YUV转RGB查表方式的代码

　　YUV格式画面可以出来。如果是其他的YUV格式，颜色会有问题。性能并不象预料中的那样。

static int Table_fv1[] = {
        -180, -179, -177, -176, -174, -173, -172, -170,
        -169, -167, -166, -165, -163, -162, -160, -159,
        -158, -156, -155, -153, -152, -151, -149, -148,
        -146, -145, -144, -142, -141, -139, -138, -137,
        
        -135, -134, -132, -131, -130, -128, -127, -125,
        -124, -123, -121, -120, -118, -117, -115, -114,
        -113, -111, -110, -108, -107, -106, -104, -103,
        -101, -100,  -99,  -97,  -96,  -94,  -93,  -92,
        
         -90,  -89,  -87,  -86,  -85,  -83,  -82,  -80,
         -79,  -78,  -76,  -75,  -73,  -72,  -71,  -69,
         -68,  -66,  -65,  -64,  -62,  -61,  -59,  -58,
         -57,  -55,  -54,  -52,  -51,  -50,  -48,  -47,
         
         -45, -44, -43, -41, -40, -38, -37, -36,
         -34, -33, -31, -30, -29, -27, -26, -24,
         -23, -22, -20, -19, -17, -16, -15, -13,
         -12, -10,  -9,  -8,  -6,  -5,  -3,  -2,
         
         0, 1, 2, 4, 5, 7,
         8, 9, 11, 12, 14, 15,
         16, 18, 19, 21, 22, 23, 25, 26, 28, 29, 30,
         32, 33, 35, 36, 37, 39, 40, 42, 43, 44, 46,
         47, 49, 50, 51, 53, 54, 56, 57, 58, 60, 61,
         63, 64, 65, 67, 68, 70, 71, 72, 74, 75, 77, 78, 79,
         81, 82, 84, 85, 86, 88, 89, 91, 92, 93, 95, 96, 98, 99, 100,
         102, 103, 105, 106, 107, 109, 110, 112, 113, 114, 116, 117,
         119, 120, 122, 123, 124, 126, 127, 129, 130, 131, 133, 134,
         136, 137, 138, 140, 141, 143, 144, 145, 147, 148,
         150, 151, 152, 154, 155, 157, 158, 159, 161, 162,
         164, 165, 166, 168, 169, 171, 172, 173, 175, 176, 178 };
    static int Table_fv2[] = {
        -92, -91, -91, -90, -89, -88, -88, -87, -86, -86, -85,
        -84, -83, -83, -82, -81, -81, -80, -79, -78, -78, -77,
        -76, -76, -75, -74, -73, -73, -72, -71, -71, -70, -69,
        -68, -68, -67, -66, -66, -65, -64, -63, -63, -62,
        -61, -61, -60, -59, -58, -58, -57, -56, -56, -55,
        -54, -53, -53, -52, -51, -51, -50, -49, -48, -48, -47,
        -46, -46, -45, -44, -43, -43, -42, -41, -41, -40, -39, -38, -38,
        -37, -36, -36, -35, -34, -33, -33, -32, -31, -31, -30, -29,
        -28, -28, -27, -26, -26, -25, -24, -23, -23, -22, -21, -21, -20, -19,
        -18, -18, -17, -16, -16, -15, -14, -13, -13, -12, -11, -11, -10, -9,
        -8, -8, -7, -6, -6, -5, -4, -3, -3, -2, -1, 0, 0, 1, 2, 2, 3, 4, 5, 5,
        6, 7, 7, 8, 9, 10, 10, 11, 12, 12, 13, 14, 15, 15, 16, 17, 17, 18, 19,
        20, 20, 21, 22, 22, 23, 24, 25, 25, 26, 27, 27, 28, 29, 30, 30, 31,
        32, 32, 33, 34, 35, 35, 36, 37, 37, 38, 39, 40, 40, 41, 42, 42,
        43, 44, 45, 45, 46, 47, 47, 48, 49, 50, 50, 51, 52, 52, 53, 54, 55, 55,
        56, 57, 57, 58, 59, 60, 60, 61, 62, 62, 63, 64, 65, 65, 66, 67, 67, 68, 69,
        70, 70, 71, 72, 72, 73, 74, 75, 75, 76, 77, 77, 78, 79, 80, 80, 81, 82, 82,
        83, 84, 85, 85, 86, 87, 87, 88, 89, 90, 90 };
    static int Table_fu1[] = {
        -44, -44, -44, -43, -43, -43, -42, -42, -42,
        -41, -41, -41, -40, -40, -40, -39, -39, -39,
        -38, -38, -38, -37, -37, -37, -36, -36, -36,
        -35, -35, -35, -34, -34, -33, -33, -33,
        
        -32, -32, -32, -31, -31, -31, -30, -30, -30,
        -29, -29, -29, -28, -28, -28, -27, -27, -27,
        -26, -26, -26, -25, -25, -25, -24, -24, -24,
        -23, -23, -22, -22, -22, -21, -21, -21,
        
