gstghostpad.c

gnash 在pc和嵌入式下开发需要的源码

  ASSERT_OBJECT_REFCOUNT (fsrc, "fsrc", 3);     /* parent and gisrc */
  ASSERT_OBJECT_REFCOUNT (gsink, "gsink", 2);   /* parent */
  ASSERT_OBJECT_REFCOUNT (gsrc, "gsrc", 2);     /* parent */
  ASSERT_OBJECT_REFCOUNT (fsink, "fsink", 3);   /* parent and gisink */

  ASSERT_OBJECT_REFCOUNT (gisrc, "gisrc", 2);   /* parent */
  ASSERT_OBJECT_REFCOUNT (isink, "isink", 3);   /* parent and gsink */
  ASSERT_OBJECT_REFCOUNT (gisink, "gisink", 2); /* parent */
  ASSERT_OBJECT_REFCOUNT (isrc, "isrc", 3);     /* parent and gsrc */

  ret = gst_element_set_state (b1, GST_STATE_PLAYING);
  ret = gst_element_get_state (b1, NULL, NULL, GST_CLOCK_TIME_NONE);
  fail_unless (ret == GST_STATE_CHANGE_SUCCESS);

  ret = gst_element_set_state (b1, GST_STATE_NULL);
  ret = gst_element_get_state (b1, NULL, NULL, GST_CLOCK_TIME_NONE);
  fail_unless (ret == GST_STATE_CHANGE_SUCCESS);

  gst_object_unref (b1);
  /* unreffing the bin will unref all elements, which will unlink and unparent
   * all pads */

  /* wait for thread to settle down */
  while (GST_OBJECT_REFCOUNT_VALUE (fsrc) > 2)
    THREAD_SWITCH ();

  ASSERT_OBJECT_REFCOUNT (fsrc, "fsrc", 1);
  ASSERT_OBJECT_REFCOUNT (gsink, "gsink", 1);
  ASSERT_OBJECT_REFCOUNT (gsrc, "gsink", 1);
  ASSERT_OBJECT_REFCOUNT (fsink, "fsink", 1);

  ASSERT_OBJECT_REFCOUNT (gisrc, "gisrc", 2);   /* gsink */
  ASSERT_OBJECT_REFCOUNT (isink, "isink", 2);   /* gsink */
  ASSERT_OBJECT_REFCOUNT (gisink, "gisink", 2); /* gsrc */
  ASSERT_OBJECT_REFCOUNT (isrc, "isrc", 2);     /* gsrc */

  gst_object_unref (gsink);
  ASSERT_OBJECT_REFCOUNT (isink, "isink", 1);
  ASSERT_OBJECT_REFCOUNT (gisrc, "gisrc", 1);
  ASSERT_OBJECT_REFCOUNT (fsrc, "fsrc", 1);
  gst_object_unref (gisrc);
  ASSERT_OBJECT_REFCOUNT (fsrc, "fsrc", 1);

  gst_object_unref (gsrc);
  ASSERT_OBJECT_REFCOUNT (isrc, "isrc", 1);
  ASSERT_OBJECT_REFCOUNT (gisink, "gisink", 1);
  ASSERT_OBJECT_REFCOUNT (fsink, "fsink", 1);
  gst_object_unref (gisink);
  ASSERT_OBJECT_REFCOUNT (fsink, "fsink", 1);

  gst_object_unref (fsrc);
  gst_object_unref (isrc);
  gst_object_unref (isink);
  gst_object_unref (fsink);
}

GST_END_TEST;

GST_START_TEST (test_ghost_pads_bin)
{
  GstBin *pipeline;
  GstBin *srcbin;
  GstBin *sinkbin;
  GstElement *src;
  GstElement *sink;
  GstPad *srcpad, *srcghost, *target;
  GstPad *sinkpad, *sinkghost;

  pipeline = GST_BIN (gst_pipeline_new ("pipe"));
  ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 1);

  srcbin = GST_BIN (gst_bin_new ("srcbin"));
  gst_bin_add (pipeline, GST_ELEMENT (srcbin));
  ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 1);

  sinkbin = GST_BIN (gst_bin_new ("sinkbin"));
  gst_bin_add (pipeline, GST_ELEMENT (sinkbin));
  ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 1);

  src = gst_element_factory_make ("fakesrc", "src");
  gst_bin_add (srcbin, src);
  srcpad = gst_element_get_pad (src, "src");
  srcghost = gst_ghost_pad_new ("src", srcpad);
  gst_object_unref (srcpad);
  gst_element_add_pad (GST_ELEMENT (srcbin), srcghost);

