Example usage for android.graphics Bitmap getPixels

Introduction

In this page you can find the example usage for android.graphics Bitmap getPixels.

Prototype

public void getPixels(@ColorInt int[] pixels, int offset, int stride, int x, int y, int width, int height)

Source Link

Document

Returns in pixels[] a copy of the data in the bitmap.

Usage

From source file:Main.java

/**
 * Get the hashcode for a bitmap.//from   w w  w  .  j a va2 s . c  o  m
 */
private static String hashBitmap(Bitmap bmp) {
    int[] allpixels = new int[bmp.getHeight() * bmp.getWidth()];
    bmp.getPixels(allpixels, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
    return Integer.toHexString(Arrays.hashCode(allpixels));
}

From source file:Main.java

@Deprecated
public static Bitmap setAlpha(Bitmap source, int number) {
    int[] argb = new int[source.getWidth() * source.getHeight()];
    source.getPixels(argb, 0, source.getWidth(), 0, 0, source.getWidth(), source.getHeight());
    number = number * 255 / 100;//w  w w.  jav  a2 s  .  co m
    for (int i = 0; i < argb.length; i++) {
        argb[i] = (number << 24) | (argb[i] & 0x00FFFFFF);
    }
    return Bitmap.createBitmap(argb, source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
}

From source file:Main.java

public static byte[] bitmapToNV21(int inputWidth, int inputHeight, Bitmap bitmap) {
    int[] argb = new int[inputWidth * inputHeight];
    bitmap.getPixels(argb, 0, inputWidth, 0, 0, inputWidth, inputHeight);
    byte[] yuv = ARGBtoYUV420SemiPlanar(argb, inputWidth, inputHeight);
    bitmap.recycle();//from ww  w .  j av a2  s  .  c  om
    return yuv;
}

From source file:Main.java

public static byte[] getNV21(int inputWidth, int inputHeight, Bitmap scaled) {

    int[] argb = new int[inputWidth * inputHeight];
    scaled.getPixels(argb, 0, inputWidth, 0, 0, inputWidth, inputHeight);
    byte[] yuv = new byte[inputWidth * inputHeight * 3 / 2];
    encodeYUV420SP(yuv, argb, inputWidth, inputHeight);
    return yuv;//  www .j  a v a2 s.  co m
}

From source file:Main.java

public static int[] getPixels(Bitmap bit) {
    int w = bit.getWidth(), h = bit.getHeight();
    int pixels[] = new int[w * h];
    bit.getPixels(pixels, 0, w, 0, 0, w, h);
    return pixels;
}

From source file:Main.java

public static int[] getBitmapPixels(@NonNull Bitmap bitmap, int x, int y, int width, int height) {
    int[] pixels = new int[bitmap.getWidth() * bitmap.getHeight()];
    bitmap.getPixels(pixels, 0, bitmap.getWidth(), x, y, width, height);
    final int[] subsetPixels = new int[width * height];
    for (int row = 0; row < height; row++) {
        System.arraycopy(pixels, (row * bitmap.getWidth()), subsetPixels, row * width, width);
    }//from  w  w  w. j av a 2  s. c  o m
    return subsetPixels;
}

From source file:Main.java

public static Bitmap convertToBlackWhite(Bitmap bmp) {
    int width = bmp.getWidth();
    int height = bmp.getHeight();
    int[] pixels = new int[width * height];

    bmp.getPixels(pixels, 0, width, 0, 0, width, height);
    int alpha = 0xFF << 24;
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            int grey = pixels[width * i + j];

            int red = ((grey & 0x00FF0000) >> 16);
            int green = ((grey & 0x0000FF00) >> 8);
            int blue = (grey & 0x000000FF);

            grey = (int) (red * 0.3 + green * 0.59 + blue * 0.11);
            grey = alpha | (grey << 16) | (grey << 8) | grey;
            pixels[width * i + j] = grey;
        }//from   w  w  w  .  j  av a2  s  .  co m
    }
    Bitmap newBmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
    newBmp.setPixels(pixels, 0, width, 0, 0, width, height);
    return ThumbnailUtils.extractThumbnail(newBmp, 380, 460);
}

From source file:Main.java

public static Bitmap blackAndWhited(Bitmap in) {
    int width = in.getWidth();
    int height = in.getHeight();

    int[] pixels = new int[width * height];
    in.getPixels(pixels, 0, width, 0, 0, width, height);
    int alpha = 0xFF << 24;
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            int grey = pixels[width * i + j];
            int red = ((grey & 0x00FF0000) >> 16);
            int green = ((grey & 0x0000FF00) >> 8);
            int blue = (grey & 0x000000FF);
            grey = (int) (red * 0.3 + green * 0.59 + blue * 0.11);
            grey = alpha | (grey << 16) | (grey << 8) | grey;
            pixels[width * i + j] = grey;
        }//from w w  w .  j a v a  2 s.  com
    }
    Bitmap newBmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
    newBmp.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBmp;
}

From source file:Main.java

public static Bitmap applyShadingFilter(Bitmap source, int shadingColor) {
    int width = source.getWidth();
    int height = source.getHeight();
    int[] pixels = new int[width * height];
    source.getPixels(pixels, 0, width, 0, 0, width, height);

    int index = 0;
    for (int y = 0; y < height; ++y) {
        for (int x = 0; x < width; ++x) {
            index = y * width + x;/*from  w  ww .  j  a  v  a 2 s .  c om*/
            pixels[index] &= shadingColor;
        }
    }
    Bitmap bmOut = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bmOut.setPixels(pixels, 0, width, 0, 0, width, height);
    return bmOut;
}

From source file:Main.java

public static int[] bitmapToIntArray(Bitmap bitmap) {
    final int bitmapWidth = bitmap.getWidth();
    final int bitmapHeight = bitmap.getHeight();

    int[] colors = new int[bitmapWidth * bitmapHeight];
    bitmap.getPixels(colors, 0, bitmapWidth, 0, 0, bitmapWidth, bitmapHeight);

    return colors;
}