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DECODER.H
资源名称：mpeg.zip　[点击查看]
上传用户：njqiyou
上传日期：2007-01-08
资源大小：574k
文件大小：18k
源码类别：

mpeg/mp3

开发平台：

C/C++

DECODER.H：源码内容
  1. /**********************************************************************
  2.  * ISO MPEG Audio Subgroup Software Simulation Group (1996)
  3.  * ISO 13818-3 MPEG-2 Audio Multichannel Decoder
  4.  *
  5.  * $Id: decoder.h 1.11 1996/04/18 05:37:23 rowlands Exp $
  6.  *
  7.  * $Log: decoder.h $
  8.  * Revision 1.11  1996/04/18 05:37:23  rowlands
  9.  * Release following Florence meeting
  10.  *
  11.  * Revision 1.10  1996/02/12 07:13:06  rowlands
  12.  * Release following Munich meeting
  13.  *
  14.  * Revision 1.9.1.1  1996/01/20  17:28:45  rowlands
  15.  * Received from Ralf Schwalbe (Telekom FTZ) - includes prediction
  16.  *
  17.  * Revision 1.7.1.3  1995/08/14  08:13:06  tenkate
  18.  * ML-LSF added Warner ten Kate 7/8/95 (Philips)
  19.  *
  20.  * Revision 1.7.1.1  1995/07/14  06:12:46  rowlands
  21.  * Updated dynamic crosstalk from FTZ: revision FTZ_03
  22.  *
  23.  * Revision 1.3.3.1  1995/06/16  08:00:46  rowlands
  24.  * Input from Sang Wook Kim (Samsung AIT)
  25.  *
  26.  * Revision 1.3.1.1  1995/06/14  04:35:34  rowlands
  27.  * Added declaration for dematrix procedure 2 routines.
  28.  *
  29.  **********************************************************************/
  31. /**********************************************************************
  32.  *   date   programmers                comment                        *
  33.  * 2/25/91  Douglas Wong        start of version 1.0 records          *
  34.  * 3/06/91  Douglas Wong        rename setup.h to dedef.h             *
  35.  *                              removed extraneous variables          *
  36.  *                              removed window_samples (now part of   *
  37.  *                              filter_samples)                       *
  38.  * 3/07/91  Davis Pan           changed output file to "codmusic"     *
  39.  * 5/10/91  Vish (PRISM)        Ported to Macintosh and Unix.         *
  40.  *                              Incorporated new "out_fifo()" which   *
  41.  *                              writes out last incomplete buffer.    *
  42.  *                              Incorporated all AIFF routines which  *
  43.  *                              are also compatible with SUN.         *
  44.  *                              Incorporated user interface for       *
  45.  *                              specifying sound file names.          *
  46.  *                              Also incorporated user interface for  *
  47.  *                              writing AIFF compatible sound files.  *
  48.  * 27jun91  dpwe (Aware)        Added musicout and &sample_frames as  *
  49.  *                              args to out_fifo (were glob refs).    *
  50.  *                              Used new 'frame_params' struct.       *
  51.  *                              Clean,simplify, track clipped output  *
  52.  *                              and total bits/frame received.        *
  53.  * 7/10/91  Earle Jennings      changed to floats to FLOAT            *
  54.  *10/ 1/91  S.I. Sudharsanan,   Ported to IBM AIX platform.           *
  55.  *          Don H. Lee,                                               *
  56.  *          Peter W. Farrett                                          *
  57.  *10/ 3/91  Don H. Lee          implemented CRC-16 error protection   *
  58.  *                              newly introduced functions are        *
  59.  *                              buffer_CRC and recover_CRC_error      *
  60.  *                              Additions and revisions are marked    *
  61.  *                              with "dhl" for clarity                *
  62.  * 2/11/92  W. Joseph Carter    Ported new code to Macintosh.  Most   *
  63.  *                              important fixes involved changing     *
  64.  *                              16-bit ints to long or unsigned in    *
  65.  *                              bit alloc routines for quant of 65535 *
  66.  *                              and passing proper function args.     *
  67.  *                              Removed "Other Joint Stereo" option   *
  68.  *                              and made bitrate be total channel     *
