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libyuv/source/row_common.cc
fbarchard@google.com 747ceb9fa5 FixedDiv using integers 
BUG=250
TEST=fixed div unittest
R=dingkai@google.com, ryanpetrie@google.com

Review URL: https://webrtc-codereview.appspot.com/1681004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@732 16f28f9a-4ce2-e073-06de-1de4eb20be90
2013-06-18 17:12:15 +00:00

2691 lines
102 KiB
C++
Raw Blame History

/*
* Copyright 2011 The LibYuv Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "libyuv/row.h"
#include <string.h> // For memcpy and memset.
#include "libyuv/basic_types.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
// llvm x86 is poor at ternary operator, so use branchless min/max.
#define USE_BRANCHLESS 1
#if USE_BRANCHLESS
static __inline int32 clamp0(int32 v) {
return ((-(v) >> 31) & (v));
}
static __inline int32 clamp255(int32 v) {
return (((255 - (v)) >> 31) | (v)) & 255;
}
static __inline uint32 Clamp(int32 val) {
int v = clamp0(val);
return static_cast<uint32>(clamp255(v));
}
static __inline uint32 Abs(int32 v) {
int m = v >> 31;
return (v + m) ^ m;
}
#else // USE_BRANCHLESS
static __inline int32 clamp0(int32 v) {
return (v < 0) ? 0 : v;
}
static __inline int32 clamp255(int32 v) {
return (v > 255) ? 255 : v;
}
static __inline uint32 Clamp(int32 val) {
int v = clamp0(val);
return static_cast<uint32>(clamp255(v));
}
static __inline uint32 Abs(int32 v) {
return (v < 0) ? -v : v;
}
#endif // USE_BRANCHLESS
// Fixed point 0.32 reciprocal table.
extern const uint32 kRecipTable[4097] = {
0, 0xffffffff, 2147483648, 1431655808, 1073741824, 858993472,
715827904, 613566784, 536870912, 477218592, 429496736, 390451584,
357913952, 330382112, 306783392, 286331168, 268435456, 252645136,
238609296, 226050912, 214748368, 204522256, 195225792, 186737712,
178956976, 171798688, 165191056, 159072864, 153391696, 148102320,
143165584, 138547328, 134217728, 130150528, 126322568, 122713352,
119304648, 116080200, 113025456, 110127368, 107374184, 104755296,
102261128, 99882960, 97612896, 95443720, 93368856, 91382280,
89478488, 87652392, 85899344, 84215048, 82595528, 81037120,
79536432, 78090312, 76695848, 75350304, 74051160, 72796056,
71582792, 70409296, 69273664, 68174088, 67108864, 66076420,
65075264, 64103988, 63161284, 62245904, 61356676, 60492496,
59652324, 58835168, 58040100, 57266232, 56512728, 55778796,
55063684, 54366676, 53687092, 53024288, 52377648, 51746592,
51130564, 50529028, 49941480, 49367440, 48806448, 48258060,
47721860, 47197444, 46684428, 46182444, 45691140, 45210184,
44739244, 44278012, 43826196, 43383508, 42949672, 42524428,
42107524, 41698712, 41297764, 40904452, 40518560, 40139880,
39768216, 39403368, 39045156, 38693400, 38347924, 38008560,
37675152, 37347540, 37025580, 36709124, 36398028, 36092164,
35791396, 35495596, 35204648, 34918432, 34636832, 34359740,
34087044, 33818640, 33554432, 33294320, 33038210, 32786010,
32537632, 32292988, 32051994, 31814572, 31580642, 31350126,
31122952, 30899046, 30678338, 30460760, 30246248, 30034736,
29826162, 29620464, 29417584, 29217464, 29020050, 28825284,
28633116, 28443492, 28256364, 28071682, 27889398, 27709466,
27531842, 27356480, 27183338, 27012372, 26843546, 26676816,
26512144, 26349492, 26188824, 26030104, 25873296, 25718368,
25565282, 25414008, 25264514, 25116768, 24970740, 24826400,
24683720, 24542670, 24403224, 24265352, 24129030, 23994230,
23860930, 23729102, 23598722, 23469766, 23342214, 23216040,
23091222, 22967740, 22845570, 22724694, 22605092, 22486740,
22369622, 22253716, 22139006, 22025474, 21913098, 21801864,
21691754, 21582750, 21474836, 21367996, 21262214, 21157474,
21053762, 20951060, 20849356, 20748634, 20648882, 20550082,
20452226, 20355296, 20259280, 20164166, 20069940, 19976592,
19884108, 19792476, 19701684, 19611722, 19522578, 19434242,
19346700, 19259944, 19173962, 19088744, 19004280, 18920560,
18837576, 18755316, 18673770, 18592932, 18512790, 18433336,
18354562, 18276456, 18199014, 18122224, 18046082, 17970574,
17895698, 17821442, 17747798, 17674762, 17602324, 17530478,
17459216, 17388532, 17318416, 17248864, 17179870, 17111424,
17043522, 16976156, 16909320, 16843010, 16777216, 16711936,
16647160, 16582886, 16519106, 16455814, 16393006, 16330674,
16268816, 16207424, 16146494, 16086020, 16025998, 15966422,
15907286, 15848588, 15790322, 15732482, 15675064, 15618064,
15561476, 15505298, 15449524, 15394148, 15339170, 15284582,
15230380, 15176564, 15123124, 15070062, 15017368, 14965044,
14913082, 14861480, 14810232, 14759338, 14708792, 14658592,
14608732, 14559212, 14510026, 14461170, 14412642, 14364440,
14316558, 14268994, 14221746, 14174810, 14128182, 14081860,
14035842, 13990122, 13944700, 13899572, 13854734, 13810184,
13765922, 13721940, 13678240, 13634818, 13591670, 13548794,
13506186, 13463848, 13421774, 13379960, 13338408, 13297112,
13256072, 13215284, 13174746, 13134458, 13094412, 13054612,
13015052, 12975732, 12936648, 12897800, 12859184, 12820798,
12782642, 12744710, 12707004, 12669520, 12632258, 12595212,
12558384, 12521772, 12485370, 12449182, 12413200, 12377428,
12341860, 12306498, 12271336, 12236374, 12201612, 12167046,
12132676, 12098500, 12064516, 12030722, 11997116, 11963698,
11930466, 11897416, 11864552, 11831866, 11799362, 11767034,
11734884, 11702908, 11671108, 11639478, 11608020, 11576732,
11545612, 11514658, 11483870, 11453246, 11422786, 11392486,
11362348, 11332368, 11302546, 11272880, 11243370, 11214014,
11184812, 11155760, 11126858, 11098108, 11069504, 11041048,
11012738, 10984572, 10956550, 10928670, 10900932, 10873336,
10845878, 10818558, 10791376, 10764330, 10737418, 10710642,
10683998, 10657488, 10631108, 10604858, 10578738, 10552746,
10526882, 10501144, 10475530, 10450042, 10424678, 10399438,
10374318, 10349320, 10324442, 10299682, 10275042, 10250520,
10226114, 10201824, 10177648, 10153588, 10129640, 10105806,
10082084, 10058472, 10034970, 10011580, 9988296, 9965122,
9942054, 9919094, 9896238, 9873488, 9850842, 9828300,
9805862, 9783526, 9761290, 9739156, 9717122, 9695186,
9673350, 9651612, 9629972, 9608428, 9586982, 9565630,
9544372, 9523210, 9502140, 9481164, 9460280, 9439490,
9418788, 9398178, 9377658, 9357228, 9336886, 9316632,
9296466, 9276388, 9256396, 9236490, 9216668, 9196932,
9177282, 9157714, 9138228, 9118828, 9099508, 9080270,
9061112, 9042036, 9023042, 9004124, 8985288, 8966530,
8947850, 8929246, 8910722, 8892272, 8873900, 8855604,
8837382, 8819236, 8801162, 8783164, 8765240, 8747388,
8729608, 8711902, 8694266, 8676702, 8659208, 8641786,
8624432, 8607150, 8589936, 8572790, 8555712, 8538702,
8521762, 8504886, 8488078, 8471336, 8454660, 8438050,
8421506, 8405024, 8388608, 8372256, 8355968, 8339743,
8323580, 8307481, 8291443, 8275467, 8259553, 8243699,
8227907, 8212175, 8196503, 8180890, 8165337, 8149843,
8134408, 8119031, 8103712, 8088451, 8073247, 8058100,
8043010, 8027977, 8012999, 7998077, 7983211, 7968400,
7953643, 7938942, 7924294, 7909701, 7895161, 7880674,
7866241, 7851860, 7837532, 7823256, 7809032, 7794859,
7780738, 7766668, 7752649, 7738680, 7724762, 7710893,
7697074, 7683305, 7669585, 7655913, 7642291, 7628717,
7615190, 7601712, 7588282, 7574898, 7561562, 7548273,
7535031, 7521834, 7508684, 7495580, 7482522, 7469509,
7456541, 7443618, 7430740, 7417906, 7405116, 7392371,
7379669, 7367011, 7354396, 7341825, 7329296, 7316810,
7304366, 7291965, 7279606, 7267288, 7255013, 7242778,
7230585, 7218433, 7206321, 7194250, 7182220, 7170229,
7158279, 7146368, 7134497, 7122666, 7110873, 7099120,
7087405, 7075729, 7064091, 7052492, 7040930, 7029407,
7017921, 7006472, 6995061, 6983687, 6972350, 6961049,
6949786, 6938558, 6927367, 6916212, 6905092, 6894009,
6882961, 6871948, 6860970, 6850028, 6839120, 6828247,
6817409, 6806605, 6795835, 6785099, 6774397, 6763728,
6753093, 6742492, 6731924, 6721389, 6710887, 6700417,
6689980, 6679576, 6669204, 6658864, 6648556, 6638280,
6628036, 6617824, 6607642, 6597492, 6587373, 6577286,
6567229, 6557202, 6547206, 6537241, 6527306, 6517401,
6507526, 6497681, 6487866, 6478081, 6468324, 6458598,
6448900, 6439232, 6429592, 6419981, 6410399, 6400846,
6391321, 6381824, 6372355, 6362915, 6353502, 6344117,
6334760, 6325431, 6316129, 6306854, 6297606, 6288386,
6279192, 6270025, 6260886, 6251772, 6242685, 6233625,
6224591, 6215582, 6206600, 6197644, 6188714, 6179809,
6170930, 6162077, 6153249, 6144446, 6135668, 6126915,
6118187, 6109484, 6100806, 6092152, 6083523, 6074919,
6066338, 6057782, 6049250, 6040742, 6032258, 6023797,
6015361, 6006948, 5998558, 5990192, 5981849, 5973529,
5965233, 5956959, 5948708, 5940481, 5932276, 5924093,
5915933, 5907796, 5899681, 5891588, 5883517, 5875469,
5867442, 5859437, 5851454, 5843493, 5835554, 5827636,
5819739, 5811864, 5804010, 5796177, 5788366, 5780575,
