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};
61 /* private structure */
62 typedef struct _EmpathyVideoWidgetPriv EmpathyVideoWidgetPriv;
64 struct _EmpathyVideoWidgetPriv
66 gboolean dispose_has_run;
68 GstElement *videosink;
72 FsElementAddedNotifier *notifier;
82 #define GET_PRIV(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
83 EMPATHY_TYPE_VIDEO_WIDGET, EmpathyVideoWidgetPriv))
86 empathy_video_widget_init (EmpathyVideoWidget *obj)
88 EmpathyVideoWidgetPriv *priv = GET_PRIV (obj);
91 priv->lock = g_mutex_new ();
93 priv->notifier = fs_element_added_notifier_new ();
94 g_signal_connect (priv->notifier, "element-added",
95 G_CALLBACK (empathy_video_widget_element_added_cb),
98 if (gdk_rgba_parse (&black, "Black"))
99 gtk_widget_override_background_color (GTK_WIDGET (obj), 0, &black);
101 gtk_widget_set_double_buffered (GTK_WIDGET (obj), FALSE);
105 empathy_video_widget_realized (GtkWidget *widget, gpointer user_data)
107 /* requesting the XID forces the GdkWindow to be native in GTK+ 2.18
108 * onwards, requesting the native window in a thread causes a BadWindowID,
109 * so we need to request it now. We could call gdk_window_ensure_native(),
110 * but that would mean we require GTK+ 2.18, so instead we call this */
111 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (widget)));
115 empathy_video_widget_constructed (GObject *object)
117 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
118 GstElement *colorspace, *videoscale, *sink;
121 g_signal_connect (object, "realize",
122 G_CALLBACK (empathy_video_widget_realized), NULL);
124 priv->videosink = gst_bin_new (NULL);
126 gst_object_ref (priv->videosink);
127 gst_object_sink (priv->videosink);
129 priv->sink_pad = gst_element_get_static_pad (priv->videosink, "sink");
131 sink = gst_element_factory_make ("gconfvideosink", NULL);
132 g_assert (sink != NULL);
134 videoscale = gst_element_factory_make ("videoscale", NULL);
135 g_assert (videoscale != NULL);
137 g_object_set (videoscale, "qos", FALSE, NULL);
139 colorspace = gst_element_factory_make ("ffmpegcolorspace", NULL);
140 g_assert (colorspace != NULL);
142 g_object_set (colorspace, "qos", FALSE, NULL);
144 priv->flip = gst_element_factory_make ("videoflip", NULL);
145 g_assert (priv->flip != NULL);
147 gst_bin_add_many (GST_BIN (priv->videosink), colorspace, videoscale,
148 priv->flip, sink, NULL);
150 if (!gst_element_link (colorspace, videoscale))
151 g_error ("Failed to link ffmpegcolorspace and videoscale");
153 if (!gst_element_link (videoscale, priv->flip))
154 g_error ("Failed to link videoscale and videoflip");
156 if (!gst_element_link (priv->flip, sink))
157 g_error ("Failed to link videoflip and gconfvideosink");
159 pad = gst_element_get_static_pad (colorspace, "sink");
160 g_assert (pad != NULL);
162 priv->sink_pad = gst_ghost_pad_new ("sink", pad);
163 if (!gst_element_add_pad (priv->videosink, priv->sink_pad))
164 g_error ("Couldn't add sink ghostpad to the bin");
166 gst_object_unref (pad);
168 fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->videosink));
169 gst_bus_enable_sync_message_emission (priv->bus);
171 g_signal_connect (priv->bus, "sync-message",
172 G_CALLBACK (empathy_video_widget_sync_message_cb), object);
174 gtk_widget_set_size_request (GTK_WIDGET (object), priv->min_width,
178 static void empathy_video_widget_dispose (GObject *object);
179 static void empathy_video_widget_finalize (GObject *object);
182 static gboolean empathy_video_widget_draw (GtkWidget *widget,
186 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self);
189 empathy_video_widget_set_property (GObject *object,
190 guint property_id, const GValue *value, GParamSpec *pspec)
192 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
197 priv->bus = g_value_dup_object (value);
200 priv->min_width = g_value_get_int (value);
202 case PROP_MIN_HEIGHT:
203 priv->min_height = g_value_get_int (value);
206 priv->sync = g_value_get_boolean (value);
207 empathy_video_widget_element_set_sink_properties (
