nihav-mpeg/src/codecs/mpegaudio/mp3data.rs

   1 use nihav_core::io::codebook::*;
   2
   3 pub const MP3_BANDS: usize = 21;
   4 pub const MP3_BANDS_SHORT: usize = 12;
   5
   6 pub const MP3_PREEMP_SCALES: [i8; MP3_BANDS + 1] = [
   7     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 2, 0
   8 ];
   9
  10 pub const MP3_ISTEREO_COEFFS: [f32; 7] = [
  11     1.0, 0.78867513459481288226, 0.63397459621556135323, 0.5,
  12     0.36602540378443864677, 0.21132486540518711774, 0.0
  13 ];
  14
  15 pub const SCFSI_FROM_BAND: [usize; MP3_BANDS] = [
  16     0, 0, 0, 0, 0, 0,
  17     1, 1, 1, 1, 1,
  18     2, 2, 2, 2, 2,
  19     3, 3, 3, 3, 3
  20 ];
  21
  22 pub const MP3_SCALEFAC_BITS1: [u8; 16] = [ 0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 ];
  23 pub const MP3_SCALEFAC_BITS2: [u8; 16] = [ 0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3 ];
  24
  25 pub const MP3_SFB_LONG_OFFS: [[usize; MP3_BANDS + 2]; 9] = [
  26   [ // 44.1
  27     0,  4,  8, 12, 16, 20, 24, 30,  36,  44,  52,  62,  74,  90, 110, 134, 162, 196, 238, 288, 342, 418, 576
  28   ], [ // 48
  29     0,  4,  8, 12, 16, 20, 24, 30,  36,  42,  50,  60,  72,  88, 106, 128, 156, 190, 230, 276, 330, 384, 576
  30   ], [ // 32
  31     0,  4,  8, 12, 16, 20, 24, 30,  36,  44,  54,  66,  82, 102, 126, 156, 194, 240, 296, 364, 448, 550, 576
  32   ], [ // 22.05
  33     0,  6, 12, 18, 24, 30, 36, 44,  54,  66,  80,  96, 116, 140, 168, 200, 238, 284, 336, 396, 464, 522, 576
  34   ], [ // 24
  35     0,  6, 12, 18, 24, 30, 36, 44,  54,  66,  80,  96, 114, 136, 162, 194, 232, 278, 332, 394, 464, 540, 576
  36   ], [ // 16
  37     0,  6, 12, 18, 24, 30, 36, 44,  54,  66,  80,  96, 116, 140, 168, 200, 238, 284, 336, 396, 464, 522, 576
  38   ], [ // 11.025
  39     0,  6, 12, 18, 24, 30, 36, 44,  54,  66,  80,  96, 116, 140, 168, 200, 238, 284, 336, 396, 464, 522, 576
  40   ], [ // 12
  41     0,  6, 12, 18, 24, 30, 36, 44,  54,  66,  80,  96, 116, 140, 168, 200, 238, 284, 336, 396, 464, 522, 576
  42   ], [ // 8
  43     0, 12, 24, 36, 48, 60, 72, 88, 108, 132, 160, 192, 232, 280, 336, 400, 476, 566, 568, 570, 572, 574, 576
  44   ]
  45 ];
  46
  47 pub const MP3_SFB_SHORT_OFFS: [[usize; MP3_BANDS_SHORT + 2]; 9] = [
  48     [ 0, 4,  8, 12, 16, 22, 30, 40,  52,  66,  84, 106, 136, 192 ], // 44.1
  49     [ 0, 4,  8, 12, 16, 22, 28, 38,  50,  64,  80, 100, 126, 192 ], // 48
  50     [ 0, 4,  8, 12, 16, 22, 30, 42,  58,  78, 104, 138, 180, 192 ], // 32
  51     [ 0, 4,  8, 12, 18, 24, 32, 42,  56,  74, 100, 132, 174, 192 ], // 22.05
  52     [ 0, 4,  8, 12, 18, 26, 36, 48,  62,  80, 104, 136, 180, 192 ], // 24
  53     [ 0, 4,  8, 12, 18, 26, 36, 48,  62,  80, 104, 134, 174, 192 ], // 16
  54     [ 0, 4,  8, 12, 18, 26, 36, 48,  62,  80, 104, 134, 174, 192 ], // 11.025
  55     [ 0, 4,  8, 12, 18, 26, 36, 48,  62,  80, 104, 134, 174, 192 ], // 12
  56     [ 0, 8, 16, 24, 36, 52, 72, 96, 124, 160, 162, 164, 166, 192 ], // 8
  57 ];
  58 pub const MP3_SFB_SHORT_SIZE: [[usize; MP3_BANDS_SHORT + 1]; 9] = [
  59     [ 4, 4, 4,  4,  6,  8, 10, 12, 14, 18, 22, 30, 56 ], // 44.1
  60     [ 4, 4, 4,  4,  6,  6, 10, 12, 14, 16, 20, 26, 66 ], // 48
  61     [ 4, 4, 4,  4,  6,  8, 12, 16, 20, 26, 34, 42, 12 ], // 32
  62     [ 4, 4, 4,  6,  6,  8, 10, 14, 18, 26, 32, 42, 18 ], // 22.05
  63     [ 4, 4, 4,  6,  8, 10, 12, 14, 18, 24, 32, 44, 12 ], // 24
  64     [ 4, 4, 4,  6,  8, 10, 12, 14, 18, 24, 30, 40, 18 ], // 16
  65     [ 4, 4, 4,  6,  8, 10, 12, 14, 18, 24, 30, 40, 18 ], // 11.025
  66     [ 4, 4, 4,  6,  8, 10, 12, 14, 18, 24, 30, 40, 18 ], // 12
  67     [ 8, 8, 8, 12, 16, 20, 24, 28, 36,  2,  2,  2, 26 ], // 8
  68 ];
  69
  70 pub const MP3_SCF_BITS3: [u8; 12 * 2] = [
