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/*
* test for tee element
* this tests for proxying of caps from tee sink to src's in various situations
* it also tests if you get a good, unique pad when requesting a third one
* which shows a bug in 0.3.2 :
* request pad, get 0
* request pad, get 1
* remove pad 0,
* request pad, get 1 (number of pads), already exists, assert fail
*
* thomas@apestaart.org
* originally written for 0.3.2
*/
#include <gst/gst.h>
#include <property.h>
GstElement *
element_create (char *name, char *element)
/*
* create the element
* print an error if it can't be created
* return NULL if it couldn't be created
* return element if it did work
*/
{
GstElement *el = NULL;
el = (GstElement *) gst_element_factory_make (element, name);
if (el == NULL)
{
fprintf (stderr, "Could not create element %s (%s) !\n", name, element);
return NULL;
}
else
return el;
}
int
main (int argc, char *argv[])
{
GstElement *pipeline = NULL;
GstElement *tee, *src, *sink1, *sink2;
GstPad *tee_src1, *tee_src2;
GstCaps *src_caps = NULL;
GstCaps *sink_caps = NULL;
GstStructure *structure = NULL;
GstPad *pad = NULL;
/* init */
gst_init (&argc, &argv);
/* create */
g_print ("Creating pipeline\n");
pipeline = gst_pipeline_new ("pipeline");
g_print ("Connecting signals to pipeline\n");
g_signal_connect (pipeline, "deep_notify", G_CALLBACK (property_change_callback), NULL);
g_print ("Creating elements\n");
if (!(tee = element_create ("tee", "tee"))) return 1;
if (!(src = element_create ("src", "fakesrc"))) return 1;
g_object_set (G_OBJECT (src), "sizetype", 2, NULL);
if (!(sink1 = element_create ("sink1", "fakesink"))) return 1;
if (!(sink2 = element_create ("sink2", "fakesink"))) return 1;
/* add */
g_print ("Adding elements to bin\n");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), tee);
/* link input part */
g_print ("Linking input elements\n");
gst_pad_link (gst_element_get_pad (src, "src"),
gst_element_get_pad (tee, "sink"));
/* request one pad from tee */
g_print ("Requesting first pad\n");
tee_src1 = gst_element_get_request_pad (tee, "src%d");
gst_bin_add (GST_BIN (pipeline), sink1);
gst_pad_link (tee_src1, gst_element_get_pad (sink1, "sink"));
/* set to play */
g_print ("Doing 1 iteration\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
gst_bin_iterate (GST_BIN (pipeline));
/* pause and request another pad */
g_print ("Requesting second pad\n");
gst_element_set_state (pipeline, GST_STATE_PAUSED);
tee_src2 = gst_element_get_request_pad (tee, "src%d");
gst_bin_add (GST_BIN (pipeline), sink2);
gst_pad_link (tee_src2, gst_element_get_pad (sink2, "sink"));
/* now we have two fakesinks linked, iterate */
g_print ("Doing 1 iteration\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
gst_bin_iterate (GST_BIN (pipeline));
/* now we try setting caps on the src pad */
/* FIXME: should we set to pause here ? */
src_caps = gst_caps_from_string ("audio/raw, format=(s)\"int\", "
"rate=(i)44100");
g_assert (src_caps != NULL);
g_print ("Setting caps on fakesrc's src pad\n");
pad = gst_element_get_pad (src, "src");
if ((gst_pad_try_set_caps (pad, src_caps)) <= 0) {
g_print ("Could not set caps !\n");
}
/* now iterate and see if it proxies caps ok */
gst_bin_iterate (GST_BIN (pipeline));
sink_caps = gst_pad_get_caps (gst_element_get_pad (sink1, "sink"));
if (sink_caps && gst_caps_is_fixed (sink_caps)) {
structure = gst_caps_get_structure (sink_caps, 0);
}else {
structure = NULL;
g_print ("sink_caps is not fixed\n");
}
if (structure == NULL || !(gst_structure_has_field (structure, "rate"))) {
g_print ("Hm, rate has not been propagated to sink1.\n");
return 1;
} else {
int rate;
gst_structure_get_int (structure, "rate", &rate);
g_print ("Rate of pad on sink1 : %d\n", rate);
}
sink_caps = gst_pad_get_caps (gst_element_get_pad (sink2, "sink"));
structure = gst_caps_get_structure (sink_caps, 0);
if (structure != NULL && ! (gst_structure_has_field (structure, "rate"))) {
g_print ("Hm, rate has not been propagated to sink2.\n");
return 1;
} else {
int rate;
gst_structure_get_int (structure, "rate", &rate);
g_print ("Rate of pad on sink2 : %d\n", rate);
}
/* remove the first one, iterate */
g_print ("Removing first sink\n");
gst_element_set_state (pipeline, GST_STATE_PAUSED);
gst_pad_unlink (tee_src1, gst_element_get_pad (sink1, "sink"));
gst_bin_remove (GST_BIN (pipeline), sink1);
/* only second fakesink linked, iterate */
g_print ("Doing 1 iteration\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
gst_bin_iterate (GST_BIN (pipeline));
/* request another pad */
g_print ("Requesting third pad\n");
gst_element_set_state (pipeline, GST_STATE_PAUSED);
/* in 0.3.2 the next statement gives an assert error */
tee_src1 = gst_element_get_request_pad (tee, "src%d");
gst_element_set_state (pipeline, GST_STATE_NULL);
g_print ("Done !\n");
return 0;
}
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