Example usage for android.graphics Bitmap setPixels

Introduction

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

Prototype

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

Source Link

Document

Replace pixels in the bitmap with the colors in the array.

Usage

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?/*from  ww w .  j  a  v a  2 s  . c o m*/
 * 
 * @param bitmap
 *            
 * @return ??
 */
public static Bitmap nostalgic(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);
    int pixColor = 0;
    int pixR = 0;
    int pixG = 0;
    int pixB = 0;
    int newR = 0;
    int newG = 0;
    int newB = 0;
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    for (int i = 0; i < height; i++) {
        for (int k = 0; k < width; k++) {
            pixColor = pixels[width * i + k];
            pixR = Color.red(pixColor);
            pixG = Color.green(pixColor);
            pixB = Color.blue(pixColor);
            newR = (int) (0.393 * pixR + 0.769 * pixG + 0.189 * pixB);
            newG = (int) (0.349 * pixR + 0.686 * pixG + 0.168 * pixB);
            newB = (int) (0.272 * pixR + 0.534 * pixG + 0.131 * pixB);
            int newColor = Color.argb(255, newR > 255 ? 255 : newR, newG > 255 ? 255 : newG,
                    newB > 255 ? 255 : newB);
            pixels[width * i + k] = newColor;
        }
    }
    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

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From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?/*ww  w  .  j a  v a2 s . com*/
 * 
 * @param bitmap
 *            
 * @return ??
 */
public static Bitmap film(Bitmap bitmap) {
    // RGBA
    final int MAX_VALUE = 255;
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);

    int pixR = 0;
    int pixG = 0;
    int pixB = 0;

    int pixColor = 0;

    int newR = 0;
    int newG = 0;
    int newB = 0;

    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    int pos = 0;
    for (int i = 1, length = height - 1; i < length; i++) {
        for (int k = 1, len = width - 1; k < len; k++) {
            pos = i * width + k;
            pixColor = pixels[pos];

            pixR = Color.red(pixColor);
            pixG = Color.green(pixColor);
            pixB = Color.blue(pixColor);

            newR = MAX_VALUE - pixR;
            newG = MAX_VALUE - pixG;
            newB = MAX_VALUE - pixB;

            newR = Math.min(MAX_VALUE, Math.max(0, newR));
            newG = Math.min(MAX_VALUE, Math.max(0, newG));
            newB = Math.min(MAX_VALUE, Math.max(0, newB));

            pixels[pos] = Color.argb(MAX_VALUE, newR, newG, newB);
        }
    }

    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

---

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?/*from   www. jav a  2s  . c  o m*/
 * 
 * @param bitmap
 *            
 * @return ??
 */
public static Bitmap emboss(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);

    int pixR = 0;
    int pixG = 0;
    int pixB = 0;

    int pixColor = 0;

    int newR = 0;
    int newG = 0;
    int newB = 0;

    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    int pos = 0;
    for (int i = 1, length = height - 1; i < length; i++) {
        for (int k = 1, len = width - 1; k < len; k++) {
            pos = i * width + k;
            pixColor = pixels[pos];

            pixR = Color.red(pixColor);
            pixG = Color.green(pixColor);
            pixB = Color.blue(pixColor);

            pixColor = pixels[pos + 1];
            newR = Color.red(pixColor) - pixR + 127;
            newG = Color.green(pixColor) - pixG + 127;
            newB = Color.blue(pixColor) - pixB + 127;

            newR = Math.min(255, Math.max(0, newR));
            newG = Math.min(255, Math.max(0, newG));
            newB = Math.min(255, Math.max(0, newB));

            pixels[pos] = Color.argb(255, newR, newG, newB);
        }
    }

    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

---

From source file:com.hotstar.player.adplayer.player.PlayerFragment.java

/**
 * Initialize the player fragment by setting up views, media player and
 * feature managers/*from w  w w.  j  a v a  2 s.  c om*/
 * 
 * @param intent
 *            the intent that contains the video item
 */
private void initialize(Intent intent) {
    videoItem = (VideoItem) intent.getExtras().getSerializable("CONTENT_INFO");
    AdVideoApplication.logger.i(LOG_TAG + "#initialize",
            "Initializing the media player with item [" + videoItem.getTitle() + "].");

    playerClickableAdFragment = (PlayerClickableAdFragment) getActivity().getSupportFragmentManager()
            .findFragmentById(R.id.playerClickInfo);
    playerFrame = (FrameLayout) playerFragmentView.findViewById(R.id.playerFrame);

