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86 lines
2.6 KiB
86 lines
2.6 KiB
;****************************************************************************** |
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;* Copyright Nick Kurshev |
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;* Copyright Michael (michaelni@gmx.at) |
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;* Copyright 2018 Jokyo Images |
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;* |
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;* This file is part of FFmpeg. |
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;* |
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;* FFmpeg is free software; you can redistribute it and/or |
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;* modify it under the terms of the GNU Lesser General Public |
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;* License as published by the Free Software Foundation; either |
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;* version 2.1 of the License, or (at your option) any later version. |
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;* |
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;* FFmpeg is distributed in the hope that it will be useful, |
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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;* Lesser General Public License for more details. |
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;* |
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;* You should have received a copy of the GNU Lesser General Public |
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;* License along with FFmpeg; if not, write to the Free Software |
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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;****************************************************************************** |
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%include "libavutil/x86/x86util.asm" |
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SECTION_RODATA |
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pb_shuffle2103: db 2, 1, 0, 3, 6, 5, 4, 7, 10, 9, 8, 11, 14, 13, 12, 15 |
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pb_shuffle0321: db 0, 3, 2, 1, 4, 7, 6, 5, 8, 11, 10, 9, 12, 15, 14, 13 |
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pb_shuffle1230: db 1, 2, 3, 0, 5, 6, 7, 4, 9, 10, 11, 8, 13, 14, 15, 12 |
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pb_shuffle3012: db 3, 0, 1, 2, 7, 4, 5, 6, 11, 8, 9, 10, 15, 12, 13, 14 |
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pb_shuffle3210: db 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12 |
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SECTION .text |
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;------------------------------------------------------------------------------ |
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; shuffle_bytes_## (const uint8_t *src, uint8_t *dst, int src_size) |
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;------------------------------------------------------------------------------ |
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; %1-4 index shuffle |
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%macro SHUFFLE_BYTES 4 |
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cglobal shuffle_bytes_%1%2%3%4, 3, 5, 2, src, dst, w, tmp, x |
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VBROADCASTI128 m0, [pb_shuffle%1%2%3%4] |
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movsxdifnidn wq, wd |
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mov xq, wq |
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add srcq, wq |
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add dstq, wq |
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neg wq |
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;calc scalar loop |
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and xq, mmsize-4 |
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je .loop_simd |
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.loop_scalar: |
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mov tmpb, [srcq + wq + %1] |
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mov [dstq+wq + 0], tmpb |
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mov tmpb, [srcq + wq + %2] |
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mov [dstq+wq + 1], tmpb |
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mov tmpb, [srcq + wq + %3] |
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mov [dstq+wq + 2], tmpb |
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mov tmpb, [srcq + wq + %4] |
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mov [dstq+wq + 3], tmpb |
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add wq, 4 |
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sub xq, 4 |
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jg .loop_scalar |
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;check if src_size < mmsize |
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cmp wq, 0 |
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jge .end |
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.loop_simd: |
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movu m1, [srcq+wq] |
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pshufb m1, m0 |
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movu [dstq+wq], m1 |
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add wq, mmsize |
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jl .loop_simd |
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.end: |
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RET |
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%endmacro |
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INIT_XMM ssse3 |
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SHUFFLE_BYTES 2, 1, 0, 3 |
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SHUFFLE_BYTES 0, 3, 2, 1 |
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SHUFFLE_BYTES 1, 2, 3, 0 |
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SHUFFLE_BYTES 3, 0, 1, 2 |
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SHUFFLE_BYTES 3, 2, 1, 0
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