GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/sinewin_tablegen.h Lines: 7 7 100.0 %
Date: 2020-08-14 10:39:37 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 "libavcodec/aac_defines.h"
31
#include "libavutil/attributes.h"
32
#include "libavutil/common.h"
33
34
#if !USE_FIXED
35
SINETABLE120960(120);
36
SINETABLE120960(960);
37
#endif
38
#if !CONFIG_HARDCODED_TABLES
39
SINETABLE(  32);
40
SINETABLE(  64);
41
SINETABLE( 128);
42
SINETABLE( 256);
43
SINETABLE( 512);
44
SINETABLE(1024);
45
SINETABLE(2048);
46
SINETABLE(4096);
47
SINETABLE(8192);
48
#else
49
#if USE_FIXED
50
#include "libavcodec/sinewin_fixed_tables.h"
51
#else
52
#include "libavcodec/sinewin_tables.h"
53
#endif
54
#endif
55
56
#if USE_FIXED
57
#define SIN_FIX(a) (int)floor((a) * 0x80000000 + 0.5)
58
#else
59
#define SIN_FIX(a) a
60
#endif
61
62
SINETABLE_CONST INTFLOAT * const AAC_RENAME(ff_sine_windows)[] = {
63
    NULL, NULL, NULL, NULL, NULL, // unused
64
    AAC_RENAME(ff_sine_32) , AAC_RENAME(ff_sine_64), AAC_RENAME(ff_sine_128),
65
    AAC_RENAME(ff_sine_256), AAC_RENAME(ff_sine_512), AAC_RENAME(ff_sine_1024),
66
    AAC_RENAME(ff_sine_2048), AAC_RENAME(ff_sine_4096), AAC_RENAME(ff_sine_8192),
67
};
68
69
// Generate a sine window.
70
955
av_cold void AAC_RENAME(ff_sine_window_init)(INTFLOAT *window, int n) {
71
    int i;
72
630267
    for(i = 0; i < n; i++)
73
629312
        window[i] = SIN_FIX(sinf((i + 0.5) * (M_PI / (2.0 * n))));
74
955
}
75
76
643
av_cold void AAC_RENAME(ff_init_ff_sine_windows)(int index) {
77
    assert(index >= 0 && index < FF_ARRAY_ELEMS(AAC_RENAME(ff_sine_windows)));
78
#if !CONFIG_HARDCODED_TABLES
79
643
    AAC_RENAME(ff_sine_window_init)(AAC_RENAME(ff_sine_windows)[index], 1 << index);
80
#endif
81
643
}
82
83
#endif /* AVCODEC_SINEWIN_TABLEGEN_H */