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79 lines
2.1 KiB
79 lines
2.1 KiB
2 years ago
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/*
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* Copyright © 2022 Rémi Denis-Courmont.
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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/riscv/asm.S"
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func ff_shuffle_bytes_0321_rvv, zve32x
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addi t1, a0, 3
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addi t2, a0, 2
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addi t3, a0, 1
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1:
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srai a2, a2, 2
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li t4, 4
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2:
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vsetvli t0, a2, e8, m1, ta, ma
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sub a2, a2, t0
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vlse8.v v8, (a0), t4
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sh2add a0, t0, a0
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vlse8.v v9, (t1), t4
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sh2add t1, t0, t1
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vlse8.v v10, (t2), t4
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sh2add t2, t0, t2
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vlse8.v v11, (t3), t4
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sh2add t3, t0, t3
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vsseg4e8.v v8, (a1)
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sh2add a1, t0, a1
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bnez a2, 2b
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ret
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endfunc
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func ff_shuffle_bytes_2103_rvv, zve32x
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addi t1, a0, 1
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addi t2, a0, 0
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addi t3, a0, 3
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addi a0, a0, 2
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j 1b
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endfunc
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func ff_shuffle_bytes_1230_rvv, zve32x
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addi t1, a0, 2
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addi t2, a0, 3
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addi t3, a0, 0
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addi a0, a0, 1
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j 1b
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endfunc
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func ff_shuffle_bytes_3012_rvv, zve32x
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addi t1, a0, 0
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addi t2, a0, 1
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addi t3, a0, 2
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addi a0, a0, 3
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j 1b
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endfunc
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func ff_shuffle_bytes_3210_rvv, zve32x
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addi t1, a0, 2
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addi t2, a0, 1
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addi t3, a0, 0
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addi a0, a0, 3
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j 1b
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endfunc
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