How to use

getPixels

method

in

android.graphics.Bitmap

protected int[] getImageData(Bitmap img) {
  int w = img.getWidth();
  int h = img.getHeight();
  int[] data = new int[w * h];
  img.getPixels(data, 0, w, 0, 0, w, h);
  return data;
}

int w = image.getWidth();
int h = image.getHeight();
image.getPixels(pixelsInt, 0, w, 0, 0, w, h);

 private Bitmap RGB565toARGB888(Bitmap img) {
  int numPixels = img.getWidth()* img.getHeight();
  int[] pixels = new int[numPixels];

  //Get JPEG pixels.  Each int is the color values for one pixel.
  img.getPixels(pixels, 0, img.getWidth(), 0, 0, img.getWidth(), img.getHeight());

  //Create a Bitmap of the appropriate format.
  Bitmap result = Bitmap.createBitmap(img.getWidth(), img.getHeight(), Bitmap.Config.ARGB_8888);

  //Set RGB pixels.
  result.setPixels(pixels, 0, result.getWidth(), 0, 0, result.getWidth(), result.getHeight());
  return result;
}

public static Bitmap doSaturation(Bitmap inputImage, float level) {
  int width = inputImage.getWidth();
  int height = inputImage.getHeight();
  int[] pixels = new int[width * height];
  inputImage.getPixels(pixels, 0, width, 0, 0, width, height);
  NativeImageProcessor.doSaturation(pixels, level, width, height);
  inputImage.setPixels(pixels, 0, width, 0, 0, width, height);
  return inputImage;
}

public static Bitmap doBrightness(int value, Bitmap inputImage) {
  int width = inputImage.getWidth();
  int height = inputImage.getHeight();
  int[] pixels = new int[width * height];
  inputImage.getPixels(pixels, 0, width, 0, 0, width, height);
  NativeImageProcessor.doBrightness(pixels, value, width, height);
  inputImage.setPixels(pixels, 0, width, 0, 0, width, height);
  return inputImage;
}

public static Bitmap doColorOverlay(int depth, float red, float green, float blue, Bitmap inputImage) {
  int width = inputImage.getWidth();
  int height = inputImage.getHeight();
  int[] pixels = new int[width * height];
  inputImage.getPixels(pixels, 0, width, 0, 0, width, height);
  NativeImageProcessor.doColorOverlay(pixels, depth, red, green, blue, width, height);
  inputImage.setPixels(pixels, 0, width, 0, 0, width, height);
  return inputImage;
}

public static Bitmap doContrast(float value, Bitmap inputImage) {
  int width = inputImage.getWidth();
  int height = inputImage.getHeight();
  int[] pixels = new int[width * height];
  inputImage.getPixels(pixels, 0, width, 0, 0, width, height);
  NativeImageProcessor.doContrast(pixels, value, width, height);
  inputImage.setPixels(pixels, 0, width, 0, 0, width, height);
  return inputImage;
}

public static Bitmap doBlurJniArray(Bitmap sentBitmap, int radius, boolean canReuseInBitmap) {
  Bitmap bitmap;
  if (canReuseInBitmap) {
    bitmap = sentBitmap;
  } else {
    bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
  }
  if (radius < 1) {
    return (null);
  }
  int w = bitmap.getWidth();
  int h = bitmap.getHeight();
  int[] pix = new int[w * h];
  bitmap.getPixels(pix, 0, w, 0, 0, w, h);
  // Jni array calculate
  ImageBlur.blurIntArray(pix, w, h, radius);
  bitmap.setPixels(pix, 0, w, 0, 0, w, h);
  return (bitmap);
}

public BitmapLuminanceSource(Bitmap bitmap) {
  super(bitmap.getWidth(), bitmap.getHeight());
  // 首先，要取得该图片的像素数组内容
  int[] data = new int[bitmap.getWidth() * bitmap.getHeight()];
  this.bitmapPixels = new byte[bitmap.getWidth() * bitmap.getHeight()];
  bitmap.getPixels(data, 0, getWidth(), 0, 0, getWidth(), getHeight());
  // 将int数组转换为byte数组，也就是取像素值中蓝色值部分作为辨析内容
  for (int i = 0; i < data.length; i++) {
    this.bitmapPixels[i] = (byte) data[i];
  }
}

