From d3bb8ad7afcfa82ed02fba1cd20b933cc45454d6 Mon Sep 17 00:00:00 2001 From: Vladimir Voroshilov 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 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", -- 2.7.4