  69.  *                              bitrate, irrespective of the mode.    *
  70.  *                              Fixed many small bugs & reorganized.  *
  71.  **********************************************************************
  72.  *                                                                    *
  73.  *                                                                    *
  74.  *  MPEG/audio Phase 2 coding/decoding multichannel                   *
  75.  *                                                                    *
  76.  *  Version 1.0                                                       *
  77.  *                                                                    *
  78.  *  7/27/93        Susanne Ritscher,  IRT Munich                      *
  79.  *                                                                    *
  80.  *                  thanks to                                         *
  81.  *                  Ralf Schwalbe,    Telekom FTZ Berlin              *
  82.  *                  Heiko Purnhagen,  Uni Hannover                    *
  83.  *                                                                    *
  84.  *  Version 2.0                                                       *
  85.  *                                                                    *
  86.  *  8/27/93        Susanne Ritscher, IRT Munich                       *
  87.  *                 Channel-Switching is working                       *
  88.  *                                                                    *
  89.  *  Version 2.1                                                       *
  90.  *                                                                    *
  91.  *  9/1/93         Susanne Ritscher,  IRT Munich                      *
  92.  *                 all channels normalized                            *
  93.  *                                                                    *
  94.  *  Version 3.0                                                       *
  95.  *                                                                    *
  96.  *  06/16/94       Ralf Schwalbe, Telekom FTZ Berlin                  *
  97.  *                 all sources and variables adapted due to MPEG-2 -  *
  98.  *                 DIS from March 1994                                *
  99.  *                  - dematrix and denormalize procedure              *
  100.  *                  - new tc - allocation (0-7)                       *
  101.  *                  - some new structures and variables as a basis    *
  102.  *                    for further decoding modes                      *
  103.  **********************************************************************
  104.  *       *
  105.  *  Version 1.0                                                       *
  106.  *                                                                    *
  107.  *  11/04/94       Ralf Schwalbe,  Telekom FTZ Berlin                 *
  108.  *                  - decoding tc-allocation                          *
  109.  *                  - some new subroutines, globale variables and     *
  110.  *                    structures (important to handle the ext. bitst.)*
  111.  *                  - changed all functions to ANSI-C funktion header *
  112.  *     - corrected some bugs to decode bitstreams > 512kB*
  113.  *       *
  114.  *  Version 1.1                                                       *
  115.  *                                                                    *
  116.  *  12/07/94       Ralf Schwalbe,  Telekom FTZ Berlin                 *
  117.  *                  - decoding extension bitstream                    *
  118.  *                                                                    *
  119.  *  Version 1.1.1                                                     *
  120.  *                 Ralf Schwalbe, Telekom FTZ Berlin                  *
  121.  *                  - fixed some bugs                                 *
  122.  *                                                                    *
  123.  *  Version 1.2                                                       *
  124.  *                                                                    *
  125.  *  6/21/95       Ralf Schwalbe, Deutsche Telekom FTZ Berlin          *
