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diff --git a/ac3dec/ac3_internal.h b/ac3dec/ac3_internal.h
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-/*
- * ac3_internal.h
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#ifndef __GNUC__
-#define inline
-#endif
-
-#include <setjmp.h>
-
-/* Exponent strategy constants */
-#define EXP_REUSE (0)
-#define EXP_D15 (1)
-#define EXP_D25 (2)
-#define EXP_D45 (3)
-
-/* Delta bit allocation constants */
-#define DELTA_BIT_REUSE (0)
-#define DELTA_BIT_NEW (1)
-#define DELTA_BIT_NONE (2)
-#define DELTA_BIT_RESERVED (3)
-
-/* samples work structure */
-typedef float stream_samples_t[6][256];
-
-/* global config structure */
-extern ac3_config_t ac3_config;
-/* global error flag */
-extern jmp_buf error_jmp_mark;
-#define HANDLE_ERROR() longjmp (error_jmp_mark, -1)
-
-/* Everything you wanted to know about band structure */
-/*
- * The entire frequency domain is represented by 256 real
- * floating point fourier coefficients. Only the lower 253
- * coefficients are actually utilized however. We use arrays
- * of 256 to be efficient in some cases.
- *
- * The 5 full bandwidth channels (fbw) can have their higher
- * frequencies coupled together. These coupled channels then
- * share their high frequency components.
- *
- * This coupling band is broken up into 18 sub-bands starting
- * at mantissa number 37. Each sub-band is 12 bins wide.
- *
- * There are 50 bit allocation sub-bands which cover the entire
- * frequency range. The sub-bands are of non-uniform width, and
- * approximate a 1/6 octave scale.
- */
-
-/* The following structures are filled in by their corresponding parse_*
- * functions. See http://www.atsc.org/Standards/A52/a_52.pdf for
- * full details on each field. Indented fields are used to denote
- * conditional fields.
- */
-
-typedef struct syncinfo_s
-{
- uint32_t magic;
- /* Sync word == 0x0B77 */
- uint16_t syncword;
- /* crc for the first 5/8 of the sync block */
- /* uint16_t crc1; */
- /* Stream Sampling Rate (kHz) 0 = 48, 1 = 44.1, 2 = 32, 3 = reserved */
- uint16_t fscod;
- /* Frame size code */
- uint16_t frmsizecod;
-
- /* Information not in the AC-3 bitstream, but derived */
- /* Frame size in 16 bit words */
- uint16_t frame_size;
- /* Bit rate in kilobits */
- uint16_t bit_rate;
- /* sampling rate in hertz */
- uint32_t sampling_rate;
-
-} syncinfo_t;
-
-typedef struct bsi_s
-{
- uint32_t magic;
- /* Bit stream identification == 0x8 */
- uint16_t bsid;
- /* Bit stream mode */
- uint16_t bsmod;
- /* Audio coding mode */
- uint16_t acmod;
- /* If we're using the centre channel then */
- /* centre mix level */
- uint16_t cmixlev;
- /* If we're using the surround channel then */
- /* surround mix level */
- uint16_t surmixlev;
- /* If we're in 2/0 mode then */
- /* Dolby surround mix level - NOT USED - */
- uint16_t dsurmod;
- /* Low frequency effects on */
- uint16_t lfeon;
- /* Dialogue Normalization level */
- uint16_t dialnorm;
- /* Compression exists */
- uint16_t compre;
- /* Compression level */
- uint16_t compr;
- /* Language code exists */
- uint16_t langcode;
- /* Language code */
- uint16_t langcod;
- /* Audio production info exists*/
- uint16_t audprodie;
- uint16_t mixlevel;
- uint16_t roomtyp;
- /* If we're in dual mono mode (acmod == 0) then extra stuff */
- uint16_t dialnorm2;
- uint16_t compr2e;
- uint16_t compr2;
- uint16_t langcod2e;
- uint16_t langcod2;
- uint16_t audprodi2e;
- uint16_t mixlevel2;
- uint16_t roomtyp2;
- /* Copyright bit */
- uint16_t copyrightb;
- /* Original bit */
- uint16_t origbs;
- /* Timecode 1 exists */
- uint16_t timecod1e;
- /* Timecode 1 */
- uint16_t timecod1;
- /* Timecode 2 exists */
- uint16_t timecod2e;
- /* Timecode 2 */
- uint16_t timecod2;
- /* Additional bit stream info exists */
- uint16_t addbsie;
- /* Additional bit stream length - 1 (in bytes) */
- uint16_t addbsil;
- /* Additional bit stream information (max 64 bytes) */
- uint8_t addbsi[64];
-
- /* Information not in the AC-3 bitstream, but derived */
- /* Number of channels (excluding LFE)
- * Derived from acmod */
- uint16_t nfchans;
-} bsi_t;
-
-
-/* more pain */
-typedef struct audblk_s
-{
- uint32_t magic1;
- /* block switch bit indexed by channel num */
- uint16_t blksw[5];
- /* dither enable bit indexed by channel num */
- uint16_t dithflag[5];
- /* dynamic range gain exists */
- uint16_t dynrnge;
- /* dynamic range gain */
- uint16_t dynrng;
- /* if acmod==0 then */
- /* dynamic range 2 gain exists */
