mirror of https://git.ffmpeg.org/ffmpeg.git
262 lines
9.4 KiB
ArmAsm
262 lines
9.4 KiB
ArmAsm
/*
|
|
* Copyright (c) 2011 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/arm/asm.S"
|
|
|
|
.macro bflies d0, d1, r0, r1
|
|
vrev64.32 \r0, \d1 @ t5, t6, t1, t2
|
|
vhsub.s16 \r1, \d1, \r0 @ t1-t5, t2-t6, t5-t1, t6-t2
|
|
vhadd.s16 \r0, \d1, \r0 @ t1+t5, t2+t6, t5+t1, t6+t2
|
|
vext.16 \r1, \r1, \r1, #1 @ t2-t6, t5-t1, t6-t2, t1-t5
|
|
vtrn.32 \r0, \r1 @ t1+t5, t2+t6, t2-t6, t5-t1
|
|
@ t5, t6, t4, t3
|
|
vhsub.s16 \d1, \d0, \r0
|
|
vhadd.s16 \d0, \d0, \r0
|
|
.endm
|
|
|
|
.macro transform01 q0, q1, d3, c0, c1, r0, w0, w1
|
|
vrev32.16 \r0, \d3
|
|
vmull.s16 \w0, \d3, \c0
|
|
vmlal.s16 \w0, \r0, \c1
|
|
vshrn.s32 \d3, \w0, #15
|
|
bflies \q0, \q1, \w0, \w1
|
|
.endm
|
|
|
|
.macro transform2 d0, d1, d2, d3, q0, q1, c0, c1, c2, c3, \
|
|
r0, r1, w0, w1
|
|
vrev32.16 \r0, \d1
|
|
vrev32.16 \r1, \d3
|
|
vmull.s16 \w0, \d1, \c0
|
|
vmlal.s16 \w0, \r0, \c1
|
|
vmull.s16 \w1, \d3, \c2
|
|
vmlal.s16 \w1, \r1, \c3
|
|
vshrn.s32 \d1, \w0, #15
|
|
vshrn.s32 \d3, \w1, #15
|
|
bflies \q0, \q1, \w0, \w1
|
|
.endm
|
|
|
|
.macro fft4 d0, d1, r0, r1
|
|
vhsub.s16 \r0, \d0, \d1 @ t3, t4, t8, t7
|
|
vhsub.s16 \r1, \d1, \d0
|
|
vhadd.s16 \d0, \d0, \d1 @ t1, t2, t6, t5
|
|
vmov.i64 \d1, #0xffff00000000
|
|
vbit \r0, \r1, \d1
|
|
vrev64.16 \r1, \r0 @ t7, t8, t4, t3
|
|
vtrn.32 \r0, \r1 @ t3, t4, t7, t8
|
|
vtrn.32 \d0, \r0 @ t1, t2, t3, t4, t6, t5, t8, t7
|
|
vhsub.s16 \d1, \d0, \r0 @ r2, i2, r3, i1
|
|
vhadd.s16 \d0, \d0, \r0 @ r0, i0, r1, i3
|
|
.endm
|
|
|
|
.macro fft8 d0, d1, d2, d3, q0, q1, c0, c1, r0, r1, w0, w1
|
|
fft4 \d0, \d1, \r0, \r1
|
|
vtrn.32 \d0, \d1 @ z0, z2, z1, z3
|
|
vhadd.s16 \r0, \d2, \d3 @ t1, t2, t3, t4
|
|
vhsub.s16 \d3, \d2, \d3 @ z5, z7
|
|
vmov \d2, \r0
|
|
transform01 \q0, \q1, \d3, \c0, \c1, \r0, \w0, \w1
|
|
.endm
|
|
|
|
function fft4_neon
|
|
vld1.16 {d0-d1}, [r0]
|
|
fft4 d0, d1, d2, d3
|
|
vst1.16 {d0-d1}, [r0]
|
|
bx lr
|
|
endfunc
|
|
|
|
function fft8_neon
|
|
vld1.16 {d0-d3}, [r0,:128]
|
|
movrel r1, coefs
|
|
vld1.16 {d30}, [r1,:64]
|
|
vdup.16 d31, d30[0]
|
|
fft8 d0, d1, d2, d3, q0, q1, d31, d30, d20, d21, q8, q9
|
|
vtrn.32 d0, d1
|
|
vtrn.32 d2, d3
|
|
vst1.16 {d0-d3}, [r0,:128]
|
|
bx lr
|
|
endfunc
|
|
|
|
function fft16_neon
|
|
vld1.16 {d0-d3}, [r0,:128]!
