From 1fc28cf1644e813f57dcdcf687e77dc3167b9823 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 27 Apr 2014 23:12:42 +0200
Subject: [PATCH] avcodec/g729postfilter: avoid potential negative shift
Fixes CID1194402
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/g729postfilter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/g729postfilter.c b/libavcodec/g729postfilter.c
index fc903740edd..bcf509cfcc6 100644
--- a/libavcodec/g729postfilter.c
+++ b/libavcodec/g729postfilter.c
@@ -389,7 +389,7 @@ static int16_t long_term_filter(DSPContext *dsp, int pitch_delay_int,
lt_filt_factor_a = (gain_den << 15) / (gain_den + gain_num);
}
#else
- L64_temp0 = ((int64_t)gain_num) << (sh_gain_num - 1);
+ L64_temp0 = (((int64_t)gain_num) << sh_gain_num) >> 1;
L64_temp1 = ((int64_t)gain_den) << sh_gain_den;
lt_filt_factor_a = FFMAX((L64_temp1 << 15) / (L64_temp1 + L64_temp0), MIN_LT_FILT_FACTOR_A);
#endif
--
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