  sink = gst_element_factory_make ("fakesink", "sink");
  gst_bin_add (sinkbin, sink);
  sinkpad = gst_element_get_pad (sink, "sink");
  sinkghost = gst_ghost_pad_new ("sink", sinkpad);
  gst_object_unref (sinkpad);
  gst_element_add_pad (GST_ELEMENT (sinkbin), sinkghost);

  gst_element_link (GST_ELEMENT (srcbin), GST_ELEMENT (sinkbin));

  fail_unless (GST_PAD_PEER (srcghost) != NULL);
  fail_unless (GST_PAD_PEER (sinkghost) != NULL);
  target = gst_ghost_pad_get_target (GST_GHOST_PAD (srcghost));
  fail_unless (GST_PAD_PEER (target) != NULL);
  gst_object_unref (target);
  target = gst_ghost_pad_get_target (GST_GHOST_PAD (sinkghost));
  fail_unless (GST_PAD_PEER (target) != NULL);
  gst_object_unref (target);

  ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 1);

  gst_object_unref (pipeline);
}

GST_END_TEST;

typedef struct
{
  GMutex *mutex;
  GCond *cond;
} BlockData;

static void
block_callback (GstPad * pad, gboolean blocked, gpointer user_data)
{
  BlockData *block_data = (BlockData *) user_data;

  g_mutex_lock (block_data->mutex);
  GST_DEBUG ("blocked\n");
  g_cond_signal (block_data->cond);
  g_mutex_unlock (block_data->mutex);
}

GST_START_TEST (test_ghost_pads_block)
{
  GstBin *pipeline;
  GstBin *srcbin;
  GstElement *src;
  GstPad *srcpad;
  GstPad *srcghost;
  BlockData block_data;

  pipeline = GST_BIN (gst_pipeline_new ("pipeline"));

  srcbin = GST_BIN (gst_bin_new ("srcbin"));
  gst_bin_add (pipeline, GST_ELEMENT (srcbin));

  src = gst_element_factory_make ("fakesrc", "src");
  gst_bin_add (srcbin, src);
  srcpad = gst_element_get_pad (src, "src");
  srcghost = gst_ghost_pad_new ("src", srcpad);
  gst_element_add_pad (GST_ELEMENT (srcbin), srcghost);
  gst_object_unref (srcpad);

  block_data.mutex = g_mutex_new ();
  block_data.cond = g_cond_new ();

  g_mutex_lock (block_data.mutex);
  gst_pad_set_blocked_async (srcghost, TRUE, block_callback, &block_data);
  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
  /* and wait now */
  g_cond_wait (block_data.cond, block_data.mutex);
  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
  g_mutex_unlock (block_data.mutex);

  g_mutex_free (block_data.mutex);
  g_cond_free (block_data.cond);

  ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 1);
  gst_object_unref (pipeline);
}

GST_END_TEST;

GST_START_TEST (test_ghost_pads_probes)
{
  GstBin *pipeline;
  GstBin *srcbin;
  GstElement *src;
  GstPad *srcpad;
  GstPad *srcghost;
  BlockData block_data;

  pipeline = GST_BIN (gst_pipeline_new ("pipeline"));

  srcbin = GST_BIN (gst_bin_new ("srcbin"));
  gst_bin_add (pipeline, GST_ELEMENT (srcbin));

  src = gst_element_factory_make ("fakesrc", "src");
  gst_bin_add (srcbin, src);
  srcpad = gst_element_get_pad (src, "src");
  srcghost = gst_ghost_pad_new ("src", srcpad);
  gst_element_add_pad (GST_ELEMENT (srcbin), srcghost);
  gst_object_unref (srcpad);

  block_data.mutex = g_mutex_new ();
  block_data.cond = g_cond_new ();

  g_mutex_lock (block_data.mutex);
  gst_pad_set_blocked_async (srcghost, TRUE, block_callback, &block_data);
  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
  /* and wait now */
  g_cond_wait (block_data.cond, block_data.mutex);
  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
  g_mutex_unlock (block_data.mutex);

  g_mutex_free (block_data.mutex);
  g_cond_free (block_data.cond);

  ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 1);
  gst_object_unref (pipeline);
}

GST_END_TEST;

