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Diffstat (limited to 'libavcodec/liba52/a52_internal.h')
| -rw-r--r-- | libavcodec/liba52/a52_internal.h | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/libavcodec/liba52/a52_internal.h b/libavcodec/liba52/a52_internal.h deleted file mode 100644 index 49fd4ef997..0000000000 --- a/libavcodec/liba52/a52_internal.h +++ /dev/null @@ -1,162 +0,0 @@ -/* - * a52_internal.h - * Copyright (C) 2000-2003 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -typedef struct { - uint8_t bai; /* fine SNR offset, fast gain */ - uint8_t deltbae; /* delta bit allocation exists */ - int8_t deltba[50]; /* per-band delta bit allocation */ -} ba_t; - -typedef struct { - uint8_t exp[256]; /* decoded channel exponents */ - int8_t bap[256]; /* derived channel bit allocation */ -} expbap_t; - -struct a52_state_s { - uint8_t fscod; /* sample rate */ - uint8_t halfrate; /* halfrate factor */ - uint8_t acmod; /* coded channels */ - uint8_t lfeon; /* coded lfe channel */ - level_t clev; /* centre channel mix level */ - level_t slev; /* surround channels mix level */ - - int output; /* type of output */ - level_t level; /* output level */ - sample_t bias; /* output bias */ - - int dynrnge; /* apply dynamic range */ - level_t dynrng; /* dynamic range */ - void * dynrngdata; /* dynamic range callback funtion and data */ - level_t (* dynrngcall) (level_t range, void * dynrngdata); - - uint8_t chincpl; /* channel coupled */ - uint8_t phsflginu; /* phase flags in use (stereo only) */ - uint8_t cplstrtmant; /* coupling channel start mantissa */ - uint8_t cplendmant; /* coupling channel end mantissa */ - uint32_t cplbndstrc; /* coupling band structure */ - level_t cplco[5][18]; /* coupling coordinates */ - - /* derived information */ - uint8_t cplstrtbnd; /* coupling start band (for bit allocation) */ - uint8_t ncplbnd; /* number of coupling bands */ - - uint8_t rematflg; /* stereo rematrixing */ - - uint8_t endmant[5]; /* channel end mantissa */ - - uint16_t bai; /* bit allocation information */ - - uint32_t * buffer_start; - uint16_t lfsr_state; /* dither state */ - uint32_t bits_left; - uint32_t current_word; - - uint8_t csnroffst; /* coarse SNR offset */ - ba_t cplba; /* coupling bit allocation parameters */ - ba_t ba[5]; /* channel bit allocation parameters */ - ba_t lfeba; /* lfe bit allocation parameters */ - - uint8_t cplfleak; /* coupling fast leak init */ - uint8_t cplsleak; /* coupling slow leak init */ - - expbap_t cpl_expbap; - expbap_t fbw_expbap[5]; - expbap_t lfe_expbap; - - sample_t * samples; - int downmixed; -}; - -#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 a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart, - int start, int end, int fastleak, int slowleak, - expbap_t * expbap); - -int a52_downmix_init (int input, int flags, level_t * level, - level_t clev, level_t slev); -int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level, - level_t clev, level_t slev); -void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias, - level_t clev, level_t slev); -void a52_upmix (sample_t * samples, int acmod, int output); - -void a52_imdct_init (uint32_t mm_accel); -void a52_imdct_256 (sample_t * data, sample_t * delay, sample_t bias); -void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias); -//extern void (* a52_imdct_256) (sample_t data[], sample_t delay[], sample_t bias); -//extern void (* a52_imdct_512) (sample_t data[], sample_t delay[], sample_t bias); - -#define ROUND(x) ((int)((x) + ((x) > 0 ? 0.5 : -0.5))) - -#ifndef LIBA52_FIXED - -typedef sample_t quantizer_t; -#define SAMPLE(x) (x) -#define LEVEL(x) (x) -#define MUL(a,b) ((a) * (b)) -#define MUL_L(a,b) ((a) * (b)) -#define MUL_C(a,b) ((a) * (b)) -#define DIV(a,b) ((a) / (b)) -#define BIAS(x) ((x) + bias) - -#else /* LIBA52_FIXED */ - -typedef int16_t quantizer_t; -#define SAMPLE(x) (sample_t)((x) * (1 << 30)) -#define LEVEL(x) (level_t)((x) * (1 << 26)) - -#if 0 -#define MUL(a,b) ((int)(((int64_t)(a) * (b) + (1 << 29)) >> 30)) -#define MUL_L(a,b) ((int)(((int64_t)(a) * (b) + (1 << 25)) >> 26)) -#elif 1 -#define MUL(a,b) \ -({ int32_t _ta=(a), _tb=(b), _tc; \ - _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)(((_tc >> 14))+ (((_ta >> 16)*(_tb >> 16)) << 2 )); }) -#define MUL_L(a,b) \ -({ int32_t _ta=(a), _tb=(b), _tc; \ - _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)((_tc >> 10) + (((_ta >> 16)*(_tb >> 16)) << 6)); }) -#else -#define MUL(a,b) (((a) >> 15) * ((b) >> 15)) -#define MUL_L(a,b) (((a) >> 13) * ((b) >> 13)) -#endif - -#define MUL_C(a,b) MUL_L (a, LEVEL (b)) -#define DIV(a,b) ((((int64_t)LEVEL (a)) << 26) / (b)) -#define BIAS(x) (x) - -#endif |