Version 0.90vdr-0.90

- Modified the display of the channel group separators (thanks to Markus Lang
  for this suggestion).
- Added support for replaying DVDs (thanks to Andreas Schultz). See INSTALL for
  instructions on how to compile VDR with DVD support.
- Fixed replay progress display in case replay is paused while watching an
  ongoing recording.
- Ringbuffer uses semaphores to signal empty/full conditions.
- Fixed calculating the timeout value in cFile::FileReady() (thanks to
  Wolfgang Henselmann-Weiss).

1 files changed, 344 insertions, 0 deletions

diff --git a/ac3dec/ac3_internal.h b/ac3dec/ac3_internal.h
new file mode 100644
index 0000000..235189e
--- /dev/null
+++ b/ac3dec/ac3_internal.h
@@ -0,0 +1,344 @@
+/* 
+ *    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
+
+/* 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 uint_32 error_flag;
+
+/* 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
+{
+	uint_32	magic;
+	/* Sync word == 0x0B77 */
+	 uint_16   syncword; 
+	/* crc for the first 5/8 of the sync block */
+	/* uint_16   crc1; */
+	/* Stream Sampling Rate (kHz) 0 = 48, 1 = 44.1, 2 = 32, 3 = reserved */
+	uint_16		fscod;	
+	/* Frame size code */
+	uint_16		frmsizecod;
+
+	/* Information not in the AC-3 bitstream, but derived */
+	/* Frame size in 16 bit words */
+	uint_16 frame_size;
+	/* Bit rate in kilobits */
+	uint_16 bit_rate;
+	/* sampling rate in hertz */
+	uint_32 sampling_rate;
+
+} syncinfo_t;
+
+typedef struct bsi_s
+{
+	uint_32	magic;
+	/* Bit stream identification == 0x8 */
+	uint_16 bsid;	
+	/* Bit stream mode */
+	uint_16 bsmod;
+	/* Audio coding mode */
+	uint_16 acmod;
+	/* If we're using the centre channel then */
+		/* centre mix level */
+		uint_16 cmixlev;
+	/* If we're using the surround channel then */
+		/* surround mix level */
+		uint_16 surmixlev;
+	/* If we're in 2/0 mode then */
+		/* Dolby surround mix level - NOT USED - */
+		uint_16 dsurmod;
+	/* Low frequency effects on */
+	uint_16 lfeon;
+	/* Dialogue Normalization level */
+	uint_16 dialnorm;
+	/* Compression exists */
+	uint_16 compre;
+		/* Compression level */
+		uint_16 compr;
+	/* Language code exists */
+	uint_16 langcode;
+		/* Language code */
+		uint_16 langcod;
+	/* Audio production info exists*/
+	uint_16 audprodie;
+		uint_16 mixlevel;
+		uint_16 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;
+	/* Copyright bit */
+	uint_16 copyrightb;
+	/* Original bit */
+	uint_16 origbs;
+	/* Timecode 1 exists */
+	uint_16 timecod1e;
+		/* Timecode 1 */
+		uint_16 timecod1;
+	/* Timecode 2 exists */
+	uint_16 timecod2e;
+		/* Timecode 2 */
+		uint_16 timecod2;
+	/* Additional bit stream info exists */
+	uint_16 addbsie;
+		/* Additional bit stream length - 1 (in bytes) */
+		uint_16 addbsil;
+		/* Additional bit stream information (max 64 bytes) */
+		uint_8	addbsi[64];
+
+	/* Information not in the AC-3 bitstream, but derived */
+	/* Number of channels (excluding LFE)
+	 * Derived from acmod */
+	uint_16 nfchans;
+} bsi_t;
+
+
+/* more pain */
+typedef struct audblk_s
+{
+	uint_32	magic1;
+	/* block switch bit indexed by channel num */
+	uint_16 blksw[5];
+	/* dither enable bit indexed by channel num */
+	uint_16 dithflag[5];
+	/* dynamic range gain exists */
+	uint_16 dynrnge;
+		/* dynamic range gain */
+		uint_16 dynrng;
+	/* if acmod==0 then */
+	/* dynamic range 2 gain exists */
+	uint_16 dynrng2e;
+		/* dynamic range 2 gain */
+		uint_16 dynrng2;
+	/* coupling strategy exists */
+	uint_16 cplstre;
+		/* coupling in use */
+		uint_16 cplinu;
+			/* channel coupled */
+			uint_16 chincpl[5];
+			/* if acmod==2 then */
+				/* Phase flags in use */
+				uint_16 phsflginu;
+			/* coupling begin frequency code */
+			uint_16 cplbegf;
+			/* coupling end frequency code */
+			uint_16 cplendf;
+			/* coupling band structure bits */
+			uint_16 cplbndstrc[18];
