Example usage for android.renderscript Element U8

Introduction

In this page you can find the example usage for android.renderscript Element U8_4.

Prototype

public static Element U8_4(RenderScript rs)

Source Link

Usage

From source file:Main.java

/**
 * Return the histograms for each color channel (interleaved).
 *
 * @param rs a {@link RenderScript} context to use.
 * @param bmap a {@link Bitmap} to generate the histograms for.
 * @return an array containing NUM_CHANNELS * COLOR_BIT_DEPTH histogram bucket values, with
 * the color channels interleaved./* w  ww  .j a  v a  2  s  . co  m*/
 */
public static int[] calcHistograms(RenderScript rs, Bitmap bmap) {
    ScriptIntrinsicHistogram hist = ScriptIntrinsicHistogram.create(rs, Element.U8_4(rs));
    Allocation sums = Allocation.createSized(rs, Element.I32_4(rs), COLOR_BIT_DEPTH);

    // Setup input allocation (ARGB 8888 bitmap).
    Allocation input = Allocation.createFromBitmap(rs, bmap);

    hist.setOutput(sums);
    hist.forEach(input);
    int[] output = new int[COLOR_BIT_DEPTH * NUM_CHANNELS];
    sums.copyTo(output);
    return output;
}

From source file:Main.java

@SuppressLint("NewApi")
public static Bitmap NV21ToRGBABitmap(byte[] nv21, int width, int height, Context context) {

    TimingLogger timings = new TimingLogger(TIMING_LOG_TAG, "NV21ToRGBABitmap");

    Rect rect = new Rect(0, 0, width, height);

    try {// ww w.ja v  a  2  s  .co  m
        Class.forName("android.renderscript.Element$DataKind").getField("PIXEL_YUV");
        Class.forName("android.renderscript.ScriptIntrinsicYuvToRGB");
        byte[] imageData = nv21;
        if (mRS == null) {
            mRS = RenderScript.create(context);
            mYuvToRgb = ScriptIntrinsicYuvToRGB.create(mRS, Element.U8_4(mRS));
            Type.Builder tb = new Type.Builder(mRS,
                    Element.createPixel(mRS, Element.DataType.UNSIGNED_8, Element.DataKind.PIXEL_YUV));
            tb.setX(width);
            tb.setY(height);
            tb.setMipmaps(false);
            tb.setYuvFormat(ImageFormat.NV21);
            ain = Allocation.createTyped(mRS, tb.create(), Allocation.USAGE_SCRIPT);
            timings.addSplit("Prepare for ain");
            Type.Builder tb2 = new Type.Builder(mRS, Element.RGBA_8888(mRS));
            tb2.setX(width);
            tb2.setY(height);
            tb2.setMipmaps(false);
            aOut = Allocation.createTyped(mRS, tb2.create(), Allocation.USAGE_SCRIPT & Allocation.USAGE_SHARED);
            timings.addSplit("Prepare for aOut");
            bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            timings.addSplit("Create Bitmap");
        }
        ain.copyFrom(imageData);
        timings.addSplit("ain copyFrom");
        mYuvToRgb.setInput(ain);
        timings.addSplit("setInput ain");
        mYuvToRgb.forEach(aOut);
        timings.addSplit("NV21 to ARGB forEach");
        aOut.copyTo(bitmap);
        timings.addSplit("Allocation to Bitmap");
    } catch (Exception e) {
        YuvImage yuvImage = new YuvImage(nv21, ImageFormat.NV21, width, height, null);
        timings.addSplit("NV21 bytes to YuvImage");

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        yuvImage.compressToJpeg(rect, 90, baos);
        byte[] cur = baos.toByteArray();
        timings.addSplit("YuvImage crop and compress to Jpeg Bytes");

        bitmap = BitmapFactory.decodeByteArray(cur, 0, cur.length);
        timings.addSplit("Jpeg Bytes to Bitmap");
    }

    timings.dumpToLog();
    return bitmap;
}

From source file:Main.java

@SuppressLint("NewApi")
public static Bitmap NV21ToRGBABitmap(byte[] nv21, int width, int height, Context context) {

    TimingLogger timings = new TimingLogger(TIMING_LOG_TAG, "NV21ToRGBABitmap");

