Introduce the concept of a Node

Make an object for a processing node.
Implement a sink node. Make it possible to implement Sink and Source
interfaces to provide input/output from the node.
Improve pinosdepay to track fds and handle format changes.

pinos/modules/gst/gst-sink.h

@@ -0,0 +1,64 @@
+/* Pinos
+ * Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * 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 __PINOS_GST_SINK_H__
+#define __PINOS_GST_SINK_H__
+
+#include <glib-object.h>
+
+#include <client/pinos.h>
+#include <server/node.h>
+#include <server/sink.h>
+
+G_BEGIN_DECLS
+
+#define PINOS_TYPE_GST_SINK                 (pinos_gst_sink_get_type ())
+#define PINOS_IS_GST_SINK(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PINOS_TYPE_GST_SINK))
+#define PINOS_IS_GST_SINK_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), PINOS_TYPE_GST_SINK))
+#define PINOS_GST_SINK_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), PINOS_TYPE_GST_SINK, PinosGstSinkClass))
+#define PINOS_GST_SINK(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), PINOS_TYPE_GST_SINK, PinosGstSink))
+#define PINOS_GST_SINK_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), PINOS_TYPE_GST_SINK, PinosGstSinkClass))
+#define PINOS_GST_SINK_CAST(obj)            ((PinosGstSink*)(obj))
+#define PINOS_GST_SINK_CLASS_CAST(klass)    ((PinosGstSinkClass*)(klass))
+
+typedef struct _PinosGstSink PinosGstSink;
+typedef struct _PinosGstSinkClass PinosGstSinkClass;
+typedef struct _PinosGstSinkPrivate PinosGstSinkPrivate;
+
+struct _PinosGstSink {
+  PinosSink object;
+
+  PinosGstSinkPrivate *priv;
+};
+
+struct _PinosGstSinkClass {
+  PinosSinkClass parent_class;
+};
+
+GType         pinos_gst_sink_get_type        (void);
+
+PinosSink *   pinos_gst_sink_new             (PinosNode       *node,
+                                              const gchar     *name,
+                                              PinosProperties *properties,
+                                              GstElement      *element,
+                                              GstCaps         *caps);
+
+G_END_DECLS
+
+#endif /* __PINOS_GST_SINK_H__ */