h264data.h

手机端的H264源码

static const uint8_t luma_dc_field_scan[16]={
 0*16 + 0*64, 2*16 + 0*64, 1*16 + 0*64, 0*16 + 2*64, 
 2*16 + 2*64, 3*16 + 0*64, 1*16 + 2*64, 3*16 + 2*64, 
 0*16 + 1*64, 2*16 + 1*64, 0*16 + 3*64, 2*16 + 3*64, 
 1*16 + 1*64, 3*16 + 1*64, 1*16 + 3*64, 3*16 + 3*64,
};

static const uint8_t chroma_dc_scan[4]={
 (0+0*2)*16, (1+0*2)*16, 
 (0+1*2)*16, (1+1*2)*16,  //FIXME
};

#define MB_TYPE_REF0       MB_TYPE_ACPRED //dirty but it fits in 16bit
#define IS_REF0(a)       ((a)&MB_TYPE_REF0)

typedef struct IMbInfo{
    uint16_t type;
    uint8_t pred_mode;
    uint8_t cbp;
} IMbInfo;

static const IMbInfo i_mb_type_info[26]={
{MB_TYPE_INTRA4x4  , -1, -1},
{MB_TYPE_INTRA16x16,  2,  0},
{MB_TYPE_INTRA16x16,  1,  0},
{MB_TYPE_INTRA16x16,  0,  0},
{MB_TYPE_INTRA16x16,  3,  0},
{MB_TYPE_INTRA16x16,  2,  16},
{MB_TYPE_INTRA16x16,  1,  16},
{MB_TYPE_INTRA16x16,  0,  16},
{MB_TYPE_INTRA16x16,  3,  16},
{MB_TYPE_INTRA16x16,  2,  32},
{MB_TYPE_INTRA16x16,  1,  32},
{MB_TYPE_INTRA16x16,  0,  32},
{MB_TYPE_INTRA16x16,  3,  32},
{MB_TYPE_INTRA16x16,  2,  15+0},
{MB_TYPE_INTRA16x16,  1,  15+0},
{MB_TYPE_INTRA16x16,  0,  15+0},
{MB_TYPE_INTRA16x16,  3,  15+0},
{MB_TYPE_INTRA16x16,  2,  15+16},
{MB_TYPE_INTRA16x16,  1,  15+16},
{MB_TYPE_INTRA16x16,  0,  15+16},
{MB_TYPE_INTRA16x16,  3,  15+16},
{MB_TYPE_INTRA16x16,  2,  15+32},
{MB_TYPE_INTRA16x16,  1,  15+32},
{MB_TYPE_INTRA16x16,  0,  15+32},
{MB_TYPE_INTRA16x16,  3,  15+32},
{MB_TYPE_INTRA_PCM , -1, -1},
};

typedef struct PMbInfo{
    uint16_t type;
    uint8_t partition_count;
} PMbInfo;

static const PMbInfo p_mb_type_info[5]={
{MB_TYPE_16x16|MB_TYPE_P0L0             , 1},
{MB_TYPE_16x8 |MB_TYPE_P0L0|MB_TYPE_P1L0, 2},
{MB_TYPE_8x16 |MB_TYPE_P0L0|MB_TYPE_P1L0, 2},
{MB_TYPE_8x8                            , 4},
{MB_TYPE_8x8  |MB_TYPE_REF0             , 4},
};

static const PMbInfo p_sub_mb_type_info[4]={
{MB_TYPE_16x16|MB_TYPE_P0L0             , 1},
{MB_TYPE_16x8 |MB_TYPE_P0L0             , 2},
{MB_TYPE_8x16 |MB_TYPE_P0L0             , 2},
{MB_TYPE_8x8  |MB_TYPE_P0L0             , 4},
};

