convert YUVSP420 To ARGB Color - Android Graphics

Android examples for Graphics:Color RGB Value

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Description

convert YUVSP420 To ARGB Color

Demo Code


//package com.java2s;

public class Main {
    public static void convertYUV420SPToARGB(int[] argbBuf,
            byte[] yuv420sp, int width, int height) {
        final int frameSize = width * height;
        if (argbBuf == null) {
            throw new NullPointerException("buffer 'rgbBuf' is null");
        }/*  w w  w .j  a  v a  2 s.c  om*/
        if (argbBuf.length < frameSize) {
            throw new IllegalArgumentException("buffer 'rgbBuf' size "
                    + argbBuf.length + " < minimum " + frameSize);
        }
        if (yuv420sp == null) {
            throw new NullPointerException("buffer 'yuv420sp' is null");
        }
        if (yuv420sp.length < frameSize * 3 / 2) {
            throw new IllegalArgumentException("buffer 'yuv420sp' size "
                    + yuv420sp.length + " < minimum " + frameSize * 3 / 2);
        }

        int i = 0, y = 0;
        int uvp = 0, u = 0, v = 0;
        int y1192 = 0, r = 0, g = 0, b = 0;

        for (int j = 0, yp = 0; j < height; j++) {
            uvp = frameSize + (j >> 1) * width;
            u = 0;
            v = 0;
            for (i = 0; i < width; i++, yp++) {
                y = (0xff & ((int) yuv420sp[yp])) - 16;
                if (y < 0)
                    y = 0;
                if ((i & 1) == 0) {
                    v = (0xff & yuv420sp[uvp++]) - 128;
                    u = (0xff & yuv420sp[uvp++]) - 128;
                }

                y1192 = 1192 * y;
                r = (y1192 + 1634 * v);
                g = (y1192 - 833 * v - 400 * u);
                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;

                argbBuf[yp] = 0xff000000 | ((r << 6) & 0xff0000)
                        | ((g >> 2) & 0xff00) | ((b >> 10) & 0xff);
            }
        }
    }
}

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