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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <unistd.h>
#include <stdlib.h> /* exit */
#include <gst/gst.h>
static GMainLoop *loop;
static void
new_pad (GstElement * element, GstPad * pad, gboolean last, GstElement * sink)
{
g_print ("New pad...\n");
}
static void
no_more_pads (GstElement * element)
{
g_print ("No more pads...\n");
g_main_loop_quit (loop);
}
static gboolean
start_finding (GstElement * pipeline)
{
GstStateChangeReturn res;
g_print ("finding caps...\n");
res = gst_element_set_state (pipeline, GST_STATE_PAUSED);
if (res == GST_STATE_CHANGE_FAILURE) {
g_print ("could not pause\n");
exit (-1);
}
return FALSE;
}
static void
dump_element_stats (GstElement * element)
{
GstIterator *it;
gpointer data;
it = gst_element_iterate_src_pads (element);
while (gst_iterator_next (it, &data) == GST_ITERATOR_OK) {
GstPad *pad = GST_PAD (data);
GstCaps *caps;
gchar *str;
GstQuery *query;
g_print ("stream %s:\n", GST_OBJECT_NAME (pad));
caps = gst_pad_get_caps (pad);
str = gst_caps_to_string (caps);
g_print (" caps: %s\n", str);
g_free (str);
gst_caps_unref (caps);
query = gst_query_new_duration (GST_FORMAT_TIME);
if (gst_pad_query (pad, query)) {
gint64 duration;
gst_query_parse_duration (query, NULL, &duration);
g_print (" duration: %" GST_TIME_FORMAT "\n", GST_TIME_ARGS (duration));
}
gst_query_unref (query);
gst_object_unref (pad);
}
gst_iterator_free (it);
}
gint
main (gint argc, gchar * argv[])
{
GstElement *pipeline, *filesrc, *decodebin;
gst_init (&argc, &argv);
pipeline = gst_pipeline_new ("pipeline");
filesrc = gst_element_factory_make ("filesrc", "filesrc");
g_assert (filesrc);
decodebin = gst_element_factory_make ("decodebin", "decodebin");
g_assert (decodebin);
g_signal_connect (G_OBJECT (decodebin), "new-decoded-pad",
G_CALLBACK (new_pad), NULL);
g_signal_connect (G_OBJECT (decodebin), "no-more-pads",
G_CALLBACK (no_more_pads), NULL);
gst_bin_add_many (GST_BIN (pipeline), filesrc, decodebin, NULL);
gst_element_link (filesrc, decodebin);
if (argc < 2) {
g_print ("usage: %s <uri>\n", argv[0]);
exit (-1);
}
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
/* event based programming approach */
loop = g_main_loop_new (NULL, TRUE);
g_idle_add ((GSourceFunc) start_finding, pipeline);
g_main_loop_run (loop);
dump_element_stats (decodebin);
return 0;
}
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