1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
#include <eel/eel-gdk-pixbuf-extensions.h>
#include "test.h"
#define DEST_WIDTH 32
#define DEST_HEIGHT 32
int
main (int argc, char* argv[])
{
GdkPixbuf *pixbuf, *scaled;
GError *error;
gint64 t1, t2;
int width;
int height;
test_init (&argc, &argv);
if (argc != 2) {
printf ("Usage: test <image filename>\n");
exit (1);
}
error = NULL;
pixbuf = gdk_pixbuf_new_from_file (argv[1], &error);
if (pixbuf == NULL) {
printf ("error loading pixbuf: %s\n", error->message);
exit (1);
}
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
printf ("scale factors: %f, %f\n",
((double) width) / ((double) DEST_WIDTH),
((double) height) / ((double) DEST_HEIGHT));
t1 = g_get_monotonic_time ();
scaled = eel_gdk_pixbuf_scale_down (pixbuf, DEST_WIDTH, DEST_HEIGHT);
t2 = g_get_monotonic_time ();
g_object_unref (scaled);
g_print ("Time for eel_gdk_pixbuf_scale_down: %" G_GINT64_FORMAT " usecs\n", t2 - t1);
t1 = g_get_monotonic_time ();
scaled = gdk_pixbuf_scale_simple (pixbuf, DEST_WIDTH, DEST_HEIGHT, GDK_INTERP_NEAREST);
t2 = g_get_monotonic_time ();
g_object_unref (scaled);
g_print ("Time for INTERP_NEAREST: %" G_GINT64_FORMAT " usecs\n", t2 - t1);
t1 = g_get_monotonic_time ();
scaled = gdk_pixbuf_scale_simple (pixbuf, DEST_WIDTH, DEST_HEIGHT, GDK_INTERP_BILINEAR);
t2 = g_get_monotonic_time ();
g_object_unref (scaled);
g_print ("Time for INTERP_BILINEAR: %" G_GINT64_FORMAT " usecs\n", t2 - t1);
scaled = eel_gdk_pixbuf_scale_down (pixbuf, DEST_WIDTH, DEST_HEIGHT);
gdk_pixbuf_save (scaled, "eel_scaled.png", "png", NULL, NULL);
g_object_unref (scaled);
scaled = gdk_pixbuf_scale_simple (pixbuf, DEST_WIDTH, DEST_HEIGHT, GDK_INTERP_NEAREST);
gdk_pixbuf_save (scaled, "nearest_scaled.png", "png", NULL, NULL);
g_object_unref (scaled);
scaled = gdk_pixbuf_scale_simple (pixbuf, DEST_WIDTH, DEST_HEIGHT, GDK_INTERP_BILINEAR);
gdk_pixbuf_save (scaled, "bilinear_scaled.png", "png", NULL, NULL);
g_object_unref (scaled);
return 0;
}
|