  71     0, 0, 0, 1, 0, 2,
  72     1, 0, 1, 1, 1, 2,
  73     2, 0, 2, 1, 2, 2,
  74     3, 0, 3, 1, 3, 2
  75 ];
  76 pub const MP3_SCF_BITS5: [u8; 25 * 2] = [
  77     0, 0, 0, 1, 0, 2, 0, 3, 0, 4,
  78     1, 0, 1, 1, 1, 2, 1, 3, 1, 4,
  79     2, 0, 2, 1, 2, 2, 2, 3, 2, 4,
  80     3, 0, 3, 1, 3, 2, 3, 3, 3, 4,
  81     4, 0, 4, 1, 4, 2, 4, 3, 4, 4
  82 ];
  83 pub const MP3_SCF_BITS6: [u8; 180 * 3] = [
  84     0, 0, 0, 0, 0, 1, 0, 0, 2, 0, 0, 3, 0, 0, 4, 0, 0, 5,
  85     0, 1, 0, 0, 1, 1, 0, 1, 2, 0, 1, 3, 0, 1, 4, 0, 1, 5,
  86     0, 2, 0, 0, 2, 1, 0, 2, 2, 0, 2, 3, 0, 2, 4, 0, 2, 5,
  87     0, 3, 0, 0, 3, 1, 0, 3, 2, 0, 3, 3, 0, 3, 4, 0, 3, 5,
  88     0, 4, 0, 0, 4, 1, 0, 4, 2, 0, 4, 3, 0, 4, 4, 0, 4, 5,
  89     0, 5, 0, 0, 5, 1, 0, 5, 2, 0, 5, 3, 0, 5, 4, 0, 5, 5,
  90     1, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 0, 4, 1, 0, 5,
  91     1, 1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 3, 1, 1, 4, 1, 1, 5,
  92     1, 2, 0, 1, 2, 1, 1, 2, 2, 1, 2, 3, 1, 2, 4, 1, 2, 5,
  93     1, 3, 0, 1, 3, 1, 1, 3, 2, 1, 3, 3, 1, 3, 4, 1, 3, 5,
  94     1, 4, 0, 1, 4, 1, 1, 4, 2, 1, 4, 3, 1, 4, 4, 1, 4, 5,
  95     1, 5, 0, 1, 5, 1, 1, 5, 2, 1, 5, 3, 1, 5, 4, 1, 5, 5,
  96     2, 0, 0, 2, 0, 1, 2, 0, 2, 2, 0, 3, 2, 0, 4, 2, 0, 5,
  97     2, 1, 0, 2, 1, 1, 2, 1, 2, 2, 1, 3, 2, 1, 4, 2, 1, 5,
  98     2, 2, 0, 2, 2, 1, 2, 2, 2, 2, 2, 3, 2, 2, 4, 2, 2, 5,
  99     2, 3, 0, 2, 3, 1, 2, 3, 2, 2, 3, 3, 2, 3, 4, 2, 3, 5,
 100     2, 4, 0, 2, 4, 1, 2, 4, 2, 2, 4, 3, 2, 4, 4, 2, 4, 5,
 101     2, 5, 0, 2, 5, 1, 2, 5, 2, 2, 5, 3, 2, 5, 4, 2, 5, 5,
 102     3, 0, 0, 3, 0, 1, 3, 0, 2, 3, 0, 3, 3, 0, 4, 3, 0, 5,
 103     3, 1, 0, 3, 1, 1, 3, 1, 2, 3, 1, 3, 3, 1, 4, 3, 1, 5,
 104     3, 2, 0, 3, 2, 1, 3, 2, 2, 3, 2, 3, 3, 2, 4, 3, 2, 5,
 105     3, 3, 0, 3, 3, 1, 3, 3, 2, 3, 3, 3, 3, 3, 4, 3, 3, 5,
 106     3, 4, 0, 3, 4, 1, 3, 4, 2, 3, 4, 3, 3, 4, 4, 3, 4, 5,
 107     3, 5, 0, 3, 5, 1, 3, 5, 2, 3, 5, 3, 3, 5, 4, 3, 5, 5,
 108     4, 0, 0, 4, 0, 1, 4, 0, 2, 4, 0, 3, 4, 0, 4, 4, 0, 5,
 109     4, 1, 0, 4, 1, 1, 4, 1, 2, 4, 1, 3, 4, 1, 4, 4, 1, 5,
 110     4, 2, 0, 4, 2, 1, 4, 2, 2, 4, 2, 3, 4, 2, 4, 4, 2, 5,
 111     4, 3, 0, 4, 3, 1, 4, 3, 2, 4, 3, 3, 4, 3, 4, 4, 3, 5,
 112     4, 4, 0, 4, 4, 1, 4, 4, 2, 4, 4, 3, 4, 4, 4, 4, 4, 5,
 113     4, 5, 0, 4, 5, 1, 4, 5, 2, 4, 5, 3, 4, 5, 4, 4, 5, 5
 114 ];
 115
 116 pub const MP3_SCF_ENDS: [[[usize; 4]; 3]; 6] = [
 117     [ [  6, 11, 16, 21 ], [  9, 18, 27, 36 ], [  6, 15, 27, 33 ] ],
 118     [ [  6, 11, 18, 21 ], [  9, 18, 30, 36 ], [  6, 15, 27, 33 ] ],
 119     [ [ 11, 21, 21, 21 ], [ 18, 36, 36, 36 ], [ 15, 33, 33, 33 ] ],
 120     [ [  7, 14, 21, 21 ], [ 12, 24, 36, 36 ], [  6, 21, 33, 33 ] ],
 121     [ [  6, 12, 18, 21 ], [ 12, 21, 30, 36 ], [  6, 18, 27, 33 ] ],
 122     [ [  8, 16, 21, 21 ], [ 15, 27, 36, 36 ], [  6, 24, 33, 33 ] ]
 123 ];
 124
 125 const MP3_HUFF_QUAD_A_BITS: [u8; 16] = [ 1, 5, 4, 5, 6, 5, 4, 4, 7, 3, 6, 0, 7, 2, 3, 1 ];
 126 const MP3_HUFF_QUAD_A_LENS: [u8; 16] = [ 1, 4, 4, 5, 4, 6, 5, 6, 4, 5, 5, 6, 5, 6, 6, 6 ];
 127
 128 const MP3_HUFF1_BITS: [u8; 4] = [ 1, 1, 1, 0 ];
 129 const MP3_HUFF1_LENS: [u8; 4] = [ 1, 3, 2, 3 ];
 130 const MP3_HUFF2_BITS: [u8; 9] = [ 1, 2, 1, 3, 1, 1, 3, 2, 0 ];
 131 const MP3_HUFF2_LENS: [u8; 9] = [ 1, 3, 6, 3, 3, 5, 5, 5, 6 ];
 132 const MP3_HUFF3_BITS: [u8; 9] = [ 3, 2, 1, 1, 1, 1, 3, 2, 0 ];
 133 const MP3_HUFF3_LENS: [u8; 9] = [ 2, 2, 6, 3, 2, 5, 5, 5, 6 ];
 134 const MP3_HUFF5_BITS: [u8; 16] = [ 1, 2, 6, 5, 3, 1, 4, 4, 7, 5, 7, 1, 6, 1, 1, 0 ];
 135 const MP3_HUFF5_LENS: [u8; 16] = [ 1, 3, 6, 7, 3, 3, 6, 7, 6, 6, 7, 8, 7, 6, 7, 8 ];
 136 const MP3_HUFF6_BITS: [u8; 16] = [ 7, 3, 5, 1, 6, 2, 3, 2, 5, 4, 4, 1, 3, 3, 2, 0 ];
