Add audio/video sink and source abstractions

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>

svn path=/trunk/; revision=2384

10 files changed, 946 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index c5f912e5a..80b208cc8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -111,6 +111,7 @@ PKG_CHECK_MODULES(EMPATHY,
    libebook-1.2
    libcanberra-gtk >= 0.4
    gstreamer-0.10
+   gstreamer-interfaces-0.10
 ])
 
 PKG_CHECK_MODULES(LIBNOTIFY, libnotify >= $LIBNOTIFY_REQUIRED)
diff --git a/libempathy-gtk/Makefile.am b/libempathy-gtk/Makefile.am
index b9c448581..46d03167e 100644
--- a/libempathy-gtk/Makefile.am
+++ b/libempathy-gtk/Makefile.am
@@ -37,6 +37,10 @@ libempathy_gtk_la_SOURCES =             	\
 	empathy-contact-selector.c		\
 	empathy-contact-widget.c		\
 	empathy-geometry.c			\
+	empathy-audio-sink.c			\
+	empathy-audio-src.c			\
+	empathy-video-src.c			\
+	empathy-video-widget.c			\
 	empathy-irc-network-dialog.c		\
 	empathy-log-window.c			\
 	empathy-new-message-dialog.c		\
@@ -85,6 +89,10 @@ libempathy_gtk_headers =			\
 	empathy-contact-selector.h		\
 	empathy-contact-widget.h		\
 	empathy-geometry.h			\
+	empathy-audio-sink.h			\
+	empathy-audio-src.h			\
+	empathy-video-src.h			\
+	empathy-video-widget.h			\
 	empathy-images.h			\
 	empathy-irc-network-dialog.h		\
 	empathy-log-window.h			\
diff --git a/libempathy-gtk/empathy-audio-sink.c b/libempathy-gtk/empathy-audio-sink.c
new file mode 100644
index 000000000..8db046a85
--- /dev/null
+++ b/libempathy-gtk/empathy-audio-sink.c
@@ -0,0 +1,124 @@
+/*
+ * empathy-gst-audio-sink.c - Source for EmpathyGstAudioSink
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "empathy-audio-sink.h"
+
+G_DEFINE_TYPE(EmpathyGstAudioSink, empathy_audio_sink, GST_TYPE_BIN)
+
+/* signal enum */
+#if 0
+enum
+{
+    LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = {0};
+#endif
+
+/* private structure */
+typedef struct _EmpathyGstAudioSinkPrivate EmpathyGstAudioSinkPrivate;
+
+struct _EmpathyGstAudioSinkPrivate
+{
+  gboolean dispose_has_run;
+  GstElement *sink;
+};
+
+#define EMPATHY_GST_AUDIO_SINK_GET_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SINK, \
+  EmpathyGstAudioSinkPrivate))
+
+static void
+empathy_audio_sink_init (EmpathyGstAudioSink *obj)
+{
+  EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (obj);
+  GstElement *resample;
+  GstPad *ghost, *sink;
+
+  /* allocate any data required by the object here */
+  resample = gst_element_factory_make ("audioresample", NULL);
+
+  priv->sink = gst_element_factory_make ("gconfaudiosink", NULL);
+
+  gst_bin_add_many (GST_BIN (obj), resample, priv->sink, NULL);
+  gst_element_link_many (resample, priv->sink, NULL);
+
+  sink = gst_element_get_static_pad (resample, "sink");
+
+  ghost = gst_ghost_pad_new ("sink", sink);
+  gst_element_add_pad (GST_ELEMENT (obj), ghost);
+
+  gst_object_unref (G_OBJECT (sink));
+}
+
+static void empathy_audio_sink_dispose (GObject *object);
+static void empathy_audio_sink_finalize (GObject *object);
+
+static void
+empathy_audio_sink_class_init (EmpathyGstAudioSinkClass
+  *empathy_audio_sink_class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_sink_class);
+
+  g_type_class_add_private (empathy_audio_sink_class,
+    sizeof (EmpathyGstAudioSinkPrivate));
+
+  object_class->dispose = empathy_audio_sink_dispose;
+  object_class->finalize = empathy_audio_sink_finalize;
+}
+
+void
+empathy_audio_sink_dispose (GObject *object)
+{
+  EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
+  EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
+
+  if (priv->dispose_has_run)
