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.
203 lines
7.7 KiB
203 lines
7.7 KiB
11 years ago
|
/*
|
||
|
|
* ARM NEON optimised Float DSP functions
|
||
|
|
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
|
||
|
|
* Copyright (c) 2014 Janne Grunau <janne-libav@jannau.net>
|
||
|
|
*
|
||
|
|
* This file is part of Libav.
|
||
|
|
*
|
||
|
|
* Libav 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.
|
||
|
|
*
|
||
|
|
* Libav 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 Libav; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "config.h"
|
||
|
|
#include "asm.S"
|
||
|
|
|
||
|
|
function ff_vector_fmul_neon, export=1
|
||
|
|
1: subs w3, w3, #16
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
ld1 {v2.4S, v3.4S}, [x1], #32
|
||
|
|
ld1 {v4.4S, v5.4S}, [x2], #32
|
||
|
|
ld1 {v6.4S, v7.4S}, [x2], #32
|
||
|
|
fmul v16.4S, v0.4S, v4.4S
|
||
|
|
fmul v17.4S, v1.4S, v5.4S
|
||
|
|
fmul v18.4S, v2.4S, v6.4S
|
||
|
|
fmul v19.4S, v3.4S, v7.4S
|
||
|
|
st1 {v16.4S, v17.4S}, [x0], #32
|
||
|
|
st1 {v18.4S, v19.4S}, [x0], #32
|
||
|
|
b.ne 1b
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_vector_fmac_scalar_neon, export=1
|
||
|
|
mov x3, #-32
|
||
|
|
1: subs w2, w2, #16
|
||
|
|
ld1 {v16.4S, v17.4S}, [x0], #32
|
||
|
|
ld1 {v18.4S, v19.4S}, [x0], x3
|
||
|
|
ld1 {v4.4S, v5.4S}, [x1], #32
|
||
|
|
ld1 {v6.4S, v7.4S}, [x1], #32
|
||
|
|
fmla v16.4S, v4.4S, v0.S[0]
|
||
|
|
fmla v17.4S, v5.4S, v0.S[0]
|
||
|
|
fmla v18.4S, v6.4S, v0.S[0]
|
||
|
|
fmla v19.4S, v7.4S, v0.S[0]
|
||
|
|
st1 {v16.4S, v17.4S}, [x0], #32
|
||
|
|
st1 {v18.4S, v19.4S}, [x0], #32
|
||
|
|
b.ne 1b
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_vector_fmul_scalar_neon, export=1
|
||
|
|
mov w4, #15
|
||
|
|
bics w3, w2, w4
|
||
|
|
dup v16.4S, v0.S[0]
|
||
|
|
b.eq 3f
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
1: subs w3, w3, #16
|
||
|
|
fmul v0.4S, v0.4S, v16.4S
|
||
|
|
ld1 {v2.4S, v3.4S}, [x1], #32
|
||
|
|
fmul v1.4S, v1.4S, v16.4S
|
||
|
|
fmul v2.4S, v2.4S, v16.4S
|
||
|
|
st1 {v0.4S, v1.4S}, [x0], #32
|
||
|
|
fmul v3.4S, v3.4S, v16.4S
|
||
|
|
b.eq 2f
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
st1 {v2.4S, v3.4S}, [x0], #32
|
||
|
|
b 1b
|
||
|
|
2: ands w2, w2, #15
|
||
|
|
st1 {v2.4S, v3.4S}, [x0], #32
|
||
|
|
b.eq 4f
|
||
|
|
3: ld1 {v0.4S}, [x1], #16
|
||
|
|
fmul v0.4S, v0.4S, v16.4S
|
||
|
|
st1 {v0.4S}, [x0], #16
|
||
|
|
subs w2, w2, #4
|
||
|
|
b.gt 3b
|
||
|
|
4: ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_vector_dmul_scalar_neon, export=1
|
||
|
|
dup v16.2D, v0.D[0]
|
||
|
|
ld1 {v0.2D, v1.2D}, [x1], #32
|
||
|
|
1: subs w2, w2, #8
|
||
|
|
fmul v0.2D, v0.2D, v16.2D
|
||
|
|
ld1 {v2.2D, v3.2D}, [x1], #32
|
||
|
|
fmul v1.2D, v1.2D, v16.2D
|
||
|
|
fmul v2.2D, v2.2D, v16.2D
|
||
|
|
st1 {v0.2D, v1.2D}, [x0], #32
|
||
|
|
fmul v3.2D, v3.2D, v16.2D
|
||
|
|
ld1 {v0.2D, v1.2D}, [x1], #32
|
||
|
|
st1 {v2.2D, v3.2D}, [x0], #32
|
||
|
|
b.gt 1b
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_vector_fmul_window_neon, export=1
|
||
|
|
sxtw x4, w4 // len
|
||
|
|
sub x2, x2, #8