static const PMbInfo b_mb_type_info[23]={
{MB_TYPE_DIRECT2                                                   , 1, },
{MB_TYPE_16x16|MB_TYPE_P0L0                                       , 1, },
{MB_TYPE_16x16             |MB_TYPE_P0L1                          , 1, },
{MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1                          , 1, },
{MB_TYPE_16x8 |MB_TYPE_P0L0             |MB_TYPE_P1L0             , 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0             |MB_TYPE_P1L0             , 2, },
{MB_TYPE_16x8              |MB_TYPE_P0L1             |MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16              |MB_TYPE_P0L1             |MB_TYPE_P1L1, 2, },
{MB_TYPE_16x8 |MB_TYPE_P0L0                          |MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0                          |MB_TYPE_P1L1, 2, },
{MB_TYPE_16x8              |MB_TYPE_P0L1|MB_TYPE_P1L0             , 2, },
{MB_TYPE_8x16              |MB_TYPE_P0L1|MB_TYPE_P1L0             , 2, },
{MB_TYPE_16x8 |MB_TYPE_P0L0             |MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0             |MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_16x8              |MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16              |MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_16x8 |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0             , 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0             , 2, },
{MB_TYPE_16x8 |MB_TYPE_P0L0|MB_TYPE_P0L1             |MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0|MB_TYPE_P0L1             |MB_TYPE_P1L1, 2, },
{MB_TYPE_16x8 |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_8x8                                                      , 4, },
};

static const PMbInfo b_sub_mb_type_info[13]={
{MB_TYPE_DIRECT2                                                   , 1, },
{MB_TYPE_16x16|MB_TYPE_P0L0                                       , 1, },
{MB_TYPE_16x16             |MB_TYPE_P0L1                          , 1, },
{MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1                          , 1, },
{MB_TYPE_16x8 |MB_TYPE_P0L0             |MB_TYPE_P1L0             , 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0             |MB_TYPE_P1L0             , 2, },
{MB_TYPE_16x8              |MB_TYPE_P0L1             |MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16              |MB_TYPE_P0L1             |MB_TYPE_P1L1, 2, },
{MB_TYPE_16x8 |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_8x16 |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 2, },
{MB_TYPE_8x8  |MB_TYPE_P0L0             |MB_TYPE_P1L0             , 4, },
{MB_TYPE_8x8               |MB_TYPE_P0L1             |MB_TYPE_P1L1, 4, },
{MB_TYPE_8x8  |MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_P1L0|MB_TYPE_P1L1, 4, },
};


static const uint8_t rem6[52]={
0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 
};

static const uint8_t div6[52]={
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
};