        -20, -20, -20, -19, -19, -19, -18, -18, -18,
        -17, -17, -17, -16, -16, -16, -15, -15, -15,
        -14, -14, -14, -13, -13, -13, -12, -12,
        
        -11, -11, -11, -10, -10, -10, -9, -9, -9,
        -8, -8, -8, -7, -7, -7, -6, -6, -6, -5,
        -5, -5, -4, -4, -4, -3, -3, -3,
        -2, -2, -2, -1, -1,
        
        0, 0, 0, 1, 1, 1, 2, 2, 2,
        3, 3, 3, 4, 4, 4, 5, 5, 5,
        6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10,
        11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14,
        15, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18,
        19, 19, 19, 20, 20, 20, 21, 21, 22, 22, 22, 23, 23, 23,
        24, 24, 24, 25, 25, 25, 26, 26, 26, 27, 27, 27,
        28, 28, 28, 29, 29, 29, 30, 30, 30, 31, 31, 31, 32, 32,
        33, 33, 33, 34, 34, 34, 35, 35, 35, 36, 36, 36, 37, 37, 37,
        38, 38, 38, 39, 39, 39, 40, 40, 40, 41, 41, 41, 42, 42, 42,
        43, 43 };
    
    static int Table_fu2[] = {
        -227, -226, -224, -222, -220, -219, -217, -215, -213, -212,
        -210, -208, -206, -204, -203, -201, -199, -197, -196, -194,
        -192, -190, -188, -187, -185, -183, -181, -180, -178, -176,
        -174, -173, -171, -169, -167, -165, -164, -162, -160, -158,
        -157, -155, -153, -151, -149, -148, -146, -144, -142, -141,
        -139, -137, -135, -134, -132, -130, -128, -126, -125, -123,
        -121, -119, -118, -116, -114, -112, -110, -109, -107, -105,
        -103, -102, -100, -98, -96, -94, -93, -91, -89, -87, -86,
        -84, -82, -80, -79, -77, -75, -73, -71, -70, -68, -66,
        -64, -63, -61, -59, -57, -55, -54, -52, -50, -48, -47,
        -45, -43, -41, -40, -38, -36, -34, -32, -31, -29, -27,
        -25, -24, -22, -20, -18, -16, -15, -13, -11, -9, -8,
        -6, -4, -2, 0, 1, 3, 5, 7, 8, 10, 12, 14, 15, 17, 19,
        21, 23, 24, 26, 28, 30, 31, 33, 35, 37, 39, 40, 42,
        44, 46, 47, 49, 51, 53, 54, 56, 58, 60, 62, 63, 65,
        67, 69, 70, 72, 74, 76, 78, 79, 81, 83, 85, 86, 88,
        90, 92, 93, 95, 97, 99, 101, 102, 104, 106, 108, 109,
        111, 113, 115, 117, 118, 120, 122, 124, 125, 127, 129,
        131, 133, 134, 136, 138, 140, 141, 143, 145, 147, 148,
        150, 152, 154, 156, 157, 159, 161, 163, 164, 166, 168,
        170, 172, 173, 175, 177, 179, 180, 182, 184, 186, 187,
        189, 191, 193, 195, 196, 198, 200, 202, 203, 205, 207,
        209, 211, 212, 214, 216, 218, 219, 221, 223, 225
        };
 
    
    public static boolean YV12ToBGRA_Table(byte[] pYUV, byte[] pBGR24, int width, int height)
    {
        if (width < 1 || height < 1 || pYUV == null || pBGR24 == null)
        {
            return false;
        }
        
        Log.e(TAG, "size="+pYUV.length+", "+pBGR24.length+", "+width+", "+height);
        int color_depth = 4;
        int len = width * height;
        int yData = 0;
        int vData = len;
        int uData = len >> 2;
 
        int bgr[] = new int[color_depth];
        int yIdx,uIdx,vIdx,idx;
        int rdif,invgdif,bdif;
        for (int i = 0;i < height;i++){
            for (int j = 0;j < width;j++){
                yIdx = i * width + j;
                vIdx = (i/2) * (width/2) + (j/2);
                uIdx = vIdx;
                
                rdif    = Table_fv1[pYUV[vData+vIdx] & 0xFF];
                invgdif = Table_fu1[pYUV[uData+uIdx] & 0xFF] + Table_fv2[pYUV[vData+vIdx] & 0xFF];
                bdif    = Table_fu2[pYUV[uData+uIdx] & 0xFF];
 
                bgr[0] = (pYUV[yData+yIdx] & 0xFF) + bdif;    
                bgr[1] = (pYUV[yData+yIdx] & 0xFF) - invgdif;
                bgr[2] = (pYUV[yData+yIdx] & 0xFF) + rdif;
 
                for (int k = 0;k < color_depth;k++){
                    idx = (i * width + j) * color_depth + k;
                    if(bgr[k] >= 0 && bgr[k] <= 255)
                        pBGR24[idx] = (byte)  bgr[k];
                    else
                        pBGR24[idx] = (byte)((bgr[k] < 0)? 0: 255);
                }
            }
        }
        return true;
    }