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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
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
vsetivli zero, 4, e8, mf4, ta, ma
vlse32.v v0, (a0), a1
li t1, 169
mul t1, t1, a2
li a2, 255
addi t1, t1, 512
srai t1, t1, 10
vsetivli zero, 4*4, e16, m2, ta, ma
vzext.vf2 v2, v0
vadd.vx v2, v2, t1
vmax.vx v2, v2, zero
vsetvli zero, zero, e8, m1, ta, ma
vnclipu.wi v0, v2, 0
vsetivli zero, 4, e8, mf4, ta, ma
vsse32.v v0, (a0), a1
ret
endfunc
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