  126.  *                 - decoding dynamic crosstalk                      *
  127.  *                  - decoding phantom center                         * 
  128.  *                  - decoding MPEG1 compatible part only (stereo)    *
  129.  *                  - corrected some settings and bugs                *
  130.  *                                                                    *   
  131.  *  7/12/95   Ralf Schwalbe, Deutsche Telekom FTZ Berlin          *
  132.  *     - corrected dynamic crosstalk        *
  133.  *     - 3/2,3/1,3/0,2/1, channel configurations         *
  134.  *                    are working                                     *
  135.  *          *
  136.  * 10/31/95   Ralf Schwalbe, Deutsche Telekom FTZ Berlin       *
  137.  *     - decoding of LFE-channel is working         *
  138.  *     - corrected any settings and bugs       *
  139.  *     - corrected table-switch for channel mode < 3/2   *
  140.  *       and tc-allocation / dyn-crosstalk       *
  141.  *     - still a problem with compl. bitstream 18/19     *
  142.  *       *
  143.  * 01/12/96   Ralf Schwalbe, Deutsche Telekom TZ Darmstadt       *
  144.  *     - decoder prediction installed       *
  145.  *     - problem with compl. bitstream 19 solved,        *
  146.  *          *
  147.  *  Version 2.0                                                       *
  148.  *                                                                    *
  149.  * 01/28/97       Frans de Bont, Philips Sound & Vision, Eindhoven    *
  150.  *     - simultaneous use of tc allocation and dynamic   *
  151.  *       crosstalk working for all configurations       *
  152.  *     - prediction working for all configurations       *
  153.  *     - layer 1 MC working       *
  154.  *     - variable bit rate and extension bitstreams      *
  155.  *     - fully compliant to 13818-3.2                    *
  156.  *                                                                    *       *     
  157.  **********************************************************************/
  158. /**********************************************************************
  159.  *                                                                    *
  160.  *  06/06/95       Yeon Bae Thomas Kim,  Samsung AIT                  *
  161.  *    ancillary data is working       *
  162.  *       *
  163.  **********************************************************************/
  165. /***********************************************************************
  166. *
  167. *  Decoder Include Files
  168. *
  169. ***********************************************************************/
  171. /***********************************************************************
  172. *
  173. *  Decoder Definitions
  174. *
  175. ***********************************************************************/
  177. #define  DFLT_IPEXT_MPG    ".mpg"  /* default input for base file */
  178. #define  DFLT_IPEXT_EXT    ".ext"  /* default input for extension file */
  179. #define  DFLT_OPEXT_DEC    ".dec"   /* default output file name extension */
  180. #define  DFLT_OPEXT_LFE    "_lfe.dec"  /* 10/31/95 R.S. output for lfe pcm-file */
  181. #define  DFLT_OPEXT_ML    ".ml"  /* default MultiLingual output file name extension */
  182. #define  FILTYP_DEC_AIFF   "AIFF" /* '-> " . 7/13/92. sr */
  183. #define  FILTYP_DEC_BNRY   "TEXT" /* '-> " . 7/13/92. sr */
  184. #define  CREATR_DEC_AIFF   "Sd2a" /* '-> " . 7/13/92. sr */
  185. #define  CREATR_DEC_BNRY   "????" /* '-> " . 7/13/92. sr */
  187. #define   SYNC_WORD         (long) 0xfff
  188. #define   SYNC_WORD_LNGTH   12
  190. #define   MUTE              0
  191. #define   STEP     0.03125  /* 13.10.93 R.S. step for prediction */
  192. #define   PREDDEL           (2+7)        /* max. delay in prediction, HP 08-nov-94 */
  194. #define   EXTENSION_CRC_CHECK
  195. /***********************************************************************
  196. *
  197. *  Decoder Type Definitions
  198. *
  199. ***********************************************************************/
  201. /***********************************************************************
  202. *
  203. *  Decoder Variable External Declarations
  204. *
  205. ***********************************************************************/
  206.  
