diff --git a/libavcodec/mace.c b/libavcodec/mace.c index 1c9631d6b9..dc98f2b510 100644 --- a/libavcodec/mace.c +++ b/libavcodec/mace.c @@ -36,202 +36,106 @@ static const uint16_t MACEtab1[] = { 0xfff3, 0x0008, 0x004c, 0x00de, 0x00de, 0x0 static const uint16_t MACEtab3[] = { 0xffee, 0x008c, 0x008c, 0xffee }; -static const int16_t MACEtab2[][8] = { - { 37, 116, 206, 330, -331, -207, -117, -38}, - { 39, 121, 216, 346, -347, -217, -122, -40}, - { 41, 127, 225, 361, -362, -226, -128, -42}, - { 42, 132, 235, 377, -378, -236, -133, -43}, - { 44, 137, 245, 392, -393, -246, -138, -45}, - { 46, 144, 256, 410, -411, -257, -145, -47}, - { 48, 150, 267, 428, -429, -268, -151, -49}, - { 51, 157, 280, 449, -450, -281, -158, -52}, - { 53, 165, 293, 470, -471, -294, -166, -54}, - { 55, 172, 306, 490, -491, -307, -173, -56}, - { 58, 179, 319, 511, -512, -320, -180, -59}, - { 60, 187, 333, 534, -535, -334, -188, -61}, - { 63, 195, 348, 557, -558, -349, -196, -64}, - { 66, 205, 364, 583, -584, -365, -206, -67}, - { 69, 214, 380, 609, -610, -381, -215, -70}, - { 72, 223, 396, 635, -636, -397, -224, -73}, - { 75, 233, 414, 663, -664, -415, -234, -76}, - { 79, 244, 433, 694, -695, -434, -245, -80}, - { 82, 254, 453, 725, -726, -454, -255, -83}, - { 86, 265, 472, 756, -757, -473, -266, -87}, - { 90, 278, 495, 792, -793, -496, -279, -91}, - { 94, 290, 516, 826, -827, -517, -291, -95}, - { 98, 303, 538, 862, -863, -539, -304, -99}, - { 102, 316, 562, 901, -902, -563, -317, -103}, - { 107, 331, 588, 942, -943, -589, -332, -108}, - { 112, 345, 614, 983, -984, -615, -346, -113}, - { 117, 361, 641, 1027, -1028, -642, -362, -118}, - { 122, 377, 670, 1074, -1075, -671, -378, -123}, - { 127, 394, 701, 1123, -1124, -702, -395, -128}, - { 133, 411, 732, 1172, -1173, -733, -412, -134}, - { 139, 430, 764, 1224, -1225, -765, -431, -140}, - { 145, 449, 799, 1280, -1281, -800, -450, -146}, - { 152, 469, 835, 1337, -1338, -836, -470, -153}, - { 159, 490, 872, 1397, -1398, -873, -491, -160}, - { 166, 512, 911, 1459, -1460, -912, -513, -167}, - { 173, 535, 951, 1523, -1524, -952, -536, -174}, - { 181, 558, 993, 1590, -1591, -994, -559, -182}, - { 189, 584, 1038, 1663, -1664, -1039, -585, -190}, - { 197, 610, 1085, 1738, -1739, -1086, -611, -198}, - { 206, 637, 1133, 1815, -1816, -1134, -638, -207}, - { 215, 665, 1183, 1895, -1896, -1184, -666, -216}, - { 225, 695, 1237, 1980, -1981, -1238, -696, -226}, - { 235, 726, 1291, 2068, -2069, -1292, -727, -236}, - { 246, 759, 1349, 2161, -2162, -1350, -760, -247}, - { 257, 792, 1409, 2257, -2258, -1410, -793, -258}, - { 268, 828, 1472, 2357, -2358, -1473, -829, -269}, - { 280, 865, 1538, 2463, -2464, -1539, -866, -281}, - { 293, 903, 1606, 