convert.c

yuv422->yuv420 非常好用

0xFFFE6ED4,0xFFFED31F,0xFFFF376A,0xFFFF9BB5,  
0x00000000,0x0000644B,0x0000C896,0x00012CE1,  
0x0001912C,0x0001F577,0x000259C2,0x0002BE0D,  
0x00032258,0x000386A3,0x0003EAEE,0x00044F39,	
};
static const long int cgv_tab[256] = {
0xFF97F080,0xFF98C09F,0xFF9990BE,0xFF9A60DD, 
0xFF9B30FC,0xFF9C011B,0xFF9CD13A,0xFF9DA159, 
0xFF9E7178,0xFF9F4197,0xFFA011B6,0xFFA0E1D5, 
0xFFA1B1F4,0xFFA28213,0xFFA35232,0xFFA42251, 
0xFFA4F270,0xFFA5C28F,0xFFA692AE,0xFFA762CD, 
0xFFA832EC,0xFFA9030B,0xFFA9D32A,0xFFAAA349, 
0xFFAB7368,0xFFAC4387,0xFFAD13A6,0xFFADE3C5, 
0xFFAEB3E4,0xFFAF8403,0xFFB05422,0xFFB12441, 
0xFFB1F460,0xFFB2C47F,0xFFB3949E,0xFFB464BD, 
0xFFB534DC,0xFFB604FB,0xFFB6D51A,0xFFB7A539, 
0xFFB87558,0xFFB94577,0xFFBA1596,0xFFBAE5B5, 
0xFFBBB5D4,0xFFBC85F3,0xFFBD5612,0xFFBE2631, 
0xFFBEF650,0xFFBFC66F,0xFFC0968E,0xFFC166AD, 
0xFFC236CC,0xFFC306EB,0xFFC3D70A,0xFFC4A729, 
0xFFC57748,0xFFC64767,0xFFC71786,0xFFC7E7A5, 
0xFFC8B7C4,0xFFC987E3,0xFFCA5802,0xFFCB2821, 
0xFFCBF840,0xFFCCC85F,0xFFCD987E,0xFFCE689D, 
0xFFCF38BC,0xFFD008DB,0xFFD0D8FA,0xFFD1A919, 
0xFFD27938,0xFFD34957,0xFFD41976,0xFFD4E995, 
0xFFD5B9B4,0xFFD689D3,0xFFD759F2,0xFFD82A11, 
0xFFD8FA30,0xFFD9CA4F,0xFFDA9A6E,0xFFDB6A8D, 
0xFFDC3AAC,0xFFDD0ACB,0xFFDDDAEA,0xFFDEAB09, 
0xFFDF7B28,0xFFE04B47,0xFFE11B66,0xFFE1EB85, 
0xFFE2BBA4,0xFFE38BC3,0xFFE45BE2,0xFFE52C01, 
0xFFE5FC20,0xFFE6CC3F,0xFFE79C5E,0xFFE86C7D, 
0xFFE93C9C,0xFFEA0CBB,0xFFEADCDA,0xFFEBACF9, 
0xFFEC7D18,0xFFED4D37,0xFFEE1D56,0xFFEEED75, 
0xFFEFBD94,0xFFF08DB3,0xFFF15DD2,0xFFF22DF1, 
0xFFF2FE10,0xFFF3CE2F,0xFFF49E4E,0xFFF56E6D, 
0xFFF63E8C,0xFFF70EAB,0xFFF7DECA,0xFFF8AEE9, 
0xFFF97F08,0xFFFA4F27,0xFFFB1F46,0xFFFBEF65, 
0xFFFCBF84,0xFFFD8FA3,0xFFFE5FC2,0xFFFF2FE1, 
0x00000000,0x0000D01F,0x0001A03E,0x0002705D, 
0x0003407C,0x0004109B,0x0004E0BA,0x0005B0D9, 
0x000680F8,0x00075117,0x00082136,0x0008F155, 
0x0009C174,0x000A9193,0x000B61B2,0x000C31D1, 
0x000D01F0,0x000DD20F,0x000EA22E,0x000F724D, 
0x0010426C,0x0011128B,0x0011E2AA,0x0012B2C9, 
0x001382E8,0x00145307,0x00152326,0x0015F345, 
0x0016C364,0x00179383,0x001863A2,0x001933C1, 
0x001A03E0,0x001AD3FF,0x001BA41E,0x001C743D, 
0x001D445C,0x001E147B,0x001EE49A,0x001FB4B9, 
0x002084D8,0x002154F7,0x00222516,0x0022F535, 
0x0023C554,0x00249573,0x00256592,0x002635B1, 
0x002705D0,0x0027D5EF,0x0028A60E,0x0029762D, 
0x002A464C,0x002B166B,0x002BE68A,0x002CB6A9, 
0x002D86C8,0x002E56E7,0x002F2706,0x002FF725, 
0x0030C744,0x00319763,0x00326782,0x003337A1, 
0x003407C0,0x0034D7DF,0x0035A7FE,0x0036781D, 
0x0037483C,0x0038185B,0x0038E87A,0x0039B899, 
0x003A88B8,0x003B58D7,0x003C28F6,0x003CF915, 
0x003DC934,0x003E9953,0x003F6972,0x00403991, 
0x004109B0,0x0041D9CF,0x0042A9EE,0x00437A0D, 
0x00444A2C,0x00451A4B,0x0045EA6A,0x0046BA89, 
0x00478AA8,0x00485AC7,0x00492AE6,0x0049FB05, 
0x004ACB24,0x004B9B43,0x004C6B62,0x004D3B81, 
0x004E0BA0,0x004EDBBF,0x004FABDE,0x00507BFD, 
0x00514C1C,0x00521C3B,0x0052EC5A,0x0053BC79, 
0x00548C98,0x00555CB7,0x00562CD6,0x0056FCF5, 
0x0057CD14,0x00589D33,0x00596D52,0x005A3D71, 
0x005B0D90,0x005BDDAF,0x005CADCE,0x005D7DED, 
0x005E4E0C,0x005F1E2B,0x005FEE4A,0x0060BE69, 
0x00618E88,0x00625EA7,0x00632EC6,0x0063FEE5, 
0x0064CF04,0x00659F23,0x00666F42,0x00673F61,	
};
static const long int tab_76309[256] = {
0xFFED5EB0,0xFFEE88C5,0xFFEFB2DA,0xFFF0DCEF,  
0xFFF20704,0xFFF33119,0xFFF45B2E,0xFFF58543,  
0xFFF6AF58,0xFFF7D96D,0xFFF90382,0xFFFA2D97,  
0xFFFB57AC,0xFFFC81C1,0xFFFDABD6,0xFFFED5EB,  
0x00000000,0x00012A15,0x0002542A,0x00037E3F,  
0x0004A854,0x0005D269,0x0006FC7E,0x00082693,  
0x000950A8,0x000A7ABD,0x000BA4D2,0x000CCEE7,  
0x000DF8FC,0x000F2311,0x00104D26,0x0011773B,  
0x0012A150,0x0013CB65,0x0014F57A,0x00161F8F,  
0x001749A4,0x001873B9,0x00199DCE,0x001AC7E3,  
0x001BF1F8,0x001D1C0D,0x001E4622,0x001F7037,  
0x00209A4C,0x0021C461,0x0022EE76,0x0024188B,  
0x002542A0,0x00266CB5,0x002796CA,0x0028C0DF,  
0x0029EAF4,0x002B1509,0x002C3F1E,0x002D6933,  
0x002E9348,0x002FBD5D,0x0030E772,0x00321187,  
