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authorKlaus Schmidinger <vdr@tvdr.de>2001-08-09 11:41:39 +0200
committerKlaus Schmidinger <vdr@tvdr.de>2001-08-09 11:41:39 +0200
commitc50dc5e888627bd1644f46585a44dc118c865127 (patch)
tree1dc5a28da106e3404863fc0234891142a5c29b2f /ac3dec/ac3_internal.h
parent85a027791063dfd7e94ccef45ea9e755df63d29a (diff)
downloadvdr-c50dc5e888627bd1644f46585a44dc118c865127.tar.gz
vdr-c50dc5e888627bd1644f46585a44dc118c865127.tar.bz2
Improvements from Matjaz Thaler
Diffstat (limited to 'ac3dec/ac3_internal.h')
-rw-r--r--ac3dec/ac3_internal.h251
1 files changed, 130 insertions, 121 deletions
diff --git a/ac3dec/ac3_internal.h b/ac3dec/ac3_internal.h
index 235189ed..259396fd 100644
--- a/ac3dec/ac3_internal.h
+++ b/ac3dec/ac3_internal.h
@@ -25,6 +25,8 @@
#define inline
#endif
+#include <setjmp.h>
+
/* Exponent strategy constants */
#define EXP_REUSE (0)
#define EXP_D15 (1)
@@ -43,7 +45,8 @@ typedef float stream_samples_t[6][256];
/* global config structure */
extern ac3_config_t ac3_config;
/* global error flag */
-extern uint_32 error_flag;
+extern jmp_buf error_jmp_mark;
+#define HANDLE_ERROR() longjmp (error_jmp_mark, -1)
/* Everything you wanted to know about band structure */
/*
@@ -72,273 +75,279 @@ extern uint_32 error_flag;
typedef struct syncinfo_s
{
- uint_32 magic;
+ uint32_t magic;
/* Sync word == 0x0B77 */
- uint_16 syncword;
+ uint16_t syncword;
/* crc for the first 5/8 of the sync block */
- /* uint_16 crc1; */
+ /* uint16_t crc1; */
/* Stream Sampling Rate (kHz) 0 = 48, 1 = 44.1, 2 = 32, 3 = reserved */
- uint_16 fscod;
+ uint16_t fscod;
/* Frame size code */
- uint_16 frmsizecod;
+ uint16_t frmsizecod;
/* Information not in the AC-3 bitstream, but derived */
/* Frame size in 16 bit words */
- uint_16 frame_size;
+ uint16_t frame_size;
/* Bit rate in kilobits */
- uint_16 bit_rate;
+ uint16_t bit_rate;
/* sampling rate in hertz */
- uint_32 sampling_rate;
+ uint32_t sampling_rate;
} syncinfo_t;
typedef struct bsi_s
{
- uint_32 magic;
+ uint32_t magic;
/* Bit stream identification == 0x8 */
- uint_16 bsid;
+ uint16_t bsid;
/* Bit stream mode */
- uint_16 bsmod;
+ uint16_t bsmod;
/* Audio coding mode */
- uint_16 acmod;
+ uint16_t acmod;
/* If we're using the centre channel then */
/* centre mix level */
- uint_16 cmixlev;
+ uint16_t cmixlev;
/* If we're using the surround channel then */
/* surround mix level */
- uint_16 surmixlev;
+ uint16_t surmixlev;
/* If we're in 2/0 mode then */
/* Dolby surround mix level - NOT USED - */
- uint_16 dsurmod;
+ uint16_t dsurmod;
/* Low frequency effects on */
- uint_16 lfeon;
+ uint16_t lfeon;
/* Dialogue Normalization level */
- uint_16 dialnorm;
+ uint16_t dialnorm;
/* Compression exists */
- uint_16 compre;
+ uint16_t compre;
/* Compression level */
- uint_16 compr;
+ uint16_t compr;
/* Language code exists */
- uint_16 langcode;
+ uint16_t langcode;
/* Language code */
- uint_16 langcod;
+ uint16_t langcod;
/* Audio production info exists*/
- uint_16 audprodie;
- uint_16 mixlevel;
- uint_16 roomtyp;
+ uint16_t audprodie;
+ uint16_t mixlevel;
+ uint16_t roomtyp;
/* If we're in dual mono mode (acmod == 0) then extra stuff */
- uint_16 dialnorm2;
- uint_16 compr2e;
- uint_16 compr2;
- uint_16 langcod2e;
- uint_16 langcod2;
- uint_16 audprodi2e;
- uint_16 mixlevel2;
- uint_16 roomtyp2;
+ 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 */
- uint_16 copyrightb;
+ uint16_t copyrightb;
/* Original bit */
- uint_16 origbs;
+ uint16_t origbs;
/* Timecode 1 exists */
