/********************************************************************** * Copyright (c) 1995 MPEG/audio software simulation group * All Rights Reserved * $Id: common.h,v 1.1 1996/04/18 03:39:59 rowlands Exp $ * * MPEG/audio coding/decoding software, work in progress *   NOT for public distribution until verified and approved by the *   MPEG/audio committee. * * $Log: common.h,v $ * Revision 1.1  1996/04/18 03:39:59  rowlands * Initial revision * * Revision 1.4  1995/04/06  05:49:24  rowlands * Moved machine #define to makefile * * Revision 1.3  1995/04/06  05:01:42  rowlands * Ran decoder through protoize to convert to ANSI C. * * Revision 1.2  1995/04/06  04:56:00  rowlands * Added header, RCS info and cleaned up prototypes in initial revision. * **********************************************************************//********************************************************************** * VERSION 2.5                                                        * *   changes made since last update:                                  * *   date   programmers                comment                        * * 2/25/91  Douglas Wong        start of version 1.0 records          * * 3/06/91  Douglas Wong        rename setup.h to dedef.h             * *                              removed extraneous variables          * *                              removed window_samples (now part of   * *                              filter_samples)                       * * 3/07/91  Davis Pan           changed output file to "codmusic"     * * 5/10/91  Vish (PRISM)        Ported to Macintosh and Unix.         * *                              Incorporated new "out_fifo()" which   * *                              writes out last incomplete buffer.    * *                              Incorporated all AIFF routines which  * *                              are also compatible with SUN.         * *                              Incorporated user interface for       * *                              specifying sound file names.          * *                              Also incorporated user interface for  * *                              writing AIFF compatible sound files.  * * 27jun91  dpwe (Aware)        Added musicout and &sample_frames as  * *                              args to out_fifo (were glob refs).    * *                              Used new 'frame_params' struct.       * *                              Clean,simplify, track clipped output  * *                              and total bits/frame received.        * * 7/10/91  Earle Jennings      changed to floats to FLOAT            * *10/ 1/91  S.I. Sudharsanan,   Ported to IBM AIX platform.           * *          Don H. Lee,                                               * *          Peter W. Farrett                                          * *10/ 3/91  Don H. Lee          implemented CRC-16 error protection   * *                              newly introduced functions are        * *                              buffer_CRC and recover_CRC_error      * *                              Additions and revisions are marked    * *                              with "dhl" for clarity                * * 2/11/92  W. Joseph Carter    Ported new code to Macintosh.  Most   * *                              important fixes involved changing     * *                              16-bit ints to long or unsigned in    * *                              bit alloc routines for quant of 65535 * *                              and passing proper function args.     * *                              Removed "Other Joint Stereo" option   * *                              and made bitrate be total channel     * *                              bitrate, irrespective of the mode.    * *                              Fixed many small bugs & reorganized.  * ********************************************************************** *                                                                    * *                                                                    * *  MPEG/audio Phase 2 coding/decoding multichannel                   * *                                                                    * *  Version 1.0                                                       * *                                                                    * *  7/27/93        Susanne Ritscher,  IRT Munich                      * *                                                                    * *                  thanks to                                         * *                  Ralf Schwalbe,    Telekom FTZ Berlin              * *                  Heiko Purnhagen,  Uni Hannover                    * *                                                                    * *  Version 2.0                                                       * *                                                                    * *  8/27/93        Susanne Ritscher, IRT Munich                       * *                 Channel-Switching is working                       * *                                                                    * *  Version 2.1                                                       * *                                                                    * *  9/1/93         Susanne Ritscher,  IRT Munich                      * *                 all channels normalized                            * *                                                                    * *  Version 3.0                                                       * *                                                                    * *  06/16/94       Ralf Schwalbe, Telekom FTZ Berlin                  * *                 all sources and variables adapted due to MPEG-2 -  * *                 DIS from March 1994                                * *                  - dematrix and denormalize procedure              * *                  - new tc - allocation (0-7)                       * *                  - some new structures and variables as a basis    * *                    for further decoding modes                      * ********************************************************************** *								      * *  Version 1.0 Shareware                                             * *                                                                    * *  07/12/94       Ralf Schwalbe,  Telekom FTZ Berlin                 * *                 Tel: +49 30 6708 2406                              * *                 Fax: +49 30 6774 539                               * *								      * *  04/11/94	   Ralf Schwalbe. Telekom FTZ Berlin                  * *                  - decoding extension bitstream                    * *                  - some new subroutines, globale variables and     * *                    structures (important to handle the ext. bitst.)