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2ba45a60 DM |
1 | /* |
2 | * linear least squares model | |
3 | * | |
4 | * Copyright (c) 2013 Loren Merritt | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include "libavutil/lls.h" | |
24 | #include "libavutil/x86/cpu.h" | |
25 | ||
f6fa7814 DM |
26 | void ff_update_lls_sse2(LLSModel *m, const double *var); |
27 | void ff_update_lls_avx(LLSModel *m, const double *var); | |
28 | double ff_evaluate_lls_sse2(LLSModel *m, const double *var, int order); | |
2ba45a60 DM |
29 | |
30 | av_cold void ff_init_lls_x86(LLSModel *m) | |
31 | { | |
32 | int cpu_flags = av_get_cpu_flags(); | |
33 | if (EXTERNAL_SSE2(cpu_flags)) { | |
34 | m->update_lls = ff_update_lls_sse2; | |
35 | if (m->indep_count >= 4) | |
36 | m->evaluate_lls = ff_evaluate_lls_sse2; | |
37 | } | |
38 | if (EXTERNAL_AVX(cpu_flags)) { | |
39 | m->update_lls = ff_update_lls_avx; | |
40 | } | |
41 | } |