- uint_16 timecod1e;
+ uint16_t timecod1e;
/* Timecode 1 */
- uint_16 timecod1;
+ uint16_t timecod1;
/* Timecode 2 exists */
- uint_16 timecod2e;
+ uint16_t timecod2e;
/* Timecode 2 */
- uint_16 timecod2;
+ uint16_t timecod2;
/* Additional bit stream info exists */
- uint_16 addbsie;
+ uint16_t addbsie;
/* Additional bit stream length - 1 (in bytes) */
- uint_16 addbsil;
+ uint16_t addbsil;
/* Additional bit stream information (max 64 bytes) */
- uint_8 addbsi[64];
+ uint8_t addbsi[64];
/* Information not in the AC-3 bitstream, but derived */
/* Number of channels (excluding LFE)
* Derived from acmod */
- uint_16 nfchans;
+ uint16_t nfchans;
} bsi_t;
/* more pain */
typedef struct audblk_s
{
- uint_32 magic1;
+ uint32_t magic1;
/* block switch bit indexed by channel num */
- uint_16 blksw[5];
+ uint16_t blksw[5];
/* dither enable bit indexed by channel num */
- uint_16 dithflag[5];
+ uint16_t dithflag[5];
/* dynamic range gain exists */
- uint_16 dynrnge;
+ uint16_t dynrnge;
/* dynamic range gain */
- uint_16 dynrng;
+ uint16_t dynrng;
/* if acmod==0 then */
/* dynamic range 2 gain exists */
- uint_16 dynrng2e;
+ uint16_t dynrng2e;
/* dynamic range 2 gain */
- uint_16 dynrng2;
+ uint16_t dynrng2;
/* coupling strategy exists */
- uint_16 cplstre;
+ uint16_t cplstre;
/* coupling in use */
- uint_16 cplinu;
+ uint16_t cplinu;
/* channel coupled */
- uint_16 chincpl[5];
+ uint16_t chincpl[5];
/* if acmod==2 then */
/* Phase flags in use */
- uint_16 phsflginu;
+ uint16_t phsflginu;
/* coupling begin frequency code */
- uint_16 cplbegf;
+ uint16_t cplbegf;
/* coupling end frequency code */
- uint_16 cplendf;
+ uint16_t cplendf;
/* coupling band structure bits */
- uint_16 cplbndstrc[18];
+ uint16_t cplbndstrc[18];
/* Do coupling co-ords exist for this channel? */
- uint_16 cplcoe[5];
+ uint16_t cplcoe[5];
/* Master coupling co-ordinate */
- uint_16 mstrcplco[5];
+ uint16_t mstrcplco[5];
/* Per coupling band coupling co-ordinates */
- uint_16 cplcoexp[5][18];
- uint_16 cplcomant[5][18];
+ uint16_t cplcoexp[5][18];
+ uint16_t cplcomant[5][18];
/* Phase flags for dual mono */
- uint_16 phsflg[18];
+ uint16_t phsflg[18];
/* Is there a rematrixing strategy */
- uint_16 rematstr;
+ uint16_t rematstr;
/* Rematrixing bits */
- uint_16 rematflg[4];
+ uint16_t rematflg[4];
/* Coupling exponent strategy */
- uint_16 cplexpstr;
+ uint16_t cplexpstr;
/* Exponent strategy for full bandwidth channels */
- uint_16 chexpstr[5];
+ uint16_t chexpstr[5];
/* Exponent strategy for lfe channel */
- uint_16 lfeexpstr;
+ uint16_t lfeexpstr;
/* Channel bandwidth for independent channels */
- uint_16 chbwcod[5];
+ uint16_t chbwcod[5];
/* The absolute coupling exponent */
- uint_16 cplabsexp;
+ uint16_t cplabsexp;
/* Coupling channel exponents (D15 mode gives 18 * 12 /3 encoded exponents */
- uint_16 cplexps[18 * 12 / 3];
+ uint16_t cplexps[18 * 12 / 3];
/* Sanity checking constant */
- uint_32 magic2;
+ uint32_t magic2;
/* fbw channel exponents */
- uint_16 exps[5][252 / 3];
+ uint16_t exps[5][252 / 3];
/* channel gain range */
- uint_16 gainrng[5];
+ uint16_t gainrng[5];
/* low frequency exponents */
- uint_16 lfeexps[3];
+ uint16_t lfeexps[3];
/* Bit allocation info */
- uint_16 baie;
+ uint16_t baie;
/* Slow decay code */
- uint_16 sdcycod;
+ uint16_t sdcycod;
/* Fast decay code */
- uint_16 fdcycod;
+ uint16_t fdcycod;
/* Slow gain code */
- uint_16 sgaincod;
+ uint16_t sgaincod;
/* dB per bit code */
- uint_16 dbpbcod;
+ uint16_t dbpbcod;
/* masking floor code */
