colorspace_tables.h

这个库实现了录象功能

  0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xaf, 0xb0, 
  0xb1, 0xb2, 0xb3, 0xb4, 0xb6, 0xb7, 0xb8, 0xb9, 
  0xba, 0xbb, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 
  0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xcb, 0xcc, 
  0xcd, 0xce, 0xcf, 0xd0, 0xd2, 0xd3, 0xd4, 0xd5, 
  0xd6, 0xd7, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 
  0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe7, 0xe8, 
  0xe9, 0xea, 0xeb, 0xec, 0xee, 0xef, 0xf0, 0xf1, 
  0xf2, 0xf3, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 
  0xfc, 0xfd, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
};

static uint8_t uv_8_to_uvj_8[256] = 
{
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
  0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 
  0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x12, 
  0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x1a, 0x1b, 
  0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x22, 0x23, 0x24, 
  0x25, 0x26, 0x27, 0x28, 0x29, 0x2b, 0x2c, 0x2d, 
  0x2e, 0x2f, 0x30, 0x31, 0x33, 0x34, 0x35, 0x36, 
  0x37, 0x38, 0x39, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 
  0x40, 0x41, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 
  0x49, 0x4a, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 
  0x52, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 
  0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x64, 
  0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6c, 0x6d, 
  0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x75, 0x76, 
  0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7d, 0x7e, 0x7f, 
  0x80, 0x81, 0x82, 0x83, 0x85, 0x86, 0x87, 0x88, 
  0x89, 0x8a, 0x8b, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 
  0x92, 0x93, 0x94, 0x96, 0x97, 0x98, 0x99, 0x9a, 
  0x9b, 0x9c, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 
  0xa4, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 
  0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb6, 
  0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbf, 
  0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc7, 0xc8, 
  0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xcf, 0xd0, 0xd1, 
  0xd2, 0xd3, 0xd4, 0xd5, 0xd7, 0xd8, 0xd9, 0xda, 
  0xdb, 0xdc, 0xdd, 0xde, 0xe0, 0xe1, 0xe2, 0xe3, 
  0xe4, 0xe5, 0xe6, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 
  0xed, 0xee, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 
  0xf6, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
};

#endif // HAVE_YUV_8_TO_YUVJ

#ifdef HAVE_RGB_16_TO_RGB_24

static uint8_t rgb_5_to_8[32] = 
{
  0x00, 0x08, 0x10, 0x19, 0x21, 0x29, 0x31, 0x3a, 
  0x42, 0x4a, 0x52, 0x5a, 0x63, 0x6b, 0x73, 0x7b, 
  0x84, 0x8c, 0x94, 0x9c, 0xa5, 0xad, 0xb5, 0xbd, 
  0xc5, 0xce, 0xd6, 0xde, 0xe6, 0xef, 0xf7, 0xff, 
};

static uint8_t rgb_6_to_8[64] = 
{
  0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x1c, 
  0x20, 0x24, 0x28, 0x2d, 0x31, 0x35, 0x39, 0x3d, 
  0x41, 0x45, 0x49, 0x4d, 0x51, 0x55, 0x59, 0x5d, 
  0x61, 0x65, 0x69, 0x6d, 0x71, 0x75, 0x79, 0x7d, 
  0x82, 0x86, 0x8a, 0x8e, 0x92, 0x96, 0x9a, 0x9e, 
  0xa2, 0xa6, 0xaa, 0xae, 0xb2, 0xb6, 0xba, 0xbe, 
  0xc2, 0xc6, 0xca, 0xce, 0xd2, 0xd7, 0xdb, 0xdf, 
  0xe3, 0xe7, 0xeb, 0xef, 0xf3, 0xf7, 0xfb, 0xff, 
};

#endif // HAVE_RGB_16_TO_RGB_24

#ifdef HAVE_RGB_16_TO_RGB_48

static uint16_t rgb_5_to_16[32] = 
{
  0x0000, 0x0842, 0x1084, 0x18c6, 0x2108, 0x294a, 0x318c, 0x39ce, 
  0x4210, 0x4a52, 0x5294, 0x5ad6, 0x6318, 0x6b5a, 0x739c, 0x7bde, 
  0x8421, 0x8c63, 0x94a5, 0x9ce7, 0xa529, 0xad6b, 0xb5ad, 0xbdef, 
  0xc631, 0xce73, 0xd6b5, 0xdef7, 0xe739, 0xef7b, 0xf7bd, 0xffff, 
};

static uint16_t rgb_6_to_16[64] = 
{
  0x0000, 0x0410, 0x0820, 0x0c31, 0x1041, 0x1451, 0x1861, 0x1c72, 
  0x2082, 0x2492, 0x28a2, 0x2cb3, 0x30c3, 0x34d3, 0x38e3, 0x3cf4, 
  0x4104, 0x4514, 0x4924, 0x4d35, 0x5145, 0x5555, 0x5965, 0x5d75, 
  0x6186, 0x6596, 0x69a6, 0x6db6, 0x71c7, 0x75d7, 0x79e7, 0x7df7, 
  0x8208, 0x8618, 0x8a28, 0x8e38, 0x9249, 0x9659, 0x9a69, 0x9e79, 
  0xa28a, 0xa69a, 0xaaaa, 0xaeba, 0xb2ca, 0xb6db, 0xbaeb, 0xbefb, 
  0xc30b, 0xc71c, 0xcb2c, 0xcf3c, 0xd34c, 0xd75d, 0xdb6d, 0xdf7d, 
  0xe38d, 0xe79e, 0xebae, 0xefbe, 0xf3ce, 0xf7df, 0xfbef, 0xffff, 
};

#endif // HAVE_RGB_16_TO_RGB_48

#ifdef HAVE_RGB_16_TO_RGB_FLOAT

static float rgb_5_to_float[32] = 
{
  0.000000, 0.032258, 0.064516, 0.096774, 0.129032, 0.161290, 0.193548, 0.225806, 
  0.258065, 0.290323, 0.322581, 0.354839, 0.387097, 0.419355, 0.451613, 0.483871, 
  0.516129, 0.548387, 0.580645, 0.612903, 0.645161, 0.677419, 0.709677, 0.741935, 
  0.774194, 0.806452, 0.838710, 0.870968, 0.903226, 0.935484, 0.967742, 1.000000, 
};

static float rgb_6_to_float[64] = 
{
  0.000000, 0.015873, 0.031746, 0.047619, 0.063492, 0.079365, 0.095238, 0.111111, 
  0.126984, 0.142857, 0.158730, 0.174603, 0.190476, 0.206349, 0.222222, 0.238095, 
  0.253968, 0.269841, 0.285714, 0.301587, 0.317460, 0.333333, 0.349206, 0.365079, 
  0.380952, 0.396825, 0.412698, 0.428571, 0.444444, 0.460317, 0.476190, 0.492063, 
  0.507937, 0.523810, 0.539683, 0.555556, 0.571429, 0.587302, 0.603175, 0.619048, 
  0.634921, 0.650794, 0.666667, 0.682540, 0.698413, 0.714286, 0.730159, 0.746032, 
  0.761905, 0.777778, 0.793651, 0.809524, 0.825397, 0.841270, 0.857143, 0.873016, 
  0.888889, 0.904762, 0.920635, 0.936508, 0.952381, 0.968254, 0.984127, 1.000000, 
};

#endif // HAVE_RGB_16_TO_RGB_FLOAT

/* RGB -> YUV conversions */
#ifdef HAVE_RGB_TO_YUV

static int r_to_y[256] = 
{
  1048576, 1065405, 1082234, 1099063, 1115891, 1132720, 1149549, 1166378, 
  1183207, 1200036, 1216865, 1233694, 1250522, 1267351, 1284180, 1301009, 
  1317838, 1334667, 1351496, 1368325, 1385153, 1401982, 1418811, 1435640, 
  1452469, 1469298, 1486127, 1502956, 1519784, 1536613, 1553442, 1570271, 
  1587100, 1603929, 1620758, 1637587, 1654415, 1671244, 1688073, 1704902, 
  1721731, 1738560, 1755389, 1772218, 1789046, 1805875, 1822704, 1839533, 
  1856362, 1873191, 1890020, 1906849, 1923677, 1940506, 1957335, 1974164, 
  1990993, 2007822, 2024651, 2041480, 2058308, 2075137, 2091966, 2108795, 
  2125624, 2142453, 2159282, 2176111, 2192939, 2209768, 2226597, 2243426, 
  2260255, 2277084, 2293913, 2310742, 2327570, 2344399, 2361228, 2378057, 
  2394886, 2411715, 2428544, 2445373, 2462201, 2479030, 2495859, 2512688, 
  2529517, 2546346, 2563175, 2580004, 2596832, 2613661, 2630490, 2647319, 
  2664148, 2680977, 2697806, 2714635, 2731463, 2748292, 2765121, 2781950, 
  2798779, 2815608, 2832437, 2849265, 2866094, 2882923, 2899752, 2916581, 
  2933410, 2950239, 2967068, 2983896, 3000725, 3017554, 3034383, 3051212, 
  3068041, 3084870, 3101699, 3118527, 3135356, 3152185, 3169014, 3185843, 
  3202672, 3219501, 3236330, 3253158, 3269987, 3286816, 3303645, 3320474, 
  3337303, 3354132, 3370961, 3387789, 3404618, 3421447, 3438276, 3455105, 
  3471934, 3488763, 3505592, 3522420, 3539249, 3556078, 3572907, 3589736, 
  3606565, 3623394, 3640223, 3657051, 3673880, 3690709, 3707538, 3724367, 
  3741196, 3758025, 3774854, 3791682, 3808511, 3825340, 3842169, 3858998, 
  3875827, 3892656, 3909485, 3926313, 3943142, 3959971, 3976800, 3993629, 
  4010458, 4027287, 4044116, 4060944, 4077773, 4094602, 4111431, 4128260, 
  4145089, 4161918, 4178747, 4195575, 4212404, 4229233, 4246062, 4262891, 
  4279720, 4296549, 4313378, 4330206, 4347035, 4363864, 4380693, 4397522, 
  4414351, 4431180, 4448009, 4464837, 4481666, 4498495, 4515324, 4532153, 
  4548982, 4565811, 4582639, 4599468, 4616297, 4633126, 4649955, 4666784, 
  4683613, 4700442, 4717270, 4734099, 4750928, 4767757, 4784586, 4801415, 
  4818244, 4835073, 4851901, 4868730, 4885559, 4902388, 4919217, 4936046, 
  4952875, 4969704, 4986532, 5003361, 5020190, 5037019, 5053848, 5070677, 
  5087506, 5104335, 5121163, 5137992, 5154821, 5171650, 5188479, 5205308, 
  5222137, 5238966, 5255794, 5272623, 5289452, 5306281, 5323110, 5339939, 
};

static int g_to_y[256] = 
{
  0, 33039, 66077, 99116, 132155, 165193, 198232, 231270, 
  264309, 297348, 330386, 363425, 396464, 429502, 462541, 495579, 
  528618, 561657, 594695, 627734, 660773, 693811, 726850, 759888, 
  792927, 825966, 859004, 892043, 925082, 958120, 991159, 1024197, 
  1057236, 1090275, 1123313, 1156352, 1189391, 1222429, 1255468, 1288506, 
  1321545, 1354584, 1387622, 1420661, 1453700, 1486738, 1519777, 1552815, 
  1585854, 1618893, 1651931, 1684970, 1718009, 1751047, 1784086, 1817124, 
  1850163, 1883202, 1916240, 1949279, 1982318, 2015356, 2048395, 2081433, 
  2114472, 2147511, 2180549, 2213588, 2246627, 2279665, 2312704, 2345742, 
  2378781, 2411820, 2444858, 2477897, 2510936, 2543974, 2577013, 2610051, 
  2643090, 2676129, 2709167, 2742206, 2775245, 2808283, 2841322, 2874360, 
  2907399, 2940438, 2973476, 3006515, 3039554, 3072592, 3105631, 3138669, 
  3171708, 3204747, 3237785, 3270824, 3303863, 3336901, 3369940, 3402978, 
  3436017, 3469056, 3502094, 3535133, 3568172, 3601210, 3634249, 3667287, 
  3700326, 3733365, 3766403, 3799442, 3832481, 3865519, 3898558, 3931596, 
  3964635, 3997674, 4030712, 4063751, 4096790, 4129828, 4162867, 4195905, 
  4228944, 4261983, 4295021, 4328060, 4361099, 4394137, 4427176, 4460214, 
  4493253, 4526292, 4559330, 4592369, 4625408, 4658446, 4691485, 4724523, 
  4757562, 4790601, 4823639, 4856678, 4889717, 4922755, 4955794, 4988832, 
  5021871, 5054910, 5087948, 5120987, 5154026, 5187064, 5220103, 5253141, 
  5286180, 5319219, 5352257, 5385296, 5418335, 5451373, 5484412, 5517450, 
  5550489, 5583528, 5616566, 5649605, 5682644, 5715682, 5748721, 5781759, 
  5814798, 5847837, 5880875, 5913914, 5946953, 5979991, 6013030, 6046068, 
  6079107, 6112146, 6145184, 6178223, 6211262, 6244300, 6277339, 6310377, 
  6343416, 6376455, 6409493, 6442532, 6475571, 6508609, 6541648, 6574686, 
  6607725, 6640764, 6673802, 6706841, 6739880, 6772918, 6805957, 6838995, 
  6872034, 6905073, 6938111, 6971150, 7004189, 7037227, 7070266, 7103304, 
  7136343, 7169382, 7202420, 7235459, 7268498, 7301536, 7334575, 7367613, 
  7400652, 7433691, 7466729, 7499768, 7532807, 7565845, 7598884, 7631922, 
  7664961, 7698000, 7731038, 7764077, 7797116, 7830154, 7863193, 7896231, 
  7929270, 7962309, 7995347, 8028386, 8061425, 8094463, 8127502, 8160540, 
  8193579, 8226618, 8259656, 8292695, 8325734, 8358772, 8391811, 8424849, 
};

static int b_to_y[256] = 
{
  0, 6416, 12833, 19249, 25665, 32082, 38498, 44915, 
  51331, 57747, 64164, 70580, 76996, 83413, 89829, 96245, 
  102662, 109078, 115494, 121911, 128327, 134744, 141160, 147576, 
  153993, 160409, 166825, 173242, 179658, 186074, 192491, 198907, 
  205324, 211740, 218156, 224573, 230989, 237405, 243822, 250238, 
  256654, 263071, 269487, 275903, 282320, 288736, 295153, 301569, 
  307985, 314402, 320818, 327234, 333651, 340067, 346483, 352900, 
  359316, 365733, 372149, 378565, 384982, 391398, 397814, 404231, 
  410647, 417063, 423480, 429896, 436312, 442729, 449145, 455562, 
  461978, 468394, 474811, 481227, 487643, 494060, 500476, 506892, 
  513309, 519725, 526142, 532558, 538974, 545391, 551807, 558223, 
  564640, 571056, 577472, 583889, 590305, 596721, 603138, 609554, 
  615971, 622387, 628803, 635220, 641636, 648052, 654469, 660885,