mpegaudiodectab.h

tcpmp播放器的flv插件

/**
 * @file mpegaudiodectab.h
 * mpeg audio layer decoder tables. 
 */

const uint16_t mpa_bitrate_tab[2][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 } },
    { {0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256},
      {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160},
      {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}
    }
};

const uint16_t mpa_freq_tab[3] = { 44100, 48000, 32000 };

/*******************************************************/
/* half mpeg encoding window (full precision) */
const int32_t mpa_enwindow[257] = {
     0,    -1,    -1,    -1,    -1,    -1,    -1,    -2,
    -2,    -2,    -2,    -3,    -3,    -4,    -4,    -5,
    -5,    -6,    -7,    -7,    -8,    -9,   -10,   -11,
   -13,   -14,   -16,   -17,   -19,   -21,   -24,   -26,
   -29,   -31,   -35,   -38,   -41,   -45,   -49,   -53,
   -58,   -63,   -68,   -73,   -79,   -85,   -91,   -97,
  -104,  -111,  -117,  -125,  -132,  -139,  -147,  -154,
  -161,  -169,  -176,  -183,  -190,  -196,  -202,  -208,
   213,   218,   222,   225,   227,   228,   228,   227,
   224,   221,   215,   208,   200,   189,   177,   163,
   146,   127,   106,    83,    57,    29,    -2,   -36,
   -72,  -111,  -153,  -197,  -244,  -294,  -347,  -401,
  -459,  -519,  -581,  -645,  -711,  -779,  -848,  -919,
  -991, -1064, -1137, -1210, -1283, -1356, -1428, -1498,
 -1567, -1634, -1698, -1759, -1817, -1870, -1919, -1962,
 -2001, -2032, -2057, -2075, -2085, -2087, -2080, -2063,
  2037,  2000,  1952,  1893,  1822,  1739,  1644,  1535,
  1414,  1280,  1131,   970,   794,   605,   402,   185,
   -45,  -288,  -545,  -814, -1095, -1388, -1692, -2006,
 -2330, -2663, -3004, -3351, -3705, -4063, -4425, -4788,
 -5153, -5517, -5879, -6237, -6589, -6935, -7271, -7597,
 -7910, -8209, -8491, -8755, -8998, -9219, -9416, -9585,
 -9727, -9838, -9916, -9959, -9966, -9935, -9863, -9750,
 -9592, -9389, -9139, -8840, -8492, -8092, -7640, -7134,
  6574,  5959,  5288,  4561,  3776,  2935,  2037,  1082,
    70,  -998, -2122, -3300, -4533, -5818, -7154, -8540,
 -9975,-11455,-12980,-14548,-16155,-17799,-19478,-21189,
-22929,-24694,-26482,-28289,-30112,-31947,-33791,-35640,
-37489,-39336,-41176,-43006,-44821,-46617,-48390,-50137,
-51853,-53534,-55178,-56778,-58333,-59838,-61289,-62684,
-64019,-65290,-66494,-67629,-68692,-69679,-70590,-71420,
-72169,-72835,-73415,-73908,-74313,-74630,-74856,-74992,
 75038,
};

/*******************************************************/
/* layer 2 tables */

const int sblimit_table[5] = { 27 , 30 , 8, 12 , 30 };

const int quant_steps[17] = {
    3,     5,    7,    9,    15,
    31,    63,  127,  255,   511,
    1023,  2047, 4095, 8191, 16383,
    32767, 65535
};

/* we use a negative value if grouped */
const int quant_bits[17] = {
    -5,  -7,  3, -10, 4, 
     5,  6,  7,  8,  9,
    10, 11, 12, 13, 14,
    15, 16 
};

