C++ (Cpp) rb_player_gst_try_audio_sink Examples

Example #1

File: rb-player-gst.c Project: wangd/rhythmbox

static gboolean
construct_pipeline (RBPlayerGst *mp, GError **error)
{
	GstElement *sink;

	mp->priv->playbin = gst_element_factory_make ("playbin2", NULL);
	if (mp->priv->playbin == NULL) {
		g_set_error (error,
			     RB_PLAYER_ERROR,
			     RB_PLAYER_ERROR_GENERAL,
			     _("Failed to create playbin2 element; check your GStreamer installation"));
		return FALSE;
	}
	g_signal_connect_object (G_OBJECT (mp->priv->playbin),
				 "about-to-finish",
				 G_CALLBACK (about_to_finish_cb),
				 mp, 0);
	g_signal_connect_object (G_OBJECT (mp->priv->playbin),
				 "deep-notify::volume",
				 G_CALLBACK (volume_notify_cb),
				 mp, 0);
	g_signal_connect_object (G_OBJECT (mp->priv->playbin),
				 "notify::source",
				 G_CALLBACK (source_notify_cb),
				 mp, 0);

	gst_bus_add_watch (gst_element_get_bus (mp->priv->playbin),
			   (GstBusFunc) bus_cb,
			   mp);

	/* let plugins add bits to playbin */
	g_object_notify (G_OBJECT (mp), "playbin");
	g_object_notify (G_OBJECT (mp), "bus");

	/* Use gsettingsaudiosink for audio if there's no audio sink yet */
	g_object_get (mp->priv->playbin, "audio-sink", &mp->priv->audio_sink, NULL);
	if (mp->priv->audio_sink == NULL) {
		const char *try_sinks[] = { "gsettingsaudiosink", "gconfaudiosink", "autoaudiosink" };
		int i;

		for (i = 0; i < G_N_ELEMENTS (try_sinks); i++) {
			mp->priv->audio_sink = rb_player_gst_try_audio_sink (try_sinks[i], NULL);
			if (mp->priv->audio_sink != NULL) {
				g_object_set (mp->priv->playbin, "audio-sink", mp->priv->audio_sink, NULL);
				break;
			}
		}
	} else {
		rb_debug ("existing audio sink found");
		g_object_unref (mp->priv->audio_sink);
	}

	{
		GstPad *pad;
		GList *l;
		GstElement *queue;
		GstPad *ghostpad;

		/* setup filterbin */
		mp->priv->filterbin = rb_gst_create_filter_bin ();

		/* set up the sinkbin with its tee element */
		mp->priv->sinkbin = gst_bin_new (NULL);
		mp->priv->tee = gst_element_factory_make ("tee", NULL);
		queue = gst_element_factory_make ("queue", NULL);

		/* link it all together and insert */
		gst_bin_add_many (GST_BIN (mp->priv->sinkbin), mp->priv->filterbin, mp->priv->tee, queue, mp->priv->audio_sink, NULL);
		gst_element_link_many (mp->priv->filterbin, mp->priv->tee, queue, mp->priv->audio_sink, NULL);

		pad = gst_element_get_pad (mp->priv->filterbin, "sink");
		ghostpad = gst_ghost_pad_new ("sink", pad);
		gst_element_add_pad (mp->priv->sinkbin, ghostpad);
		gst_object_unref (pad);

		g_object_set (G_OBJECT (mp->priv->playbin), "audio-sink", mp->priv->sinkbin, NULL);

		/* add any tees and filters that were waiting for us */
		for (l = mp->priv->waiting_tees; l != NULL; l = g_list_next (l)) {
			rb_player_gst_tee_add_tee (RB_PLAYER_GST_TEE (mp), GST_ELEMENT (l->data));
		}
		g_list_free (mp->priv->waiting_tees);
		mp->priv->waiting_tees = NULL;

		for (l = mp->priv->waiting_filters; l != NULL; l = g_list_next (l)) {
			rb_player_gst_filter_add_filter (RB_PLAYER_GST_FILTER(mp), GST_ELEMENT (l->data));
		}
		g_list_free (mp->priv->waiting_filters);
		mp->priv->waiting_filters = NULL;
	}