5772806, 5765057, 5757329, 5749622, 5741935, 5734269,
5726623, 5718998, 5711393, 5703808, 5696243, 5688699,
5681174, 5673669, 5666184, 5658719, 5651273, 5643847,
5636440, 5629053, 5621685, 5614337, 5607007, 5599697,
5592406, 5585133, 5577880, 5570645, 5563429, 5556232,
5549054, 5541894, 5534752, 5527629, 5520524, 5513437,
5506369, 5499318, 5492286, 5485271, 5478275, 5471296,
5464335, 5457392, 5450466, 5443558, 5436668, 5429795,
5422939, 5416100, 5409279, 5402475, 5395688, 5388918,
5382165, 5375429, 5368709, 5362007, 5355321, 5348652,
5341999, 5335363, 5328744, 5322141, 5315554, 5308983,
5302429, 5295891, 5289369, 5282863, 5276373, 5269899,
5263441, 5256998, 5250572, 5244161, 5237765, 5231386,
5225021, 5218673, 5212339, 5206021, 5199719, 5193431,
5187159, 5180902, 5174660, 5168433, 5162221, 5156023,
5149841, 5143674, 5137521, 5131383, 5125260, 5119151,
5113057, 5106977, 5100912, 5094861, 5088824, 5082802,
5076794, 5070800, 5064820, 5058855, 5052903, 5046965,
5041042, 5035132, 5029236, 5023354, 5017485, 5011631,
5005790, 4999962, 4994148, 4988348, 4982561, 4976787,
4971027, 4965280, 4959547, 4953826, 4948119, 4942425,
4936744, 4931076, 4925421, 4919780, 4914150, 4908534,
4902931, 4897340, 4891763, 4886197, 4880645, 4875105,
4869578, 4864063, 4858561, 4853071, 4847593, 4842128,
4836675, 4831235, 4825806, 4820390, 4814986, 4809594,
4804214, 4798846, 4793491, 4788147, 4782815, 4777494,
4772186, 4766890, 4761605, 4756332, 4751070, 4745820,
4740582, 4735356, 4730140, 4724937, 4719745, 4714564,
4709394, 4704236, 4699089, 4693954, 4688829, 4683716,
4678614, 4673523, 4668443, 4663374, 4658316, 4653269,
4648233, 4643208, 4638194, 4633190, 4628198, 4623216,
4618245, 4613284, 4608334, 4603395, 4598466, 4593548,
4588641, 4583743, 4578857, 4573980, 4569114, 4564259,
4559414, 4554579, 4549754, 4544939, 4540135, 4535341,
4530556, 4525782, 4521018, 4516264, 4511521, 4506786,
4502062, 4497348, 4492644, 4487949, 4483265, 4478590,
4473925, 4469269, 4464623, 4459987, 4455361, 4450744,
4446136, 4441538, 4436950, 4432371, 4427802, 4423242,
4418691, 4414150, 4409618, 4405095, 4400581, 4396077,
4391582, 4387097, 4382620, 4378152, 4373694, 4369245,
4364804, 4360373, 4355951, 4351538, 4347133, 4342738,
4338351, 4333973, 4329604, 4325244, 4320893, 4316550,
4312216, 4307891, 4303575, 4299267, 4294968, 4290677,
4286395, 4282121, 4277856, 4273600, 4269351, 4265112,
4260881, 4256658, 4252443, 4248237, 4244039, 4239850,
4235668, 4231495, 4227330, 4223174, 4219025, 4214885,
4210753, 4206628, 4202512, 4198404, 4194304, 4190212,
4186128, 4182052, 4177984, 4173924, 4169871, 4165827,
4161790, 4157761, 4153740, 4149727, 4145721, 4141724,
4137734, 4133751, 4129776, 4125809, 4121850, 4117898,
4113953, 4110017, 4106087, 4102166, 4098251, 4094345,
4090445, 4086553, 4082669, 4078791, 4074922, 4071059,
4067204, 4063356, 4059516, 4055682, 4051856, 4048037,
4044225, 4040421, 4036624, 4032833, 4029050, 4025274,
4021505, 4017743, 4013988, 4010240, 4006499, 4002766,
3999039, 3995319, 3991605, 3987899, 3984200, 3980507,
3976822, 3973143, 3969471, 3965806, 3962147, 3958495,
3954850, 3951212, 3947580, 3943955, 3940337, 3936725,
3933120, 3929522, 3925930, 3922345, 3918766, 3915194,
3911628, 3908069, 3904516, 3900970, 3897430, 3893896,
3890369, 3886848, 3883334, 3879826, 3876324, 3872829,
3869340, 3865857, 3862381, 3858911, 3855447, 3851989,
3848537, 3845092, 3841652, 3838219, 3834792, 3831371,
3827957, 3824548, 3821145, 3817749, 3814358, 3810974,
3807595, 3804223, 3800856, 3797496, 3794141, 3790792,
3787449, 3784112, 3780781, 3777456, 3774137, 3770823,
3767515, 3764213, 3760917, 3757627, 3754342, 3751063,
3747790, 3744523, 3741261, 3738005, 3734754, 3731510,
3728270, 3725037, 3721809, 3718587, 3715370, 3712159,
3708953, 3705753, 3702558, 3699369, 3696185, 3693007,
3689835, 3686667, 3683506, 3680349, 3677198, 3674053,
3670912, 3667777, 3664648, 3661524, 3658405, 3655291,
3652183, 3649080, 3645983, 3642890, 3639803, 3636721,
3633644, 3630573, 3627506, 3624445, 3621389, 3618338,
3615292, 3612252, 3609216, 3606186, 3603161, 3600140,
3597125, 3594115, 3591110, 3588110, 3585115, 3582125,
3579140, 3576159, 3573184, 3570214, 3567249, 3564288,
3561333, 3558382, 3555437, 3552496, 3549560, 3546629,
3543703, 3540781, 3537864, 3534953, 3532046, 3529143,
3526246, 3523353, 3520465, 3517582, 3514703, 3511829,
3508960, 3506096, 3503236, 3500381, 3497530, 3494685,
3491843, 3489007, 3486175, 3483347, 3480525, 3477706,
3474893, 3472084, 3469279, 3466479, 3463683, 3460892,
3458106, 3455324, 3452546, 3449773, 3447004, 3444240,
3441480, 3438725, 3435974, 3433227, 3430485, 3427747,
3425014, 3422285, 3419560, 3416840, 3414124, 3411412,
3408704, 3406001, 3403302, 3400608, 3397917, 3395231,
3392549, 3389872, 3387198, 3384529, 3381864, 3379203,
3376547, 3373894, 3371246, 3368602, 3365962, 3363326,
3360694, 3358067, 3355443, 3352824, 3350209, 3347597,
3344990, 3342387, 3339788, 3337193, 3334602, 3332015,
3329432, 3326853, 3324278, 3321707, 3319140, 3316577,
3314018, 3311463, 3308912, 3306364, 3303821, 3301282,
3298746, 3296214, 3293687, 3291163, 3288643, 3286127,
3283614, 3281106, 3278601, 3276100, 3273603, 3271110,
3268621, 3266135, 3263653, 3261175, 3258701, 3256230,
3253763, 3251300, 3248841, 3246385, 3243933, 3241485,
3239040, 3236599, 3234162, 3231729, 3229299, 3226873,
3224450, 3222031, 3219616, 3217204, 3214796, 3212392,
3209991, 3207593, 3205200, 3202809, 3200423, 3198040,
3195660, 3193284, 3190912, 3188543, 3186178, 3183816,
3181457, 3179102, 3176751, 3174403, 3172059, 3169718,
3167380, 3165046, 3162715, 3160388, 3158064, 3155744,
3153427, 3151113, 3148803, 3146496, 3144193, 3141893,
3139596, 3137303, 3135013, 3132726, 3130443, 3128163,
3125886, 3123613, 3121343, 3119076, 3116812, 3114552,
3112295, 3110042, 3107791, 3105544, 3103300, 3101060,
3098822, 3096588, 3094357, 3092129, 3089905, 3087683,
3085465, 3083250, 3081038, 3078830, 3076624, 3074422,
3072223, 3070027, 3067834, 3065644, 3063458, 3061274,
3059094, 3056916, 3054742, 3052571, 3050403, 3048238,
3046076, 3043917, 3041762, 3039609, 3037459, 3035313,
3033169, 3031029, 3028891, 3026756, 3024625, 3022496,
3020371, 3018248, 3016129, 3014012, 3011899, 3009788,
3007680, 3005576, 3003474, 3001375, 2999279, 2997186,
2995096, 2993009, 2990924, 2988843, 2986765, 2984689,
2982616, 2980546, 2978480, 2976415, 2974354, 2972296,
2970240, 2968188, 2966138, 2964091, 2962047, 2960005,
2957967, 2955931, 2953898, 2951868, 2949840, 2947816,
2945794, 2943775, 2941759, 2939745, 2937734, 2935726,
2933721, 2931718, 2929719, 2927722, 2925727, 2923736,
2921747, 2919760, 2917777, 2915796, 2913818, 2911842,
2909870, 2907899, 2905932, 2903967, 2902005, 2900046,
2898089, 2896135, 2894183, 2892234, 2890288, 2888344,
2886403, 2884464, 2882529, 2880595, 2878665, 2876736,
2874811, 2872888, 2870968, 2869050, 2867135, 2865222,
2863312, 2861404, 2859499, 2857596, 2855696, 2853799,
2851904, 2850012, 2848122, 2846234, 2844349, 2842467,
2840587, 2838710, 2836835, 2834962, 2833092, 2831224,
2829359, 2827497, 2825637, 2823779, 2821923, 2820071,
2818220, 2816372, 2814527, 2812683, 2810843, 2809004,
2807168, 2805335, 2803504, 2801675, 2799848, 2798024,
2796203, 2794384, 2792567, 2790752, 2788940, 2787130,
2785323, 2783517, 2781715, 2779914, 2778116, 2776320,
2774527, 2772736, 2770947, 2769160, 2767376, 2765594,
2763814, 2762037, 2760262, 2758489, 2756719, 2754950,
2753184, 2751421, 2749659, 2747900, 2746143, 2744388,
2742636, 2740885, 2739137, 2737392, 2735648, 2733907,
2732168, 2730431, 2728696, 2726963, 2725233, 2723505,
2721779, 2720055, 2718334, 2716614, 2714897, 2713182,
2711469, 2709759, 2708050, 2706344, 2704639, 2702937,
2701237, 2699540, 2697844, 2696150, 2694459, 2692770,
2691082, 2689397, 2687714, 2686033, 2684355, 2682678,
2681003, 2679331, 2677661, 2675992, 2674326, 2672662,
2671000, 2669340, 2667682, 2666026, 2664372, 2662720,
2661070, 2659423, 2657777, 2656133, 2654492, 2652852,
2651215, 2649579, 2647945, 2646314, 2644684, 2643057,
2641431, 2639808, 2638186, 2636567, 2634949, 2633334,
2631720, 2630109, 2628499, 2626891, 2625286, 2623682,
2622080, 2620480, 2618883, 2617287, 2615693, 2614101,
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1215328, 1214984, 1214640, 1214297, 1213954, 1213610,
1213268, 1212925, 1212583, 1212240, 1211898, 1211556,
1211215, 1210873, 1210532, 1210191, 1209850, 1209509,
1209169, 1208828, 1208488, 1208148, 1207809, 1207469,
1207130, 1206791, 1206452, 1206113, 1205774, 1205436,
1205098, 1204759, 1204422, 1204084, 1203747, 1203409,
1203072, 1202735, 1202399, 1202062, 1201726, 1201390,
1201054, 1200718, 1200382, 1200047, 1199712, 1199377,
1199042, 1198707, 1198373, 1198038, 1197704, 1197370,
1197037, 1196703, 1196370, 1196037, 1195704, 1195371,
1195038, 1194706, 1194374, 1194042, 1193710, 1193378,
