basesrc.c

gnash 在pc和嵌入式下开发需要的源码

/* GStreamer
 *
 * some unit tests for GstBaseSrc
 *
 * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/check/gstcheck.h>
#include <gst/base/gstbasesrc.h>

static gboolean
eos_event_counter (GstObject * pad, GstEvent * event, guint * p_num_eos)
{
  fail_unless (event != NULL);
  fail_unless (GST_IS_EVENT (event));

  if (GST_EVENT_TYPE (event) == GST_EVENT_EOS)
    *p_num_eos += 1;

  return TRUE;
}

/* basesrc_eos_events_push_live_op:
 *  - make sure source does send an EOS event when operating in push
 *    mode and being set to READY explicitly (like one might with
 *    live sources)
 */
GST_START_TEST (basesrc_eos_events_push_live_op)
{
  GstStateChangeReturn state_ret;
  GstElement *src, *sink, *pipe;
  GstMessage *msg;
  GstBus *bus;
  GstPad *srcpad;
  guint probe, num_eos = 0;

  pipe = gst_pipeline_new ("pipeline");
  sink = gst_element_factory_make ("fakesink", "sink");
  src = gst_element_factory_make ("fakesrc", "src");

  g_assert (pipe != NULL);
  g_assert (sink != NULL);
  g_assert (src != NULL);

  fail_unless (gst_bin_add (GST_BIN (pipe), src) == TRUE);
  fail_unless (gst_bin_add (GST_BIN (pipe), sink) == TRUE);

  fail_unless (gst_element_link (src, sink) == TRUE);

  g_object_set (sink, "can-activate-push", TRUE, NULL);
  g_object_set (sink, "can-activate-pull", FALSE, NULL);

  g_object_set (src, "can-activate-push", TRUE, NULL);
  g_object_set (src, "can-activate-pull", FALSE, NULL);

  /* set up event probe to count EOS events */
  srcpad = gst_element_get_pad (src, "src");
  fail_unless (srcpad != NULL);

  probe = gst_pad_add_event_probe (srcpad,
      G_CALLBACK (eos_event_counter), &num_eos);

  bus = gst_element_get_bus (pipe);

  gst_element_set_state (pipe, GST_STATE_PLAYING);
  state_ret = gst_element_get_state (pipe, NULL, NULL, -1);
  fail_unless (state_ret == GST_STATE_CHANGE_SUCCESS);

  /* wait a second, then do controlled shutdown */
  g_usleep (GST_USECOND * 1);

  /* shut down source only (should send EOS event) ... */
  gst_element_set_state (src, GST_STATE_NULL);
  state_ret = gst_element_get_state (src, NULL, NULL, -1);
  fail_unless (state_ret == GST_STATE_CHANGE_SUCCESS);

  fail_unless (gst_element_set_locked_state (src, TRUE) == TRUE);

  /* ... and wait for the EOS message from the sink */
  msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
  fail_unless (msg != NULL);
  fail_unless (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
  fail_unless (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_EOS);

  /* should be exactly one EOS event */
  fail_unless (num_eos == 1);

  gst_element_set_state (pipe, GST_STATE_NULL);
  gst_element_get_state (pipe, NULL, NULL, -1);

  /* make sure source hasn't sent a second one when going PAUSED => READY */
  fail_unless (num_eos == 1);

  gst_pad_remove_event_probe (srcpad, probe);
  gst_object_unref (srcpad);
  gst_message_unref (msg);
  gst_object_unref (bus);
  gst_object_unref (pipe);
}

GST_END_TEST;