- uint16_t dynrng2e;
- /* dynamic range 2 gain */
- uint16_t dynrng2;
- /* coupling strategy exists */
- uint16_t cplstre;
- /* coupling in use */
- uint16_t cplinu;
- /* channel coupled */
- uint16_t chincpl[5];
- /* if acmod==2 then */
- /* Phase flags in use */
- uint16_t phsflginu;
- /* coupling begin frequency code */
- uint16_t cplbegf;
- /* coupling end frequency code */
- uint16_t cplendf;
- /* coupling band structure bits */
- uint16_t cplbndstrc[18];
- /* Do coupling co-ords exist for this channel? */
- uint16_t cplcoe[5];
- /* Master coupling co-ordinate */
- uint16_t mstrcplco[5];
- /* Per coupling band coupling co-ordinates */
- uint16_t cplcoexp[5][18];
- uint16_t cplcomant[5][18];
- /* Phase flags for dual mono */
- uint16_t phsflg[18];
- /* Is there a rematrixing strategy */
- uint16_t rematstr;
- /* Rematrixing bits */
- uint16_t rematflg[4];
- /* Coupling exponent strategy */
- uint16_t cplexpstr;
- /* Exponent strategy for full bandwidth channels */
- uint16_t chexpstr[5];
- /* Exponent strategy for lfe channel */
- uint16_t lfeexpstr;
- /* Channel bandwidth for independent channels */
- uint16_t chbwcod[5];
- /* The absolute coupling exponent */
- uint16_t cplabsexp;
- /* Coupling channel exponents (D15 mode gives 18 * 12 /3 encoded exponents */
- uint16_t cplexps[18 * 12 / 3];
- /* Sanity checking constant */
- uint32_t magic2;
- /* fbw channel exponents */
- uint16_t exps[5][252 / 3];
- /* channel gain range */
- uint16_t gainrng[5];
- /* low frequency exponents */
- uint16_t lfeexps[3];
-
- /* Bit allocation info */
- uint16_t baie;
- /* Slow decay code */
- uint16_t sdcycod;
- /* Fast decay code */
- uint16_t fdcycod;
- /* Slow gain code */
- uint16_t sgaincod;
- /* dB per bit code */
- uint16_t dbpbcod;
- /* masking floor code */
- uint16_t floorcod;
-
- /* SNR offset info */
- uint16_t snroffste;
- /* coarse SNR offset */
- uint16_t csnroffst;
- /* coupling fine SNR offset */
- uint16_t cplfsnroffst;
- /* coupling fast gain code */
- uint16_t cplfgaincod;
- /* fbw fine SNR offset */
- uint16_t fsnroffst[5];
- /* fbw fast gain code */
- uint16_t fgaincod[5];
- /* lfe fine SNR offset */
- uint16_t lfefsnroffst;
- /* lfe fast gain code */
- uint16_t lfefgaincod;
-
- /* Coupling leak info */
- uint16_t cplleake;
- /* coupling fast leak initialization */
- uint16_t cplfleak;
- /* coupling slow leak initialization */
- uint16_t cplsleak;
-
- /* delta bit allocation info */
- uint16_t deltbaie;
- /* coupling delta bit allocation exists */
- uint16_t cpldeltbae;
- /* fbw delta bit allocation exists */
- uint16_t deltbae[5];
- /* number of cpl delta bit segments */
- uint16_t cpldeltnseg;
- /* coupling delta bit allocation offset */
- uint16_t cpldeltoffst[8];
- /* coupling delta bit allocation length */
- uint16_t cpldeltlen[8];
- /* coupling delta bit allocation length */
- uint16_t cpldeltba[8];
- /* number of delta bit segments */
- uint16_t deltnseg[5];
- /* fbw delta bit allocation offset */
- uint16_t deltoffst[5][8];
- /* fbw delta bit allocation length */
- uint16_t deltlen[5][8];
- /* fbw delta bit allocation length */
- uint16_t deltba[5][8];
-
- /* skip length exists */
- uint16_t skiple;
- /* skip length */
- uint16_t skipl;
-
- //Removed Feb 2000 -ah
- //added Jul 2000 ++dent
- /* channel mantissas */
- uint16_t chmant[5][256];
-
- /* coupling mantissas */
-// uint16_t cplmant[256];
-
- //Added Jun 2000 -MaXX
- /* coupling floats */
- float cpl_flt[ 256 ];
-
- //Removed Feb 2000 -ah
- //added Jul 2000 ++dent
- /* coupling mantissas */
- uint16_t lfemant[7];
-
-
- /* -- Information not in the bitstream, but derived thereof -- */
-
- /* Number of coupling sub-bands */
- uint16_t ncplsubnd;
-
- /* Number of combined coupling sub-bands
- * Derived from ncplsubnd and cplbndstrc */
- uint16_t ncplbnd;
-
- /* Number of exponent groups by channel
- * Derived from strmant, endmant */
- uint16_t nchgrps[5];
-
- /* Number of coupling exponent groups
- * Derived from cplbegf, cplendf, cplexpstr */
- uint16_t ncplgrps;
-
- /* End mantissa numbers of fbw channels */
- uint16_t endmant[5];
-
- /* Start and end mantissa numbers for the coupling channel */
- uint16_t cplstrtmant;
- uint16_t cplendmant;
-
- /* Decoded exponent info */
- uint16_t fbw_exp[5][256];
- uint16_t cpl_exp[256];
- uint16_t lfe_exp[7];
-
- /* Bit allocation pointer results */
- uint16_t fbw_bap[5][256];
- uint16_t cpl_bap[256];
- uint16_t lfe_bap[7];
-
- uint32_t magic3;
-} audblk_t;
-
-