FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/sinewin_fixed_tablegen.h
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 9 9 100.0%
Branches: 2 2 100.0%

Line Branch Exec Source
1 /*
2 * Header file for hardcoded sine windows
3 *
4 * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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 #ifndef AVCODEC_SINEWIN_FIXED_TABLEGEN_H
24 #define AVCODEC_SINEWIN_FIXED_TABLEGEN_H
25
26 #ifdef BUILD_TABLES
27 #undef DECLARE_ALIGNED
28 #define DECLARE_ALIGNED(align, type, name) type name
29 #else
30 #include "libavutil/mem_internal.h"
31 #endif
32
33 #define SINETABLE(size) \
34 static SINETABLE_CONST DECLARE_ALIGNED(32, int, sine_##size##_fixed)[size]
35
36 #if CONFIG_HARDCODED_TABLES
37 #define init_sine_windows_fixed()
38 #define SINETABLE_CONST const
39 #include "libavcodec/sinewin_fixed_tables.h"
40 #else
41 // do not use libavutil/libm.h since this is compiled both
42 // for the host and the target and config.h is only valid for the target
43 #include <math.h>
44 #include "libavutil/attributes.h"
45
46 #define SINETABLE_CONST
47 SINETABLE( 128);
48 SINETABLE( 512);
49 SINETABLE(1024);
50
51 #define SIN_FIX(a) (int)floor((a) * 0x80000000 + 0.5)
52
53 // Generate a sine window.
54 48 static av_cold void sine_window_init_fixed(int *window, int n)
55 {
56
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26672 for (int i = 0; i < n; i++)
57 26624 window[i] = SIN_FIX(sinf((i + 0.5) * (M_PI / (2.0 * n))));
58 48 }
59
60 16 static av_cold void init_sine_windows_fixed(void)
61 {
62 16 sine_window_init_fixed(sine_128_fixed, 128);
63 16 sine_window_init_fixed(sine_512_fixed, 512);
64 16 sine_window_init_fixed(sine_1024_fixed, 1024);
65 16 }
66 #endif /* CONFIG_HARDCODED_TABLES */
67 #endif /* AVCODEC_SINEWIN_FIXED_TABLEGEN_H */
68