- uint_16 floorcod;
+ uint16_t floorcod;
/* SNR offset info */
- uint_16 snroffste;
+ uint16_t snroffste;
/* coarse SNR offset */
- uint_16 csnroffst;
+ uint16_t csnroffst;
/* coupling fine SNR offset */
- uint_16 cplfsnroffst;
+ uint16_t cplfsnroffst;
/* coupling fast gain code */
- uint_16 cplfgaincod;
+ uint16_t cplfgaincod;
/* fbw fine SNR offset */
- uint_16 fsnroffst[5];
+ uint16_t fsnroffst[5];
/* fbw fast gain code */
- uint_16 fgaincod[5];
+ uint16_t fgaincod[5];
/* lfe fine SNR offset */
- uint_16 lfefsnroffst;
+ uint16_t lfefsnroffst;
/* lfe fast gain code */
- uint_16 lfefgaincod;
+ uint16_t lfefgaincod;
/* Coupling leak info */
- uint_16 cplleake;
+ uint16_t cplleake;
/* coupling fast leak initialization */
- uint_16 cplfleak;
+ uint16_t cplfleak;
/* coupling slow leak initialization */
- uint_16 cplsleak;
+ uint16_t cplsleak;
/* delta bit allocation info */
- uint_16 deltbaie;
+ uint16_t deltbaie;
/* coupling delta bit allocation exists */
- uint_16 cpldeltbae;
+ uint16_t cpldeltbae;
/* fbw delta bit allocation exists */
- uint_16 deltbae[5];
+ uint16_t deltbae[5];
/* number of cpl delta bit segments */
- uint_16 cpldeltnseg;
+ uint16_t cpldeltnseg;
/* coupling delta bit allocation offset */
- uint_16 cpldeltoffst[8];
+ uint16_t cpldeltoffst[8];
/* coupling delta bit allocation length */
- uint_16 cpldeltlen[8];
+ uint16_t cpldeltlen[8];
/* coupling delta bit allocation length */
- uint_16 cpldeltba[8];
+ uint16_t cpldeltba[8];
/* number of delta bit segments */
- uint_16 deltnseg[5];
+ uint16_t deltnseg[5];
/* fbw delta bit allocation offset */
- uint_16 deltoffst[5][8];
+ uint16_t deltoffst[5][8];
/* fbw delta bit allocation length */
- uint_16 deltlen[5][8];
+ uint16_t deltlen[5][8];
/* fbw delta bit allocation length */
- uint_16 deltba[5][8];
+ uint16_t deltba[5][8];
/* skip length exists */
- uint_16 skiple;
+ uint16_t skiple;
/* skip length */
- uint_16 skipl;
+ uint16_t skipl;
//Removed Feb 2000 -ah
+ //added Jul 2000 ++dent
/* channel mantissas */
- //uint_16 chmant[5][256];
+ uint16_t chmant[5][256];
/* coupling mantissas */
- uint_16 cplmant[256];
+// uint16_t cplmant[256];
+
+ //Added Jun 2000 -MaXX
+ /* coupling floats */
+ float cpl_flt[ 256 ];
//Removed Feb 2000 -ah
+ //added Jul 2000 ++dent
/* coupling mantissas */
- //uint_16 lfemant[7];
+ uint16_t lfemant[7];
/* -- Information not in the bitstream, but derived thereof -- */
/* Number of coupling sub-bands */
- uint_16 ncplsubnd;
+ uint16_t ncplsubnd;
/* Number of combined coupling sub-bands
* Derived from ncplsubnd and cplbndstrc */
- uint_16 ncplbnd;
+ uint16_t ncplbnd;
/* Number of exponent groups by channel
* Derived from strmant, endmant */
- uint_16 nchgrps[5];
+ uint16_t nchgrps[5];
/* Number of coupling exponent groups
* Derived from cplbegf, cplendf, cplexpstr */
- uint_16 ncplgrps;
+ uint16_t ncplgrps;
/* End mantissa numbers of fbw channels */
- uint_16 endmant[5];
+ uint16_t endmant[5];
/* Start and end mantissa numbers for the coupling channel */
- uint_16 cplstrtmant;
- uint_16 cplendmant;
+ uint16_t cplstrtmant;
+ uint16_t cplendmant;
/* Decoded exponent info */
- uint_16 fbw_exp[5][256];
- uint_16 cpl_exp[256];
- uint_16 lfe_exp[7];
+ uint16_t fbw_exp[5][256];
+ uint16_t cpl_exp[256];
+ uint16_t lfe_exp[7];
/* Bit allocation pointer results */
- uint_16 fbw_bap[5][256];
- uint_16 cpl_bap[256];
- uint_16 lfe_bap[7];
+ uint16_t fbw_bap[5][256];
+ uint16_t cpl_bap[256];
+ uint16_t lfe_bap[7];
- uint_32 magic3;
+ uint32_t magic3;
} audblk_t;