mirror of https://git.ffmpeg.org/ffmpeg.git
47 lines
1.4 KiB
ArmAsm
47 lines
1.4 KiB
ArmAsm
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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 "config.h"
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#include "libavutil/riscv/asm.S"
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#if (__riscv_xlen == 64)
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func ff_alac_decorrelate_stereo_rvv, zve32x
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ld a4, 8(a0)
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ld a0, 0(a0)
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1:
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vsetvli t0, a1, e32, m1, ta, ma
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vle32.v v24, (a4)
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sub a1, a1, t0
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vle32.v v16, (a0)
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vmul.vx v8, v24, a3
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vadd.vv v24, v24, v16
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vsra.vx v8, v8, a2
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vsub.vv v16, v16, v8
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vsub.vv v24, v24, v8
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vse32.v v16, (a4)
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sh2add a4, t0, a4
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vse32.v v24, (a0)
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sh2add a0, t0, a0
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bnez a1, 1b
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ret
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endfunc
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#endif
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