2572, -2573, -1607, -904, -294}, - { 306, 944, 1678, 2688, -2689, -1679, -945, -307}, - { 319, 986, 1753, 2807, -2808, -1754, -987, -320}, - { 334, 1030, 1832, 2933, -2934, -1833, -1031, -335}, - { 349, 1076, 1914, 3065, -3066, -1915, -1077, -350}, - { 364, 1124, 1999, 3202, -3203, -2000, -1125, -365}, - { 380, 1174, 2088, 3344, -3345, -2089, -1175, -381}, - { 398, 1227, 2182, 3494, -3495, -2183, -1228, -399}, - { 415, 1281, 2278, 3649, -3650, -2279, -1282, -416}, - { 434, 1339, 2380, 3811, -3812, -2381, -1340, -435}, - { 453, 1398, 2486, 3982, -3983, -2487, -1399, -454}, - { 473, 1461, 2598, 4160, -4161, -2599, -1462, -474}, - { 495, 1526, 2714, 4346, -4347, -2715, -1527, -496}, - { 517, 1594, 2835, 4540, -4541, -2836, -1595, -518}, - { 540, 1665, 2961, 4741, -4742, -2962, -1666, -541}, - { 564, 1740, 3093, 4953, -4954, -3094, -1741, -565}, - { 589, 1818, 3232, 5175, -5176, -3233, -1819, -590}, - { 615, 1898, 3375, 5405, -5406, -3376, -1899, -616}, - { 643, 1984, 3527, 5647, -5648, -3528, -1985, -644}, - { 671, 2072, 3683, 5898, -5899, -3684, -2073, -672}, - { 701, 2164, 3848, 6161, -6162, -3849, -2165, -702}, - { 733, 2261, 4020, 6438, -6439, -4021, -2262, -734}, - { 766, 2362, 4199, 6724, -6725, -4200, -2363, -767}, - { 800, 2467, 4386, 7024, -7025, -4387, -2468, -801}, - { 836, 2578, 4583, 7339, -7340, -4584, -2579, -837}, - { 873, 2692, 4786, 7664, -7665, -4787, -2693, -874}, - { 912, 2813, 5001, 8008, -8009, -5002, -2814, -913}, - { 952, 2938, 5223, 8364, -8365, -5224, -2939, -953}, - { 995, 3070, 5457, 8739, -8740, -5458, -3071, -996}, - { 1039, 3207, 5701, 9129, -9130, -5702, -3208, -1040}, - { 1086, 3350, 5956, 9537, -9538, -5957, -3351, -1087}, - { 1134, 3499, 6220, 9960, -9961, -6221, -3500, -1135}, - { 1185, 3655, 6497, 10404, -10405, -6498, -3656, -1186}, - { 1238, 3818, 6788, 10869, -10870, -6789, -3819, -1239}, - { 1293, 3989, 7091, 11355, -11356, -7092, -3990, -1294}, - { 1351, 4166, 7407, 11861, -11862, -7408, -4167, -1352}, - { 1411, 4352, 7738, 12390, -12391, -7739, -4353, -1412}, - { 1474, 4547, 8084, 12946, -12947, -8085, -4548, -1475}, - { 1540, 4750, 8444, 13522, -13523, -8445, -4751, -1541}, - { 1609, 4962, 8821, 14126, -14127, -8822, -4963, -1610}, - { 1680, 5183, 9215, 14756, -14757, -9216, -5184, -1681}, - { 1756, 5415, 9626, 15415, -15416, -9627, -5416, -1757}, - { 1834, 5657, 10057, 16104, -16105, -10058, -5658, -1835}, - { 1916, 5909, 10505, 16822, -16823, -10506, -5910, -1917}, - { 2001, 6173, 10975, 17574, -17575, -10976, -6174, -2002}, - { 2091, 6448, 11463, 18356, -18357, -11464, -6449, -2092}, - { 2184, 6736, 11974, 19175, -19176, -11975, -6737, -2185}, - { 2282, 7037, 12510, 20032, -20033, -12511, -7038, -2283}, - { 2383, 7351, 