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PcmDither: use constexpr

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This commit is contained in:
Max Kellermann 2013-01-31 22:55:00 +01:00
parent f2491c88c8
commit eab78ab99c
1 changed files with 8 additions and 10 deletions
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18
src/PcmDither.cxx
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@ -24,16 +24,14 @@
inline int16_t
PcmDither::Dither24To16(int_fast32_t sample)
{
enum {
from_bits = 24,
to_bits = 16,
scale_bits = from_bits - to_bits,
round = 1 << (scale_bits - 1),
mask = (1 << scale_bits) - 1,
ONE = 1 << (from_bits - 1),
MIN = -ONE,
MAX = ONE - 1
};
constexpr unsigned from_bits = 24;
constexpr unsigned to_bits = 16;
constexpr unsigned scale_bits = from_bits - to_bits;
constexpr int_fast32_t round = 1 << (scale_bits - 1);
constexpr int_fast32_t mask = (1 << scale_bits) - 1;
constexpr int_fast32_t ONE = 1 << (from_bits - 1);
constexpr int_fast32_t MIN = -ONE;
constexpr int_fast32_t MAX = ONE - 1;
sample += error[0] - error[1] + error[2];