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44 lines
1.5 KiB
44 lines
1.5 KiB
1 year ago
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/*
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* Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS).
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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_ssd_int8_vs_int16_rvv, zve32x
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vsetvli t0, zero, e32, m8, ta, ma
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vmv.v.x v24, zero
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1:
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vsetvli t0, a2, e8, m2, tu, ma
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vle16.v v8, (a1)
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sub a2, a2, t0
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vle8.v v0, (a0)
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vwsub.wv v16, v8, v0
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vsetvli zero, zero, e16, m4, tu, ma
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add a0, a0, t0
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vwmacc.vv v24, v16, v16
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sh1add a1, t0, a1
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bnez a2, 1b
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vsetvli zero, zero, e32, m8, ta, ma
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vmv.s.x v0, zero
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vredsum.vs v0, v24, v0
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vmv.x.s a0, v0
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ret
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endfunc
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