From: Vladimir Voroshilov <voroshil@gmail.com>
Date: Tue, 2 Sep 2008 17:15:28 +0000 (+0000)
Subject: Parity bit calculation routine for G.729
X-Git-Tag: v0.5~2741
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3bb8ad7afcfa82ed02fba1cd20b933cc45454d6;p=platform%2Fupstream%2Flibav.git

Parity bit calculation routine for G.729

Originally committed as revision 15154 to svn://svn.ffmpeg.org/ffmpeg/trunk
---

diff --git a/libavcodec/g729dec.c b/libavcodec/g729dec.c
index f17524a..b2761e4 100644
--- a/libavcodec/g729dec.c
+++ b/libavcodec/g729dec.c
@@ -71,6 +71,14 @@ static inline uint16_t g729_random(uint16_t value)
     return 31821 * value + 13849;
 }
 
+/**
+ * Get parity bit of bit 2..7
+ */
+static inline int g729_get_parity(uint8_t value)
+{
+   return (0x6996966996696996ULL >> (value >> 2)) & 1;
+}
+
 AVCodec g729_decoder =
 {
     "g729",