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79 lines
2.5 KiB
79 lines
2.5 KiB
/* |
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* Copyright (c) 2020 Martin Storsjo |
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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/aarch64/asm.S" |
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// void ff_interleave_bytes_neon(const uint8_t *src1, const uint8_t *src2, |
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// uint8_t *dest, int width, int height, |
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// int src1Stride, int src2Stride, int dstStride); |
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function ff_interleave_bytes_neon, export=1 |
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sub w5, w5, w3 |
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sub w6, w6, w3 |
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sub w7, w7, w3, lsl #1 |
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1: |
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ands w8, w3, #0xfffffff0 // & ~15 |
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b.eq 3f |
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2: |
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ld1 {v0.16b}, [x0], #16 |
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ld1 {v1.16b}, [x1], #16 |
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subs w8, w8, #16 |
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st2 {v0.16b, v1.16b}, [x2], #32 |
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b.gt 2b |
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tst w3, #15 |
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b.eq 9f |
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3: |
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tst w3, #8 |
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b.eq 4f |
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ld1 {v0.8b}, [x0], #8 |
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ld1 {v1.8b}, [x1], #8 |
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st2 {v0.8b, v1.8b}, [x2], #16 |
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4: |
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tst w3, #4 |
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b.eq 5f |
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ld1 {v0.s}[0], [x0], #4 |
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ld1 {v1.s}[0], [x1], #4 |
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zip1 v0.8b, v0.8b, v1.8b |
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st1 {v0.8b}, [x2], #8 |
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5: |
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ands w8, w3, #3 |
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b.eq 9f |
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6: |
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ldrb w9, [x0], #1 |
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ldrb w10, [x1], #1 |
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subs w8, w8, #1 |
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bfi w9, w10, #8, #8 |
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strh w9, [x2], #2 |
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b.gt 6b |
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9: |
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subs w4, w4, #1 |
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b.eq 0f |
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add x0, x0, w5, sxtw |
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add x1, x1, w6, sxtw |
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add x2, x2, w7, sxtw |
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b 1b |
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0: |
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ret |
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endfunc
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