/* encoding tables which give the quantization index. Note how it is
   possible to store them efficiently ! */
static const unsigned char alloc_table_0[] = {
 4,  0,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 
 4,  0,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 
 4,  0,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
};

static const unsigned char alloc_table_1[] = {
 4,  0,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 
 4,  0,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 
 4,  0,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 3,  0,  1,  2,  3,  4,  5, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
 2,  0,  1, 16, 
};

static const unsigned char alloc_table_2[] = {
 4,  0,  1,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 
 4,  0,  1,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
};

static const unsigned char alloc_table_3[] = {
 4,  0,  1,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 
 4,  0,  1,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
};

static const unsigned char alloc_table_4[] = {
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 
 4,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 3,  0,  1,  3,  4,  5,  6,  7, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
 2,  0,  1,  3, 
};

const unsigned char *alloc_tables[5] = 
{ alloc_table_0, alloc_table_1, alloc_table_2, alloc_table_3, alloc_table_4, };

/*******************************************************/
/* layer 3 tables */

/* layer3 scale factor size */
static const uint8_t slen_table[2][16] = {
    { 0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 },
    { 0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3 },
};

/* number of lsf scale factors for a given size */
static const uint8_t lsf_nsf_table[6][3][4] = {
    { {  6,  5,  5, 5 }, {  9,  9,  9, 9 }, {  6,  9,  9, 9 } },
    { {  6,  5,  7, 3 }, {  9,  9, 12, 6 }, {  6,  9, 12, 6 } },
    { { 11, 10,  0, 0 }, { 18, 18,  0, 0 }, { 15, 18,  0, 0 } },
    { {  7,  7,  7, 0 }, { 12, 12, 12, 0 }, {  6, 15, 12, 0 } }, 
    { {  6,  6,  6, 3 }, { 12,  9,  9, 6 }, {  6, 12,  9, 6 } },
    { {  8,  8,  5, 0 }, { 15, 12,  9, 0 }, {  6, 18,  9, 0 } },
};

/* mpegaudio layer 3 huffman tables */

const uint16_t mpa_huffcodes_1[4] = {
 0x0001, 0x0001, 0x0001, 0x0000,
};

const uint8_t mpa_huffbits_1[4] = {
  1,  3,  2,  3,
};

const uint16_t mpa_huffcodes_2[9] = {
 0x0001, 0x0002, 0x0001, 0x0003, 0x0001, 0x0001, 0x0003, 0x0002,
 0x0000,
};

const uint8_t mpa_huffbits_2[9] = {
  1,  3,  6,  3,  3,  5,  5,  5,
  6,
};

const uint16_t mpa_huffcodes_3[9] = {
 0x0003, 0x0002, 0x0001, 0x0001, 0x0001, 0x0001, 0x0003, 0x0002,
 0x0000,
};

const uint8_t mpa_huffbits_3[9] = {
  2,  2,  6,  3,  2,  5,  5,  5,
  6,
};

const uint16_t mpa_huffcodes_5[16] = {
 0x0001, 0x0002, 0x0006, 0x0005, 0x0003, 0x0001, 0x0004, 0x0004,
 0x0007, 0x0005, 0x0007, 0x0001, 0x0006, 0x0001, 0x0001, 0x0000,
};

const uint8_t mpa_huffbits_5[16] = {
  1,  3,  6,  7,  3,  3,  6,  7,
  6,  6,  7,  8,  7,  6,  7,  8,
};

const uint16_t mpa_huffcodes_6[16] = {
 0x0007, 0x0003, 0x0005, 0x0001, 0x0006, 0x0002, 0x0003, 0x0002,
 0x0005, 0x0004, 0x0004, 0x0001, 0x0003, 0x0003, 0x0002, 0x0000,
};

const uint8_t mpa_huffbits_6[16] = {
  3,  3,  5,  7,  3,  2,  4,  5,
  4,  4,  5,  6,  6,  5,  6,  7,
};