+    return;
+
+  priv->dispose_has_run = TRUE;
+
+  /* release any references held by the object here */
+
+  if (G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose)
+    G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose (object);
+}
+
+void
+empathy_audio_sink_finalize (GObject *object)
+{
+  //EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
+  //EmpathyGstAudioSinkPrivate *priv =
+  //  EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
+
+  /* free any data held directly by the object here */
+
+  G_OBJECT_CLASS (empathy_audio_sink_parent_class)->finalize (object);
+}
+
+GstElement *
+empathy_audio_sink_new (void)
+{
+  return GST_ELEMENT (g_object_new (EMPATHY_TYPE_GST_AUDIO_SINK, NULL));
+}
diff --git a/libempathy-gtk/empathy-audio-sink.h b/libempathy-gtk/empathy-audio-sink.h
new file mode 100644
index 000000000..2a222b2f7
--- /dev/null
+++ b/libempathy-gtk/empathy-audio-sink.h
@@ -0,0 +1,63 @@
+/*
+ * empathy-gst-video-sink.h - Header for EmpathyGstAudioSink
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __EMPATHY_GST_AUDIO_SINK_H__
+#define __EMPATHY_GST_AUDIO_SINK_H__
+
+#include <glib-object.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+typedef struct _EmpathyGstAudioSink EmpathyGstAudioSink;
+typedef struct _EmpathyGstAudioSinkClass EmpathyGstAudioSinkClass;
+
+struct _EmpathyGstAudioSinkClass {
+    GstBinClass parent_class;
+};
+
+struct _EmpathyGstAudioSink {
+    GstBin parent;
+};
+
+GType empathy_audio_sink_get_type(void);
+
+/* TYPE MACROS */
+#define EMPATHY_TYPE_GST_AUDIO_SINK \
+  (empathy_audio_sink_get_type())
+#define EMPATHY_GST_AUDIO_SINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), EMPATHY_TYPE_GST_AUDIO_SINK, \
+    EmpathyGstAudioSink))
+#define EMPATHY_GST_AUDIO_SINK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass), EMPATHY_TYPE_GST_AUDIO_SINK, \
+    EmpathyGstAudioSinkClass))
+#define EMPATHY_IS_GST_AUDIO_SINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), EMPATHY_TYPE_GST_AUDIO_SINK))
+#define EMPATHY_IS_GST_AUDIO_SINK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass), EMPATHY_TYPE_GST_AUDIO_SINK))
+#define EMPATHY_GST_AUDIO_SINK_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), EMPATHY_TYPE_GST_AUDIO_SINK, \
+    EmpathyGstAudioSinkClass))
+
+GstElement *empathy_audio_sink_new (void);
+
+G_END_DECLS
+
+#endif /* #ifndef __EMPATHY_GST_AUDIO_SINK_H__*/
diff --git a/libempathy-gtk/empathy-audio-src.c b/libempathy-gtk/empathy-audio-src.c
new file mode 100644
index 000000000..c7437e93e
--- /dev/null
+++ b/libempathy-gtk/empathy-audio-src.c
@@ -0,0 +1,125 @@
+/*
+ * empathy-gst-audio-src.c - Source for EmpathyGstAudioSrc
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "empathy-audio-src.h"
+
+G_DEFINE_TYPE(EmpathyGstAudioSrc, empathy_audio_src, GST_TYPE_BIN)
+
+/* signal enum */
+#if 0
+enum
+{
+    LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = {0};
+#endif
+
+/* private structure */
+typedef struct _EmpathyGstAudioSrcPrivate EmpathyGstAudioSrcPrivate;
+
+struct _EmpathyGstAudioSrcPrivate
+{
+  gboolean dispose_has_run;
+  GstElement *src;
+};
+
+#define EMPATHY_GST_AUDIO_SRC_GET_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SRC, \
+  EmpathyGstAudioSrcPrivate))
+
+static void
+empathy_audio_src_init (EmpathyGstAudioSrc *obj)
+{
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (obj);
+  //GstElement *resample;
+  GstPad *ghost, *src;
+
+  /* allocate any data required by the object here */
+  //resample = gst_element_factory_make ("audioresample", NULL);
+
+  priv->src = gst_element_factory_make ("gconfaudiosrc", NULL);
