diff -r 71e347f905f2 -r 4a7fac7dd34a gst_plugins_base/gst-libs/gst/audio/gstringbuffer.h
--- a/gst_plugins_base/gst-libs/gst/audio/gstringbuffer.h	Fri Mar 19 09:35:09 2010 +0200
+++ b/gst_plugins_base/gst-libs/gst/audio/gstringbuffer.h	Fri Apr 16 15:15:52 2010 +0300
@@ -181,6 +181,8 @@
  * @segtotal: the total number of segments
  * @bytes_per_sample: number of bytes in one sample
  * @silence_sample: bytes representing one sample of silence
+ * @seglatency: number of segments queued in the lower level device,
+ *  defaults to segtotal
  *
  * The structure containing the format specification of the ringbuffer.
  */
@@ -200,17 +202,30 @@
   gint      rate;
   gint      channels;
   
-  guint64  latency_time;        /* the required/actual latency time */
-  guint64  buffer_time;         /* the required/actual time of the buffer */
-  gint     segsize;             /* size of one buffer segment in bytes */
-  gint     segtotal;            /* total number of segments */
-
+  guint64  latency_time;        /* the required/actual latency time, this is the
+				 * actual the size of one segment and the
+				 * minimum possible latency we can achieve. */
+  guint64  buffer_time;         /* the required/actual time of the buffer, this is
+				 * the total size of the buffer and maximum
+				 * latency we can compensate for. */
+  gint     segsize;             /* size of one buffer segment in bytes, this value
+				 * should be chosen to match latency_time as
+				 * well as possible. */
+  gint     segtotal;            /* total number of segments, this value is the
+				 * number of segments of @segsize and should be
+				 * chosen so that it matches buffer_time as
+				 * close as possible. */
   /* out */
   gint     bytes_per_sample;    /* number of bytes of one sample */
   guint8   silence_sample[32];  /* bytes representing silence */
 
+  /* ABI added 0.10.20 */
+  gint     seglatency;          /* number of segments queued in the lower
+				 * level device, defaults to segtotal. */
+
   /*< private >*/
-  gpointer _gst_reserved[GST_PADDING];
+  /* gpointer _gst_reserved[GST_PADDING]; */
+  guint8 _gst_reserved[(sizeof (gpointer) * GST_PADDING) - sizeof (gint)];
 };
 
 #define GST_RING_BUFFER_GET_COND(buf) (((GstRingBuffer *)buf)->cond)
@@ -264,6 +279,7 @@
       gboolean           flushing;
       /* ATOMIC */
       gint               may_start;
+      gboolean           active;
     } ABI;
     /* adding + 0 to mark ABI change to be undone later */
     gpointer _gst_reserved[GST_PADDING + 0];
@@ -272,6 +288,7 @@
 
 /**
  * GstRingBufferClass:
+ * @parent_class: parent class
  * @open_device:  open the device, don't set any params or allocate anything
  * @acquire: allocate the resources for the ringbuffer using the given spec
  * @release: free resources of the ringbuffer
@@ -281,6 +298,10 @@
  * @resume: resume processing of samples after pause
  * @stop: stop processing of samples
  * @delay: get number of samples queued in device
+ * @activate: activate the thread that starts pulling and monitoring the
+ * consumed segments in the device. Since 0.10.22
+ * @commit: write samples into the ringbuffer
+ * @clear_all: clear the entire ringbuffer Since 0.10.24
  *
  * The vmethods that subclasses can override to implement the ringbuffer.
  */
@@ -300,8 +321,17 @@
 
   guint        (*delay)        (GstRingBuffer *buf);
 
+  /* ABI added */
+  gboolean     (*activate)     (GstRingBuffer *buf, gboolean active);
+
+  guint        (*commit)       (GstRingBuffer * buf, guint64 *sample,
+                                guchar * data, gint in_samples, 
+                                gint out_samples, gint * accum);
+
+  void         (*clear_all)    (GstRingBuffer * buf);
+
   /*< private >*/
-  gpointer _gst_reserved[GST_PADDING];
+  gpointer _gst_reserved[GST_PADDING - 3];
 };
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -333,6 +363,14 @@
 #endif
 
 void            gst_ring_buffer_debug_spec_buff (GstRingBufferSpec *spec);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+gboolean        gst_ring_buffer_convert         (GstRingBuffer * buf, GstFormat src_fmt,
+                                                 gint64 src_val, GstFormat dest_fmt,
+						 gint64 * dest_val);
 
 /* device state */
 #ifdef __SYMBIAN32__
@@ -370,6 +408,18 @@
 
 gboolean        gst_ring_buffer_is_acquired     (GstRingBuffer *buf);
 
+/* activating */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean        gst_ring_buffer_activate        (GstRingBuffer *buf, gboolean active);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean        gst_ring_buffer_is_active       (GstRingBuffer *buf);
+
 /* flushing */
 #ifdef __SYMBIAN32__
 IMPORT_C