const uint16_t mpa_huffcodes_7[36] = {
 0x0001, 0x0002, 0x000a, 0x0013, 0x0010, 0x000a, 0x0003, 0x0003,
 0x0007, 0x000a, 0x0005, 0x0003, 0x000b, 0x0004, 0x000d, 0x0011,
 0x0008, 0x0004, 0x000c, 0x000b, 0x0012, 0x000f, 0x000b, 0x0002,
 0x0007, 0x0006, 0x0009, 0x000e, 0x0003, 0x0001, 0x0006, 0x0004,
 0x0005, 0x0003, 0x0002, 0x0000,
};

const uint8_t mpa_huffbits_7[36] = {
  1,  3,  6,  8,  8,  9,  3,  4,
  6,  7,  7,  8,  6,  5,  7,  8,
  8,  9,  7,  7,  8,  9,  9,  9,
  7,  7,  8,  9,  9, 10,  8,  8,
  9, 10, 10, 10,
};

const uint16_t mpa_huffcodes_8[36] = {
 0x0003, 0x0004, 0x0006, 0x0012, 0x000c, 0x0005, 0x0005, 0x0001,
 0x0002, 0x0010, 0x0009, 0x0003, 0x0007, 0x0003, 0x0005, 0x000e,
 0x0007, 0x0003, 0x0013, 0x0011, 0x000f, 0x000d, 0x000a, 0x0004,
 0x000d, 0x0005, 0x0008, 0x000b, 0x0005, 0x0001, 0x000c, 0x0004,
 0x0004, 0x0001, 0x0001, 0x0000,
};

const uint8_t mpa_huffbits_8[36] = {
  2,  3,  6,  8,  8,  9,  3,  2,
  4,  8,  8,  8,  6,  4,  6,  8,
  8,  9,  8,  8,  8,  9,  9, 10,
  8,  7,  8,  9, 10, 10,  9,  8,
  9,  9, 11, 11,
};

const uint16_t mpa_huffcodes_9[36] = {
 0x0007, 0x0005, 0x0009, 0x000e, 0x000f, 0x0007, 0x0006, 0x0004,
 0x0005, 0x0005, 0x0006, 0x0007, 0x0007, 0x0006, 0x0008, 0x0008,
 0x0008, 0x0005, 0x000f, 0x0006, 0x0009, 0x000a, 0x0005, 0x0001,
 0x000b, 0x0007, 0x0009, 0x0006, 0x0004, 0x0001, 0x000e, 0x0004,
 0x0006, 0x0002, 0x0006, 0x0000,
};

const uint8_t mpa_huffbits_9[36] = {
  3,  3,  5,  6,  8,  9,  3,  3,
  4,  5,  6,  8,  4,  4,  5,  6,
  7,  8,  6,  5,  6,  7,  7,  8,
  7,  6,  7,  7,  8,  9,  8,  7,
  8,  8,  9,  9,
};

const uint16_t mpa_huffcodes_10[64] = {
 0x0001, 0x0002, 0x000a, 0x0017, 0x0023, 0x001e, 0x000c, 0x0011,
 0x0003, 0x0003, 0x0008, 0x000c, 0x0012, 0x0015, 0x000c, 0x0007,
 0x000b, 0x0009, 0x000f, 0x0015, 0x0020, 0x0028, 0x0013, 0x0006,
 0x000e, 0x000d, 0x0016, 0x0022, 0x002e, 0x0017, 0x0012, 0x0007,
 0x0014, 0x0013, 0x0021, 0x002f, 0x001b, 0x0016, 0x0009, 0x0003,
 0x001f, 0x0016, 0x0029, 0x001a, 0x0015, 0x0014, 0x0005, 0x0003,
 0x000e, 0x000d, 0x000a, 0x000b, 0x0010, 0x0006, 0x0005, 0x0001,
 0x0009, 0x0008, 0x0007, 0x0008, 0x0004, 0x0004, 0x0002, 0x0000,
};

