diff -r 000000000000 -r 0e761a78d257 gst_plugins_base/gst-libs/gst/audio/gstaudioclock.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst-libs/gst/audio/gstaudioclock.h	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,98 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2005 Wim Taymans <wim@fluendo.com>
+ *
+ * gstaudioclock.h: Clock for use by audio plugins
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_AUDIO_CLOCK_H__
+#define __GST_AUDIO_CLOCK_H__
+
+#include <gst/gstsystemclock.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUDIO_CLOCK \
+  (gst_audio_clock_get_type())
+#define GST_AUDIO_CLOCK(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_CLOCK,GstAudioClock))
+#define GST_AUDIO_CLOCK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_CLOCK,GstAudioClockClass))
+#define GST_IS_AUDIO_CLOCK(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_CLOCK))
+#define GST_IS_AUDIO_CLOCK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_CLOCK))
+
+typedef struct _GstAudioClock GstAudioClock;
+typedef struct _GstAudioClockClass GstAudioClockClass;
+
+/**
+ * GstAudioClockGetTimeFunc:
+ * @clock: the #GstAudioClock
+ * @user_data: user data
+ *
+ * This function will be called whenever the current clock time needs to be
+ * calculated. If this function returns #GST_CLOCK_TIME_NONE, the last reported
+ * time will be returned by the clock.
+ *
+ * Returns: the current time or #GST_CLOCK_TIME_NONE if the previous time should
+ * be used.
+ */
+typedef GstClockTime (*GstAudioClockGetTimeFunc) (GstClock *clock, gpointer user_data);
+
+/**
+ * GstAudioClock:
+ * @clock: parent #GstSystemClock
+ *
+ * Opaque #GstAudioClock.
+ */
+struct _GstAudioClock {
+  GstSystemClock clock;
+
+  /* --- protected --- */
+  GstAudioClockGetTimeFunc func;
+  gpointer user_data;
+
+  GstClockTime last_time;
+
+  /*< private >*/
+  gpointer _gst_reserved[GST_PADDING];
+};
+
+struct _GstAudioClockClass {
+  GstSystemClockClass parent_class;
+
+  /*< private >*/
+  gpointer _gst_reserved[GST_PADDING];
+};
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+GType           gst_audio_clock_get_type        (void);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstClock*       gst_audio_clock_new             (gchar *name, GstAudioClockGetTimeFunc func,
+                                                 gpointer user_data);
+
+G_END_DECLS
+
+#endif /* __GST_AUDIO_CLOCK_H__ */