Add audio/video sink and source abstractions

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

svn path=/trunk/; revision=2384

1 files changed, 134 insertions, 0 deletions

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));
+}