static const uint16_t dequant_coeff[52][16]={
{  10,  13,  10,  13,   13,  16,  13,  16,   10,  13,  10,  13,   13,  16,  13,  16, },
{  11,  14,  11,  14,   14,  18,  14,  18,   11,  14,  11,  14,   14,  18,  14,  18, },
{  13,  16,  13,  16,   16,  20,  16,  20,   13,  16,  13,  16,   16,  20,  16,  20, },
{  14,  18,  14,  18,   18,  23,  18,  23,   14,  18,  14,  18,   18,  23,  18,  23, },
{  16,  20,  16,  20,   20,  25,  20,  25,   16,  20,  16,  20,   20,  25,  20,  25, },
{  18,  23,  18,  23,   23,  29,  23,  29,   18,  23,  18,  23,   23,  29,  23,  29, },
{  20,  26,  20,  26,   26,  32,  26,  32,   20,  26,  20,  26,   26,  32,  26,  32, },
{  22,  28,  22,  28,   28,  36,  28,  36,   22,  28,  22,  28,   28,  36,  28,  36, },
{  26,  32,  26,  32,   32,  40,  32,  40,   26,  32,  26,  32,   32,  40,  32,  40, },
{  28,  36,  28,  36,   36,  46,  36,  46,   28,  36,  28,  36,   36,  46,  36,  46, },
{  32,  40,  32,  40,   40,  50,  40,  50,   32,  40,  32,  40,   40,  50,  40,  50, },
{  36,  46,  36,  46,   46,  58,  46,  58,   36,  46,  36,  46,   46,  58,  46,  58, },
{  40,  52,  40,  52,   52,  64,  52,  64,   40,  52,  40,  52,   52,  64,  52,  64, },
{  44,  56,  44,  56,   56,  72,  56,  72,   44,  56,  44,  56,   56,  72,  56,  72, },
{  52,  64,  52,  64,   64,  80,  64,  80,   52,  64,  52,  64,   64,  80,  64,  80, },
{  56,  72,  56,  72,   72,  92,  72,  92,   56,  72,  56,  72,   72,  92,  72,  92, },
{  64,  80,  64,  80,   80, 100,  80, 100,   64,  80,  64,  80,   80, 100,  80, 100, },
{  72,  92,  72,  92,   92, 116,  92, 116,   72,  92,  72,  92,   92, 116,  92, 116, },
{  80, 104,  80, 104,  104, 128, 104, 128,   80, 104,  80, 104,  104, 128, 104, 128, },
{  88, 112,  88, 112,  112, 144, 112, 144,   88, 112,  88, 112,  112, 144, 112, 144, },
{ 104, 128, 104, 128,  128, 160, 128, 160,  104, 128, 104, 128,  128, 160, 128, 160, },
{ 112, 144, 112, 144,  144, 184, 144, 184,  112, 144, 112, 144,  144, 184, 144, 184, },
{ 128, 160, 128, 160,  160, 200, 160, 200,  128, 160, 128, 160,  160, 200, 160, 200, },
{ 144, 184, 144, 184,  184, 232, 184, 232,  144, 184, 144, 184,  184, 232, 184, 232, },
{ 160, 208, 160, 208,  208, 256, 208, 256,  160, 208, 160, 208,  208, 256, 208, 256, },
{ 176, 224, 176, 224,  224, 288, 224, 288,  176, 224, 176, 224,  224, 288, 224, 288, },
{ 208, 256, 208, 256,  256, 320, 256, 320,  208, 256, 208, 256,  256, 320, 256, 320, },
{ 224, 288, 224, 288,  288, 368, 288, 368,  224, 288, 224, 288,  288, 368, 288, 368, },
{ 256, 320, 256, 320,  320, 400, 320, 400,  256, 320, 256, 320,  320, 400, 320, 400, },
{ 288, 368, 288, 368,  368, 464, 368, 464,  288, 368, 288, 368,  368, 464, 368, 464, },
{ 320, 416, 320, 416,  416, 512, 416, 512,  320, 416, 320, 416,  416, 512, 416, 512, },
{ 352, 448, 352, 448,  448, 576, 448, 576,  352, 448, 352, 448,  448, 576, 448, 576, },
{ 416, 512, 416, 512,  512, 640, 512, 640,  416, 512, 416, 512,  512, 640, 512, 640, },
{ 448, 576, 448, 576,  576, 736, 576, 736,  448, 576, 448, 576,  576, 736, 576, 736, },
{ 512, 640, 512, 640,  640, 800, 640, 800,  512, 640, 512, 640,  640, 800, 640, 800, },
{ 576, 736, 576, 736,  736, 928, 736, 928,  576, 736, 576, 736,  736, 928, 736, 928, },
{ 640, 832, 640, 832,  832,1024, 832,1024,  640, 832, 640, 832,  832,1024, 832,1024, },
{ 704, 896, 704, 896,  896,1152, 896,1152,  704, 896, 704, 896,  896,1152, 896,1152, },
{ 832,1024, 832,1024, 1024,1280,1024,1280,  832,1024, 832,1024, 1024,1280,1024,1280, },
{ 896,1152, 896,1152, 1152,1472,1152,1472,  896,1152, 896,1152, 1152,1472,1152,1472, },
{1024,1280,1024,1280, 1280,1600,1280,1600, 1024,1280,1024,1280, 1280,1600,1280,1600, },
{1152,1472,1152,1472, 1472,1856,1472,1856, 1152,1472,1152,1472, 1472,1856,1472,1856, },
{1280,1664,1280,1664, 1664,2048,1664,2048, 1280,1664,1280,1664, 1664,2048,1664,2048, },
{1408,1792,1408,1792, 1792,2304,1792,2304, 1408,1792,1408,1792, 1792,2304,1792,2304, },
{1664,2048,1664,2048, 2048,2560,2048,2560, 1664,2048,1664,2048, 2048,2560,2048,2560, },
{1792,2304,1792,2304, 2304,2944,2304,2944, 1792,2304,1792,2304, 2304,2944,2304,2944, },
{2048,2560,2048,2560, 2560,3200,2560,3200, 2048,2560,2048,2560, 2560,3200,2560,3200, },
{2304,2944,2304,2944, 2944,3712,2944,3712, 2304,2944,2304,2944, 2944,3712,2944,3712, },
{2560,3328,2560,3328, 3328,4096,3328,4096, 2560,3328,2560,3328, 3328,4096,3328,4096, },
{2816,3584,2816,3584, 3584,4608,3584,4608, 2816,3584,2816,3584, 3584,4608,3584,4608, },
{3328,4096,3328,4096, 4096,5120,4096,5120, 3328,4096,3328,4096, 4096,5120,4096,5120, },
{3584,4608,3584,4608, 4608,5888,4608,5888, 3584,4608,3584,4608, 4608,5888,4608,5888, },
//{4096,5120,4096,5120, 5120,6400,5120,6400, 4096,5120,4096,5120, 5120,6400,5120,6400, },
//{4608,5888,4608,5888, 5888,7424,5888,7424, 4608,5888,4608,5888, 5888,7424,5888,7424, },
};

