gstreamer/testsuite/caps/simplify.c

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/*
* Copyright (C) 2004 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* This library 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 library 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 library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <gst/gst.h>
#include <string.h>
#include "caps.h"
/* statistics junkie!!! */
static guint size_before = 0, size_after = 0;
static guint length_before = 0, length_after = 0;
static guint impossible = 0, success = 0, failure = 0;
static void
check_caps (GstCaps * caps)
{
gchar *before, *after;
GstCaps *old;
before = gst_caps_to_string (caps);
old = gst_caps_copy (caps);
gst_caps_do_simplify (caps);
after = gst_caps_to_string (caps);
g_assert (gst_caps_get_size (caps) <= gst_caps_get_size (old));
if (gst_caps_get_size (caps) == gst_caps_get_size (old))
g_assert (strlen (after) <= strlen (before));
g_assert (gst_caps_is_equal (caps, old));
g_print ("%s %2u/%-4u => %2u/%-4u\n",
gst_caps_get_size (caps) < gst_caps_get_size (old) ||
strlen (after) < strlen (before) ? "REDUCED" :
(gst_caps_get_size (old) < 2 ? " --- " : " "),
gst_caps_get_size (old), strlen (before),
gst_caps_get_size (caps), strlen (after));
size_before += gst_caps_get_size (old);
size_after += gst_caps_get_size (caps);
length_before += strlen (before);
length_after += strlen (after);
if (gst_caps_get_size (old) < 2) {
impossible++;
} else if (gst_caps_get_size (caps) < gst_caps_get_size (old) ||
strlen (after) < strlen (before)) {
success++;
} else {
failure++;
}
g_free (before);
g_free (after);
gst_caps_unref (old);
}
gint
main (gint argc, gchar ** argv)
{
guint i, j;
gst_init (&argc, &argv);
for (i = 0; i < G_N_ELEMENTS (caps_list); i++) {
GstCaps *caps = gst_caps_from_string (caps_list[i]);
g_print (" %2u ", i);
check_caps (caps);
if (!gst_caps_is_any (caps)) {
for (j = 0; j < G_N_ELEMENTS (caps_list); j++) {
GstCaps *temp, *temp2;
GstCaps *caps2 = gst_caps_from_string (caps_list[j]);
/* subtraction */
temp = gst_caps_subtract (caps, caps2);
g_print ("%2u - %2u ", i, j);
check_caps (temp);
gst_caps_unref (temp);
/* union */
temp = gst_caps_union (caps, caps2);
g_print ("%2u + %2u ", i, j);
check_caps (temp);
if (i == j)
g_assert (gst_caps_get_size (caps) == gst_caps_get_size (temp));
g_assert (gst_caps_is_subset (caps, temp));
g_assert (gst_caps_is_subset (caps2, temp));
/* appending (union without simplifying) */
temp2 = gst_caps_copy (caps);
gst_caps_append (temp2, caps2);
g_assert (gst_caps_is_equal (temp, temp2));
gst_caps_unref (temp2);
gst_caps_unref (temp);
}
}
gst_caps_unref (caps);
}
g_print ("\n\nSTATISTICS:\n");
g_print ("\nOf all caps tried\n");
g_print ("%3u (%02.4g%%) caps were already at minimum size.\n", impossible,
100.0 * ((double) impossible) / (impossible + success + failure));
g_print ("%3u (%02.4g%%) caps were successfully reduced.\n", success,
100.0 * ((double) success) / (impossible + success + failure));
g_print ("%3u (%02.4g%%) caps could not be reduced.\n", failure,
100.0 * ((double) failure) / (impossible + success + failure));
g_print ("\nOf all caps that could possibly be reduced\n");
g_print ("%02.4g%% were reduced\n",
100.0 * ((double) success) / (success + failure));
g_print ("%02.4g%% average reduction in caps structure amount\n",
100.0 * (1.0 - ((double) size_after) / size_before));
g_print ("%02.4g%% average reduction in caps serialization length\n",
100.0 * (1.0 - ((double) length_after) / length_before));
return 0;
}