mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
2.1 KiB
63 lines
2.1 KiB
/* |
|
* 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, zve64x |
|
li t0, 8 * 8 |
|
vsetvli zero, t0, e16, m8, ta, ma |
|
vle16.v v24, (a0) |
|
/* RVV only has signed-signed and unsigned-unsigned clipping. |
|
* We need two steps for signed-to-unsigned clipping. */ |
|
vmax.vx v24, v24, zero |
|
vsetvli zero, zero, e8, m4, ta, ma |
|
vnclipu.wi v16, v24, 0 |
|
vsetivli zero, 8, e8, mf2, ta, ma |
|
vsse64.v v16, (a1), a2 |
|
ret |
|
endfunc |
|
|
|
func ff_put_signed_pixels_clamped_rvv, zve64x |
|
li t0, 8 * 8 |
|
vsetvli zero, t0, e8, m4, ta, ma |
|
vle16.v v24, (a0) |
|
li t1, 128 |
|
vnclip.wi v16, v24, 0 |
|
vadd.vx v16, v16, t1 |
|
vsetivli zero, 8, e8, mf2, ta, ma |
|
vsse64.v v16, (a1), a2 |
|
ret |
|
endfunc |
|
|
|
func ff_add_pixels_clamped_rvv, zve64x |
|
vsetivli zero, 8, e8, mf2, ta, ma |
|
li t0, 8 * 8 |
|
vlse64.v v16, (a1), a2 |
|
vsetvli zero, t0, e8, m4, ta, ma |
|
vle16.v v24, (a0) |
|
vwaddu.wv v24, v24, v16 |
|
vsetvli zero, zero, e16, m8, ta, ma |
|
vmax.vx v24, v24, zero |
|
vsetvli zero, zero, e8, m4, ta, ma |
|
vnclipu.wi v16, v24, 0 |
|
vsetivli zero, 8, e8, mf2, ta, ma |
|
vsse64.v v16, (a1), a2 |
|
ret |
|
endfunc
|
|
|