pulsevideo: add gstreamer elements

Add custom gstreamer elements to pad/depay
Add pv_init() to register new elements

src/gst/gstfdpay.h

@@ -0,0 +1,49 @@
+/* GStreamer
+ * Copyright (C) 2014 William Manley <will@williammanley.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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 _GST_FDPAY_H_
+#define _GST_FDPAY_H_
+
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+#define GST_TYPE_FDPAY   (gst_fdpay_get_type())
+#define GST_FDPAY(obj)   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FDPAY,GstFdpay))
+#define GST_FDPAY_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FDPAY,GstFdpayClass))
+#define GST_IS_FDPAY(obj)   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FDPAY))
+#define GST_IS_FDPAY_CLASS(obj)   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FDPAY))
+typedef struct _GstFdpay GstFdpay;
+typedef struct _GstFdpayClass GstFdpayClass;
+
+struct _GstFdpay
+{
+  GstBaseTransform base_fdpay;
+  GstAllocator * allocator;
+
+};
+
+struct _GstFdpayClass
+{
+  GstBaseTransformClass base_fdpay_class;
+};
+
+GType gst_fdpay_get_type (void);
+
+G_END_DECLS
+#endif