    ViewGroup controlBarView = (ViewGroup) playerFragmentView.findViewById(R.id.ControlBarItem);
    controlBar = new PlayerControlBar(getActivity(), controlBarView);

    // ViewGroup controlTopBarView = (ViewGroup) playerFragmentView.findViewById(R.id.ControlTopBarItem);
    // controlTopBar = new PlayerControlTopBar(getActivity(), controlTopBarView);

    ViewGroup controlAdBarView = (ViewGroup) playerFragmentView.findViewById(R.id.AdControlBarItem);
    controlAdBar = new PlayerAdControlBar(getActivity(), controlAdBarView);

    spinner = (ProgressBar) playerFragmentView.findViewById(R.id.pbBufferingSpinner);

    overlayAdImageView = (ImageView) playerFragmentView.findViewById(R.id.overlayAdImageView);
    overlayAdGifView = (GifImageView) playerFragmentView.findViewById(R.id.overlayAdGifView);
    overlayAdGifView.setOnFrameAvailable(new GifImageView.OnFrameAvailable() {
        @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1)
        @Override
        public Bitmap onFrameAvailable(Bitmap bitmap) {
            return bitmap;
        }
    });

    java.io.InputStream is;
    is = mActivity.getResources().openRawResource(R.drawable.vpaid_ad_icon);

    vpaidAdIconGifView = (GifImageView) playerFragmentView.findViewById(R.id.vpaidAdIconGifView);
    vpaidAdIconGifView.setBytes(BytesManager.getBytes(is));
    vpaidAdIconGifView.setOnFrameAvailable(new GifImageView.OnFrameAvailable() {
        @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1)
        @Override
        public Bitmap onFrameAvailable(Bitmap src) {
            if (src == null)
                return src;

            int width = src.getWidth();
            int height = src.getHeight();
            Bitmap b = src.copy(Bitmap.Config.ARGB_8888, true);
            b.setHasAlpha(true);

            int[] pixels = new int[width * height];
            src.getPixels(pixels, 0, width, 0, 0, width, height);

            for (int i = 0; i < width * height; i++) {
                if ((pixels[i] == WHITE_COLOR) || (pixels[i] == BLACK_COLOR)) {
                    pixels[i] = 0;
                }
            }

            b.setPixels(pixels, 0, width, 0, 0, width, height);
            return b;
        }
    });
    vpaidAdIconGifView.setVisibility(View.INVISIBLE);
    vpaidAdIconGifView.setOnClickListener(vPaidADIconClickListener);

    thumbnailPlayImageView = (ImageView) playerFragmentView.findViewById(R.id.thumbnailPlayImageView);
    thumbnailPlayImageView.setVisibility(View.INVISIBLE);
    thumbnailImageView = (ImageView) playerFragmentView.findViewById(R.id.thumbnailImageView);
    thumbnailImageView.setVisibility(View.INVISIBLE);
    thumbnailImageView.setOnClickListener(thumbnailViewClickListener);
    OverlayAdResourceManager.getInstance().preloadImage(videoItem.getThumbnail().getLargeThumbnailUrl());

    //      audioProfile = (TextView) playerFragmentView.findViewById(R.id.audioTextView);
    //      audioProfile.setText(R.string.qosAudioProfile);
    //      audioProfile.setVisibility(View.INVISIBLE);
    //
    //      _ccButton = (ImageButton) playerFragmentView.findViewById(R.id.sbPlayerControlCC);
    //      _rewindButton = (ImageButton) playerFragmentView.findViewById(R.id.playerRewind);
    ((CustomFrameLayout) playerFrame).addOnSizeChangeListener(new OnSizeChangeListener() {

        @Override
        public void onSizeChanged() {
            // Scale player, since container size has changed.
            handler.post(new Runnable() {

                @Override
                public void run() {
                    setPlayerViewSize(savedMovieWidth, savedMovieHeight);
                }
            });
        }
    });

    createPlayer();
    setupViews();
    createManagers();
    prepareMedia();
}

---

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ??/*from   w w w  .j  ava  2s . c o m*/
 * 
 * @param delta
 *            ??(0,24)
 * @return
 */
public static Bitmap adjustTone(Bitmap src, int delta) {
    if (delta >= 24 || delta <= 0) {
        return null;
    }
    // 
    int[] gauss = new int[] { 1, 2, 1, 2, 4, 2, 1, 2, 1 };
    int width = src.getWidth();
    int height = src.getHeight();
    Bitmap bitmap = Bitmap.createBitmap(width, height, Config.RGB_565);

