diff options
Diffstat (limited to 'liba52/a52_internal.h')
| -rw-r--r-- | liba52/a52_internal.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/liba52/a52_internal.h b/liba52/a52_internal.h new file mode 100644 index 0000000000..e26115d349 --- /dev/null +++ b/liba52/a52_internal.h @@ -0,0 +1,56 @@ +/* + * a52_internal.h + * Copyright (C) 2000-2001 Michel Lespinasse <walken@zoy.org> + * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> + * + * This file is part of a52dec, a free ATSC A-52 stream decoder. + * See http://liba52.sourceforge.net/ for updates. + * + * a52dec is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * a52dec is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#define LEVEL_PLUS6DB 2.0 +#define LEVEL_PLUS3DB 1.4142135623730951 +#define LEVEL_3DB 0.7071067811865476 +#define LEVEL_45DB 0.5946035575013605 +#define LEVEL_6DB 0.5 + +#define EXP_REUSE (0) +#define EXP_D15 (1) +#define EXP_D25 (2) +#define EXP_D45 (3) + +#define DELTA_BIT_REUSE (0) +#define DELTA_BIT_NEW (1) +#define DELTA_BIT_NONE (2) +#define DELTA_BIT_RESERVED (3) + +void bit_allocate (a52_state_t * state, a52_ba_t * ba, int bndstart, + int start, int end, int fastleak, int slowleak, + uint8_t * exp, int8_t * bap); + +int downmix_init (int input, int flags, sample_t * level, + sample_t clev, sample_t slev); +int downmix_coeff (sample_t * coeff, int acmod, int output, sample_t level, + sample_t clev, sample_t slev); +void downmix (sample_t * samples, int acmod, int output, sample_t bias, + sample_t clev, sample_t slev); +void upmix (sample_t * samples, int acmod, int output); + +void imdct_init (uint32_t mm_accel); +extern void (* imdct_256) (sample_t * data, sample_t * delay, sample_t bias); +extern void (* imdct_512) (sample_t * data, sample_t * delay, sample_t bias); +void imdct_do_256_mlib (sample_t * data, sample_t * delay, sample_t bias); +void imdct_do_512_mlib (sample_t * data, sample_t * delay, sample_t bias); |