2 * empathy-gst-gtk-widget.c - Source for EmpathyVideoWidget
3 * Copyright (C) 2008 Collabora Ltd.
4 * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <gst/interfaces/xoverlay.h>
27 #include <gst/farsight/fs-element-added-notifier.h>
29 #include "empathy-video-widget.h"
31 G_DEFINE_TYPE(EmpathyVideoWidget, empathy_video_widget,
32 GTK_TYPE_DRAWING_AREA)
34 static void empathy_video_widget_element_added_cb (
35 FsElementAddedNotifier *notifier, GstBin *bin, GstElement *element,
36 EmpathyVideoWidget *self);
38 static void empathy_video_widget_sync_message_cb (
39 GstBus *bus, GstMessage *message, EmpathyVideoWidget *self);
48 static guint signals[LAST_SIGNAL] = {0};
60 /* private structure */
61 typedef struct _EmpathyVideoWidgetPriv EmpathyVideoWidgetPriv;
63 struct _EmpathyVideoWidgetPriv
65 gboolean dispose_has_run;
67 GstElement *videosink;
70 FsElementAddedNotifier *notifier;
79 #define GET_PRIV(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
80 EMPATHY_TYPE_VIDEO_WIDGET, EmpathyVideoWidgetPriv))
83 empathy_video_widget_init (EmpathyVideoWidget *obj)
85 EmpathyVideoWidgetPriv *priv = GET_PRIV (obj);
88 priv->lock = g_mutex_new ();
90 priv->notifier = fs_element_added_notifier_new ();
91 g_signal_connect (priv->notifier, "element-added",
92 G_CALLBACK (empathy_video_widget_element_added_cb),
95 if (gdk_color_parse ("Black", &black))
96 gtk_widget_modify_bg (GTK_WIDGET (obj), GTK_STATE_NORMAL,
99 GTK_WIDGET_UNSET_FLAGS (GTK_WIDGET (obj), GTK_DOUBLE_BUFFERED);
103 empathy_video_widget_constructed (GObject *object)
105 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
106 GstElement *colorspace, *videoscale, *sink;
109 priv->videosink = gst_bin_new (NULL);
111 gst_object_ref (priv->videosink);
112 gst_object_sink (priv->videosink);
114 priv->sink_pad = gst_element_get_static_pad (priv->videosink, "sink");
116 sink = gst_element_factory_make ("gconfvideosink", NULL);
117 g_assert (sink != NULL);
119 videoscale = gst_element_factory_make ("videoscale", NULL);
120 g_assert (videoscale != NULL);
122 g_object_set (videoscale, "qos", FALSE, NULL);
124 colorspace = gst_element_factory_make ("ffmpegcolorspace", NULL);
125 g_assert (colorspace != NULL);
127 g_object_set (colorspace, "qos", FALSE, NULL);
129 gst_bin_add_many (GST_BIN (priv->videosink), colorspace, videoscale,
132 if (!gst_element_link (colorspace, videoscale))
133 g_error ("Failed to link ffmpegcolorspace and videoscale");
135 if (!gst_element_link (videoscale, sink))
136 g_error ("Failed to link videoscale and gconfvideosink");
138 pad = gst_element_get_static_pad (colorspace, "sink");
139 g_assert (pad != NULL);
141 priv->sink_pad = gst_ghost_pad_new ("sink", pad);
142 if (!gst_element_add_pad (priv->videosink, priv->sink_pad))
143 g_error ("Couldn't add sink ghostpad to the bin");
145 gst_object_unref (pad);
147 fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->videosink));
148 gst_bus_enable_sync_message_emission (priv->bus);
150 g_signal_connect (priv->bus, "sync-message",
151 G_CALLBACK (empathy_video_widget_sync_message_cb), object);
153 gtk_widget_set_size_request (GTK_WIDGET (object), priv->min_width,
157 static void empathy_video_widget_dispose (GObject *object);
158 static void empathy_video_widget_finalize (GObject *object);
160 static gboolean empathy_video_widget_expose_event (GtkWidget *widget,
161 GdkEventExpose *event);
163 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self);
166 empathy_video_widget_set_property (GObject *object,
167 guint property_id, const GValue *value, GParamSpec *pspec)
169 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
174 priv->bus = g_value_dup_object (value);
177 priv->min_width = g_value_get_int (value);
179 case PROP_MIN_HEIGHT:
180 priv->min_height = g_value_get_int (value);
183 priv->sync = g_value_get_boolean (value);
184 empathy_video_widget_element_set_sink_properties (
185 EMPATHY_VIDEO_WIDGET (object));
188 priv->async = g_value_get_boolean (value);
189 empathy_video_widget_element_set_sink_properties (
190 EMPATHY_VIDEO_WIDGET (object));
193 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
198 empathy_video_widget_get_property (GObject *object,
199 guint property_id, GValue *value, GParamSpec *pspec)
201 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
205 case PROP_GST_ELEMENT:
206 g_value_set_object (value, priv->videosink);
209 g_value_set_object (value, priv->bus);
212 g_value_set_int (value, priv->min_width);
214 case PROP_MIN_HEIGHT:
215 g_value_set_int (value, priv->min_height);
218 g_value_set_boolean (value, priv->sync);
221 g_value_set_boolean (value, priv->async);
224 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
230 empathy_video_widget_class_init (
231 EmpathyVideoWidgetClass *empathy_video_widget_class)
233 GObjectClass *object_class = G_OBJECT_CLASS (empathy_video_widget_class);
234 GtkWidgetClass *widget_class =
235 GTK_WIDGET_CLASS (empathy_video_widget_class);
236 GParamSpec *param_spec;
238 g_type_class_add_private (empathy_video_widget_class,
239 sizeof (EmpathyVideoWidgetPriv));
241 object_class->dispose = empathy_video_widget_dispose;
242 object_class->finalize = empathy_video_widget_finalize;
243 object_class->constructed = empathy_video_widget_constructed;
245 object_class->set_property = empathy_video_widget_set_property;
246 object_class->get_property = empathy_video_widget_get_property;
248 widget_class->expose_event = empathy_video_widget_expose_event;
250 param_spec = g_param_spec_object ("gst-element",
251 "gst-element", "The underlaying gstreamer element",
253 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
254 g_object_class_install_property (object_class, PROP_GST_ELEMENT, param_spec);
