mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
144 lines
4.9 KiB
ArmAsm
144 lines
4.9 KiB
ArmAsm
/*
|
|
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
|
|
*
|
|
* 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 "asm.S"
|
|
|
|
.macro skip args:vararg
|
|
.endm
|
|
|
|
.macro sum8 lo, hi, w, p, t1, t2, t3, t4, rsb=skip, offs=0
|
|
ldr \t1, [\w, #4*\offs]
|
|
ldr \t2, [\p, #4]!
|
|
\rsb \t1, \t1, #0
|
|
.irpc i, 135
|
|
ldr \t3, [\w, #4*64*\i+4*\offs]
|
|
ldr \t4, [\p, #4*64*\i]
|
|
smlal \lo, \hi, \t1, \t2
|
|
\rsb \t3, \t3, #0
|
|
ldr \t1, [\w, #4*64*(\i+1)+4*\offs]
|
|
ldr \t2, [\p, #4*64*(\i+1)]
|
|
smlal \lo, \hi, \t3, \t4
|
|
\rsb \t1, \t1, #0
|
|
.endr
|
|
ldr \t3, [\w, #4*64*7+4*\offs]
|
|
ldr \t4, [\p, #4*64*7]
|
|
smlal \lo, \hi, \t1, \t2
|
|
\rsb \t3, \t3, #0
|
|
smlal \lo, \hi, \t3, \t4
|
|
.endm
|
|
|
|
.macro round rd, lo, hi
|
|
lsr \rd, \lo, #24
|
|
bic \lo, \lo, #0xff000000
|
|
orr \rd, \rd, \hi, lsl #8
|
|
mov \hi, #0
|
|
ssat \rd, #16, \rd
|
|
.endm
|
|
|
|
function ff_mpadsp_apply_window_fixed_armv6, export=1
|
|
push {r2,r4-r11,lr}
|
|
|
|
add r4, r0, #4*512 @ synth_buf + 512
|
|
.rept 4
|
|
ldm r0!, {r5-r12}
|
|
stm r4!, {r5-r12}
|
|
.endr
|
|
|
|
ldr r4, [sp, #40] @ incr
|
|
sub r0, r0, #4*17 @ synth_buf + 16
|
|
ldr r8, [r2] @ sum:low
|
|
add r2, r0, #4*32 @ synth_buf + 48
|
|
rsb r5, r4, r4, lsl #5 @ 31 * incr
|
|
lsl r4, r4, #1
|
|
asr r9, r8, #31 @ sum:high
|
|
add r5, r3, r5, lsl #1 @ samples2
|
|
add r6, r1, #4*32 @ w2
|
|
str r4, [sp, #40]
|
|
|
|
sum8 r8, r9, r1, r0, r10, r11, r12, lr
|
|
sum8 r8, r9, r1, r2, r10, r11, r12, lr, rsb, 32
|
|
round r10, r8, r9
|
|
strh_post r10, r3, r4
|
|
|
|
mov lr, #15
|
|
1:
|
|
ldr r12, [r0, #4]!
|
|
ldr r11, [r6, #-4]!
|
|
ldr r10, [r1, #4]!
|
|
.irpc i, 0246
|
|
.if \i
|
|
ldr r11, [r6, #4*64*\i]
|
|
ldr r10, [r1, #4*64*\i]
|
|
.endif
|
|
rsb r11, r11, #0
|
|
smlal r8, r9, r10, r12
|
|
ldr r10, [r0, #4*64*(\i+1)]
|
|
.ifeq \i
|
|
smull r4, r7, r11, r12
|
|
.else
|
|
smlal r4, r7, r11, r12
|
|
.endif
|
|
ldr r11, [r6, #4*64*(\i+1)]
|
|
ldr r12, [r1, #4*64*(\i+1)]
|
|
rsb r11, r11, #0
|
|
smlal r8, r9, r12, r10
|
|
.iflt \i-6
|
|
ldr r12, [r0, #4*64*(\i+2)]
|
|
.else
|
|
ldr r12, [r2, #-4]!
|
|
.endif
|
|
smlal r4, r7, r11, r10
|
|
.endr
|
|
.irpc i, 0246
|
|
ldr r10, [r1, #4*64*\i+4*32]
|
|
rsb r12, r12, #0
|
|
ldr r11, [r6, #4*64*\i+4*32]
|
|
smlal r8, r9, r10, r12
|
|
ldr r10, [r2, #4*64*(\i+1)]
|
|
smlal r4, r7, r11, r12
|
|
ldr r12, [r1, #4*64*(\i+1)+4*32]
|
|
rsb r10, r10, #0
|
|
ldr r11, [r6, #4*64*(\i+1)+4*32]
|
|
smlal r8, r9, r12, r10
|
|
.iflt \i-6
|
|
ldr r12, [r2, #4*64*(\i+2)]
|
|
.else
|
|
ldr r12, [sp, #40]
|
|
.endif
|
|
smlal r4, r7, r11, r10
|
|
.endr
|
|
round r10, r8, r9
|
|
adds r8, r8, r4
|
|
adc r9, r9, r7
|
|
strh_post r10, r3, r12
|
|
round r11, r8, r9
|
|
subs lr, lr, #1
|
|
strh_dpost r11, r5, r12
|
|
bgt 1b
|
|
|
|
sum8 r8, r9, r1, r0, r10, r11, r12, lr, rsb, 33
|
|
pop {r4}
|
|
round r10, r8, r9
|
|
str r8, [r4]
|
|
strh r10, [r3]
|
|
|
|
pop {r4-r11,pc}
|
|
endfunc
|