mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
02594c8c01
As in the aligned case, we can use VLSE64.V, though the way of doing so gets more convoluted, so the performance gains are more modest: get_pixels_unaligned_c: 126.7 get_pixels_unaligned_rvv_i32: 145.5 (before) get_pixels_unaligned_rvv_i64: 62.2 (after) For the reference, those are the aligned benchmarks (unchanged) on the same T-Head C908 hardware: get_pixels_c: 126.7 get_pixels_rvi: 85.7 get_pixels_rvv_i64: 33.2
80 lines
2.3 KiB
ArmAsm
80 lines
2.3 KiB
ArmAsm
/*
|
|
* Copyright © 2022 Rémi Denis-Courmont.
|
|
*
|
|
* 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/riscv/asm.S"
|
|
|
|
func ff_get_pixels_8_rvv, zve64x
|
|
vsetivli zero, 8, e8, mf2, ta, ma
|
|
li t0, 8 * 8
|
|
1:
|
|
vlse64.v v16, (a1), a2
|
|
vsetvli zero, t0, e8, m4, ta, ma
|
|
vwcvtu.x.x.v v8, v16
|
|
vse16.v v8, (a0)
|
|
ret
|
|
endfunc
|
|
|
|
func ff_get_pixels_unaligned_8_rvv, zve64x
|
|
andi t1, a1, 7
|
|
vsetivli zero, 8, e64, m4, ta, ma
|
|
li t0, 8 * 8
|
|
beqz t1, 1b
|
|
andi a1, a1, -8
|
|
slli t2, t1, 3
|
|
addi t1, a1, 8
|
|
sub t3, t0, t2
|
|
vlse64.v v16, (a1), a2
|
|
vlse64.v v24, (t1), a2
|
|
vsrl.vx v16, v16, t2
|
|
vsll.vx v24, v24, t3
|
|
vor.vv v16, v16, v24
|
|
vsetvli zero, t0, e8, m4, ta, ma
|
|
vwcvtu.x.x.v v8, v16
|
|
vse16.v v8, (a0)
|
|
ret
|
|
endfunc
|
|
|
|
func ff_diff_pixels_rvv, zve64x
|
|
vsetivli zero, 8, e8, mf2, ta, ma
|
|
li t0, 8 * 8
|
|
vlse64.v v16, (a1), a3
|
|
vlse64.v v24, (a2), a3
|
|
vsetvli zero, t0, e8, m4, ta, ma
|
|
vwsubu.vv v8, v16, v24
|
|
vse16.v v8, (a0)
|
|
ret
|
|
endfunc
|
|
|
|
func ff_diff_pixels_unaligned_rvv, zve32x
|
|
vsetivli zero, 8, e8, mf2, ta, ma
|
|
vlsseg8e8.v v16, (a1), a3
|
|
vlsseg8e8.v v24, (a2), a3
|
|
vwsubu.vv v8, v16, v24
|
|
vwsubu.vv v9, v17, v25
|
|
vwsubu.vv v10, v18, v26
|
|
vwsubu.vv v11, v19, v27
|
|
vwsubu.vv v12, v20, v28
|
|
vwsubu.vv v13, v21, v29
|
|
vwsubu.vv v14, v22, v30
|
|
vwsubu.vv v15, v23, v31
|
|
vsseg8e16.v v8, (a0)
|
|
ret
|
|
endfunc
|