From 0e921e97c10f37c5ba2bc90cfb00248b633ed21a Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 23 Dec 2008 21:05:47 +0000
Subject: [PATCH] Add get_ue_golomb_31()

Originally committed as revision 16298 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/golomb.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/libavcodec/golomb.h b/libavcodec/golomb.h
index 627fcdc40f..3c3f75987d 100644
--- a/libavcodec/golomb.h
+++ b/libavcodec/golomb.h
@@ -74,6 +74,23 @@ static inline int get_ue_golomb(GetBitContext *gb){
     }
 }
 
+ /**
+ * read unsigned exp golomb code, constraint to a max of 31
+ */
+static inline int get_ue_golomb_31(GetBitContext *gb){
+    unsigned int buf;
+
+    OPEN_READER(re, gb);
+    UPDATE_CACHE(re, gb);
+    buf=GET_CACHE(re, gb);
+
+    buf >>= 32 - 9;
+    LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
+    CLOSE_READER(re, gb);
+
+    return ff_ue_golomb_vlc_code[buf];
+}
+
 static inline int svq3_get_ue_golomb(GetBitContext *gb){
     uint32_t buf;