mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
5379412ed0
checkasm benchmarks on 1.5 GHz Cortex-A72 are as follows. idctdsp.add_pixels_clamped_c: 313.3 idctdsp.add_pixels_clamped_neon: 24.3 idctdsp.put_pixels_clamped_c: 220.3 idctdsp.put_pixels_clamped_neon: 15.5 idctdsp.put_signed_pixels_clamped_c: 210.5 idctdsp.put_signed_pixels_clamped_neon: 19.5 Signed-off-by: Ben Avison <bavison@riscosopen.org> Signed-off-by: Martin Storsjö <martin@martin.st>
131 lines
5.0 KiB
ArmAsm
131 lines
5.0 KiB
ArmAsm
/*
|
|
* IDCT AArch64 NEON optimisations
|
|
*
|
|
* Copyright (c) 2022 Ben Avison <bavison@riscosopen.org>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/aarch64/asm.S"
|
|
|
|
// Clamp 16-bit signed block coefficients to unsigned 8-bit
|
|
// On entry:
|
|
// x0 -> array of 64x 16-bit coefficients
|
|
// x1 -> 8-bit results
|
|
// x2 = row stride for results, bytes
|
|
function ff_put_pixels_clamped_neon, export=1
|
|
ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], #64
|
|
ld1 {v4.16b, v5.16b, v6.16b, v7.16b}, [x0]
|
|
sqxtun v0.8b, v0.8h
|
|
sqxtun v1.8b, v1.8h
|
|
sqxtun v2.8b, v2.8h
|
|
sqxtun v3.8b, v3.8h
|
|
sqxtun v4.8b, v4.8h
|
|
st1 {v0.8b}, [x1], x2
|
|
sqxtun v0.8b, v5.8h
|
|
st1 {v1.8b}, [x1], x2
|
|
sqxtun v1.8b, v6.8h
|
|
st1 {v2.8b}, [x1], x2
|
|
sqxtun v2.8b, v7.8h
|
|
st1 {v3.8b}, [x1], x2
|
|
st1 {v4.8b}, [x1], x2
|
|
st1 {v0.8b}, [x1], x2
|
|
st1 {v1.8b}, [x1], x2
|
|
st1 {v2.8b}, [x1]
|
|
ret
|
|
endfunc
|
|
|
|
// Clamp 16-bit signed block coefficients to signed 8-bit (biased by 128)
|
|
// On entry:
|
|
// x0 -> array of 64x 16-bit coefficients
|
|
// x1 -> 8-bit results
|
|
// x2 = row stride for results, bytes
|
|
function ff_put_signed_pixels_clamped_neon, export=1
|
|
ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], #64
|
|
movi v4.8b, #128
|
|
ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x0]
|
|
sqxtn v0.8b, v0.8h
|
|
sqxtn v1.8b, v1.8h
|
|
sqxtn v2.8b, v2.8h
|
|
sqxtn v3.8b, v3.8h
|
|
sqxtn v5.8b, v16.8h
|
|
add v0.8b, v0.8b, v4.8b
|
|
sqxtn v6.8b, v17.8h
|
|
add v1.8b, v1.8b, v4.8b
|
|
sqxtn v7.8b, v18.8h
|
|
add v2.8b, v2.8b, v4.8b
|
|
sqxtn v16.8b, v19.8h
|
|
add v3.8b, v3.8b, v4.8b
|
|
st1 {v0.8b}, [x1], x2
|
|
add v0.8b, v5.8b, v4.8b
|
|
st1 {v1.8b}, [x1], x2
|
|
add v1.8b, v6.8b, v4.8b
|
|
st1 {v2.8b}, [x1], x2
|
|
add v2.8b, v7.8b, v4.8b
|
|
st1 {v3.8b}, [x1], x2
|
|
add v3.8b, v16.8b, v4.8b
|
|
st1 {v0.8b}, [x1], x2
|
|
st1 {v1.8b}, [x1], x2
|
|
st1 {v2.8b}, [x1], x2
|
|
st1 {v3.8b}, [x1]
|
|
ret
|
|
endfunc
|
|
|
|
// Add 16-bit signed block coefficients to unsigned 8-bit
|
|
// On entry:
|
|
// x0 -> array of 64x 16-bit coefficients
|
|
// x1 -> 8-bit input and results
|
|
// x2 = row stride for 8-bit input and results, bytes
|
|
function ff_add_pixels_clamped_neon, export=1
|
|
ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], #64
|
|
mov x3, x1
|
|
ld1 {v4.8b}, [x1], x2
|
|
ld1 {v5.8b}, [x1], x2
|
|
ld1 {v6.8b}, [x1], x2
|
|
ld1 {v7.8b}, [x1], x2
|
|
ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x0]
|
|
uaddw v0.8h, v0.8h, v4.8b
|
|
uaddw v1.8h, v1.8h, v5.8b
|
|
uaddw v2.8h, v2.8h, v6.8b
|
|
ld1 {v4.8b}, [x1], x2
|
|
uaddw v3.8h, v3.8h, v7.8b
|
|
ld1 {v5.8b}, [x1], x2
|
|
sqxtun v0.8b, v0.8h
|
|
ld1 {v6.8b}, [x1], x2
|
|
sqxtun v1.8b, v1.8h
|
|
ld1 {v7.8b}, [x1]
|
|
sqxtun v2.8b, v2.8h
|
|
sqxtun v3.8b, v3.8h
|
|
uaddw v4.8h, v16.8h, v4.8b
|
|
st1 {v0.8b}, [x3], x2
|
|
uaddw v0.8h, v17.8h, v5.8b
|
|
st1 {v1.8b}, [x3], x2
|
|
uaddw v1.8h, v18.8h, v6.8b
|
|
st1 {v2.8b}, [x3], x2
|
|
uaddw v2.8h, v19.8h, v7.8b
|
|
sqxtun v4.8b, v4.8h
|
|
sqxtun v0.8b, v0.8h
|
|
st1 {v3.8b}, [x3], x2
|
|
sqxtun v1.8b, v1.8h
|
|
sqxtun v2.8b, v2.8h
|
|
st1 {v4.8b}, [x3], x2
|
|
st1 {v0.8b}, [x3], x2
|
|
st1 {v1.8b}, [x3], x2
|
|
st1 {v2.8b}, [x3]
|
|
ret
|
|
endfunc
|