English
COMMON.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：22k
源码类别：
mpeg/mp3
开发平台：
C/C++
- /**********************************************************************
- * ISO MPEG Audio Subgroup Software Simulation Group (1996)
- * ISO 13818-3 MPEG-2 Audio Multichannel Encoder
- *
- * $Id: common.h 2.0 1996/02/12 07:18:32 rowlands Exp $
- *
- * $Log: common.h $
- * Revision 2.0 1996/02/12 07:18:32 rowlands
- * Release following Munich meeting
- *
- * Revision 1.5.2.1 1995/11/06 04:19:12 rowlands
- * Received from Uwe Felderhoff (IRT)
- *
- * Revision 1.7 1995/08/14 07:52:40 tenkate
- * ML-LSF added Warner ten Kate 7/8/95 (Philips)
- * struct frame_params extended
- *
- * Revision 1.6 1995/07/31 07:46:45 tenkate
- * typedef frame_params updated for phantom coding, 25/07/95 WtK
- *
- * Revision 1.4.2.1 1995/06/16 03:46:42 rowlands
- * Input from Susanne Ritscher (IRT)
- *
- **********************************************************************/
- /**********************************************************************
- * date programmers comment *
- * 2/25/91 Doulas Wong, start of version 1.0 records *
- * Davis Pan *
- * 5/10/91 W. Joseph Carter Reorganized & renamed all ".h" files *
- * into "common.h" and "encoder.h". *
- * Ported to Macintosh and Unix. *
- * Added additional type definitions for *
- * AIFF, double/SANE and "bitstream.c". *
- * Added function prototypes for more *
- * rigorous type checking. *
- * 27jun91 dpwe (Aware) Added "alloc_*" defs & prototypes *
- * Defined new struct 'frame_params'. *
- * Changed info.stereo to info.mode_ext *
- * #define constants for mode types *
- * Prototype arguments if PROTO_ARGS *
- * 5/28/91 Earle Jennings added MS_DOS definition *
- * MsDos function prototype declarations *
- * 7/10/91 Earle Jennings added FLOAT definition as double *
- *10/ 3/91 Don H. Lee implemented CRC-16 error protection *
- * 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. *
- * Modified some function prototypes. *
- * Changed BUFFER_SIZE back to 4096. *
- * 8 jul 92 Susanne Ritscher MS-DOS, MSC 6.0 port fixes. *
- *19 aug 92 Soren H. Nielsen Printout of bit allocation. *
- * UNIX port fixes. MS-DOS file name *
- * extensions fix *
- * dec 92 Susanne Ritscher Changed to multi-channel with several *
- * options *
- **********************************************************************
- * *
- * *
- * MPEG/audio Phase 2 coding/decoding multichannel *
- * *
- * 7/27/93 Susanne Ritscher, IRT Munich *
- * 8/27/93 Susanne Ritscher, IRT Munich *
- * Channel-Switching is working *
- * 9/1/93 Susanne Ritscher, IRT Munich *
- * all channels normalized *
- * 9/20/93 channel-switching is only performed at a *
- * certain limit of TC_ALLOC dB, which is included *
- * in encoder.h *
- * *
- * Version 1.0 *
- * *
- * 07/12/94 Susanne Ritscher, IRT Munich *
- * *
- * Version 1.1 *
- * *
- * 02/23/95 Susanne Ritscher, IRT Munich *
- * corrected some bugs *
- * extension bitstream is working *
- * *
- * Version 2.0 *
- * *
- * 01/28/97 Frans de Bont, Philips Sound & Vision, Eindhoven *
- * - dynamic crosstalk working for all configurations*
- * - prediction working for all configurations *
- * - extension bitstream fixed *
- * - fully compliant to DIS 13818-3.2 *
- * * *
- **********************************************************************/
- /***********************************************************************
- *
- * Global Conditional Compile Switches
- *
- ***********************************************************************/
- #define PRINTOUT
- #define DEBUG
- /*#define MACINTOSH */ /* Macintosh conditional compile switch */
- /*#define MS_DOS */ /* IBM PC conditional compile switch
- Microsoft C ver. 6.0 */
- #define VERSION "$Revision: 2.0 $"
- #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 */
- /***********************************************************************
- *
- * Global Definitions
- *
- ***********************************************************************/
- /* General Definitions */
- #ifdef MS_DOS
- #define FLOAT double
- #else
- #define FLOAT float
- #endif
- #define FALSE 0
- #define TRUE (!FALSE)
- #define NULL_CHAR ' '
- #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 63
- #define SCALE 32768
- #define CRC16_POLYNOMIAL 0x8005
- #define MAX_PRED_COEFF 3.96875 /* gleichfoermige Quantisierung der */
- /* Praediktorkoeff. im Bereich */
- /* [-MAX_PRED_COEF .. +MAX_PRED_COEF] */
- #define CHANMAX1 5
- #define CHANMAX2 7
- #define CHANMAX3 12
