77 lines
2.6 KiB
ArmAsm
77 lines
2.6 KiB
ArmAsm
/*
|
|
* Copyright (c) 2009 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"
|
|
|
|
function ff_get_pixels_armv6, export=1
|
|
pld [r1, r2]
|
|
push {r4-r8, lr}
|
|
mov lr, #8
|
|
1:
|
|
ldrd_post r4, r5, r1, r2
|
|
subs lr, lr, #1
|
|
uxtb16 r6, r4
|
|
uxtb16 r4, r4, ror #8
|
|
uxtb16 r12, r5
|
|
uxtb16 r8, r5, ror #8
|
|
pld [r1, r2]
|
|
pkhbt r5, r6, r4, lsl #16
|
|
pkhtb r6, r4, r6, asr #16
|
|
pkhbt r7, r12, r8, lsl #16
|
|
pkhtb r12, r8, r12, asr #16
|
|
stm r0!, {r5,r6,r7,r12}
|
|
bgt 1b
|
|
|
|
pop {r4-r8, pc}
|
|
endfunc
|
|
|
|
function ff_diff_pixels_armv6, export=1
|
|
pld [r1, r3]
|
|
pld [r2, r3]
|
|
push {r4-r9, lr}
|
|
mov lr, #8
|
|
1:
|
|
ldrd_post r4, r5, r1, r3
|
|
ldrd_post r6, r7, r2, r3
|
|
uxtb16 r8, r4
|
|
uxtb16 r4, r4, ror #8
|
|
uxtb16 r9, r6
|
|
uxtb16 r6, r6, ror #8
|
|
pld [r1, r3]
|
|
ssub16 r9, r8, r9
|
|
ssub16 r6, r4, r6
|
|
uxtb16 r8, r5
|
|
uxtb16 r5, r5, ror #8
|
|
pld [r2, r3]
|
|
pkhbt r4, r9, r6, lsl #16
|
|
pkhtb r6, r6, r9, asr #16
|
|
uxtb16 r9, r7
|
|
uxtb16 r7, r7, ror #8
|
|
ssub16 r9, r8, r9
|
|
ssub16 r5, r5, r7
|
|
subs lr, lr, #1
|
|
pkhbt r8, r9, r5, lsl #16
|
|
pkhtb r9, r5, r9, asr #16
|
|
stm r0!, {r4,r6,r8,r9}
|
|
bgt 1b
|
|
|
|
pop {r4-r9, pc}
|
|
endfunc
|