From 5ac2327f0555a7611c571b31bfd4050555e78e7b Mon Sep 17 00:00:00 2001
From: Wim Taymans <wim.taymans@gmail.com>
Date: Wed, 24 Aug 2005 11:29:10 +0000
Subject: [PATCH] gst-libs/gst/audio/gstringbuffer.*: Added function to clear
 the ringbuffer.

Original commit message from CVS:
* gst-libs/gst/audio/gstringbuffer.c: (gst_ring_buffer_set_sample),
(gst_ring_buffer_clear_all):
* gst-libs/gst/audio/gstringbuffer.h:
Added function to clear the ringbuffer.
---
 ChangeLog                          |  7 +++++++
 gst-libs/gst/audio/gstringbuffer.c | 28 +++++++++++++++++++++++-----
 gst-libs/gst/audio/gstringbuffer.h |  3 +++
 3 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a597f6bffc..b83fe6be53 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2005-08-24  Wim Taymans  <wim@fluendo.com>
+
+	* gst-libs/gst/audio/gstringbuffer.c: (gst_ring_buffer_set_sample),
+	(gst_ring_buffer_clear_all):
+	* gst-libs/gst/audio/gstringbuffer.h:
+	Added function to clear the ringbuffer.
+
 2005-08-24  Andy Wingo  <wingo@pobox.com>
 
 	* sys/v4l/gstv4lelement.c (gst_v4lelement_start) 
diff --git a/gst-libs/gst/audio/gstringbuffer.c b/gst-libs/gst/audio/gstringbuffer.c
index 765d07ba19..d569475b9b 100644
--- a/gst-libs/gst/audio/gstringbuffer.c
+++ b/gst-libs/gst/audio/gstringbuffer.c
@@ -822,8 +822,6 @@ gst_ring_buffer_samples_done (GstRingBuffer * buf)
 void
 gst_ring_buffer_set_sample (GstRingBuffer * buf, guint64 sample)
 {
-  gint i;
-
   g_return_if_fail (buf != NULL);
 
   if (sample == -1)
@@ -838,13 +836,33 @@ gst_ring_buffer_set_sample (GstRingBuffer * buf, guint64 sample)
   buf->segbase = buf->segdone - sample / buf->samples_per_seg;
   buf->next_sample = sample;
 
-  for (i = 0; i < buf->spec.segtotal; i++) {
-    gst_ring_buffer_clear (buf, i);
-  }
+  gst_ring_buffer_clear_all (buf);
 
   GST_DEBUG ("set sample to %llu, segbase %d", sample, buf->segbase);
 }
 
+/**
+ * gst_ring_buffer_clear_all:
+ * @buf: the #GstRingBuffer to clear
+ *
+ * Fill the ringbuffer with silence.
+ *
+ * MT safe.
+ */
+void
+gst_ring_buffer_clear_all (GstRingBuffer * buf)
+{
+  gint i;
+
+  g_return_if_fail (buf != NULL);
+  g_return_if_fail (buf->spec.segtotal > 0);
+
+  for (i = 0; i < buf->spec.segtotal; i++) {
+    gst_ring_buffer_clear (buf, i);
+  }
+}
+
+
 static gboolean
 wait_segment (GstRingBuffer * buf)
 {
diff --git a/gst-libs/gst/audio/gstringbuffer.h b/gst-libs/gst/audio/gstringbuffer.h
index bd57c8f971..13058d4ac3 100644
--- a/gst-libs/gst/audio/gstringbuffer.h
+++ b/gst-libs/gst/audio/gstringbuffer.h
@@ -236,6 +236,9 @@ guint64	 	gst_ring_buffer_samples_done	(GstRingBuffer *buf);
 
 void	 	gst_ring_buffer_set_sample	(GstRingBuffer *buf, guint64 sample);
 
+/* clear all segments */
+void		gst_ring_buffer_clear_all	(GstRingBuffer *buf);
+
 /* commit samples */
 guint 		gst_ring_buffer_commit 		(GstRingBuffer *buf, guint64 sample, 
 						 guchar *data, guint len);