misc hacking

Add introspect API
Move private things to private.h
Use custom main-context for the context, and ensure everything is called
from the custom main-context. does not work well with glib proxy signals
yet.
Work with custom mainloop in the gstreamer element.

src/client/pv-introspect.h

@@ -0,0 +1,68 @@
+/* Pulsevideo
+ * 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 __PV_INTROSPECT_H__
+#define __PV_INTROSPECT_H__
+
+#include <gio/gio.h>
+#include <glib-object.h>
+
+#include <client/pv-context.h>
+
+G_BEGIN_DECLS
+
+/**
+ * PvSourceInfo:
+ * @name: the name of the source
+ * @properties: the properties of the source
+ * @state: the current state of the source
+ *
+ * The source information
+ */
+typedef struct {
+  const char *name;
+  GVariant *properties;
+  PvSourceState state;
+  GVariant *capabilities;
+} PvSourceInfo;
+
+/**
+ * PvSourceInfoFlags:
+ * @PV_SOURCE_INFO_FLAGS_NONE: no flags
+ * @PV_SOURCE_INFO_FLAGS_CAPABILITIES: include capabilities
+ *
+ * Extra flags to pass to pv_context_get_source_info_list.
+ */
+typedef enum {
+  PV_SOURCE_INFO_FLAGS_NONE            = 0,
+  PV_SOURCE_INFO_FLAGS_CAPABILITIES    = (1 << 0)
+} PvSourceInfoFlags;
+
+typedef gboolean (*PvSourceInfoCallback)  (PvContext *c, const PvSourceInfo *info, gpointer userdata);
+
+void            pv_context_list_source_info        (PvContext *context,
+                                                    PvSourceInfoFlags flags,
+                                                    PvSourceInfoCallback cb,
+                                                    GCancellable *cancellable,
+                                                    gpointer user_data);
+
+G_END_DECLS
+
+#endif /* __PV_INTROSPECT_H__ */
+