ffmpeg

Commit Graph

Author	SHA1	Message	Date
Lynne	ace42cf581	x86/tx_float: add 15xN PFA FFT AVX SIMD ~4x faster than the C version. The shuffles in the 15pt dim1 are seriously expensive. Not happy with it, but I'm contempt. Can be easily converted to pure AVX by removing all vpermpd/vpermps instructions.	2022-09-23 12:35:27 +02:00
Lynne	68dfb87035	doc/transforms: add documentation for the FFT transforms Makes the code far easier to follow, and makes creating new SIMD for the transforms far, far easier.	2021-04-24 17:19:17 +02:00

Author

SHA1

Message

Date

Lynne

ace42cf581

x86/tx_float: add 15xN PFA FFT AVX SIMD

~4x faster than the C version.
The shuffles in the 15pt dim1 are seriously expensive. Not happy with it,
but I'm contempt.

Can be easily converted to pure AVX by removing all vpermpd/vpermps
instructions.

2022-09-23 12:35:27 +02:00

Lynne

68dfb87035

doc/transforms: add documentation for the FFT transforms

Makes the code far easier to follow, and makes creating new SIMD
for the transforms far, far easier.

2021-04-24 17:19:17 +02:00

2 Commits