 137 const MP3_HUFF6_LENS: [u8; 16] = [ 3, 3, 5, 7, 3, 2, 4, 5, 4, 4, 5, 6, 6, 5, 6, 7 ];
 138 const MP3_HUFF7_BITS: [u8; 36] = [
 139     0x01, 0x02, 0x0A, 0x13, 0x10, 0x0A, 0x03, 0x03,
 140     0x07, 0x0A, 0x05, 0x03, 0x0B, 0x04, 0x0D, 0x11,
 141     0x08, 0x04, 0x0C, 0x0B, 0x12, 0x0F, 0x0B, 0x02,
 142     0x07, 0x06, 0x09, 0x0E, 0x03, 0x01, 0x06, 0x04,
 143     0x05, 0x03, 0x02, 0x00
 144 ];
 145 const MP3_HUFF7_LENS: [u8; 36] = [
 146     1,  3,  6,  8,  8,  9,  3,  4,  6,  7,  7,  8,  6,  5,  7,  8,
 147     8,  9,  7,  7,  8,  9,  9,  9,  7,  7,  8,  9,  9, 10,  8,  8,
 148     9, 10, 10, 10
 149 ];
 150 const MP3_HUFF8_BITS: [u8; 36] = [
 151     0x03, 0x04, 0x06, 0x12, 0x0C, 0x05, 0x05, 0x01,
 152     0x02, 0x10, 0x09, 0x03, 0x07, 0x03, 0x05, 0x0E,
 153     0x07, 0x03, 0x13, 0x11, 0x0F, 0x0D, 0x0A, 0x04,
 154     0x0D, 0x05, 0x08, 0x0B, 0x05, 0x01, 0x0C, 0x04,
 155     0x04, 0x01, 0x01, 0x00
 156 ];
 157 const MP3_HUFF8_LENS: [u8; 36] = [
 158     2,  3,  6,  8,  8,  9,  3,  2,  4,  8,  8,  8,  6,  4,  6,  8,
 159     8,  9,  8,  8,  8,  9,  9, 10,  8,  7,  8,  9, 10, 10,  9,  8,
 160     9,  9, 11, 11
 161 ];
 162 const MP3_HUFF9_BITS: [u8; 36] = [
 163     0x07, 0x05, 0x09, 0x0E, 0x0F, 0x07, 0x06, 0x04,
 164     0x05, 0x05, 0x06, 0x07, 0x07, 0x06, 0x08, 0x08,
 165     0x08, 0x05, 0x0F, 0x06, 0x09, 0x0A, 0x05, 0x01,
 166     0x0B, 0x07, 0x09, 0x06, 0x04, 0x01, 0x0E, 0x04,
 167     0x06, 0x02, 0x06, 0x00
 168 ];
 169 const MP3_HUFF9_LENS: [u8; 36] = [
 170     3,  3,  5,  6,  8,  9,  3,  3,  4,  5,  6,  8,  4,  4,  5,  6,
 171     7,  8,  6,  5,  6,  7,  7,  8,  7,  6,  7,  7,  8,  9,  8,  7,
 172     8,  8,  9,  9
 173 ];
 174 const MP3_HUFF10_BITS: [u8; 64] = [
 175     0x01, 0x02, 0x0A, 0x17, 0x23, 0x1E, 0x0C, 0x11,
 176     0x03, 0x03, 0x08, 0x0C, 0x12, 0x15, 0x0C, 0x07,
 177     0x0B, 0x09, 0x0F, 0x15, 0x20, 0x28, 0x13, 0x06,
 178     0x0E, 0x0D, 0x16, 0x22, 0x2E, 0x17, 0x12, 0x07,
 179     0x14, 0x13, 0x21, 0x2F, 0x1B, 0x16, 0x09, 0x03,
 180     0x1F, 0x16, 0x29, 0x1A, 0x15, 0x14, 0x05, 0x03,
 181     0x0E, 0x0D, 0x0A, 0x0B, 0x10, 0x06, 0x05, 0x01,
 182     0x09, 0x08, 0x07, 0x08, 0x04, 0x04, 0x02, 0x00
 183 ];
 184 const MP3_HUFF10_LENS: [u8; 64] = [
 185     1,  3,  6,  8,  9,  9,  9, 10,  3,  4,  6,  7,  8,  9,  8,  8,
 186     6,  6,  7,  8,  9, 10,  9,  9,  7,  7,  8,  9, 10, 10,  9, 10,
 187     8,  8,  9, 10, 10, 10, 10, 10,  9,  9, 10, 10, 11, 11, 10, 11,
 188     8,  8,  9, 10, 10, 10, 11, 11,  9,  8,  9, 10, 10, 11, 11, 11
 189 ];
 190 const MP3_HUFF11_BITS: [u8; 64] = [
 191     0x03, 0x04, 0x0A, 0x18, 0x22, 0x21, 0x15, 0x0F,
 192     0x05, 0x03, 0x04, 0x0A, 0x20, 0x11, 0x0B, 0x0A,
 193     0x0B, 0x07, 0x0D, 0x12, 0x1E, 0x1F, 0x14, 0x05,
 194     0x19, 0x0B, 0x13, 0x3B, 0x1B, 0x12, 0x0C, 0x05,
 195     0x23, 0x21, 0x1F, 0x3A, 0x1E, 0x10, 0x07, 0x05,
 196     0x1C, 0x1A, 0x20, 0x13, 0x11, 0x0F, 0x08, 0x0E,
 197     0x0E, 0x0C, 0x09, 0x0D, 0x0E, 0x09, 0x04, 0x01,
 198     0x0B, 0x04, 0x06, 0x06, 0x06, 0x03, 0x02, 0x00
 199 ];
 200 const MP3_HUFF11_LENS: [u8; 64] = [
 201     2,  3,  5,  7,  8,  9,  8,  9,  3,  3,  4,  6,  8,  8,  7,  8,
 202     5,  5,  6,  7,  8,  9,  8,  8,  7,  6,  7,  9,  8, 10,  8,  9,
 203     8,  8,  8,  9,  9, 10,  9, 10,  8,  8,  9, 10, 10, 11, 10, 11,
 204     8,  7,  7,  8,  9, 10, 10, 10,  8,  7,  8,  9, 10, 10, 10, 10
 205 ];
 206 const MP3_HUFF12_BITS: [u8; 64] = [
 207     0x09, 0x06, 0x10, 0x21, 0x29, 0x27, 0x26, 0x1A,
 208     0x07, 0x05, 0x06, 0x09, 0x17, 0x10, 0x1A, 0x0B,
 209     0x11, 0x07, 0x0B, 0x0E, 0x15, 0x1E, 0x0A, 0x07,
 210     0x11, 0x0A, 0x0F, 0x0C, 0x12, 0x1C, 0x0E, 0x05,
 211     0x20, 0x0D, 0x16, 0x13, 0x12, 0x10, 0x09, 0x05,
