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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_put_pixels_clamped_rvv, zve32x
vsetivli zero, 8, e16, m1, ta, ma
vlseg8e16.v v24, (a0)
1:
/* RVV only has signed-signed and unsigned-unsigned clipping.
* We need two steps for signed-to-unsigned clipping. */
vsetvli t0, zero, e16, m8, ta, ma
vmax.vx v24, v24, zero
vsetivli zero, 8, e8, mf2, ta, ma
vnclipu.wi v16, v24, 0
vnclipu.wi v17, v25, 0
vnclipu.wi v18, v26, 0
vnclipu.wi v19, v27, 0
vnclipu.wi v20, v28, 0
vnclipu.wi v21, v29, 0
vnclipu.wi v22, v30, 0
vnclipu.wi v23, v31, 0
vssseg8e8.v v16, (a1), a2
ret
endfunc
func ff_put_signed_pixels_clamped_rvv, zve32x
vsetivli zero, 8, e16, m1, ta, ma
vlseg8e16.v v24, (a0)
li t1, 128
vsetivli zero, 8, e8, mf2, ta, ma
vnclip.wi v16, v24, 0
vnclip.wi v17, v25, 0
vnclip.wi v18, v26, 0
vnclip.wi v19, v27, 0
vnclip.wi v20, v28, 0
vnclip.wi v21, v29, 0
vnclip.wi v22, v30, 0
vnclip.wi v23, v31, 0
vsetvli t0, zero, e8, m8, ta, ma
vadd.vx v16, v16, t1
vsetivli zero, 8, e8, mf2, ta, ma
vssseg8e8.v v16, (a1), a2
ret
endfunc
func ff_add_pixels_clamped_rvv, zve32x
vsetivli zero, 8, e8, mf2, ta, ma
vlseg8e16.v v24, (a0)
vlsseg8e8.v v16, (a1), a2
vwaddu.wv v24, v24, v16
vwaddu.wv v25, v25, v17
vwaddu.wv v26, v26, v18
vwaddu.wv v27, v27, v19
vwaddu.wv v28, v28, v20
vwaddu.wv v29, v29, v21
vwaddu.wv v30, v30, v22
vwaddu.wv v31, v31, v23
j 1b
endfunc
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