diff options
| author | Yoann Lopes <yoann.lopes@digia.com> | 2014-01-14 18:42:09 +0100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-01-17 15:11:24 +0100 |
| commit | a52f552d4274eeaeb3a7362c509e77df501b1349 (patch) | |
| tree | cff075acddd128c205d6b2def73af35d6a92f1d8 | |
| parent | 88ef2bf83de18542428151553cbfa87de2469c90 (diff) | |
Android: optimized NV21 top ARGB32 conversion.
Now based on fixed-point arithmetic and uses pre-generated lookup tables
for YUV coefficients and RGB clamping.
The new implementation is on average 2x-3x faster than the previous one
(tested on the Samsung Galaxy S4).
Change-Id: I1daf12f7f9b2f2334e90e0ede79e6d83800f1db6
Reviewed-by: Denis Kormalev <dkormalev@ics.com>
Reviewed-by: Christian Stromme <christian.stromme@digia.com>
| -rw-r--r-- | src/plugins/android/src/common/qandroidmultimediautils.cpp | 565 |
1 files changed, 550 insertions, 15 deletions
diff --git a/src/plugins/android/src/common/qandroidmultimediautils.cpp b/src/plugins/android/src/common/qandroidmultimediautils.cpp index 9bf38a869..230dfe65f 100644 --- a/src/plugins/android/src/common/qandroidmultimediautils.cpp +++ b/src/plugins/android/src/common/qandroidmultimediautils.cpp @@ -76,28 +76,563 @@ bool qt_sizeLessThan(const QSize &s1, const QSize &s2) return s1.width() * s1.height() < s2.width() * s2.height(); } +// Pre-computed Y coefficients for all possible y values (0-255). Stored as fixed-point (16:16) +// Y = 1.164 * (y - 16) +static const int coefficientsY[256] = { + -593888, -555746, -517604, -479462, -441320, -403178, -365036, -326894, -288752, -250610, + -212468, -174326, -136184, -98042, -59900, -21758, 16384, 54526, 92668, 130810, + 168952, 207094, 245236, 283378, 321520, 359662, 397804, 435946, 474088, 512230, + 550372, 588514, 626656, 664798, 702940, 741082, 779224, 817366, 855508, 893650, + 931792, 969934, 1008076, 1046218, 1084360, 1122502, 1160644, 1198786, 1236928, 1275070, + 1313212, 1351354, 1389496, 1427638, 1465780, 1503922, 1542064, 1580206, 1618348, 1656490, + 1694632, 1732774, 1770916, 1809058, 1847200, 1885342, 1923484, 1961626, 1999768, 2037910, + 2076052, 2114194, 2152336, 2190478, 2228620, 2266762, 2304904, 2343046, 2381188, 2419330, + 2457472, 2495614, 2533756, 2571898, 2610040, 2648182, 2686324, 2724466, 2762608, 2800750, + 2838892, 2877034, 2915176, 2953318, 2991460, 3029602, 3067744, 3105886, 3144028, 3182170, + 3220312, 3258454, 3296596, 3334738, 3372880, 3411022, 3449164, 3487306, 3525448, 3563590, + 3601732, 3639874, 3678016, 3716158, 3754300, 3792442, 3830584, 3868726, 3906868, 3945010, + 3983152, 4021294, 4059436, 4097578, 4135720, 4173862, 4212004, 4250146, 4288288, 4326430, + 4364572, 4402714, 4440856, 4478998, 4517140, 4555282, 4593424, 4631566, 4669708, 4707850, + 4745992, 4784134, 4822276, 4860418, 4898560, 4936702, 4974844, 5012986, 5051128, 5089270, + 5127412, 5165554, 5203696, 5241838, 5279980, 5318122, 5356264, 5394406, 5432548, 5470690, + 5508832, 5546974, 5585116, 5623258, 5661400, 5699542, 5737684, 5775826, 5813968, 5852110, + 5890252, 5928394, 5966536, 6004678, 6042820, 6080962, 6119104, 6157246, 6195388, 6233530, + 6271672, 6309814, 6347956, 6386098, 6424240, 6462382, 6500524, 6538666, 6576808, 6614950, + 