 212     0x28, 0x11, 0x1F, 0x1D, 0x11, 0x0D, 0x04, 0x02,
 213     0x1B, 0x0C, 0x0B, 0x0F, 0x0A, 0x07, 0x04, 0x01,
 214     0x1B, 0x0C, 0x08, 0x0C, 0x06, 0x03, 0x01, 0x00
 215 ];
 216 const MP3_HUFF12_LENS: [u8; 64] = [
 217     4,  3,  5,  7,  8,  9,  9,  9,  3,  3,  4,  5,  7,  7,  8,  8,
 218     5,  4,  5,  6,  7,  8,  7,  8,  6,  5,  6,  6,  7,  8,  8,  8,
 219     7,  6,  7,  7,  8,  8,  8,  9,  8,  7,  8,  8,  8,  9,  8,  9,
 220     8,  7,  7,  8,  8,  9,  9, 10,  9,  8,  8,  9,  9,  9,  9, 10
 221 ];
 222 const MP3_HUFF13_BITS: [u8; 256] = [
 223     0x01, 0x05, 0x0E, 0x15, 0x22, 0x33, 0x2E, 0x47,
 224     0x2A, 0x34, 0x44, 0x34, 0x43, 0x2C, 0x2B, 0x13,
 225     0x03, 0x04, 0x0C, 0x13, 0x1F, 0x1A, 0x2C, 0x21,
 226     0x1F, 0x18, 0x20, 0x18, 0x1F, 0x23, 0x16, 0x0E,
 227     0x0F, 0x0D, 0x17, 0x24, 0x3B, 0x31, 0x4D, 0x41,
 228     0x1D, 0x28, 0x1E, 0x28, 0x1B, 0x21, 0x2A, 0x10,
 229     0x16, 0x14, 0x25, 0x3D, 0x38, 0x4F, 0x49, 0x40,
 230     0x2B, 0x4C, 0x38, 0x25, 0x1A, 0x1F, 0x19, 0x0E,
 231     0x23, 0x10, 0x3C, 0x39, 0x61, 0x4B, 0x72, 0x5B,
 232     0x36, 0x49, 0x37, 0x29, 0x30, 0x35, 0x17, 0x18,
 233     0x3A, 0x1B, 0x32, 0x60, 0x4C, 0x46, 0x5D, 0x54,
 234     0x4D, 0x3A, 0x4F, 0x1D, 0x4A, 0x31, 0x29, 0x11,
 235     0x2F, 0x2D, 0x4E, 0x4A, 0x73, 0x5E, 0x5A, 0x4F,
 236     0x45, 0x53, 0x47, 0x32, 0x3B, 0x26, 0x24, 0x0F,
 237     0x48, 0x22, 0x38, 0x5F, 0x5C, 0x55, 0x5B, 0x5A,
 238     0x56, 0x49, 0x4D, 0x41, 0x33, 0x2C, 0x2B, 0x2A,
 239     0x2B, 0x14, 0x1E, 0x2C, 0x37, 0x4E, 0x48, 0x57,
 240     0x4E, 0x3D, 0x2E, 0x36, 0x25, 0x1E, 0x14, 0x10,
 241     0x35, 0x19, 0x29, 0x25, 0x2C, 0x3B, 0x36, 0x51,
 242     0x42, 0x4C, 0x39, 0x36, 0x25, 0x12, 0x27, 0x0B,
 243     0x23, 0x21, 0x1F, 0x39, 0x2A, 0x52, 0x48, 0x50,
 244     0x2F, 0x3A, 0x37, 0x15, 0x16, 0x1A, 0x26, 0x16,
 245     0x35, 0x19, 0x17, 0x26, 0x46, 0x3C, 0x33, 0x24,
 246     0x37, 0x1A, 0x22, 0x17, 0x1B, 0x0E, 0x09, 0x07,
 247     0x22, 0x20, 0x1C, 0x27, 0x31, 0x4B, 0x1E, 0x34,
 248     0x30, 0x28, 0x34, 0x1C, 0x12, 0x11, 0x09, 0x05,
 249     0x2D, 0x15, 0x22, 0x40, 0x38, 0x32, 0x31, 0x2D,
 250     0x1F, 0x13, 0x0C, 0x0F, 0x0A, 0x07, 0x06, 0x03,
 251     0x30, 0x17, 0x14, 0x27, 0x24, 0x23, 0x35, 0x15,
 252     0x10, 0x17, 0x0D, 0x0A, 0x06, 0x01, 0x04, 0x02,
 253     0x10, 0x0F, 0x11, 0x1B, 0x19, 0x14, 0x1D, 0x0B,
 254     0x11, 0x0C, 0x10, 0x08, 0x01, 0x01, 0x00, 0x01
 255 ];
 256 const MP3_HUFF13_LENS: [u8; 256] = [
 257      1,  4,  6,  7,  8,  9,  9, 10,  9, 10, 11, 11, 12, 12, 13, 13,
 258      3,  4,  6,  7,  8,  8,  9,  9,  9,  9, 10, 10, 11, 12, 12, 12,
 259      6,  6,  7,  8,  9,  9, 10, 10,  9, 10, 10, 11, 11, 12, 13, 13,
 260      7,  7,  8,  9,  9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 13, 13,
 261      8,  7,  9,  9, 10, 10, 11, 11, 10, 11, 11, 12, 12, 13, 13, 14,
 262      9,  8,  9, 10, 10, 10, 11, 11, 11, 11, 12, 11, 13, 13, 14, 14,
 263      9,  9, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 13, 13, 14, 14,
 264     10,  9, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 16, 16,
 265      9,  8,  9, 10, 10, 11, 11, 12, 12, 12, 12, 13, 13, 14, 15, 15,
 266     10,  9, 10, 10, 11, 11, 11, 13, 12, 13, 13, 14, 14, 14, 16, 15,
 267     10, 10, 10, 11, 11, 12, 12, 13, 12, 13, 14, 13, 14, 15, 16, 17,
 268     11, 10, 10, 11, 12, 12, 12, 12, 13, 13, 13, 14, 15, 15, 15, 16,
 269     11, 11, 11, 12, 12, 13, 12, 13, 14, 14, 15, 15, 15, 16, 16, 16,
 270     12, 11, 12, 13, 13, 13, 14, 14, 14, 14, 14, 15, 16, 15, 16, 16,
 271     13, 12, 12, 13, 13, 13, 15, 14, 14, 17, 15, 15, 15, 17, 16, 16,
 272     12, 12, 13, 14, 14, 14, 15, 14, 15, 15, 16, 16, 19, 18, 19, 16
 273 ];
 274 const MP3_HUFF15_BITS: [u8; 256] = [
 275     0x07, 0x0C, 0x12, 0x35, 0x2F, 0x4C, 0x7C, 0x6C,
