0xd8
#define PNM_HEADER 'P', '6'
#define XBM_HEADER '#', 'd', 'e', 'f', 'i', 'n', 'e', ' '
#define BMP_HEADER 'B', 'M'
#define XPM_HEADER '/', '*', ' ', 'X', 'P', 'M', ' ', '*', '/'
#define RAS_HEADER 0x59, 0xA6, 0x6A, 0x95
#define TEST_RANDOM(header, n_img) \
do { \
static guchar h[] = { header }; \
g_print (#header); \
fflush (stdout); \
assault (h, sizeof (h), n_img); \
g_print ("\t\tpassed\n"); \
} while (0)
for (;;)
{
TEST_RANDOM (GIF_HEADER, 150);
TEST_RANDOM (PNG_HEADER, 110);
TEST_RANDOM (JPEG_HEADER, 800);
TEST_RANDOM (TIFF1_HEADER, 150);
TEST_RANDOM (TIFF2_HEADER, 150);
TEST_RANDOM (PNM_HEADER, 150);
TEST_RANDOM (XBM_HEADER, 150);
TEST_RANDOM (BMP_HEADER, 150);
TEST_RANDOM (XPM_HEADER, 150);
TEST_RANDOM (RAS_HEADER, 300);
g_print ("===========================\n");
}
return 0;
}