6653092, 6691234, 6729376, 6767518, 6805660, 6843802, 6881944, 6920086, 6958228, 6996370, + 7034512, 7072654, 7110796, 7148938, 7187080, 7225222, 7263364, 7301506, 7339648, 7377790, + 7415932, 7454074, 7492216, 7530358, 7568500, 7606642, 7644784, 7682926, 7721068, 7759210, + 7797352, 7835494, 7873636, 7911778, 7949920, 7988062, 8026204, 8064346, 8102488, 8140630, + 8178772, 8216914, 8255056, 8293198, 8331340, 8369482, 8407624, 8445766, 8483908, 8522050, + 8560192, 8598334, 8636476, 8674618, 8712760, 8750902, 8789044, 8827186, 8865328, 8903470, + 8941612, 8979754, 9017896, 9056038, 9094180, 9132322 +}; + +// V lookup table for the Red component. Stored as fixed-point (16:16). +// V = 1.596 * (v - 128) +static const int coefficientsRV[256] = { + -6694144, -6641846, -6589548, -6537250, -6484952, -6432654, -6380356, -6328058, -6275760, + -6223462, -6171164, -6118866, -6066568, -6014270, -5961972, -5909674, -5857376, -5805078, + -5752780, -5700482, -5648184, -5595886, -5543588, -5491290, -5438992, -5386694, -5334396, + -5282098, -5229800, -5177502, -5125204, -5072906, -5020608, -4968310, -4916012, -4863714, + -4811416, -4759118, -4706820, -4654522, -4602224, -4549926, -4497628, -4445330, -4393032, + -4340734, -4288436, -4236138, -4183840, -4131542, -4079244, -4026946, -3974648, -3922350, + -3870052, -3817754, -3765456, -3713158, -3660860, -3608562, -3556264, -3503966, -3451668, + -3399370, -3347072, -3294774, -3242476, -3190178, -3137880, -3085582, -3033284, -2980986, + -2928688, -2876390, -2824092, -2771794, -2719496, -2667198, -2614900, -2562602, -2510304, + -2458006, -2405708, -2353410, -2301112, -2248814, -2196516, -2144218, -2091920, -2039622, + -1987324, -1935026, -1882728, -1830430, -1778132, -1725834, -1673536, -1621238, -1568940, + -1516642, -1464344, -1412046, -1359748, -1307450, -1255152, -1202854, -1150556, -1098258, + -1045960, -993662, -941364, -889066, -836768, -784470, -732172, -679874, -627576, + -575278, -522980, -470682, -418384, -366086, -313788, -261490, -209192, -156894, + -104596, -52298, 0, 52298, 104596, 156894, 209192, 261490, 313788, + 366086, 418384, 470682, 522980, 575278, 627576, 679874, 732172, 784470, + 836768, 889066, 941364, 993662, 1045960, 1098258, 1150556, 1202854, 1255152, + 1307450, 1359748, 1412046, 1464344, 1516642, 1568940, 1621238, 1673536, 1725834, + 1778132, 1830430, 1882728, 1935026, 1987324, 2039622, 2091920, 2144218, 2196516, + 2248814, 2301112, 2353410, 2405708, 2458006, 2510304, 2562602, 2614900, 2667198, + 2719496, 2771794, 2824092, 2876390, 2928688, 2980986, 3033284, 3085582, 3137880, + 3190178, 3242476, 3294774, 3347072, 3399370, 3451668, 3503966, 3556264, 3608562, + 3660860, 3713158, 3765456, 3817754, 3870052, 3922350, 3974648, 4026946, 4079244, + 4131542, 4183840, 4236138, 4288436, 4340734, 4393032, 4445330, 4497628, 4549926, + 4602224, 4654522, 4706820, 4759118, 4811416, 4863714, 4916012, 4968310, 5020608, + 5072906, 5125204, 5177502, 5229800, 5282098, 5334396, 5386694, 5438992, 5491290, + 5543588, 5595886, 5648184, 5700482, 5752780, 5805078, 5857376, 5909674, 5961972, + 6014270, 6066568, 6118866, 6171164, 6223462, 6275760, 6328058, 6380356, 6432654, + 6484952, 6537250, 6589548, 6641846 +}; + +// U