 276     0x59, 0x7B, 0x6C, 0x77, 0x6B, 0x51, 0x7A, 0x3F,
 277     0x0D, 0x05, 0x10, 0x1B, 0x2E, 0x24, 0x3D, 0x33,
 278     0x2A, 0x46, 0x34, 0x53, 0x41, 0x29, 0x3B, 0x24,
 279     0x13, 0x11, 0x0F, 0x18, 0x29, 0x22, 0x3B, 0x30,
 280     0x28, 0x40, 0x32, 0x4E, 0x3E, 0x50, 0x38, 0x21,
 281     0x1D, 0x1C, 0x19, 0x2B, 0x27, 0x3F, 0x37, 0x5D,
 282     0x4C, 0x3B, 0x5D, 0x48, 0x36, 0x4B, 0x32, 0x1D,
 283     0x34, 0x16, 0x2A, 0x28, 0x43, 0x39, 0x5F, 0x4F,
 284     0x48, 0x39, 0x59, 0x45, 0x31, 0x42, 0x2E, 0x1B,
 285     0x4D, 0x25, 0x23, 0x42, 0x3A, 0x34, 0x5B, 0x4A,
 286     0x3E, 0x30, 0x4F, 0x3F, 0x5A, 0x3E, 0x28, 0x26,
 287     0x7D, 0x20, 0x3C, 0x38, 0x32, 0x5C, 0x4E, 0x41,
 288     0x37, 0x57, 0x47, 0x33, 0x49, 0x33, 0x46, 0x1E,
 289     0x6D, 0x35, 0x31, 0x5E, 0x58, 0x4B, 0x42, 0x7A,
 290     0x5B, 0x49, 0x38, 0x2A, 0x40, 0x2C, 0x15, 0x19,
 291     0x5A, 0x2B, 0x29, 0x4D, 0x49, 0x3F, 0x38, 0x5C,
 292     0x4D, 0x42, 0x2F, 0x43, 0x30, 0x35, 0x24, 0x14,
 293     0x47, 0x22, 0x43, 0x3C, 0x3A, 0x31, 0x58, 0x4C,
 294     0x43, 0x6A, 0x47, 0x36, 0x26, 0x27, 0x17, 0x0F,
 295     0x6D, 0x35, 0x33, 0x2F, 0x5A, 0x52, 0x3A, 0x39,
 296     0x30, 0x48, 0x39, 0x29, 0x17, 0x1B, 0x3E, 0x09,
 297     0x56, 0x2A, 0x28, 0x25, 0x46, 0x40, 0x34, 0x2B,
 298     0x46, 0x37, 0x2A, 0x19, 0x1D, 0x12, 0x0B, 0x0B,
 299     0x76, 0x44, 0x1E, 0x37, 0x32, 0x2E, 0x4A, 0x41,
 300     0x31, 0x27, 0x18, 0x10, 0x16, 0x0D, 0x0E, 0x07,
 301     0x5B, 0x2C, 0x27, 0x26, 0x22, 0x3F, 0x34, 0x2D,
 302     0x1F, 0x34, 0x1C, 0x13, 0x0E, 0x08, 0x09, 0x03,
 303     0x7B, 0x3C, 0x3A, 0x35, 0x2F, 0x2B, 0x20, 0x16,
 304     0x25, 0x18, 0x11, 0x0C, 0x0F, 0x0A, 0x02, 0x01,
 305     0x47, 0x25, 0x22, 0x1E, 0x1C, 0x14, 0x11, 0x1A,
 306     0x15, 0x10, 0x0A, 0x06, 0x08, 0x06, 0x02, 0x00
 307 ];
 308 const MP3_HUFF15_LENS: [u8; 256] = [
 309      3,  4,  5,  7,  7,  8,  9,  9,  9, 10, 10, 11, 11, 11, 12, 13,
 310      4,  3,  5,  6,  7,  7,  8,  8,  8,  9,  9, 10, 10, 10, 11, 11,
 311      5,  5,  5,  6,  7,  7,  8,  8,  8,  9,  9, 10, 10, 11, 11, 11,
 312      6,  6,  6,  7,  7,  8,  8,  9,  9,  9, 10, 10, 10, 11, 11, 11,
 313      7,  6,  7,  7,  8,  8,  9,  9,  9,  9, 10, 10, 10, 11, 11, 11,
 314      8,  7,  7,  8,  8,  8,  9,  9,  9,  9, 10, 10, 11, 11, 11, 12,
 315      9,  7,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 11, 11, 12, 12,
 316      9,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 10, 11, 11, 11, 12,
 317      9,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 11, 11, 12, 12, 12,
 318      9,  8,  9,  9,  9,  9, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12,
 319     10,  9,  9,  9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 12, 13, 12,
 320     10,  9,  9,  9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13,
 321     11, 10,  9, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 13, 13,
 322     11, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13,
 323     12, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 12, 13,
 324     12, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13
 325 ];
 326 const MP3_HUFF16_BITS: [u16; 256] = [
 327     0x001, 0x005, 0x00E, 0x02C, 0x04A, 0x03F, 0x06E, 0x05D,
 328     0x0AC, 0x095, 0x08A, 0x0F2, 0x0E1, 0x0C3, 0x178, 0x011,
 329     0x003, 0x004, 0x00C, 0x014, 0x023, 0x03E, 0x035, 0x02F,
 330     0x053, 0x04B, 0x044, 0x077, 0x0C9, 0x06B, 0x0CF, 0x009,
 331     0x00F, 0x00D, 0x017, 0x026, 0x043, 0x03A, 0x067, 0x05A,
 332     0x0A1, 0x048, 0x07F, 0x075, 0x06E, 0x0D1, 0x0CE, 0x010,
 333     0x02D, 0x015, 0x027, 0x045, 0x040, 0x072, 0x063, 0x057,
 334     0x09E, 0x08C, 0x0FC, 0x0D4, 0x0C7, 0x183, 0x16D, 0x01A,
 335     0x04B, 0x024, 0x044, 0x041, 0x073, 0x065, 0x0B3, 0x0A4,