+			/* Do coupling co-ords exist for this channel? */
+			uint_16 cplcoe[5];
+			/* Master coupling co-ordinate */
+			uint_16 mstrcplco[5];
+			/* Per coupling band coupling co-ordinates */
+			uint_16 cplcoexp[5][18];
+			uint_16 cplcomant[5][18];
+			/* Phase flags for dual mono */
+			uint_16 phsflg[18];
+	/* Is there a rematrixing strategy */
+	uint_16 rematstr;
+		/* Rematrixing bits */
+		uint_16 rematflg[4];
+	/* Coupling exponent strategy */
+	uint_16 cplexpstr;
+	/* Exponent strategy for full bandwidth channels */
+	uint_16 chexpstr[5];
+	/* Exponent strategy for lfe channel */
+	uint_16 lfeexpstr;
+	/* Channel bandwidth for independent channels */
+	uint_16 chbwcod[5];
+		/* The absolute coupling exponent */
+		uint_16 cplabsexp;
+		/* Coupling channel exponents (D15 mode gives 18 * 12 /3  encoded exponents */
+		uint_16 cplexps[18 * 12 / 3];
+	/* Sanity checking constant */
+	uint_32	magic2;
+	/* fbw channel exponents */
+	uint_16 exps[5][252 / 3];
+	/* channel gain range */
+	uint_16 gainrng[5];
+	/* low frequency exponents */
+	uint_16 lfeexps[3];
+
+	/* Bit allocation info */
+	uint_16 baie;
+		/* Slow decay code */
+		uint_16 sdcycod;
+		/* Fast decay code */
+		uint_16 fdcycod;
+		/* Slow gain code */
+		uint_16 sgaincod;
+		/* dB per bit code */
+		uint_16 dbpbcod;
+		/* masking floor code */
+		uint_16 floorcod;
+
+	/* SNR offset info */
+	uint_16 snroffste;
+		/* coarse SNR offset */
+		uint_16 csnroffst;
+		/* coupling fine SNR offset */
+		uint_16 cplfsnroffst;
+		/* coupling fast gain code */
+		uint_16 cplfgaincod;
+		/* fbw fine SNR offset */
+		uint_16 fsnroffst[5];
+		/* fbw fast gain code */
+		uint_16 fgaincod[5];
+		/* lfe fine SNR offset */
+		uint_16 lfefsnroffst;
+		/* lfe fast gain code */
+		uint_16 lfefgaincod;
+	
+	/* Coupling leak info */
+	uint_16 cplleake;
+		/* coupling fast leak initialization */
+		uint_16 cplfleak;
+		/* coupling slow leak initialization */
+		uint_16 cplsleak;
+	
+	/* delta bit allocation info */
+	uint_16 deltbaie;
+		/* coupling delta bit allocation exists */
+		uint_16 cpldeltbae;
+		/* fbw delta bit allocation exists */
+		uint_16 deltbae[5];
+		/* number of cpl delta bit segments */
+		uint_16 cpldeltnseg;
+			/* coupling delta bit allocation offset */
+			uint_16 cpldeltoffst[8];
+			/* coupling delta bit allocation length */
+			uint_16 cpldeltlen[8];
+			/* coupling delta bit allocation length */
+			uint_16 cpldeltba[8];
+		/* number of delta bit segments */
+		uint_16 deltnseg[5];
+			/* fbw delta bit allocation offset */
+			uint_16 deltoffst[5][8];
+			/* fbw delta bit allocation length */
+			uint_16 deltlen[5][8];
+			/* fbw delta bit allocation length */
+			uint_16 deltba[5][8];
+
+	/* skip length exists */
+	uint_16 skiple;
+		/* skip length */
+		uint_16 skipl;
+
+	//Removed Feb 2000 -ah
+	/* channel mantissas */
+	//uint_16 chmant[5][256];
+
+	/* coupling mantissas */
+	uint_16 cplmant[256];
+
+	//Removed Feb 2000 -ah
+	/* coupling mantissas */
+	//uint_16 lfemant[7];
+
+
+	/*  -- Information not in the bitstream, but derived thereof  -- */
+
+	/* Number of coupling sub-bands */
+	uint_16 ncplsubnd;
+
+	/* Number of combined coupling sub-bands
+	 * Derived from ncplsubnd and cplbndstrc */
+	uint_16 ncplbnd;
+
+	/* Number of exponent groups by channel
+	 * Derived from strmant, endmant */
+	uint_16 nchgrps[5];
+
+	/* Number of coupling exponent groups
+	 * Derived from cplbegf, cplendf, cplexpstr */
+	uint_16 ncplgrps;
+			
+	/* End mantissa numbers of fbw channels */
+	uint_16 endmant[5];
+
+	/* Start and end mantissa numbers for the coupling channel */
+	uint_16 cplstrtmant;
+	uint_16 cplendmant;
+
+	/* Decoded exponent info */
+	uint_16 fbw_exp[5][256];
+	uint_16 cpl_exp[256];
+	uint_16 lfe_exp[7];
+
+	/* Bit allocation pointer results */
+	uint_16 fbw_bap[5][256];
+	uint_16 cpl_bap[256];
+	uint_16 lfe_bap[7];
+	
+	uint_32	magic3;
+} audblk_t;
+
+