    int pixR = 0;
    int pixG = 0;
    int pixB = 0;
    int pixColor = 0;
    int newR = 0;
    int newG = 0;
    int newB = 0;
    int idx = 0;
    int[] pixels = new int[width * height];

    src.getPixels(pixels, 0, width, 0, 0, width, height);
    for (int i = 1, length = height - 1; i < length; i++) {
        for (int k = 1, len = width - 1; k < len; k++) {
            idx = 0;
            for (int m = -1; m <= 1; m++) {
                for (int n = -1; n <= 1; n++) {
                    pixColor = pixels[(i + m) * width + k + n];
                    pixR = Color.red(pixColor);
                    pixG = Color.green(pixColor);
                    pixB = Color.blue(pixColor);

                    newR += (pixR * gauss[idx]);
                    newG += (pixG * gauss[idx]);
                    newB += (pixB * gauss[idx]);
                    idx++;
                }
            }
            newR /= delta;
            newG /= delta;
            newB /= delta;
            newR = Math.min(255, Math.max(0, newR));
            newG = Math.min(255, Math.max(0, newG));
            newB = Math.min(255, Math.max(0, newB));
            pixels[i * width + k] = Color.argb(255, newR, newG, newB);
            newR = 0;
            newG = 0;
            newB = 0;
        }
    }
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}

---

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ??//from   www . j  a va 2s  . com
 * 
 * @param bitmap
 *            
 * @return ???
 */
public static Bitmap sharpen(Bitmap bitmap) {
    // 
    int[] laplacian = new int[] { -1, -1, -1, -1, 9, -1, -1, -1, -1 };

    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);

    int pixR = 0;
    int pixG = 0;
    int pixB = 0;

    int pixColor = 0;

    int newR = 0;
    int newG = 0;
    int newB = 0;

    int idx = 0;
    float alpha = 0.3F;
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    for (int i = 1, length = height - 1; i < length; i++) {
        for (int k = 1, len = width - 1; k < len; k++) {
            idx = 0;
            for (int m = -1; m <= 1; m++) {
                for (int n = -1; n <= 1; n++) {
                    pixColor = pixels[(i + n) * width + k + m];
                    pixR = Color.red(pixColor);
                    pixG = Color.green(pixColor);
                    pixB = Color.blue(pixColor);

                    newR = newR + (int) (pixR * laplacian[idx] * alpha);
                    newG = newG + (int) (pixG * laplacian[idx] * alpha);
                    newB = newB + (int) (pixB * laplacian[idx] * alpha);
                    idx++;
                }
            }

            newR = Math.min(255, Math.max(0, newR));
            newG = Math.min(255, Math.max(0, newG));
            newB = Math.min(255, Math.max(0, newB));

            pixels[i * width + k] = Color.argb(255, newR, newG, newB);
            newR = 0;
            newG = 0;
            newB = 0;
        }
    }

    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

---

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?/*from ww  w  .j a v  a  2 s  .c  o  m*/
 * 
 * @param bitmap
 *            
 * @return ??
 */
public static Bitmap soften(Bitmap bitmap) {
    // 
    int[] gauss = new int[] { 1, 2, 1, 2, 4, 2, 1, 2, 1 };

    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);

    int pixR = 0;
    int pixG = 0;
    int pixB = 0;

    int pixColor = 0;

    int newR = 0;
    int newG = 0;
    int newB = 0;

    int delta = 16; // ?

    int idx = 0;
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    for (int i = 1, length = height - 1; i < length; i++) {
        for (int k = 1, len = width - 1; k < len; k++) {
            idx = 0;
            for (int m = -1; m <= 1; m++) {
                for (int n = -1; n <= 1; n++) {
                    pixColor = pixels[(i + m) * width + k + n];
                    pixR = Color.red(pixColor);
                    pixG = Color.green(pixColor);
                    pixB = Color.blue(pixColor);

                    newR = newR + pixR * gauss[idx];
                    newG = newG + pixG * gauss[idx];
                    newB = newB + pixB * gauss[idx];
                    idx++;
                }
            }

            newR /= delta;
            newG /= delta;
            newB /= delta;

            newR = Math.min(255, Math.max(0, newR));
            newG = Math.min(255, Math.max(0, newG));
            newB = Math.min(255, Math.max(0, newB));

            pixels[i * width + k] = Color.argb(255, newR, newG, newB);

            newR = 0;
            newG = 0;
            newB = 0;
        }
    }

    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

---

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?/*from   w w w . ja  v  a  2 s  .co m*/
 * 
 * @param bitmap
 *            
 * @param centerX
 *            ?X?
 * @param centerY
 *            ?Y?
 * @return ??
 */
public static Bitmap sunshine(Bitmap bitmap, int centerX, int centerY) {
    final int width = bitmap.getWidth();
    final int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);

