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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"
func ff_rv34_inv_transform_dc_rvv, zve32x
lpad 0
lh t1, 0(a0)
li t0, 13 * 13 * 3
mul t2, t0, t1
srai t2, t2, 11
vsetivli zero, 16, e16, m2, ta, ma
vmv.v.x v8, t2
vse16.v v8, (a0)
ret
endfunc
func ff_rv34_idct_dc_add_rvv, zve32x
lpad 0
vsetivli zero, 4, e8, mf4, ta, ma
vlse32.v v0, (a0), a1
li t1, 169
mul t1, t1, a2
addi t1, t1, 512
srai t1, t1, 10
vsetivli zero, 4*4, e8, m2, ta, ma
bgez t1, 1f
neg t1, t1
vssubu.vx v0, v0, t1
vsetivli zero, 4, e8, mf4, ta, ma
vsse32.v v0, (a0), a1
ret
1:
vsaddu.vx v0, v0, t1
vsetivli zero, 4, e8, mf4, ta, ma
vsse32.v v0, (a0), a1
ret
endfunc
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