lookup table for the Green component. Stored as fixed-point (16:16). +// U = 0.391 * (u - 128) +static const int coefficientsGU[256] = { + 1639936, 1627124, 1614312, 1601500, 1588688, 1575876, 1563064, 1550252, 1537440, + 1524628, 1511816, 1499004, 1486192, 1473380, 1460568, 1447756, 1434944, 1422132, + 1409320, 1396508, 1383696, 1370884, 1358072, 1345260, 1332448, 1319636, 1306824, + 1294012, 1281200, 1268388, 1255576, 1242764, 1229952, 1217140, 1204328, 1191516, + 1178704, 1165892, 1153080, 1140268, 1127456, 1114644, 1101832, 1089020, 1076208, + 1063396, 1050584, 1037772, 1024960, 1012148, 999336, 986524, 973712, 960900, + 948088, 935276, 922464, 909652, 896840, 884028, 871216, 858404, 845592, + 832780, 819968, 807156, 794344, 781532, 768720, 755908, 743096, 730284, + 717472, 704660, 691848, 679036, 666224, 653412, 640600, 627788, 614976, + 602164, 589352, 576540, 563728, 550916, 538104, 525292, 512480, 499668, + 486856, 474044, 461232, 448420, 435608, 422796, 409984, 397172, 384360, + 371548, 358736, 345924, 333112, 320300, 307488, 294676, 281864, 269052, + 256240, 243428, 230616, 217804, 204992, 192180, 179368, 166556, 153744, + 140932, 128120, 115308, 102496, 89684, 76872, 64060, 51248, 38436, + 25624, 12812, 0, -12812, -25624, -38436, -51248, -64060, -76872, + -89684, -102496, -115308, -128120, -140932, -153744, -166556, -179368, -192180, + -204992, -217804, -230616, -243428, -256240, -269052, -281864, -294676, -307488, + -320300, -333112, -345924, -358736, -371548, -384360, -397172, -409984, -422796, + -435608, -448420, -461232, -474044, -486856, -499668, -512480, -525292, -538104, + -550916, -563728, -576540, -589352, -602164, -614976, -627788, -640600, -653412, + -666224, -679036, -691848, -704660, -717472, -730284, -743096, -755908, -768720, + -781532, -794344, -807156, -819968, -832780, -845592, -858404, -871216, -884028, + -896840, -909652, -922464, -935276, -948088, -960900, -973712, -986524, -999336, + -1012148, -1024960, -1037772, -1050584, -1063396, -1076208, -1089020, -1101832, -1114644, + -1127456, -1140268, -1153080, -1165892, -1178704, -1191516, -1204328, -1217140, -1229952, + -1242764, -1255576, -1268388, -1281200, -1294012, -1306824, -1319636, -1332448, -1345260, + -1358072, -1370884, -1383696, -1396508, -1409320, -1422132, -1434944, -1447756, -1460568, + -1473380, -1486192, -1499004, -1511816, -1524628, -1537440, -1550252, -1563064, -1575876, + -1588688, -1601500, -1614312, -1627124 +}; + +// V lookup table for the Green component. Stored as fixed-point (16:16). +// V = 0.813 * (v - 128) +static const int coefficientsGV[256] = { + 3409920, 3383280, 3356640, 3330000, 3303360, 3276720, 3250080, 3223440, 3196800, + 3170160, 3143520, 3116880, 3090240, 3063600, 3036960, 3010320, 2983680, 2957040, + 2930400, 2903760, 2877120, 2850480, 2823840, 2797200, 2770560, 2743920, 2717280, + 2690640, 2664000, 2637360, 2610720, 2584080, 2557440, 2530800, 2504160, 2477520, + 2450880, 2424240, 2397600, 2370960, 2344320, 2317680, 2291040, 2264400, 2237760, + 2211120, 2184480, 2157840, 2131200, 2104560, 2077920, 2051280, 2024640, 1998000, + 1971360, 1944720, 1918080, 1891440, 1864800, 1838160, 1811520, 1784880, 1758240, + 1731600, 1704960, 1678320, 1651680, 