13068, 20926, -20927, -13069, -7352, -2384}, - { 2490, 7679, 13652, 21861, -21862, -13653, -7680, -2491}, - { 2601, 8021, 14260, 22834, -22835, -14261, -8022, -2602}, - { 2717, 8380, 14897, 23854, -23855, -14898, -8381, -2718}, - { 2838, 8753, 15561, 24918, -24919, -15562, -8754, -2839}, - { 2965, 9144, 16256, 26031, -26032, -16257, -9145, -2966}, - { 3097, 9553, 16982, 27193, -27194, -16983, -9554, -3098}, - { 3236, 9979, 17740, 28407, -28408, -17741, -9980, -3237}, - { 3380, 10424, 18532, 29675, -29676, -18533, -10425, -3381}, - { 3531, 10890, 19359, 31000, -31001, -19360, -10891, -3532}, - { 3688, 11375, 20222, 32382, -32383, -20223, -11376, -3689}, - { 3853, 11883, 21125, 32767, -32768, -21126, -11884, -3854}, - { 4025, 12414, 22069, 32767, -32768, -22070, -12415, -4026}, - { 4205, 12967, 23053, 32767, -32768, -23054, -12968, -4206}, - { 4392, 13546, 24082, 32767, -32768, -24083, -13547, -4393}, - { 4589, 14151, 25157, 32767, -32768, -25158, -14152, -4590}, - { 4793, 14783, 26280, 32767, -32768, -26281, -14784, -4794}, - { 5007, 15442, 27452, 32767, -32768, -27453, -15443, -5008}, - { 5231, 16132, 28678, 32767, -32768, -28679, -16133, -5232}, - { 5464, 16851, 29957, 32767, -32768, -29958, -16852, -5465}, - { 5708, 17603, 31294, 32767, -32768, -31295, -17604, -5709}, - { 5963, 18389, 32691, 32767, -32768, -32692, -18390, -5964}, - { 6229, 19210, 32767, 32767, -32768, -32768, -19211, -6230}, - { 6507, 20067, 32767, 32767, -32768, -32768, -20068, -6508}, - { 6797, 20963, 32767, 32767, -32768, -32768, -20964, -6798}, - { 7101, 21899, 32767, 32767, -32768, -32768, -21900, -7102}, - { 7418, 22876, 32767, 32767, -32768, -32768, -22877, -7419}, - { 7749, 23897, 32767, 32767, -32768, -32768, -23898, -7750}, - { 8095, 24964, 32767, 32767, -32768, -32768, -24965, -8096}, - { 8456, 26078, 32767, 32767, -32768, -32768, -26079, -8457}, - { 8833, 27242, 32767, 32767, -32768, -32768, -27243, -8834}, - { 9228, 28457, 32767, 32767, -32768, -32768, -28458, -9229}, - { 9639, 29727, 32767, 32767, -32768, -32768, -29728, -9640} +static const int16_t MACEtab2[][4] = { + { 37, 116, 206, 330}, { 39, 121, 216, 346}, + { 41, 127, 225, 361}, { 42, 132, 235, 377}, + { 44, 137, 245, 392}, { 46, 144, 256, 410}, + { 48, 150, 267, 428}, { 51, 157, 280, 449}, + { 53, 165, 293, 470}, { 55, 172, 306, 490}, + { 58, 179, 319, 511}, { 60, 187, 333, 534}, + { 63, 195, 348, 557}, { 66, 205, 364, 583}, + { 69, 214, 380, 609}, { 72, 223, 396, 635}, + { 75, 233, 414, 663}, { 79, 244, 433, 694}, + { 82, 254, 453, 725}, { 86, 265, 472, 756}, + { 90, 278, 495, 792}, { 94, 290, 516, 826}, + { 98, 303, 538, 862}, { 102, 316, 562, 901}, + { 107, 331, 588, 942}, { 112, 345, 614, 983}, + { 117, 