|
|
vld1.16 {d4-d7}, [r0,:128]
|
|
movrel r1, coefs
|
|
sub r0, r0, #32
|
|
vld1.16 {d28-d31},[r1,:128]
|
|
vdup.16 d31, d28[0]
|
|
fft8 d0, d1, d2, d3, q0, q1, d31, d28, d20, d21, q8, q9
|
|
vswp d5, d6
|
|
fft4 q2, q3, q8, q9
|
|
vswp d5, d6
|
|
vtrn.32 q0, q1 @ z0, z4, z2, z6, z1, z5, z3, z7
|
|
vtrn.32 q2, q3 @ z8, z12,z10,z14,z9, z13,z11,z15
|
|
vswp d1, d2
|
|
vdup.16 d31, d28[0]
|
|
transform01 q0, q2, d5, d31, d28, d20, q8, q9
|
|
vdup.16 d26, d29[0]
|
|
vdup.16 d27, d30[0]
|
|
transform2 d2, d6, d3, d7, q1, q3, d26, d30, d27, d29, \
|
|
d20, d21, q8, q9
|
|
vtrn.32 q0, q1
|
|
vtrn.32 q2, q3
|
|
vst1.16 {d0-d3}, [r0,:128]!
|
|
vst1.16 {d4-d7}, [r0,:128]
|
|
bx lr
|
|
endfunc
|
|
|
|
function fft_pass_neon
|
|
push {r4,lr}
|
|
movrel lr, coefs + 24
|
|
vld1.16 {d30}, [lr,:64]
|
|
lsl r12, r2, #3
|
|
vmov d31, d30
|
|
add r3, r1, r2, lsl #2
|
|
mov lr, #-8
|
|
sub r3, r3, #2
|
|
mov r4, r0
|
|
vld1.16 {d27[]}, [r3,:16]
|
|
sub r3, r3, #6
|
|
vld1.16 {q0}, [r4,:128], r12
|
|
vld1.16 {q1}, [r4,:128], r12
|
|
vld1.16 {q2}, [r4,:128], r12
|
|
vld1.16 {q3}, [r4,:128], r12
|
|
vld1.16 {d28}, [r1,:64]!
|
|
vld1.16 {d29}, [r3,:64], lr
|
|
vswp d1, d2
|
|
vswp d5, d6
|
|
vtrn.32 d0, d1
|
|
vtrn.32 d4, d5
|
|
vdup.16 d25, d28[1]
|
|
vmul.s16 d27, d27, d31
|
|
transform01 q0, q2, d5, d25, d27, d20, q8, q9
|
|
b 2f
|
|
1:
|
|
mov r4, r0
|
|
vdup.16 d26, d29[0]
|
|
vld1.16 {q0}, [r4,:128], r12
|
|
vld1.16 {q1}, [r4,:128], r12
|
|
vld1.16 {q2}, [r4,:128], r12
|
|
vld1.16 {q3}, [r4,:128], r12
|
|
vld1.16 {d28}, [r1,:64]!
