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58 lines
1.9 KiB
58 lines
1.9 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_opus_postfilter_rvv_128, zve32f
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addi a1, a1, 2
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slli a1, a1, 2
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lw t1, 4(a2)
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vsetivli zero, 3, e32, m1, ta, ma
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vle32.v v24, (a2)
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sub a1, a0, a1 // a1 = &x4 = &data[-(period + 2)]
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vsetivli zero, 5, e32, m2, ta, ma
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vslide1up.vx v8, v24, t1
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lw t2, 8(a2)
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vle32.v v16, (a1)
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vslide1up.vx v24, v8, t2 // v24 = { g[2], g[1], g[0], g[1], g[2] }
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2:
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vsetvli t0, a3, e32, m2, ta, ma
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vle32.v v0, (a0)
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sub a3, a3, t0
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3:
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vsetivli zero, 5, e32, m2, ta, ma
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lw t2, 20(a1)
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vfmul.vv v8, v24, v16
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addi a0, a0, 4
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vslide1down.vx v16, v16, t2
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addi a1, a1, 4
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vfredusum.vs v0, v8, v0
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vsetvli zero, t0, e32, m2, ta, ma
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vmv.x.s t1, v0
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addi t0, t0, -1
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vslide1down.vx v0, v0, zero
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sw t1, -4(a0)
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bnez t0, 3b
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bnez a3, 2b
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ret
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endfunc
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