1193047, 1192715, 1192384, 1192053, 1191722, 1191392,
1191061, 1190731, 1190401, 1190071, 1189742, 1189412,
1189083, 1188754, 1188425, 1188096, 1187768, 1187439,
1187111, 1186783, 1186455, 1186127, 1185800, 1185473,
1185146, 1184819, 1184492, 1184165, 1183839, 1183513,
1183187, 1182861, 1182535, 1182210, 1181884, 1181559,
1181234, 1180909, 1180585, 1180260, 1179936, 1179612,
1179288, 1178964, 1178641, 1178318, 1177994, 1177671,
1177349, 1177026, 1176703, 1176381, 1176059, 1175737,
1175415, 1175094, 1174772, 1174451, 1174130, 1173809,
1173488, 1173168, 1172847, 1172527, 1172207, 1171887,
1171568, 1171248, 1170929, 1170610, 1170291, 1169972,
1169653, 1169335, 1169017, 1168699, 1168381, 1168063,
1167745, 1167428, 1167111, 1166794, 1166477, 1166160,
1165844, 1165527, 1165211, 1164895, 1164579, 1164263,
1163948, 1163632, 1163317, 1163002, 1162687, 1162373,
1162058, 1161744, 1161430, 1161116, 1160802, 1160488,
1160175, 1159862, 1159548, 1159236, 1158923, 1158610,
1158298, 1157985, 1157673, 1157361, 1157049, 1156738,
1156426, 1156115, 1155804, 1155493, 1155182, 1154872,
1154561, 1154251, 1153941, 1153631, 1153321, 1153011,
1152702, 1152393, 1152084, 1151775, 1151466, 1151157,
1150849, 1150540, 1150232, 1149924, 1149617, 1149309,
1149001, 1148694, 1148387, 1148080, 1147773, 1147467,
1147160, 1146854, 1146548, 1146242, 1145936, 1145630,
1145325, 1145019, 1144714, 1144409, 1144104, 1143800,
1143495, 1143191, 1142887, 1142582, 1142279, 1141975,
1141671, 1141368, 1141065, 1140762, 1140459, 1140156,
1139853, 1139551, 1139249, 1138947, 1138645, 1138343,
1138041, 1137740, 1137438, 1137137, 1136836, 1136535,
1136235, 1135934, 1135634, 1135334, 1135034, 1134734,
1134434, 1134135, 1133835, 1133536, 1133237, 1132938,
1132639, 1132341, 1132042, 1131744, 1131446, 1131148,
1130850, 1130552, 1130255, 1129957, 1129660, 1129363,
1129066, 1128769, 1128473, 1128176, 1127880, 1127584,
1127288, 1126992, 1126697, 1126401, 1126106, 1125811,
1125516, 1125221, 1124926, 1124631, 1124337, 1124043,
1123749, 1123455, 1123161, 1122867, 1122574, 1122281,
1121987, 1121694, 1121401, 1121109, 1120816, 1120524,
1120231, 1119939, 1119647, 1119356, 1119064, 1118772,
1118481, 1118190, 1117899, 1117608, 1117317, 1117027,
1116736, 1116446, 1116156, 1115866, 1115576, 1115286,
1114997, 1114707, 1114418, 1114129, 1113840, 1113551,
1113263, 1112974, 1112686, 1112398, 1112110, 1111822,
1111534, 1111246, 1110959, 1110672, 1110385, 1110098,
1109811, 1109524, 1109237, 1108951, 1108665, 1108379,
1108093, 1107807, 1107521, 1107236, 1106950, 1106665,
1106380, 1106095, 1105810, 1105526, 1105241, 1104957,
1104673, 1104389, 1104105, 1103821, 1103537, 1103254,
1102971, 1102687, 1102404, 1102122, 1101839, 1101556,
1101274, 1100991, 1100709, 1100427, 1100145, 1099864,
1099582, 1099301, 1099019, 1098738, 1098457, 1098176,
1097896, 1097615, 1097335, 1097054, 1096774, 1096494,
1096214, 1095935, 1095655, 1095376, 1095096, 1094817,
1094538, 1094259, 1093981, 1093702, 1093424, 1093145,
1092867, 1092589, 1092311, 1092033, 1091756, 1091478,
1091201, 1090924, 1090647, 1090370, 1090093, 1089817,
1089540, 1089264, 1088988, 1088712, 1088436, 1088160,
1087884, 1087609, 1087334, 1087058, 1086783, 1086508,
1086234, 1085959, 1085684, 1085410, 1085136, 1084862,
1084588, 1084314, 1084040, 1083767, 1083493, 1083220,
1082947, 1082674, 1082401, 1082128, 1081856, 1081583,
1081311, 1081039, 1080767, 1080495, 1080223, 1079952,
1079680, 1079409, 1079138, 1078867, 1078596, 1078325,
1078054, 1077784, 1077513, 1077243, 1076973, 1076703,
1076433, 1076163, 1075894, 1075624, 1075355, 1075086,
1074817, 1074548, 1074279, 1074010, 1073742, 1073474,
1073205, 1072937, 1072669, 1072401, 1072134, 1071866,
1071599, 1071331, 1071064, 1070797, 1070530, 1070264,
1069997, 1069730, 1069464, 1069198, 1068932, 1068666,
1068400, 1068134, 1067869, 1067603, 1067338, 1067073,
1066808, 1066543, 1066278, 1066013, 1065749, 1065484,
1065220, 1064956, 1064692, 1064428, 1064164, 1063901,
1063637, 1063374, 1063111, 1062848, 1062585, 1062322,
1062059, 1061797, 1061534, 1061272, 1061010, 1060748,
1060486, 1060224, 1059962, 1059701, 1059439, 1059178,
1058917, 1058656, 1058395, 1058134, 1057874, 1057613,
1057353, 1057093, 1056833, 1056573, 1056313, 1056053,
1055793, 1055534, 1055275, 1055015, 1054756, 1054497,
1054238, 1053980, 1053721, 1053463, 1053204, 1052946,
1052688, 1052430, 1052172, 1051915, 1051657, 1051400,
1051142, 1050885, 1050628, 1050371, 1050114, 1049858,
1049601, 1049345, 1049088, 1048832, 1048576
};
// Divide num by div and return as 16.16 fixed point result.
int FixedDiv_C(int num, int div) {
if (static_cast<unsigned int>(div) <= 4097u) {
return static_cast<int>((static_cast<int64>(num) * kRecipTable[div]) >> 16);
}
return static_cast<int>((static_cast<int64>(num) << 16) / div);
}
#ifdef LIBYUV_LITTLE_ENDIAN
#define WRITEWORD(p, v) *reinterpret_cast<uint32*>(p) = v
#else
static inline void WRITEWORD(uint8* p, uint32 v) {
p[0] = (uint8)(v & 255);
p[1] = (uint8)((v >> 8) & 255);
p[2] = (uint8)((v >> 16) & 255);
p[3] = (uint8)((v >> 24) & 255);
}
#endif
void RGB24ToARGBRow_C(const uint8* src_rgb24, uint8* dst_argb, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_rgb24[0];
uint8 g = src_rgb24[1];
uint8 r = src_rgb24[2];
dst_argb[0] = b;
dst_argb[1] = g;
dst_argb[2] = r;
dst_argb[3] = 255u;
dst_argb += 4;
src_rgb24 += 3;
}
}
void RAWToARGBRow_C(const uint8* src_raw, uint8* dst_argb, int width) {
for (int x = 0; x < width; ++x) {
uint8 r = src_raw[0];
uint8 g = src_raw[1];
uint8 b = src_raw[2];
dst_argb[0] = b;
dst_argb[1] = g;
dst_argb[2] = r;
dst_argb[3] = 255u;
dst_argb += 4;
src_raw += 3;
}
}
void RGB565ToARGBRow_C(const uint8* src_rgb565, uint8* dst_argb, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_rgb565[0] & 0x1f;
uint8 g = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
uint8 r = src_rgb565[1] >> 3;
dst_argb[0] = (b << 3) | (b >> 2);
dst_argb[1] = (g << 2) | (g >> 4);
dst_argb[2] = (r << 3) | (r >> 2);
dst_argb[3] = 255u;
dst_argb += 4;
src_rgb565 += 2;
}
}
void ARGB1555ToARGBRow_C(const uint8* src_argb1555, uint8* dst_argb,
int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_argb1555[0] & 0x1f;
uint8 g = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
uint8 r = (src_argb1555[1] & 0x7c) >> 2;
uint8 a = src_argb1555[1] >> 7;
dst_argb[0] = (b << 3) | (b >> 2);
dst_argb[1] = (g << 3) | (g >> 2);
dst_argb[2] = (r << 3) | (r >> 2);
dst_argb[3] = -a;
dst_argb += 4;
src_argb1555 += 2;
}
}
void ARGB4444ToARGBRow_C(const uint8* src_argb4444, uint8* dst_argb,
int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_argb4444[0] & 0x0f;
uint8 g = src_argb4444[0] >> 4;
uint8 r = src_argb4444[1] & 0x0f;
uint8 a = src_argb4444[1] >> 4;
dst_argb[0] = (b << 4) | b;
dst_argb[1] = (g << 4) | g;
dst_argb[2] = (r << 4) | r;
dst_argb[3] = (a << 4) | a;
dst_argb += 4;
src_argb4444 += 2;
}
}
void ARGBToRGB24Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_argb[0];
uint8 g = src_argb[1];
uint8 r = src_argb[2];
dst_rgb[0] = b;
dst_rgb[1] = g;
dst_rgb[2] = r;
dst_rgb += 3;
src_argb += 4;
}
}
void ARGBToRAWRow_C(const uint8* src_argb, uint8* dst_rgb, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_argb[0];
uint8 g = src_argb[1];
uint8 r = src_argb[2];
dst_rgb[0] = r;
dst_rgb[1] = g;
dst_rgb[2] = b;
dst_rgb += 3;
src_argb += 4;
}
}
void ARGBToRGB565Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
for (int x = 0; x < width - 1; x += 2) {
uint8 b0 = src_argb[0] >> 3;
uint8 g0 = src_argb[1] >> 2;
uint8 r0 = src_argb[2] >> 3;
uint8 b1 = src_argb[4] >> 3;
uint8 g1 = src_argb[5] >> 2;
uint8 r1 = src_argb[6] >> 3;
WRITEWORD(dst_rgb, b0 | (g0 << 5) | (r0 << 11) |
(b1 << 16) | (g1 << 21) | (r1 << 27));
dst_rgb += 4;
src_argb += 8;
}
if (width & 1) {
uint8 b0 = src_argb[0] >> 3;
uint8 g0 = src_argb[1] >> 2;
uint8 r0 = src_argb[2] >> 3;
*reinterpret_cast<uint16*>(dst_rgb) = b0 | (g0 << 5) | (r0 << 11);
}
}
void ARGBToARGB1555Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
for (int x = 0; x < width - 1; x += 2) {
uint8 b0 = src_argb[0] >> 3;
uint8 g0 = src_argb[1] >> 3;
uint8 r0 = src_argb[2] >> 3;
uint8 a0 = src_argb[3] >> 7;
uint8 b1 = src_argb[4] >> 3;
uint8 g1 = src_argb[5] >> 3;
uint8 r1 = src_argb[6] >> 3;
uint8 a1 = src_argb[7] >> 7;
*reinterpret_cast<uint32*>(dst_rgb) =
b0 | (g0 << 5) | (r0 << 10) | (a0 << 15) |
(b1 << 16) | (g1 << 21) | (r1 << 26) | (a1 << 31);
dst_rgb += 4;
src_argb += 8;
}
if (width & 1) {
uint8 b0 = src_argb[0] >> 3;
uint8 g0 = src_argb[1] >> 3;
uint8 r0 = src_argb[2] >> 3;
uint8 a0 = src_argb[3] >> 7;
*reinterpret_cast<uint16*>(dst_rgb) =
b0 | (g0 << 5) | (r0 << 10) | (a0 << 15);
}
}
void ARGBToARGB4444Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
for (int x = 0; x < width - 1; x += 2) {
