mirror of https://git.ffmpeg.org/ffmpeg.git
47 lines
1.5 KiB
ArmAsm
47 lines
1.5 KiB
ArmAsm
/*
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* Copyright © 2024 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_pix_sum_rvv, zve64x, b
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lpad 0
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vsetivli t0, 16, e16, m1, ta, ma
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slli t1, t0, 3
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vlsseg2e64.v v8, (a0), a1 # poor man's vlse128.v
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li t2, 16
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vmv.s.x v1, zero
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vsetvli zero, t1, e8, m4, ta, ma
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vwaddu.vv v16, v8, v12
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beq t0, t2, 2f # VLEN >= 256
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1:
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sh3add a0, a1, a0
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vsetivli zero, 8, e16, m1, ta, ma
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vlsseg2e64.v v8, (a0), a1
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vsetvli zero, t1, e8, m4, ta, ma
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vwaddu.wv v16, v16, v8
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vwaddu.wv v16, v16, v12
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2:
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vsetvli zero, zero, e16, m8, ta, ma
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vredsum.vs v1, v16, v1
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vmv.x.s a0, v1
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zext.h a0, a0
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ret
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endfunc
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