* *                  - changed all functions to ANSI-C funktion header * *		    - corrected some bugs to decode bitstreams > 512kB* *								      * *  Version 1.1 Shareware                                             * *                                                                    * *  07/12/94       Ralf Schwalbe,  Telekom FTZ Berlin                 * *                 Tel: +49 30 6708 2406                              * *                 Fax: +49 30 6774 539                               * *								      * **********************************************************************/#define VERSION "1.1"  /* R.S for Shareware *//*************************************************************************  Global Conditional Compile Switches************************************************************************//*#define PRINTOUT*//*#define UNIX	        */ 	 /* Unix conditional compile switch *//*#define MACINTOSH	*/	 /* Macintosh conditional compile switch *//*#define MS_DOS	*/	 /* IBM PC conditional compile switch				   Microsoft C ver. 6.0 */#ifdef  UNIX#define         TABLES_PATH     "tables/"  /* to find data files *//* name of environment variable holding path of table files */#define         MPEGTABENV      "MPEGTABLES"#define         PATH_SEPARATOR  "/"        /* how to build paths */#define      PROTO_ARGS                 /* unix gcc uses arg. prototypes */#endif  /* UNIX */#ifdef  MACINTOSH/* #define      TABLES_PATH ":tables:"  /* where to find data files */#define         PROTO_ARGS              /* Mac uses argument prototypes */#endif  /* MACINTOSH */#ifdef  MS_DOS#define         PROTO_ARGS  /* DOS uses argument prototypes */#endif  /* MS_DOS *//* MS_DOS and VMS do not define TABLES_PATH, so OpenTableFile will default   to finding the data files in the default directory *//*************************************************************************  Global Include Files************************************************************************/#include        <stdio.h>#include        <string.h>#include        <math.h>#ifdef  UNIX#include        <unistd.h>	 /* removed 92-08-05 shn */#include	<stdlib.h>       /* put in 92-08-05 shn */#endif  /* UNIX */#ifdef  MACINTOSH#include        <stdlib.h>#include        <console.h>#endif  /* MACINTOSH */#ifdef  MS_DOS/* #include	<alloc.h> */ /* removed 92-07-08 sr */#include	<malloc.h>   /* put in 92-07-08 sr *//* #include	<mem.h> */   /* removed 92-07-08 sr */#include <stdlib.h>#endif  /* MS_DOS */#define	SEEK_SET	0#define	SEEK_CUR	1#define	SEEK_END	2/*************************************************************************  Global Definitions************************************************************************/extern int pred_coef_table[8][14];  /* def. in decode.c */extern int read_ext_header,ext_error;extern unsigned long frameNum,ext_total;/* General Definitions */#ifdef  MS_DOS#define         FLOAT                   double#else#define         FLOAT                   float#endif#define         FALSE                   0#define         TRUE                    (!FALSE)#define         NULL_CHAR               '\0'#define         MAX_U_32_NUM            0xFFFFFFFF#define         PI                      3.14159265358979#define         PI4                     PI/4#define         PI64                    PI/64#define         LN_TO_LOG10             0.2302585093#define         VOL_REF_NUM             0#define         MPEG_AUDIO_ID           1#define         MAC_WINDOW_SIZE         24#define         MONO                    1#define         STEREO                  2#define         BITS_IN_A_BYTE          8#define         WORD                    16#define         MAX_NAME_SIZE           81#define         SBLIMIT                 32#define         FFT_SIZE                1024#define         HAN_SIZE                512#define         SCALE_BLOCK             12#define         SCALE_RANGE             64#define         SCALE                   32768.0#define         CRC16_POLYNOMIAL        0x8005/* Sync - Word for multichannel extern bitstream */#define		EXT_SYNCWORD	        0x7ff/* MPEG Header Definitions - Mode Values */#define         MPG_MD_STEREO           0#define         MPG_MD_JOINT_STEREO     1#define         MPG_MD_DUAL_CHANNEL     2#define		MPG_MD_MONO		3#define		MPG_MD_NONE		4/* Multi-channel Definitions - Mode Values */#define		MPG_MC_STEREO 	       0#define		MPG_MC_NONE	       6/* AIFF Definitions */#ifndef	MS_DOS#define         IFF_ID_FORM             "FORM" /* HP400 unix v8.0: double qoutes 1992-07-24 shn */#define         IFF_ID_AIFF             "AIFF"#define         IFF_ID_COMM             "COMM"#define         IFF_ID_SSND             "SSND"#define         IFF_ID_MPEG             "MPEG"#else#define         IFF_ID_FORM             "FORM"#define         IFF_ID_AIFF             "AIFF"#define         IFF_ID_COMM             "COMM"#define         IFF_ID_SSND             "SSND"#define         IFF_ID_MPEG             "MPEG"#endif/* "bit_stream.h" Definitions */#define         MINIMUM         4    /* Minimum size of the buffer in bytes */#define         MAX_LENGTH      32   /* Maximum length of word written or										read from bit stream */#define         READ_MODE       0#define         WRITE_MODE      1#define         ALIGNING        8#define         BINARY          0#define         ASCII           1#define         BS_FORMAT       ASCII /* BINARY or ASCII = 2x bytes */#define         BUFFER_SIZE     4096#define         MIN(A, B)       ((A) < (B) ? (A) : (B))#define         MAX(A, B)       ((A) > (B) ? (A) : (B))/*************************************************************************  Global Type Definitions************************************************************************//* Structure for Reading Layer II Allocation Tables from File */typedef struct {		unsigned int    steps;		unsigned int    bits;		unsigned int    group;		unsigned int    quant;} sb_alloc, *alloc_ptr;