gstreamer/subprojects/gst-plugins-base/tests/interactive/playback/test3.c

/* 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., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */
#include <gst/gst.h>

#define UPDATE_INTERVAL 500

static gboolean
update_scale (GstElement * element)
{
  gint64 duration = -1;
  gint64 position = -1;
  gchar dur_str[32], pos_str[32];

  if (gst_element_query_position (element, GST_FORMAT_TIME, &position) &&
      position != -1) {
    g_snprintf (pos_str, 32, "%" GST_TIME_FORMAT, GST_TIME_ARGS (position));
  } else {
    g_snprintf (pos_str, 32, "-:--:--.---------");
  }

  if (gst_element_query_duration (element, GST_FORMAT_TIME, &duration) &&
      duration != -1) {
    g_snprintf (dur_str, 32, "%" GST_TIME_FORMAT, GST_TIME_ARGS (duration));
  } else {
    g_snprintf (dur_str, 32, "-:--:--.---------");
  }

  g_print ("%s / %s\n", pos_str, dur_str);

  return TRUE;
}

static void
warning_cb (GstBus * bus, GstMessage * msg, gpointer foo)
{
  GError *err = NULL;
  gchar *dbg = NULL;

  gst_message_parse_warning (msg, &err, &dbg);

  g_printerr ("WARNING: %s (%s)\n", err->message, (dbg) ? dbg : "no details");

  g_error_free (err);
  g_free (dbg);
}

static void
error_cb (GstBus * bus, GstMessage * msg, GMainLoop * main_loop)
{
  GError *err = NULL;
  gchar *dbg = NULL;

  gst_message_parse_error (msg, &err, &dbg);

  g_printerr ("ERROR: %s (%s)\n", err->message, (dbg) ? dbg : "no details");

  g_main_loop_quit (main_loop);

  g_error_free (err);
  g_free (dbg);
}

static void
eos_cb (GstBus * bus, GstMessage * msg, GMainLoop * main_loop)
{
  g_print ("EOS\n");
  g_main_loop_quit (main_loop);
}


gint
main (gint argc, gchar * argv[])
{
  GstStateChangeReturn res;
  GstElement *player;
  GMainLoop *loop;
  GstBus *bus;

  gst_init (&argc, &argv);

  loop = g_main_loop_new (NULL, TRUE);

  player = gst_element_factory_make ("playbin", "player");
  g_assert (player);

  bus = gst_pipeline_get_bus (GST_PIPELINE (player));
  gst_bus_add_signal_watch (bus);

  g_signal_connect (bus, "message::eos", G_CALLBACK (eos_cb), loop);
  g_signal_connect (bus, "message::error", G_CALLBACK (error_cb), loop);
  g_signal_connect (bus, "message::warning", G_CALLBACK (warning_cb), NULL);

  g_object_set (G_OBJECT (player), "uri", argv[1], NULL);

  res = gst_element_set_state (player, GST_STATE_PLAYING);
  if (res == GST_STATE_CHANGE_FAILURE) {
    g_print ("could not play\n");
    return -1;
  }

  g_timeout_add (UPDATE_INTERVAL, (GSourceFunc) update_scale, player);

  g_main_loop_run (loop);

  /* tidy up */
  gst_element_set_state (player, GST_STATE_NULL);
  gst_object_unref (player);
  gst_object_unref (bus);

  return 0;
}