1 /* 2 * Copyright (c) 2008 Robert Swain 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef AVCODEC_SINEWIN_H 22 #define AVCODEC_SINEWIN_H 23 24 #include "config.h" 25 #include "libavutil/mem.h" 26 #include "libavcodec/aac_defines.h" 27 28 #if CONFIG_HARDCODED_TABLES 29 # define SINETABLE_CONST const 30 #else 31 # define SINETABLE_CONST 32 #endif 33 34 #ifndef USE_FIXED 35 #define USE_FIXED 0 36 #endif 37 38 #define SINETABLE(size) \ 39 SINETABLE_CONST DECLARE_ALIGNED(32, INTFLOAT, AAC_RENAME(ff_sine_##size))[size] 40 41 #define SINETABLE120960(size) \ 42 DECLARE_ALIGNED(32, INTFLOAT, AAC_RENAME(ff_sine_##size))[size] 43 44 /** 45 * Generate a sine window. 46 * @param window pointer to half window 47 * @param n size of half window 48 */ 49 void AAC_RENAME(ff_sine_window_init)(INTFLOAT *window, int n); 50 51 /** 52 * initialize the specified entry of ff_sine_windows 53 */ 54 void AAC_RENAME(ff_init_ff_sine_windows)(int index); 55 56 extern SINETABLE( 32); 57 extern SINETABLE( 64); 58 extern SINETABLE120960(120); 59 extern SINETABLE( 128); 60 extern SINETABLE( 256); 61 extern SINETABLE( 512); 62 extern SINETABLE120960(960); 63 extern SINETABLE(1024); 64 extern SINETABLE(2048); 65 extern SINETABLE(4096); 66 extern SINETABLE(8192); 67 68 extern SINETABLE_CONST INTFLOAT * const AAC_RENAME(ff_sine_windows)[16]; 69 70 #endif /* AVCODEC_SINEWIN_H */ 71