mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 08:17:01 +00:00
111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
#include <gst/gst.h>
|
|
|
|
|
|
/*
|
|
* this example uses tee, fakesrc, fakesink and lame
|
|
*
|
|
* it requests a new pad from tee and attaches lame and fakesink
|
|
* after iterating
|
|
* it requests another one
|
|
* this is to test if the encoder is initialized ok when adding to a
|
|
* pipe that has played
|
|
*/
|
|
|
|
static void
|
|
error_callback (GObject * object, GstObject * orig, gchar * error)
|
|
{
|
|
g_print ("ERROR: %s: %s\n", GST_OBJECT_NAME (orig), error);
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
GstElement *pipeline;
|
|
GstElement *src, *tee, *encoder1, *encoder2, *sink1, *sink2;
|
|
GstPad *teepad1, *teepad2;
|
|
GstCaps *caps;
|
|
|
|
|
|
gst_init (&argc, &argv);
|
|
|
|
/* create elements */
|
|
if (!(pipeline = gst_element_factory_make ("pipeline", "pipeline")))
|
|
return 1;
|
|
if (!(src = gst_element_factory_make ("fakesrc", "source")))
|
|
return 1;
|
|
if (!(tee = gst_element_factory_make ("tee", "tee")))
|
|
return 1;
|
|
if (!(encoder1 = gst_element_factory_make ("lame", "lame1")))
|
|
return 1;
|
|
if (!(encoder2 = gst_element_factory_make ("lame", "lame2")))
|
|
return 1;
|
|
if (!(sink1 = gst_element_factory_make ("fakesink", "sink1")))
|
|
return 1;
|
|
if (!(sink2 = gst_element_factory_make ("fakesink", "sink2")))
|
|
return 1;
|
|
|
|
pipeline = gst_pipeline_new ("pipeline");
|
|
g_signal_connect (pipeline, "error", G_CALLBACK (error_callback), NULL);
|
|
|
|
/* set up input */
|
|
g_print ("setting up input\n");
|
|
gst_bin_add (GST_BIN (pipeline), src);
|
|
gst_bin_add (GST_BIN (pipeline), tee);
|
|
gst_pad_link (gst_element_get_pad (src, "src"),
|
|
gst_element_get_pad (tee, "sink"));
|
|
|
|
/* set up fakesrc */
|
|
g_object_set (G_OBJECT (src), "filltype", 3, NULL);
|
|
g_object_set (G_OBJECT (src), "sizetype", 3, NULL);
|
|
|
|
/* set caps on fakesrc */
|
|
caps = GST_CAPS_NEW ("input audio",
|
|
"audio/raw",
|
|
"format", GST_PROPS_STRING ("int"),
|
|
"rate", GST_PROPS_INT (44100),
|
|
"width", GST_PROPS_INT (16),
|
|
"depth", GST_PROPS_INT (16),
|
|
"law", GST_PROPS_INT (0),
|
|
"signed", GST_PROPS_BOOLEAN (TRUE), "channels", GST_PROPS_INT (1)
|
|
);
|
|
|
|
g_object_set (G_OBJECT (src), "sizetype", 3, "filltype", 3, NULL);
|
|
|
|
|
|
gst_element_set_state (pipeline, GST_STATE_READY);
|
|
g_print ("Setting caps on fakesrc's src pad\n");
|
|
if (gst_pad_try_set_caps (gst_element_get_pad (src, "src"), caps) <= 0)
|
|
g_print ("Could not set caps !\n");
|
|
|
|
/* request first pad from tee and connect */
|
|
g_print ("attaching first output pipe to tee\n");
|
|
teepad1 = gst_element_request_pad_by_name (tee, "src%d");
|
|
|
|
gst_bin_add (GST_BIN (pipeline), encoder1);
|
|
gst_bin_add (GST_BIN (pipeline), sink1);
|
|
gst_pad_link (teepad1, gst_element_get_pad (encoder1, "sink"));
|
|
gst_pad_link (gst_element_get_pad (encoder1, "src"),
|
|
gst_element_get_pad (sink1, "sink"));
|
|
|
|
gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
|
/* iterate */
|
|
g_print ("iterate\n");
|
|
gst_bin_iterate (GST_BIN (pipeline));
|
|
gst_element_set_state (pipeline, GST_STATE_PAUSED);
|
|
|
|
/* request second pad and connect */
|
|
g_print ("attaching second output pipe to tee\n");
|
|
teepad2 = gst_element_request_pad_by_name (tee, "src%d");
|
|
|
|
gst_bin_add (GST_BIN (pipeline), encoder2);
|
|
gst_bin_add (GST_BIN (pipeline), sink2);
|
|
gst_pad_link (teepad2, gst_element_get_pad (encoder2, "sink"));
|
|
gst_pad_link (gst_element_get_pad (encoder2, "src"),
|
|
gst_element_get_pad (sink2, "sink"));
|
|
|
|
gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
|
g_print ("iterate\n");
|
|
gst_bin_iterate (GST_BIN (pipeline));
|
|
g_print ("done\n");
|
|
return 0;
|
|
}
|