0x00333B9C,0x003465B1,0x00358FC6,0x0036B9DB,  
0x0037E3F0,0x00390E05,0x003A381A,0x003B622F,  
0x003C8C44,0x003DB659,0x003EE06E,0x00400A83,  
0x00413498,0x00425EAD,0x004388C2,0x0044B2D7,  
0x0045DCEC,0x00470701,0x00483116,0x00495B2B,  
0x004A8540,0x004BAF55,0x004CD96A,0x004E037F,  
0x004F2D94,0x005057A9,0x005181BE,0x0052ABD3,  
0x0053D5E8,0x0054FFFD,0x00562A12,0x00575427,  
0x00587E3C,0x0059A851,0x005AD266,0x005BFC7B,  
0x005D2690,0x005E50A5,0x005F7ABA,0x0060A4CF,  
0x0061CEE4,0x0062F8F9,0x0064230E,0x00654D23,  
0x00667738,0x0067A14D,0x0068CB62,0x0069F577,  
0x006B1F8C,0x006C49A1,0x006D73B6,0x006E9DCB,  
0x006FC7E0,0x0070F1F5,0x00721C0A,0x0073461F,  
0x00747034,0x00759A49,0x0076C45E,0x0077EE73,  
0x00791888,0x007A429D,0x007B6CB2,0x007C96C7,  
0x007DC0DC,0x007EEAF1,0x00801506,0x00813F1B,  
0x00826930,0x00839345,0x0084BD5A,0x0085E76F,  
0x00871184,0x00883B99,0x008965AE,0x008A8FC3,  
0x008BB9D8,0x008CE3ED,0x008E0E02,0x008F3817,  
0x0090622C,0x00918C41,0x0092B656,0x0093E06B,  
0x00950A80,0x00963495,0x00975EAA,0x009888BF,  
0x0099B2D4,0x009ADCE9,0x009C06FE,0x009D3113,  
0x009E5B28,0x009F853D,0x00A0AF52,0x00A1D967,  
0x00A3037C,0x00A42D91,0x00A557A6,0x00A681BB,  
0x00A7ABD0,0x00A8D5E5,0x00A9FFFA,0x00AB2A0F,  
0x00AC5424,0x00AD7E39,0x00AEA84E,0x00AFD263,  
0x00B0FC78,0x00B2268D,0x00B350A2,0x00B47AB7,  
0x00B5A4CC,0x00B6CEE1,0x00B7F8F6,0x00B9230B,  
0x00BA4D20,0x00BB7735,0x00BCA14A,0x00BDCB5F,  
0x00BEF574,0x00C01F89,0x00C1499E,0x00C273B3,  
0x00C39DC8,0x00C4C7DD,0x00C5F1F2,0x00C71C07,  
0x00C8461C,0x00C97031,0x00CA9A46,0x00CBC45B,  
0x00CCEE70,0x00CE1885,0x00CF429A,0x00D06CAF,  
0x00D196C4,0x00D2C0D9,0x00D3EAEE,0x00D51503,  
0x00D63F18,0x00D7692D,0x00D89342,0x00D9BD57,  
0x00DAE76C,0x00DC1181,0x00DD3B96,0x00DE65AB,  
0x00DF8FC0,0x00E0B9D5,0x00E1E3EA,0x00E30DFF,  
0x00E43814,0x00E56229,0x00E68C3E,0x00E7B653,  
0x00E8E068,0x00EA0A7D,0x00EB3492,0x00EC5EA7,  
0x00ED88BC,0x00EEB2D1,0x00EFDCE6,0x00F106FB,  
0x00F23110,0x00F35B25,0x00F4853A,0x00F5AF4F,  
0x00F6D964,0x00F80379,0x00F92D8E,0x00FA57A3,  
0x00FB81B8,0x00FCABCD,0x00FDD5E2,0x00FEFFF7,  
0x01002A0C,0x01015421,0x01027E36,0x0103A84B,  
0x0104D260,0x0105FC75,0x0107268A,0x0108509F,  
0x01097AB4,0x010AA4C9,0x010BCEDE,0x010CF8F3,  
0x010E2308,0x010F4D1D,0x01107732,0x0111A147,  
0x0112CB5C,0x0113F571,0x01151F86,0x0116499B,
};
static const unsigned char clp[1024] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x05,
0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,
0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,0x23,
0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,
0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,
0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,
0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,
0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,0x55,
0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,
0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0x73,
0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,
0x7E,0x7F,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,
0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,
0x9C,0x9D,0x9E,0x9F,0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,
0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,
0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,0xC0,0xC1,0xC2,0xC3,
0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,
0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,
0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1,
0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,
0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,
0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF, 
}; 
//420 to  rgb
void YUV420ToBGR888(unsigned char* srcy,unsigned char* srcu,unsigned char* srcv,
    unsigned char* dst_bgr,int width,int height)
{
 unsigned char *src0;
 unsigned char *src1;
 unsigned char *src2;
 int y1,y2,u,v; 
 unsigned char *py1,*py2;
 int i,j, c1, c2, c3, c4;
 unsigned char *d1, *d2;
 
