gstreamer/testsuite/caps/audioscale.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
/* Element-Checklist-Version: 5 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <math.h>
#include <gst/gst.h>
static void
gst_audioscale_expand_value (GValue * dest, const GValue * src)
{
int rate_min, rate_max;
if (G_VALUE_TYPE (src) == G_TYPE_INT ||
G_VALUE_TYPE (src) == GST_TYPE_INT_RANGE) {
if (G_VALUE_TYPE (src) == G_TYPE_INT) {
rate_min = g_value_get_int (src);
rate_max = rate_min;
} else {
rate_min = gst_value_get_int_range_min (src);
rate_max = gst_value_get_int_range_max (src);
}
rate_min /= 2;
if (rate_min < 1)
rate_min = 1;
if (rate_max < G_MAXINT / 2) {
rate_max *= 2;
} else {
rate_max = G_MAXINT;
}
g_value_init (dest, GST_TYPE_INT_RANGE);
gst_value_set_int_range (dest, rate_min, rate_max);
return;
}
if (G_VALUE_TYPE (src) == GST_TYPE_LIST) {
int i;
g_value_init (dest, GST_TYPE_LIST);
for (i = 0; i < gst_value_list_get_size (src); i++) {
const GValue *s = gst_value_list_get_value (src, i);
GValue d = { 0 };
int j;
gst_audioscale_expand_value (&d, s);
for (j = 0; j < gst_value_list_get_size (dest); j++) {
const GValue *s2 = gst_value_list_get_value (dest, j);
GValue d2 = { 0 };
gst_value_union (&d2, &d, s2);
if (G_VALUE_TYPE (&d2) == GST_TYPE_INT_RANGE) {
g_value_unset ((GValue *) s2);
gst_value_init_and_copy ((GValue *) s2, &d2);
break;
}
g_value_unset (&d2);
}
if (j == gst_value_list_get_size (dest)) {
gst_value_list_append_value (dest, &d);
}
g_value_unset (&d);
}
if (gst_value_list_get_size (dest) == 1) {
const GValue *s = gst_value_list_get_value (dest, 0);
GValue d = { 0 };
gst_value_init_and_copy (&d, s);
g_value_unset (dest);
gst_value_init_and_copy (dest, &d);
g_value_unset (&d);
}
return;
}
GST_ERROR ("unexpected value type");
}
static GstCaps *
gst_audioscale_getcaps (const GstCaps * othercaps)
{
GstCaps *caps;
int i;
caps = gst_caps_copy (othercaps);
/* we do this hack, because the audioscale lib doesn't handle
* rate conversions larger than a factor of 2 */
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure = gst_caps_get_structure (caps, i);
const GValue *value;
GValue dest = { 0 };
value = gst_structure_get_value (structure, "rate");
if (value == NULL) {
GST_ERROR ("caps structure doesn't have required rate field");
return NULL;
}
gst_audioscale_expand_value (&dest, value);
gst_structure_set_value (structure, "rate", &dest);
}
return caps;
}
void
test_caps (const char *s)
{
GstCaps *caps;
GstCaps *caps2;
char *s2;
caps = gst_caps_from_string (s);
caps2 = gst_audioscale_getcaps (caps);
s2 = gst_caps_to_string (caps2);
g_print ("original: %s\nfiltered: %s\n\n", s, s2);
g_free (s2);
gst_caps_unref (caps);
gst_caps_unref (caps2);
}
int
main (int argc, char *argv[])
{
gst_init (&argc, &argv);
test_caps ("audio/x-raw-int, rate=(int)1");
test_caps ("audio/x-raw-int, rate=(int)10");
test_caps ("audio/x-raw-int, rate=(int)100");
test_caps ("audio/x-raw-int, rate=(int)10000");
test_caps ("audio/x-raw-int, rate=(int)2000000000");
test_caps ("audio/x-raw-int, rate=(int)[1,100]");
test_caps ("audio/x-raw-int, rate=(int)[1000,40000]");
test_caps ("audio/x-raw-int, rate=(int){1,100}");
test_caps ("audio/x-raw-int, rate=(int){100,200,300}");
test_caps ("audio/x-raw-int, rate=(int){[100,200],1000}");
return 0;
}