From 6f2c05f3079dad4eec12dcc33cb46e1e37111192 Mon Sep 17 00:00:00 2001
From: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Date: Tue, 27 Jul 2010 17:11:13 +0000
Subject: Document how the ref_buf is used.

Originally committed as revision 24551 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/gsmdec.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'libavcodec/gsmdec.c')

diff --git a/libavcodec/gsmdec.c b/libavcodec/gsmdec.c
index 3759f35d21..a9d9c345e8 100644
--- a/libavcodec/gsmdec.c
+++ b/libavcodec/gsmdec.c
@@ -34,6 +34,10 @@
 #define GSM_FRAME_SIZE   160
 
 typedef struct {
+    // Contains first 120 elements from the previous frame
+    // (used by long_term_synth according to the "lag"),
+    // then in the following 160 elements the current
+    // frame is constructed.
     int16_t ref_buf[280];
     int v[9];
     int lar[2][8];
-- 
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