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ac3enc: Remove unneeded clipping of shift amount.

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s->windowed_samples will always have a range of [-32767,32767] due to the
window function, so the return value from log2_tab() will always be in the
range [0,14].

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 626264b11b5406c0c78c4056cabb63cb650e9bf2)
This commit is contained in:
Justin Ruggles 2011-02-10 22:12:16 +00:00 committed by Michael Niedermayer
parent 95234e051b
commit 943dc94265
1 changed files with 0 additions and 1 deletions
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libavcodec/ac3enc_fixed.c
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@ -309,7 +309,6 @@ static void lshift_tab(int16_t *tab, int n, unsigned int lshift)
static int normalize_samples(AC3EncodeContext *s) static int normalize_samples(AC3EncodeContext *s)
{ {
int v = 14 - log2_tab(s->windowed_samples, AC3_WINDOW_SIZE); int v = 14 - log2_tab(s->windowed_samples, AC3_WINDOW_SIZE);
v = FFMAX(0, v);
lshift_tab(s->windowed_samples, AC3_WINDOW_SIZE, v); lshift_tab(s->windowed_samples, AC3_WINDOW_SIZE, v);
return v - 9; return v - 9;
} }