Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;

public class Main {
    public static byte[] bmp2bytesStream(Bitmap bitmap) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        if (width % 8 != 0) {
            int adjustWidth = width + (8 - width % 8);
            final Bitmap.Config config = Bitmap.Config.ARGB_8888;
            Bitmap whiteBgBitmap = Bitmap.createBitmap(adjustWidth, height, config);
            Canvas canvas = new Canvas(whiteBgBitmap);
            canvas.drawColor(Color.WHITE);
            canvas.drawBitmap(bitmap, 0, 0, null);

            bitmap = whiteBgBitmap;
            width = bitmap.getWidth();
        }
        int[] pixels = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
        byte[] image = new byte[width * height];
        final byte WHITE = 0, BLACK = 1;
        for (int i = 0; i < pixels.length; i++) {
            image[i] = (pixels[i] != 0xFFFFFFFF) ? BLACK : WHITE;
        }
        final int COL = width + width % 2;
        byte[] row = new byte[COL];
        byte[] res = new byte[COL / 8 * height];
        for (int i = 0, dex = 0, num = 0; i < height; ++i) {
            System.arraycopy(image, i * width, row, 0, width);
            for (byte e : row) {
                res[dex] += e << (7 - num++);
                num = 8 == num ? 0 : num;
                dex = 0 == num ? dex + 1 : dex;
            }
        }
        return res;
    }
}