    int pixR = 0;
    int pixG = 0;
    int pixB = 0;

    int pixColor = 0;

    int newR = 0;
    int newG = 0;
    int newB = 0;
    int radius = Math.min(centerX, centerY);

    final float strength = 150F; //  100~150
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    int pos = 0;
    for (int i = 1, length = height - 1; i < length; i++) {
        for (int k = 1, len = width - 1; k < len; k++) {
            pos = i * width + k;
            pixColor = pixels[pos];

            pixR = Color.red(pixColor);
            pixG = Color.green(pixColor);
            pixB = Color.blue(pixColor);

            newR = pixR;
            newG = pixG;
            newB = pixB;

            // ????
            int distance = (int) (Math.pow((centerY - i), 2) + Math.pow(centerX - k, 2));
            if (distance < radius * radius) {
                // ??
                int result = (int) (strength * (1.0 - Math.sqrt(distance) / radius));
                newR = pixR + result;
                newG = pixG + result;
                newB = pixB + result;
            }

            newR = Math.min(255, Math.max(0, newR));
            newG = Math.min(255, Math.max(0, newG));
            newB = Math.min(255, Math.max(0, newB));

            pixels[pos] = Color.argb(255, newR, newG, newB);
        }
    }

    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

---

From source file:Main.java

/**
 * http://stackoverflow.com/questions/2067955/fast-bitmap-blur-for-android-sdk
 * http://incubator.quasimondo.com//*from w ww .j  a  va  2  s.c o m*/
 *
 * @param sentBitmap
 * @param scale
 * @param radius
 * @return
 */
public static Bitmap fastBlur(Bitmap sentBitmap, float scale, int radius) {
    int width = Math.round(sentBitmap.getWidth() * scale);
    int height = Math.round(sentBitmap.getHeight() * scale);
    sentBitmap = Bitmap.createScaledBitmap(sentBitmap, width, height, false);

    Bitmap img = sentBitmap.copy(sentBitmap.getConfig(), true);

    if (radius < 1) {
        return null;
    }
    int w = img.getWidth();
    int h = img.getHeight();

    int[] pix = new int[w * h];
    img.getPixels(pix, 0, w, 0, 0, w, h);

    int wm = w - 1;
    int hm = h - 1;
    int wh = w * h;
    int div = radius + radius + 1;

    int r[] = new int[wh];
    int g[] = new int[wh];
    int b[] = new int[wh];
    int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
    int vmin[] = new int[Math.max(w, h)];

    int divsum = (div + 1) >> 1;
    divsum *= divsum;
    int dv[] = new int[256 * divsum];
    for (i = 0; i < 256 * divsum; i++) {
        dv[i] = (i / divsum);
    }

    yw = yi = 0;

    int[][] stack = new int[div][3];
    int stackpointer;
    int stackstart;
    int[] sir;
    int rbs;
    int r1 = radius + 1;
    int routsum, goutsum, boutsum;
    int rinsum, ginsum, binsum;

    for (y = 0; y < h; y++) {
        rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
        for (i = -radius; i <= radius; i++) {
            p = pix[yi + Math.min(wm, Math.max(i, 0))];
            sir = stack[i + radius];
            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);
            rbs = r1 - Math.abs(i);
            rsum += sir[0] * rbs;
            gsum += sir[1] * rbs;
            bsum += sir[2] * rbs;
            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
            }
        }
        stackpointer = radius;

        for (x = 0; x < w; x++) {

            r[yi] = dv[rsum];
            g[yi] = dv[gsum];
            b[yi] = dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];

            if (y == 0) {
                vmin[x] = Math.min(x + radius + 1, wm);
            }
            p = pix[yw + vmin[x]];

            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[(stackpointer) % div];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];

            yi++;
        }
        yw += w;
    }
    for (x = 0; x < w; x++) {
        rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
        yp = -radius * w;
        for (i = -radius; i <= radius; i++) {
            yi = Math.max(0, yp) + x;

            sir = stack[i + radius];

            sir[0] = r[yi];
            sir[1] = g[yi];
            sir[2] = b[yi];

            rbs = r1 - Math.abs(i);

            rsum += r[yi] * rbs;
            gsum += g[yi] * rbs;
            bsum += b[yi] * rbs;