/* basesrc_eos_events_push:
 *  - make sure source only sends one EOS when operating in push-mode,
 *    reaching the max number of buffers, and is then shut down.
 */
GST_START_TEST (basesrc_eos_events_push)
{
  GstStateChangeReturn state_ret;
  GstElement *src, *sink, *pipe;
  GstMessage *msg;
  GstBus *bus;
  GstPad *srcpad;
  guint probe, num_eos = 0;

  pipe = gst_pipeline_new ("pipeline");
  sink = gst_element_factory_make ("fakesink", "sink");
  src = gst_element_factory_make ("fakesrc", "src");

  g_assert (pipe != NULL);
  g_assert (sink != NULL);
  g_assert (src != NULL);

  fail_unless (gst_bin_add (GST_BIN (pipe), src) == TRUE);
  fail_unless (gst_bin_add (GST_BIN (pipe), sink) == TRUE);

  fail_unless (gst_element_link (src, sink) == TRUE);

  g_object_set (sink, "can-activate-push", TRUE, NULL);
  g_object_set (sink, "can-activate-pull", FALSE, NULL);

  g_object_set (src, "can-activate-push", TRUE, NULL);
  g_object_set (src, "can-activate-pull", FALSE, NULL);
  g_object_set (src, "num-buffers", 8, NULL);

  /* set up event probe to count EOS events */
  srcpad = gst_element_get_pad (src, "src");
  fail_unless (srcpad != NULL);

  probe = gst_pad_add_event_probe (srcpad,
      G_CALLBACK (eos_event_counter), &num_eos);

  bus = gst_element_get_bus (pipe);

  gst_element_set_state (pipe, GST_STATE_PLAYING);
  state_ret = gst_element_get_state (pipe, NULL, NULL, -1);
  fail_unless (state_ret == GST_STATE_CHANGE_SUCCESS);

  msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
  fail_unless (msg != NULL);
  fail_unless (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
  fail_unless (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_EOS);

  /* should be exactly one EOS event */
  fail_unless (num_eos == 1);

  gst_element_set_state (pipe, GST_STATE_NULL);
  gst_element_get_state (pipe, NULL, NULL, -1);

  /* make sure source hasn't sent a second one when going PAUSED => READY */
  fail_unless (num_eos == 1);

  gst_pad_remove_event_probe (srcpad, probe);
  gst_object_unref (srcpad);
  gst_message_unref (msg);
  gst_object_unref (bus);
  gst_object_unref (pipe);
}

GST_END_TEST;

/* basesrc_eos_events_pull_live_op:
 *  - make sure source doesn't send an EOS event when operating in
 *    pull mode and being set to READY explicitly (like one might with
 *    live sources)
 */
GST_START_TEST (basesrc_eos_events_pull_live_op)
{
  GstStateChangeReturn state_ret;
  GstElement *src, *sink, *pipe;
  GstPad *srcpad;
  guint probe, num_eos = 0;

  pipe = gst_pipeline_new ("pipeline");
  sink = gst_element_factory_make ("fakesink", "sink");
  src = gst_element_factory_make ("fakesrc", "src");

  g_assert (pipe != NULL);
  g_assert (sink != NULL);
  g_assert (src != NULL);

  fail_unless (gst_bin_add (GST_BIN (pipe), src) == TRUE);
  fail_unless (gst_bin_add (GST_BIN (pipe), sink) == TRUE);

  fail_unless (gst_element_link (src, sink) == TRUE);

  g_object_set (sink, "can-activate-push", FALSE, NULL);
  g_object_set (sink, "can-activate-pull", TRUE, NULL);

  g_object_set (src, "can-activate-push", FALSE, NULL);
  g_object_set (src, "can-activate-pull", TRUE, NULL);

  /* set up event probe to count EOS events */
  srcpad = gst_element_get_pad (src, "src");
  fail_unless (srcpad != NULL);

  probe = gst_pad_add_event_probe (srcpad,
      G_CALLBACK (eos_event_counter), &num_eos);

  gst_element_set_state (pipe, GST_STATE_PLAYING);
  state_ret = gst_element_get_state (pipe, NULL, NULL, -1);
  fail_unless (state_ret == GST_STATE_CHANGE_SUCCESS);

  /* wait a second, then do controlled shutdown */
  g_usleep (GST_USECOND * 1);

