consts.h

传输流分析

//#ifdef MPEGMAIN
//#define EXTERN
//#else
//#define EXTERN extern
//#endif

#define EXTERN

char *mode_names[4] = { "stereo", "j-stereo", "dual-ch", "single-ch" };
char *layer_names[3] = { "I", "II", "III" };
double  s_freq[4] = {44.1, 48, 32, 0};
int     bitrate[3][15] = {
          {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448},
          {0,32,48,56,64,80,96,112,128,160,192,224,256,320,384},
          {0,32,40,48,56,64,80,96,112,128,160,192,224,256,320}
        };
double multiple[64] = {
2.00000000000000, 1.58740105196820, 1.25992104989487,
1.00000000000000, 0.79370052598410, 0.62996052494744, 0.50000000000000,
0.39685026299205, 0.31498026247372, 0.25000000000000, 0.19842513149602,
0.15749013123686, 0.12500000000000, 0.09921256574801, 0.07874506561843,
0.06250000000000, 0.04960628287401, 0.03937253280921, 0.03125000000000,
0.02480314143700, 0.01968626640461, 0.01562500000000, 0.01240157071850,
0.00984313320230, 0.00781250000000, 0.00620078535925, 0.00492156660115,
0.00390625000000, 0.00310039267963, 0.00246078330058, 0.00195312500000,
0.00155019633981, 0.00123039165029, 0.00097656250000, 0.00077509816991,
0.00061519582514, 0.00048828125000, 0.00038754908495, 0.00030759791257,
0.00024414062500, 0.00019377454248, 0.00015379895629, 0.00012207031250,
0.00009688727124, 0.00007689947814, 0.00006103515625, 0.00004844363562,
0.00003844973907, 0.00003051757813, 0.00002422181781, 0.00001922486954,
0.00001525878906, 0.00001211090890, 0.00000961243477, 0.00000762939453,
0.00000605545445, 0.00000480621738, 0.00000381469727, 0.00000302772723,
0.00000240310869, 0.00000190734863, 0.00000151386361, 0.00000120155435,
1E-20};

/* zig zag scan */
EXTERN unsigned char zig_zag_scan[64] =
    { 0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,
      12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,
      35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,
      58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63};

/* alternate scan */
EXTERN unsigned char alternate_scan[64] =
    { 0,8,16,24,1,9,2,10,17,25,32,40,48,56,57,49,
      41,33,26,18,3,11,4,12,19,27,34,42,50,58,35,43,
      51,59,20,28,5,13,6,14,21,29,36,44,52,60,37,45,
      53,61,22,30,7,15,23,31,38,46,54,62,39,47,55,63};

/* default intra quantization matrix */
EXTERN unsigned char default_intra_quantizer_matrix[64] =
    { 8, 16, 19, 22, 26, 27, 29, 34,
      16, 16, 22, 24, 27, 29, 34, 37,
      19, 22, 26, 27, 29, 34, 34, 38,
      22, 22, 26, 27, 29, 34, 37, 40,
      22, 26, 27, 29, 32, 35, 40, 48,
      26, 27, 29, 32, 35, 40, 48, 58,
      26, 27, 29, 34, 38, 46, 56, 69,
      27, 29, 35, 38, 46, 56, 69, 83};

/* default non-intra quantization matrix */
EXTERN unsigned char default_non_intra_quantizer_matrix[64] =
    { 16, 17, 18, 19, 20, 21, 22, 23,
      17, 18, 19, 20, 21, 22, 23, 24,
      18, 19, 20, 21, 22, 23, 24, 25,
      19, 20, 21, 22, 23, 24, 26, 27,
      20, 21, 22, 23, 25, 26, 27, 28,
      21, 22, 23, 24, 26, 27, 28, 30,
      22, 23, 24, 26, 27, 28, 30, 31,
      23, 24, 25, 27, 28, 30, 31, 33};

/* non-linear quantization coefficient table */
EXTERN unsigned char non_linear_mquant_table[32] =
    { 0, 1, 2, 3, 4, 5, 6, 7,
      8,10,12,14,16,18,20,22,
      24,28,32,36,40,44,48,52,
      56,64,72,80,88,96,104,112};

/* non-linear mquant table for mapping from scale to code
 * since reconstruction levels are not bijective with the index map,
 * it is up to the designer to determine most of the quantization levels
 */

EXTERN unsigned char map_non_linear_mquant[113] =
    { 0,1,2,3,4,5,6,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,
      16,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,22,22,
      22,22,23,23,23,23,24,24,24,24,24,24,24,25,25,25,25,25,25,25,26,26,
      26,26,26,26,26,26,27,27,27,27,27,27,27,27,28,28,28,28,28,28,28,29,
      29,29,29,29,29,29,29,29,29,30,30,30,30,30,30,30,31,31,31,31,31};