#define QUANT_SHIFT 22

static const int quant_coeff[52][16]={
    { 419430,258111,419430,258111,258111,167772,258111,167772,419430,258111,419430,258111,258111,167772,258111,167772,},
    { 381300,239675,381300,239675,239675,149131,239675,149131,381300,239675,381300,239675,239675,149131,239675,149131,},
    { 322639,209715,322639,209715,209715,134218,209715,134218,322639,209715,322639,209715,209715,134218,209715,134218,},
    { 299593,186414,299593,186414,186414,116711,186414,116711,299593,186414,299593,186414,186414,116711,186414,116711,},
    { 262144,167772,262144,167772,167772,107374,167772,107374,262144,167772,262144,167772,167772,107374,167772,107374,},
    { 233017,145889,233017,145889,145889, 92564,145889, 92564,233017,145889,233017,145889,145889, 92564,145889, 92564,},
    { 209715,129056,209715,129056,129056, 83886,129056, 83886,209715,129056,209715,129056,129056, 83886,129056, 83886,},
    { 190650,119837,190650,119837,119837, 74565,119837, 74565,190650,119837,190650,119837,119837, 74565,119837, 74565,},
    { 161319,104858,161319,104858,104858, 67109,104858, 67109,161319,104858,161319,104858,104858, 67109,104858, 67109,},
    { 149797, 93207,149797, 93207, 93207, 58356, 93207, 58356,149797, 93207,149797, 93207, 93207, 58356, 93207, 58356,},
    { 131072, 83886,131072, 83886, 83886, 53687, 83886, 53687,131072, 83886,131072, 83886, 83886, 53687, 83886, 53687,},
    { 116508, 72944,116508, 72944, 72944, 46282, 72944, 46282,116508, 72944,116508, 72944, 72944, 46282, 72944, 46282,},
    { 104858, 64528,104858, 64528, 64528, 41943, 64528, 41943,104858, 64528,104858, 64528, 64528, 41943, 64528, 41943,},
    {  95325, 59919, 95325, 59919, 59919, 37283, 59919, 37283, 95325, 59919, 95325, 59919, 59919, 37283, 59919, 37283,},
    {  80660, 52429, 80660, 52429, 52429, 33554, 52429, 33554, 80660, 52429, 80660, 52429, 52429, 33554, 52429, 33554,},
    {  74898, 46603, 74898, 46603, 46603, 29178, 46603, 29178, 74898, 46603, 74898, 46603, 46603, 29178, 46603, 29178,},
    {  65536, 41943, 65536, 41943, 41943, 26844, 41943, 26844, 65536, 41943, 65536, 41943, 41943, 26844, 41943, 26844,},
    {  58254, 36472, 58254, 36472, 36472, 23141, 36472, 23141, 58254, 36472, 58254, 36472, 36472, 23141, 36472, 23141,},
    {  52429, 32264, 52429, 32264, 32264, 20972, 32264, 20972, 52429, 32264, 52429, 32264, 32264, 20972, 32264, 20972,},
    {  47663, 29959, 47663, 29959, 29959, 18641, 29959, 18641, 47663, 29959, 47663, 29959, 29959, 18641, 29959, 18641,},
    {  40330, 26214, 40330, 26214, 26214, 16777, 26214, 16777, 40330, 26214, 40330, 26214, 26214, 16777, 26214, 16777,},
    {  37449, 23302, 37449, 23302, 23302, 14589, 23302, 14589, 37449, 23302, 37449, 23302, 23302, 14589, 23302, 14589,},
    {  32768, 20972, 32768, 20972, 20972, 13422, 20972, 13422, 32768, 20972, 32768, 20972, 20972, 13422, 20972, 13422,},
    {  29127, 18236, 29127, 18236, 18236, 11570, 18236, 11570, 29127, 18236, 29127, 18236, 18236, 11570, 18236, 11570,},
    {  26214, 16132, 26214, 16132, 16132, 10486, 16132, 10486, 26214, 16132, 26214, 16132, 16132, 10486, 16132, 10486,},
    {  23831, 14980, 23831, 14980, 14980,  9321, 14980,  9321, 23831, 14980, 23831, 14980, 14980,  9321, 14980,  9321,},