public static Bitmap getColoredBitmap(@NonNull Bitmap bitmap, @ColorInt int color) {
 int alpha = Color.alpha(color);
 int red = Color.red(color);
 int green = Color.green(color);
 int blue = Color.blue(color);
 int[] pixels = new int[bitmap.getWidth() * bitmap.getHeight()];
 bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
 for (int i = 0; i < pixels.length; i++) {
  int pixel = pixels[i];
  int pixelAlpha = Color.alpha(pixel);
  if (pixelAlpha != 0) {
   pixels[i] = Color.argb((int) (pixelAlpha * alpha / 256f), red, green, blue);
  }
 }
 Bitmap coloredBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
 coloredBitmap.setPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(),
   bitmap.getHeight());
 return coloredBitmap;
}

 public static Bitmap getGradientBitmap(int width, int height, @ColorInt int color) {
  Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

  int alpha = Color.alpha(color);
  int red = Color.red(color);
  int green = Color.green(color);
  int blue = Color.blue(color);

  int[] pixels = new int[width * height];
  bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
  for (int y = 0; y < height; y++) {
   int gradientAlpha = (int) ((float) alpha * (float) (height - y) * (float) (height - y)
     / (float) height
     / (float) height);
   for (int x = 0; x < width; x++) {
    pixels[x + y * width] = Color.argb(gradientAlpha, red, green, blue);
   }
  }

  bitmap.setPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
  return bitmap;
 }
}

int w = defaultBitmap.getWidth();
int h = defaultBitmap.getHeight();
defaultBitmap.getPixels(pix, 0, w, 0, 0, w, h);

int width = Math.round(sentBitmap.getWidth() * scale);
int height = Math.round(sentBitmap.getHeight() * scale);
sentBitmap = Bitmap.createScaledBitmap(sentBitmap, width, height, false);
int w = bitmap.getWidth();
int h = bitmap.getHeight();
bitmap.getPixels(pix, 0, w, 0, 0, w, h);

public static Bitmap applyCurves(int[] rgb, int[] red, int[] green, int[] blue, Bitmap inputImage) {
  // create output bitmap
  Bitmap outputImage = inputImage;
  // get image size
  int width = inputImage.getWidth();
  int height = inputImage.getHeight();
  int[] pixels = new int[width * height];
  outputImage.getPixels(pixels, 0, width, 0, 0, width, height);
  if (rgb != null) {
    pixels = NativeImageProcessor.applyRGBCurve(pixels, rgb, width, height);
  }
  if (!(red == null && green == null && blue == null)) {
    pixels = NativeImageProcessor.applyChannelCurves(pixels, red, green, blue, width, height);
  }
  try {
    outputImage.setPixels(pixels, 0, width, 0, 0, width, height);
  } catch (IllegalStateException ise) {
  }
  return outputImage;
}

private static void blurSoftware(Bitmap bitmap, float radius) {
  int width = bitmap.getWidth();
  int height = bitmap.getHeight();
  int[] pixels = new int[width * height];
  bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
  int[] halfResult = new int[width * height];
  int rad = (int) Math.ceil(radius);

    smallBitmap.getWidth(), smallBitmap.getHeight(),
    Bitmap.Config.ARGB_8888);
int numPixels = img.getWidth() * img.getHeight();
int[] pixels = new int[numPixels];
img.getPixels(pixels, 0, img.getWidth(), 0, 0, img.getWidth(), img.getHeight());

int w = bitmap.getWidth();
int h = bitmap.getHeight();
bitmap.getPixels(pix, 0, w, 0, 0, w, h);

int w = bitmap.getWidth();
int h = bitmap.getHeight();
bitmap.getPixels(pix, 0, w, 0, 0, w, h);

} else if (i == 2) {
  int w = overlay.getWidth();
  int h = overlay.getHeight();
  int[] pix = new int[w * h];
  overlay.getPixels(pix, 0, w, 0, 0, w, h);

int w = bitmap.getWidth();
int h = bitmap.getHeight();
bitmap.getPixels(pix, 0, w, 0, 0, w, h);