From 381ea8e4b4c15ef916a692160b50c3491699fe98 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
Date: Mon, 22 Jul 2013 11:14:02 +0200
Subject: Update histogram when moving frame slider

---
 bin/common/ring-buffer.c | 8 ++++++++
 bin/common/ring-buffer.h | 2 ++
 2 files changed, 10 insertions(+)

(limited to 'bin/common')

diff --git a/bin/common/ring-buffer.c b/bin/common/ring-buffer.c
index 039024f..850dfc0 100644
--- a/bin/common/ring-buffer.c
+++ b/bin/common/ring-buffer.c
@@ -44,6 +44,14 @@ ring_buffer_get_current_pointer (RingBuffer *buffer)
     return buffer->data + (buffer->current_index % buffer->n_blocks_total) * buffer->block_size;
 }
 
+void
+ring_buffer_set_current_pointer (RingBuffer *buffer,
+                                 guint index)
+{
+    g_assert (index < buffer->n_blocks_total);
+    buffer->current_index = index;
+}
+
 gpointer
 ring_buffer_get_pointer (RingBuffer *buffer,
                          guint       index)
diff --git a/bin/common/ring-buffer.h b/bin/common/ring-buffer.h
index a3758cb..fafe5ec 100644
--- a/bin/common/ring-buffer.h
+++ b/bin/common/ring-buffer.h
@@ -19,6 +19,8 @@ void         ring_buffer_free                 (RingBuffer *buffer);
 void         ring_buffer_reset                (RingBuffer *buffer);
 gsize        ring_buffer_get_block_size       (RingBuffer *buffer);
 gpointer     ring_buffer_get_current_pointer  (RingBuffer *buffer);
+void         ring_buffer_set_current_pointer  (RingBuffer *buffer,
+                                               guint       index);
 gpointer     ring_buffer_get_pointer          (RingBuffer *buffer,
                                                guint       index);
 guint        ring_buffer_get_num_blocks       (RingBuffer *buffer);
-- 
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