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_rgba_parse (&black, "Black"))
96 gtk_widget_override_background_color (GTK_WIDGET (obj), 0, &black);
98 gtk_widget_set_double_buffered (GTK_WIDGET (obj), FALSE);
102 empathy_video_widget_realized (GtkWidget *widget, gpointer user_data)
104 /* requesting the XID forces the GdkWindow to be native in GTK+ 2.18
105 * onwards, requesting the native window in a thread causes a BadWindowID,
106 * so we need to request it now. We could call gdk_window_ensure_native(),
107 * but that would mean we require GTK+ 2.18, so instead we call this */
108 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (widget)));
112 empathy_video_widget_constructed (GObject *object)
114 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
115 GstElement *colorspace, *videoscale, *sink;
118 g_signal_connect (object, "realize",
119 G_CALLBACK (empathy_video_widget_realized), NULL);
121 priv->videosink = gst_bin_new (NULL);
123 gst_object_ref (priv->videosink);
124 gst_object_sink (priv->videosink);
126 priv->sink_pad = gst_element_get_static_pad (priv->videosink, "sink");
128 sink = gst_element_factory_make ("gconfvideosink", NULL);
129 g_assert (sink != NULL);
131 videoscale = gst_element_factory_make ("videoscale", NULL);
132 g_assert (videoscale != NULL);
134 g_object_set (videoscale, "qos", FALSE, NULL);
136 colorspace = gst_element_factory_make ("ffmpegcolorspace", NULL);
137 g_assert (colorspace != NULL);
139 g_object_set (colorspace, "qos", FALSE, NULL);
141 gst_bin_add_many (GST_BIN (priv->videosink), colorspace, videoscale,
144 if (!gst_element_link (colorspace, videoscale))
145 g_error ("Failed to link ffmpegcolorspace and videoscale");
147 if (!gst_element_link (videoscale, sink))
148 g_error ("Failed to link videoscale and gconfvideosink");
150 pad = gst_element_get_static_pad (colorspace, "sink");
151 g_assert (pad != NULL);
153 priv->sink_pad = gst_ghost_pad_new ("sink", pad);
154 if (!gst_element_add_pad (priv->videosink, priv->sink_pad))
155 g_error ("Couldn't add sink ghostpad to the bin");
157 gst_object_unref (pad);
159 fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->videosink));
160 gst_bus_enable_sync_message_emission (priv->bus);
162 g_signal_connect (priv->bus, "sync-message",
163 G_CALLBACK (empathy_video_widget_sync_message_cb), object);
165 gtk_widget_set_size_request (GTK_WIDGET (object), priv->min_width,
169 static void empathy_video_widget_dispose (GObject *object);
170 static void empathy_video_widget_finalize (GObject *object);
173 static gboolean empathy_video_widget_draw (GtkWidget *widget,
177 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self);
180 empathy_video_widget_set_property (GObject *object,
181 guint property_id, const GValue *value, GParamSpec *pspec)
183 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
188 priv->bus = g_value_dup_object (value);
191 priv->min_width = g_value_get_int (value);
193 case PROP_MIN_HEIGHT:
194 priv->min_height = g_value_get_int (value);
197 priv->sync = g_value_get_boolean (value);
198 empathy_video_widget_element_set_sink_properties (
199 EMPATHY_VIDEO_WIDGET (object));
202 priv->async = g_value_get_boolean (value);
203 empathy_video_widget_element_set_sink_properties (
204 EMPATHY_VIDEO_WIDGET (object));
207 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
212 empathy_video_widget_get_property (GObject *object,
213 guint property_id, GValue *value, GParamSpec *pspec)
215 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
219 case PROP_GST_ELEMENT:
220 g_value_set_object (value, priv->videosink);
223 g_value_set_object (value, priv->bus);
226 g_value_set_int (value, priv->min_width);
228 case PROP_MIN_HEIGHT:
229 g_value_set_int (value, priv->min_height);
232 g_value_set_boolean (value, priv->sync);
235 g_value_set_boolean (value, priv->async);
238 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
244 empathy_video_widget_class_init (
245 EmpathyVideoWidgetClass *empathy_video_widget_class)
247 GObjectClass *object_class = G_OBJECT_CLASS (empathy_video_widget_class);
248 GtkWidgetClass *widget_class =
249 GTK_WIDGET_CLASS (empathy_video_widget_class);
250 GParamSpec *param_spec;
252 g_type_class_add_private (empathy_video_widget_class,
253 sizeof (EmpathyVideoWidgetPriv));
255 object_class->dispose = empathy_video_widget_dispose;
256 object_class->finalize = empathy_video_widget_finalize;
257 object_class->constructed = empathy_video_widget_constructed;
259 object_class->set_property = empathy_video_widget_set_property;
260 object_class->get_property = empathy_video_widget_get_property;
262 widget_class->draw = empathy_video_widget_draw;
264 param_spec = g_param_spec_object ("gst-element",
265 "gst-element", "The underlaying gstreamer element",
267 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
268 g_object_class_install_property (object_class, PROP_GST_ELEMENT, param_spec);
270 param_spec = g_param_spec_object ("gst-bus",
272 "The toplevel bus from the pipeline in which this bin will be added",
274 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
275 g_object_class_install_property (object_class, PROP_GST_BUS, param_spec);
277 param_spec = g_param_spec_int ("min-width",
279 "Minimal width of the widget",
280 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_WIDTH,
