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- ;******************************************************************************
- ;* 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
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