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81 lines
2.4 KiB
81 lines
2.4 KiB
7 years ago
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;******************************************************************************
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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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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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