	/* Use fakesink for video if there's no video sink yet */
	g_object_get (mp->priv->playbin, "video-sink", &sink, NULL);
	if (sink == NULL) {
		sink = gst_element_factory_make ("fakesink", NULL);
		g_object_set (mp->priv->playbin, "video-sink", sink, NULL);
	} else {
		g_object_unref (sink);
	}

	if (mp->priv->cur_volume > 1.0)
		mp->priv->cur_volume = 1.0;
	if (mp->priv->cur_volume < 0.0)
		mp->priv->cur_volume = 0;

	rb_debug ("pipeline construction complete");
	return TRUE;
}

Example #2

static gboolean
construct_pipeline (RBPlayerGst *mp, GError **error)
{
	GstElement *sink;
	GList *l;

	mp->priv->playbin = gst_element_factory_make ("playbin", NULL);
	if (mp->priv->playbin == NULL) {
		g_set_error (error,
			     RB_PLAYER_ERROR,
			     RB_PLAYER_ERROR_GENERAL,
			     _("Failed to create playbin element; check your GStreamer installation"));
		return FALSE;
	}
	g_signal_connect_object (G_OBJECT (mp->priv->playbin),
				 "about-to-finish",
				 G_CALLBACK (about_to_finish_cb),
				 mp, 0);
	g_signal_connect_object (G_OBJECT (mp->priv->playbin),
				 "deep-notify::volume",
				 G_CALLBACK (volume_notify_cb),
				 mp, 0);
	g_signal_connect_object (G_OBJECT (mp->priv->playbin),
				 "source-setup",
				 G_CALLBACK (source_setup_cb),
				 mp, 0);

	gst_bus_add_watch (gst_element_get_bus (mp->priv->playbin),
			   (GstBusFunc) bus_cb,
			   mp);

	/* let plugins add bits to playbin */
	g_object_notify (G_OBJECT (mp), "playbin");
	g_object_notify (G_OBJECT (mp), "bus");

	g_object_get (mp->priv->playbin, "audio-sink", &mp->priv->audio_sink, NULL);
	if (mp->priv->audio_sink == NULL) {
		mp->priv->audio_sink = rb_player_gst_try_audio_sink ("autoaudiosink", NULL);
		if (mp->priv->audio_sink == NULL) {
			g_set_error (error,
				     RB_PLAYER_ERROR,
				     RB_PLAYER_ERROR_GENERAL,
				     _("Failed to create %s element; check your GStreamer installation"),
				     "autoaudiosink");
			return FALSE;
		}
		g_object_set (mp->priv->playbin, "audio-sink", mp->priv->audio_sink, NULL);
	} else {
		rb_debug ("existing audio sink found");
		g_object_unref (mp->priv->audio_sink);
	}
	g_object_set (mp->priv->playbin, "audio-sink", mp->priv->audio_sink, NULL);

	/* setup filterbin */
	mp->priv->filterbin = rb_gst_create_filter_bin ();
	g_object_set (mp->priv->playbin, "audio-filter", mp->priv->filterbin, NULL);

	/* add any filters that have already been added */
	for (l = mp->priv->waiting_filters; l != NULL; l = g_list_next (l)) {
		rb_player_gst_filter_add_filter (RB_PLAYER_GST_FILTER(mp), GST_ELEMENT (l->data));
	}
	g_list_free (mp->priv->waiting_filters);
	mp->priv->waiting_filters = NULL;

	/* Use fakesink for video if there's no video sink yet */
	g_object_get (mp->priv->playbin, "video-sink", &sink, NULL);
	if (sink == NULL) {
		sink = gst_element_factory_make ("fakesink", NULL);
		g_object_set (mp->priv->playbin, "video-sink", sink, NULL);
	} else {
		g_object_unref (sink);
	}

	if (mp->priv->cur_volume > 1.0)
		mp->priv->cur_volume = 1.0;
	if (mp->priv->cur_volume < 0.0)
		mp->priv->cur_volume = 0;

	rb_debug ("pipeline construction complete");
	return TRUE;
}