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adc87a5f7c
This uses a more traditional approach allowing up processing of up to period minus two elements per iteration. This also allows the algorithm to work for all and any vector length. As the T-Head C908 device under test can load 16 elements loop, there is unsurprisingly a little performance drop when the period is minimal and the parallelism is capped at 13 elements: Before: postfilter_15_c: 21222.2 postfilter_15_rvv_f32: 22007.7 postfilter_512_c: 20189.7 postfilter_512_rvv_f32: 22004.2 postfilter_1022_c: 20189.7 postfilter_1022_rvv_f32: 22004.2 After: postfilter_15_c: 20189.5 postfilter_15_rvv_f32: 7057.2 postfilter_512_c: 20189.5 postfilter_512_rvv_f32: 5667.2 postfilter_1022_c: 20192.7 postfilter_1022_rvv_f32: 5667.2
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*
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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/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/riscv/cpu.h"
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#include "libavcodec/opusdsp.h"
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void ff_opus_postfilter_rvv(float *data, int period, float *g, int len);
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av_cold void ff_opus_dsp_init_riscv(OpusDSP *d)
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{
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#if HAVE_RVV
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int flags = av_get_cpu_flags();
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if ((flags & AV_CPU_FLAG_RVV_F32) && (flags & AV_CPU_FLAG_RVB_ADDR) &&
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(flags & AV_CPU_FLAG_RVB_BASIC))
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d->postfilter = ff_opus_postfilter_rvv;
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#endif
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}
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