mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-24 00:02:52 +00:00
79 lines
5.7 KiB
ArmAsm
79 lines
5.7 KiB
ArmAsm
/*
|
|
* Copyright (c) 2016 Clément Bœsch <clement stupeflix.com>
|
|
* Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.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_yuv2planeX_8_neon, export=1
|
|
push {r4-r12, lr}
|
|
vpush {q4-q7}
|
|
ldr r4, [sp, #104] @ dstW
|
|
ldr r5, [sp, #108] @ dither
|
|
ldr r6, [sp, #112] @ offset
|
|
vld1.8 {d0}, [r5] @ load 8x8-bit dither values
|
|
cmp r6, #0 @ check offsetting which can be 0 or 3 only
|
|
beq 1f
|
|
vext.u8 d0, d0, d0, #3 @ honor offseting which can be 3 only
|
|
1: vmovl.u8 q0, d0 @ extend dither to 16-bit
|
|
vshll.u16 q1, d0, #12 @ extend dither to 32-bit with left shift by 12 (part 1)
|
|
vshll.u16 q2, d1, #12 @ extend dither to 32-bit with left shift by 12 (part 2)
|
|
mov r7, #0 @ i = 0
|
|
2: vmov.u8 q3, q1 @ initialize accumulator with dithering values (part 1)
|
|
vmov.u8 q4, q2 @ initialize accumulator with dithering values (part 2)
|
|
mov r8, r1 @ tmpFilterSize = filterSize
|
|
mov r9, r2 @ srcp
|
|
mov r10, r0 @ filterp
|
|
3: ldr r11, [r9], #4 @ get pointer @ src[j]
|
|
ldr r12, [r9], #4 @ get pointer @ src[j+1]
|
|
add r11, r11, r7, lsl #1 @ &src[j][i]
|
|
add r12, r12, r7, lsl #1 @ &src[j+1][i]
|
|
vld1.16 {q5}, [r11] @ read 8x16-bit @ src[j ][i + {0..7}]: A,B,C,D,E,F,G,H
|
|
vld1.16 {q6}, [r12] @ read 8x16-bit @ src[j+1][i + {0..7}]: I,J,K,L,M,N,O,P
|
|
ldr r11, [r10], #4 @ read 2x16-bit coeffs (X, Y) at (filter[j], filter[j+1])
|
|
vmov.16 q7, q5 @ copy 8x16-bit @ src[j ][i + {0..7}] for following inplace zip instruction
|
|
vmov.16 q8, q6 @ copy 8x16-bit @ src[j+1][i + {0..7}] for following inplace zip instruction
|
|
vzip.16 q7, q8 @ A,I,B,J,C,K,D,L,E,M,F,N,G,O,H,P
|
|
vdup.32 q15, r11 @ X,Y,X,Y,X,Y,X,Y
|
|
vmull.s16 q9, d14, d30 @ A*X,I*Y,B*X,J*Y
|
|
vmull.s16 q10, d15, d31 @ C*X,K*Y,D*X,L*Y
|
|
vmull.s16 q11, d16, d30 @ E*X,M*Y,F*X,N*Y
|
|
vmull.s16 q12, d17, d31 @ G*X,O*Y,H*X,P*Y
|
|
vpadd.s32 d10, d18, d19 @ A*X+I*Y,B*X+J*Y
|
|
vpadd.s32 d11, d20, d21 @ C*X+K*Y,D*X+L*Y
|
|
vpadd.s32 d12, d22, d23 @ E*X+M*Y,F*X+N*Y
|
|
vpadd.s32 d13, d24, d25 @ G*X+O*Y,H*X+P*Y
|
|
vadd.s32 q3, q5 @ update val accumulator (part 1)
|
|
vadd.s32 q4, q6 @ update val accumulator (part 2)
|
|
subs r8, #2 @ tmpFilterSize -= 2
|
|
bgt 3b @ loop until filterSize is consumed
|
|
vshr.s32 q3, q3, #19 @ val>>19 (part 1)
|
|
vshr.s32 q4, q4, #19 @ val>>19 (part 2)
|
|
vqmovun.s32 d6, q3 @ clip16(val>>19) (part 1)
|
|
vqmovun.s32 d7, q4 @ clip16(val>>19) (part 2)
|
|
vqmovn.u16 d6, q3 @ merge part 1 and part 2
|
|
vst1.8 {d6}, [r3]! @ write destination
|
|
add r7, #8 @ i += 8
|
|
subs r4, r4, #8 @ dstW -= 8
|
|
bgt 2b @ loop until width is consumed
|
|
vpop {q4-q7}
|
|
pop {r4-r12, lr}
|
|
mov pc, lr
|
|
endfunc
|