gstreamer/testsuite/alsa/state.c

/*
 * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
 *
 * state.c: Tests alsasink for state changes
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "sinesrc.h"

GstElement *pipeline;

static void
set_state (GstElementState state)
{
  GstElementState old_state = gst_element_get_state (pipeline);

  g_print ("Setting state from %s to %s...",
      gst_element_state_get_name (old_state),
      gst_element_state_get_name (state));

  if (!gst_element_set_state (pipeline, state)) {
    g_print (" ERROR\n");
    exit (-1);
  }

  if (state == GST_STATE_PLAYING) {
    gint i;

    g_print (" DONE - iterating a bit...");
    for (i = 0; i < 400; i++) {
      if (!gst_bin_iterate (GST_BIN (pipeline))) {
        g_print (" ERROR in iteration %d\n", i);
        exit (-2);
      }
    }
  }
  g_print (" DONE\n");
}

static void
create_pipeline (void)
{
  GstElement *src;
  SineSrc *sinesrc;
  GstElement *alsasink;

  pipeline = gst_pipeline_new ("pipeline");
  src = sinesrc_new ();
  alsasink = gst_element_factory_make ("alsasink", "alsasink");

  gst_bin_add_many (GST_BIN (pipeline), src, alsasink, NULL);
  gst_element_link (src, alsasink);

  /* prepare our sinesrc */
  sinesrc = (SineSrc *) src;
  sinesrc->newcaps = TRUE;
  sinesrc->type = SINE_SRC_INT;
  sinesrc->sign = TRUE;
  sinesrc->endianness = G_BYTE_ORDER;
  sinesrc->depth = 16;
  sinesrc->width = 16;
}

gint
main (gint argc, gchar * argv[])
{
  gst_init (&argc, &argv);

  g_print ("\n"
      "This test will check if state changes work on the alsasink.\n"
      "You will hear some short sine tones on your default ALSA soundcard,\n"
      "but they are not important in this test.\n" "\n");
  create_pipeline ();

  /* simulate some state changes here */
  set_state (GST_STATE_READY);
  set_state (GST_STATE_NULL);
  set_state (GST_STATE_READY);
  set_state (GST_STATE_NULL);
  set_state (GST_STATE_PAUSED);
  set_state (GST_STATE_NULL);
  set_state (GST_STATE_PLAYING);
  set_state (GST_STATE_PAUSED);
  set_state (GST_STATE_PLAYING);
  set_state (GST_STATE_READY);
  set_state (GST_STATE_PLAYING);
  set_state (GST_STATE_NULL);
  set_state (GST_STATE_PLAYING);

  g_print ("The alsa plugin mastered another test.\n");

  gst_object_unref (pipeline);

  return 0;
}