  207. /***********************************************************************
  208. *
  209. *  Decoder Function Prototype Declarations
  210. *
  211. ***********************************************************************/
  213. /* The following functions are in the file "musicout.c" */
  215. #ifdef   PROTO_ARGS
  216. extern void   usage(void);
  217. #else
  218. extern void   usage();
  219. #endif
  221. /* The following functions are in the file "decode.c" */
  223. #ifdef   PROTO_ARGS
  224. extern void   decode_info(Bit_stream*, frame_params*);
  225. extern void   mc_header(Bit_stream*, frame_params*);
  226. extern void   mc_composite_status_info(Bit_stream*, frame_params*, int, int);
  227. #ifdef Augmentation_7ch
  228. extern void   mc_aug_composite_status_info(Bit_stream*, frame_params*, int, int);
  229. #endif
  230. extern void   I_decode_bitalloc(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT], int);
  231. extern void   II_decode_bitalloc(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT], int);
  232. extern void   II_decode_bitalloc_mc(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT], int*, int*, int);
  233. #ifdef Augmentation_7ch
  234. extern void   II_decode_bitalloc_aug(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT], int*, int*, int);
  235. #endif
  236. extern void   II_decode_bitalloc_ml(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT], int*);
  237. extern void   I_decode_scale(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT],
  238.    unsigned int[7][3][SBLIMIT],
  239.    int, int);
  240. extern void   II_decode_scale(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT],
  241.    unsigned int[7][SBLIMIT], unsigned int[7][3][SBLIMIT],
  242.    int*, int*, int);
  243. extern void   II_decode_scale_ml(Bit_stream*, frame_params*, unsigned int[7][SBLIMIT],
  244.    unsigned int[7][SBLIMIT], unsigned int[7][3][SBLIMIT],
  245.    int*);
  246. extern void   I_buffer_sample(Bit_stream*, frame_params*, unsigned int[7][3][SBLIMIT],
  247.    unsigned int[7][SBLIMIT]);
  248. extern void   II_buffer_sample(Bit_stream*, frame_params*, unsigned int[7][3][SBLIMIT],
  249.    unsigned int[7][SBLIMIT]);
  250. extern void   II_buffer_sample_mc(Bit_stream*, frame_params*, unsigned int[7][3][SBLIMIT],
  251.    unsigned int[7][SBLIMIT], int, int, int);
  252. #ifdef Augmentation_7ch
  253. extern void   II_buffer_sample_aug(Bit_stream*, frame_params*, unsigned int[7][3][SBLIMIT],
  254.    unsigned int[7][SBLIMIT], int);
  255. #endif
  256. extern void   II_buffer_sample_ml(Bit_stream*, frame_params*, unsigned int[7][3][SBLIMIT],
  257.    unsigned int[7][SBLIMIT], int*);
  258. extern void   I_dequantize_sample(unsigned int[7][3][SBLIMIT], int,
  259.    unsigned int[7][SBLIMIT], double[7][SBLIMIT][3][12],
  260.    frame_params*, int*);
  261. extern void   II_dequantize_sample(unsigned int[7][3][SBLIMIT],
  262.    unsigned int[7][SBLIMIT], double[7][SBLIMIT][3][12],
  263.    frame_params*, int*);
  264. extern void   II_dequantize_sample_mc(unsigned int[7][3][SBLIMIT],
  265.    unsigned int[7][SBLIMIT], double[7][SBLIMIT][3][12],
  266.    frame_params*, int, int, int*);
  267. #ifdef Augmentation_7ch
  268. extern void   II_dequantize_sample_aug(unsigned int[7][3][SBLIMIT],
  269.    unsigned int[7][SBLIMIT], double[7][SBLIMIT][3][12],
  270.    frame_params*, int*);
  271. #endif
  272. extern void   II_dequantize_sample_ml(unsigned int[7][3][SBLIMIT],
  273.    unsigned int[7][SBLIMIT], double[7][SBLIMIT][3][12],
  274.    frame_params*, int*, int*);
  275. extern void   II_lfe_calc(frame_params*);
