Jabber: initial version of Jingle support

1 files changed, 333 insertions, 0 deletions

diff --git a/include/gst/gstbin.h b/include/gst/gstbin.h
new file mode 100644
index 0000000000..ed6f29dfd9
--- /dev/null
+++ b/include/gst/gstbin.h
@@ -0,0 +1,333 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2000 Wim Taymans <wtay@chello.be>
+ *
+ * gstbin.h: Header for GstBin container object
+ *
+ * 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_BIN_H__
+#define __GST_BIN_H__
+
+#include <gst/gstelement.h>
+#include <gst/gstiterator.h>
+#include <gst/gstbus.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_BIN             (gst_bin_get_type ())
+#define GST_IS_BIN(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_BIN))
+#define GST_IS_BIN_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_BIN))
+#define GST_BIN_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BIN, GstBinClass))
+#define GST_BIN(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_BIN, GstBin))
+#define GST_BIN_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_BIN, GstBinClass))
+#define GST_BIN_CAST(obj)        ((GstBin*)(obj))
+
+/**
+ * GstBinFlags:
+ * @GST_BIN_FLAG_LAST: the last enum in the series of flags for bins.
+ * Derived classes can use this as first value in a list of flags.
+ *
+ * GstBinFlags are a set of flags specific to bins. Most are set/used
+ * internally. They can be checked using the GST_OBJECT_FLAG_IS_SET() macro,
+ * and (un)set using GST_OBJECT_FLAG_SET() and GST_OBJECT_FLAG_UNSET().
+ */
+typedef enum {
+  /**
+   * GST_BIN_FLAG_NO_RESYNC:
+   *
+   * Don't resync a state change when elements are added or linked in the bin
+   *
+   * Since: 1.0.5
+   */
+  GST_BIN_FLAG_NO_RESYNC	= (GST_ELEMENT_FLAG_LAST << 0),
+
+  /**
+   * GST_BIN_FLAG_STREAMS_AWARE:
+   *
+   * Indicates whether the bin can handle elements that add/remove source pads
+   * at any point in time without first posting a no-more-pads signal.
+   *
+   * Since: 1.10
+   */
+  GST_BIN_FLAG_STREAMS_AWARE	= (GST_ELEMENT_FLAG_LAST << 1),
+
+  /* padding */
+
+  /**
+   * GST_BIN_FLAG_LAST:
+   *
+   * The last enum in the series of flags for bins. Derived classes can use this
+   * as first value in a list of flags.
+   */
+  GST_BIN_FLAG_LAST		= (GST_ELEMENT_FLAG_LAST << 5)
+} GstBinFlags;
+
+/**
+ * GST_BIN_IS_NO_RESYNC:
+ * @bin: A #GstBin
+ *
+ * Check if @bin will resync its state change when elements are added and
+ * removed.
+ *
+ * Since: 1.0.5
+ */
+#define GST_BIN_IS_NO_RESYNC(bin)        (GST_OBJECT_FLAG_IS_SET(bin,GST_BIN_FLAG_NO_RESYNC))
+
+typedef struct _GstBin GstBin;
+typedef struct _GstBinClass GstBinClass;
+typedef struct _GstBinPrivate GstBinPrivate;
+
+/**
+ * GST_BIN_NUMCHILDREN:
+ * @bin: a #GstBin
+ *
+ * Gets the number of children in a bin.
+ */
+#define GST_BIN_NUMCHILDREN(bin)	(GST_BIN_CAST(bin)->numchildren)
+/**
+ * GST_BIN_CHILDREN:
+ * @bin: a #GstBin
+ *
+ * Gets the list of children in a bin.
+ */
+#define GST_BIN_CHILDREN(bin)		(GST_BIN_CAST(bin)->children)
+/**
+ * GST_BIN_CHILDREN_COOKIE:
+ * @bin: a #GstBin
+ *
+ * Gets the children cookie that watches the children list.
+ */
+#define GST_BIN_CHILDREN_COOKIE(bin)	(GST_BIN_CAST(bin)->children_cookie)
+
+/**
+ * GstBin:
+ * @numchildren: the number of children in this bin
+ * @children: (element-type Gst.Element): the list of children in this bin
+ * @children_cookie: updated whenever @children changes
+ * @child_bus: internal bus for handling child messages
+ * @messages: (element-type Gst.Message): queued and cached messages
+ * @polling: the bin is currently calculating its state
+ * @state_dirty: the bin needs to recalculate its state (deprecated)
+ * @clock_dirty: the bin needs to select a new clock
+ * @provided_clock: the last clock selected
+ * @clock_provider: the element that provided @provided_clock
+ *
+ * The GstBin base class. Subclasses can access these fields provided
+ * the LOCK is taken.
+ */
+struct _GstBin {
+  GstElement	 element;
+
+  /*< public >*/ /* with LOCK */
+  /* our children, subclass are supposed to update these
+   * fields to reflect their state with _iterate_*() */
+  gint		 numchildren;
+  GList		*children;
+  guint32	 children_cookie;
+
+  GstBus        *child_bus;
+  GList         *messages;
+
+  gboolean	 polling;
+  gboolean       state_dirty;
+
+  gboolean       clock_dirty;
+  GstClock	*provided_clock;
+  GstElement    *clock_provider;
+
+  /*< private >*/
+  GstBinPrivate *priv;
+
+  gpointer _gst_reserved[GST_PADDING];
+};
+
+/**
+ * GstBinClass:
+ * @parent_class: bin parent class
+ *
+ * Subclasses can override #GstBinClass::add_element and #GstBinClass::remove_element
+ * to update the list of children in the bin.
