gstreamer/testsuite/threads/threadd.c

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#include <gst/gst.h>
#include <unistd.h>
/* threadc.c
* this tests if we can make a GstThread, with enough cothreads to stress it
*/
#define MAX_IDENTITIES 29
#define RUNS_PER_IDENTITY 5
volatile gboolean running = FALSE;
/* must be volatile, we're going to fool the compiler */
volatile gboolean done = FALSE;
static void
construct_pipeline (GstElement * pipeline, gint identities)
{
GstElement *src, *sink, *identity = NULL;
GstElement *from;
int i;
src = gst_element_factory_make ("fakesrc", NULL);
sink = gst_element_factory_make ("fakesink", NULL);
g_assert (src);
g_assert (sink);
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
from = src;
for (i = 0; i < identities; ++i) {
identity = gst_element_factory_make ("identity", NULL);
g_assert (identity);
gst_bin_add (GST_BIN (pipeline), identity);
gst_element_link (from, identity);
from = identity;
}
gst_element_link (identity, sink);
g_object_set (G_OBJECT (src), "num_buffers", 10, "sizetype", 3, NULL);
}
void
state_changed (GstElement * el, gint arg1, gint arg2, gpointer user_data)
{
GstState state = gst_element_get_state (el);
g_print ("element %s has changed state to %s\n",
GST_ELEMENT_NAME (el), gst_element_state_get_name (state));
if (state == GST_STATE_PLAYING)
running = TRUE;
/* if we move from PLAYING to PAUSED, we're done */
if (state == GST_STATE_PAUSED && running)
done = TRUE;
}
int
main (gint argc, gchar * argv[])
{
int runs = MAX_IDENTITIES * RUNS_PER_IDENTITY;
int i;
gulong id;
GstElement *thread;
gst_init (&argc, &argv);
for (i = 0; i < runs; ++i) {
thread = gst_thread_new ("main_thread");
g_assert (thread);
/* connect state change signal */
id = g_signal_connect (G_OBJECT (thread), "state_change",
G_CALLBACK (state_changed), NULL);
construct_pipeline (thread, i / RUNS_PER_IDENTITY + 1);
g_print ("Setting thread to play with %d identities\n",
i / RUNS_PER_IDENTITY + 1);
done = FALSE;
if (gst_element_set_state (thread,
GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
g_warning ("failed to go to PLAYING");
} else {
g_print ("Waiting for thread PLAYING->PAUSED\n");
while (!done) /* do nothing */
;
}
running = FALSE;
g_print ("Coming out of the main GStreamer loop\n");
g_signal_handler_disconnect (G_OBJECT (thread), id);
gst_element_set_state (thread, GST_STATE_NULL);
g_print ("Unreffing thread\n");
g_object_unref (G_OBJECT (thread));
}
return 0;
}