+
+  //gst_bin_add_many (GST_BIN (obj), priv->src, resample, NULL);
+  gst_bin_add_many (GST_BIN (obj), priv->src, NULL);
+  //gst_element_link_many (priv->src, resample, NULL);
+
+  //src = gst_element_get_static_pad (resample, "src");
+  src = gst_element_get_static_pad (priv->src, "src");
+
+  ghost = gst_ghost_pad_new ("src", src);
+  gst_element_add_pad (GST_ELEMENT (obj), ghost);
+
+  gst_object_unref (G_OBJECT (src));
+}
+
+static void empathy_audio_src_dispose (GObject *object);
+static void empathy_audio_src_finalize (GObject *object);
+
+static void
+empathy_audio_src_class_init (EmpathyGstAudioSrcClass
+  *empathy_audio_src_class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_src_class);
+
+  g_type_class_add_private (empathy_audio_src_class,
+    sizeof (EmpathyGstAudioSrcPrivate));
+
+  object_class->dispose = empathy_audio_src_dispose;
+  object_class->finalize = empathy_audio_src_finalize;
+}
+
+void
+empathy_audio_src_dispose (GObject *object)
+{
+  EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  if (priv->dispose_has_run)
+    return;
+
+  priv->dispose_has_run = TRUE;
+
+  /* release any references held by the object here */
+
+  if (G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose)
+    G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose (object);
+}
+
+void
+empathy_audio_src_finalize (GObject *object)
+{
+  //EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
+  //EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  /* free any data held directly by the object here */
+
+  G_OBJECT_CLASS (empathy_audio_src_parent_class)->finalize (object);
+}
+
+GstElement *
+empathy_audio_src_new (void)
+{
+  return GST_ELEMENT (g_object_new (EMPATHY_TYPE_GST_AUDIO_SRC, NULL));
+}
diff --git a/libempathy-gtk/empathy-audio-src.h b/libempathy-gtk/empathy-audio-src.h
new file mode 100644
index 000000000..73ebd1578
--- /dev/null
+++ b/libempathy-gtk/empathy-audio-src.h
@@ -0,0 +1,63 @@
+/*
+ * empathy-gst-video-src.h - Header for EmpathyGstAudioSrc
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __EMPATHY_GST_AUDIO_SRC_H__
+#define __EMPATHY_GST_AUDIO_SRC_H__
+
+#include <glib-object.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+typedef struct _EmpathyGstAudioSrc EmpathyGstAudioSrc;
+typedef struct _EmpathyGstAudioSrcClass EmpathyGstAudioSrcClass;
+
+struct _EmpathyGstAudioSrcClass {
+    GstBinClass parent_class;
+};
+
+struct _EmpathyGstAudioSrc {
+    GstBin parent;
+};
+
+GType empathy_audio_src_get_type(void);
+
+/* TYPE MACROS */
+#define EMPATHY_TYPE_GST_AUDIO_SRC \
+  (empathy_audio_src_get_type())
+#define EMPATHY_GST_AUDIO_SRC(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), EMPATHY_TYPE_GST_AUDIO_SRC, \
+    EmpathyGstAudioSrc))
+#define EMPATHY_GST_AUDIO_SRC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass), EMPATHY_TYPE_GST_AUDIO_SRC, \
+    EmpathyGstAudioSrcClass))
+#define EMPATHY_IS_GST_AUDIO_SRC(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), EMPATHY_TYPE_GST_AUDIO_SRC))
+#define EMPATHY_IS_GST_AUDIO_SRC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass), EMPATHY_TYPE_GST_AUDIO_SRC))
+#define EMPATHY_GST_AUDIO_SRC_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), EMPATHY_TYPE_GST_AUDIO_SRC, \
+    EmpathyGstAudioSrcClass))
+
+GstElement *empathy_audio_src_new (void);
+
+G_END_DECLS
+
+#endif /* #ifndef __EMPATHY_GST_AUDIO_SRC_H__*/
diff --git a/libempathy-gtk/empathy-video-src.c b/libempathy-gtk/empathy-video-src.c
new file mode 100644
index 000000000..3a654830c
--- /dev/null
+++ b/libempathy-gtk/empathy-video-src.c
@@ -0,0 +1,134 @@
+/*
