aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* ARM NEON optimised Format Conversion Utils
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
* Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>
*
* 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/aarch64/asm.S"
function ff_int32_to_float_fmul_scalar_neon, export=1
ld1 {v1.4s,v2.4s}, [x1], #32
scvtf v1.4s, v1.4s
scvtf v2.4s, v2.4s
1:
subs w2, w2, #8
fmul v3.4s, v1.4s, v0.s[0]
fmul v4.4s, v2.4s, v0.s[0]
b.le 2f
ld1 {v1.4s,v2.4s}, [x1], #32
st1 {v3.4s,v4.4s}, [x0], #32
scvtf v1.4s, v1.4s
scvtf v2.4s, v2.4s
b 1b
2:
st1 {v3.4s,v4.4s}, [x0]
ret
endfunc
function ff_int32_to_float_fmul_array8_neon, export=1
lsr w4, w4, #3
subs w5, w4, #1
b.eq 1f
2:
ld1 {v0.4s,v1.4s}, [x2], #32
ld1 {v2.4s,v3.4s}, [x2], #32
scvtf v0.4s, v0.4s
scvtf v1.4s, v1.4s
ld1 {v16.2s}, [x3], #8
scvtf v2.4s, v2.4s
scvtf v3.4s, v3.4s
fmul v4.4s, v0.4s, v16.s[0]
fmul v5.4s, v1.4s, v16.s[0]
fmul v6.4s, v2.4s, v16.s[1]
fmul v7.4s, v3.4s, v16.s[1]
st1 {v4.4s,v5.4s}, [x1], #32
st1 {v6.4s,v7.4s}, [x1], #32
subs w5, w5, #2
b.gt 2b
b.eq 1f
ret
1:
ld1 {v0.4s,v1.4s}, [x2]
ld1 {v16.s}[0], [x3]
scvtf v0.4s, v0.4s
scvtf v1.4s, v1.4s
fmul v4.4s, v0.4s, v16.s[0]
fmul v5.4s, v1.4s, v16.s[0]
st1 {v4.4s,v5.4s}, [x1]
ret
endfunc
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