            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
            }

            if (i < hm) {
                yp += w;
            }
        }
        yi = x;
        stackpointer = radius;
        for (y = 0; y < h; y++) {
            pix[yi] = 0xff000000 | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];

            if (x == 0) {
                vmin[y] = Math.min(y + r1, hm) * w;
            }
            p = x + vmin[y];

            sir[0] = r[p];
            sir[1] = g[p];
            sir[2] = b[p];

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[stackpointer];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];

            yi += w;
        }
    }

    img.setPixels(pix, 0, w, 0, 0, w, h);

    return img;
}

---

From source file:Main.java

public static Bitmap createBlurBmpWithCommonCompute(Bitmap srcBmp, int radius) {
    // Stack Blur v1.0 from
    // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
    ////from   www  . j  a va2s . c  om
    // Java Author: Mario Klingemann <mario at quasimondo.com>
    // http://incubator.quasimondo.com
    // created Feburary 29, 2004
    // Android port : Yahel Bouaziz <yahel at kayenko.com>
    // http://www.kayenko.com
    // ported april 5th, 2012

    // This is a compromise between Gaussian Blur and Box blur
    // It creates much better looking blurs than Box Blur, but is
    // 7x faster than my Gaussian Blur implementation.
    //
    // I called it Stack Blur because this describes best how this
    // filter works internally: it creates a kind of moving stack
    // of colors whilst scanning through the image. Thereby it
    // just has to add one new block of color to the right side
    // of the stack and remove the leftmost color. The remaining
    // colors on the topmost layer of the stack are either added on
    // or reduced by one, depending on if they are on the right or
    // on the left side of the stack.
    //
    // If you are using this algorithm in your code please add
    // the following line:
    //
    // Stack Blur Algorithm by Mario Klingemann <mario@quasimondo.com>

    if (radius < 1)
        return null;

    Bitmap bitmap = srcBmp.copy(srcBmp.getConfig(), true);

    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    int[] pix = new int[w * h];
    bitmap.getPixels(pix, 0, w, 0, 0, w, h);

    int wm = w - 1;
    int hm = h - 1;
    int wh = w * h;
    int div = radius + radius + 1;

    int r[] = new int[wh];
    int g[] = new int[wh];
    int b[] = new int[wh];
    int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
    int vmin[] = new int[Math.max(w, h)];

    int divsum = (div + 1) >> 1;
    divsum *= divsum;
    int dv[] = new int[256 * divsum];
    for (i = 0; i < 256 * divsum; i++) {
        dv[i] = (i / divsum);
    }

    yw = yi = 0;

    int[][] stack = new int[div][3];
    int stackpointer;
    int stackstart;
    int[] sir;
    int rbs;
    int r1 = radius + 1;
    int routsum, goutsum, boutsum;
    int rinsum, ginsum, binsum;

    for (y = 0; y < h; y++) {
        rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
        for (i = -radius; i <= radius; i++) {
            p = pix[yi + Math.min(wm, Math.max(i, 0))];
            sir = stack[i + radius];
            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);
            rbs = r1 - Math.abs(i);
            rsum += sir[0] * rbs;
            gsum += sir[1] * rbs;
            bsum += sir[2] * rbs;
            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
            }
        }
        stackpointer = radius;

        for (x = 0; x < w; x++) {
            r[yi] = dv[rsum];
            g[yi] = dv[gsum];
            b[yi] = dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];

            if (y == 0) {
                vmin[x] = Math.min(x + radius + 1, wm);
            }
            p = pix[yw + vmin[x]];

            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[(stackpointer) % div];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];

            yi++;
        }
        yw += w;
    }
    for (x = 0; x < w; x++) {
        rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
        yp = -radius * w;
        for (i = -radius; i <= radius; i++) {
            yi = Math.max(0, yp) + x;

            sir = stack[i + radius];

            sir[0] = r[yi];
            sir[1] = g[yi];
            sir[2] = b[yi];

            rbs = r1 - Math.abs(i);

            rsum += r[yi] * rbs;
            gsum += g[yi] * rbs;
            bsum += b[yi] * rbs;

            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
            }

            if (i < hm) {
                yp += w;
            }
        }
        yi = x;
        stackpointer = radius;
        for (y = 0; y < h; y++) {
            // Preserve alpha channel: ( 0xff000000 & pix[yi] )
            pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];

            if (x == 0) {
                vmin[y] = Math.min(y + r1, hm) * w;
            }
            p = x + vmin[y];

            sir[0] = r[p];
            sir[1] = g[p];
            sir[2] = b[p];

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[stackpointer];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];

            yi += w;
        }
    }
    bitmap.setPixels(pix, 0, w, 0, 0, w, h);

    return bitmap;
}

---

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