1cabdff1aSopenharmony_ci/*
2cabdff1aSopenharmony_ci * Copyright (c) 2008 Robert Swain
3cabdff1aSopenharmony_ci *
4cabdff1aSopenharmony_ci * This file is part of FFmpeg.
5cabdff1aSopenharmony_ci *
6cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or
7cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public
8cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either
9cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version.
10cabdff1aSopenharmony_ci *
11cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful,
12cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of
13cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14cabdff1aSopenharmony_ci * Lesser General Public License for more details.
15cabdff1aSopenharmony_ci *
16cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public
17cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software
18cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19cabdff1aSopenharmony_ci */
20cabdff1aSopenharmony_ci
21cabdff1aSopenharmony_ci#ifndef AVCODEC_SINEWIN_H
22cabdff1aSopenharmony_ci#define AVCODEC_SINEWIN_H
23cabdff1aSopenharmony_ci
24cabdff1aSopenharmony_ci#include "config.h"
25cabdff1aSopenharmony_ci#include "libavutil/mem_internal.h"
26cabdff1aSopenharmony_ci
27cabdff1aSopenharmony_ci#if CONFIG_HARDCODED_TABLES
28cabdff1aSopenharmony_ci#   define SINETABLE_CONST const
29cabdff1aSopenharmony_ci#else
30cabdff1aSopenharmony_ci#   define SINETABLE_CONST
31cabdff1aSopenharmony_ci#endif
32cabdff1aSopenharmony_ci
33cabdff1aSopenharmony_ci#define SINETABLE(size) \
34cabdff1aSopenharmony_ci    SINETABLE_CONST DECLARE_ALIGNED(32, float, ff_sine_##size)[size]
35cabdff1aSopenharmony_ci
36cabdff1aSopenharmony_ci/**
37cabdff1aSopenharmony_ci * Generate a sine window.
38cabdff1aSopenharmony_ci * @param   window  pointer to half window
39cabdff1aSopenharmony_ci * @param   n       size of half window
40cabdff1aSopenharmony_ci */
41cabdff1aSopenharmony_civoid ff_sine_window_init(float *window, int n);
42cabdff1aSopenharmony_ci
43cabdff1aSopenharmony_ci/**
44cabdff1aSopenharmony_ci * initialize the specified entry of ff_sine_windows
45cabdff1aSopenharmony_ci */
46cabdff1aSopenharmony_civoid ff_init_ff_sine_windows(int index);
47cabdff1aSopenharmony_ci
48cabdff1aSopenharmony_ciextern SINETABLE(  32);
49cabdff1aSopenharmony_ciextern SINETABLE(  64);
50cabdff1aSopenharmony_ciextern SINETABLE( 128);
51cabdff1aSopenharmony_ciextern SINETABLE( 256);
52cabdff1aSopenharmony_ciextern SINETABLE( 512);
53cabdff1aSopenharmony_ciextern SINETABLE(1024);
54cabdff1aSopenharmony_ciextern SINETABLE(2048);
55cabdff1aSopenharmony_ciextern SINETABLE(4096);
56cabdff1aSopenharmony_ciextern SINETABLE(8192);
57cabdff1aSopenharmony_ci
58cabdff1aSopenharmony_ciextern SINETABLE_CONST float *const ff_sine_windows[];
59cabdff1aSopenharmony_ci
60cabdff1aSopenharmony_ci#endif /* AVCODEC_SINEWIN_H */
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