uint8 b0 = src_argb[0] >> 4;
uint8 g0 = src_argb[1] >> 4;
uint8 r0 = src_argb[2] >> 4;
uint8 a0 = src_argb[3] >> 4;
uint8 b1 = src_argb[4] >> 4;
uint8 g1 = src_argb[5] >> 4;
uint8 r1 = src_argb[6] >> 4;
uint8 a1 = src_argb[7] >> 4;
*reinterpret_cast<uint32*>(dst_rgb) =
b0 | (g0 << 4) | (r0 << 8) | (a0 << 12) |
(b1 << 16) | (g1 << 20) | (r1 << 24) | (a1 << 28);
dst_rgb += 4;
src_argb += 8;
}
if (width & 1) {
uint8 b0 = src_argb[0] >> 4;
uint8 g0 = src_argb[1] >> 4;
uint8 r0 = src_argb[2] >> 4;
uint8 a0 = src_argb[3] >> 4;
*reinterpret_cast<uint16*>(dst_rgb) =
b0 | (g0 << 4) | (r0 << 8) | (a0 << 12);
}
}
static __inline int RGBToY(uint8 r, uint8 g, uint8 b) {
return (66 * r + 129 * g + 25 * b + 0x1080) >> 8;
}
static __inline int RGBToU(uint8 r, uint8 g, uint8 b) {
return (112 * b - 74 * g - 38 * r + 0x8080) >> 8;
}
static __inline int RGBToV(uint8 r, uint8 g, uint8 b) {
return (112 * r - 94 * g - 18 * b + 0x8080) >> 8;
}
#define MAKEROWY(NAME, R, G, B, BPP) \
void NAME ## ToYRow_C(const uint8* src_argb0, uint8* dst_y, int width) { \
for (int x = 0; x < width; ++x) { \
dst_y[0] = RGBToY(src_argb0[R], src_argb0[G], src_argb0[B]); \
src_argb0 += BPP; \
dst_y += 1; \
} \
} \
void NAME ## ToUVRow_C(const uint8* src_rgb0, int src_stride_rgb, \
uint8* dst_u, uint8* dst_v, int width) { \
const uint8* src_rgb1 = src_rgb0 + src_stride_rgb; \
for (int x = 0; x < width - 1; x += 2) { \
uint8 ab = (src_rgb0[B] + src_rgb0[B + BPP] + \
src_rgb1[B] + src_rgb1[B + BPP]) >> 2; \
uint8 ag = (src_rgb0[G] + src_rgb0[G + BPP] + \
src_rgb1[G] + src_rgb1[G + BPP]) >> 2; \
uint8 ar = (src_rgb0[R] + src_rgb0[R + BPP] + \
src_rgb1[R] + src_rgb1[R + BPP]) >> 2; \
dst_u[0] = RGBToU(ar, ag, ab); \
dst_v[0] = RGBToV(ar, ag, ab); \
src_rgb0 += BPP * 2; \
src_rgb1 += BPP * 2; \
dst_u += 1; \
dst_v += 1; \
} \
if (width & 1) { \
uint8 ab = (src_rgb0[B] + src_rgb1[B]) >> 1; \
uint8 ag = (src_rgb0[G] + src_rgb1[G]) >> 1; \
uint8 ar = (src_rgb0[R] + src_rgb1[R]) >> 1; \
dst_u[0] = RGBToU(ar, ag, ab); \
dst_v[0] = RGBToV(ar, ag, ab); \
} \
}
MAKEROWY(ARGB, 2, 1, 0, 4)
MAKEROWY(BGRA, 1, 2, 3, 4)
MAKEROWY(ABGR, 0, 1, 2, 4)
MAKEROWY(RGBA, 3, 2, 1, 4)
MAKEROWY(RGB24, 2, 1, 0, 3)
MAKEROWY(RAW, 0, 1, 2, 3)
#undef MAKEROWY
// JPeg uses a variation on BT.601-1 full range
// y = 0.29900 * r + 0.58700 * g + 0.11400 * b
// u = -0.16874 * r - 0.33126 * g + 0.50000 * b + center
// v = 0.50000 * r - 0.41869 * g - 0.08131 * b + center
// BT.601 Mpeg range uses:
// b 0.1016 * 255 = 25.908 = 25
// g 0.5078 * 255 = 129.489 = 129
// r 0.2578 * 255 = 65.739 = 66
// JPeg 8 bit Y (not used):
// b 0.11400 * 256 = 29.184 = 29
// g 0.58700 * 256 = 150.272 = 150
// r 0.29900 * 256 = 76.544 = 77
// JPeg 7 bit Y:
// b 0.11400 * 128 = 14.592 = 15
// g 0.58700 * 128 = 75.136 = 75
// r 0.29900 * 128 = 38.272 = 38
// JPeg 8 bit U:
// b 0.50000 * 255 = 127.5 = 127
// g -0.33126 * 255 = -84.4713 = -84
// r -0.16874 * 255 = -43.0287 = -43
// JPeg 8 bit V:
// b -0.08131 * 255 = -20.73405 = -20
// g -0.41869 * 255 = -106.76595 = -107
// r 0.50000 * 255 = 127.5 = 127
static __inline int RGBToYJ(uint8 r, uint8 g, uint8 b) {
return (38 * r + 75 * g + 15 * b + 64) >> 7;
}
static __inline int RGBToUJ(uint8 r, uint8 g, uint8 b) {
return (127 * b - 84 * g - 43 * r + 0x8080) >> 8;
}
static __inline int RGBToVJ(uint8 r, uint8 g, uint8 b) {
return (127 * r - 107 * g - 20 * b + 0x8080) >> 8;
}
#define AVGB(a, b) (((a) + (b) + 1) >> 1)
#define MAKEROWYJ(NAME, R, G, B, BPP) \
void NAME ## ToYJRow_C(const uint8* src_argb0, uint8* dst_y, int width) { \
for (int x = 0; x < width; ++x) { \
dst_y[0] = RGBToYJ(src_argb0[R], src_argb0[G], src_argb0[B]); \
src_argb0 += BPP; \
dst_y += 1; \
} \
} \
void NAME ## ToUVJRow_C(const uint8* src_rgb0, int src_stride_rgb, \
uint8* dst_u, uint8* dst_v, int width) { \
const uint8* src_rgb1 = src_rgb0 + src_stride_rgb; \
for (int x = 0; x < width - 1; x += 2) { \
uint8 ab = AVGB(AVGB(src_rgb0[B], src_rgb1[B]), \
AVGB(src_rgb0[B + BPP], src_rgb1[B + BPP])); \
uint8 ag = AVGB(AVGB(src_rgb0[G], src_rgb1[G]), \
AVGB(src_rgb0[G + BPP], src_rgb1[G + BPP])); \
uint8 ar = AVGB(AVGB(src_rgb0[R], src_rgb1[R]), \
AVGB(src_rgb0[R + BPP], src_rgb1[R + BPP])); \
dst_u[0] = RGBToUJ(ar, ag, ab); \
dst_v[0] = RGBToVJ(ar, ag, ab); \
src_rgb0 += BPP * 2; \
src_rgb1 += BPP * 2; \
dst_u += 1; \
dst_v += 1; \
} \
if (width & 1) { \
uint8 ab = AVGB(src_rgb0[B], src_rgb1[B]); \
uint8 ag = AVGB(src_rgb0[G], src_rgb1[G]); \
uint8 ar = AVGB(src_rgb0[R], src_rgb1[R]); \
dst_u[0] = RGBToUJ(ar, ag, ab); \
dst_v[0] = RGBToVJ(ar, ag, ab); \
} \
}
MAKEROWYJ(ARGB, 2, 1, 0, 4)
#undef MAKEROWYJ
void RGB565ToYRow_C(const uint8* src_rgb565, uint8* dst_y, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_rgb565[0] & 0x1f;
uint8 g = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
uint8 r = src_rgb565[1] >> 3;
b = (b << 3) | (b >> 2);
g = (g << 2) | (g >> 4);
r = (r << 3) | (r >> 2);
dst_y[0] = RGBToY(r, g, b);
src_rgb565 += 2;
dst_y += 1;
}
}
void ARGB1555ToYRow_C(const uint8* src_argb1555, uint8* dst_y, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_argb1555[0] & 0x1f;
uint8 g = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
uint8 r = (src_argb1555[1] & 0x7c) >> 2;
b = (b << 3) | (b >> 2);
g = (g << 3) | (g >> 2);
r = (r << 3) | (r >> 2);
dst_y[0] = RGBToY(r, g, b);
src_argb1555 += 2;
dst_y += 1;
}
}
void ARGB4444ToYRow_C(const uint8* src_argb4444, uint8* dst_y, int width) {
for (int x = 0; x < width; ++x) {
uint8 b = src_argb4444[0] & 0x0f;
uint8 g = src_argb4444[0] >> 4;
uint8 r = src_argb4444[1] & 0x0f;
b = (b << 4) | b;
g = (g << 4) | g;
r = (r << 4) | r;
dst_y[0] = RGBToY(r, g, b);
src_argb4444 += 2;
dst_y += 1;
}
}
void RGB565ToUVRow_C(const uint8* src_rgb565, int src_stride_rgb565,
uint8* dst_u, uint8* dst_v, int width) {
const uint8* next_rgb565 = src_rgb565 + src_stride_rgb565;
for (int x = 0; x < width - 1; x += 2) {
uint8 b0 = src_rgb565[0] & 0x1f;
uint8 g0 = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
uint8 r0 = src_rgb565[1] >> 3;
uint8 b1 = src_rgb565[2] & 0x1f;
uint8 g1 = (src_rgb565[2] >> 5) | ((src_rgb565[3] & 0x07) << 3);
uint8 r1 = src_rgb565[3] >> 3;
uint8 b2 = next_rgb565[0] & 0x1f;
uint8 g2 = (next_rgb565[0] >> 5) | ((next_rgb565[1] & 0x07) << 3);
uint8 r2 = next_rgb565[1] >> 3;
uint8 b3 = next_rgb565[2] & 0x1f;
uint8 g3 = (next_rgb565[2] >> 5) | ((next_rgb565[3] & 0x07) << 3);
uint8 r3 = next_rgb565[3] >> 3;
uint8 b = (b0 + b1 + b2 + b3); // 565 * 4 = 787.
uint8 g = (g0 + g1 + g2 + g3);
uint8 r = (r0 + r1 + r2 + r3);
b = (b << 1) | (b >> 6); // 787 -> 888.
r = (r << 1) | (r >> 6);
dst_u[0] = RGBToU(r, g, b);
dst_v[0] = RGBToV(r, g, b);
src_rgb565 += 4;
next_rgb565 += 4;
dst_u += 1;
dst_v += 1;
}
if (width & 1) {
uint8 b0 = src_rgb565[0] & 0x1f;
uint8 g0 = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
uint8 r0 = src_rgb565[1] >> 3;
uint8 b2 = next_rgb565[0] & 0x1f;
uint8 g2 = (next_rgb565[0] >> 5) | ((next_rgb565[1] & 0x07) << 3);
uint8 r2 = next_rgb565[1] >> 3;
uint8 b = (b0 + b2); // 565 * 2 = 676.
uint8 g = (g0 + g2);
uint8 r = (r0 + r2);
b = (b << 2) | (b >> 4); // 676 -> 888
g = (g << 1) | (g >> 6);
r = (r << 2) | (r >> 4);
dst_u[0] = RGBToU(r, g, b);
dst_v[0] = RGBToV(r, g, b);
}
}
void ARGB1555ToUVRow_C(const uint8* src_argb1555, int src_stride_argb1555,
uint8* dst_u, uint8* dst_v, int width) {
const uint8* next_argb1555 = src_argb1555 + src_stride_argb1555;
for (int x = 0; x < width - 1; x += 2) {
uint8 b0 = src_argb1555[0] & 0x1f;
uint8 g0 = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
uint8 r0 = (src_argb1555[1] & 0x7c) >> 2;
uint8 b1 = src_argb1555[2] & 0x1f;
uint8 g1 = (src_argb1555[2] >> 5) | ((src_argb1555[3] & 0x03) << 3);
uint8 r1 = (src_argb1555[3] & 0x7c) >> 2;
uint8 b2 = next_argb1555[0] & 0x1f;
uint8 g2 = (next_argb1555[0] >> 5) | ((next_argb1555[1] & 0x03) << 3);
uint8 r2 = (next_argb1555[1] & 0x7c) >> 2;
uint8 b3 = next_argb1555[2] & 0x1f;
uint8 g3 = (next_argb1555[2] >> 5) | ((next_argb1555[3] & 0x03) << 3);
uint8 r3 = (next_argb1555[3] & 0x7c) >> 2;
uint8 b = (b0 + b1 + b2 + b3); // 555 * 4 = 777.
uint8 g = (g0 + g1 + g2 + g3);
uint8 r = (r0 + r1 + r2 + r3);
b = (b << 1) | (b >> 6); // 777 -> 888.
g = (g << 1) | (g >> 6);
r = (r << 1) | (r >> 6);
dst_u[0] = RGBToU(r, g, b);
dst_v[0] = RGBToV(r, g, b);
src_argb1555 += 4;
next_argb1555 += 4;
dst_u += 1;
dst_v += 1;
}
if (width & 1) {
uint8 b0 = src_argb1555[0] & 0x1f;
uint8 g0 = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
uint8 r0 = (src_argb1555[1] & 0x7c) >> 2;
uint8 b2 = next_argb1555[0] & 0x1f;
uint8 g2 = (next_argb1555[0] >> 5) | ((next_argb1555[1] & 0x03) << 3);
uint8 r2 = next_argb1555[1] >> 3;
uint8 b = (b0 + b2); // 555 * 2 = 666.
uint8 g = (g0 + g2);
uint8 r = (r0 + r2);
b = (b << 2) | (b >> 4); // 666 -> 888.
