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616fdeaea3
There is no known (real) hardware with V and without the complete B extension. B was indeed required in the RISC-V application profile from 2022, earlier than V. There should not be any relevant hardware in the future either. In practice, different R-V Vector optimisations in FFmpeg already depend on every constituent of the B extension anyhow, so it would not work well.
66 lines
2.7 KiB
C
66 lines
2.7 KiB
C
/*
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* Copyright © 2023 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/sbrdsp.h"
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void ff_sbr_sum64x5_rvv(float *z);
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float ff_sbr_sum_square_rvv(float (*x)[2], int n);
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void ff_sbr_autocorrelate_rvv(const float x[40][2], float phi[3][2][2]);
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void ff_sbr_hf_gen_rvv(float (*X_high)[2], const float (*X_low)[2],
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const float alpha0[2], const float alpha1[2],
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float bw, int start, int end);
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void ff_sbr_hf_g_filt_rvv(float (*Y)[2], const float (*X_high)[40][2],
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const float *g_filt, int m_max, intptr_t ixh);
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void ff_sbr_hf_apply_noise_0_rvv(float (*Y)[2], const float *s,
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const float *f, int n, int kx, int max);
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void ff_sbr_hf_apply_noise_1_rvv(float (*Y)[2], const float *s,
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const float *f, int n, int kx, int max);
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void ff_sbr_hf_apply_noise_2_rvv(float (*Y)[2], const float *s,
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const float *f, int n, int kx, int max);
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void ff_sbr_hf_apply_noise_3_rvv(float (*Y)[2], const float *s,
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const float *f, int n, int kx, int max);
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av_cold void ff_sbrdsp_init_riscv(SBRDSPContext *c)
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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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if (flags & AV_CPU_FLAG_RVB) {
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c->sum64x5 = ff_sbr_sum64x5_rvv;
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c->sum_square = ff_sbr_sum_square_rvv;
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c->hf_gen = ff_sbr_hf_gen_rvv;
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c->hf_g_filt = ff_sbr_hf_g_filt_rvv;
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if (ff_get_rv_vlenb() <= 32) {
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c->hf_apply_noise[0] = ff_sbr_hf_apply_noise_0_rvv;
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c->hf_apply_noise[2] = ff_sbr_hf_apply_noise_2_rvv;
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c->hf_apply_noise[1] = ff_sbr_hf_apply_noise_1_rvv;
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c->hf_apply_noise[3] = ff_sbr_hf_apply_noise_3_rvv;
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}
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}
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c->autocorrelate = ff_sbr_autocorrelate_rvv;
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}
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#endif
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}
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