Android Color Convert decodeYUV420SP(int[] rgb, byte[] yuv420sp, int width, int height)

Description

decode YUVSP

Declaration

public static final void decodeYUV420SP(int[] rgb, byte[] yuv420sp,
        int width, int height) 

Method Source Code

//package com.java2s;

public class Main {

    public static final void decodeYUV420SP(int[] rgb, byte[] yuv420sp,
            int width, int height) {
        final int frameSize = width * height;
        for (int j = 0, yp = 0; j < height; j++) {
            int uvp = frameSize + (j >> 1) * width, u = 0, v = 0;
            for (int i = 0; i < width; i++, yp++) {
                int y = (0xff & ((int) yuv420sp[yp])) - 16;
                if (y < 0)
                    y = 0;//from w w  w.  ja  va 2 s.c  om
                if ((i & 1) == 0) {
                    v = (0xff & yuv420sp[uvp++]) - 128;
                    u = (0xff & yuv420sp[uvp++]) - 128;
                }
                int y1192 = 1192 * y;
                int r = (y1192 + 1634 * v);
                int g = (y1192 - 833 * v - 400 * u);
                int b = (y1192 + 2066 * u);
                if (r < 0)
                    r = 0;
                else if (r > 262143)
                    r = 262143;
                if (g < 0)
                    g = 0;
                else if (g > 262143)
                    g = 262143;
                if (b < 0)
                    b = 0;
                else if (b > 262143)
                    b = 262143;
                rgb[yp] = 0xff000000 | ((r << 6) & 0xff0000)
                        | ((g >> 2) & 0xff00) | ((b >> 10) & 0xff);
            }
        }
    }
}

Related

1. RGBToColor(final float pRed, final float pGreen, final float pBlue)
2. getArgb(int color)
3. getColorFromArgb(int[] argb)
4. decodeYUV420SP(int[] rgb, byte[] yuv420sp, int width, int height)
5. decodeYUV420SPGrayscale(int[] rgb, byte[] yuv420sp, int width, int height)
6. rgbToGray(int pixels)