+ * empathy-gst-video-src.c - Source for EmpathyGstVideoSrc
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "empathy-video-src.h"
+
+G_DEFINE_TYPE(EmpathyGstVideoSrc, empathy_video_src, GST_TYPE_BIN)
+
+/* signal enum */
+#if 0
+enum
+{
+    LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = {0};
+#endif
+
+/* private structure */
+typedef struct _EmpathyGstVideoSrcPrivate EmpathyGstVideoSrcPrivate;
+
+struct _EmpathyGstVideoSrcPrivate
+{
+  gboolean dispose_has_run;
+  GstElement *src;
+};
+
+#define EMPATHY_GST_VIDEO_SRC_GET_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_VIDEO_SRC, \
+    EmpathyGstVideoSrcPrivate))
+
+static void
+empathy_video_src_init (EmpathyGstVideoSrc *obj)
+{
+  EmpathyGstVideoSrcPrivate *priv = EMPATHY_GST_VIDEO_SRC_GET_PRIVATE (obj);
+  GstElement *scale, *rate, *colorspace, *capsfilter;
+  GstPad *ghost, *src;
+  GstCaps *caps;
+
+  /* allocate any data required by the object here */
+  scale = gst_element_factory_make ("videoscale", NULL);
+  rate = gst_element_factory_make ("videorate", NULL);
+  colorspace = gst_element_factory_make ("ffmpegcolorspace", NULL);
+
+  capsfilter = gst_element_factory_make ("capsfilter", NULL);
+  caps = gst_caps_new_simple ("video/x-raw-yuv",
+    "width", G_TYPE_INT, 320,
+    "height", G_TYPE_INT, 240,
+    NULL);
+
+  g_object_set (G_OBJECT (capsfilter), "caps", caps, NULL);
+
+  priv->src = gst_element_factory_make ("gconfvideosrc", NULL);
+
+  gst_bin_add_many (GST_BIN (obj), priv->src, scale, rate,
+    colorspace, capsfilter, NULL);
+  gst_element_link_many (priv->src, scale, rate, colorspace, capsfilter, NULL);
+
+  src = gst_element_get_static_pad (capsfilter, "src");
+
+  ghost = gst_ghost_pad_new ("src", src);
+  gst_element_add_pad (GST_ELEMENT (obj), ghost);
+
+  gst_object_unref (G_OBJECT (src));
+}
+
+static void empathy_video_src_dispose (GObject *object);
+static void empathy_video_src_finalize (GObject *object);
+
+static void
+empathy_video_src_class_init (EmpathyGstVideoSrcClass *empathy_video_src_class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (empathy_video_src_class);
+
+  g_type_class_add_private (empathy_video_src_class,
+    sizeof (EmpathyGstVideoSrcPrivate));
+
+  object_class->dispose = empathy_video_src_dispose;
+  object_class->finalize = empathy_video_src_finalize;
+}
+
+void
+empathy_video_src_dispose (GObject *object)
+{
+  EmpathyGstVideoSrc *self = EMPATHY_GST_VIDEO_SRC (object);
+  EmpathyGstVideoSrcPrivate *priv = EMPATHY_GST_VIDEO_SRC_GET_PRIVATE (self);
+
+  if (priv->dispose_has_run)
+    return;
+
+  priv->dispose_has_run = TRUE;
+
+  /* release any references held by the object here */
+
+  if (G_OBJECT_CLASS (empathy_video_src_parent_class)->dispose)
+    G_OBJECT_CLASS (empathy_video_src_parent_class)->dispose (object);
+}
+
+void
+empathy_video_src_finalize (GObject *object)
+{
+  //EmpathyGstVideoSrc *self = EMPATHY_GST_VIDEO_SRC (object);
+  //EmpathyGstVideoSrcPrivate *priv = EMPATHY_GST_VIDEO_SRC_GET_PRIVATE (self);
+
+  /* free any data held directly by the object here */
+
+  G_OBJECT_CLASS (empathy_video_src_parent_class)->finalize (object);
+}
+
+GstElement *
+empathy_video_src_new (void)
+{
+  return GST_ELEMENT (g_object_new (EMPATHY_TYPE_GST_VIDEO_SRC, NULL));
+}
diff --git a/libempathy-gtk/empathy-video-src.h b/libempathy-gtk/empathy-video-src.h
new file mode 100644
index 000000000..3af2efe8b
--- /dev/null
+++ b/libempathy-gtk/empathy-video-src.h
@@ -0,0 +1,63 @@
+/*
+ * empathy-gst-video-src.h - Header for EmpathyGstVideoSrc
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __EMPATHY_GST_VIDEO_SRC_H__
