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/*
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
*
* 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/aarch64/asm.S"
function ff_vorbis_inverse_coupling_neon, export=1
movi v20.4s, #1<<7, lsl #24
subs x2, x2, #4
mov x3, x0
mov x4, x1
b.eq 3f
ld1 {v7.4s}, [x1], #16
ld1 {v6.4s}, [x0], #16
cmle v4.4s, v7.4s, #0
and v5.16b, v6.16b, v20.16b
eor v7.16b, v7.16b, v5.16b
and v2.16b, v7.16b, v4.16b
bic v3.16b, v7.16b, v4.16b
fadd v7.4s, v6.4s, v2.4s
fsub v6.4s, v6.4s, v3.4s
1: ld1 {v1.4s}, [x1], #16
ld1 {v0.4s}, [x0], #16
cmle v4.4s, v1.4s, #0
and v5.16b, v0.16b, v20.16b
eor v1.16b, v1.16b, v5.16b
st1 {v7.4s}, [x3], #16
st1 {v6.4s}, [x4], #16
and v2.16b, v1.16b, v4.16b
bic v3.16b, v1.16b, v4.16b
fadd v1.4s, v0.4s, v2.4s
fsub v0.4s, v0.4s, v3.4s
subs x2, x2, #8
b.le 2f
ld1 {v7.4s}, [x1], #16
ld1 {v6.4s}, [x0], #16
cmle v4.4s, v7.4s, #0
and v5.16b, v6.16b, v20.16b
eor v7.16b, v7.16b, v5.16b
st1 {v1.4s}, [x3], #16
st1 {v0.4s}, [x4], #16
and v2.16b, v7.16b, v4.16b
bic v3.16b, v7.16b, v4.16b
fadd v7.4s, v6.4s, v2.4s
fsub v6.4s, v6.4s, v3.4s
b 1b
2: st1 {v1.4s}, [x3], #16
st1 {v0.4s}, [x4], #16
b.lt ret
3: ld1 {v1.4s}, [x1]
ld1 {v0.4s}, [x0]
cmle v4.4s, v1.4s, #0
and v5.16b, v0.16b, v20.16b
eor v1.16b, v1.16b, v5.16b
and v2.16b, v1.16b, v4.16b
bic v3.16b, v1.16b, v4.16b
fadd v1.4s, v0.4s, v2.4s
fsub v0.4s, v0.4s, v3.4s
st1 {v1.4s}, [x0], #16
st1 {v0.4s}, [x1], #16
ret:
ret
endfunc
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