| /* |
| * Copyright © 2022 Rémi Denis-Courmont. |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| |
| #include "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/riscv/cpu.h" |
| #include "libavcodec/lpc.h" |
| |
| void ff_lpc_apply_welch_window_rvv(const int32_t *, ptrdiff_t, double *); |
| void ff_lpc_compute_autocorr_rvv(const double *, ptrdiff_t, int, double *); |
| |
| av_cold void ff_lpc_init_riscv(LPCContext *c) |
| { |
| #if HAVE_RVV && (__riscv_xlen >= 64) |
| int flags = av_get_cpu_flags(); |
| |
| if ((flags & AV_CPU_FLAG_RVV_F64) && (flags & AV_CPU_FLAG_RVB_ADDR)) { |
| c->lpc_apply_welch_window = ff_lpc_apply_welch_window_rvv; |
| |
| if (ff_get_rv_vlenb() >= c->max_order) |
| c->lpc_compute_autocorr = ff_lpc_compute_autocorr_rvv; |
| } |
| #endif |
| } |