+#define __EMPATHY_GST_VIDEO_SRC_H__
+
+#include <glib-object.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+typedef struct _EmpathyGstVideoSrc EmpathyGstVideoSrc;
+typedef struct _EmpathyGstVideoSrcClass EmpathyGstVideoSrcClass;
+
+struct _EmpathyGstVideoSrcClass {
+    GstBinClass parent_class;
+};
+
+struct _EmpathyGstVideoSrc {
+    GstBin parent;
+};
+
+GType empathy_video_src_get_type(void);
+
+/* TYPE MACROS */
+#define EMPATHY_TYPE_GST_VIDEO_SRC \
+  (empathy_video_src_get_type())
+#define EMPATHY_GST_VIDEO_SRC(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), EMPATHY_TYPE_GST_VIDEO_SRC, \
+    EmpathyGstVideoSrc))
+#define EMPATHY_GST_VIDEO_SRC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass), EMPATHY_TYPE_GST_VIDEO_SRC, \
+    EmpathyGstVideoSrcClass))
+#define EMPATHY_IS_GST_VIDEO_SRC(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), EMPATHY_TYPE_GST_VIDEO_SRC))
+#define EMPATHY_IS_GST_VIDEO_SRC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass), EMPATHY_TYPE_GST_VIDEO_SRC))
+#define EMPATHY_GST_VIDEO_SRC_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), EMPATHY_TYPE_GST_VIDEO_SRC, \
+    EmpathyGstVideoSrcClass))
+
+GstElement *empathy_video_src_new (void);
+
+G_END_DECLS
+
+#endif /* #ifndef __EMPATHY_GST_VIDEO_SRC_H__*/
diff --git a/libempathy-gtk/empathy-video-widget.c b/libempathy-gtk/empathy-video-widget.c
new file mode 100644
index 000000000..7941b3198
--- /dev/null
+++ b/libempathy-gtk/empathy-video-widget.c
@@ -0,0 +1,298 @@
+/*
+ * empathy-gst-gtk-widget.c - Source for EmpathyVideoWidget
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <gdk/gdkx.h>
+#include <gst/interfaces/xoverlay.h>
+#include <gst/farsight/fs-element-added-notifier.h>
+
+#include "empathy-video-widget.h"
+
+G_DEFINE_TYPE(EmpathyVideoWidget, empathy_video_widget,
+  GTK_TYPE_DRAWING_AREA)
+
+static void empathy_video_widget_element_added_cb (
+  FsElementAddedNotifier *notifier, GstBin *bin, GstElement *element,
+  EmpathyVideoWidget *self);
+
+static void empathy_video_widget_sync_message_cb (
+  GstBus *bus, GstMessage *message, EmpathyVideoWidget *self);
+
+/* signal enum */
+#if 0
+enum
+{
+    LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = {0};
+#endif
+
+enum {
+  PROP_GST_ELEMENT = 1,
+  PROP_GST_BUS,
+};
+
+/* private structure */
+typedef struct _EmpathyVideoWidgetPriv EmpathyVideoWidgetPriv;
+
+struct _EmpathyVideoWidgetPriv
+{
+  gboolean dispose_has_run;
+  GstBus *bus;
+  GstElement *videosink;
+  GstPad *sink_pad;
+  GstElement *overlay;
+  FsElementAddedNotifier *notifier;
+};
+
+#define GET_PRIV(o)     (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
+  EMPATHY_TYPE_GST_GTK_WIDGET, EmpathyVideoWidgetPriv))
+
+static void
+empathy_video_widget_init (EmpathyVideoWidget *obj)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (obj);
+
+  priv->notifier = fs_element_added_notifier_new ();
+  g_signal_connect (priv->notifier, "element-added",
+    G_CALLBACK (empathy_video_widget_element_added_cb),
+    obj);
+
+  gtk_widget_set_size_request (GTK_WIDGET (obj), 320, 240);
+
+  GTK_WIDGET_UNSET_FLAGS (GTK_WIDGET (obj), GTK_DOUBLE_BUFFERED);
+}
+
+static void
+empathy_video_widget_constructed (GObject *object)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
+
+  priv->videosink = gst_element_factory_make ("gconfvideosink", NULL);
+  priv->sink_pad = gst_element_get_static_pad (priv->videosink, "sink");
+
+  fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->videosink));
+  gst_bus_enable_sync_message_emission (priv->bus);
+
+  g_signal_connect (priv->bus, "sync-message",
