gstreamer/tests/old/testsuite/negotiation/pad_link.c

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#include <gst/gst.h>
/* this test checks that gst_pad_link takes into account all available
* information when trying to link two pads.
* Because identity proxies caps, the caps in the first and second link
* must be compatible for this pipeline to work.
* Since they are not, the second linkig attempt should fail.
*/
gint
main (int argc, gchar ** argv)
{
GstElement *src, *identity, *sink;
GstCaps *one, *two;
gst_init (&argc, &argv);
/* create incompatible caps */
src = gst_element_factory_make ("fakesrc", NULL);
g_assert (src);
identity = gst_element_factory_make ("identity", NULL);
g_assert (identity);
sink = gst_element_factory_make ("fakesink", NULL);
g_assert (sink);
one = gst_caps_from_string ("some/mime");
two = gst_caps_from_string ("other/mime");
g_assert (GST_PAD_LINK_SUCCESSFUL (gst_pad_link_filtered (gst_element_get_pad
(src, "src"), gst_element_get_pad (identity, "sink"), one)));
g_assert (!GST_PAD_LINK_SUCCESSFUL (gst_pad_link_filtered (gst_element_get_pad
(identity, "src"), gst_element_get_pad (sink, "sink"), two)));
return 0;
}