1 /* 2 * a52.h 3 * Copyright (C) 2000-2002 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 Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 24 #ifndef A52_H 25 #define A52_H 26 27 #ifndef LIBA52_DOUBLE 28 typedef float sample_t; 29 #else 30 typedef double sample_t; 31 #endif 32 33 typedef struct a52_state_s a52_state_t; 34 35 #define A52_CHANNEL 0 36 #define A52_MONO 1 37 #define A52_STEREO 2 38 #define A52_3F 3 39 #define A52_2F1R 4 40 #define A52_3F1R 5 41 #define A52_2F2R 6 42 #define A52_3F2R 7 43 #define A52_CHANNEL1 8 44 #define A52_CHANNEL2 9 45 #define A52_DOLBY 10 46 #define A52_CHANNEL_MASK 15 47 48 #define A52_LFE 16 49 #define A52_ADJUST_LEVEL 32 50 51 a52_state_t * a52_init (uint32_t mm_accel); 52 sample_t * a52_samples (a52_state_t * state); 53 int a52_syncinfo (uint8_t * buf, int * flags, 54 int * sample_rate, int * bit_rate); 55 int a52_frame (a52_state_t * state, uint8_t * buf, int * flags, 56 sample_t * level, sample_t bias); 57 void a52_dynrng (a52_state_t * state, 58 sample_t (* call) (sample_t, void *), void * data); 59 int a52_block (a52_state_t * state); 60 void a52_free (a52_state_t * state); 61 62 #endif /* A52_H */ 63