const uint8_t mpa_huffbits_10[64] = {
  1,  3,  6,  8,  9,  9,  9, 10,
  3,  4,  6,  7,  8,  9,  8,  8,
  6,  6,  7,  8,  9, 10,  9,  9,
  7,  7,  8,  9, 10, 10,  9, 10,
  8,  8,  9, 10, 10, 10, 10, 10,
  9,  9, 10, 10, 11, 11, 10, 11,
  8,  8,  9, 10, 10, 10, 11, 11,
  9,  8,  9, 10, 10, 11, 11, 11,
};

const uint16_t mpa_huffcodes_11[64] = {
 0x0003, 0x0004, 0x000a, 0x0018, 0x0022, 0x0021, 0x0015, 0x000f,
 0x0005, 0x0003, 0x0004, 0x000a, 0x0020, 0x0011, 0x000b, 0x000a,
 0x000b, 0x0007, 0x000d, 0x0012, 0x001e, 0x001f, 0x0014, 0x0005,
 0x0019, 0x000b, 0x0013, 0x003b, 0x001b, 0x0012, 0x000c, 0x0005,
 0x0023, 0x0021, 0x001f, 0x003a, 0x001e, 0x0010, 0x0007, 0x0005,
 0x001c, 0x001a, 0x0020, 0x0013, 0x0011, 0x000f, 0x0008, 0x000e,
 0x000e, 0x000c, 0x0009, 0x000d, 0x000e, 0x0009, 0x0004, 0x0001,
 0x000b, 0x0004, 0x0006, 0x0006, 0x0006, 0x0003, 0x0002, 0x0000,
};

const uint8_t mpa_huffbits_11[64] = {
  2,  3,  5,  7,  8,  9,  8,  9,
  3,  3,  4,  6,  8,  8,  7,  8,
  5,  5,  6,  7,  8,  9,  8,  8,
  7,  6,  7,  9,  8, 10,  8,  9,
  8,  8,  8,  9,  9, 10,  9, 10,
  8,  8,  9, 10, 10, 11, 10, 11,
  8,  7,  7,  8,  9, 10, 10, 10,
  8,  7,  8,  9, 10, 10, 10, 10,
};

const uint16_t mpa_huffcodes_12[64] = {
 0x0009, 0x0006, 0x0010, 0x0021, 0x0029, 0x0027, 0x0026, 0x001a,
 0x0007, 0x0005, 0x0006, 0x0009, 0x0017, 0x0010, 0x001a, 0x000b,
 0x0011, 0x0007, 0x000b, 0x000e, 0x0015, 0x001e, 0x000a, 0x0007,
 0x0011, 0x000a, 0x000f, 0x000c, 0x0012, 0x001c, 0x000e, 0x0005,
 0x0020, 0x000d, 0x0016, 0x0013, 0x0012, 0x0010, 0x0009, 0x0005,
 0x0028, 0x0011, 0x001f, 0x001d, 0x0011, 0x000d, 0x0004, 0x0002,
 0x001b, 0x000c, 0x000b, 0x000f, 0x000a, 0x0007, 0x0004, 0x0001,
 0x001b, 0x000c, 0x0008, 0x000c, 0x0006, 0x0003, 0x0001, 0x0000,
};

const uint8_t mpa_huffbits_12[64] = {
  4,  3,  5,  7,  8,  9,  9,  9,
  3,  3,  4,  5,  7,  7,  8,  8,
  5,  4,  5,  6,  7,  8,  7,  8,
  6,  5,  6,  6,  7,  8,  8,  8,
  7,  6,  7,  7,  8,  8,  8,  9,
  8,  7,  8,  8,  8,  9,  8,  9,
  8,  7,  7,  8,  8,  9,  9, 10,
  9,  8,  8,  9,  9,  9,  9, 10,
};

const uint16_t mpa_huffcodes_13[256] = {
 0x0001, 0x0005, 0x000e, 0x0015, 0x0022, 0x0033, 0x002e, 0x0047,
 0x002a, 0x0034, 0x0044, 0x0034, 0x0043, 0x002c, 0x002b, 0x0013,