- #define SBGRS 12
- /* Channels */
- #define L0 0
- #define R0 1
- #define C 2
- #define LS 3
- #define RS 4
- #define L 5
- #define R 6
- #define L7 7
- #define R7 8
- #define C7 9
- #define LC 10
- #define RC 11
- /* Sums */
- #define T23 0
- #define T24 1
- #define T34 2
- #define T234 3
- #define T56 4
- /* 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
- /* 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 BINARY /* 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;
- typedef sb_alloc al_table[SBLIMIT][16];
- /* Header Information Structure */
- typedef struct {
- int version;
- int lay;
- int error_protection;
- int bitrate_index;
- int sampling_frequency;
- int padding;
- int extension;
- int mode;
- int mode_ext;
- int copyright;
- int original;
- int emphasis;
- int center; /* center present */
- int surround; /* surrounds present*/
- int audio_mix; /* large listening room or not? */
- int matrix; /* type of dematricing */
- int lfe; /* low frequency effect channel*/
- int multiling_ch; /* number of multilingual channels */
- int multiling_fs; /* fs of ML channels is half fs of main channels */
- int multiling_lay; /* Layer IIML or Layer II ML is used*/
- int ext_bit_stream_present; /* extension bitstream present? */
- int n_ad_bytes; /* if yes, how many bits anc.data for mpeg2 */
- int mc_pred[8]; /* prediction bit*/
- int tc_alloc[12]; /* transmission channel allocation in each sbgroup*/
- int predsi[8][6]; /* predictor select information*/
- int delay_comp[8][6];
- int pred_coef[8][6][3];
- int mc_prediction_on;
- int tc_sbgr_select;
- int tc_allocation;
- int dyn_cross_on;
- int dyn_cross_LR; /* center out of Lo or Ro*/
- int dyn_cross[12];
- int ext_length;
- int ext_sync;
- int ext_bit;
- int copy_ident_bit;
- int copy_ident_start;
- int dyn_second_stereo[12];
- #ifdef Augmentation_7ch
- int aug_mtx_proc;
- int aug_dyn_cross_on;
- int aug_future_ext;
- int aug_tc_alloc[12]; /* transmission channel allocation in each sbgroup */
- int aug_dyn_cross[12];
- #endif
- } layer, *the_layer;
- /* Parent Structure Interpreting some Frame Parameters in Header */
- typedef struct {
- layer *header; /* raw header information */
- int actual_mode; /* when writing IS, may forget if 0 chs */
- al_table *alloc; /* bit allocation table read in */
- al_table *alloc_mc; /* MC bit allocation table read in */
- al_table *alloc_ml; /* ML bit allocation table read in */
- int tab_num; /* number of table as loaded */
- int tab_num_mc; /* number of MC table as loaded */
- int tab_num_ml; /* number of ML table as loaded */
- int stereo; /* 1 for mono, 2 for stereo */
- int stereomc;
- int stereoaug;
- int lfe_pos;
- int jsbound; /* first band of joint stereo coding */
- double mnr_min; /* mnr for dynamic bitallocation */
- int sblimit; /* total number of sub bands */
- int sblimit_mc; /* total number of MC sub bands */
- int sblimit_ml; /* total number of ML sub bands */
- int phantom_c; /* phantom coding of Center signal */
- int config; /* config code: 320, 310, 300, 302, 220, 210, 200, 202, 100, 102 */
- } frame_params;
- /* Double and SANE Floating Point Type Definitions */
- typedef struct IEEE_DBL_struct {
- unsigned long hi;
- unsigned long lo;
- } IEEE_DBL;
- typedef struct SANE_EXT_struct {
- unsigned long l1;
- unsigned long l2;
- unsigned short s1;
- } SANE_EXT;
- /* AIFF Type Definitions */
- typedef char ID[4];
- typedef struct identifier_struct{
- ID name;
- long ck_length;
- }identifier;
- typedef struct ChunkHeader_struct {
- ID ckID;
- long ckSize;
- } ChunkHeader;
- typedef struct Chunk_struct {
- ID ckID;
- long ckSize;
- ID formType;
- } Chunk;
- typedef struct CommonChunk_struct {
- ID ckID;
- long ckSize;
- short numChannels;
- unsigned long numSampleFrames;
- short sampleSize;
- char sampleRate[10];
- } CommonChunk;
- typedef struct SoundDataChunk_struct {
- ID ckID;
- long ckSize;
- unsigned long offset;
- unsigned long blockSize;
- } SoundDataChunk;
- typedef struct blockAlign_struct {
- unsigned long offset;
- unsigned long blockSize;
- } blockAlign;
- typedef struct IFF_AIFF_struct {
- short numChannels;
- unsigned long numSampleFrames;
- short sampleSize;
- double sampleRate;
- ID/*char**/ sampleType;/*must be allocated 21.6.93 SR*/
- blockAlign blkAlgn;
- } IFF_AIFF;
- /* "bit_stream.h" Type Definitions */
- typedef struct bit_stream_struc {
- FILE *pt; /* pointer to bit stream device */
- unsigned char *buf; /* bit stream buffer */
- int buf_size; /* size of buffer (in number of bytes) */