|
|
vld1.16 {d29}, [r3,:64], lr
|
|
vswp d1, d2
|
|
vswp d5, d6
|
|
vtrn.32 d0, d1
|
|
vtrn.32 d4, d5
|
|
vdup.16 d24, d28[0]
|
|
vdup.16 d25, d28[1]
|
|
vdup.16 d27, d29[3]
|
|
vmul.s16 q13, q13, q15
|
|
transform2 d0, d4, d1, d5, q0, q2, d24, d26, d25, d27, \
|
|
d16, d17, q9, q10
|
|
2:
|
|
vtrn.32 d2, d3
|
|
vtrn.32 d6, d7
|
|
vdup.16 d24, d28[2]
|
|
vdup.16 d26, d29[2]
|
|
vdup.16 d25, d28[3]
|
|
vdup.16 d27, d29[1]
|
|
vmul.s16 q13, q13, q15
|
|
transform2 d2, d6, d3, d7, q1, q3, d24, d26, d25, d27, \
|
|
d16, d17, q9, q10
|
|
vtrn.32 d0, d1
|
|
vtrn.32 d2, d3
|
|
vtrn.32 d4, d5
|
|
vtrn.32 d6, d7
|
|
vswp d1, d2
|
|
vswp d5, d6
|
|
mov r4, r0
|
|
vst1.16 {q0}, [r4,:128], r12
|
|
vst1.16 {q1}, [r4,:128], r12
|
|
vst1.16 {q2}, [r4,:128], r12
|
|
vst1.16 {q3}, [r4,:128], r12
|
|
add r0, r0, #16
|
|
subs r2, r2, #2
|
|
bgt 1b
|
|
pop {r4,pc}
|
|
endfunc
|
|
|
|
#define F_SQRT1_2 23170
|
|
#define F_COS_16_1 30274
|
|
#define F_COS_16_3 12540
|
|
|
|
const coefs, align=4
|
|
.short F_SQRT1_2, -F_SQRT1_2, -F_SQRT1_2, F_SQRT1_2
|
|
.short F_COS_16_1,-F_COS_16_1,-F_COS_16_1, F_COS_16_1
|
|
.short F_COS_16_3,-F_COS_16_3,-F_COS_16_3, F_COS_16_3
|
|
.short 1, -1, -1, 1
|
|
endconst
|
|
|
|
.macro def_fft n, n2, n4
|
|
function fft\n\()_neon
|
|
push {r4, lr}
|
|
mov r4, r0
|
|
bl fft\n2\()_neon
|
|
add r0, r4, #\n4*2*4
|
|
bl fft\n4\()_neon
|
|
add r0, r4, #\n4*3*4
|
|
bl fft\n4\()_neon
|
|
mov r0, r4
|
|
pop {r4, lr}
|
|
movrelx r1, X(ff_cos_\n\()_fixed)
|
|
mov r2, #\n4/2
|
|
b fft_pass_neon
|
|
endfunc
|
|
.endm
|
|
|
|
def_fft 32, 16, 8
|
|
def_fft 64, 32, 16
|
|
def_fft 128, 64, 32
|
|
def_fft 256, 128, 64
|
|
def_fft 512, 256, 128
|
|
def_fft 1024, 512, 256
|
|
def_fft 2048, 1024, 512
|
|
def_fft 4096, 2048, 1024
|
|
def_fft 8192, 4096, 2048
|
|
def_fft 16384, 8192, 4096
|
|
def_fft 32768, 16384, 8192
|
|
def_fft 65536, 32768, 16384
|
|
|
|
function ff_fft_fixed_calc_neon, export=1
|
|
ldr r2, [r0]
|
|
sub r2, r2, #2
|
|
movrel r3, fft_fixed_tab_neon
|
|
ldr r3, [r3, r2, lsl #2]
|
|
mov r0, r1
|
|
bx r3
|
|
endfunc
|
|
|
|
const fft_fixed_tab_neon, relocate=1
|
|
.word fft4_neon
|
|
.word fft8_neon
|
|
.word fft16_neon
|
|
.word fft32_neon
|
|
.word fft64_neon
|
|
.word fft128_neon
|
|
.word fft256_neon
|
|
.word fft512_neon
|
|
.word fft1024_neon
|
|
.word fft2048_neon
|
|
.word fft4096_neon
|
|
.word fft8192_neon
|
|
.word fft16384_neon
|
|
.word fft32768_neon
|
|
.word fft65536_neon
|
|
endconst
|