| 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 |
2/2
✓ Branch 0 taken 26624 times.
✓ Branch 1 taken 48 times.
|
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 |
|
|
|