configure: Add -D_CRT_NONSTDC_NO_WARNINGS when building with msvc
[ffmpeg.git] / libavcodec / x86 / fft_init.c
1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * Libav is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with Libav; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18
19 #include "config.h"
20 #include "libavutil/attributes.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/x86/cpu.h"
23 #include "fft.h"
24
25 av_cold void ff_fft_init_x86(FFTContext *s)
26 {
27     int cpu_flags = av_get_cpu_flags();
28
29 #if ARCH_X86_32
30     if (EXTERNAL_AMD3DNOW(cpu_flags)) {
31         /* 3DNow! for K6-2/3 */
32         s->imdct_calc = ff_imdct_calc_3dnow;
33         s->imdct_half = ff_imdct_half_3dnow;
34         s->fft_calc   = ff_fft_calc_3dnow;
35     }
36     if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
37         /* 3DNowEx for K7 */
38         s->imdct_calc = ff_imdct_calc_3dnowext;
39         s->imdct_half = ff_imdct_half_3dnowext;
40         s->fft_calc   = ff_fft_calc_3dnowext;
41     }
42 #endif
43     if (EXTERNAL_SSE(cpu_flags)) {
44         /* SSE for P3/P4/K8 */
45         s->imdct_calc  = ff_imdct_calc_sse;
46         s->imdct_half  = ff_imdct_half_sse;
47         s->fft_permute = ff_fft_permute_sse;
48         s->fft_calc    = ff_fft_calc_sse;
49         s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
50     }
51     if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) {
52         /* AVX for SB */
53         s->imdct_half      = ff_imdct_half_avx;
54         s->fft_calc        = ff_fft_calc_avx;
55         s->fft_permutation = FF_FFT_PERM_AVX;
56     }
57 }