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https://github.com/FFmpeg/FFmpeg.git
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97d34befea
This adds a variant of the postfilter for use with 256-bit vectors. As a single vector is then large enough to perform the scalar product, the group multipler is reduced to just one at run-time. The different vector type is passed via register. Unfortunately, there is no VSETIVL instruction, so the constant vector size (5) also needs to be passed via a register.
47 lines
1.5 KiB
C
47 lines
1.5 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_128(float *data, int period, float *g, int len);
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void ff_opus_postfilter_rvv_256(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)
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switch (ff_get_rv_vlenb()) {
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case 16:
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d->postfilter = ff_opus_postfilter_rvv_128;
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break;
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case 32:
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d->postfilter = ff_opus_postfilter_rvv_256;
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break;
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}
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#endif
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}
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