GST_START_TEST (test_ghost_pads_new_from_template)
{
  GstPad *sinkpad, *ghostpad;
  GstPadTemplate *padtempl, *ghosttempl;
  GstCaps *padcaps, *ghostcaps, *newcaps;

  padcaps = gst_caps_from_string ("some/caps");
  fail_unless (padcaps != NULL);
  ghostcaps = gst_caps_from_string ("some/caps;some/other-caps");
  fail_unless (ghostcaps != NULL);

  padtempl = gst_pad_template_new ("padtempl", GST_PAD_SINK,
      GST_PAD_ALWAYS, padcaps);
  fail_unless (padtempl != NULL);
  ghosttempl = gst_pad_template_new ("ghosttempl", GST_PAD_SINK,
      GST_PAD_ALWAYS, ghostcaps);

  sinkpad = gst_pad_new_from_template (padtempl, "sinkpad");
  fail_unless (sinkpad != NULL);

  ghostpad = gst_ghost_pad_new_from_template ("ghostpad", sinkpad, ghosttempl);
  fail_unless (ghostpad != NULL);

  /* check template is properly set */
  fail_unless (GST_PAD_PAD_TEMPLATE (ghostpad) == ghosttempl);

  /* check ghostpad caps are from the sinkpad */
  newcaps = gst_pad_get_caps (ghostpad);
  fail_unless (newcaps != NULL);
  fail_unless (gst_caps_is_equal (newcaps, padcaps));
  gst_caps_unref (newcaps);
  gst_caps_unref (padcaps);
}

GST_END_TEST;

GST_START_TEST (test_ghost_pads_new_no_target_from_template)
{
  GstPad *sinkpad, *ghostpad;
  GstPadTemplate *padtempl, *ghosttempl;
  GstCaps *padcaps, *ghostcaps, *newcaps;

  padcaps = gst_caps_from_string ("some/caps");
  fail_unless (padcaps != NULL);
  ghostcaps = gst_caps_from_string ("some/caps;some/other-caps");
  fail_unless (ghostcaps != NULL);

  padtempl = gst_pad_template_new ("padtempl", GST_PAD_SINK,
      GST_PAD_ALWAYS, padcaps);
  fail_unless (padtempl != NULL);
  ghosttempl = gst_pad_template_new ("ghosttempl", GST_PAD_SINK,
      GST_PAD_ALWAYS, ghostcaps);

  sinkpad = gst_pad_new_from_template (padtempl, "sinkpad");
  fail_unless (sinkpad != NULL);

  ghostpad = gst_ghost_pad_new_no_target_from_template ("ghostpad", ghosttempl);
  fail_unless (ghostpad != NULL);

  /* check template is properly set */
  fail_unless (GST_PAD_PAD_TEMPLATE (ghostpad) == ghosttempl);

  /* check ghostpad caps are from the ghostpad template */
  newcaps = gst_pad_get_caps (ghostpad);
  fail_unless (newcaps != NULL);
  fail_unless (gst_caps_is_equal (newcaps, ghostcaps));
  gst_caps_unref (newcaps);

  fail_unless (gst_ghost_pad_set_target ((GstGhostPad *) ghostpad, sinkpad));

  /* check ghostpad caps are now from the target pad */
  newcaps = gst_pad_get_caps (ghostpad);
  fail_unless (newcaps != NULL);
  fail_unless (gst_caps_is_equal (newcaps, padcaps));
  gst_caps_unref (newcaps);

}

GST_END_TEST;

Suite *
gst_ghost_pad_suite (void)
{
  Suite *s = suite_create ("GstGhostPad");
  TCase *tc_chain = tcase_create ("ghost pad tests");

  suite_add_tcase (s, tc_chain);
  tcase_add_test (tc_chain, test_remove1);
  tcase_add_test (tc_chain, test_remove2);
  tcase_add_test (tc_chain, test_link);
  tcase_add_test (tc_chain, test_ghost_pads);
  tcase_add_test (tc_chain, test_ghost_pads_bin);
  tcase_add_test (tc_chain, test_ghost_pads_notarget);
  tcase_add_test (tc_chain, test_ghost_pads_block);
  tcase_add_test (tc_chain, test_ghost_pads_probes);
  tcase_add_test (tc_chain, test_ghost_pads_new_from_template);
  tcase_add_test (tc_chain, test_ghost_pads_new_no_target_from_template);

  return s;
}

GST_CHECK_MAIN (gst_ghost_pad);