 //Initialization
 src0=srcy;
 src1=srcu;
 src2=srcv;
 
 py1=src0;
 py2=py1+width;
 d1=dst_bgr;
 d2=d1+3*width;
  for (j = 0; j < height; j += 2) { 
  for (i = 0; i < width; i += 2) {
 
   u = *src1++;
   v = *src2++;
 
   c1 = crv_tab[v];
   c2 = cgu_tab[u];
   c3 = cgv_tab[v];
   c4 = cbu_tab[u];
 
   //up-left
    y1 = tab_76309[*py1++]; 
   *d1++ = clp[384+((y1 + c4)>>16)];
   *d1++ = clp[384+((y1 - c2 - c3)>>16)];
   *d1++ = clp[384+((y1 + c1)>>16)];  
 
   //down-left
   y2 = tab_76309[*py2++];
            *d2++ = clp[384+((y2 + c4)>>16)];
   *d2++ = clp[384+((y2 - c2 - c3)>>16)];
   *d2++ = clp[384+((y2 + c1)>>16)];  
 
   //up-right
   y1 = tab_76309[*py1++];
   *d1++ = clp[384+((y1 + c4)>>16)];
   *d1++ = clp[384+((y1 - c2 - c3)>>16)];
   *d1++ = clp[384+((y1 + c1)>>16)];  
 
   //down-right
   y2 = tab_76309[*py2++];
            *d2++ = clp[384+((y2 + c4)>>16)];
   *d2++ = clp[384+((y2 - c2 - c3)>>16)];
   *d2++ = clp[384+((y2 + c1)>>16)];  
  }
  d1 += 3*width;
  d2 += 3*width;
  py1+=   width;
  py2+=   width;
 }       
}