FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/sinewin_tablegen.h
Date: 2025-07-28 20:30:09
Exec Total Coverage
Lines: 16 16 100.0%
Functions: 11 11 100.0%
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_TABLEGEN_H
24 #define AVCODEC_SINEWIN_TABLEGEN_H
25
26 #include <assert.h>
27 // do not use libavutil/libm.h since this is compiled both
28 // for the host and the target and config.h is only valid for the target
29 #include <math.h>
30 #include "libavutil/attributes.h"
31 #include "libavutil/common.h"
32
33 #if !CONFIG_HARDCODED_TABLES
34 #ifndef BUILD_TABLES
35 #include "libavutil/thread.h"
36 #endif
37
38 SINETABLE( 32);
39 SINETABLE( 64);
40 SINETABLE( 128);
41 SINETABLE( 256);
42 SINETABLE( 512);
43 SINETABLE(1024);
44 SINETABLE(2048);
45 SINETABLE(4096);
46 SINETABLE(8192);
47 #else
48 #include "libavcodec/sinewin_tables.h"
49 #endif
50
51 SINETABLE_CONST float *const ff_sine_windows[] = {
52 NULL, NULL, NULL, NULL, NULL, // unused
53 ff_sine_32, ff_sine_64, ff_sine_128,
54 ff_sine_256, ff_sine_512, ff_sine_1024,
55 ff_sine_2048, ff_sine_4096, ff_sine_8192,
56 };
57
58 // Generate a sine window.
59 972 av_cold void ff_sine_window_init(float *window, int n)
60 {
61 int i;
62
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 597044 for(i = 0; i < n; i++)
63 596072 window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n)));
64 972 }
65
66 #if !CONFIG_HARDCODED_TABLES && !defined(BUILD_TABLES)
67 #define INIT_FF_SINE_WINDOW_INIT_FUNC(index) \
68 static void init_ff_sine_window_ ## index(void) \
69 { \
70 ff_sine_window_init(ff_sine_windows[index], 1 << index);\
71 }
72
73 7 INIT_FF_SINE_WINDOW_INIT_FUNC(5)
74 12 INIT_FF_SINE_WINDOW_INIT_FUNC(6)
75 196 INIT_FF_SINE_WINDOW_INIT_FUNC(7)
76 12 INIT_FF_SINE_WINDOW_INIT_FUNC(8)
77 182 INIT_FF_SINE_WINDOW_INIT_FUNC(9)
78 188 INIT_FF_SINE_WINDOW_INIT_FUNC(10)
79 15 INIT_FF_SINE_WINDOW_INIT_FUNC(11)
80 5 INIT_FF_SINE_WINDOW_INIT_FUNC(12)
81 5 INIT_FF_SINE_WINDOW_INIT_FUNC(13)
82
83 static void (*const sine_window_init_func_array[])(void) = {
84 init_ff_sine_window_5,
85 init_ff_sine_window_6,
86 init_ff_sine_window_7,
87 init_ff_sine_window_8,
88 init_ff_sine_window_9,
89 init_ff_sine_window_10,
90 init_ff_sine_window_11,
91 init_ff_sine_window_12,
92 init_ff_sine_window_13,
93 };
94
95 static AVOnce init_sine_window_once[9] = {
96 AV_ONCE_INIT, AV_ONCE_INIT, AV_ONCE_INIT, AV_ONCE_INIT, AV_ONCE_INIT,
97 AV_ONCE_INIT, AV_ONCE_INIT, AV_ONCE_INIT, AV_ONCE_INIT
98 };
99 #endif
100
101 633 av_cold void ff_init_ff_sine_windows(int index)
102 {
103 assert(index >= 5 && index < FF_ARRAY_ELEMS(ff_sine_windows));
104 #if !CONFIG_HARDCODED_TABLES
105 #ifdef BUILD_TABLES
106 ff_sine_window_init(ff_sine_windows[index], 1 << index);
107 #else
108 633 ff_thread_once(&init_sine_window_once[index - 5], sine_window_init_func_array[index - 5]);
109 #endif
110 #endif
111 633 }
112
113 #endif /* AVCODEC_SINEWIN_TABLEGEN_H */
114