gstreamer/tests/sched/dynamic-pipeline.c

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#include <gst/gst.h>
/* This test will fail because it tries to allocate two cothread_context's in
* one thread. This will cause a segfault. This is a problem with gstreamer's
* cothreading that is fixed in the newer cothreads package.
*/
int
main (int argc, char *argv[])
{
GstElement *fakesrc, *fakesink1, *fakesink2, *pipe1, *pipe2;
gst_init (&argc, &argv);
if (argc != 1) {
g_print ("usage: %s\n", argv[0]);
exit (-1);
}
fakesrc = gst_element_factory_make ("fakesrc", "fakesrc");
fakesink1 = gst_element_factory_make ("fakesink", "fakesink1");
fakesink2 = gst_element_factory_make ("fakesink", "fakesink2");
/* a crucial part of this test (and one that the old cothreads fails on) is
having two active pipelines in the same thread. */
pipe1 = gst_pipeline_new ("pipe1");
pipe2 = gst_pipeline_new ("pipe2");
/* make the first pipeline */
gst_bin_add (GST_BIN (pipe1), fakesrc);
gst_bin_add (GST_BIN (pipe1), fakesink1);
gst_element_link_pads (fakesrc, "src", fakesink1, "sink");
/* initialize cothreads */
gst_element_set_state (pipe1, GST_STATE_PLAYING);
gst_element_set_state (pipe1, GST_STATE_READY);
/* destroy the fakesink, but keep fakesrc (its state is GST_STATE_READY) */
gst_element_unlink_pads (fakesrc, "src", fakesink1, "sink");
gst_object_ref (fakesrc);
gst_bin_remove (GST_BIN (pipe1), fakesrc);
g_usleep (2 * G_USEC_PER_SEC);
gst_bin_remove (GST_BIN (pipe1), fakesink1);
gst_object_unref (pipe1);
/* make a new pipeline */
gst_bin_add (GST_BIN (pipe2), fakesink2);
/* don't change the new pipeline's state, it should change on the bin_add */
gst_bin_add (GST_BIN (pipe2), fakesrc);
gst_element_link_pads (fakesrc, "src", fakesink2, "sink");
/* show the pipeline state */
gst_xml_write_file (GST_ELEMENT (pipe2), stdout);
/* try to iterate the pipeline */
gst_element_set_state (pipe2, GST_STATE_PLAYING);
g_usleep (2 * G_USEC_PER_SEC);
gst_element_set_state (pipe2, GST_STATE_NULL);
return 0;
}