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FFmpeg/libavcodec/arm/dsputil_armv6.S

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/*
* Copyright (c) 2009 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 "libavutil/arm/asm.S"
function ff_add_pixels_clamped_armv6, export=1
push {r4-r8,lr}
mov r3, #8
1:
ldm r0!, {r4,r5,r12,lr}
ldrd r6, r7, [r1]
pkhbt r8, r4, r5, lsl #16
pkhtb r5, r5, r4, asr #16
pkhbt r4, r12, lr, lsl #16
pkhtb lr, lr, r12, asr #16
pld [r1, r2]
uxtab16 r8, r8, r6
uxtab16 r5, r5, r6, ror #8
uxtab16 r4, r4, r7
uxtab16 lr, lr, r7, ror #8
usat16 r8, #8, r8
usat16 r5, #8, r5
usat16 r4, #8, r4
usat16 lr, #8, lr
orr r6, r8, r5, lsl #8
orr r7, r4, lr, lsl #8
subs r3, r3, #1
strd_post r6, r7, r1, r2
bgt 1b
pop {r4-r8,pc}
endfunc
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
function ff_pix_abs16_armv6, export=1
ldr r0, [sp]
push {r4-r9, lr}
mov r12, #0
mov lr, #0
ldm r1, {r4-r7}
ldr r8, [r2]
1:
ldr r9, [r2, #4]
pld [r1, r3]
usada8 r12, r4, r8, r12
ldr r8, [r2, #8]
pld [r2, r3]
usada8 lr, r5, r9, lr
ldr r9, [r2, #12]
usada8 r12, r6, r8, r12
subs r0, r0, #1
usada8 lr, r7, r9, lr
beq 2f
add r1, r1, r3
ldm r1, {r4-r7}
add r2, r2, r3
ldr r8, [r2]
b 1b
2:
add r0, r12, lr
pop {r4-r9, pc}
endfunc
function ff_pix_abs16_x2_armv6, export=1
ldr r12, [sp]
push {r4-r11, lr}
mov r0, #0
mov lr, #1
orr lr, lr, lr, lsl #8
orr lr, lr, lr, lsl #16
1:
ldr r8, [r2]
ldr r9, [r2, #4]
lsr r10, r8, #8
ldr r4, [r1]
lsr r6, r9, #8
orr r10, r10, r9, lsl #24
ldr r5, [r2, #8]
eor r11, r8, r10
uhadd8 r7, r8, r10
orr r6, r6, r5, lsl #24
and r11, r11, lr
uadd8 r7, r7, r11
ldr r8, [r1, #4]
usada8 r0, r4, r7, r0
eor r7, r9, r6
lsr r10, r5, #8
and r7, r7, lr
uhadd8 r4, r9, r6
ldr r6, [r2, #12]
uadd8 r4, r4, r7
pld [r1, r3]
orr r10, r10, r6, lsl #24
usada8 r0, r8, r4, r0
ldr r4, [r1, #8]
eor r11, r5, r10
ldrb r7, [r2, #16]
and r11, r11, lr
uhadd8 r8, r5, r10
ldr r5, [r1, #12]
uadd8 r8, r8, r11
pld [r2, r3]
lsr r10, r6, #8
usada8 r0, r4, r8, r0
orr r10, r10, r7, lsl #24
subs r12, r12, #1
eor r11, r6, r10
add r1, r1, r3
uhadd8 r9, r6, r10
and r11, r11, lr
uadd8 r9, r9, r11
add r2, r2, r3
usada8 r0, r5, r9, r0
bgt 1b
pop {r4-r11, pc}
endfunc
.macro usad_y2 p0, p1, p2, p3, n0, n1, n2, n3
ldr \n0, [r2]
eor \n1, \p0, \n0
uhadd8 \p0, \p0, \n0
and \n1, \n1, lr
ldr \n2, [r1]
uadd8 \p0, \p0, \n1
ldr \n1, [r2, #4]
usada8 r0, \p0, \n2, r0
pld [r1, r3]
eor \n3, \p1, \n1
uhadd8 \p1, \p1, \n1
and \n3, \n3, lr
ldr \p0, [r1, #4]
uadd8 \p1, \p1, \n3
ldr \n2, [r2, #8]
usada8 r0, \p1, \p0, r0
pld [r2, r3]
eor \p0, \p2, \n2
uhadd8 \p2, \p2, \n2
and \p0, \p0, lr
ldr \p1, [r1, #8]
uadd8 \p2, \p2, \p0
ldr \n3, [r2, #12]
usada8 r0, \p2, \p1, r0
eor \p1, \p3, \n3
uhadd8 \p3, \p3, \n3
