1 /* 2 * audio_out_internal.h 3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org> 4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> 5 * 6 * This file is part of a52dec, a free ATSC A-52 stream decoder. 7 * See http://liba52.sourceforge.net/ for updates. 8 * 9 * a52dec is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * a52dec is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the 21 * Free Software Foundation, Inc., 22 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 23 */ 24 25 #ifdef LIBDCA_DOUBLE 26 typedef float convert_t; 27 #else 28 typedef sample_t convert_t; 29 #endif 30 31 #ifdef LIBDCA_FIXED 32 #define CONVERT_LEVEL (1 << 26) 33 #define CONVERT_BIAS 0 34 #else 35 #define CONVERT_LEVEL 1 36 #define CONVERT_BIAS 384 37 #endif 38 39 void convert2s16_1 (convert_t * f, int16_t * s16); 40 void convert2s16_2 (convert_t * f, int16_t * s16); 41 void convert2s16_3 (convert_t * f, int16_t * s16); 42 void convert2s16_4 (convert_t * f, int16_t * s16); 43 void convert2s16_5 (convert_t * f, int16_t * s16); 44 int channels_multi (int flags); 45 void convert2s16_multi (convert_t * f, int16_t * s16, int flags); 46 void convert2s16_wav (convert_t * f, int16_t * s16, int flags); 47 void s16_swap (int16_t * s16, int channels); 48 void s32_swap (int32_t * s32, int channels); 49 50 #ifdef WORDS_BIGENDIAN 51 #define s16_LE(s16,channels) s16_swap (s16, channels) 52 #define s16_BE(s16,channels) do {} while (0) 53 #define s32_LE(s32,channels) s32_swap (s32, channels) 54 #define s32_BE(s32,channels) do {} while (0) 55 #else 56 #define s16_LE(s16,channels) do {} while (0) 57 #define s16_BE(s16,channels) s16_swap (s16, channels) 58 #define s32_LE(s32,channels) do {} while (0) 59 #define s32_BE(s32,channels) s32_swap (s32, channels) 60 #endif 61