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Runtime hw_info constraints support. New hw_info with lengths

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This commit is contained in:
Abramo Bagnara 2000-12-07 15:58:03 +00:00
parent b6134d77c1
commit 714ac32b5e
7 changed files with 190 additions and 271 deletions
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25
src/pcm/pcm_local.h
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@ -276,3 +276,28 @@ static inline ssize_t _snd_pcm_readn(snd_pcm_t *pcm, void **bufs, size_t size)
return pcm->fast_ops->readn(pcm->fast_op_arg, bufs, size);
}
static inline ssize_t muldiv(ssize_t a, ssize_t b, ssize_t d, ssize_t corr)
{
double v = ((double) a * b + corr) / d;
if (v > LONG_MAX)
return LONG_MAX;
if (v < LONG_MIN)
return LONG_MIN;
return v;
}
static inline ssize_t muldiv_down(ssize_t a, ssize_t b, ssize_t d)
{
return muldiv(a, b, d, 0);
}
static inline ssize_t muldiv_up(ssize_t a, ssize_t b, ssize_t d)
{
return muldiv(a, b, d, d - 1);
}
static inline ssize_t muldiv_near(ssize_t a, ssize_t b, ssize_t d)
{
return muldiv(a, b, d, d / 2);
}