libavcodec/mpegaudiodectab.h File Reference

mpeg audio layer decoder tables. More...

#include <stddef.h>
#include <stdint.h>
#include "mpegaudio.h"

Go to the source code of this file.

Data Structures

struct  HuffTable

Variables

static const uint8_t slen_table [2][16]
static const uint8_t lsf_nsf_table [6][3][4]
static const uint16_t mpa_huffcodes_1 [4]
static const uint8_t mpa_huffbits_1 [4]
static const uint16_t mpa_huffcodes_2 [9]
static const uint8_t mpa_huffbits_2 [9]
static const uint16_t mpa_huffcodes_3 [9]
static const uint8_t mpa_huffbits_3 [9]
static const uint16_t mpa_huffcodes_5 [16]
static const uint8_t mpa_huffbits_5 [16]
static const uint16_t mpa_huffcodes_6 [16]
static const uint8_t mpa_huffbits_6 [16]
static const uint16_t mpa_huffcodes_7 [36]
static const uint8_t mpa_huffbits_7 [36]
static const uint16_t mpa_huffcodes_8 [36]
static const uint8_t mpa_huffbits_8 [36]
static const uint16_t mpa_huffcodes_9 [36]
static const uint8_t mpa_huffbits_9 [36]
static const uint16_t mpa_huffcodes_10 [64]
static const uint8_t mpa_huffbits_10 [64]
static const uint16_t mpa_huffcodes_11 [64]
static const uint8_t mpa_huffbits_11 [64]
static const uint16_t mpa_huffcodes_12 [64]
static const uint8_t mpa_huffbits_12 [64]
static const uint16_t mpa_huffcodes_13 [256]
static const uint8_t mpa_huffbits_13 [256]
static const uint16_t mpa_huffcodes_15 [256]
static const uint8_t mpa_huffbits_15 [256]
static const uint16_t mpa_huffcodes_16 [256]
static const uint8_t mpa_huffbits_16 [256]
static const uint16_t mpa_huffcodes_24 [256]
static const uint8_t mpa_huffbits_24 [256]
static const HuffTable mpa_huff_tables [16]
static const uint8_t mpa_huff_data [32][2]
static const uint8_t mpa_quad_codes [2][16]
static const uint8_t mpa_quad_bits [2][16]
static const uint8_t band_size_long [9][22]
static const uint8_t band_size_short [9][13]
static const uint8_t mpa_pretab [2][22]
static const float ci_table [8]

Detailed Description

mpeg audio layer decoder tables.

Definition in file mpegaudiodectab.h.

Variable Documentation

const uint8_t band_size_long[9][22] [static]

Initial value:

 {
{ 4, 4, 4, 4, 4, 4, 6, 6, 8, 8, 10,
  12, 16, 20, 24, 28, 34, 42, 50, 54, 76, 158, }, 
{ 4, 4, 4, 4, 4, 4, 6, 6, 6, 8, 10,
  12, 16, 18, 22, 28, 34, 40, 46, 54, 54, 192, }, 
{ 4, 4, 4, 4, 4, 4, 6, 6, 8, 10, 12,
  16, 20, 24, 30, 38, 46, 56, 68, 84, 102, 26, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  18, 22, 26, 32, 38, 46, 52, 64, 70, 76, 36, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16,
  20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, 
{ 12, 12, 12, 12, 12, 12, 16, 20, 24, 28, 32,
  40, 48, 56, 64, 76, 90, 2, 2, 2, 2, 2, }, 
}

Definition at line 572 of file mpegaudiodectab.h.

Referenced by compute_stereo(), decode_init(), and exponents_from_scale_factors().

const uint8_t band_size_short[9][13] [static]

Initial value:

 {
{ 4, 4, 4, 4, 6, 8, 10, 12, 14, 18, 22, 30, 56, }, 
{ 4, 4, 4, 4, 6, 6, 10, 12, 14, 16, 20, 26, 66, }, 
{ 4, 4, 4, 4, 6, 8, 12, 16, 20, 26, 34, 42, 12, }, 
{ 4, 4, 4, 6, 6, 8, 10, 14, 18, 26, 32, 42, 18, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 32, 44, 12, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, 
{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, 
{ 8, 8, 8, 12, 16, 20, 24, 28, 36, 2, 2, 2, 26, }, 
}

Definition at line 593 of file mpegaudiodectab.h.

Referenced by compute_stereo(), exponents_from_scale_factors(), and reorder_block().

const float ci_table[8] [static]

Initial value:

 {
    -0.6, -0.535, -0.33, -0.185, -0.095, -0.041, -0.0142, -0.0037,
}

Definition at line 611 of file mpegaudiodectab.h.

Referenced by decode_init().

const uint8_t lsf_nsf_table[6][3][4] [static]

Initial value:

 {
    { {  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 } },
}

Definition at line 52 of file mpegaudiodectab.h.

Referenced by mp_decode_layer3().

const uint8_t mpa_huff_data[32][2] [static]

Definition at line 524 of file mpegaudiodectab.h.

