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
27 #include <gst/interfaces/xoverlay.h>
28 #include <gst/farsight/fs-element-added-notifier.h>
30 #include "empathy-video-widget.h"
32 G_DEFINE_TYPE(EmpathyVideoWidget, empathy_video_widget,
33 GTK_TYPE_DRAWING_AREA)
35 static void empathy_video_widget_element_added_cb (
36 FsElementAddedNotifier *notifier, GstBin *bin, GstElement *element,
37 EmpathyVideoWidget *self);
39 static void empathy_video_widget_sync_message_cb (
40 GstBus *bus, GstMessage *message, EmpathyVideoWidget *self);
49 static guint signals[LAST_SIGNAL] = {0};
62 /* private structure */
63 typedef struct _EmpathyVideoWidgetPriv EmpathyVideoWidgetPriv;
65 struct _EmpathyVideoWidgetPriv
67 gboolean dispose_has_run;
69 GstElement *videosink;
73 FsElementAddedNotifier *notifier;
83 #define GET_PRIV(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
84 EMPATHY_TYPE_VIDEO_WIDGET, EmpathyVideoWidgetPriv))
87 empathy_video_widget_init (EmpathyVideoWidget *obj)
89 EmpathyVideoWidgetPriv *priv = GET_PRIV (obj);
92 priv->lock = g_mutex_new ();
94 priv->notifier = fs_element_added_notifier_new ();
95 g_signal_connect (priv->notifier, "element-added",
96 G_CALLBACK (empathy_video_widget_element_added_cb),
99 if (gdk_rgba_parse (&black, "Black"))
100 gtk_widget_override_background_color (GTK_WIDGET (obj), 0, &black);
102 gtk_widget_set_double_buffered (GTK_WIDGET (obj), FALSE);
106 empathy_video_widget_realized (GtkWidget *widget, gpointer user_data)
108 /* requesting the XID forces the GdkWindow to be native in GTK+ 2.18
109 * onwards, requesting the native window in a thread causes a BadWindowID,
110 * so we need to request it now. We could call gdk_window_ensure_native(),
111 * but that would mean we require GTK+ 2.18, so instead we call this */
112 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (widget)));
116 empathy_video_widget_constructed (GObject *object)
118 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
119 GstElement *colorspace, *videoscale, *sink;
122 g_signal_connect (object, "realize",
123 G_CALLBACK (empathy_video_widget_realized), NULL);
125 priv->videosink = gst_bin_new (NULL);
127 gst_object_ref (priv->videosink);
128 gst_object_sink (priv->videosink);
130 priv->sink_pad = gst_element_get_static_pad (priv->videosink, "sink");
132 sink = gst_element_factory_make ("gconfvideosink", NULL);
133 g_assert (sink != NULL);
135 videoscale = gst_element_factory_make ("videoscale", NULL);
136 g_assert (videoscale != NULL);
138 g_object_set (videoscale, "qos", FALSE, NULL);
140 colorspace = gst_element_factory_make ("ffmpegcolorspace", NULL);
141 g_assert (colorspace != NULL);
143 g_object_set (colorspace, "qos", FALSE, NULL);
145 priv->flip = gst_element_factory_make ("videoflip", NULL);
146 g_assert (priv->flip != NULL);
148 gst_bin_add_many (GST_BIN (priv->videosink), colorspace, videoscale,
149 priv->flip, sink, NULL);
151 if (!gst_element_link (colorspace, videoscale))
152 g_error ("Failed to link ffmpegcolorspace and videoscale");
154 if (!gst_element_link (videoscale, priv->flip))
155 g_error ("Failed to link videoscale and videoflip");
157 if (!gst_element_link (priv->flip, sink))
158 g_error ("Failed to link videoflip and gconfvideosink");
160 pad = gst_element_get_static_pad (colorspace, "sink");
161 g_assert (pad != NULL);
163 priv->sink_pad = gst_ghost_pad_new ("sink", pad);
164 if (!gst_element_add_pad (priv->videosink, priv->sink_pad))
165 g_error ("Couldn't add sink ghostpad to the bin");
167 gst_object_unref (pad);
169 fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->videosink));
170 gst_bus_enable_sync_message_emission (priv->bus);
172 g_signal_connect (priv->bus, "sync-message",
173 G_CALLBACK (empathy_video_widget_sync_message_cb), object);
175 gtk_widget_set_size_request (GTK_WIDGET (object), priv->min_width,
179 static void empathy_video_widget_dispose (GObject *object);
180 static void empathy_video_widget_finalize (GObject *object);
183 static gboolean empathy_video_widget_draw (GtkWidget *widget,
187 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self);
190 empathy_video_widget_set_property (GObject *object,
191 guint property_id, const GValue *value, GParamSpec *pspec)
