Imported Upstream version 6.1
[platform/upstream/ffmpeg.git] / libavcodec / riscv / alacdsp_init.c
1 /*
2  * Copyright © 2022 Rémi Denis-Courmont.
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 #include <stdint.h>
22
23 #include "libavutil/attributes.h"
24 #include "libavutil/cpu.h"
25 #include "libavcodec/avcodec.h"
26 #include "libavcodec/alacdsp.h"
27
28 void ff_alac_decorrelate_stereo_rvv(int32_t *buffer[2], int nb_samples,
29                                     int decorr_shift, int decorr_left_weight);
30 void ff_alac_append_extra_bits_mono_rvv(int32_t *buffer[2],
31                                         int32_t *extra_bits_buf[2],
32                                         int extra_bits, int channels,
33                                         int nb_samples);
34 void ff_alac_append_extra_bits_stereo_rvv(int32_t *buffer[2],
35                                           int32_t *extra_bits_buf[2],
36                                           int extra_bits, int channels,
37                                           int nb_samples);
38
39 av_cold void ff_alacdsp_init_riscv(ALACDSPContext *c)
40 {
41 #if HAVE_RVV && (__riscv_xlen == 64)
42     int flags = av_get_cpu_flags();
43
44     if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
45         c->decorrelate_stereo = ff_alac_decorrelate_stereo_rvv;
46         c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_rvv;
47         c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_rvv;
48     }
49 #endif
50 }