Referenced by huffman_decode().

const HuffTable mpa_huff_tables[16] [static]

Initial value:

 {
{ 1, NULL, NULL },
{ 2, mpa_huffbits_1, mpa_huffcodes_1 },
{ 3, mpa_huffbits_2, mpa_huffcodes_2 },
{ 3, mpa_huffbits_3, mpa_huffcodes_3 },
{ 4, mpa_huffbits_5, mpa_huffcodes_5 },
{ 4, mpa_huffbits_6, mpa_huffcodes_6 },
{ 6, mpa_huffbits_7, mpa_huffcodes_7 },
{ 6, mpa_huffbits_8, mpa_huffcodes_8 },
{ 6, mpa_huffbits_9, mpa_huffcodes_9 },
{ 8, mpa_huffbits_10, mpa_huffcodes_10 },
{ 8, mpa_huffbits_11, mpa_huffcodes_11 },
{ 8, mpa_huffbits_12, mpa_huffcodes_12 },
{ 16, mpa_huffbits_13, mpa_huffcodes_13 },
{ 16, mpa_huffbits_15, mpa_huffcodes_15 },
{ 16, mpa_huffbits_16, mpa_huffcodes_16 },
{ 16, mpa_huffbits_24, mpa_huffcodes_24 },
}

Definition at line 505 of file mpegaudiodectab.h.

Referenced by decode_init().

const uint8_t mpa_huffbits_1[4] [static]

Initial value:

 {
  1,  3,  2,  3,
}

Definition at line 67 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_10[64] [static]

Initial value:

 {
  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,
}

Definition at line 170 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_11[64] [static]

Initial value:

 {
  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,
}

Definition at line 192 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_12[64] [static]

Initial value:

 {
  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,
}

Definition at line 214 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_13[256] [static]

Definition at line 260 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_15[256] [static]

Definition at line 330 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_16[256] [static]

Definition at line 400 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_2[9] [static]

Initial value:

 {
  1,  3,  6,  3,  3,  5,  5,  5,
  6,
}

Definition at line 76 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_24[256] [static]

Definition at line 470 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_3[9] [static]

Initial value:

 {
  2,  2,  6,  3,  2,  5,  5,  5,
  6,
}

Definition at line 86 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_5[16] [static]

Initial value:

 {
  1,  3,  6,  7,  3,  3,  6,  7,
  6,  6,  7,  8,  7,  6,  7,  8,
}

Definition at line 96 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_6[16] [static]

Initial value:

 {
  3,  3,  5,  7,  3,  2,  4,  5,
  4,  4,  5,  6,  6,  5,  6,  7,
}

Definition at line 106 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_7[36] [static]

Initial value:

 {
  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,
}

Definition at line 119 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_8[36] [static]

Initial value:

 {
  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,
}

Definition at line 135 of file mpegaudiodectab.h.

const uint8_t mpa_huffbits_9[36] [static]

Initial value:

 {
  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,
}

Definition at line 151 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_1[4] [static]

Initial value:

 {
 0x0001, 0x0001, 0x0001, 0x0000,
}

Definition at line 63 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_10[64] [static]

Initial value:

 {
 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,
}

Definition at line 159 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_11[64] [static]

Initial value:

 {
 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,
}

Definition at line 181 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_12[64] [static]

Initial value:

 {
 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,
}

Definition at line 203 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_13[256] [static]

Definition at line 225 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_15[256] [static]

Definition at line 295 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_16[256] [static]

Definition at line 365 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_2[9] [static]

Initial value:

 {
 0x0001, 0x0002, 0x0001, 0x0003, 0x0001, 0x0001, 0x0003, 0x0002,
 0x0000,
}

Definition at line 71 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_24[256] [static]

Definition at line 435 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_3[9] [static]

Initial value:

 {
 0x0003, 0x0002, 0x0001, 0x0001, 0x0001, 0x0001, 0x0003, 0x0002,
 0x0000,
}

Definition at line 81 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_5[16] [static]

Initial value:

 {
 0x0001, 0x0002, 0x0006, 0x0005, 0x0003, 0x0001, 0x0004, 0x0004,
 0x0007, 0x0005, 0x0007, 0x0001, 0x0006, 0x0001, 0x0001, 0x0000,
}

Definition at line 91 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_6[16] [static]

Initial value:

 {
 0x0007, 0x0003, 0x0005, 0x0001, 0x0006, 0x0002, 0x0003, 0x0002,
 0x0005, 0x0004, 0x0004, 0x0001, 0x0003, 0x0003, 0x0002, 0x0000,
}

Definition at line 101 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_7[36] [static]

Initial value:

 {
 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,
}

Definition at line 111 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_8[36] [static]

Initial value:

 {
 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,
}

Definition at line 127 of file mpegaudiodectab.h.

const uint16_t mpa_huffcodes_9[36] [static]

Initial value:

 {
 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,
}

Definition at line 143 of file mpegaudiodectab.h.

const uint8_t mpa_pretab[2][22] [static]

Initial value:

 {
    { 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, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 2, 0 },
}

Definition at line 605 of file mpegaudiodectab.h.

Referenced by exponents_from_scale_factors().

const uint8_t mpa_quad_bits[2][16] [static]

Initial value:

 {
    { 1, 4, 4, 5, 4, 6, 5, 6, 4, 5, 5, 6, 5, 6, 6, 6, },
    { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, },
}

Definition at line 566 of file mpegaudiodectab.h.

Referenced by decode_init().

const uint8_t mpa_quad_codes[2][16] [static]

Initial value:

 {
    {  1,  5,  4,  5,  6,  5,  4,  4, 7,  3,  6,  0,  7,  2,  3,  1, },
    { 15, 14, 13, 12, 11, 10,  9,  8, 7,  6,  5,  4,  3,  2,  1,  0, },
}

Definition at line 561 of file mpegaudiodectab.h.

Referenced by decode_init().

const uint8_t slen_table[2][16] [static]

Initial value:

 {
    { 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 },
}

Definition at line 46 of file mpegaudiodectab.h.

Referenced by mp_decode_layer3().

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