  /* shut down source only ... */
  gst_element_set_state (src, GST_STATE_NULL);
  state_ret = gst_element_get_state (src, NULL, NULL, -1);
  fail_unless (state_ret == GST_STATE_CHANGE_SUCCESS);

  fail_unless (gst_element_set_locked_state (src, TRUE) == TRUE);

  /* source shouldn't have sent any EOS event in pull mode */
  fail_unless (num_eos == 0);

  gst_element_set_state (pipe, GST_STATE_NULL);
  gst_element_get_state (pipe, NULL, NULL, -1);

  /* make sure source hasn't sent an EOS when going PAUSED => READY either */
  fail_unless (num_eos == 0);

  gst_pad_remove_event_probe (srcpad, probe);
  gst_object_unref (srcpad);
  gst_object_unref (pipe);
}

GST_END_TEST;

/* basesrc_eos_events_pull:
 *  - makes sure source doesn't send EOS event when reaching the max.
 *    number of buffers configured in pull-mode
 *  - make sure source doesn't send EOS event either when being shut down
 *    (PAUSED => READY state change) after EOSing in pull mode 
 */
GST_START_TEST (basesrc_eos_events_pull)
{
  GstStateChangeReturn state_ret;
  GstElement *src, *sink, *pipe;
  GstMessage *msg;
  GstBus *bus;
  GstPad *srcpad;
  guint probe, num_eos = 0;

  pipe = gst_pipeline_new ("pipeline");
  sink = gst_element_factory_make ("fakesink", "sink");
  src = gst_element_factory_make ("fakesrc", "src");

  g_assert (pipe != NULL);
  g_assert (sink != NULL);
  g_assert (src != NULL);

  fail_unless (gst_bin_add (GST_BIN (pipe), src) == TRUE);
  fail_unless (gst_bin_add (GST_BIN (pipe), sink) == TRUE);

  fail_unless (gst_element_link (src, sink) == TRUE);

  g_object_set (sink, "can-activate-push", FALSE, NULL);
  g_object_set (sink, "can-activate-pull", TRUE, NULL);

  g_object_set (src, "can-activate-push", FALSE, NULL);
  g_object_set (src, "can-activate-pull", TRUE, NULL);
  g_object_set (src, "num-buffers", 8, NULL);

  /* set up event probe to count EOS events */
  srcpad = gst_element_get_pad (src, "src");
  fail_unless (srcpad != NULL);

  probe = gst_pad_add_event_probe (srcpad,
      G_CALLBACK (eos_event_counter), &num_eos);

  bus = gst_element_get_bus (pipe);

  gst_element_set_state (pipe, GST_STATE_PLAYING);
  state_ret = gst_element_get_state (pipe, NULL, NULL, -1);
  fail_unless (state_ret == GST_STATE_CHANGE_SUCCESS);

  msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
  fail_unless (msg != NULL);
  fail_unless (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ERROR);
  fail_unless (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_EOS);

  /* source shouldn't have sent any EOS event in pull mode */
  fail_unless (num_eos == 0);

  gst_element_set_state (pipe, GST_STATE_NULL);
  gst_element_get_state (pipe, NULL, NULL, -1);

  /* make sure source hasn't sent an EOS when going PAUSED => READY either */
  fail_unless (num_eos == 0);

  gst_pad_remove_event_probe (srcpad, probe);
  gst_object_unref (srcpad);
  gst_message_unref (msg);
  gst_object_unref (bus);
  gst_object_unref (pipe);
}

GST_END_TEST;


Suite *
gst_basesrc_suite (void)
{
  Suite *s = suite_create ("GstBaseSrc");
  TCase *tc = tcase_create ("general");

  suite_add_tcase (s, tc);
  tcase_add_test (tc, basesrc_eos_events_pull);
  tcase_add_test (tc, basesrc_eos_events_push);
  tcase_add_test (tc, basesrc_eos_events_push_live_op);
  tcase_add_test (tc, basesrc_eos_events_pull_live_op);

  return s;
}

GST_CHECK_MAIN (gst_basesrc);