208 EMPATHY_VIDEO_WIDGET (object));
211 priv->async = g_value_get_boolean (value);
212 empathy_video_widget_element_set_sink_properties (
213 EMPATHY_VIDEO_WIDGET (object));
215 case PROP_FLIP_VIDEO:
216 priv->flip_video = g_value_get_boolean (value);
217 gst_util_set_object_arg (G_OBJECT (priv->flip), "method",
218 priv->flip_video ? "horizontal-flip" : "none");
221 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
226 empathy_video_widget_get_property (GObject *object,
227 guint property_id, GValue *value, GParamSpec *pspec)
229 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
233 case PROP_GST_ELEMENT:
234 g_value_set_object (value, priv->videosink);
237 g_value_set_object (value, priv->bus);
240 g_value_set_int (value, priv->min_width);
242 case PROP_MIN_HEIGHT:
243 g_value_set_int (value, priv->min_height);
246 g_value_set_boolean (value, priv->sync);
249 g_value_set_boolean (value, priv->async);
251 case PROP_FLIP_VIDEO:
252 g_value_set_boolean (value, priv->flip_video);
255 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
261 empathy_video_widget_class_init (
262 EmpathyVideoWidgetClass *empathy_video_widget_class)
264 GObjectClass *object_class = G_OBJECT_CLASS (empathy_video_widget_class);
265 GtkWidgetClass *widget_class =
266 GTK_WIDGET_CLASS (empathy_video_widget_class);
267 GParamSpec *param_spec;
269 g_type_class_add_private (empathy_video_widget_class,
270 sizeof (EmpathyVideoWidgetPriv));
272 object_class->dispose = empathy_video_widget_dispose;
273 object_class->finalize = empathy_video_widget_finalize;
274 object_class->constructed = empathy_video_widget_constructed;
276 object_class->set_property = empathy_video_widget_set_property;
277 object_class->get_property = empathy_video_widget_get_property;
279 widget_class->draw = empathy_video_widget_draw;
281 param_spec = g_param_spec_object ("gst-element",
282 "gst-element", "The underlaying gstreamer element",
284 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
285 g_object_class_install_property (object_class, PROP_GST_ELEMENT, param_spec);
287 param_spec = g_param_spec_object ("gst-bus",
289 "The toplevel bus from the pipeline in which this bin will be added",
291 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
292 g_object_class_install_property (object_class, PROP_GST_BUS, param_spec);
294 param_spec = g_param_spec_int ("min-width",
296 "Minimal width of the widget",
297 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_WIDTH,
298 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
299 g_object_class_install_property (object_class, PROP_MIN_WIDTH, param_spec);
301 param_spec = g_param_spec_int ("min-height",
303 "Minimal height of the widget",
304 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_HEIGHT,
305 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
306 g_object_class_install_property (object_class, PROP_MIN_HEIGHT, param_spec);
308 param_spec = g_param_spec_boolean ("sync",
310 "Whether the underlying sink should be sync or not",
312 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
313 g_object_class_install_property (object_class, PROP_SYNC, param_spec);
315 param_spec = g_param_spec_boolean ("async",
317 "Whether the underlying sink should be async or not",
319 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
320 g_object_class_install_property (object_class, PROP_ASYNC, param_spec);
322 param_spec = g_param_spec_boolean ("flip-video",
324 "Whether the video should be flipped horizontally or not",
326 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
327 g_object_class_install_property (object_class, PROP_FLIP_VIDEO, param_spec);
331 empathy_video_widget_dispose (GObject *object)
333 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
334 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
336 if (priv->dispose_has_run)
339 priv->dispose_has_run = TRUE;
341 g_signal_handlers_disconnect_by_func (priv->bus,
342 empathy_video_widget_sync_message_cb, object);
344 if (priv->bus != NULL)
345 g_object_unref (priv->bus);