 336     0x09B, 0x108, 0x0F6, 0x0E2, 0x18B, 0x17E, 0x16A, 0x009,
 337     0x042, 0x01E, 0x03B, 0x038, 0x066, 0x0B9, 0x0AD, 0x109,
 338     0x08E, 0x0FD, 0x0E8, 0x190, 0x184, 0x17A, 0x1BD, 0x010,
 339     0x06F, 0x036, 0x034, 0x064, 0x0B8, 0x0B2, 0x0A0, 0x085,
 340     0x101, 0x0F4, 0x0E4, 0x0D9, 0x181, 0x16E, 0x2CB, 0x00A,
 341     0x062, 0x030, 0x05B, 0x058, 0x0A5, 0x09D, 0x094, 0x105,
 342     0x0F8, 0x197, 0x18D, 0x174, 0x17C, 0x379, 0x374, 0x008,
 343     0x055, 0x054, 0x051, 0x09F, 0x09C, 0x08F, 0x104, 0x0F9,
 344     0x1AB, 0x191, 0x188, 0x17F, 0x2D7, 0x2C9, 0x2C4, 0x007,
 345     0x09A, 0x04C, 0x049, 0x08D, 0x083, 0x100, 0x0F5, 0x1AA,
 346     0x196, 0x18A, 0x180, 0x2DF, 0x167, 0x2C6, 0x160, 0x00B,
 347     0x08B, 0x081, 0x043, 0x07D, 0x0F7, 0x0E9, 0x0E5, 0x0DB,
 348     0x189, 0x2E7, 0x2E1, 0x2D0, 0x375, 0x372, 0x1B7, 0x004,
 349     0x0F3, 0x078, 0x076, 0x073, 0x0E3, 0x0DF, 0x18C, 0x2EA,
 350     0x2E6, 0x2E0, 0x2D1, 0x2C8, 0x2C2, 0x0DF, 0x1B4, 0x006,
 351     0x0CA, 0x0E0, 0x0DE, 0x0DA, 0x0D8, 0x185, 0x182, 0x17D,
 352     0x16C, 0x378, 0x1BB, 0x2C3, 0x1B8, 0x1B5, 0x6C0, 0x004,
 353     0x2EB, 0x0D3, 0x0D2, 0x0D0, 0x172, 0x17B, 0x2DE, 0x2D3,
 354     0x2CA, 0x6C7, 0x373, 0x36D, 0x36C, 0xD83, 0x361, 0x002,
 355     0x179, 0x171, 0x066, 0x0BB, 0x2D6, 0x2D2, 0x166, 0x2C7,
 356     0x2C5, 0x362, 0x6C6, 0x367, 0xD82, 0x366, 0x1B2, 0x000,
 357     0x00C, 0x00A, 0x007, 0x00B, 0x00A, 0x011, 0x00B, 0x009,
 358     0x00D, 0x00C, 0x00A, 0x007, 0x005, 0x003, 0x001, 0x003
 359 ];
 360 const MP3_HUFF16_LENS: [u8; 256] = [
 361      1,  4,  6,  8,  9,  9, 10, 10, 11, 11, 11, 12, 12, 12, 13,  9,
 362      3,  4,  6,  7,  8,  9,  9,  9, 10, 10, 10, 11, 12, 11, 12,  8,
 363      6,  6,  7,  8,  9,  9, 10, 10, 11, 10, 11, 11, 11, 12, 12,  9,
 364      8,  7,  8,  9,  9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 10,
 365      9,  8,  9,  9, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13,  9,
 366      9,  8,  9,  9, 10, 11, 11, 12, 11, 12, 12, 13, 13, 13, 14, 10,
 367     10,  9,  9, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 14, 10,
 368     10,  9, 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 13, 15, 15, 10,
 369     10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 13, 14, 14, 14, 10,
 370     11, 10, 10, 11, 11, 12, 12, 13, 13, 13, 13, 14, 13, 14, 13, 11,
 371     11, 11, 10, 11, 12, 12, 12, 12, 13, 14, 14, 14, 15, 15, 14, 10,
 372     12, 11, 11, 11, 12, 12, 13, 14, 14, 14, 14, 14, 14, 13, 14, 11,
 373     12, 12, 12, 12, 12, 13, 13, 13, 13, 15, 14, 14, 14, 14, 16, 11,
 374     14, 12, 12, 12, 13, 13, 14, 14, 14, 16, 15, 15, 15, 17, 15, 11,
 375     13, 13, 11, 12, 14, 14, 13, 14, 14, 15, 16, 15, 17, 15, 14, 11,
 376      9,  8,  8,  9,  9, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11,  8
 377 ];
 378 const MP3_HUFF24_BITS: [u16; 256] = [
 379     0x00F, 0x00D, 0x02E, 0x050, 0x092, 0x106, 0x0F8, 0x1B2,
 380     0x1AA, 0x29D, 0x28D, 0x289, 0x26D, 0x205, 0x408, 0x058,
 381     0x00E, 0x00C, 0x015, 0x026, 0x047, 0x082, 0x07A, 0x0D8,
 382     0x0D1, 0x0C6, 0x147, 0x159, 0x13F, 0x129, 0x117, 0x02A,
 383     0x02F, 0x016, 0x029, 0x04A, 0x044, 0x080, 0x078, 0x0DD,
 384     0x0CF, 0x0C2, 0x0B6, 0x154, 0x13B, 0x127, 0x21D, 0x012,
 385     0x051, 0x027, 0x04B, 0x046, 0x086, 0x07D, 0x074, 0x0DC,
 386     0x0CC, 0x0BE, 0x0B2, 0x145, 0x137, 0x125, 0x10F, 0x010,
 387     0x093, 0x048, 0x045, 0x087, 0x07F, 0x076, 0x070, 0x0D2,
 388     0x0C8, 0x0BC, 0x160, 0x143, 0x132, 0x11D, 0x21C, 0x00E,
 389     0x107, 0x042, 0x081, 0x07E, 0x077, 0x072, 0x0D6, 0x0CA,
 390     0x0C0, 0x0B4, 0x155, 0x13D, 0x12D, 0x119, 0x106, 0x00C,
 391     0x0F9, 0x07B, 0x079, 0x075, 0x071, 0x0D7, 0x0CE, 0x0C3,