361, 641, 1027}, { 122, 377, 670, 1074}, + { 127, 394, 701, 1123}, { 133, 411, 732, 1172}, + { 139, 430, 764, 1224}, { 145, 449, 799, 1280}, + { 152, 469, 835, 1337}, { 159, 490, 872, 1397}, + { 166, 512, 911, 1459}, { 173, 535, 951, 1523}, + { 181, 558, 993, 1590}, { 189, 584, 1038, 1663}, + { 197, 610, 1085, 1738}, { 206, 637, 1133, 1815}, + { 215, 665, 1183, 1895}, { 225, 695, 1237, 1980}, + { 235, 726, 1291, 2068}, { 246, 759, 1349, 2161}, + { 257, 792, 1409, 2257}, { 268, 828, 1472, 2357}, + { 280, 865, 1538, 2463}, { 293, 903, 1606, 2572}, + { 306, 944, 1678, 2688}, { 319, 986, 1753, 2807}, + { 334, 1030, 1832, 2933}, { 349, 1076, 1914, 3065}, + { 364, 1124, 1999, 3202}, { 380, 1174, 2088, 3344}, + { 398, 1227, 2182, 3494}, { 415, 1281, 2278, 3649}, + { 434, 1339, 2380, 3811}, { 453, 1398, 2486, 3982}, + { 473, 1461, 2598, 4160}, { 495, 1526, 2714, 4346}, + { 517, 1594, 2835, 4540}, { 540, 1665, 2961, 4741}, + { 564, 1740, 3093, 4953}, { 589, 1818, 3232, 5175}, + { 615, 1898, 3375, 5405}, { 643, 1984, 3527, 5647}, + { 671, 2072, 3683, 5898}, { 701, 2164, 3848, 6161}, + { 733, 2261, 4020, 6438}, { 766, 2362, 4199, 6724}, + { 800, 2467, 4386, 7024}, { 836, 2578, 4583, 7339}, + { 873, 2692, 4786, 7664}, { 912, 2813, 5001, 8008}, + { 952, 2938, 5223, 8364}, { 995, 3070, 5457, 8739}, + { 1039, 3207, 5701, 9129}, { 1086, 3350, 5956, 9537}, + { 1134, 3499, 6220, 9960}, { 1185, 3655, 6497, 10404}, + { 1238, 3818, 6788, 10869}, { 1293, 3989, 7091, 11355}, + { 1351, 4166, 7407, 11861}, { 1411, 4352, 7738, 12390}, + { 1474, 4547, 8084, 12946}, { 1540, 4750, 8444, 13522}, + { 1609, 4962, 8821, 14126}, { 1680, 5183, 9215, 14756}, + { 1756, 5415, 9626, 15415}, { 1834, 5657, 10057, 16104}, + { 1916, 5909, 10505, 16822}, { 2001, 6173, 10975, 17574}, + { 2091, 6448, 11463, 18356}, { 2184, 6736, 11974, 19175}, + { 2282, 7037, 12510, 20032}, { 2383, 7351, 13068, 20926}, + { 2490, 7679, 13652, 21861}, { 2601, 8021, 14260, 22834}, + { 2717, 8380, 14897, 23854}, { 2838, 8753, 15561, 24918}, + { 2965, 9144, 16256, 26031}, { 3097, 9553, 16982, 27193}, + { 3236, 9979, 17740, 28407}, { 3380, 10424, 18532, 29675}, + { 3531, 10890, 19359, 31000}, { 3688, 11375, 20222, 32382}, + { 3853, 11883, 21125, 32767}, { 4025, 12414, 22069, 32767}, + { 4205, 12967, 23053, 32767}, { 4392, 13546, 24082, 32767}, + { 4589, 14151, 25157, 32767}, { 4793, 14783, 26280, 32767}, + { 5007, 15442, 27452, 32767}, { 5231, 16132, 28678, 32767}, + { 5464, 16851, 29957, 32767}, { 5708, 17603, 31294, 32767}, + { 5963, 18389, 32691, 32767}, { 6229, 19210, 32767, 32767}, + { 6507, 20067, 32767, 32767}, { 6797, 20963, 32767, 32767}, + { 7101, 21899, 32767, 32767}, { 7418, 22876, 32767, 32767}, + { 7749, 