|
||
|
|
sub x5, x4, #2
|
||
|
|
add x2, x2, x5, lsl #2 // src1 + 4 * (len - 4)
|
||
|
|
add x6, x3, x5, lsl #3 // win + 8 * (len - 2)
|
||
|
|
add x5, x0, x5, lsl #3 // dst + 8 * (len - 2)
|
||
|
|
mov x7, #-16
|
||
|
|
ld1 {v0.4S}, [x1], #16 // s0
|
||
|
|
ld1 {v2.4S}, [x3], #16 // wi
|
||
|
|
ld1 {v1.4S}, [x2], x7 // s1
|
||
|
|
1: ld1 {v3.4S}, [x6], x7 // wj
|
||
|
|
subs x4, x4, #4
|
||
|
|
fmul v17.4S, v0.4S, v2.4S // s0 * wi
|
||
|
|
rev64 v4.4S, v1.4S
|
||
|
|
rev64 v5.4S, v3.4S
|
||
|
|
rev64 v17.4S, v17.4S
|
||
|
|
ext v4.16B, v4.16B, v4.16B, #8 // s1_r
|
||
|
|
ext v5.16B, v5.16B, v5.16B, #8 // wj_r
|
||
|
|
ext v17.16B, v17.16B, v17.16B, #8 // (s0 * wi)_rev
|
||
|
|
fmul v16.4S, v0.4S, v5.4S // s0 * wj_r
|
||
|
|
fmla v17.4S, v1.4S, v3.4S // (s0 * wi)_rev + s1 * wj
|
||
|
|
b.eq 2f
|
||
|
|
ld1 {v0.4S}, [x1], #16
|
||
|
|
fmls v16.4S, v4.4S, v2.4S // s0 * wj_r - s1_r * wi
|
||
|
|
st1 {v17.4S}, [x5], x7
|
||
|
|
ld1 {v2.4S}, [x3], #16
|
||
|
|
ld1 {v1.4S}, [x2], x7
|
||
|
|
st1 {v16.4S}, [x0], #16
|
||
|
|
b 1b
|
||
|
|
2:
|
||
|
|
fmls v16.4S, v4.4S, v2.4S // s0 * wj_r - s1_r * wi
|
||
|
|
st1 {v17.4S}, [x5], x7
|
||
|
|
st1 {v16.4S}, [x0], #16
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_vector_fmul_add_neon, export=1
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
ld1 {v2.4S, v3.4S}, [x2], #32
|
||
|
|
ld1 {v4.4S, v5.4S}, [x3], #32
|
||
|
|
1: subs w4, w4, #8
|
||
|
|
fmla v4.4S, v0.4S, v2.4S
|
||
|
|
fmla v5.4S, v1.4S, v3.4S
|
||
|
|
b.eq 2f
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
ld1 {v2.4S, v3.4S}, [x2], #32
|
||
|
|
st1 {v4.4S, v5.4S}, [x0], #32
|
||
|
|
ld1 {v4.4S, v5.4S}, [x3], #32
|
||
|
|
b 1b
|
||
|
|
2: st1 {v4.4S, v5.4S}, [x0], #32
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_vector_fmul_reverse_neon, export=1
|
||
|
|
sxtw x3, w3
|
||
|
|
add x2, x2, x3, lsl #2
|
||
|
|
sub x2, x2, #32
|
||
|
|
mov x4, #-32
|
||
|
|
ld1 {v2.4S, v3.4S}, [x2], x4
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
1: subs x3, x3, #8
|
||
|
|
rev64 v3.4S, v3.4S
|
||
|
|
rev64 v2.4S, v2.4S
|
||
|
|
ext v3.16B, v3.16B, v3.16B, #8
|
||
|
|
ext v2.16B, v2.16B, v2.16B, #8
|
||
|
|
fmul v16.4S, v0.4S, v3.4S
|
||
|
|
fmul v17.4S, v1.4S, v2.4S
|
||
|
|
b.eq 2f
|
||
|
|
ld1 {v2.4S, v3.4S}, [x2], x4
|
||
|
|
ld1 {v0.4S, v1.4S}, [x1], #32
|
||
|
|
st1 {v16.4S, v17.4S}, [x0], #32
|
||
|
|
b 1b
|
||
|
|
2: st1 {v16.4S, v17.4S}, [x0], #32
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_butterflies_float_neon, export=1
|
||
|
|
1: ld1 {v0.4S}, [x0]
|
||
|
|
ld1 {v1.4S}, [x1]
|
||
|
|
subs w2, w2, #4
|
||
|
|
fsub v2.4S, v0.4S, v1.4S
|
||
|
|
fadd v3.4S, v0.4S, v1.4S
|
||
|
|
st1 {v2.4S}, [x1], #16
|
||
|
|
st1 {v3.4S}, [x0], #16
|
||
|
|
b.gt 1b
|
||
|
|
ret
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_scalarproduct_float_neon, export=1
|
||
|
|
movi v2.4S, #0
|
||
|
|
1: ld1 {v0.4S}, [x0], #16
|
||
|
|
ld1 {v1.4S}, [x1], #16
|
||
|
|
subs w2, w2, #4
|
||
|
|
fmla v2.4S, v0.4S, v1.4S
|
||
|
|
b.gt 1b
|
||
|
|
faddp v0.4S, v2.4S, v2.4S
|
||
|
|
faddp s0, v0.2S
|
||
|
|
ret
|
||
|
|
endfunc
|