mirror of https://git.ffmpeg.org/ffmpeg.git
87 lines
2.6 KiB
NASM
87 lines
2.6 KiB
NASM
;******************************************************************************
|
|
;* Copyright Nick Kurshev
|
|
;* Copyright Michael (michaelni@gmx.at)
|
|
;* Copyright 2018 Jokyo Images
|
|
;*
|
|
;* 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/x86/x86util.asm"
|
|
|
|
SECTION_RODATA
|
|
|
|
pb_shuffle2103: db 2, 1, 0, 3, 6, 5, 4, 7, 10, 9, 8, 11, 14, 13, 12, 15
|
|
pb_shuffle0321: db 0, 3, 2, 1, 4, 7, 6, 5, 8, 11, 10, 9, 12, 15, 14, 13
|
|
pb_shuffle1230: db 1, 2, 3, 0, 5, 6, 7, 4, 9, 10, 11, 8, 13, 14, 15, 12
|
|
pb_shuffle3012: db 3, 0, 1, 2, 7, 4, 5, 6, 11, 8, 9, 10, 15, 12, 13, 14
|
|
pb_shuffle3210: db 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
|
|
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; shuffle_bytes_## (const uint8_t *src, uint8_t *dst, int src_size)
|
|
;------------------------------------------------------------------------------
|
|
; %1-4 index shuffle
|
|
%macro SHUFFLE_BYTES 4
|
|
cglobal shuffle_bytes_%1%2%3%4, 3, 5, 2, src, dst, w, tmp, x
|
|
VBROADCASTI128 m0, [pb_shuffle%1%2%3%4]
|
|
movsxdifnidn wq, wd
|
|
mov xq, wq
|
|
|
|
add srcq, wq
|
|
add dstq, wq
|
|
neg wq
|
|
|
|
;calc scalar loop
|
|
and xq, mmsize-4
|
|
je .loop_simd
|
|
|
|
.loop_scalar:
|
|
mov tmpb, [srcq + wq + %1]
|
|
mov [dstq+wq + 0], tmpb
|
|
mov tmpb, [srcq + wq + %2]
|
|
mov [dstq+wq + 1], tmpb
|
|
mov tmpb, [srcq + wq + %3]
|
|
mov [dstq+wq + 2], tmpb
|
|
mov tmpb, [srcq + wq + %4]
|
|
mov [dstq+wq + 3], tmpb
|
|
add wq, 4
|
|
sub xq, 4
|
|
jg .loop_scalar
|
|
|
|
;check if src_size < mmsize
|
|
cmp wq, 0
|
|
jge .end
|
|
|
|
.loop_simd:
|
|
movu m1, [srcq+wq]
|
|
pshufb m1, m0
|
|
movu [dstq+wq], m1
|
|
add wq, mmsize
|
|
jl .loop_simd
|
|
|
|
.end:
|
|
RET
|
|
%endmacro
|
|
|
|
INIT_XMM ssse3
|
|
SHUFFLE_BYTES 2, 1, 0, 3
|
|
SHUFFLE_BYTES 0, 3, 2, 1
|
|
SHUFFLE_BYTES 1, 2, 3, 0
|
|
SHUFFLE_BYTES 3, 0, 1, 2
|
|
SHUFFLE_BYTES 3, 2, 1, 0
|