/********************************************************************** * Copyright (c) 1995 MPEG/audio software simulation group * All Rights Reserved * $Id: decoder.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: decoder.h,v $ * Revision 1.1  1996/04/18 03:39:59  rowlands * Initial revision * * 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                               * *								      * **********************************************************************//*************************************************************************  Decoder Include Files************************************************************************//*************************************************************************  Decoder Definitions************************************************************************/#define  DFLT_OPEXT        ".dec"  	/* default output file name extension */#define  DFLT_OPEXT_EXT	   ".ext" 	/* default input for extension file */#define	 FILTYP_DEC_AIFF   "AIFF"	/* '-> " . 7/13/92. sr */#define	 FILTYP_DEC_BNRY   "TEXT"	/* '-> " . 7/13/92. sr */#define	 CREATR_DEC_AIFF   "Sd2a"	/* '-> " . 7/13/92. sr */#define	 CREATR_DEC_BNRY   "????"	/* '-> " . 7/13/92. sr */#define   SYNC_WORD         (long) 0xfff#define   SYNC_WORD_LNGTH   12#define   MUTE              0#define   STEP		    0.03125	 /* 13.10.93 R.S. step for prediction */#define   PREDDEL           (2+7)        /* max. delay in prediction, HP 08-nov-94 *//*************************************************************************  Decoder Type Definitions************************************************************************//*************************************************************************  Decoder Variable External Declarations************************************************************************/extern int bits_in_frame;extern unsigned long frameNum;extern unsigned int ext_length; /*************************************************************************  Decoder Function Prototype Declarations************************************************************************//* The following functions are in the file "musicout.c" */#ifdef   PROTO_ARGSextern void   usage(void);#elseextern void   usage();#endif/* The following functions are in the file "decode.c" */#ifdef   PROTO_ARGSextern void   decode_info(Bit_stream_struc*, frame_params*);extern void   II_decode_bitalloc(Bit_stream_struc*, unsigned int[5][SBLIMIT],					   frame_params*, int*, int*);extern void   II_decode_scale(Bit_stream_struc*, unsigned int[5][SBLIMIT],					   unsigned int[5][SBLIMIT], unsigned int[5][3][SBLIMIT],					   frame_params*, int*, int*);extern void   II_buffer_sample(Bit_stream_struc*, unsigned int[5][3][SBLIMIT],					   unsigned int[5][SBLIMIT], frame_params*);extern void   II_buffer_samplemc(Bit_stream_struc*, unsigned int[5][3][SBLIMIT],					   unsigned int[5][SBLIMIT], frame_params*, int*);extern void   read_quantizer_table(double[17], double[17]);extern void   II_dequantize_sample(unsigned int[5][3][SBLIMIT],					   unsigned int[5][SBLIMIT], double[5][SBLIMIT][3][12],					   frame_params*, int*);extern void   II_dequantize_samplemc(unsigned int[5][3][SBLIMIT],					   unsigned int[5][SBLIMIT], double[5][SBLIMIT][3][12],					   frame_params*, int*, int*);extern void   read_scale_factor(double[SCALE_RANGE]);extern void   II_denormalize_sample(double[5][SBLIMIT][3][12],					   unsigned int[5][3][SBLIMIT], frame_params*, int, int*);extern void   II_denormalize_samplemc(double[5][SBLIMIT][3][12],					   unsigned int[5][3][SBLIMIT], frame_params*, int, int*,					   int*);extern void   create_syn_filter(double[64][SBLIMIT]);extern int    SubBandSynthesis (double*, int, long*);extern void   read_syn_window(double[HAN_SIZE]);extern void   window_sample(double*, double*);extern void   out_fifo(long[5][3][SBLIMIT], int, frame_params*, int, FILE*,					   unsigned long*);extern void   buffer_CRC(Bit_stream_struc*, unsigned int*);extern void   recover_CRC_error(long[5][3][SBLIMIT], int, frame_params*,					   FILE*, unsigned long*);extern void   mc_header(Bit_stream_struc*, frame_params*);extern int    mc_ext_header(void);extern int    mc_ext_error_check(void);extern void   mc_composite_status_info(Bit_stream_struc*, frame_params*);externvoiddematricing(	double (*pcm_sample)[SBLIMIT][3][12],	frame_params *fr_ps,	double (*pred_buf)[8][36+PREDDEL]);#elseextern void   decode_info();extern void   II_decode_bitalloc();extern void   II_decode_scale();extern void   II_buffer_sample();extern void   read_quantizer_table();extern void   II_dequantize_sample();extern void   read_scale_factor();extern void   II_denormalize_sample();extern void   create_syn_filter();extern int    SubBandSynthesis ();extern void   read_syn_window();extern void   window_sample();extern void   out_fifo();extern int    mc_ext_header();extern int    mc_ext_error_check();extern void   buffer_CRC();extern void   recover_CRC_error();#endif