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ac3enc: simplify sym_quant()

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These expressions are equivalent since levels is always odd, and
overflow is impossible due to the constraints set by the assert().

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard
2011-03-31 01:28:08 +01:00
parent cb7e2c1ca8
commit 7f6e05cdfd
1 changed files with 1 additions and 1 deletions
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libavcodec/ac3enc.c
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@@ -1192,7 +1192,7 @@ static int compute_bit_allocation(AC3EncodeContext *s)
*/ */
static inline int sym_quant(int c, int e, int levels) static inline int sym_quant(int c, int e, int levels)
{ {
int v = ((((levels * c) >> (24 - e)) + 1) >> 1) + (levels >> 1); int v = (((levels * c) >> (24 - e)) + levels) >> 1;
av_assert2(v >= 0 && v < levels); av_assert2(v >= 0 && v < levels);
return v; return v;
} }