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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 avgdc size
vwredsumu.vs v16, v8, v16
vsetivli zero, 1, e16, m1, ta, ma
vmv.x.s t1, v16
addi t1, t1, 1 << (\size - 1)
srai t1, t1, \size
.endm
.macro getdc type size
.ifc \type,top
vmv.v.x v16, zero
vle8.v v8, (a3)
avgdc \size
.elseif \type == left
vmv.v.x v16, zero
vle8.v v8, (a2)
avgdc \size
.elseif \type == dc
vmv.v.x v16, zero
vle8.v v8, (a2)
vwredsumu.vs v16, v8, v16
vle8.v v8, (a3)
avgdc \size
.else
li t1, \type
.endif
.endm
.macro dc_e32 type size n restore
.ifc \size,32
li t0, 32
vsetvli zero, t0, e8, m2, ta, ma
.else
vsetivli zero, 16, e8, m1, ta, ma
.endif
getdc \type \n
.if \restore == 1 && \size == 32
vsetvli zero, t0, e8, m2, ta, ma
.elseif \restore == 1 && \size == 16
vsetivli zero, 16, e8, m1, ta, ma
.endif
vmv.v.x v0, t1
.rept \size
vse8.v v0, (a0)
add a0, a0, a1
.endr
ret
.endm
.macro dc_e64 type size n restore
vsetivli zero, 8, e8, mf2, ta, ma
getdc \type \n
li t0, 64
vsetvli zero, t0, e8, m4, ta, ma
vmv.v.x v0, t1
vsetivli zero, 8, e8, mf2, ta, ma
vsse64.v v0, (a0), a1
ret
.endm
.macro func_dc name size type n restore ext
func ff_\()\name\()_\()\size\()x\size\()_rvv, \ext
.ifc \size,8
dc_e64 \type \size \n \restore
.else
dc_e32 \type \size \n \restore
.endif
endfunc
.endm
func_dc dc_127 32 127 0 0 zve32x
func_dc dc_127 16 127 0 0 zve32x
func_dc dc_127 8 127 0 0 zve64x
func_dc dc_128 32 128 0 0 zve32x
func_dc dc_128 16 128 0 0 zve32x
func_dc dc_128 8 128 0 0 zve64x
func_dc dc_129 32 129 0 0 zve32x
func_dc dc_129 16 129 0 0 zve32x
func_dc dc_129 8 129 0 0 zve64x
func_dc dc 32 dc 6 1 zve32x
func_dc dc 16 dc 5 1 zve32x
func_dc dc 8 dc 4 0 zve64x
func_dc dc_left 32 left 5 1 zve32x
func_dc dc_left 16 left 4 1 zve32x
func_dc dc_left 8 left 3 0 zve64x
func_dc dc_top 32 top 5 1 zve32x
func_dc dc_top 16 top 4 1 zve32x
func_dc dc_top 8 top 3 0 zve64x
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