From 633ddb85192f1cc39d61fae98455eb6ae5638df0 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Sun, 9 Oct 2011 23:15:17 +0100 Subject: [PATCH] ac3dec: use get_sbits() instead of manually sign-extending Signed-off-by: Mans Rullgard --- libavcodec/ac3dec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c index 5046a5c644..956a7ac3ad 100644 --- a/libavcodec/ac3dec.c +++ b/libavcodec/ac3dec.c @@ -505,9 +505,9 @@ static void ac3_decode_transform_coeffs_ch(AC3DecodeContext *s, int ch_index, ma mantissa = b5_mantissas[get_bits(gbc, 4)]; break; default: /* 6 to 15 */ - mantissa = get_bits(gbc, quantization_tab[bap]); /* Shift mantissa and sign-extend it. */ - mantissa = (mantissa << (32-quantization_tab[bap]))>>8; + mantissa = get_sbits(gbc, quantization_tab[bap]); + mantissa <<= 24 - quantization_tab[bap]; break; } coeffs[freq] = mantissa >> exps[freq];