From: Mans Rullgard Date: Thu, 9 Aug 2012 23:13:46 +0000 (+0100) Subject: g723.1: deobfuscate an expression X-Git-Tag: n1.0~12^2~472 X-Git-Url: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff_plain;h=e141cf2c5794cd9884f2806b7766a1e0bb47ebe5;hp=e2b7c5783d34fa36a265c1e475de71ba3dd49a19 g723.1: deobfuscate an expression (x << 2) - x is just an optimisation of 3 * x the compiler is perfectly capable of doing on its own. Signed-off-by: Mans Rullgard --- diff --git a/libavcodec/g723_1.c b/libavcodec/g723_1.c index bf753ab182..c337deb881 100644 --- a/libavcodec/g723_1.c +++ b/libavcodec/g723_1.c @@ -974,8 +974,7 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf) if (temp) { temp = (auto_corr[0] >> 2) / temp; } - p->reflection_coef = ((p->reflection_coef << 2) - p->reflection_coef + - temp + 2) >> 2; + p->reflection_coef = (3 * p->reflection_coef + temp + 2) >> 2; temp = (p->reflection_coef * 0xffffc >> 3) & 0xfffc; /* Compensation filter */