g = (g << 2) | (g >> 4);
r = (r << 2) | (r >> 4);
dst_u[0] = RGBToU(r, g, b);
dst_v[0] = RGBToV(r, g, b);
}
}
void ARGB4444ToUVRow_C(const uint8* src_argb4444, int src_stride_argb4444,
uint8* dst_u, uint8* dst_v, int width) {
const uint8* next_argb4444 = src_argb4444 + src_stride_argb4444;
for (int x = 0; x < width - 1; x += 2) {
uint8 b0 = src_argb4444[0] & 0x0f;
uint8 g0 = src_argb4444[0] >> 4;
uint8 r0 = src_argb4444[1] & 0x0f;
uint8 b1 = src_argb4444[2] & 0x0f;
uint8 g1 = src_argb4444[2] >> 4;
uint8 r1 = src_argb4444[3] & 0x0f;
uint8 b2 = next_argb4444[0] & 0x0f;
uint8 g2 = next_argb4444[0] >> 4;
uint8 r2 = next_argb4444[1] & 0x0f;
uint8 b3 = next_argb4444[2] & 0x0f;
uint8 g3 = next_argb4444[2] >> 4;
uint8 r3 = next_argb4444[3] & 0x0f;
uint8 b = (b0 + b1 + b2 + b3); // 444 * 4 = 666.
uint8 g = (g0 + g1 + g2 + g3);
uint8 r = (r0 + r1 + r2 + r3);
b = (b << 2) | (b >> 4); // 666 -> 888.
g = (g << 2) | (g >> 4);
r = (r << 2) | (r >> 4);
dst_u[0] = RGBToU(r, g, b);
dst_v[0] = RGBToV(r, g, b);
src_argb4444 += 4;
next_argb4444 += 4;
dst_u += 1;
dst_v += 1;
}
if (width & 1) {
uint8 b0 = src_argb4444[0] & 0x0f;
uint8 g0 = src_argb4444[0] >> 4;
uint8 r0 = src_argb4444[1] & 0x0f;
uint8 b2 = next_argb4444[0] & 0x0f;
uint8 g2 = next_argb4444[0] >> 4;
uint8 r2 = next_argb4444[1] & 0x0f;
uint8 b = (b0 + b2); // 444 * 2 = 555.
uint8 g = (g0 + g2);
uint8 r = (r0 + r2);
b = (b << 3) | (b >> 2); // 555 -> 888.
g = (g << 3) | (g >> 2);
r = (r << 3) | (r >> 2);
dst_u[0] = RGBToU(r, g, b);
dst_v[0] = RGBToV(r, g, b);
}
}
void ARGBToUV444Row_C(const uint8* src_argb,
uint8* dst_u, uint8* dst_v, int width) {
for (int x = 0; x < width; ++x) {
uint8 ab = src_argb[0];
uint8 ag = src_argb[1];
uint8 ar = src_argb[2];
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
src_argb += 4;
dst_u += 1;
dst_v += 1;
}
}
void ARGBToUV422Row_C(const uint8* src_argb,
uint8* dst_u, uint8* dst_v, int width) {
for (int x = 0; x < width - 1; x += 2) {
uint8 ab = (src_argb[0] + src_argb[4]) >> 1;
uint8 ag = (src_argb[1] + src_argb[5]) >> 1;
uint8 ar = (src_argb[2] + src_argb[6]) >> 1;
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
src_argb += 8;
dst_u += 1;
dst_v += 1;
}
if (width & 1) {
uint8 ab = src_argb[0];
uint8 ag = src_argb[1];
uint8 ar = src_argb[2];
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
}
}
void ARGBToUV411Row_C(const uint8* src_argb,
uint8* dst_u, uint8* dst_v, int width) {
for (int x = 0; x < width - 3; x += 4) {
uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8] + src_argb[12]) >> 2;
uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9] + src_argb[13]) >> 2;
uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10] + src_argb[14]) >> 2;
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
src_argb += 16;
dst_u += 1;
dst_v += 1;
}
if ((width & 3) == 3) {
uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8]) / 3;
uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9]) / 3;
uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10]) / 3;
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
} else if ((width & 3) == 2) {
uint8 ab = (src_argb[0] + src_argb[4]) >> 1;
uint8 ag = (src_argb[1] + src_argb[5]) >> 1;
uint8 ar = (src_argb[2] + src_argb[6]) >> 1;
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
} else if ((width & 3) == 1) {
uint8 ab = src_argb[0];
uint8 ag = src_argb[1];
uint8 ar = src_argb[2];
dst_u[0] = RGBToU(ar, ag, ab);
dst_v[0] = RGBToV(ar, ag, ab);
}
}
void ARGBGrayRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
for (int x = 0; x < width; ++x) {
uint8 y = RGBToYJ(src_argb[2], src_argb[1], src_argb[0]);
dst_argb[2] = dst_argb[1] = dst_argb[0] = y;
dst_argb[3] = src_argb[3];
dst_argb += 4;
src_argb += 4;
}
}
// Convert a row of image to Sepia tone.
void ARGBSepiaRow_C(uint8* dst_argb, int width) {
for (int x = 0; x < width; ++x) {
int b = dst_argb[0];
int g = dst_argb[1];
int r = dst_argb[2];
int sb = (b * 17 + g * 68 + r * 35) >> 7;
int sg = (b * 22 + g * 88 + r * 45) >> 7;
int sr = (b * 24 + g * 98 + r * 50) >> 7;
// b does not over flow. a is preserved from original.
dst_argb[0] = sb;
dst_argb[1] = clamp255(sg);
dst_argb[2] = clamp255(sr);
dst_argb += 4;
}
}
// Apply color matrix to a row of image. Matrix is signed.
void ARGBColorMatrixRow_C(uint8* dst_argb, const int8* matrix_argb, int width) {
for (int x = 0; x < width; ++x) {
int b = dst_argb[0];
int g = dst_argb[1];
int r = dst_argb[2];
int a = dst_argb[3];
int sb = (b * matrix_argb[0] + g * matrix_argb[1] +
r * matrix_argb[2] + a * matrix_argb[3]) >> 7;
int sg = (b * matrix_argb[4] + g * matrix_argb[5] +
r * matrix_argb[6] + a * matrix_argb[7]) >> 7;
int sr = (b * matrix_argb[8] + g * matrix_argb[9] +
r * matrix_argb[10] + a * matrix_argb[11]) >> 7;
dst_argb[0] = Clamp(sb);
dst_argb[1] = Clamp(sg);
dst_argb[2] = Clamp(sr);
dst_argb += 4;
}
}
// Apply color table to a row of image.
void ARGBColorTableRow_C(uint8* dst_argb, const uint8* table_argb, int width) {
for (int x = 0; x < width; ++x) {
int b = dst_argb[0];
int g = dst_argb[1];
int r = dst_argb[2];
int a = dst_argb[3];
dst_argb[0] = table_argb[b * 4 + 0];
dst_argb[1] = table_argb[g * 4 + 1];
dst_argb[2] = table_argb[r * 4 + 2];
dst_argb[3] = table_argb[a * 4 + 3];
dst_argb += 4;
}
}
void ARGBQuantizeRow_C(uint8* dst_argb, int scale, int interval_size,
int interval_offset, int width) {
for (int x = 0; x < width; ++x) {
int b = dst_argb[0];
int g = dst_argb[1];
int r = dst_argb[2];
dst_argb[0] = (b * scale >> 16) * interval_size + interval_offset;
dst_argb[1] = (g * scale >> 16) * interval_size + interval_offset;
dst_argb[2] = (r * scale >> 16) * interval_size + interval_offset;
dst_argb += 4;
}
}
#define REPEAT8(v) (v) | ((v) << 8)
#define SHADE(f, v) v * f >> 24
void ARGBShadeRow_C(const uint8* src_argb, uint8* dst_argb, int width,
uint32 value) {
const uint32 b_scale = REPEAT8(value & 0xff);
const uint32 g_scale = REPEAT8((value >> 8) & 0xff);
const uint32 r_scale = REPEAT8((value >> 16) & 0xff);
const uint32 a_scale = REPEAT8(value >> 24);
for (int i = 0; i < width; ++i) {
const uint32 b = REPEAT8(src_argb[0]);
const uint32 g = REPEAT8(src_argb[1]);
const uint32 r = REPEAT8(src_argb[2]);
const uint32 a = REPEAT8(src_argb[3]);
dst_argb[0] = SHADE(b, b_scale);
dst_argb[1] = SHADE(g, g_scale);
dst_argb[2] = SHADE(r, r_scale);
dst_argb[3] = SHADE(a, a_scale);
src_argb += 4;
dst_argb += 4;
}
}
#undef REPEAT8
#undef SHADE
#define REPEAT8(v) (v) | ((v) << 8)
#define SHADE(f, v) v * f >> 16
void ARGBMultiplyRow_C(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
for (int i = 0; i < width; ++i) {
const uint32 b = REPEAT8(src_argb0[0]);
const uint32 g = REPEAT8(src_argb0[1]);
const uint32 r = REPEAT8(src_argb0[2]);
const uint32 a = REPEAT8(src_argb0[3]);
const uint32 b_scale = src_argb1[0];
const uint32 g_scale = src_argb1[1];
const uint32 r_scale = src_argb1[2];
const uint32 a_scale = src_argb1[3];
dst_argb[0] = SHADE(b, b_scale);
dst_argb[1] = SHADE(g, g_scale);
dst_argb[2] = SHADE(r, r_scale);
dst_argb[3] = SHADE(a, a_scale);
src_argb0 += 4;
src_argb1 += 4;
dst_argb += 4;
}
}
#undef REPEAT8
#undef SHADE
#define SHADE(f, v) clamp255(v + f)
void ARGBAddRow_C(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
for (int i = 0; i < width; ++i) {
const int b = src_argb0[0];
const int g = src_argb0[1];
const int r = src_argb0[2];
const int a = src_argb0[3];
const int b_add = src_argb1[0];
const int g_add = src_argb1[1];
const int r_add = src_argb1[2];
const int a_add = src_argb1[3];
dst_argb[0] = SHADE(b, b_add);
dst_argb[1] = SHADE(g, g_add);
dst_argb[2] = SHADE(r, r_add);
dst_argb[3] = SHADE(a, a_add);
src_argb0 += 4;
src_argb1 += 4;
dst_argb += 4;
}
}
#undef SHADE
#define SHADE(f, v) clamp0(f - v)
void ARGBSubtractRow_C(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
for (int i = 0; i < width; ++i) {
const int b = src_argb0[0];
const int g = src_argb0[1];
const int r = src_argb0[2];
const int a = src_argb0[3];
const int b_sub = src_argb1[0];
const int g_sub = src_argb1[1];
const int r_sub = src_argb1[2];
const int a_sub = src_argb1[3];
dst_argb[0] = SHADE(b, b_sub);
dst_argb[1] = SHADE(g, g_sub);
dst_argb[2] = SHADE(r, r_sub);
dst_argb[3] = SHADE(a, a_sub);
src_argb0 += 4;
src_argb1 += 4;
dst_argb += 4;
}
}
#undef SHADE
// Sobel functions which mimics SSSE3.
void SobelXRow_C(const uint8* src_y0, const uint8* src_y1, const uint8* src_y2,
uint8* dst_sobelx, int width) {
for (int i = 0; i < width; ++i) {
int a = src_y0[i];
int b = src_y1[i];
int c = src_y2[i];
int a_sub = src_y0[i + 2];
int b_sub = src_y1[i + 2];
int c_sub = src_y2[i + 2];
int a_diff = a - a_sub;
int b_diff = b - b_sub;
int c_diff = c - c_sub;
int sobel = Abs(a_diff + b_diff * 2 + c_diff);
dst_sobelx[i] = static_cast<uint8>(clamp255(sobel));
}
}
void SobelYRow_C(const uint8* src_y0, const uint8* src_y1,
uint8* dst_sobely, int width) {
for (int i = 0; i < width; ++i) {
int a = src_y0[i + 0];
int b = src_y0[i + 1];
int c = src_y0[i + 2];
int a_sub = src_y1[i + 0];
int b_sub = src_y1[i + 1];
int c_sub = src_y1[i + 2];
int a_diff = a - a_sub;
int b_diff = b - b_sub;
int c_diff = c - c_sub;
int sobel = Abs(a_diff + b_diff * 2 + c_diff);
dst_sobely[i] = static_cast<uint8>(clamp255(sobel));
}
}
void SobelRow_C(const uint8* src_sobelx, const uint8* src_sobely,
uint8* dst_argb, int width) {
for (int i = 0; i < width; ++i) {
int r = src_sobelx[i];
int b = src_sobely[i];
int s = clamp255(r + b);
dst_argb[0] = static_cast<uint8>(s);
dst_argb[1] = static_cast<uint8>(s);
dst_argb[2] = static_cast<uint8>(s);
dst_argb[3] = static_cast<uint8>(255u);
dst_argb += 4;
}
}
void SobelXYRow_C(const uint8* src_sobelx, const uint8* src_sobely,
uint8* dst_argb, int width) {
for (int i = 0; i < width; ++i) {
int r = src_sobelx[i];
int b = src_sobely[i];
int g = clamp255(r + b);
dst_argb[0] = static_cast<uint8>(b);
dst_argb[1] = static_cast<uint8>(g);
dst_argb[2] = static_cast<uint8>(r);
dst_argb[3] = static_cast<uint8>(255u);
dst_argb += 4;
}
}
void I400ToARGBRow_C(const uint8* src_y, uint8* dst_argb, int width) {
// Copy a Y to RGB.
for (int x = 0; x < width; ++x) {
uint8 y = src_y[0];
dst_argb[2] = dst_argb[1] = dst_argb[0] = y;
dst_argb[3] = 255u;
dst_argb += 4;
++src_y;
}
}
// C reference code that mimics the YUV assembly.