193 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
198 priv->bus = g_value_dup_object (value);
201 priv->min_width = g_value_get_int (value);
203 case PROP_MIN_HEIGHT:
204 priv->min_height = g_value_get_int (value);
207 priv->sync = g_value_get_boolean (value);
208 empathy_video_widget_element_set_sink_properties (
209 EMPATHY_VIDEO_WIDGET (object));
212 priv->async = g_value_get_boolean (value);
213 empathy_video_widget_element_set_sink_properties (
214 EMPATHY_VIDEO_WIDGET (object));
216 case PROP_FLIP_VIDEO:
217 priv->flip_video = g_value_get_boolean (value);
218 gst_util_set_object_arg (G_OBJECT (priv->flip), "method",
219 priv->flip_video ? "horizontal-flip" : "none");
222 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
227 empathy_video_widget_get_property (GObject *object,
228 guint property_id, GValue *value, GParamSpec *pspec)
230 EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
234 case PROP_GST_ELEMENT:
235 g_value_set_object (value, priv->videosink);
238 g_value_set_object (value, priv->bus);
241 g_value_set_int (value, priv->min_width);
243 case PROP_MIN_HEIGHT:
244 g_value_set_int (value, priv->min_height);
247 g_value_set_boolean (value, priv->sync);
250 g_value_set_boolean (value, priv->async);
252 case PROP_FLIP_VIDEO:
253 g_value_set_boolean (value, priv->flip_video);
256 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
262 empathy_video_widget_class_init (
263 EmpathyVideoWidgetClass *empathy_video_widget_class)
265 GObjectClass *object_class = G_OBJECT_CLASS (empathy_video_widget_class);
266 GtkWidgetClass *widget_class =
267 GTK_WIDGET_CLASS (empathy_video_widget_class);
268 GParamSpec *param_spec;
270 g_type_class_add_private (empathy_video_widget_class,
271 sizeof (EmpathyVideoWidgetPriv));
273 object_class->dispose = empathy_video_widget_dispose;
274 object_class->finalize = empathy_video_widget_finalize;
275 object_class->constructed = empathy_video_widget_constructed;
277 object_class->set_property = empathy_video_widget_set_property;
278 object_class->get_property = empathy_video_widget_get_property;
280 widget_class->draw = empathy_video_widget_draw;
282 param_spec = g_param_spec_object ("gst-element",
283 "gst-element", "The underlaying gstreamer element",
285 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
286 g_object_class_install_property (object_class, PROP_GST_ELEMENT, param_spec);
288 param_spec = g_param_spec_object ("gst-bus",
290 "The toplevel bus from the pipeline in which this bin will be added",
292 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
293 g_object_class_install_property (object_class, PROP_GST_BUS, param_spec);
295 param_spec = g_param_spec_int ("min-width",
297 "Minimal width of the widget",
298 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_WIDTH,
299 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
300 g_object_class_install_property (object_class, PROP_MIN_WIDTH, param_spec);
302 param_spec = g_param_spec_int ("min-height",
304 "Minimal height of the widget",
305 0, G_MAXINT, EMPATHY_VIDEO_WIDGET_DEFAULT_HEIGHT,
306 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
307 g_object_class_install_property (object_class, PROP_MIN_HEIGHT, param_spec);
309 param_spec = g_param_spec_boolean ("sync",
311 "Whether the underlying sink should be sync or not",
313 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
314 g_object_class_install_property (object_class, PROP_SYNC, param_spec);
316 param_spec = g_param_spec_boolean ("async",
318 "Whether the underlying sink should be async or not",
320 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
321 g_object_class_install_property (object_class, PROP_ASYNC, param_spec);
323 param_spec = g_param_spec_boolean ("flip-video",
325 "Whether the video should be flipped horizontally or not",
327 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
328 g_object_class_install_property (object_class, PROP_FLIP_VIDEO, param_spec);
332 empathy_video_widget_dispose (GObject *object)
334 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
335 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
337 if (priv->dispose_has_run)
340 priv->dispose_has_run = TRUE;
