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| author | Mans Rullgard <mans@mansr.com> | 2012-08-10 00:13:46 +0100 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2012-08-10 12:18:38 +0100 |
| commit | e141cf2c5794cd9884f2806b7766a1e0bb47ebe5 (patch) | |
| tree | f4df7ba2e63c95e3e825fee8bf98343ec8695fd9 /libavcodec | |
| parent | e2b7c5783d34fa36a265c1e475de71ba3dd49a19 (diff) | |
| download | ffmpeg-e141cf2c5794cd9884f2806b7766a1e0bb47ebe5.tar.gz | |
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 <mans@mansr.com>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/g723_1.c | 3 |
1 files changed, 1 insertions, 2 deletions
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 */ |