#define YG 74 /* static_cast<int8>(1.164 * 64 + 0.5) */
#define UB 127 /* min(63,static_cast<int8>(2.018 * 64)) */
#define UG -25 /* static_cast<int8>(-0.391 * 64 - 0.5) */
#define UR 0
#define VB 0
#define VG -52 /* static_cast<int8>(-0.813 * 64 - 0.5) */
#define VR 102 /* static_cast<int8>(1.596 * 64 + 0.5) */
// Bias
#define BB UB * 128 + VB * 128
#define BG UG * 128 + VG * 128
#define BR UR * 128 + VR * 128
static __inline void YuvPixel(uint8 y, uint8 u, uint8 v,
uint8* b, uint8* g, uint8* r) {
int32 y1 = (static_cast<int32>(y) - 16) * YG;
*b = Clamp(static_cast<int32>((u * UB + v * VB) - (BB) + y1) >> 6);
*g = Clamp(static_cast<int32>((u * UG + v * VG) - (BG) + y1) >> 6);
*r = Clamp(static_cast<int32>((u * UR + v * VR) - (BR) + y1) >> 6);
}
#if !defined(LIBYUV_DISABLE_NEON) && \
(defined(__ARM_NEON__) || defined(LIBYUV_NEON))
// C mimic assembly.
// TODO(fbarchard): Remove subsampling from Neon.
void I444ToARGBRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
uint8 u = (src_u[0] + src_u[1] + 1) >> 1;
uint8 v = (src_v[0] + src_v[1] + 1) >> 1;
YuvPixel(src_y[0], u, v, rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], u, v, rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_y += 2;
src_u += 2;
src_v += 2;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
}
}
#else
void I444ToARGBRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width; ++x) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
src_y += 1;
src_u += 1;
src_v += 1;
rgb_buf += 4; // Advance 1 pixel.
}
}
#endif
// Also used for 420
void I422ToARGBRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_y += 2;
src_u += 1;
src_v += 1;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void I422ToRGB24Row_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 3, rgb_buf + 4, rgb_buf + 5);
src_y += 2;
src_u += 1;
src_v += 1;
rgb_buf += 6; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
}
}
void I422ToRAWRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 5, rgb_buf + 4, rgb_buf + 3);
src_y += 2;
src_u += 1;
src_v += 1;
rgb_buf += 6; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
}
}
void I422ToARGB4444Row_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb4444,
int width) {
uint8 b0;
uint8 g0;
uint8 r0;
uint8 b1;
uint8 g1;
uint8 r1;
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
YuvPixel(src_y[1], src_u[0], src_v[0], &b1, &g1, &r1);
b0 = b0 >> 4;
g0 = g0 >> 4;
r0 = r0 >> 4;
b1 = b1 >> 4;
g1 = g1 >> 4;
r1 = r1 >> 4;
*reinterpret_cast<uint32*>(dst_argb4444) = b0 | (g0 << 4) | (r0 << 8) |
(b1 << 16) | (g1 << 20) | (r1 << 24) | 0xf000f000;
src_y += 2;
src_u += 1;
src_v += 1;
dst_argb4444 += 4; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
b0 = b0 >> 4;
g0 = g0 >> 4;
r0 = r0 >> 4;
*reinterpret_cast<uint16*>(dst_argb4444) = b0 | (g0 << 4) | (r0 << 8) |
0xf000;
}
}
void I422ToARGB1555Row_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb1555,
int width) {
uint8 b0;
uint8 g0;
uint8 r0;
uint8 b1;
uint8 g1;
uint8 r1;
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
YuvPixel(src_y[1], src_u[0], src_v[0], &b1, &g1, &r1);
b0 = b0 >> 3;
g0 = g0 >> 3;
r0 = r0 >> 3;
b1 = b1 >> 3;
g1 = g1 >> 3;
r1 = r1 >> 3;
*reinterpret_cast<uint32*>(dst_argb1555) = b0 | (g0 << 5) | (r0 << 10) |
(b1 << 16) | (g1 << 21) | (r1 << 26) | 0x80008000;
src_y += 2;
src_u += 1;
src_v += 1;
dst_argb1555 += 4; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
b0 = b0 >> 3;
g0 = g0 >> 3;
r0 = r0 >> 3;
*reinterpret_cast<uint16*>(dst_argb1555) = b0 | (g0 << 5) | (r0 << 10) |
0x8000;
}
}
void I422ToRGB565Row_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_rgb565,
int width) {
uint8 b0;
uint8 g0;
uint8 r0;
uint8 b1;
uint8 g1;
uint8 r1;
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
YuvPixel(src_y[1], src_u[0], src_v[0], &b1, &g1, &r1);
b0 = b0 >> 3;
g0 = g0 >> 2;
r0 = r0 >> 3;
b1 = b1 >> 3;
g1 = g1 >> 2;
r1 = r1 >> 3;
*reinterpret_cast<uint32*>(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11) |
(b1 << 16) | (g1 << 21) | (r1 << 27);
src_y += 2;
src_u += 1;
src_v += 1;
dst_rgb565 += 4; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
b0 = b0 >> 3;
g0 = g0 >> 2;
r0 = r0 >> 3;
*reinterpret_cast<uint16*>(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11);
}
}
void I411ToARGBRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 3; x += 4) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
YuvPixel(src_y[2], src_u[0], src_v[0],
rgb_buf + 8, rgb_buf + 9, rgb_buf + 10);
rgb_buf[11] = 255;
YuvPixel(src_y[3], src_u[0], src_v[0],
rgb_buf + 12, rgb_buf + 13, rgb_buf + 14);
rgb_buf[15] = 255;
src_y += 4;
src_u += 1;
src_v += 1;
rgb_buf += 16; // Advance 4 pixels.
}
if (width & 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_y += 2;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void NV12ToARGBRow_C(const uint8* src_y,
const uint8* usrc_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], usrc_v[0], usrc_v[1],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], usrc_v[0], usrc_v[1],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_y += 2;
usrc_v += 2;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], usrc_v[0], usrc_v[1],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void NV21ToARGBRow_C(const uint8* src_y,
const uint8* src_vu,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_vu[1], src_vu[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], src_vu[1], src_vu[0],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_y += 2;
src_vu += 2;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_vu[1], src_vu[0],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void NV12ToRGB565Row_C(const uint8* src_y,
const uint8* usrc_v,
uint8* dst_rgb565,
int width) {
uint8 b0;
uint8 g0;
uint8 r0;
uint8 b1;
uint8 g1;
uint8 r1;
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], usrc_v[0], usrc_v[1], &b0, &g0, &r0);
YuvPixel(src_y[1], usrc_v[0], usrc_v[1], &b1, &g1, &r1);
b0 = b0 >> 3;
g0 = g0 >> 2;
r0 = r0 >> 3;
b1 = b1 >> 3;
g1 = g1 >> 2;
r1 = r1 >> 3;
*reinterpret_cast<uint32*>(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11) |
(b1 << 16) | (g1 << 21) | (r1 << 27);
src_y += 2;
usrc_v += 2;
dst_rgb565 += 4; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], usrc_v[0], usrc_v[1], &b0, &g0, &r0);
b0 = b0 >> 3;
g0 = g0 >> 2;
r0 = r0 >> 3;
*reinterpret_cast<uint16*>(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11);
}
}
void NV21ToRGB565Row_C(const uint8* src_y,
const uint8* vsrc_u,
uint8* dst_rgb565,
int width) {
uint8 b0;
uint8 g0;
uint8 r0;
uint8 b1;
uint8 g1;
uint8 r1;
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], vsrc_u[1], vsrc_u[0], &b0, &g0, &r0);
YuvPixel(src_y[1], vsrc_u[1], vsrc_u[0], &b1, &g1, &r1);
b0 = b0 >> 3;
g0 = g0 >> 2;
r0 = r0 >> 3;
b1 = b1 >> 3;
g1 = g1 >> 2;
r1 = r1 >> 3;
*reinterpret_cast<uint32*>(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11) |
(b1 << 16) | (g1 << 21) | (r1 << 27);
src_y += 2;
vsrc_u += 2;
dst_rgb565 += 4; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], vsrc_u[1], vsrc_u[0], &b0, &g0, &r0);
b0 = b0 >> 3;
g0 = g0 >> 2;
r0 = r0 >> 3;
*reinterpret_cast<uint16*>(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11);
}
}
void YUY2ToARGBRow_C(const uint8* src_yuy2,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_yuy2[0], src_yuy2[1], src_yuy2[3],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_yuy2[2], src_yuy2[1], src_yuy2[3],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_yuy2 += 4;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_yuy2[0], src_yuy2[1], src_yuy2[3],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void UYVYToARGBRow_C(const uint8* src_uyvy,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_uyvy[1], src_uyvy[0], src_uyvy[2],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_uyvy[3], src_uyvy[0], src_uyvy[2],
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_uyvy += 4;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_uyvy[1], src_uyvy[0], src_uyvy[2],
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void I422ToBGRARow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 3, rgb_buf + 2, rgb_buf + 1);
rgb_buf[0] = 255;
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 7, rgb_buf + 6, rgb_buf + 5);
rgb_buf[4] = 255;
src_y += 2;
src_u += 1;
src_v += 1;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 3, rgb_buf + 2, rgb_buf + 1);
rgb_buf[0] = 255;
}
}
void I422ToABGRRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
rgb_buf[3] = 255;
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 6, rgb_buf + 5, rgb_buf + 4);
rgb_buf[7] = 255;
src_y += 2;
src_u += 1;
src_v += 1;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
rgb_buf[3] = 255;
}
}
void I422ToRGBARow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 1, rgb_buf + 2, rgb_buf + 3);
rgb_buf[0] = 255;
YuvPixel(src_y[1], src_u[0], src_v[0],
rgb_buf + 5, rgb_buf + 6, rgb_buf + 7);
rgb_buf[4] = 255;
src_y += 2;
src_u += 1;
src_v += 1;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], src_u[0], src_v[0],
rgb_buf + 1, rgb_buf + 2, rgb_buf + 3);
rgb_buf[0] = 255;
}
}
void YToARGBRow_C(const uint8* src_y, uint8* rgb_buf, int width) {
for (int x = 0; x < width - 1; x += 2) {
YuvPixel(src_y[0], 128, 128,
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
YuvPixel(src_y[1], 128, 128,
rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
rgb_buf[7] = 255;
src_y += 2;
rgb_buf += 8; // Advance 2 pixels.
