From 37216b99e090a88d98be57a8aab14a8316b96a71 Mon Sep 17 00:00:00 2001
From: Alex Converse <alex.converse@gmail.com>
Date: Thu, 8 Apr 2010 06:04:37 +0000
Subject: [PATCH] Use get_bits_left() in the sync extension check.

Originally committed as revision 22817 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/mpeg4audio.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/mpeg4audio.c b/libavcodec/mpeg4audio.c
index 1c78f84d31..7b5333d1c6 100644
--- a/libavcodec/mpeg4audio.c
+++ b/libavcodec/mpeg4audio.c
@@ -115,8 +115,7 @@ int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_si
     }
 
     if (c->ext_object_type != AOT_SBR) {
-        int bits_left = buf_size*8 - get_bits_count(&gb);
-        for (; bits_left > 15; bits_left--) {
+        while (get_bits_left(&gb) > 15) {
             if (show_bits(&gb, 11) == 0x2b7) { // sync extension
                 get_bits(&gb, 11);
                 c->ext_object_type = get_object_type(&gb);