23897, 32767, 32767}, { 8095, 24964, 32767, 32767}, + { 8456, 26078, 32767, 32767}, { 8833, 27242, 32767, 32767}, + { 9228, 28457, 32767, 32767}, { 9639, 29727, 32767, 32767} }; -static const int16_t MACEtab4[][4] = { - { 64, 216, -217, -65}, { 67, 226, -227, -68}, - { 70, 236, -237, -71}, { 74, 246, -247, -75}, - { 77, 257, -258, -78}, { 80, 268, -269, -81}, - { 84, 280, -281, -85}, { 88, 294, -295, -89}, - { 92, 307, -308, -93}, { 96, 321, -322, -97}, - { 100, 334, -335, -101}, { 104, 350, -351, -105}, - { 109, 365, -366, -110}, { 114, 382, -383, -115}, - { 119, 399, -400, -120}, { 124, 416, -417, -125}, - { 130, 434, -435, -131}, { 136, 454, -455, -137}, - { 142, 475, -476, -143}, { 148, 495, -496, -149}, - { 155, 519, -520, -156}, { 162, 541, -542, -163}, - { 169, 564, -565, -170}, { 176, 590, -591, -177}, - { 185, 617, -618, -186}, { 193, 644, -645, -194}, - { 201, 673, -674, -202}, { 210, 703, -704, -211}, - { 220, 735, -736, -221}, { 230, 767, -768, -231}, - { 240, 801, -802, -241}, { 251, 838, -839, -252}, - { 262, 876, -877, -263}, { 274, 914, -915, -275}, - { 286, 955, -956, -287}, { 299, 997, -998, -300}, - { 312, 1041, -1042, -313}, { 326, 1089, -1090, -327}, - { 341, 1138, -1139, -342}, { 356, 1188, -1189, -357}, - { 372, 1241, -1242, -373}, { 388, 1297, -1298, -389}, - { 406, 1354, -1355, -407}, { 424, 1415, -1416, -425}, - { 443, 1478, -1479, -444}, { 462, 1544, -1545, -463}, - { 483, 1613, -1614, -484}, { 505, 1684, -1685, -506}, - { 527, 1760, -1761, -528}, { 551, 1838, -1839, -552}, - { 576, 1921, -1922, -577}, { 601, 2007, -2008, -602}, - { 628, 2097, -2098, -629}, { 656, 2190, -2191, -657}, - { 686, 2288, -2289, -687}, { 716, 2389, -2390, -717}, - { 748, 2496, -2497, -749}, { 781, 2607, -2608, -782}, - { 816, 2724, -2725, -817}, { 853, 2846, -2847, -854}, - { 891, 2973, -2974, -892}, { 930, 3104, -3105, -931}, - { 972, 3243, -3244, -973}, { 1016, 3389, -3390, -1017}, - { 1061, 3539, -3540, -1062}, { 1108, 3698, -3699, -1109}, - { 1158, 3862, -3863, -1159}, { 1209, 4035, -4036, -1210}, - { 1264, 4216, -4217, -1265}, { 1320, 4403, -4404, -1321}, - { 1379, 4599, -4600, -1380}, { 1441, 4806, -4807, -1442}, - { 1505, 5019, -5020, -1506}, { 1572, 5244, -5245, -1573}, - { 1642, 5477, -5478, -1643}, { 1715, 5722, -5723, -1716}, - { 1792, 5978, -5979, -1793}, { 1872, 6245, -6246, -1873}, - { 1955, 6522, -6523, -1956}, { 2043, 6813, -6814, -2044}, - { 2134, 7118, -7119, -2135}, { 2229, 7436, -7437, -2230}, - { 2329, 7767, -7768, -2330}, { 2432, 8114, -8115, -2433}, - { 2541, 8477, -8478, -2542}, { 2655, 8854, -8855, -2656}, - { 2773, 9250, -9251, -2774}, { 2897, 9663, -9664, -2898}, - { 3026, 10094, -10095, -3027}, { 3162, 10546, -10547, -3163}, - { 