}
if (width & 1) {
YuvPixel(src_y[0], 128, 128,
rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
rgb_buf[3] = 255;
}
}
void MirrorRow_C(const uint8* src, uint8* dst, int width) {
src += width - 1;
for (int x = 0; x < width - 1; x += 2) {
dst[x] = src[0];
dst[x + 1] = src[-1];
src -= 2;
}
if (width & 1) {
dst[width - 1] = src[0];
}
}
void MirrorUVRow_C(const uint8* src_uv, uint8* dst_u, uint8* dst_v, int width) {
src_uv += (width - 1) << 1;
for (int x = 0; x < width - 1; x += 2) {
dst_u[x] = src_uv[0];
dst_u[x + 1] = src_uv[-2];
dst_v[x] = src_uv[1];
dst_v[x + 1] = src_uv[-2 + 1];
src_uv -= 4;
}
if (width & 1) {
dst_u[width - 1] = src_uv[0];
dst_v[width - 1] = src_uv[1];
}
}
void ARGBMirrorRow_C(const uint8* src, uint8* dst, int width) {
const uint32* src32 = reinterpret_cast<const uint32*>(src);
uint32* dst32 = reinterpret_cast<uint32*>(dst);
src32 += width - 1;
for (int x = 0; x < width - 1; x += 2) {
dst32[x] = src32[0];
dst32[x + 1] = src32[-1];
src32 -= 2;
}
if (width & 1) {
dst32[width - 1] = src32[0];
}
}
void SplitUVRow_C(const uint8* src_uv, uint8* dst_u, uint8* dst_v, int width) {
for (int x = 0; x < width - 1; x += 2) {
dst_u[x] = src_uv[0];
dst_u[x + 1] = src_uv[2];
dst_v[x] = src_uv[1];
dst_v[x + 1] = src_uv[3];
src_uv += 4;
}
if (width & 1) {
dst_u[width - 1] = src_uv[0];
dst_v[width - 1] = src_uv[1];
}
}
void MergeUVRow_C(const uint8* src_u, const uint8* src_v, uint8* dst_uv,
int width) {
for (int x = 0; x < width - 1; x += 2) {
dst_uv[0] = src_u[x];
dst_uv[1] = src_v[x];
dst_uv[2] = src_u[x + 1];
dst_uv[3] = src_v[x + 1];
dst_uv += 4;
}
if (width & 1) {
dst_uv[0] = src_u[width - 1];
dst_uv[1] = src_v[width - 1];
}
}
void CopyRow_C(const uint8* src, uint8* dst, int count) {
memcpy(dst, src, count);
}
void SetRow_C(uint8* dst, uint32 v8, int count) {
#ifdef _MSC_VER
// VC will generate rep stosb.
for (int x = 0; x < count; ++x) {
dst[x] = v8;
}
#else
memset(dst, v8, count);
#endif
}
void ARGBSetRows_C(uint8* dst, uint32 v32, int width,
int dst_stride, int height) {
for (int y = 0; y < height; ++y) {
uint32* d = reinterpret_cast<uint32*>(dst);
for (int x = 0; x < width; ++x) {
d[x] = v32;
}
dst += dst_stride;
}
}
// Filter 2 rows of YUY2 UV's (422) into U and V (420).
void YUY2ToUVRow_C(const uint8* src_yuy2, int src_stride_yuy2,
uint8* dst_u, uint8* dst_v, int width) {
// Output a row of UV values, filtering 2 rows of YUY2.
for (int x = 0; x < width; x += 2) {
dst_u[0] = (src_yuy2[1] + src_yuy2[src_stride_yuy2 + 1] + 1) >> 1;
dst_v[0] = (src_yuy2[3] + src_yuy2[src_stride_yuy2 + 3] + 1) >> 1;
src_yuy2 += 4;
dst_u += 1;
dst_v += 1;
}
}
// Copy row of YUY2 UV's (422) into U and V (422).
void YUY2ToUV422Row_C(const uint8* src_yuy2,
uint8* dst_u, uint8* dst_v, int width) {
// Output a row of UV values.
for (int x = 0; x < width; x += 2) {
dst_u[0] = src_yuy2[1];
dst_v[0] = src_yuy2[3];
src_yuy2 += 4;
dst_u += 1;
dst_v += 1;
}
}
// Copy row of YUY2 Y's (422) into Y (420/422).
void YUY2ToYRow_C(const uint8* src_yuy2, uint8* dst_y, int width) {
// Output a row of Y values.
for (int x = 0; x < width - 1; x += 2) {
dst_y[x] = src_yuy2[0];
dst_y[x + 1] = src_yuy2[2];
src_yuy2 += 4;
}
if (width & 1) {
dst_y[width - 1] = src_yuy2[0];
}
}
// Filter 2 rows of UYVY UV's (422) into U and V (420).
void UYVYToUVRow_C(const uint8* src_uyvy, int src_stride_uyvy,
uint8* dst_u, uint8* dst_v, int width) {
// Output a row of UV values.
for (int x = 0; x < width; x += 2) {
dst_u[0] = (src_uyvy[0] + src_uyvy[src_stride_uyvy + 0] + 1) >> 1;
dst_v[0] = (src_uyvy[2] + src_uyvy[src_stride_uyvy + 2] + 1) >> 1;
src_uyvy += 4;
dst_u += 1;
dst_v += 1;
}
}
// Copy row of UYVY UV's (422) into U and V (422).
void UYVYToUV422Row_C(const uint8* src_uyvy,
uint8* dst_u, uint8* dst_v, int width) {
// Output a row of UV values.
for (int x = 0; x < width; x += 2) {
dst_u[0] = src_uyvy[0];
dst_v[0] = src_uyvy[2];
src_uyvy += 4;
dst_u += 1;
dst_v += 1;
}
}
// Copy row of UYVY Y's (422) into Y (420/422).
void UYVYToYRow_C(const uint8* src_uyvy, uint8* dst_y, int width) {
// Output a row of Y values.
for (int x = 0; x < width - 1; x += 2) {
dst_y[x] = src_uyvy[1];
dst_y[x + 1] = src_uyvy[3];
src_uyvy += 4;
}
if (width & 1) {
dst_y[width - 1] = src_uyvy[1];
}
}
#define BLEND(f, b, a) (((256 - a) * b) >> 8) + f
// Blend src_argb0 over src_argb1 and store to dst_argb.
// dst_argb may be src_argb0 or src_argb1.
// This code mimics the SSSE3 version for better testability.
void ARGBBlendRow_C(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width) {
for (int x = 0; x < width - 1; x += 2) {
uint32 fb = src_argb0[0];
uint32 fg = src_argb0[1];
uint32 fr = src_argb0[2];
uint32 a = src_argb0[3];
uint32 bb = src_argb1[0];
uint32 bg = src_argb1[1];
uint32 br = src_argb1[2];
dst_argb[0] = BLEND(fb, bb, a);
dst_argb[1] = BLEND(fg, bg, a);
dst_argb[2] = BLEND(fr, br, a);
dst_argb[3] = 255u;
fb = src_argb0[4 + 0];
fg = src_argb0[4 + 1];
fr = src_argb0[4 + 2];
a = src_argb0[4 + 3];
bb = src_argb1[4 + 0];
bg = src_argb1[4 + 1];
br = src_argb1[4 + 2];
dst_argb[4 + 0] = BLEND(fb, bb, a);
dst_argb[4 + 1] = BLEND(fg, bg, a);
dst_argb[4 + 2] = BLEND(fr, br, a);
dst_argb[4 + 3] = 255u;
src_argb0 += 8;
src_argb1 += 8;
dst_argb += 8;
}
if (width & 1) {
uint32 fb = src_argb0[0];
uint32 fg = src_argb0[1];
uint32 fr = src_argb0[2];
uint32 a = src_argb0[3];
uint32 bb = src_argb1[0];
uint32 bg = src_argb1[1];
uint32 br = src_argb1[2];
dst_argb[0] = BLEND(fb, bb, a);
dst_argb[1] = BLEND(fg, bg, a);
dst_argb[2] = BLEND(fr, br, a);
dst_argb[3] = 255u;
}
}
#undef BLEND
#define ATTENUATE(f, a) (a | (a << 8)) * (f | (f << 8)) >> 24
// Multiply source RGB by alpha and store to destination.
// This code mimics the SSSE3 version for better testability.
void ARGBAttenuateRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
for (int i = 0; i < width - 1; i += 2) {
uint32 b = src_argb[0];
uint32 g = src_argb[1];
uint32 r = src_argb[2];
uint32 a = src_argb[3];
dst_argb[0] = ATTENUATE(b, a);
dst_argb[1] = ATTENUATE(g, a);
dst_argb[2] = ATTENUATE(r, a);
dst_argb[3] = a;
b = src_argb[4];
g = src_argb[5];
r = src_argb[6];
a = src_argb[7];
dst_argb[4] = ATTENUATE(b, a);
dst_argb[5] = ATTENUATE(g, a);
dst_argb[6] = ATTENUATE(r, a);
dst_argb[7] = a;
src_argb += 8;
dst_argb += 8;
}
if (width & 1) {
const uint32 b = src_argb[0];
const uint32 g = src_argb[1];
const uint32 r = src_argb[2];
const uint32 a = src_argb[3];
dst_argb[0] = ATTENUATE(b, a);
dst_argb[1] = ATTENUATE(g, a);
dst_argb[2] = ATTENUATE(r, a);
dst_argb[3] = a;
}
}
#undef ATTENUATE
// Divide source RGB by alpha and store to destination.
// b = (b * 255 + (a / 2)) / a;
// g = (g * 255 + (a / 2)) / a;
// r = (r * 255 + (a / 2)) / a;
// Reciprocal method is off by 1 on some values. ie 125
// 8.8 fixed point inverse table with 1.0 in upper short and 1 / a in lower.
#define T(a) 0x01000000 + (0x10000 / a)
uint32 fixed_invtbl8[256] = {
0x01000000, 0x0100ffff, T(0x02), T(0x03), T(0x04), T(0x05), T(0x06), T(0x07),
T(0x08), T(0x09), T(0x0a), T(0x0b), T(0x0c), T(0x0d), T(0x0e), T(0x0f),
T(0x10), T(0x11), T(0x12), T(0x13), T(0x14), T(0x15), T(0x16), T(0x17),
T(0x18), T(0x19), T(0x1a), T(0x1b), T(0x1c), T(0x1d), T(0x1e), T(0x1f),
T(0x20), T(0x21), T(0x22), T(0x23), T(0x24), T(0x25), T(0x26), T(0x27),
T(0x28), T(0x29), T(0x2a), T(0x2b), T(0x2c), T(0x2d), T(0x2e), T(0x2f),
T(0x30), T(0x31), T(0x32), T(0x33), T(0x34), T(0x35), T(0x36), T(0x37),
T(0x38), T(0x39), T(0x3a), T(0x3b), T(0x3c), T(0x3d), T(0x3e), T(0x3f),
T(0x40), T(0x41), T(0x42), T(0x43), T(0x44), T(0x45), T(0x46), T(0x47),
T(0x48), T(0x49), T(0x4a), T(0x4b), T(0x4c), T(0x4d), T(0x4e), T(0x4f),
T(0x50), T(0x51), T(0x52), T(0x53), T(0x54), T(0x55), T(0x56), T(0x57),
T(0x58), T(0x59), T(0x5a), T(0x5b), T(0x5c), T(0x5d), T(0x5e), T(0x5f),
T(0x60), T(0x61), T(0x62), T(0x63), T(0x64), T(0x65), T(0x66), T(0x67),
T(0x68), T(0x69), T(0x6a), T(0x6b), T(0x6c), T(0x6d), T(0x6e), T(0x6f),
T(0x70), T(0x71), T(0x72), T(0x73), T(0x74), T(0x75), T(0x76), T(0x77),
T(0x78), T(0x79), T(0x7a), T(0x7b), T(0x7c), T(0x7d), T(0x7e), T(0x7f),
T(0x80), T(0x81), T(0x82), T(0x83), T(0x84), T(0x85), T(0x86), T(0x87),
T(0x88), T(0x89), T(0x8a), T(0x8b), T(0x8c), T(0x8d), T(0x8e), T(0x8f),
T(0x90), T(0x91), T(0x92), T(0x93), T(0x94), T(0x95), T(0x96), T(0x97),
T(0x98), T(0x99), T(0x9a), T(0x9b), T(0x9c), T(0x9d), T(0x9e), T(0x9f),
T(0xa0), T(0xa1), T(0xa2), T(0xa3), T(0xa4), T(0xa5), T(0xa6), T(0xa7),
T(0xa8), T(0xa9), T(0xaa), T(0xab), T(0xac), T(0xad), T(0xae), T(0xaf),
T(0xb0), T(0xb1), T(0xb2), T(0xb3), T(0xb4), T(0xb5), T(0xb6), T(0xb7),
T(0xb8), T(0xb9), T(0xba), T(0xbb), T(0xbc), T(0xbd), T(0xbe), T(0xbf),
T(0xc0), T(0xc1), T(0xc2), T(0xc3), T(0xc4), T(0xc5), T(0xc6), T(0xc7),
T(0xc8), T(0xc9), T(0xca), T(0xcb), T(0xcc), T(0xcd), T(0xce), T(0xcf),
T(0xd0), T(0xd1), T(0xd2), T(0xd3), T(0xd4), T(0xd5), T(0xd6), T(0xd7),
T(0xd8), T(0xd9), T(0xda), T(0xdb), T(0xdc), T(0xdd), T(0xde), T(0xdf),
T(0xe0), T(0xe1), T(0xe2), T(0xe3), T(0xe4), T(0xe5), T(0xe6), T(0xe7),
T(0xe8), T(0xe9), T(0xea), T(0xeb), T(0xec), T(0xed), T(0xee), T(0xef),
T(0xf0), T(0xf1), T(0xf2), T(0xf3), T(0xf4), T(0xf5), T(0xf6), T(0xf7),
T(0xf8), T(0xf9), T(0xfa), T(0xfb), T(0xfc), T(0xfd), T(0xfe), 0x01000100 };
#undef T
void ARGBUnattenuateRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
for (int i = 0; i < width; ++i) {
uint32 b = src_argb[0];
uint32 g = src_argb[1];
uint32 r = src_argb[2];
const uint32 a = src_argb[3];
const uint32 ia = fixed_invtbl8[a] & 0xffff; // 8.8 fixed point
b = (b * ia) >> 8;
g = (g * ia) >> 8;
r = (r * ia) >> 8;
// Clamping should not be necessary but is free in assembly.