and \p1, \p1, lr
ldr \p0, [r1, #12]
uadd8 \p3, \p3, \p1
add r1, r1, r3
usada8 r0, \p3, \p0, r0
add r2, r2, r3
.endm
function ff_pix_abs16_y2_armv6, export=1
pld [r1]
pld [r2]
ldr r12, [sp]
push {r4-r11, lr}
mov r0, #0
mov lr, #1
orr lr, lr, lr, lsl #8
orr lr, lr, lr, lsl #16
ldr r4, [r2]
ldr r5, [r2, #4]
ldr r6, [r2, #8]
ldr r7, [r2, #12]
add r2, r2, r3
1:
usad_y2 r4, r5, r6, r7, r8, r9, r10, r11
subs r12, r12, #2
usad_y2 r8, r9, r10, r11, r4, r5, r6, r7
bgt 1b
pop {r4-r11, pc}
endfunc
function ff_pix_abs8_armv6, export=1
pld [r2, r3]
ldr r12, [sp]
push {r4-r9, lr}
mov r0, #0
mov lr, #0
ldrd_post r4, r5, r1, r3
1:
subs r12, r12, #2
ldr r7, [r2, #4]
ldr_post r6, r2, r3
ldrd_post r8, r9, r1, r3
usada8 r0, r4, r6, r0
pld [r2, r3]
usada8 lr, r5, r7, lr
ldr r7, [r2, #4]
ldr_post r6, r2, r3
beq 2f
ldrd_post r4, r5, r1, r3
usada8 r0, r8, r6, r0
pld [r2, r3]
usada8 lr, r9, r7, lr
b 1b
2:
usada8 r0, r8, r6, r0
usada8 lr, r9, r7, lr
add r0, r0, lr
pop {r4-r9, pc}
endfunc
function ff_sse16_armv6, export=1
ldr r12, [sp]
push {r4-r9, lr}
mov r0, #0
1:
ldrd r4, r5, [r1]
ldr r8, [r2]
uxtb16 lr, r4
uxtb16 r4, r4, ror #8
uxtb16 r9, r8
uxtb16 r8, r8, ror #8
ldr r7, [r2, #4]
usub16 lr, lr, r9
usub16 r4, r4, r8
smlad r0, lr, lr, r0
uxtb16 r6, r5
uxtb16 lr, r5, ror #8
uxtb16 r8, r7
uxtb16 r9, r7, ror #8
smlad r0, r4, r4, r0
ldrd r4, r5, [r1, #8]
usub16 r6, r6, r8
usub16 r8, lr, r9
ldr r7, [r2, #8]
smlad r0, r6, r6, r0
uxtb16 lr, r4
uxtb16 r4, r4, ror #8
uxtb16 r9, r7
uxtb16 r7, r7, ror #8
smlad r0, r8, r8, r0
ldr r8, [r2, #12]
usub16 lr, lr, r9
usub16 r4, r4, r7
smlad r0, lr, lr, r0
uxtb16 r6, r5
uxtb16 r5, r5, ror #8
uxtb16 r9, r8
uxtb16 r8, r8, ror #8
smlad r0, r4, r4, r0
usub16 r6, r6, r9
usub16 r5, r5, r8
smlad r0, r6, r6, r0
add r1, r1, r3
add r2, r2, r3
subs r12, r12, #1
smlad r0, r5, r5, r0
bgt 1b
pop {r4-r9, pc}
endfunc
function ff_pix_norm1_armv6, export=1
push {r4-r6, lr}
mov r12, #16
mov lr, #0
1:
ldm r0, {r2-r5}
uxtb16 r6, r2
uxtb16 r2, r2, ror #8
smlad lr, r6, r6, lr
uxtb16 r6, r3
smlad lr, r2, r2, lr
uxtb16 r3, r3, ror #8
smlad lr, r6, r6, lr
uxtb16 r6, r4
smlad lr, r3, r3, lr
uxtb16 r4, r4, ror #8
smlad lr, r6, r6, lr
uxtb16 r6, r5
smlad lr, r4, r4, lr
uxtb16 r5, r5, ror #8
smlad lr, r6, r6, lr
subs r12, r12, #1
add r0, r0, r1
smlad lr, r5, r5, lr
bgt 1b
mov r0, lr
pop {r4-r6, pc}
endfunc
function ff_pix_sum_armv6, export=1
push {r4-r7, lr}
mov r12, #16
mov r2, #0
mov r3, #0
mov lr, #0
ldr r4, [r0]
1:
subs r12, r12, #1
ldr r5, [r0, #4]
usada8 r2, r4, lr, r2
ldr r6, [r0, #8]
usada8 r3, r5, lr, r3
ldr r7, [r0, #12]
usada8 r2, r6, lr, r2
beq 2f
ldr_pre r4, r0, r1
usada8 r3, r7, lr, r3
bgt 1b
2:
usada8 r3, r7, lr, r3
add r0, r2, r3
pop {r4-r7, pc}
endfunc