349 if (priv->videosink != NULL)
350 g_object_unref (priv->videosink);
352 priv->videosink = NULL;
355 /* release any references held by the object here */
357 if (G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose)
358 G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose (object);
362 empathy_video_widget_finalize (GObject *object)
364 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
365 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
367 /* free any data held directly by the object here */
368 g_mutex_free (priv->lock);
370 G_OBJECT_CLASS (empathy_video_widget_parent_class)->finalize (object);
375 empathy_video_widget_element_set_sink_properties_unlocked (
376 EmpathyVideoWidget *self)
378 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
380 if (priv->overlay == NULL)
383 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
384 "force-aspect-ratio"))
385 g_object_set (G_OBJECT (priv->overlay), "force-aspect-ratio", TRUE, NULL);
387 if (g_object_class_find_property (
388 G_OBJECT_GET_CLASS (priv->overlay), "sync"))
389 g_object_set (G_OBJECT (priv->overlay), "sync", priv->sync, NULL);
391 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
393 g_object_set (G_OBJECT (priv->overlay), "async", priv->async, NULL);
397 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self)
399 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
401 g_mutex_lock (priv->lock);
402 empathy_video_widget_element_set_sink_properties_unlocked (self);
403 g_mutex_unlock (priv->lock);
407 empathy_video_widget_element_added_cb (FsElementAddedNotifier *notifier,
408 GstBin *bin, GstElement *element, EmpathyVideoWidget *self)
410 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
412 /* We assume the overlay is the sink */
413 g_mutex_lock (priv->lock);
414 if (priv->overlay == NULL && GST_IS_X_OVERLAY (element))
416 priv->overlay = element;
417 g_object_add_weak_pointer (G_OBJECT (element),
418 (gpointer) &priv->overlay);
419 empathy_video_widget_element_set_sink_properties_unlocked (self);
420 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
422 g_mutex_unlock (priv->lock);
426 empathy_video_widget_sync_message_cb (GstBus *bus, GstMessage *message,
427 EmpathyVideoWidget *self)
429 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
430 const GstStructure *s;
432 if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
435 if (GST_MESSAGE_SRC (message) != (GstObject *) priv->overlay)
438 s = gst_message_get_structure (message);
440 if (gst_structure_has_name (s, "prepare-xwindow-id"))
442 g_assert (gtk_widget_get_realized (GTK_WIDGET (self)));
443 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
444 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (self))));
449 empathy_video_widget_draw (GtkWidget *widget,
452 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (widget);
453 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
454 GtkAllocation allocation;
456 if (priv->overlay == NULL)
458 gtk_widget_get_allocation (widget, &allocation);
460 gtk_render_frame (gtk_widget_get_style_context (widget), cr,
462 gtk_widget_get_allocated_width (widget),
463 gtk_widget_get_allocated_height (widget));
467 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
468 GDK_WINDOW_XID (gtk_widget_get_window (widget)));
470 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
476 empathy_video_widget_new_with_size (GstBus *bus, gint width, gint height)
478 g_return_val_if_fail (bus != NULL, NULL);
480 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
483 "min-height", height,
488 empathy_video_widget_new (GstBus *bus)
490 g_return_val_if_fail (bus != NULL, NULL);
492 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
498 empathy_video_widget_get_sink (EmpathyVideoWidget *widget)
500 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
502 return priv->sink_pad;
506 empathy_video_widget_get_element (EmpathyVideoWidget *widget)
508 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
510 return priv->videosink;