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audioconvert: add simple and faster resampler

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Add a sinc based resampler that, unlike speex, avoids memcpy and
works directly on the source data. It also allows for ssse3
optimizations and aligned loads. It will later switch to table
interpolation when doing variable rate.
This commit is contained in:
Wim Taymans 2019-03-26 12:58:26 +01:00
parent f29d14fcc8
commit 9c8913437b
10 changed files with 720 additions and 7 deletions
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3
spa/include/spa/utils/defs.h
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@ -171,7 +171,8 @@ struct spa_param_info {
#define SPA_ROUND_DOWN_N(num,align) ((num) & ~((align) - 1))
#define SPA_ROUND_UP_N(num,align) SPA_ROUND_DOWN_N((num) + ((align) - 1),align)
#define SPA_IS_ALIGNED(p,align) (((intptr_t)(p) & ((align)-1)) == 0)
#define SPA_PTR_ALIGNMENT(p,align) ((intptr_t)(p) & ((align)-1))
#define SPA_IS_ALIGNED(p,align) (SPA_PTR_ALIGNMENT(p,align) == 0)
#define SPA_PTR_ALIGN(p,align,type) (type*)SPA_ROUND_UP_N((intptr_t)(p), (intptr_t)(align))
#ifndef SPA_LIKELY