342 g_signal_handlers_disconnect_by_func (priv->bus,
343 empathy_video_widget_sync_message_cb, object);
345 if (priv->bus != NULL)
346 g_object_unref (priv->bus);
350 if (priv->videosink != NULL)
351 g_object_unref (priv->videosink);
353 priv->videosink = NULL;
356 /* release any references held by the object here */
358 if (G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose)
359 G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose (object);
363 empathy_video_widget_finalize (GObject *object)
365 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
366 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
368 /* free any data held directly by the object here */
369 g_mutex_free (priv->lock);
371 G_OBJECT_CLASS (empathy_video_widget_parent_class)->finalize (object);
376 empathy_video_widget_element_set_sink_properties_unlocked (
377 EmpathyVideoWidget *self)
379 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
381 if (priv->overlay == NULL)
384 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
385 "force-aspect-ratio"))
386 g_object_set (G_OBJECT (priv->overlay), "force-aspect-ratio", TRUE, NULL);
388 if (g_object_class_find_property (
389 G_OBJECT_GET_CLASS (priv->overlay), "sync"))
390 g_object_set (G_OBJECT (priv->overlay), "sync", priv->sync, NULL);
392 if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->overlay),
394 g_object_set (G_OBJECT (priv->overlay), "async", priv->async, NULL);
398 empathy_video_widget_element_set_sink_properties (EmpathyVideoWidget *self)
400 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
402 g_mutex_lock (priv->lock);
403 empathy_video_widget_element_set_sink_properties_unlocked (self);
404 g_mutex_unlock (priv->lock);
408 empathy_video_widget_element_added_cb (FsElementAddedNotifier *notifier,
409 GstBin *bin, GstElement *element, EmpathyVideoWidget *self)
411 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
413 /* We assume the overlay is the sink */
414 g_mutex_lock (priv->lock);
415 if (priv->overlay == NULL && GST_IS_X_OVERLAY (element))
417 priv->overlay = element;
418 g_object_add_weak_pointer (G_OBJECT (element),
419 (gpointer) &priv->overlay);
420 empathy_video_widget_element_set_sink_properties_unlocked (self);
421 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
423 g_mutex_unlock (priv->lock);
427 empathy_video_widget_sync_message_cb (GstBus *bus, GstMessage *message,
428 EmpathyVideoWidget *self)
430 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
431 const GstStructure *s;
433 if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
436 if (GST_MESSAGE_SRC (message) != (GstObject *) priv->overlay)
439 s = gst_message_get_structure (message);
441 if (gst_structure_has_name (s, "prepare-xwindow-id"))
443 g_assert (gtk_widget_get_realized (GTK_WIDGET (self)));
444 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
445 GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (self))));
450 empathy_video_widget_draw (GtkWidget *widget,
453 EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (widget);
454 EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
455 GtkAllocation allocation;
457 if (priv->overlay == NULL)
459 gtk_widget_get_allocation (widget, &allocation);
461 gtk_render_frame (gtk_widget_get_style_context (widget), cr,
463 gtk_widget_get_allocated_width (widget),
464 gtk_widget_get_allocated_height (widget));
468 gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
469 GDK_WINDOW_XID (gtk_widget_get_window (widget)));
471 gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
477 empathy_video_widget_new_with_size (GstBus *bus, gint width, gint height)
479 g_return_val_if_fail (bus != NULL, NULL);
481 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
484 "min-height", height,
489 empathy_video_widget_new (GstBus *bus)
491 g_return_val_if_fail (bus != NULL, NULL);
493 return GTK_WIDGET (g_object_new (EMPATHY_TYPE_VIDEO_WIDGET,
499 empathy_video_widget_get_sink (EmpathyVideoWidget *widget)
501 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
503 return priv->sink_pad;
507 empathy_video_widget_get_element (EmpathyVideoWidget *widget)
509 EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
511 return priv->videosink;