| 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( 120); | ||
| 48 | SINETABLE( 128); | ||
| 49 | SINETABLE( 480); | ||
| 50 | SINETABLE( 512); | ||
| 51 | SINETABLE( 960); | ||
| 52 | SINETABLE(1024); | ||
| 53 | |||
| 54 | #define SIN_FIX(a) (int)floor((a) * 0x80000000 + 0.5) | ||
| 55 | |||
| 56 | // Generate a sine window. | ||
| 57 | 108 | static av_cold void sine_window_init_fixed(int *window, int n) | |
| 58 | { | ||
| 59 |
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58140 | for (int i = 0; i < n; i++) |
| 60 | 58032 | window[i] = SIN_FIX(sinf((i + 0.5) * (M_PI / (2.0 * n)))); | |
| 61 | 108 | } | |
| 62 | |||
| 63 | 18 | static av_cold void init_sine_windows_fixed(void) | |
| 64 | { | ||
| 65 | 18 | sine_window_init_fixed(sine_120_fixed, 120); | |
| 66 | 18 | sine_window_init_fixed(sine_128_fixed, 128); | |
| 67 | 18 | sine_window_init_fixed(sine_480_fixed, 480); | |
| 68 | 18 | sine_window_init_fixed(sine_512_fixed, 512); | |
| 69 | 18 | sine_window_init_fixed(sine_960_fixed, 960); | |
| 70 | 18 | sine_window_init_fixed(sine_1024_fixed, 1024); | |
| 71 | 18 | } | |
| 72 | #endif /* CONFIG_HARDCODED_TABLES */ | ||
| 73 | #endif /* AVCODEC_SINEWIN_FIXED_TABLEGEN_H */ | ||
| 74 |