  276. extern void   I_denormalize_sample(double[7][SBLIMIT][3][12],
  277.    unsigned int[7][3][SBLIMIT], int, frame_params*, int*);
  278. extern void   II_denormalize_sample(double[7][SBLIMIT][3][12],
  279.    unsigned int[7][3][SBLIMIT], frame_params*, int, int*);
  280. extern void   II_denormalize_sample_mc(double[7][SBLIMIT][3][12],
  281.    unsigned int[7][3][SBLIMIT], frame_params*, int, int, int, int*);
  282. #ifdef Augmentation_7ch
  283. extern void   II_denormalize_sample_aug(double[7][SBLIMIT][3][12],
  284.    unsigned int[7][3][SBLIMIT], frame_params*, int, int*);
  285. #endif
  286. extern void   II_denormalize_sample_ml(double[7][SBLIMIT][3][12],
  287.    unsigned int[7][3][SBLIMIT], frame_params*, int, int*, int*);
  288. extern int    SubBandSynthesis(double*, int, long*);
  289. extern int    SubBandSynthesis_ml(double*, int, long*);
  290. extern void   out_fifo(long[7][3][SBLIMIT], int, frame_params*, int, FILE*, unsigned long*,int);
  291. extern void   out_fifo_ml(long[7][3][SBLIMIT], int, frame_params*, int, FILE*, unsigned long*);
  292. extern void   buffer_CRC(Bit_stream*, unsigned int*);
  293. extern void   recover_CRC_error(long[7][3][SBLIMIT], int, frame_params*,FILE*,unsigned long*,int);
  294. extern void   dematricing_mc(double[7][SBLIMIT][3][12], frame_params*, double[2][8][36+PREDDEL]);
  295. #ifdef Augmentation_7ch
  296. extern void   dematricing_aug(double[7][SBLIMIT][3][12], frame_params*);
  297. #endif
  298. extern void   denormalizing_mc(double[7][SBLIMIT][3][12], frame_params*, int); 
  299. #ifdef Augmentation_7ch
  300. extern void   denormalizing_aug(double[7][SBLIMIT][3][12], frame_params*); 
  301. #endif
  302. #else
  303. extern void   decode_info();
  304. extern void   mc_header();
  305. extern void   mc_composite_status_info();
  306. #ifdef Augmentation_7ch
  307. extern void   mc_aug_composite_status_info();
  308. #endif
  309. extern void   I_decode_bitalloc();
  310. extern void   II_decode_bitalloc();
  311. extern void   II_decode_bitalloc_mc();
  312. #ifdef Augmentation_7ch
  313. extern void   II_decode_bitalloc_aug();
  314. #endif
  315. extern void   II_decode_bitalloc_ml();
  316. extern void   I_decode_scale();
  317. extern void   II_decode_scale();
  318. extern void   II_decode_scale_ml();
  319. extern void   I_buffer_sample();
  320. extern void   II_buffer_sample();
  321. extern void   II_buffer_sample_mc();
  322. #ifdef Augmentation_7ch
  323. extern void   II_buffer_sample_aug();
  324. #endif
  325. extern void   II_buffer_sample_ml();
  326. extern void   I_dequantize_sample();
  327. extern void   II_dequantize_sample();
  328. extern void   II_dequantize_sample_mc();
  329. #ifdef Augmentation_7ch
  330. extern void   II_dequantize_sample_aug();
  331. #endif
  332. extern void   II_dequantize_sample_ml();
  333. extern void   II_lfe_calc();
  334. extern void   I_denormalize_sample();
  335. extern void   II_denormalize_sample();
  336. extern void   II_denormalize_sample_mc();
  337. #ifdef Augmentation_7ch
  338. extern void   II_denormalize_sample_aug();
  339. #endif
  340. extern void   II_denormalize_sample_ml();
  341. extern int    SubBandSynthesis();
  342. extern int    SubBandSynthesis_ml();
  343. extern void   out_fifo();
  344. extern void   out_fifo_ml();
  345. extern void   buffer_CRC();
  346. extern void   recover_CRC_error();
  347. extern void   dematricing_mc();
  348. #ifdef Augmentation_7ch
  349. extern void   dematricing_aug();
  350. #endif
  351. extern void   denormalizing_mc(); 
  352. #ifdef Augmentation_7ch
  353. extern void   denormalizing_aug(); 
  354. #endif
  355. #endif