3303, 11016, -11017, -3304}, { 3450, 11508, -11509, -3451}, - { 3604, 12020, -12021, -3605}, { 3765, 12556, -12557, -3766}, - { 3933, 13118, -13119, -3934}, { 4108, 13703, -13704, -4109}, - { 4292, 14315, -14316, -4293}, { 4483, 14953, -14954, -4484}, - { 4683, 15621, -15622, -4684}, { 4892, 16318, -16319, -4893}, - { 5111, 17046, -17047, -5112}, { 5339, 17807, -17808, -5340}, - { 5577, 18602, -18603, -5578}, { 5826, 19433, -19434, -5827}, - { 6086, 20300, -20301, -6087}, { 6358, 21205, -21206, -6359}, - { 6642, 22152, -22153, -6643}, { 6938, 23141, -23142, -6939}, - { 7248, 24173, -24174, -7249}, { 7571, 25252, -25253, -7572}, - { 7909, 26380, -26381, -7910}, { 8262, 27557, -27558, -8263}, - { 8631, 28786, -28787, -8632}, { 9016, 30072, -30073, -9017}, - { 9419, 31413, -31414, -9420}, { 9839, 32767, -32768, -9840}, - { 10278, 32767, -32768, -10279}, { 10737, 32767, -32768, -10738}, - { 11216, 32767, -32768, -11217}, { 11717, 32767, -32768, -11718}, - { 12240, 32767, -32768, -12241}, { 12786, 32767, -32768, -12787}, - { 13356, 32767, -32768, -13357}, { 13953, 32767, -32768, -13954}, - { 14576, 32767, -32768, -14577}, { 15226, 32767, -32768, -15227}, - { 15906, 32767, -32768, -15907}, { 16615, 32767, -32768, -16616} +static const int16_t MACEtab4[][2] = { + { 64, 216}, { 67, 226}, { 70, 236}, { 74, 246}, + { 77, 257}, { 80, 268}, { 84, 280}, { 88, 294}, + { 92, 307}, { 96, 321}, { 100, 334}, { 104, 350}, + { 109, 365}, { 114, 382}, { 119, 399}, { 124, 416}, + { 130, 434}, { 136, 454}, { 142, 475}, { 148, 495}, + { 155, 519}, { 162, 541}, { 169, 564}, { 176, 590}, + { 185, 617}, { 193, 644}, { 201, 673}, { 210, 703}, + { 220, 735}, { 230, 767}, { 240, 801}, { 251, 838}, + { 262, 876}, { 274, 914}, { 286, 955}, { 299, 997}, + { 312, 1041}, { 326, 1089}, { 341, 1138}, { 356, 1188}, + { 372, 1241}, { 388, 1297}, { 406, 1354}, { 424, 1415}, + { 443, 1478}, { 462, 1544}, { 483, 1613}, { 505, 1684}, + { 527, 1760}, { 551, 1838}, { 576, 1921}, { 601, 2007}, + { 628, 2097}, { 656, 2190}, { 686, 2288}, { 716, 2389}, + { 748, 2496}, { 781, 2607}, { 816, 2724}, { 853, 2846}, + { 891, 2973}, { 930, 3104}, { 972, 3243}, { 1016, 3389}, + { 1061, 3539}, { 1108, 3698}, { 1158, 3862}, { 1209, 4035}, + { 1264, 4216}, { 1320, 4403}, { 1379, 4599}, { 1441, 4806}, + { 1505, 5019}, { 1572, 5244}, { 1642, 5477}, { 1715, 5722}, + { 1792, 5978}, { 1872, 6245}, { 1955, 6522}, { 2043, 6813}, + { 2134, 7118}, { 2229, 7436}, { 2329, 7767}, { 2432, 8114}, + { 2541, 8477}, { 2655, 8854}, { 2773, 9250}, { 2897, 9663}, + { 3026, 10094}, { 3162, 10546}, { 3303, 11016}, { 3450, 11508}, + { 3604, 12020}, { 3765, 12556}, { 3933, 13118}, { 4108, 13703}, + { 4292, 14315}, { 4483, 