1 // Copyright 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <stdint.h>
16 #include <gdk-pixbuf/gdk-pixbuf.h>
17
18 #define WIDTH 10
19 #define HEIGHT 20
20 #define ROWSTRIDE (WIDTH * 4)
21
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)22 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
23 if (!(size >= WIDTH * HEIGHT * 4)) {
24 return 0;
25 }
26 const gchar *profile;
27 GdkPixbuf *pixbuf, *tmp;
28 GBytes *bytes;
29 bytes = g_bytes_new_static(data, size);
30 pixbuf = g_object_new(GDK_TYPE_PIXBUF,
31 "width", WIDTH,
32 "height", HEIGHT,
33 "rowstride", ROWSTRIDE,
34 "bits-per-sample", 8,"n-channels", 3,
35 "has-alpha", FALSE,
36 "pixel-bytes", bytes,
37 NULL);
38 if (pixbuf == NULL) {
39 return 0;
40 }
41 gdk_pixbuf_scale(pixbuf, pixbuf,
42 0, 0,
43 gdk_pixbuf_get_width(pixbuf) / 4,
44 gdk_pixbuf_get_height(pixbuf) / 4,
45 0, 0, 0.5, 0.5,
46 GDK_INTERP_NEAREST);
47 unsigned int rot_amount = ((unsigned int) data[0]) % 4;
48 tmp = gdk_pixbuf_rotate_simple(pixbuf, rot_amount * 90);
49 tmp = gdk_pixbuf_flip(pixbuf, TRUE);
50 tmp = gdk_pixbuf_composite_color_simple(pixbuf,
51 gdk_pixbuf_get_width(pixbuf) / 4,
52 gdk_pixbuf_get_height(pixbuf) / 4,
53 GDK_INTERP_NEAREST,
54 128,
55 8,
56 G_MAXUINT32,
57 G_MAXUINT32/2);
58
59 char *buf = (char *) calloc(size + 1, sizeof(char));
60 memcpy(buf, data, size);
61 buf[size] = '\0';
62
63 gdk_pixbuf_set_option(pixbuf, buf, buf);
64 profile = gdk_pixbuf_get_option(pixbuf, buf);
65 tmp = gdk_pixbuf_new_from_data(gdk_pixbuf_get_pixels(pixbuf),
66 GDK_COLORSPACE_RGB,
67 FALSE,
68 gdk_pixbuf_get_bits_per_sample(pixbuf),
69 gdk_pixbuf_get_width(pixbuf),
70 gdk_pixbuf_get_height(pixbuf),
71 gdk_pixbuf_get_rowstride(pixbuf),
72 NULL,
73 NULL);
74 tmp = gdk_pixbuf_flip(tmp, TRUE);
75
76 free(buf);
77 g_object_unref(pixbuf);
78 g_object_unref(tmp);
79 return 0;
80 }
81