+    G_CALLBACK (empathy_video_widget_sync_message_cb), object);
+
+}
+
+static void empathy_video_widget_dispose (GObject *object);
+static void empathy_video_widget_finalize (GObject *object);
+static gboolean empathy_video_widget_expose_event (GtkWidget *widget,
+  GdkEventExpose *event);
+
+static void
+empathy_video_widget_set_property (GObject *object,
+  guint property_id, const GValue *value, GParamSpec *pspec)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
+
+  switch (property_id)
+    {
+      case PROP_GST_BUS:
+        priv->bus = g_value_dup_object (value);
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+empathy_video_widget_get_property (GObject *object,
+  guint property_id, GValue *value, GParamSpec *pspec)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (object);
+
+  switch (property_id)
+    {
+      case PROP_GST_ELEMENT:
+        g_value_set_object (value, priv->videosink);
+        break;
+      case PROP_GST_BUS:
+        g_value_set_object (value, priv->bus);
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+
+static void
+empathy_video_widget_class_init (
+  EmpathyVideoWidgetClass *empathy_video_widget_class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (empathy_video_widget_class);
+  GtkWidgetClass *widget_class =
+    GTK_WIDGET_CLASS (empathy_video_widget_class);
+  GParamSpec *param_spec;
+
+  g_type_class_add_private (empathy_video_widget_class,
+    sizeof (EmpathyVideoWidgetPriv));
+
+  object_class->dispose = empathy_video_widget_dispose;
+  object_class->finalize = empathy_video_widget_finalize;
+  object_class->constructed = empathy_video_widget_constructed;
+
+  object_class->set_property = empathy_video_widget_set_property;
+  object_class->get_property = empathy_video_widget_get_property;
+
+  widget_class->expose_event = empathy_video_widget_expose_event;
+
+  param_spec = g_param_spec_object ("gst-element",
+    "gst-element", "The underlaying gstreamer element",
+    GST_TYPE_ELEMENT,
+    G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_GST_ELEMENT, param_spec);
+
+  param_spec = g_param_spec_object ("gst-bus",
+    "gst-bus",
+    "The toplevel bus from the pipeline in which this bin will be added",
+    GST_TYPE_BUS,
+    G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_GST_BUS, param_spec);
+}
+
+void
+empathy_video_widget_dispose (GObject *object)
+{
+  EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
+
+  if (priv->dispose_has_run)
+    return;
+
+  priv->dispose_has_run = TRUE;
+
+  if (priv->bus != NULL)
+    g_object_unref (priv->bus);
+
+  priv->bus = NULL;
+
+  /* release any references held by the object here */
+
+  if (G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose)
+    G_OBJECT_CLASS (empathy_video_widget_parent_class)->dispose (object);
+}
+
+void
+empathy_video_widget_finalize (GObject *object)
+{
+  //EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (object);
+  //EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
+
+  /* free any data held directly by the object here */
+
+  G_OBJECT_CLASS (empathy_video_widget_parent_class)->finalize (object);
+}
+
+static void
+empathy_video_widget_element_added_cb (FsElementAddedNotifier *notifier,
+  GstBin *bin, GstElement *element, EmpathyVideoWidget *self)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
+
+  if (priv->overlay == NULL && GST_IS_X_OVERLAY (element))
+    {
+      priv->overlay = element;
+      gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
+    }
+
+  if (g_object_class_find_property (
+      G_OBJECT_GET_CLASS (element), "force-aspect-ratio"))
+    {