14953}, { 4683, 15621}, { 4892, 16318}, + { 5111, 17046}, { 5339, 17807}, { 5577, 18602}, { 5826, 19433}, + { 6086, 20300}, { 6358, 21205}, { 6642, 22152}, { 6938, 23141}, + { 7248, 24173}, { 7571, 25252}, { 7909, 26380}, { 8262, 27557}, + { 8631, 28786}, { 9016, 30072}, { 9419, 31413}, { 9839, 32767}, + { 10278, 32767}, { 10737, 32767}, { 11216, 32767}, { 11717, 32767}, + { 12240, 32767}, { 12786, 32767}, { 13356, 32767}, { 13953, 32767}, + { 14576, 32767}, { 15226, 32767}, { 15906, 32767}, { 16615, 32767} }; #define QT_8S_2_16S(x) (((x) & 0xFF00) | (((x) >> 8) & 0xFF)) @@ -265,7 +169,10 @@ static void chomp3(ChannelData *ctx, int16_t *output, uint8_t val, { int16_t current; - current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val]; + if (val < tab2_stride) + current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val]; + else + current = - 1 - tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + 2*tab2_stride-val-1]; current = mace_broken_clip_int16(current + ctx->lev); @@ -282,7 +189,10 @@ static void chomp6(ChannelData *ctx, int16_t *output, uint8_t val, { int16_t current; - current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val]; + if (val < tab2_stride) + current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val]; + else + current = - 1 - tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + 2*tab2_stride-val-1]; if ((ctx->previous ^ current) >= 0) { ctx->factor = FFMIN(ctx->factor + 506, 32767); @@ -332,13 +242,13 @@ static int mace3_decode_frame(AVCodecContext *avctx, for (k=0; k < 2; k++) { uint8_t pkt = buf[i*2 + j*2*avctx->channels + k]; chomp3(&ctx->chd[i], output, pkt &7, MACEtab1, MACEtab2, - 8, avctx->channels); - output += avctx->channels; - chomp3(&ctx->chd[i], output,(pkt >> 3) &3, MACEtab3, MACEtab4, 4, avctx->channels); output += avctx->channels; + chomp3(&ctx->chd[i], output,(pkt >> 3) &3, MACEtab3, MACEtab4, + 2, avctx->channels); + output += avctx->channels; chomp3(&ctx->chd[i], output, pkt >> 5 , MACEtab1, MACEtab2, - 8, avctx->channels); + 4, avctx->channels); output += avctx->channels; } } @@ -363,13 +273,13 @@ static int mace6_decode_frame(AVCodecContext *avctx, uint8_t pkt = buf[i + j*avctx->channels]; chomp6(&ctx->chd[i], output, pkt >> 5 , MACEtab1, MACEtab2, - 8, avctx->channels); - output += avctx->channels << 1; - chomp6(&ctx->chd[i], output,(pkt >> 3) & 3, MACEtab3, MACEtab4, 4, avctx->channels); output += avctx->channels << 1; + chomp6(&ctx->chd[i], output,(pkt >> 3) & 3, MACEtab3, MACEtab4, + 2, avctx->channels); + output += avctx->channels << 1; chomp6(&ctx->chd[i], output, pkt & 7, MACEtab1, MACEtab2, - 8, avctx->channels); + 4, avctx->channels); output += avctx->channels << 1; } }