1625040, 1598400, 1571760, 1545120, 1518480, + 1491840, 1465200, 1438560, 1411920, 1385280, 1358640, 1332000, 1305360, 1278720, + 1252080, 1225440, 1198800, 1172160, 1145520, 1118880, 1092240, 1065600, 1038960, + 1012320, 985680, 959040, 932400, 905760, 879120, 852480, 825840, 799200, + 772560, 745920, 719280, 692640, 666000, 639360, 612720, 586080, 559440, + 532800, 506160, 479520, 452880, 426240, 399600, 372960, 346320, 319680, + 293040, 266400, 239760, 213120, 186480, 159840, 133200, 106560, 79920, + 53280, 26640, 0, -26640, -53280, -79920, -106560, -133200, -159840, + -186480, -213120, -239760, -266400, -293040, -319680, -346320, -372960, -399600, + -426240, -452880, -479520, -506160, -532800, -559440, -586080, -612720, -639360, + -666000, -692640, -719280, -745920, -772560, -799200, -825840, -852480, -879120, + -905760, -932400, -959040, -985680, -1012320, -1038960, -1065600, -1092240, -1118880, + -1145520, -1172160, -1198800, -1225440, -1252080, -1278720, -1305360, -1332000, -1358640, + -1385280, -1411920, -1438560, -1465200, -1491840, -1518480, -1545120, -1571760, -1598400, + -1625040, -1651680, -1678320, -1704960, -1731600, -1758240, -1784880, -1811520, -1838160, + -1864800, -1891440, -1918080, -1944720, -1971360, -1998000, -2024640, -2051280, -2077920, + -2104560, -2131200, -2157840, -2184480, -2211120, -2237760, -2264400, -2291040, -2317680, + -2344320, -2370960, -2397600, -2424240, -2450880, -2477520, -2504160, -2530800, -2557440, + -2584080, -2610720, -2637360, -2664000, -2690640, -2717280, -2743920, -2770560, -2797200, + -2823840, -2850480, -2877120, -2903760, -2930400, -2957040, -2983680, -3010320, -3036960, + -3063600, -3090240, -3116880, -3143520, -3170160, -3196800, -3223440, -3250080, -3276720, + -3303360, -3330000, -3356640, -3383280 +}; + +// U lookup table for the Blue component. Stored as fixed-point (16:16). +// U = 2.018 * (u - 128) +static const int coefficientsBU[256] = { + -8464128, -8398002, -8331876, -8265750, -8199624, -8133498, -8067372, -8001246, -7935120, + -7868994, -7802868, -7736742, -7670616, -7604490, -7538364, -7472238, -7406112, -7339986, + -7273860, -7207734, -7141608, -7075482, -7009356, -6943230, -6877104, -6810978, -6744852, + -6678726, -6612600, -6546474, -6480348, -6414222, -6348096, -6281970, -6215844, -6149718, + -6083592, -6017466, -5951340, -5885214, -5819088, -5752962, -5686836, -5620710, -5554584, + -5488458, -5422332, -5356206, -5290080, -5223954, -5157828, -5091702, -5025576, -4959450, + -4893324, -4827198, -4761072, -4694946, -4628820, -4562694, -4496568, -4430442, -4364316, + -4298190, -4232064, -4165938, -4099812, -4033686, -3967560, -3901434, -3835308, -3769182, + -3703056, -3636930, -3570804, -3504678, -3438552, -3372426, -3306300, -3240174, -3174048, + -3107922, -3041796, -2975670, -2909544, -2843418, -2777292, -2711166, -2645040, -2578914, + -2512788, -2446662, -2380536, -2314410, -2248284, -2182158, -2116032, -2049906, -1983780, + -1917654, -1851528, -1785402, -1719276, -1653150, -1587024, -1520898, -1454772, -1388646, + -1322520, -1256394, -1190268, -1124142, -1058016, -991890, -925764, -859638, -793512, + -727386, -661260, -595134, -529008, -462882, -396756, -330630, -264504, -198378, + -132252, -66126, 