    {  20165, 13107, 20165, 13107, 13107,  8389, 13107,  8389, 20165, 13107, 20165, 13107, 13107,  8389, 13107,  8389,},
    {  18725, 11651, 18725, 11651, 11651,  7294, 11651,  7294, 18725, 11651, 18725, 11651, 11651,  7294, 11651,  7294,},
    {  16384, 10486, 16384, 10486, 10486,  6711, 10486,  6711, 16384, 10486, 16384, 10486, 10486,  6711, 10486,  6711,},
    {  14564,  9118, 14564,  9118,  9118,  5785,  9118,  5785, 14564,  9118, 14564,  9118,  9118,  5785,  9118,  5785,},
    {  13107,  8066, 13107,  8066,  8066,  5243,  8066,  5243, 13107,  8066, 13107,  8066,  8066,  5243,  8066,  5243,},
    {  11916,  7490, 11916,  7490,  7490,  4660,  7490,  4660, 11916,  7490, 11916,  7490,  7490,  4660,  7490,  4660,},
    {  10082,  6554, 10082,  6554,  6554,  4194,  6554,  4194, 10082,  6554, 10082,  6554,  6554,  4194,  6554,  4194,},
    {   9362,  5825,  9362,  5825,  5825,  3647,  5825,  3647,  9362,  5825,  9362,  5825,  5825,  3647,  5825,  3647,},
    {   8192,  5243,  8192,  5243,  5243,  3355,  5243,  3355,  8192,  5243,  8192,  5243,  5243,  3355,  5243,  3355,},
    {   7282,  4559,  7282,  4559,  4559,  2893,  4559,  2893,  7282,  4559,  7282,  4559,  4559,  2893,  4559,  2893,},
    {   6554,  4033,  6554,  4033,  4033,  2621,  4033,  2621,  6554,  4033,  6554,  4033,  4033,  2621,  4033,  2621,},
    {   5958,  3745,  5958,  3745,  3745,  2330,  3745,  2330,  5958,  3745,  5958,  3745,  3745,  2330,  3745,  2330,},
    {   5041,  3277,  5041,  3277,  3277,  2097,  3277,  2097,  5041,  3277,  5041,  3277,  3277,  2097,  3277,  2097,},
    {   4681,  2913,  4681,  2913,  2913,  1824,  2913,  1824,  4681,  2913,  4681,  2913,  2913,  1824,  2913,  1824,},
    {   4096,  2621,  4096,  2621,  2621,  1678,  2621,  1678,  4096,  2621,  4096,  2621,  2621,  1678,  2621,  1678,},
    {   3641,  2280,  3641,  2280,  2280,  1446,  2280,  1446,  3641,  2280,  3641,  2280,  2280,  1446,  2280,  1446,},
    {   3277,  2016,  3277,  2016,  2016,  1311,  2016,  1311,  3277,  2016,  3277,  2016,  2016,  1311,  2016,  1311,},
    {   2979,  1872,  2979,  1872,  1872,  1165,  1872,  1165,  2979,  1872,  2979,  1872,  1872,  1165,  1872,  1165,},
    {   2521,  1638,  2521,  1638,  1638,  1049,  1638,  1049,  2521,  1638,  2521,  1638,  1638,  1049,  1638,  1049,},
    {   2341,  1456,  2341,  1456,  1456,   912,  1456,   912,  2341,  1456,  2341,  1456,  1456,   912,  1456,   912,},
    {   2048,  1311,  2048,  1311,  1311,   839,  1311,   839,  2048,  1311,  2048,  1311,  1311,   839,  1311,   839,},
    {   1820,  1140,  1820,  1140,  1140,   723,  1140,   723,  1820,  1140,  1820,  1140,  1140,   723,  1140,   723,},
    {   1638,  1008,  1638,  1008,  1008,   655,  1008,   655,  1638,  1008,  1638,  1008,  1008,   655,  1008,   655,},
    {   1489,   936,  1489,   936,   936,   583,   936,   583,  1489,   936,  1489,   936,   936,   583,   936,   583,},
    {   1260,   819,  1260,   819,   819,   524,   819,   524,  1260,   819,  1260,   819,   819,   524,   819,   524,},
    {   1170,   728,  1170,   728,   728,   456,   728,   456,  1170,   728,  1170,   728,   728,   456,   728,   456,},
};