281 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
282 g_object_class_install_property (object_class, PROP_MIN_WIDTH, param_spec);
284 param_spec = g_param_spec_int ("min-height",
286 "Minimal height of the widget",
287 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_HEIGHT,
288 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
289 g_object_class_install_property (object_class, PROP_MIN_HEIGHT, param_spec);
291 param_spec = g_param_spec_boolean ("sync",
293 "Whether the underlying sink should be sync or not",
295 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
296 g_object_class_install_property (object_class, PROP_SYNC, param_spec);
298 param_spec = g_param_spec_boolean ("async",
300 "Whether the underlying sink should be async or not",
302 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
303 g_object_class_install_property (object_class, PROP_ASYNC, param_spec);
307 empathy_video_widget_dispose (GObject *object)
309 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
310 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
312 if (priv->dispose_has_run)
315 priv->dispose_has_run = TRUE;
317 g_signal_handlers_disconnect_by_func (priv->bus,
318 empathy_video_widget_sync_message_cb, object);
320 if (priv->bus != NULL)
321 g_object_unref (priv->bus);
325 if (priv->videosink != NULL)
326 g_object_unref (priv->videosink);
328 priv->videosink = NULL;
331 /* release any references held by the object here */
333 if (G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose)
334 G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose (object);
338 empathy_video_widget_finalize (GObject *object)
340 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
341 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
343 /* free any data held directly by the object here */
344 g_mutex_free (priv->lock);
346 G_OBJECT_CLASS (empathy_video_widget_parent_class)->finalize (object);
351 empathy_video_widget_element_set_sink_properties_unlocked (
352 EmpathyVideoWidget *self)
354 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
356 if (priv->overlay == NULL)
359 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
360 "force-aspect-ratio"))
361 g_object_set (G_OBJECT (priv->overlay), "force-aspect-ratio", TRUE, NULL);
363 if (g_object_class_find_property (
364 G_OBJECT_GET_CLASS (priv->overlay), "sync"))
365 g_object_set (G_OBJECT (priv->overlay), "sync", priv->sync, NULL);
367 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
369 g_object_set (G_OBJECT (priv->overlay), "async", priv->async, NULL);
373 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self)
375 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
377 g_mutex_lock (priv->lock);
378 empathy_video_widget_element_set_sink_properties_unlocked (self);
379 g_mutex_unlock (priv->lock);
383 empathy_video_widget_element_added_cb (FsElementAddedNotifier *notifier,
384 GstBin *bin, GstElement *element, EmpathyVideoWidget *self)
386 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
388 /* We assume the overlay is the sink */
389 g_mutex_lock (priv->lock);
390 if (priv->overlay == NULL && GST_IS_X_OVERLAY (element))
392 priv->overlay = element;
393 g_object_add_weak_pointer (G_OBJECT (element),
394 (gpointer) &priv->overlay);
395 empathy_video_widget_element_set_sink_properties_unlocked (self);
396 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
398 g_mutex_unlock (priv->lock);
402 empathy_video_widget_sync_message_cb (GstBus *bus, GstMessage *message,
403 EmpathyVideoWidget *self)
405 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
406 const GstStructure *s;
408 if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
411 if (GST_MESSAGE_SRC (message) != (GstObject *) priv->overlay)
414 s = gst_message_get_structure (message);
416 if (gst_structure_has_name (s, "prepare-xwindow-id"))
418 g_assert (gtk_widget_get_realized (GTK_WIDGET (self)));
419 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
420 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (self))));
425 empathy_video_widget_draw (GtkWidget *widget,
428 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (widget);
429 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
430 GtkAllocation allocation;
432 if (priv->overlay == NULL)
434 gtk_widget_get_allocation (widget, &allocation);
436 gtk_render_frame (gtk_widget_get_style_context (widget), cr,
438 gtk_widget_get_allocated_width (widget),
439 gtk_widget_get_allocated_height (widget));
443 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
444 GDK_WINDOW_XID (gtk_widget_get_window (widget)));
446 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
452 empathy_video_widget_new_with_size (GstBus *bus, gint width, gint height)
454 g_return_val_if_fail (bus != NULL, NULL);
456 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
459 "min-height", height,
464 empathy_video_widget_new (GstBus *bus)
466 g_return_val_if_fail (bus != NULL, NULL);
468 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
474 empathy_video_widget_get_sink (EmpathyVideoWidget *widget)
476 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
478 return priv->sink_pad;
482 empathy_video_widget_get_element (EmpathyVideoWidget *widget)
484 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
486 return priv->videosink;