/* data from ISO/IEC 13818-2 DIS, Annex B, variable length code tables */

/* Table B-1, variable length codes for macroblock_address_increment
 *
 * indexed by [macroblock_address_increment-1]
 * 'macroblock_escape' is treated elsewhere
 */

EXTERN VLCtable addrinctab[33]=
{
  {0x01,1},  {0x03,3},  {0x02,3},  {0x03,4},
  {0x02,4},  {0x03,5},  {0x02,5},  {0x07,7},
  {0x06,7},  {0x0b,8},  {0x0a,8},  {0x09,8},
  {0x08,8},  {0x07,8},  {0x06,8},  {0x17,10},
  {0x16,10}, {0x15,10}, {0x14,10}, {0x13,10},
  {0x12,10}, {0x23,11}, {0x22,11}, {0x21,11},
  {0x20,11}, {0x1f,11}, {0x1e,11}, {0x1d,11},
  {0x1c,11}, {0x1b,11}, {0x1a,11}, {0x19,11},
  {0x18,11}
};


/* Table B-2, B-3, B-4 variable length codes for macroblock_type
 *
 * indexed by [macroblock_type]
 */

EXTERN VLCtable mbtypetab[3][32]=
{
 /* I */
 {
  {0,0}, {1,1}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
  {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
  {0,0}, {1,2}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
  {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}
 },
 /* P */
 {
  {0,0}, {3,5}, {1,2}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
  {1,3}, {0,0}, {1,1}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
  {0,0}, {1,6}, {1,5}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
  {0,0}, {0,0}, {2,5}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}
 },
 /* B */
 {
  {0,0}, {3,5}, {0,0}, {0,0}, {2,3}, {0,0}, {3,3}, {0,0},
  {2,4}, {0,0}, {3,4}, {0,0}, {2,2}, {0,0}, {3,2}, {0,0},
  {0,0}, {1,6}, {0,0}, {0,0}, {0,0}, {0,0}, {2,6}, {0,0},
  {0,0}, {0,0}, {3,6}, {0,0}, {0,0}, {0,0}, {2,5}, {0,0}
 }
};


/* Table B-5 ... B-8 variable length codes for macroblock_type in
 *  scalable sequences
 *
 * not implemented
 */

/* Table B-9, variable length codes for coded_block_pattern
 *
 * indexed by [coded_block_pattern]
 */

EXTERN VLCtable cbptable[64]=
{
  {0x01,9}, {0x0b,5}, {0x09,5}, {0x0d,6},
  {0x0d,4}, {0x17,7}, {0x13,7}, {0x1f,8}, 
  {0x0c,4}, {0x16,7}, {0x12,7}, {0x1e,8}, 
  {0x13,5}, {0x1b,8}, {0x17,8}, {0x13,8},
  {0x0b,4}, {0x15,7}, {0x11,7}, {0x1d,8}, 
  {0x11,5}, {0x19,8}, {0x15,8}, {0x11,8}, 
  {0x0f,6}, {0x0f,8}, {0x0d,8}, {0x03,9},
  {0x0f,5}, {0x0b,8}, {0x07,8}, {0x07,9}, 
  {0x0a,4}, {0x14,7}, {0x10,7}, {0x1c,8}, 
  {0x0e,6}, {0x0e,8}, {0x0c,8}, {0x02,9}, 
  {0x10,5}, {0x18,8}, {0x14,8}, {0x10,8},
  {0x0e,5}, {0x0a,8}, {0x06,8}, {0x06,9}, 
  {0x12,5}, {0x1a,8}, {0x16,8}, {0x12,8}, 
  {0x0d,5}, {0x09,8}, {0x05,8}, {0x05,9}, 
  {0x0c,5}, {0x08,8}, {0x04,8}, {0x04,9},
  {0x07,3}, {0x0a,5}, {0x08,5}, {0x0c,6}
};


/* Table B-10, variable length codes for motion_code
 *
 * indexed by [abs(motion_code)]
 * sign of motion_code is treated elsewhere
 */

EXTERN VLCtable motionvectab[17]=
{
  {0x01,1},  {0x01,2},  {0x01,3},  {0x01,4},
  {0x03,6},  {0x05,7},  {0x04,7},  {0x03,7},
  {0x0b,9},  {0x0a,9},  {0x09,9},  {0x11,10},
  {0x10,10}, {0x0f,10}, {0x0e,10}, {0x0d,10},
  {0x0c,10}
};


/* Table B-11, variable length codes for dmvector
 *
 * treated elsewhere
 */

/* Table B-12, variable length codes for dct_dc_size_luminance
 *
 * indexed by [dct_dc_size_luminance]
 */

EXTERN sVLCtable DClumtab[12]=
{
  {0x0004,3}, {0x0000,2}, {0x0001,2}, {0x0005,3}, {0x0006,3}, {0x000e,4},
  {0x001e,5}, {0x003e,6}, {0x007e,7}, {0x00fe,8}, {0x01fe,9}, {0x01ff,9}
};