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/*
* 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
lpad 0
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
lpad 0
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
lpad 0
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
lpad 0
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
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