mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 18:21:04 +00:00
ae7fb01363
Original commit message from CVS: * gst/gstvalue.c: (gst_greatest_common_divisor): use ints and return ints, fractions only use ints, too, so this avoids accidently casting multiplications to unsigned (gst_value_lcopy_fraction): it's ints, not uint32 (gst_value_set_fraction): disallow minint, multiplying and negation are broken with it (gst_value_fraction_multiply): fix to make large numbers work and get rid of the assumption that the multiplication of two ints fits an int64 - dunno if that's true for all systems * testsuite/caps/Makefile.am: * testsuite/caps/fraction-multiply-and-zero.c: (check_multiplication), (check_equal), (zero_test), (main): add tests for all the stuff above * testsuite/caps/value_compare.c: (test1): fix comment * tests/.cvsignore: * testsuite/caps/.cvsignore: * testsuite/debug/.cvsignore: * testsuite/dlopen/.cvsignore: * testsuite/states/.cvsignore: get up to date
131 lines
4 KiB
C
131 lines
4 KiB
C
/* GStreamer
|
|
*
|
|
* fraction.c: test for all GstFraction operations
|
|
*
|
|
* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <gst/gst.h>
|
|
#include <glib.h>
|
|
|
|
static void
|
|
check_multiplication (int num1, int den1, int num2, int den2, int num_result,
|
|
int den_result)
|
|
{
|
|
GValue value1 = { 0 };
|
|
GValue value2 = { 0 };
|
|
GValue value3 = { 0 };
|
|
|
|
g_value_init (&value1, GST_TYPE_FRACTION);
|
|
g_value_init (&value2, GST_TYPE_FRACTION);
|
|
g_value_init (&value3, GST_TYPE_FRACTION);
|
|
|
|
gst_value_set_fraction (&value1, num1, den1);
|
|
gst_value_set_fraction (&value2, num2, den2);
|
|
g_print ("%d/%d * %d/%d = ", num1, den1, num2, den2);
|
|
gst_value_fraction_multiply (&value3, &value1, &value2);
|
|
g_print ("%d/%d (should be %d/%d)\n",
|
|
gst_value_get_fraction_numerator (&value3),
|
|
gst_value_get_fraction_denominator (&value3), num_result, den_result);
|
|
g_assert (gst_value_get_fraction_numerator (&value3) == num_result);
|
|
g_assert (gst_value_get_fraction_denominator (&value3) == den_result);
|
|
|
|
g_value_unset (&value1);
|
|
g_value_unset (&value2);
|
|
g_value_unset (&value3);
|
|
}
|
|
|
|
static void
|
|
check_equal (int num1, int den1, int num2, int den2)
|
|
{
|
|
GValue value1 = { 0 };
|
|
GValue value2 = { 0 };
|
|
|
|
g_value_init (&value1, GST_TYPE_FRACTION);
|
|
g_value_init (&value2, GST_TYPE_FRACTION);
|
|
|
|
gst_value_set_fraction (&value1, num1, den1);
|
|
gst_value_set_fraction (&value2, num2, den2);
|
|
g_print ("%d/%d == %d/%d ? ", num1, den1, num2, den2);
|
|
g_assert (gst_value_compare (&value1, &value2) == GST_VALUE_EQUAL);
|
|
g_print ("yes\n");
|
|
|
|
g_value_unset (&value1);
|
|
g_value_unset (&value2);
|
|
}
|
|
|
|
static void
|
|
zero_test (void)
|
|
{
|
|
GValue value1 = { 0 };
|
|
|
|
g_value_init (&value1, GST_TYPE_FRACTION);
|
|
|
|
/* fractions are initialized at 0 */
|
|
g_assert (gst_value_get_fraction_numerator (&value1) == 0);
|
|
g_assert (gst_value_get_fraction_denominator (&value1) == 1);
|
|
|
|
/* every zero value is set to 0/1 */
|
|
gst_value_set_fraction (&value1, 0, 235);
|
|
g_assert (gst_value_get_fraction_numerator (&value1) == 0);
|
|
g_assert (gst_value_get_fraction_denominator (&value1) == 1);
|
|
gst_value_set_fraction (&value1, 0, -G_MAXINT);
|
|
g_assert (gst_value_get_fraction_numerator (&value1) == 0);
|
|
g_assert (gst_value_get_fraction_denominator (&value1) == 1);
|
|
|
|
g_value_unset (&value1);
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
GValue value1 = { 0 };
|
|
GValue value2 = { 0 };
|
|
GValue value3 = { 0 };
|
|
|
|
gst_init (&argc, &argv);
|
|
|
|
g_value_init (&value1, GST_TYPE_FRACTION);
|
|
g_value_init (&value2, GST_TYPE_FRACTION);
|
|
g_value_init (&value3, GST_TYPE_FRACTION);
|
|
|
|
/*** zeroes ***/
|
|
|
|
/* basic zero tests */
|
|
zero_test ();
|
|
|
|
/* check all zeroes are zeroes */
|
|
check_equal (0, 1, 0, 12345);
|
|
check_equal (0, 1, 0, -1);
|
|
|
|
/* check multiplying with zeroes results in zeroes */
|
|
check_multiplication (0, 1, 17, 18, 0, 1);
|
|
check_multiplication (0, -13, -G_MAXINT, 2736, 0, 1);
|
|
|
|
/*** large numbers ***/
|
|
|
|
/* check multiplying large numbers works */
|
|
check_multiplication (G_MAXINT, 1, G_MAXINT - 1, G_MAXINT, G_MAXINT - 1, 1);
|
|
check_multiplication (-G_MAXINT, 1, -G_MAXINT + 1, -G_MAXINT, -G_MAXINT + 1,
|
|
1);
|
|
check_multiplication (G_MAXINT / 28, 459, -28, -G_MAXINT / 459,
|
|
G_MAXINT / 28 * 28, G_MAXINT / 459 * 459);
|
|
check_multiplication (3117 * 13, -17, 3117 * 17, 13, -3117 * 3117, 1);
|
|
|
|
return 0;
|
|
}
|