0, 66126, 132252, 198378, 264504, 330630, 396756, + 462882, 529008, 595134, 661260, 727386, 793512, 859638, 925764, 991890, + 1058016, 1124142, 1190268, 1256394, 1322520, 1388646, 1454772, 1520898, 1587024, + 1653150, 1719276, 1785402, 1851528, 1917654, 1983780, 2049906, 2116032, 2182158, + 2248284, 2314410, 2380536, 2446662, 2512788, 2578914, 2645040, 2711166, 2777292, + 2843418, 2909544, 2975670, 3041796, 3107922, 3174048, 3240174, 3306300, 3372426, + 3438552, 3504678, 3570804, 3636930, 3703056, 3769182, 3835308, 3901434, 3967560, + 4033686, 4099812, 4165938, 4232064, 4298190, 4364316, 4430442, 4496568, 4562694, + 4628820, 4694946, 4761072, 4827198, 4893324, 4959450, 5025576, 5091702, 5157828, + 5223954, 5290080, 5356206, 5422332, 5488458, 5554584, 5620710, 5686836, 5752962, + 5819088, 5885214, 5951340, 6017466, 6083592, 6149718, 6215844, 6281970, 6348096, + 6414222, 6480348, 6546474, 6612600, 6678726, 6744852, 6810978, 6877104, 6943230, + 7009356, 7075482, 7141608, 7207734, 7273860, 7339986, 7406112, 7472238, 7538364, + 7604490, 7670616, 7736742, 7802868, 7868994, 7935120, 8001246, 8067372, 8133498, + 8199624, 8265750, 8331876, 8398002 +}; + +// R = min(max(r, 0), 255) << 16 +// where 'r' is the converted red component from YUV, which is always in the range -320 <= r < 704 +// and needs to be clamped to 0-255. It also precomputes the bitshift needed to create an RGB value. +static const quint32 _clampedR[1024] = { + 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, 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, 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, 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, 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, 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, 0, 0, + 0, 65536, 131072, 196608, 262144, 327680, 393216, 458752, + 524288, 589824, 655360, 720896, 786432, 851968, 917504, 983040, + 1048576, 1114112, 1179648, 1245184, 1310720, 1376256, 1441792, 1507328, + 1572864, 1638400, 1703936, 1769472, 1835008, 1900544, 1966080, 2031616, + 2097152, 2162688, 2228224, 2293760, 2359296, 2424832, 2490368, 2555904, + 2621440, 2686976, 2752512, 2818048, 2883584, 2949120, 3014656, 3080192, + 3145728, 3211264, 3276800, 3342336, 3407872, 3473408, 3538944, 3604480, + 3670016, 3735552, 3801088, 3866624, 3932160, 3997696, 4063232, 4128768, + 4194304, 4259840, 4325376, 4390912, 4456448, 4521984, 4587520, 4653056, + 4718592, 4784128, 4849664, 4915200, 4980736, 5046272, 5111808, 5177344, + 5242880, 5308416, 5373952, 5439488, 5505024, 5570560, 5636096, 5701632, + 5767168, 5832704, 5898240, 5963776, 6029312, 6094848, 6160384, 6225920, + 6291456, 6356992, 6422528, 6488064, 6553600, 6619136, 6684672, 6750208, + 6815744, 6881280, 6946816, 7012352, 7077888, 7143424, 7208960, 7274496, + 7340032, 7405568, 7471104, 7536640, 7602176, 7667712, 7733248, 7798784, + 7864320, 7929856, 7995392, 8060928, 8126464, 8192000, 8257536, 8323072, + 8388608, 8454144, 8519680, 8585216, 8650752, 8716288, 8781824, 8847360, + 8912896, 8978432, 9043968, 9109504, 9175040, 9240576, 9306112, 9371648, + 9437184, 9502720, 9568256, 9633792, 9699328, 9764864, 9830400, 9895936, + 9961472, 10027008, 10092544, 10158080, 