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57 lines
1.9 KiB
57 lines
1.9 KiB
/* |
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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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