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2 Commits

Author SHA1 Message Date
James Almer
c8c4a162fc avcodec/lpc: use ptrdiff_t for length parameters
Signed-off-by: James Almer <jamrial@gmail.com>
2022-09-22 18:17:26 -03:00
Lynne
3ade6a8644
x86/lpc: implement a new Welch windowing function
Old one was written with the assumption only even inputs would be given.
This very messy replacement supports even and odd inputs, and supports
AVX2 for extra speed. The buffers given are usually quite big (4k samples),
so the speedup is worth it.
The new SSE version is still faster than the old inline asm version by 33%.

Also checkasm is provided to make sure this monstrosity works.

This fixes some FATE tests.
2022-09-21 07:12:39 +02:00