mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
44 lines
1.4 KiB
ArmAsm
44 lines
1.4 KiB
ArmAsm
/*
|
|
* Copyright © 2023 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 "config.h"
|
|
#include "libavutil/riscv/asm.S"
|
|
|
|
func ff_extract_exponents_rvvb, zve32x, zvbb
|
|
1:
|
|
vsetvli t0, a2, e32, m8, ta, ma
|
|
vle32.v v8, (a1)
|
|
sub a2, a2, t0
|
|
vneg.v v16, v8
|
|
sh2add a1, t0, a1
|
|
vmax.vv v8, v8, v16
|
|
vclz.v v8, v8
|
|
vsetvli zero, zero, e16, m4, ta, ma
|
|
vncvt.x.x.w v4, v8
|
|
vsetvli zero, zero, e8, m2, ta, ma
|
|
vncvt.x.x.w v2, v4
|
|
vadd.vi v2, v2, 24 - 32
|
|
vse8.v v2, (a0)
|
|
add a0, a0, t0
|
|
bnez a2, 1b
|
|
|
|
ret
|
|
endfunc
|