/* 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 void

new_decoded_pad_cb (GstElement * decodebin, GstPad * new_pad, gboolean last,

    GstElement * pipeline)

{

  GstElement *fakesink;

  GstPad *sinkpad;

  fakesink = gst_element_factory_make ("fakesink", NULL);

  gst_bin_add (GST_BIN (pipeline), fakesink);

  sinkpad = gst_element_get_pad (fakesink, "sink");

  if (GST_PAD_LINK_FAILED (gst_pad_link (new_pad, sinkpad))) {

    g_warning ("Failed to link %s:%s to %s:%s", GST_DEBUG_PAD_NAME (new_pad),

        GST_DEBUG_PAD_NAME (sinkpad));

    gst_bin_remove (GST_BIN (pipeline), fakesink);

  } else {

    gst_element_set_state (fakesink, GST_STATE_PAUSED);

  }

}

static void

show_error (const gchar * errmsg, GstBus * bus)

{

  GstMessage *msg;

  GError *err = NULL;

  gchar *dbg = NULL;

  msg = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0);

  if (msg) {

    g_assert (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ERROR);

    gst_message_parse_error (msg, &err, &dbg);

  }

  g_print ("ERROR: %s\n", errmsg);

  g_print ("       %s\n", (err) ? err->message : "");

  if (dbg) {

    g_print ("\ndebug: %s\n\n", dbg);

    g_free (dbg);

  }

  if (err)

    g_error_free (err);

}

gint

main (gint argc, gchar * argv[])

{

  GstElement *pipeline, *filesrc, *decodebin;

  GstStateChangeReturn res;

  GstIterator *it;

  GstBus *bus;

  gpointer data;

  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);

  gst_bin_add_many (GST_BIN (pipeline), filesrc, decodebin, NULL);

  gst_element_link (filesrc, decodebin);

  if (argc < 2) {

    g_print ("usage: %s <filenames>\n", argv[0]);

    exit (-1);

  }

  if (!g_str_has_prefix (argv[1], "file://")) {

    g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);

  } else {

    g_object_set (G_OBJECT (filesrc), "location", argv[1] + 7, NULL);

  }

  /* we've got to connect fakesinks to newly decoded pads to make sure

   * buffers have actually been flowing over those pads and caps have

   * been set on them. decodebin might insert internal queues and

   * without fakesinks it's pot-luck what caps we get from the pad, because

   * it depends on whether the queues have started pushing buffers yet or not.

   * With fakesinks we make sure that the pipeline doesn't go to PAUSED state

   * before each fakesink has a buffer queued. */

  g_signal_connect (decodebin, "new-decoded-pad",

      G_CALLBACK (new_decoded_pad_cb), pipeline);

  bus = gst_element_get_bus (pipeline);

  g_print ("pause..\n");

  res = gst_element_set_state (pipeline, GST_STATE_PAUSED);

  if (res == GST_STATE_CHANGE_FAILURE) {

    show_error ("Could not go to PAUSED state", bus);

    exit (-1);

  }

  g_print ("waiting..\n");

  res = gst_element_get_state (pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);

  if (res != GST_STATE_CHANGE_SUCCESS) {

    show_error ("Failed to complete state change to PAUSED", bus);

    exit (-1);

  }

  g_print ("stats..\n");

  it = gst_element_iterate_src_pads (decodebin);

  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);

  return 0;

}