10223616, 10289152, 10354688, 10420224, + 10485760, 10551296, 10616832, 10682368, 10747904, 10813440, 10878976, 10944512, + 11010048, 11075584, 11141120, 11206656, 11272192, 11337728, 11403264, 11468800, + 11534336, 11599872, 11665408, 11730944, 11796480, 11862016, 11927552, 11993088, + 12058624, 12124160, 12189696, 12255232, 12320768, 12386304, 12451840, 12517376, + 12582912, 12648448, 12713984, 12779520, 12845056, 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16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, + 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680, 16711680 +}; + +// G = min(max(g, 0), 255) << 8 +// where 'g' is the converted green component from YUV, which is always in the range -320 <= r < 704 +// and needs to be clamped to 0-255. It also precomputes the bitshift needed to create an RGB value. +static const quint32 _clampedG[1024] = { + 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, 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, 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, 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, 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, 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, 0, 0, + 0, 256, 512, 768, 1024, 1280, 1536, 1792, + 2048, 2304, 2560, 2816, 3072, 3328, 3584, 3840, + 4096, 4352, 4608, 4864, 5120, 5376, 5632, 5888, + 6144, 6400, 6656, 6912, 7168, 7424, 7680, 7936, + 8192, 8448, 8704, 8960, 9216, 9472, 9728, 9984, + 10240, 10496, 10752, 11008, 11264, 11520, 11776, 12032, + 12288, 12544, 12800, 13056, 13312, 13568, 13824, 14080, + 14336, 14592, 14848, 15104, 15360, 15616, 15872, 16128, + 16384, 16640, 16896, 17152, 17408, 17664, 17920, 18176, + 18432, 18688, 18944, 19200, 19456, 19712, 19968, 20224, + 20480, 20736, 20992, 21248, 21504, 21760, 22016, 22272, + 22528, 22784, 23040, 23296, 23552, 23808, 24064, 24320, + 24576, 24832, 25088, 25344, 25600, 25856, 26112, 26368, + 26624, 26880, 27136, 27392, 27648, 27904, 28160, 28416, + 28672, 28928, 29184, 29440, 29696, 29952, 30208, 30464, + 30720, 30976, 31232, 31488, 31744, 32000, 32256, 32512, + 32768, 33024, 33280, 33536, 33792, 34048, 34304, 34560, + 34816, 35072, 35328, 35584, 35840, 36096, 36352, 36608, + 36864, 37120, 37376, 37632, 37888, 38144, 38400, 38656, + 38912, 39168, 39424, 39680, 39936, 40192, 40448, 40704, + 40960, 41216, 41472, 41728, 41984, 42240, 42496, 42752, + 43008, 43264, 43520, 43776, 44032, 44288, 44544, 44800, + 45056, 45312, 45568, 45824, 46080, 46336, 46592, 46848, + 47104, 47360, 47616, 47872, 48128, 48384, 48640, 48896, + 49152, 49408, 49664, 49920, 50176, 50432, 50688, 50944, + 51200, 51456, 51712, 51968, 52224, 52480, 52736, 52992, + 53248, 53504, 53760, 54016, 54272, 54528, 54784, 55040, + 55296, 55552, 55808, 56064, 56320, 56576, 56832, 57088, + 57344, 57600, 57856, 58112, 58368, 58624, 58880, 59136, + 59392, 59648, 59904, 60160, 60416, 60672, 60928, 61184, + 61440, 61696, 61952, 62208, 62464, 62720, 62976, 63232, + 63488, 63744, 64000, 64256, 64512, 64768, 65024, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280, + 65280, 65280, 65280, 65280, 65280, 65280, 65280, 65280 +}; + +// B = min(max(b, 0), 255) +// where 'b' is the converted blue