+ *
+ * The #GstBinClass::handle_message method can be overridden to implement custom
+ * message handling.
+ *
+ * #GstBinClass::deep_element_added will be called when a new element has been
+ * added to any bin inside this bin, so it will also be called if a new child
+ * was added to a sub-bin of this bin. #GstBin implementations that override
+ * this message should chain up to the parent class implementation so the
+ * #GstBin::deep-element-added signal is emitted on all parents.
+ */
+struct _GstBinClass {
+  GstElementClass parent_class;
+
+  /*< private >*/
+  GThreadPool  *pool; /* deprecated */
+
+  /* signals */
+
+  /**
+   * GstBinClass::element_added:
+   * @bin: the #GstBin
+   * @child: the element that was added
+   *
+   * Method called when an element was added to the bin.
+   */
+  void		(*element_added)	(GstBin *bin, GstElement *child);
+
+  /**
+   * GstBinClass::element_removed:
+   * @bin: the #GstBin
+   * @child: the element that was removed
+   *
+   * Method called when an element was removed from the bin.
+   */
+  void		(*element_removed)	(GstBin *bin, GstElement *child);
+
+  /*< public >*/
+  /* virtual methods for subclasses */
+
+  /**
+   * GstBinClass::add_element:
+   * @bin: the #GstBin
+   * @element: the element to be added
+   *
+   * Method to add an element to the bin.
+   *
+   * Returns: %TRUE if the @element was added
+   */
+  gboolean	(*add_element)		(GstBin *bin, GstElement *element);
+
+  /**
+   * GstBinClass::remove_element:
+   * @bin: the #GstBin
+   * @element: the element to be removed
+   *
+   * Method to remove an element from the bin.
+   *
+   * Returns: %TRUE if the @element was removed
+   */
+  gboolean	(*remove_element)	(GstBin *bin, GstElement *element);
+
+  /**
+   * GstBinClass::handle_message:
+   * @bin: the #GstBin
+   * @message: (transfer full): the message to be handled
+   *
+   * Method to handle a message from the children.
+   */
+  void		(*handle_message)	(GstBin *bin, GstMessage *message);
+
+  /*< private >*/
+  /* signal */
+  gboolean	(*do_latency)           (GstBin *bin);
+
+  /*< public >*/
+  /* signal */
+
+  /**
+   * GstBinClass::deep_element_added:
+   * @bin: the top level #GstBin
+   * @sub_bin: the #GstBin to which the element was added
+   * @child: the element that was added
+   *
+   * Method called when an element was added somewhere in the bin hierarchy.
+   */
+  void          (*deep_element_added)   (GstBin *bin, GstBin *sub_bin, GstElement *child);
+
+  /**
+   * GstBinClass::deep_element_removed:
+   * @bin: the top level #GstBin
+   * @sub_bin: the #GstBin from which the element was removed
+   * @child: the element that was removed
+   *
+   * Method called when an element was removed somewhere in the bin hierarchy.
+   */
+  void          (*deep_element_removed) (GstBin *bin, GstBin *sub_bin, GstElement *child);
+
+  /*< private >*/
+  gpointer _gst_reserved[GST_PADDING-2];
+};
+
+GST_API
+GType		gst_bin_get_type		(void);
+
+GST_API
+GstElement*	gst_bin_new			(const gchar *name);
+
+/* add and remove elements from the bin */
+
+GST_API
+gboolean	gst_bin_add			(GstBin *bin, GstElement *element);
+
+GST_API
+gboolean	gst_bin_remove			(GstBin *bin, GstElement *element);
+
+/* retrieve a single child */
+
+GST_API
+GstElement*	gst_bin_get_by_name		 (GstBin *bin, const gchar *name);
+
+GST_API
+GstElement*	gst_bin_get_by_name_recurse_up	 (GstBin *bin, const gchar *name);
+
+GST_API
+GstElement*	gst_bin_get_by_interface	 (GstBin *bin, GType iface);
+
+/* retrieve multiple children */
+
+GST_API
+GstIterator*    gst_bin_iterate_elements	 (GstBin *bin);
+
+GST_API
+GstIterator*    gst_bin_iterate_sorted		 (GstBin *bin);
+
+GST_API
+GstIterator*    gst_bin_iterate_recurse		 (GstBin *bin);
+
+GST_API
+GstIterator*	gst_bin_iterate_sinks		 (GstBin *bin);
+
+GST_API
+GstIterator*	gst_bin_iterate_sources		 (GstBin *bin);
+
+GST_API
+GstIterator*	gst_bin_iterate_all_by_interface (GstBin *bin, GType iface);
+
+GST_API
+GstIterator*	gst_bin_iterate_all_by_element_factory_name (GstBin * bin, const gchar * factory_name);
+
+/* latency */
+
+GST_API
+gboolean        gst_bin_recalculate_latency      (GstBin * bin);
+
+/* set and get suppressed flags */
+
+GST_API
+void            gst_bin_set_suppressed_flags (GstBin * bin, GstElementFlags flags);
+
+GST_API
+GstElementFlags gst_bin_get_suppressed_flags (GstBin * bin);
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstBin, gst_object_unref)
+
+G_END_DECLS
+
+
+#endif /* __GST_BIN_H__ */