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50 lines
2.0 KiB
50 lines
2.0 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 <stdint.h> |
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#include "libavutil/attributes.h" |
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#include "libavutil/cpu.h" |
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#include "libavcodec/avcodec.h" |
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#include "libavcodec/alacdsp.h" |
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void ff_alac_decorrelate_stereo_rvv(int32_t *buffer[2], int nb_samples, |
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int decorr_shift, int decorr_left_weight); |
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void ff_alac_append_extra_bits_mono_rvv(int32_t *buffer[2], |
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int32_t *extra_bits_buf[2], |
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int extra_bits, int channels, |
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int nb_samples); |
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void ff_alac_append_extra_bits_stereo_rvv(int32_t *buffer[2], |
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int32_t *extra_bits_buf[2], |
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int extra_bits, int channels, |
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int nb_samples); |
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av_cold void ff_alacdsp_init_riscv(ALACDSPContext *c) |
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{ |
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#if HAVE_RVV && (__riscv_xlen == 64) |
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int flags = av_get_cpu_flags(); |
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if (flags & AV_CPU_FLAG_RVV_I32) { |
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c->decorrelate_stereo = ff_alac_decorrelate_stereo_rvv; |
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c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_rvv; |
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c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_rvv; |
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} |
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#endif |
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}
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