From d3bb8ad7afcfa82ed02fba1cd20b933cc45454d6 Mon Sep 17 00:00:00 2001
From: Vladimir Voroshilov <voroshil@gmail.com>
Date: Tue, 2 Sep 2008 17:15:28 +0000
Subject: [PATCH] Parity bit calculation routine for G.729
Originally committed as revision 15154 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/g729dec.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libavcodec/g729dec.c b/libavcodec/g729dec.c
index f17524aa5c2..b2761e4df01 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",
--
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