- long totbit; /* bit counter of bit stream */
- int buf_byte_idx; /* pointer to top byte in buffer */
- int buf_bit_idx; /* pointer to top bit of top byte in buffer */
- int mode; /* bit stream open in read or write mode */
- int eob; /* end of buffer index */
- int eobs; /* end of bit stream flag */
- char format;
- /* format of file in rd mode (BINARY/ASCII) */
- } Bit_stream_struc;
- /* JMZ 08/03/1995 begin SORT*/
- typedef struct {
- int tc_channel;
- int audio_channel;
- int subband;
- int sbgroup;
- int used;
- double mnr;
- int next;
- } channel_sort;
- /* JMZ 08/03/1995 end SORT*/
- /***********************************************************************
- *
- * Global Variable External Declarations
- *
- ***********************************************************************/
- extern char *mode_names[4];
- extern char *layer_names[3];
- extern double s_freq[4];
- extern int bitrate[3][16];
- extern double multiple[64];
- extern int sbgrp[32];
- extern int sb_groups[12];
- extern int n_pred_coef[16];
- extern int no_channel[8][2];
- extern int T2[SBGRS], T3[SBGRS], T4[SBGRS];
- #ifdef Augmentation_7ch
- extern int T5[SBGRS], T6[SBGRS];
- #endif
- extern int T2outof[12], T3outof[12], T4outof[12]; /* L0 or R0 */
- extern int T2from[12], T3from[12], T4from[12];
- extern int verbosity;
- /***********************************************************************
- *
- * Global Function Prototype Declarations
- *
- ***********************************************************************/
- /* The following functions are in the file "common.c" */
- #ifdef MACINTOSH
- extern void set_mac_file_attr(char[MAX_NAME_SIZE], short, OsType,
- OsType);
- #endif
- extern void program_information(void);
- extern FILE *OpenTableFile(char *name);
- extern int read_bit_alloc(int table, al_table (*alloc));
- extern int pick_table(frame_params *fr_ps);
- extern int js_bound(int lay, int m_ext);
- extern void hdr_to_frps(frame_params *fr_ps);
- extern int BitrateIndex(int layr, int bRate);
- extern int SmpFrqIndex(long int sRate);
- extern void *mem_alloc(long unsigned int block, char *item);
- extern void mem_free(void **ptr_addr);
- extern void double_to_extended(double *pd, char *ps);
- extern void extended_to_double(char *ps, double *pd);
- extern int aiff_read_headers(FILE *file_ptr, IFF_AIFF *aiff_ptr, int *byte_per_sample);
- extern int aiff_seek_to_sound_data(FILE *file_ptr);
- extern int aiff_write_headers(FILE *file_ptr, IFF_AIFF *aiff_ptr);
- extern int refill_buffer(Bit_stream_struc *bs);
- extern void empty_buffer(Bit_stream_struc *bs, int minimum);
- extern void open_bit_stream_w(Bit_stream_struc *bs, char *bs_filenam, int size);
- extern void open_bit_stream_r(Bit_stream_struc *bs, char *bs_filenam, int size);
- extern void close_bit_stream_r(Bit_stream_struc *bs);
- extern void close_bit_stream_w(Bit_stream_struc *bs);
- extern void alloc_buffer(Bit_stream_struc *bs, int size);
- extern void desalloc_buffer(Bit_stream_struc *bs);
- extern unsigned int get1bit(Bit_stream_struc *bs);
- extern void put1bit(Bit_stream_struc *bs, int bit);
- extern unsigned long getbits(Bit_stream_struc *bs, int N);
- extern void putbits(Bit_stream_struc *bs, unsigned int val, int N);
- extern unsigned long sstell (Bit_stream_struc *bs);
- extern int end_bs (Bit_stream_struc *bs);
- extern int transmission_channel (frame_params *fr_ps, int sbgr, int m);
- extern int dyn_ch (frame_params *fr_ps, int sbgr, int m);
- extern int dyn_bbal (int config, int center, int dynx, int m);
- extern int dyn_bbal_2ndst (int dynx, int m);
- #ifdef Augmentation_7ch
- extern int dyn_bbal_aug (int aug_dynx, int m);
- #endif
- extern void init_mc_pred (frame_params *fr_ps);
- extern void set_mc_pred (frame_params *fr_ps);
- extern void I_CRC_calc (frame_params *fr_ps, unsigned int (*bit_alloc)[32], unsigned int *crc);
- extern void II_CRC_calc (frame_params *fr_ps, unsigned int (*bit_alloc)[32], unsigned int (*scfsi)[32], unsigned int *crc);
- extern void II_CRC_calc_mc (frame_params *fr_ps, unsigned int (*bit_alloc)[32], unsigned int lfe_alloc, unsigned int (*scfsi)[32], unsigned int *crc);
- #ifdef Augmentation_7ch
- extern void II_CRC_calc_aug (frame_params *fr_ps, unsigned int (*bit_alloc)[32], unsigned int (*scfsi)[32], unsigned int *crc);
- #endif
- extern void II_CRC_calc_ext (frame_params *fr_ps, unsigned int *x, unsigned int *crc);
- extern void update_CRC (unsigned int data, unsigned int length, unsigned int *crc);
