FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/x86/fft_init.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 13 14 92.9%
Branches: 8 10 80.0%

Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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
21 #include "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/cpu.h"
24
25 #include "fft.h"
26
27 3478 av_cold void ff_fft_init_x86(FFTContext *s)
28 {
29 3478 int cpu_flags = av_get_cpu_flags();
30
31
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3478 if (s->nbits > 16)
32 return;
33
34 #if ARCH_X86_32
35 if (EXTERNAL_AMD3DNOW(cpu_flags)) {
36 s->imdct_calc = ff_imdct_calc_3dnow;
37 s->imdct_half = ff_imdct_half_3dnow;
38 s->fft_calc = ff_fft_calc_3dnow;
39 }
40
41 if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
42 s->imdct_calc = ff_imdct_calc_3dnowext;
43 s->imdct_half = ff_imdct_half_3dnowext;
44 s->fft_calc = ff_fft_calc_3dnowext;
45 }
46 #endif /* ARCH_X86_32 */
47
48
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3478 if (EXTERNAL_SSE(cpu_flags)) {
49 492 s->imdct_calc = ff_imdct_calc_sse;
50 492 s->imdct_half = ff_imdct_half_sse;
51 492 s->fft_permute = ff_fft_permute_sse;
52 492 s->fft_calc = ff_fft_calc_sse;
53 492 s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
54 }
55
56
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3478 if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) {
57 360 s->imdct_half = ff_imdct_half_avx;
58 360 s->fft_calc = ff_fft_calc_avx;
59 360 s->fft_permutation = FF_FFT_PERM_AVX;
60 }
61 }
62