component from YUV, which is always in the range -320 <= r < 704 +static const quint32 _clampedB[1024] = { + 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, 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, 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, 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, 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, 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, 0, 0, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, + 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, + 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, + 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, + 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, + 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, + 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, + 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, + 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, + 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, + 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, + 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, + 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, + 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 +}; + +static const quint32 *clampedR = _clampedR + 320; +static const quint32 *clampedG = _clampedG + 320; +static const quint32 *clampedB = _clampedB + 320; + +#define MAKE_RGB(r, g, b) 0xff000000 | clampedR[r] | clampedG[g] | clampedB[b] + void qt_convert_NV21_to_ARGB32(const uchar *yuv, quint32 *rgb, int width, int height) { - const int frameSize = width * height; + const uchar *y0 = yuv; + const uchar *y1 = yuv + width; + const uchar *vu = yuv + width * height; + + quint32 *rgb0 = rgb; + quint32 *rgb1 = rgb + width; - int a = 0; - for (int i = 0, ci = 0; i < height; ++i, ci += 1) { - for (int j = 0, cj = 0; j < width; ++j, cj += 1) { - int y = (0xff & ((int) yuv[ci * width + cj])); - int v = (0xff & ((int) yuv[frameSize + (ci >> 1) * width + (cj & ~1) + 0])); - int u = (0xff & ((int) yuv[frameSize + (ci >> 1) * width + (cj & ~1) + 1])); - y = y < 16 ? 16 : y; + for (int i = 0; i < height; i += 2) { + for (int j = 0; j < width; j += 2) { + int v = *vu++; + int u = *vu++; - int r = (int) (1.164f * (y - 16) + 1.596f * (v - 128)); - int g = (int) (1.164f * (y - 16) - 0.813f * (v - 128) - 0.391f * (u - 128)); - int b = (int) (1.164f * (y - 16) + 2.018f * (u - 128)); + int ruv = coefficientsRV[v] >> 15; + int guv = (coefficientsGU[u] + coefficientsGV[v]) >> 15; + int buv = coefficientsBU[u] >> 15; - r = qBound(0, r, 255); - g = qBound(0, g, 255); - b = qBound(0, b, 255); + int y = coefficientsY[*y0++] >> 15; + int r = y + ruv; + int g = y + guv; + int b = y + buv; + *rgb0++ = MAKE_RGB(r, g, b); - rgb[a++] = 0xff000000 | (r << 16) | (g << 8) | b; + y = coefficientsY[*y0++] >> 15; + r = y + ruv; + g = y + guv; + b = y + buv; + *rgb0++ = MAKE_RGB(r, g, b); + + y = coefficientsY[*y1++] >> 15; + r = y + ruv; + g = y + guv; + b = y + buv; + *rgb1++ = MAKE_RGB(r, g, b); + + y = coefficientsY[*y1++] >> 15; + r = y + ruv; + g = y + guv; + b = y + buv; + *rgb1++ = MAKE_RGB(r, g, b); } + + rgb0 += width; + rgb1 += width; + y0 += width; + y1 += width; } } |