Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.graphics.Bitmap;

public class Main {

    public static byte[] rgb2YUV(Bitmap bitmap) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        int[] pixels = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);

        int len = width * height;
        byte[] yuv = new byte[len * 3 / 2];
        int y, u, v;
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                int rgb = pixels[i * width + j] & 0x00FFFFFF;

                int r = rgb & 0xFF;
                int g = (rgb >> 8) & 0xFF;
                int b = (rgb >> 16) & 0xFF;

                y = ((66 * r + 129 * g + 25 * b + 128) >> 8) + 16;
                u = ((-38 * r - 74 * g + 112 * b + 128) >> 8) + 128;
                v = ((112 * r - 94 * g - 18 * b + 128) >> 8) + 128;

                y = y < 16 ? 16 : (y > 255 ? 255 : y);
                u = u < 0 ? 0 : (u > 255 ? 255 : u);
                v = v < 0 ? 0 : (v > 255 ? 255 : v);

                yuv[i * width + j] = (byte) y;
                // yuv[len + (i >> 1) * width + (j & ~1) + 0] = (byte) u;
                // yuv[len + (i >> 1) * width + (j & ~1) + 1] = (byte) v;
            }
        }
        return yuv;
    }
}