dst_argb[0] = clamp255(b);
dst_argb[1] = clamp255(g);
dst_argb[2] = clamp255(r);
dst_argb[3] = a;
src_argb += 4;
dst_argb += 4;
}
}
void ComputeCumulativeSumRow_C(const uint8* row, int32* cumsum,
const int32* previous_cumsum, int width) {
int32 row_sum[4] = {0, 0, 0, 0};
for (int x = 0; x < width; ++x) {
row_sum[0] += row[x * 4 + 0];
row_sum[1] += row[x * 4 + 1];
row_sum[2] += row[x * 4 + 2];
row_sum[3] += row[x * 4 + 3];
cumsum[x * 4 + 0] = row_sum[0] + previous_cumsum[x * 4 + 0];
cumsum[x * 4 + 1] = row_sum[1] + previous_cumsum[x * 4 + 1];
cumsum[x * 4 + 2] = row_sum[2] + previous_cumsum[x * 4 + 2];
cumsum[x * 4 + 3] = row_sum[3] + previous_cumsum[x * 4 + 3];
}
}
void CumulativeSumToAverageRow_C(const int32* tl, const int32* bl,
int w, int area, uint8* dst, int count) {
float ooa = 1.0f / area;
for (int i = 0; i < count; ++i) {
dst[0] = static_cast<uint8>((bl[w + 0] + tl[0] - bl[0] - tl[w + 0]) * ooa);
dst[1] = static_cast<uint8>((bl[w + 1] + tl[1] - bl[1] - tl[w + 1]) * ooa);
dst[2] = static_cast<uint8>((bl[w + 2] + tl[2] - bl[2] - tl[w + 2]) * ooa);
dst[3] = static_cast<uint8>((bl[w + 3] + tl[3] - bl[3] - tl[w + 3]) * ooa);
dst += 4;
tl += 4;
bl += 4;
}
}
// Copy pixels from rotated source to destination row with a slope.
LIBYUV_API
void ARGBAffineRow_C(const uint8* src_argb, int src_argb_stride,
uint8* dst_argb, const float* uv_dudv, int width) {
// Render a row of pixels from source into a buffer.
float uv[2];
uv[0] = uv_dudv[0];
uv[1] = uv_dudv[1];
for (int i = 0; i < width; ++i) {
int x = static_cast<int>(uv[0]);
int y = static_cast<int>(uv[1]);
*reinterpret_cast<uint32*>(dst_argb) =
*reinterpret_cast<const uint32*>(src_argb + y * src_argb_stride +
x * 4);
dst_argb += 4;
uv[0] += uv_dudv[2];
uv[1] += uv_dudv[3];
}
}
// C version 2x2 -> 2x1.
void InterpolateRow_C(uint8* dst_ptr, const uint8* src_ptr,
ptrdiff_t src_stride,
int width, int source_y_fraction) {
int y1_fraction = source_y_fraction;
int y0_fraction = 256 - y1_fraction;
const uint8* src_ptr1 = src_ptr + src_stride;
for (int x = 0; x < width - 1; x += 2) {
dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
dst_ptr[1] = (src_ptr[1] * y0_fraction + src_ptr1[1] * y1_fraction) >> 8;
src_ptr += 2;
src_ptr1 += 2;
dst_ptr += 2;
}
if (width & 1) {
dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
}
}
// Blend 2 rows into 1 for conversions such as I422ToI420.
void HalfRow_C(const uint8* src_uv, int src_uv_stride,
uint8* dst_uv, int pix) {
for (int x = 0; x < pix; ++x) {
dst_uv[x] = (src_uv[x] + src_uv[src_uv_stride + x] + 1) >> 1;
}
}
// Select 2 channels from ARGB on alternating pixels. e.g. BGBGBGBG
void ARGBToBayerRow_C(const uint8* src_argb,
uint8* dst_bayer, uint32 selector, int pix) {
int index0 = selector & 0xff;
int index1 = (selector >> 8) & 0xff;
// Copy a row of Bayer.
for (int x = 0; x < pix - 1; x += 2) {
dst_bayer[0] = src_argb[index0];
dst_bayer[1] = src_argb[index1];
src_argb += 8;
dst_bayer += 2;
}
if (pix & 1) {
dst_bayer[0] = src_argb[index0];
}
}
// Use first 4 shuffler values to reorder ARGB channels.
void ARGBShuffleRow_C(const uint8* src_argb, uint8* dst_argb,
const uint8* shuffler, int pix) {
int index0 = shuffler[0];
int index1 = shuffler[1];
int index2 = shuffler[2];
int index3 = shuffler[3];
// Shuffle a row of ARGB.
for (int x = 0; x < pix; ++x) {
// To support in-place conversion.
uint8 b = src_argb[index0];
uint8 g = src_argb[index1];
uint8 r = src_argb[index2];
uint8 a = src_argb[index3];
dst_argb[0] = b;
dst_argb[1] = g;
dst_argb[2] = r;
dst_argb[3] = a;
src_argb += 4;
dst_argb += 4;
}
}
void I422ToYUY2Row_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_frame, int width) {
for (int x = 0; x < width - 1; x += 2) {
dst_frame[0] = src_y[0];
dst_frame[1] = src_u[0];
dst_frame[2] = src_y[1];
dst_frame[3] = src_v[0];
dst_frame += 4;
src_y += 2;
src_u += 1;
src_v += 1;
}
if (width & 1) {
dst_frame[0] = src_y[0];
dst_frame[1] = src_u[0];
dst_frame[2] = src_y[0]; // duplicate last y
dst_frame[3] = src_v[0];
}
}
void I422ToUYVYRow_C(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_frame, int width) {
for (int x = 0; x < width - 1; x += 2) {
dst_frame[0] = src_u[0];
dst_frame[1] = src_y[0];
dst_frame[2] = src_v[0];
dst_frame[3] = src_y[1];
dst_frame += 4;
src_y += 2;
src_u += 1;
src_v += 1;
}
if (width & 1) {
dst_frame[0] = src_u[0];
dst_frame[1] = src_y[0];
dst_frame[2] = src_v[0];
dst_frame[3] = src_y[0]; // duplicate last y
}
}
#if !defined(LIBYUV_DISABLE_X86)
// row_win.cc has asm version, but GCC uses 2 step wrapper. 5% slower.
// TODO(fbarchard): Handle width > kMaxStride here instead of calling code.
#if defined(__x86_64__) || defined(__i386__)
void I422ToRGB565Row_SSSE3(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
SIMD_ALIGNED(uint8 row[kMaxStride]);
I422ToARGBRow_SSSE3(src_y, src_u, src_v, row, width);
ARGBToRGB565Row_SSE2(row, rgb_buf, width);
}
#endif // defined(__x86_64__) || defined(__i386__)
#if defined(_M_IX86) || defined(__x86_64__) || defined(__i386__)
void I422ToARGB1555Row_SSSE3(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
SIMD_ALIGNED(uint8 row[kMaxStride]);
I422ToARGBRow_SSSE3(src_y, src_u, src_v, row, width);
ARGBToARGB1555Row_SSE2(row, rgb_buf, width);
}
void I422ToARGB4444Row_SSSE3(const uint8* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* rgb_buf,
int width) {
SIMD_ALIGNED(uint8 row[kMaxStride]);
I422ToARGBRow_SSSE3(src_y, src_u, src_v, row, width);
ARGBToARGB4444Row_SSE2(row, rgb_buf, width);
}
void NV12ToRGB565Row_SSSE3(const uint8* src_y,
const uint8* src_uv,
uint8* dst_rgb565,
int width) {
SIMD_ALIGNED(uint8 row[kMaxStride]);
NV12ToARGBRow_SSSE3(src_y, src_uv, row, width);
ARGBToRGB565Row_SSE2(row, dst_rgb565, width);
}
void NV21ToRGB565Row_SSSE3(const uint8* src_y,
const uint8* src_vu,
uint8* dst_rgb565,
int width) {
SIMD_ALIGNED(uint8 row[kMaxStride]);
NV21ToARGBRow_SSSE3(src_y, src_vu, row, width);
ARGBToRGB565Row_SSE2(row, dst_rgb565, width);
}
void YUY2ToARGBRow_SSSE3(const uint8* src_yuy2,
uint8* dst_argb,
int width) {
SIMD_ALIGNED(uint8 row_y[kMaxStride]);
SIMD_ALIGNED(uint8 row_u[kMaxStride / 2]);
SIMD_ALIGNED(uint8 row_v[kMaxStride / 2]);
YUY2ToUV422Row_SSE2(src_yuy2, row_u, row_v, width);
YUY2ToYRow_SSE2(src_yuy2, row_y, width);
I422ToARGBRow_SSSE3(row_y, row_u, row_v, dst_argb, width);
}
void YUY2ToARGBRow_Unaligned_SSSE3(const uint8* src_yuy2,
uint8* dst_argb,
int width) {
SIMD_ALIGNED(uint8 row_y[kMaxStride]);
SIMD_ALIGNED(uint8 row_u[kMaxStride / 2]);
SIMD_ALIGNED(uint8 row_v[kMaxStride / 2]);
YUY2ToUV422Row_Unaligned_SSE2(src_yuy2, row_u, row_v, width);
YUY2ToYRow_Unaligned_SSE2(src_yuy2, row_y, width);
I422ToARGBRow_Unaligned_SSSE3(row_y, row_u, row_v, dst_argb, width);
}
void UYVYToARGBRow_SSSE3(const uint8* src_uyvy,
uint8* dst_argb,
int width) {
SIMD_ALIGNED(uint8 row_y[kMaxStride]);
SIMD_ALIGNED(uint8 row_u[kMaxStride / 2]);
SIMD_ALIGNED(uint8 row_v[kMaxStride / 2]);
UYVYToUV422Row_SSE2(src_uyvy, row_u, row_v, width);
UYVYToYRow_SSE2(src_uyvy, row_y, width);
I422ToARGBRow_SSSE3(row_y, row_u, row_v, dst_argb, width);
}
void UYVYToARGBRow_Unaligned_SSSE3(const uint8* src_uyvy,
uint8* dst_argb,
int width) {
SIMD_ALIGNED(uint8 row_y[kMaxStride]);
SIMD_ALIGNED(uint8 row_u[kMaxStride / 2]);
SIMD_ALIGNED(uint8 row_v[kMaxStride / 2]);
UYVYToUV422Row_Unaligned_SSE2(src_uyvy, row_u, row_v, width);
UYVYToYRow_Unaligned_SSE2(src_uyvy, row_y, width);
I422ToARGBRow_Unaligned_SSSE3(row_y, row_u, row_v, dst_argb, width);
}
#endif // defined(_M_IX86) || defined(__x86_64__) || defined(__i386__)
#endif // !defined(LIBYUV_DISABLE_X86)
#undef clamp0
#undef clamp255
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif
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