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/*
* Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS).
*
* 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"
.macro vsetvlstatic8 len an maxlen mn=m4
.if \len == 4
vsetivli zero, \len, e8, mf4, ta, ma
.elseif \len == 8
vsetivli zero, \len, e8, mf2, ta, ma
.elseif \len == 16
vsetivli zero, \len, e8, m1, ta, ma
.elseif \len == 32
li \an, \len
vsetvli zero, \an, e8, m2, ta, ma
.elseif \len == 64
li \an, \maxlen
vsetvli zero, \an, e8, \mn, ta, ma
.endif
.endm
.macro copy_avg len
func ff_avg\len\()_rvv, zve32x
csrwi vxrm, 0
vsetvlstatic8 \len t0 64
1:
vle8.v v8, (a2)
vle8.v v16, (a0)
vaaddu.vv v8, v8, v16
addi a4, a4, -1
vse8.v v8, (a0)
add a2, a2, a3
add a0, a0, a1
bnez a4, 1b
ret
endfunc
.endm
.irp len, 64, 32, 16, 8, 4
copy_avg \len
.endr
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