+      g_object_set (G_OBJECT (element), "force-aspect-ratio", TRUE, NULL);
+    }
+}
+
+static void
+empathy_video_widget_sync_message_cb (GstBus *bus, GstMessage *message,
+  EmpathyVideoWidget *self)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
+  const GstStructure *s;
+
+  if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
+    return;
+
+  if (GST_MESSAGE_SRC (message) != (GstObject *) priv->overlay)
+    return;
+
+  s = gst_message_get_structure (message);
+
+  if (gst_structure_has_name (s, "prepare-xwindow-id"))
+    {
+      gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
+        GDK_WINDOW_XID (GTK_WIDGET (self)->window));
+    }
+}
+
+static gboolean
+empathy_video_widget_expose_event (GtkWidget *widget, GdkEventExpose *event)
+{
+  EmpathyVideoWidget *self = EMPATHY_VIDEO_WIDGET (widget);
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (self);
+
+  if (event != NULL && event->count > 0)
+    return TRUE;
+
+  if (priv->overlay == NULL)
+    return TRUE;
+
+  gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (priv->overlay),
+    GDK_WINDOW_XID (widget->window));
+
+  gst_x_overlay_expose (GST_X_OVERLAY (priv->overlay));
+
+  return TRUE;
+}
+
+
+GtkWidget *
+empathy_video_widget_new (GstBus *bus)
+{
+  g_return_val_if_fail (bus != NULL, NULL);
+
+  return GTK_WIDGET (g_object_new (EMPATHY_TYPE_GST_GTK_WIDGET,
+    "gst-bus", bus,
+    NULL));
+}
+
+GstPad *
+empathy_video_widget_get_sink (EmpathyVideoWidget *widget)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
+
+  return priv->sink_pad;
+}
+
+GstElement *
+empathy_video_widget_get_element (EmpathyVideoWidget *widget)
+{
+  EmpathyVideoWidgetPriv *priv = GET_PRIV (widget);
+
+  return priv->videosink;
+}
diff --git a/libempathy-gtk/empathy-video-widget.h b/libempathy-gtk/empathy-video-widget.h
new file mode 100644
index 000000000..3ced3beb0
--- /dev/null
+++ b/libempathy-gtk/empathy-video-widget.h
@@ -0,0 +1,67 @@
+/*
+ * empathy-gst-gtk-widget.h - Header for EmpathyVideoWidget
+ * Copyright (C) 2008 Collabora Ltd.
+ * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __EMPATHY_VIDEO_WIDGET_H__
+#define __EMPATHY_VIDEO_WIDGET_H__
+
+#include <glib-object.h>
+#include <gst/gst.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+typedef struct _EmpathyVideoWidget EmpathyVideoWidget;
+typedef struct _EmpathyVideoWidgetClass EmpathyVideoWidgetClass;
+
+struct _EmpathyVideoWidgetClass {
+    GtkDrawingAreaClass parent_class;
+};
+
+struct _EmpathyVideoWidget {
+    GtkDrawingArea parent;
+};
+
+GType empathy_video_widget_get_type(void);
+
+/* TYPE MACROS */
+#define EMPATHY_TYPE_GST_GTK_WIDGET \
+  (empathy_video_widget_get_type())
+#define EMPATHY_VIDEO_WIDGET(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), EMPATHY_TYPE_GST_GTK_WIDGET, \
+    EmpathyVideoWidget))
+#define EMPATHY_VIDEO_WIDGET_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass), EMPATHY_TYPE_GST_GTK_WIDGET, \
+  EmpathyVideoWidgetClass))
+#define EMPATHY_IS_GST_GTK_WIDGET(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), EMPATHY_TYPE_GST_GTK_WIDGET))
+#define EMPATHY_IS_GST_GTK_WIDGET_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass), EMPATHY_TYPE_GST_GTK_WIDGET))
+#define EMPATHY_VIDEO_WIDGET_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), EMPATHY_TYPE_GST_GTK_WIDGET, \
+  EmpathyVideoWidgetClass))
+
+GtkWidget *empathy_video_widget_new (GstBus *bus);
+
+GstElement *empathy_video_widget_get_element (EmpathyVideoWidget *widget);
+GstPad *empathy_video_widget_get_sink (EmpathyVideoWidget *widget);
+
+G_END_DECLS
+
+#endif /* #ifndef __EMPATHY_VIDEO_WIDGET_H__*/