256 param_spec = g_param_spec_object ("gst-bus",
258 "The toplevel bus from the pipeline in which this bin will be added",
260 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
261 g_object_class_install_property (object_class, PROP_GST_BUS, param_spec);
263 param_spec = g_param_spec_int ("min-width",
265 "Minimal width of the widget",
266 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_WIDTH,
267 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
268 g_object_class_install_property (object_class, PROP_MIN_WIDTH, param_spec);
270 param_spec = g_param_spec_int ("min-height",
272 "Minimal height of the widget",
273 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_HEIGHT,
274 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
275 g_object_class_install_property (object_class, PROP_MIN_HEIGHT, param_spec);
277 param_spec = g_param_spec_boolean ("sync",
279 "Whether the underlying sink should be sync or not",
281 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
282 g_object_class_install_property (object_class, PROP_SYNC, param_spec);
284 param_spec = g_param_spec_boolean ("async",
286 "Whether the underlying sink should be async or not",
288 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
289 g_object_class_install_property (object_class, PROP_ASYNC, param_spec);
293 empathy_video_widget_dispose (GObject *object)
295 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
296 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
298 if (priv->dispose_has_run)
301 priv->dispose_has_run = TRUE;
303 g_signal_handlers_disconnect_by_func (priv->bus,
304 empathy_video_widget_sync_message_cb, object);
306 if (priv->bus != NULL)
307 g_object_unref (priv->bus);
311 if (priv->videosink != NULL)
312 g_object_unref (priv->videosink);
314 priv->videosink = NULL;
317 /* release any references held by the object here */
319 if (G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose)
320 G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose (object);
324 empathy_video_widget_finalize (GObject *object)
326 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
327 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
329 /* free any data held directly by the object here */
330 g_mutex_free (priv->lock);
332 G_OBJECT_CLASS (empathy_video_widget_parent_class)->finalize (object);
337 empathy_video_widget_element_set_sink_properties_unlocked (
338 EmpathyVideoWidget *self)
340 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
342 if (priv->overlay == NULL)
345 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
346 "force-aspect-ratio"))
347 g_object_set (G_OBJECT (priv->overlay), "force-aspect-ratio", TRUE, NULL);
349 if (g_object_class_find_property (
350 G_OBJECT_GET_CLASS (priv->overlay), "sync"))
351 g_object_set (G_OBJECT (priv->overlay), "sync", priv->sync, NULL);
353 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
355 g_object_set (G_OBJECT (priv->overlay), "async", priv->async, NULL);
359 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self)
361 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
363 g_mutex_lock (priv->lock);
364 empathy_video_widget_element_set_sink_properties_unlocked (self);
365 g_mutex_unlock (priv->lock);
369 empathy_video_widget_element_added_cb (FsElementAddedNotifier *notifier,
370 GstBin *bin, GstElement *element, EmpathyVideoWidget *self)
372 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
374 /* We assume the overlay is the sink */
375 g_mutex_lock (priv->lock);
376 if (priv->overlay == NULL && GST_IS_X_OVERLAY (element))
378 priv->overlay = element;
379 g_object_add_weak_pointer (G_OBJECT (element),
380 (gpointer) &priv->overlay);
381 empathy_video_widget_element_set_sink_properties_unlocked (self);
382 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
384 g_mutex_unlock (priv->lock);
388 empathy_video_widget_sync_message_cb (GstBus *bus, GstMessage *message,
389 EmpathyVideoWidget *self)
391 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
392 const GstStructure *s;
394 if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
397 if (GST_MESSAGE_SRC (message) != (GstObject *) priv->overlay)
400 s = gst_message_get_structure (message);
402 if (gst_structure_has_name (s, "prepare-xwindow-id"))
404 g_assert (GTK_WIDGET_REALIZED (GTK_WIDGET (self)));
405 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
406 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (self))));
411 empathy_video_widget_expose_event (GtkWidget *widget, GdkEventExpose *event)
413 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (widget);
414 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
416 if (event != NULL && event->count > 0)
419 if (priv->overlay == NULL)
421 gdk_window_clear_area (gtk_widget_get_window (widget), 0, 0,
422 widget->allocation.width, widget->allocation.height);
426 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
427 GDK_WINDOW_XID (gtk_widget_get_window (widget)));
429 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
435 empathy_video_widget_new_with_size (GstBus *bus, gint width, gint height)
437 g_return_val_if_fail (bus != NULL, NULL);
439 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
442 "min-height", height,
447 empathy_video_widget_new (GstBus *bus)
449 g_return_val_if_fail (bus != NULL, NULL);
451 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
457 empathy_video_widget_get_sink (EmpathyVideoWidget *widget)
459 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
461 return priv->sink_pad;
465 empathy_video_widget_get_element (EmpathyVideoWidget *widget)
467 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
469 return priv->videosink;