 392     0x0B9, 0x15B, 0x14A, 0x134, 0x123, 0x110, 0x208, 0x00A,
 393     0x1B3, 0x073, 0x06F, 0x06D, 0x0D3, 0x0CB, 0x0C4, 0x0BB,
 394     0x161, 0x14C, 0x139, 0x12A, 0x11B, 0x213, 0x17D, 0x011,
 395     0x1AB, 0x0D4, 0x0D0, 0x0CD, 0x0C9, 0x0C1, 0x0BA, 0x0B1,
 396     0x0A9, 0x140, 0x12F, 0x11E, 0x10C, 0x202, 0x179, 0x010,
 397     0x14F, 0x0C7, 0x0C5, 0x0BF, 0x0BD, 0x0B5, 0x0AE, 0x14D,
 398     0x141, 0x131, 0x121, 0x113, 0x209, 0x17B, 0x173, 0x00B,
 399     0x29C, 0x0B8, 0x0B7, 0x0B3, 0x0AF, 0x158, 0x14B, 0x13A,
 400     0x130, 0x122, 0x115, 0x212, 0x17F, 0x175, 0x16E, 0x00A,
 401     0x28C, 0x15A, 0x0AB, 0x0A8, 0x0A4, 0x13E, 0x135, 0x12B,
 402     0x11F, 0x114, 0x107, 0x201, 0x177, 0x170, 0x16A, 0x006,
 403     0x288, 0x142, 0x13C, 0x138, 0x133, 0x12E, 0x124, 0x11C,
 404     0x10D, 0x105, 0x200, 0x178, 0x172, 0x16C, 0x167, 0x004,
 405     0x26C, 0x12C, 0x128, 0x126, 0x120, 0x11A, 0x111, 0x10A,
 406     0x203, 0x17C, 0x176, 0x171, 0x16D, 0x169, 0x165, 0x002,
 407     0x409, 0x118, 0x116, 0x112, 0x10B, 0x108, 0x103, 0x17E,
 408     0x17A, 0x174, 0x16F, 0x16B, 0x168, 0x166, 0x164, 0x000,
 409     0x02B, 0x014, 0x013, 0x011, 0x00F, 0x00D, 0x00B, 0x009,
 410     0x007, 0x006, 0x004, 0x007, 0x005, 0x003, 0x001, 0x003
 411 ];
 412 const MP3_HUFF24_LENS: [u8; 256] = [
 413      4,  4,  6,  7,  8,  9,  9, 10, 10, 11, 11, 11, 11, 11, 12,  9,
 414      4,  4,  5,  6,  7,  8,  8,  9,  9,  9, 10, 10, 10, 10, 10,  8,
 415      6,  5,  6,  7,  7,  8,  8,  9,  9,  9,  9, 10, 10, 10, 11,  7,
 416      7,  6,  7,  7,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10,  7,
 417      8,  7,  7,  8,  8,  8,  8,  9,  9,  9, 10, 10, 10, 10, 11,  7,
 418      9,  7,  8,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 10,  7,
 419      9,  8,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 10, 11,  7,
 420     10,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 10, 11, 11,  8,
 421     10,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 11, 11,  8,
 422     10,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 11, 11, 11,  8,
 423     11,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11,  8,
 424     11, 10,  9,  9,  9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11,  8,
 425     11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11,  8,
 426     11, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11,  8,
 427     12, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11,  8,
 428      8,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  8,  8,  8,  8,  4
 429 ];
 430
 431 const MP3_HUFF_SYMS2: [u8; 4] = [ 0x00, 0x01, 0x10, 0x11 ];
 432 const MP3_HUFF_SYMS3: [u8; 9] = [ 0x00, 0x01, 0x02, 0x10, 0x11, 0x12, 0x20, 0x21, 0x22 ];
 433 const MP3_HUFF_SYMS4: [u8; 16] = [
 434     0x00, 0x01, 0x02, 0x03,
 435     0x10, 0x11, 0x12, 0x13,
 436     0x20, 0x21, 0x22, 0x23,
 437     0x30, 0x31, 0x32, 0x33
 438 ];
 439 const MP3_HUFF_SYMS6: [u8; 36] = [
 440     0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
 441     0x10, 0x11, 0x12, 0x13, 0x14, 0x15,
 442     0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
 443     0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
 444     0x40, 0x41, 0x42, 0x43, 0x44, 0x45,
 445     0x50, 0x51, 0x52, 0x53, 0x54, 0x55
 446 ];
 447 const MP3_HUFF_SYMS8: [u8; 64] = [
 448     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
 449     0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
 450     0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
 451     0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
 452     0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 453     0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