/* Deblocking filter (p153) */
static const int alpha_table[52] = {
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  4,  4,  5,  6,
     7,  8,  9, 10, 12, 13, 15, 17, 20, 22,
    25, 28, 32, 36, 40, 45, 50, 56, 63, 71,
    80, 90,101,113,127,144,162,182,203,226,
    255, 255
};
static const int beta_table[52] = {
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  2,  2,  2,  3,
     3,  3,  3,  4,  4,  4,  6,  6,  7,  7,
     8,  8,  9,  9, 10, 10, 11, 11, 12, 12,
    13, 13, 14, 14, 15, 15, 16, 16, 17, 17,
    18, 18
};
static const int tc0_table[52][3] = {
    { 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 }, { 0, 0, 0 },
    { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 1 },
    { 0, 0, 1 }, { 0, 0, 1 }, { 0, 0, 1 }, { 0, 1, 1 }, { 0, 1, 1 }, { 1, 1, 1 },
    { 1, 1, 1 }, { 1, 1, 1 }, { 1, 1, 1 }, { 1, 1, 2 }, { 1, 1, 2 }, { 1, 1, 2 },
    { 1, 1, 2 }, { 1, 2, 3 }, { 1, 2, 3 }, { 2, 2, 3 }, { 2, 2, 4 }, { 2, 3, 4 },
    { 2, 3, 4 }, { 3, 3, 5 }, { 3, 4, 6 }, { 3, 4, 6 }, { 4, 5, 7 }, { 4, 5, 8 },
    { 4, 6, 9 }, { 5, 7,10 }, { 6, 8,11 }, { 6, 8,13 }, { 7,10,14 }, { 8,11,16 },
    { 9,12,18 }, {10,13,20 }, {11,15,23 }, {13,17,25 }
};

/* Cabac pre state table */

static const int cabac_context_init_I[399][2] =
{
    /* 0 - 10 */
    { 20, -15 }, {  2, 54 },  {  3,  74 }, { 20, -15 },
    {  2,  54 }, {  3, 74 },  { -28,127 }, { -23, 104 },
    { -6,  53 }, { -1, 54 },  {  7,  51 },

    /* 11 - 23 unsused for I */
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },