302 lines
22 KiB
C++
302 lines
22 KiB
C++
/*
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* rgb2yuv.cpp
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*
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* Copyright (C) 2001 Matt Ownby
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*
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* This file is part of DAPHNE, a laserdisc arcade game emulator
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*
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* DAPHNE is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* DAPHNE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "rgb2yuv.h"
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// if we aren't using the assembly version, then use the C version instead
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#ifndef USE_MMX
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// these are int's so they are the optimal size for the CPU to work with
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unsigned int rgb2yuv_input[3] = { 0 }; // 8-bit values
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unsigned int rgb2yuv_result_y = 0; // 8-bit
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unsigned int rgb2yuv_result_u = 0; // 8-bit
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unsigned int rgb2yuv_result_v = 0; // 8-bit
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#define R rgb2yuv_input[0]
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#define G rgb2yuv_input[1]
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#define B rgb2yuv_input[2]
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#define Y rgb2yuv_result_y
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#define U rgb2yuv_result_u
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#define V rgb2yuv_result_v
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static const long mul_3736[256]={
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0, 3736, 7472, 11208, 14944, 18680, 22416, 26152,
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29888, 33624, 37360, 41096, 44832, 48568, 52304, 56040,
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59776, 63512, 67248, 70984, 74720, 78456, 82192, 85928,
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89664, 93400, 97136, 100872, 104608, 108344, 112080, 115816,
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119552, 123288, 127024, 130760, 134496, 138232, 141968, 145704,
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149440, 153176, 156912, 160648, 164384, 168120, 171856, 175592,
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179328, 183064, 186800, 190536, 194272, 198008, 201744, 205480,
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209216, 212952, 216688, 220424, 224160, 227896, 231632, 235368,
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239104, 242840, 246576, 250312, 254048, 257784, 261520, 265256,
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268992, 272728, 276464, 280200, 283936, 287672, 291408, 295144,
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298880, 302616, 306352, 310088, 313824, 317560, 321296, 325032,
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328768, 332504, 336240, 339976, 343712, 347448, 351184, 354920,
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358656, 362392, 366128, 369864, 373600, 377336, 381072, 384808,
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388544, 392280, 396016, 399752, 403488, 407224, 410960, 414696,
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418432, 422168, 425904, 429640, 433376, 437112, 440848, 444584,
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448320, 452056, 455792, 459528, 463264, 467000, 470736, 474472,
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478208, 481944, 485680, 489416, 493152, 496888, 500624, 504360,
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508096, 511832, 515568, 519304, 523040, 526776, 530512, 534248,
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537984, 541720, 545456, 549192, 552928, 556664, 560400, 564136,
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567872, 571608, 575344, 579080, 582816, 586552, 590288, 594024,
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597760, 601496, 605232, 608968, 612704, 616440, 620176, 623912,
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627648, 631384, 635120, 638856, 642592, 646328, 650064, 653800,
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657536, 661272, 665008, 668744, 672480, 676216, 679952, 683688,
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687424, 691160, 694896, 698632, 702368, 706104, 709840, 713576,
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717312, 721048, 724784, 728520, 732256, 735992, 739728, 743464,
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747200, 750936, 754672, 758408, 762144, 765880, 769616, 773352,
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777088, 780824, 784560, 788296, 792032, 795768, 799504, 803240,
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806976, 810712, 814448, 818184, 821920, 825656, 829392, 833128,
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836864, 840600, 844336, 848072, 851808, 855544, 859280, 863016,
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866752, 870488, 874224, 877960, 881696, 885432, 889168, 892904,
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896640, 900376, 904112, 907848, 911584, 915320, 919056, 922792,
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926528, 930264, 934000, 937736, 941472, 945208, 948944, 952680
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};
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static const long mul_9798[256]={
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0, 9798, 19596, 29394, 39192, 48990, 58788, 68586,
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78384, 88182, 97980, 107778, 117576, 127374, 137172, 146970,
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156768, 166566, 176364, 186162, 195960, 205758, 215556, 225354,
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235152, 244950, 254748, 264546, 274344, 284142, 293940, 303738,
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313536, 323334, 333132, 342930, 352728, 362526, 372324, 382122,
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391920, 401718, 411516, 421314, 431112, 440910, 450708, 460506,
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470304, 480102, 489900, 499698, 509496, 519294, 529092, 538890,
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548688, 558486, 568284, 578082, 587880, 597678, 607476, 617274,
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627072, 636870, 646668, 656466, 666264, 676062, 685860, 695658,
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705456, 715254, 725052, 734850, 744648, 754446, 764244, 774042,
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783840, 793638, 803436, 813234, 823032, 832830, 842628, 852426,
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862224, 872022, 881820, 891618, 901416, 911214, 921012, 930810,
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940608, 950406, 960204, 970002, 979800, 989598, 999396, 1009194,
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1018992, 1028790, 1038588, 1048386, 1058184, 1067982, 1077780, 1087578,
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1097376, 1107174, 1116972, 1126770, 1136568, 1146366, 1156164, 1165962,
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1175760, 1185558, 1195356, 1205154, 1214952, 1224750, 1234548, 1244346,
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1254144, 1263942, 1273740, 1283538, 1293336, 1303134, 1312932, 1322730,
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1332528, 1342326, 1352124, 1361922, 1371720, 1381518, 1391316, 1401114,
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1410912, 1420710, 1430508, 1440306, 1450104, 1459902, 1469700, 1479498,
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1489296, 1499094, 1508892, 1518690, 1528488, 1538286, 1548084, 1557882,
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1567680, 1577478, 1587276, 1597074, 1606872, 1616670, 1626468, 1636266,
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1646064, 1655862, 1665660, 1675458, 1685256, 1695054, 1704852, 1714650,
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1724448, 1734246, 1744044, 1753842, 1763640, 1773438, 1783236, 1793034,
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1802832, 1812630, 1822428, 1832226, 1842024, 1851822, 1861620, 1871418,
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1881216, 1891014, 1900812, 1910610, 1920408, 1930206, 1940004, 1949802,
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1959600, 1969398, 1979196, 1988994, 1998792, 2008590, 2018388, 2028186,
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2037984, 2047782, 2057580, 2067378, 2077176, 2086974, 2096772, 2106570,
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2116368, 2126166, 2135964, 2145762, 2155560, 2165358, 2175156, 2184954,
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2194752, 2204550, 2214348, 2224146, 2233944, 2243742, 2253540, 2263338,
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2273136, 2282934, 2292732, 2302530, 2312328, 2322126, 2331924, 2341722,
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2351520, 2361318, 2371116, 2380914, 2390712, 2400510, 2410308, 2420106,
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2429904, 2439702, 2449500, 2459298, 2469096, 2478894, 2488692, 2498490,
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};
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static const long mul_19235[256]={
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0, 19235, 38470, 57705, 76940, 96175, 115410, 134645,
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153880, 173115, 192350, 211585, 230820, 250055, 269290, 288525,
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307760, 326995, 346230, 365465, 384700, 403935, 423170, 442405,
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461640, 480875, 500110, 519345, 538580, 557815, 577050, 596285,
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615520, 634755, 653990, 673225, 692460, 711695, 730930, 750165,
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769400, 788635, 807870, 827105, 846340, 865575, 884810, 904045,
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923280, 942515, 961750, 980985, 1000220, 1019455, 1038690, 1057925,
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1077160, 1096395, 1115630, 1134865, 1154100, 1173335, 1192570, 1211805,
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1231040, 1250275, 1269510, 1288745, 1307980, 1327215, 1346450, 1365685,
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1384920, 1404155, 1423390, 1442625, 1461860, 1481095, 1500330, 1519565,
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1538800, 1558035, 1577270, 1596505, 1615740, 1634975, 1654210, 1673445,
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1692680, 1711915, 1731150, 1750385, 1769620, 1788855, 1808090, 1827325,
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1846560, 1865795, 1885030, 1904265, 1923500, 1942735, 1961970, 1981205,
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2000440, 2019675, 2038910, 2058145, 2077380, 2096615, 2115850, 2135085,
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2154320, 2173555, 2192790, 2212025, 2231260, 2250495, 2269730, 2288965,
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2308200, 2327435, 2346670, 2365905, 2385140, 2404375, 2423610, 2442845,
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2462080, 2481315, 2500550, 2519785, 2539020, 2558255, 2577490, 2596725,
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2615960, 2635195, 2654430, 2673665, 2692900, 2712135, 2731370, 2750605,
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2769840, 2789075, 2808310, 2827545, 2846780, 2866015, 2885250, 2904485,
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2923720, 2942955, 2962190, 2981425, 3000660, 3019895, 3039130, 3058365,
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3077600, 3096835, 3116070, 3135305, 3154540, 3173775, 3193010, 3212245,
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3231480, 3250715, 3269950, 3289185, 3308420, 3327655, 3346890, 3366125,
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3385360, 3404595, 3423830, 3443065, 3462300, 3481535, 3500770, 3520005,
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3539240, 3558475, 3577710, 3596945, 3616180, 3635415, 3654650, 3673885,
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3693120, 3712355, 3731590, 3750825, 3770060, 3789295, 3808530, 3827765,
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3847000, 3866235, 3885470, 3904705, 3923940, 3943175, 3962410, 3981645,
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4000880, 4020115, 4039350, 4058585, 4077820, 4097055, 4116290, 4135525,
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4154760, 4173995, 4193230, 4212465, 4231700, 4250935, 4270170, 4289405,
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4308640, 4327875, 4347110, 4366345, 4385580, 4404815, 4424050, 4443285,
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4462520, 4481755, 4500990, 4520225, 4539460, 4558695, 4577930, 4597165,
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4616400, 4635635, 4654870, 4674105, 4693340, 4712575, 4731810, 4751045,
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4770280, 4789515, 4808750, 4827985, 4847220, 4866455, 4885690, 4904925,
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};
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static const long mul_18514[512]={
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-4739584, -4721070, -4702556, -4684042, -4665528, -4647014, -4628500, -4609986,
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-4591472, -4572958, -4554444, -4535930, -4517416, -4498902, -4480388, -4461874,
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-4443360, -4424846, -4406332, -4387818, -4369304, -4350790, -4332276, -4313762,
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-4295248, -4276734, -4258220, -4239706, -4221192, -4202678, -4184164, -4165650,
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-4147136, -4128622, -4110108, -4091594, -4073080, -4054566, -4036052, -4017538,
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-3999024, -3980510, -3961996, -3943482, -3924968, -3906454, -3887940, -3869426,
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-3850912, -3832398, -3813884, -3795370, -3776856, -3758342, -3739828, -3721314,
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-3702800, -3684286, -3665772, -3647258, -3628744, -3610230, -3591716, -3573202,
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-3554688, -3536174, -3517660, -3499146, -3480632, -3462118, -3443604, -3425090,
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-3406576, -3388062, -3369548, -3351034, -3332520, -3314006, -3295492, -3276978,
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-3258464, -3239950, -3221436, -3202922, -3184408, -3165894, -3147380, -3128866,
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-3110352, -3091838, -3073324, -3054810, -3036296, -3017782, -2999268, -2980754,
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-2962240, -2943726, -2925212, -2906698, -2888184, -2869670, -2851156, -2832642,
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-2814128, -2795614, -2777100, -2758586, -2740072, -2721558, -2703044, -2684530,
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-2666016, -2647502, -2628988, -2610474, -2591960, -2573446, -2554932, -2536418,
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-2517904, -2499390, -2480876, -2462362, -2443848, -2425334, -2406820, -2388306,
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-2369792, -2351278, -2332764, -2314250, -2295736, -2277222, -2258708, -2240194,
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-2221680, -2203166, -2184652, -2166138, -2147624, -2129110, -2110596, -2092082,
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-2073568, -2055054, -2036540, -2018026, -1999512, -1980998, -1962484, -1943970,
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-1925456, -1906942, -1888428, -1869914, -1851400, -1832886, -1814372, -1795858,
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-1777344, -1758830, -1740316, -1721802, -1703288, -1684774, -1666260, -1647746,
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-1629232, -1610718, -1592204, -1573690, -1555176, -1536662, -1518148, -1499634,
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-1481120, -1462606, -1444092, -1425578, -1407064, -1388550, -1370036, -1351522,
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-1333008, -1314494, -1295980, -1277466, -1258952, -1240438, -1221924, -1203410,
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-1184896, -1166382, -1147868, -1129354, -1110840, -1092326, -1073812, -1055298,
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-1036784, -1018270, -999756, -981242, -962728, -944214, -925700, -907186,
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-888672, -870158, -851644, -833130, -814616, -796102, -777588, -759074,
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-740560, -722046, -703532, -685018, -666504, -647990, -629476, -610962,
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-592448, -573934, -555420, -536906, -518392, -499878, -481364, -462850,
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-444336, -425822, -407308, -388794, -370280, -351766, -333252, -314738,
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-296224, -277710, -259196, -240682, -222168, -203654, -185140, -166626,
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-148112, -129598, -111084, -92570, -74056, -55542, -37028, -18514,
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0, 18514, 37028, 55542, 74056, 92570, 111084, 129598,
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148112, 166626, 185140, 203654, 222168, 240682, 259196, 277710,
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296224, 314738, 333252, 351766, 370280, 388794, 407308, 425822,
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444336, 462850, 481364, 499878, 518392, 536906, 555420, 573934,
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592448, 610962, 629476, 647990, 666504, 685018, 703532, 722046,
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740560, 759074, 777588, 796102, 814616, 833130, 851644, 870158,
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888672, 907186, 925700, 944214, 962728, 981242, 999756, 1018270,
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1036784, 1055298, 1073812, 1092326, 1110840, 1129354, 1147868, 1166382,
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1184896, 1203410, 1221924, 1240438, 1258952, 1277466, 1295980, 1314494,
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1333008, 1351522, 1370036, 1388550, 1407064, 1425578, 1444092, 1462606,
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1481120, 1499634, 1518148, 1536662, 1555176, 1573690, 1592204, 1610718,
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1629232, 1647746, 1666260, 1684774, 1703288, 1721802, 1740316, 1758830,
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1777344, 1795858, 1814372, 1832886, 1851400, 1869914, 1888428, 1906942,
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1925456, 1943970, 1962484, 1980998, 1999512, 2018026, 2036540, 2055054,
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2073568, 2092082, 2110596, 2129110, 2147624, 2166138, 2184652, 2203166,
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2221680, 2240194, 2258708, 2277222, 2295736, 2314250, 2332764, 2351278,
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2369792, 2388306, 2406820, 2425334, 2443848, 2462362, 2480876, 2499390,
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2517904, 2536418, 2554932, 2573446, 2591960, 2610474, 2628988, 2647502,
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2666016, 2684530, 2703044, 2721558, 2740072, 2758586, 2777100, 2795614,
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2814128, 2832642, 2851156, 2869670, 2888184, 2906698, 2925212, 2943726,
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2962240, 2980754, 2999268, 3017782, 3036296, 3054810, 3073324, 3091838,
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3110352, 3128866, 3147380, 3165894, 3184408, 3202922, 3221436, 3239950,
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3258464, 3276978, 3295492, 3314006, 3332520, 3351034, 3369548, 3388062,
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3406576, 3425090, 3443604, 3462118, 3480632, 3499146, 3517660, 3536174,
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3554688, 3573202, 3591716, 3610230, 3628744, 3647258, 3665772, 3684286,
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3702800, 3721314, 3739828, 3758342, 3776856, 3795370, 3813884, 3832398,
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3850912, 3869426, 3887940, 3906454, 3924968, 3943482, 3961996, 3980510,
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3999024, 4017538, 4036052, 4054566, 4073080, 4091594, 4110108, 4128622,
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4147136, 4165650, 4184164, 4202678, 4221192, 4239706, 4258220, 4276734,
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4295248, 4313762, 4332276, 4350790, 4369304, 4387818, 4406332, 4424846,
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4443360, 4461874, 4480388, 4498902, 4517416, 4535930, 4554444, 4572958,
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4591472, 4609986, 4628500, 4647014, 4665528, 4684042, 4702556, 4721070
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};
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static const long mul_23364[512]={
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-5981184, -5957820, -5934456, -5911092, -5887728, -5864364, -5841000, -5817636,
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-5794272, -5770908, -5747544, -5724180, -5700816, -5677452, -5654088, -5630724,
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-5607360, -5583996, -5560632, -5537268, -5513904, -5490540, -5467176, -5443812,
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-5420448, -5397084, -5373720, -5350356, -5326992, -5303628, -5280264, -5256900,
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-5233536, -5210172, -5186808, -5163444, -5140080, -5116716, -5093352, -5069988,
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-5046624, -5023260, -4999896, -4976532, -4953168, -4929804, -4906440, -4883076,
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-4859712, -4836348, -4812984, -4789620, -4766256, -4742892, -4719528, -4696164,
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-4672800, -4649436, -4626072, -4602708, -4579344, -4555980, -4532616, -4509252,
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-4485888, -4462524, -4439160, -4415796, -4392432, -4369068, -4345704, -4322340,
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-4298976, -4275612, -4252248, -4228884, -4205520, -4182156, -4158792, -4135428,
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-4112064, -4088700, -4065336, -4041972, -4018608, -3995244, -3971880, -3948516,
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-3925152, -3901788, -3878424, -3855060, -3831696, -3808332, -3784968, -3761604,
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-3738240, -3714876, -3691512, -3668148, -3644784, -3621420, -3598056, -3574692,
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-3551328, -3527964, -3504600, -3481236, -3457872, -3434508, -3411144, -3387780,
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-3364416, -3341052, -3317688, -3294324, -3270960, -3247596, -3224232, -3200868,
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-3177504, -3154140, -3130776, -3107412, -3084048, -3060684, -3037320, -3013956,
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-2990592, -2967228, -2943864, -2920500, -2897136, -2873772, -2850408, -2827044,
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-2803680, -2780316, -2756952, -2733588, -2710224, -2686860, -2663496, -2640132,
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|
-2616768, -2593404, -2570040, -2546676, -2523312, -2499948, -2476584, -2453220,
|
|
-2429856, -2406492, -2383128, -2359764, -2336400, -2313036, -2289672, -2266308,
|
|
-2242944, -2219580, -2196216, -2172852, -2149488, -2126124, -2102760, -2079396,
|
|
-2056032, -2032668, -2009304, -1985940, -1962576, -1939212, -1915848, -1892484,
|
|
-1869120, -1845756, -1822392, -1799028, -1775664, -1752300, -1728936, -1705572,
|
|
-1682208, -1658844, -1635480, -1612116, -1588752, -1565388, -1542024, -1518660,
|
|
-1495296, -1471932, -1448568, -1425204, -1401840, -1378476, -1355112, -1331748,
|
|
-1308384, -1285020, -1261656, -1238292, -1214928, -1191564, -1168200, -1144836,
|
|
-1121472, -1098108, -1074744, -1051380, -1028016, -1004652, -981288, -957924,
|
|
-934560, -911196, -887832, -864468, -841104, -817740, -794376, -771012,
|
|
-747648, -724284, -700920, -677556, -654192, -630828, -607464, -584100,
|
|
-560736, -537372, -514008, -490644, -467280, -443916, -420552, -397188,
|
|
-373824, -350460, -327096, -303732, -280368, -257004, -233640, -210276,
|
|
-186912, -163548, -140184, -116820, -93456, -70092, -46728, -23364,
|
|
0, 23364, 46728, 70092, 93456, 116820, 140184, 163548,
|
|
186912, 210276, 233640, 257004, 280368, 303732, 327096, 350460,
|
|
373824, 397188, 420552, 443916, 467280, 490644, 514008, 537372,
|
|
560736, 584100, 607464, 630828, 654192, 677556, 700920, 724284,
|
|
747648, 771012, 794376, 817740, 841104, 864468, 887832, 911196,
|
|
934560, 957924, 981288, 1004652, 1028016, 1051380, 1074744, 1098108,
|
|
1121472, 1144836, 1168200, 1191564, 1214928, 1238292, 1261656, 1285020,
|
|
1308384, 1331748, 1355112, 1378476, 1401840, 1425204, 1448568, 1471932,
|
|
1495296, 1518660, 1542024, 1565388, 1588752, 1612116, 1635480, 1658844,
|
|
1682208, 1705572, 1728936, 1752300, 1775664, 1799028, 1822392, 1845756,
|
|
1869120, 1892484, 1915848, 1939212, 1962576, 1985940, 2009304, 2032668,
|
|
2056032, 2079396, 2102760, 2126124, 2149488, 2172852, 2196216, 2219580,
|
|
2242944, 2266308, 2289672, 2313036, 2336400, 2359764, 2383128, 2406492,
|
|
2429856, 2453220, 2476584, 2499948, 2523312, 2546676, 2570040, 2593404,
|
|
2616768, 2640132, 2663496, 2686860, 2710224, 2733588, 2756952, 2780316,
|
|
2803680, 2827044, 2850408, 2873772, 2897136, 2920500, 2943864, 2967228,
|
|
2990592, 3013956, 3037320, 3060684, 3084048, 3107412, 3130776, 3154140,
|
|
3177504, 3200868, 3224232, 3247596, 3270960, 3294324, 3317688, 3341052,
|
|
3364416, 3387780, 3411144, 3434508, 3457872, 3481236, 3504600, 3527964,
|
|
3551328, 3574692, 3598056, 3621420, 3644784, 3668148, 3691512, 3714876,
|
|
3738240, 3761604, 3784968, 3808332, 3831696, 3855060, 3878424, 3901788,
|
|
3925152, 3948516, 3971880, 3995244, 4018608, 4041972, 4065336, 4088700,
|
|
4112064, 4135428, 4158792, 4182156, 4205520, 4228884, 4252248, 4275612,
|
|
4298976, 4322340, 4345704, 4369068, 4392432, 4415796, 4439160, 4462524,
|
|
4485888, 4509252, 4532616, 4555980, 4579344, 4602708, 4626072, 4649436,
|
|
4672800, 4696164, 4719528, 4742892, 4766256, 4789620, 4812984, 4836348,
|
|
4859712, 4883076, 4906440, 4929804, 4953168, 4976532, 4999896, 5023260,
|
|
5046624, 5069988, 5093352, 5116716, 5140080, 5163444, 5186808, 5210172,
|
|
5233536, 5256900, 5280264, 5303628, 5326992, 5350356, 5373720, 5397084,
|
|
5420448, 5443812, 5467176, 5490540, 5513904, 5537268, 5560632, 5583996,
|
|
5607360, 5630724, 5654088, 5677452, 5700816, 5724180, 5747544, 5770908,
|
|
5794272, 5817636, 5841000, 5864364, 5887728, 5911092, 5934456, 5957820
|
|
};
|
|
|
|
// Function contributed by 'Buddabing'
|
|
void rgb2yuv()
|
|
{
|
|
Y = ((mul_9798[R]+mul_19235[G]+mul_3736[B])>>15);
|
|
U = ((mul_18514[B-Y+256]>>15)+128);
|
|
V = ((mul_23364[R-Y+256]>>15)+128);
|
|
}
|
|
|
|
|
|
/*
|
|
// a faster, less accurate version of the RGB->YUV conversion formula
|
|
// (faster because no floating point is used)
|
|
void rgb2yuv()
|
|
{
|
|
rgb2yuv_result_y = (unsigned char) (((9798*R) + (19235*G) + (3736*B)) >> 15);
|
|
rgb2yuv_result_u = (unsigned char) ((((B-rgb2yuv_result_y)*18514) >> 15) + 128);
|
|
rgb2yuv_result_v = (unsigned char) ((((R-rgb2yuv_result_y)*23364) >> 15) + 128);
|
|
}
|
|
*/
|
|
|
|
#endif // not MMX_RGB2YUV
|