 454     0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
 455     0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77
 456 ];
 457
 458 pub struct MP3Codebooks {
 459     pub quad_cb:    Codebook<u8>,
 460     pub cb:         [Codebook<u8>; 15],
 461 }
 462
 463 fn map_cb2(idx: usize) -> u8 { MP3_HUFF_SYMS2[idx] }
 464 fn map_cb3(idx: usize) -> u8 { MP3_HUFF_SYMS3[idx] }
 465 fn map_cb4(idx: usize) -> u8 { MP3_HUFF_SYMS4[idx] }
 466 fn map_cb6(idx: usize) -> u8 { MP3_HUFF_SYMS6[idx] }
 467 fn map_cb8(idx: usize) -> u8 { MP3_HUFF_SYMS8[idx] }
 468 fn map_cb16(idx: usize) -> u8 { idx as u8 }
 469
 470 macro_rules! init_cb {
 471     ($bits: ident, $lens: ident, $map_cb: ident) => ({
 472         let mut cbr = TableCodebookDescReader::new(&$bits, &$lens, $map_cb);
 473         Codebook::new(&mut cbr, CodebookMode::MSB).unwrap()
 474     })
 475 }
 476
 477 impl MP3Codebooks {
 478     pub fn new() -> Self {
 479         let quad_cb = init_cb!(MP3_HUFF_QUAD_A_BITS, MP3_HUFF_QUAD_A_LENS, map_cb16);
 480         let cb = [
 481             init_cb!(MP3_HUFF1_BITS, MP3_HUFF1_LENS, map_cb2),
 482             init_cb!(MP3_HUFF2_BITS, MP3_HUFF2_LENS, map_cb3),
 483             init_cb!(MP3_HUFF3_BITS, MP3_HUFF3_LENS, map_cb3),
 484             init_cb!(MP3_HUFF5_BITS, MP3_HUFF5_LENS, map_cb4),
 485             init_cb!(MP3_HUFF6_BITS, MP3_HUFF6_LENS, map_cb4),
 486             init_cb!(MP3_HUFF7_BITS, MP3_HUFF7_LENS, map_cb6),
 487             init_cb!(MP3_HUFF8_BITS, MP3_HUFF8_LENS, map_cb6),
 488             init_cb!(MP3_HUFF9_BITS, MP3_HUFF9_LENS, map_cb6),
 489             init_cb!(MP3_HUFF10_BITS, MP3_HUFF10_LENS, map_cb8),
 490             init_cb!(MP3_HUFF11_BITS, MP3_HUFF11_LENS, map_cb8),
 491             init_cb!(MP3_HUFF12_BITS, MP3_HUFF12_LENS, map_cb8),
 492             init_cb!(MP3_HUFF13_BITS, MP3_HUFF13_LENS, map_cb16),
 493             init_cb!(MP3_HUFF15_BITS, MP3_HUFF15_LENS, map_cb16),
 494             init_cb!(MP3_HUFF16_BITS, MP3_HUFF16_LENS, map_cb16),
 495             init_cb!(MP3_HUFF24_BITS, MP3_HUFF24_LENS, map_cb16)
 496         ];
 497
 498         Self { quad_cb, cb }
 499     }
 500     pub fn get_cb(&self, cb_id: u8) -> Option<(&Codebook<u8>, u8)> {
 501         match cb_id {
 502              0 => None,
 503              1 => Some((&self.cb[0], 0)),
 504              2 => Some((&self.cb[1], 0)),
 505              3 => Some((&self.cb[2], 0)),
 506              5 => Some((&self.cb[3], 0)),
 507              6 => Some((&self.cb[4], 0)),
 508              7 => Some((&self.cb[5], 0)),
 509              8 => Some((&self.cb[6], 0)),
 510              9 => Some((&self.cb[7], 0)),
 511             10 => Some((&self.cb[8], 0)),
 512             11 => Some((&self.cb[9], 0)),
 513             12 => Some((&self.cb[10], 0)),
 514             13 => Some((&self.cb[11], 0)),
 515             15 => Some((&self.cb[12], 0)),
 516             16 => Some((&self.cb[13], 1)),
 517             17 => Some((&self.cb[13], 2)),
 518             18 => Some((&self.cb[13], 3)),
 519             19 => Some((&self.cb[13], 4)),
 520             20 => Some((&self.cb[13], 6)),
 521             21 => Some((&self.cb[13], 8)),
 522             22 => Some((&self.cb[13], 10)),
 523             23 => Some((&self.cb[13], 13)),
 524             24 => Some((&self.cb[14], 4)),
 525             25 => Some((&self.cb[14], 5)),
 526             26 => Some((&self.cb[14], 6)),
 527             27 => Some((&self.cb[14], 7)),
 528             28 => Some((&self.cb[14], 8)),
 529             29 => Some((&self.cb[14], 9)),
 530             30 => Some((&self.cb[14], 11)),
 531             31 => Some((&self.cb[14], 13)),
 532             _ => unreachable!(),
 533         }
 534     }
 535 }