    Rect rect = new Rect(0, 0, width, height);

    try {/*from w w w. j ava2  s .  co m*/
        Class.forName("android.renderscript.Element$DataKind").getField("PIXEL_YUV");
        Class.forName("android.renderscript.ScriptIntrinsicYuvToRGB");
        byte[] imageData = nv21;
        if (mRS == null) {
            mRS = RenderScript.create(context);
            mYuvToRgb = ScriptIntrinsicYuvToRGB.create(mRS, Element.U8_4(mRS));
            Type.Builder tb = new Type.Builder(mRS,
                    Element.createPixel(mRS, Element.DataType.UNSIGNED_8, Element.DataKind.PIXEL_YUV));
            tb.setX(width);
            tb.setY(height);
            tb.setMipmaps(false);
            tb.setYuvFormat(ImageFormat.NV21);
            ain = Allocation.createTyped(mRS, tb.create(), Allocation.USAGE_SCRIPT);
            timings.addSplit("Prepare for ain");
            Type.Builder tb2 = new Type.Builder(mRS, Element.RGBA_8888(mRS));
            tb2.setX(width);
            tb2.setY(height);
            tb2.setMipmaps(false);
            aOut = Allocation.createTyped(mRS, tb2.create(), Allocation.USAGE_SCRIPT & Allocation.USAGE_SHARED);
            timings.addSplit("Prepare for aOut");
            bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
            timings.addSplit("Create Bitmap");
        }
        ain.copyFrom(imageData);
        timings.addSplit("ain copyFrom");
        mYuvToRgb.setInput(ain);
        timings.addSplit("setInput ain");
        mYuvToRgb.forEach(aOut);
        timings.addSplit("NV21 to ARGB forEach");
        aOut.copyTo(bitmap);
        timings.addSplit("Allocation to Bitmap");
    } catch (Exception e) {
        YuvImage yuvImage = new YuvImage(nv21, ImageFormat.NV21, width, height, null);
        timings.addSplit("NV21 bytes to YuvImage");

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        yuvImage.compressToJpeg(rect, 90, baos);
        byte[] cur = baos.toByteArray();
        timings.addSplit("YuvImage crop and compress to Jpeg Bytes");

        bitmap = BitmapFactory.decodeByteArray(cur, 0, cur.length);
        timings.addSplit("Jpeg Bytes to Bitmap");
    }

    timings.dumpToLog();
    return bitmap;
}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private static Bitmap blurBitmap(Bitmap src, float blurRadius, Context context) {
    RenderScript rs = RenderScript.create(context);
    Bitmap.Config conf = Bitmap.Config.ARGB_8888;
    Bitmap blurredBitmap = Bitmap.createBitmap(src.getWidth(), src.getHeight(), conf);

    final Allocation input = Allocation.createFromBitmap(rs, src, Allocation.MipmapControl.MIPMAP_NONE,
            Allocation.USAGE_SCRIPT);//from  w w  w.j a  v a2 s . c om
    final Allocation output = Allocation.createTyped(rs, input.getType());

    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(blurRadius);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(blurredBitmap);
    return blurredBitmap;
}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap fastBlur(Context context, Bitmap bm, int radius) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        Bitmap bitmap = bm.copy(bm.getConfig(), true);
        final RenderScript rs = RenderScript.create(context);
        final Allocation input = Allocation.createFromBitmap(rs, bm, Allocation.MipmapControl.MIPMAP_NONE,
                Allocation.USAGE_SCRIPT);
        final Allocation output = Allocation.createTyped(rs, input.getType());
        ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        script.setRadius(radius);/*from w w  w  .j  a va  2  s  .c o  m*/
        script.setInput(input);
        script.forEach(output);
        output.copyTo(bitmap);

        // clean up renderscript resources
        rs.destroy();
        input.destroy();
        output.destroy();
        script.destroy();

        return bitmap;
    }
    return null;
}

From source file:Main.java

@SuppressLint("NewApi")
public static Bitmap blur(Context context, Bitmap bitmap) {
    if (Build.VERSION.SDK_INT > 16) {
        bitmap = bitmap.copy(bitmap.getConfig(), true);

        final RenderScript rs = RenderScript.create(context);
        final Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
                Allocation.USAGE_SCRIPT);
        final Allocation output = Allocation.createTyped(rs, input.getType());
        final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        script.setRadius(24.f /* e.g. 3.f */);
        script.setInput(input);/*w  w w  .  ja v a  2s  .c  o m*/
        script.forEach(output);
        output.copyTo(bitmap);
    } else {
        bitmap = fastBlur(context, bitmap, 10);
    }
    return bitmap;
}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap fastblur(Context context, Bitmap sentBitmap, float radius) {

    if (Build.VERSION.SDK_INT > 16 && (!Build.MODEL.contains("google_sdk") && !Build.MODEL.contains("Emulator")
            && !Build.MODEL.contains("Android SDK") && !Build.FINGERPRINT.contains("vbox86p"))) {
        Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

        final RenderScript rs = RenderScript.create(context);
        final Allocation input = Allocation.createFromBitmap(rs, sentBitmap,
                Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
        final Allocation output = Allocation.createTyped(rs, input.getType());
        final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        script.setRadius(radius /* e.g. 3.f */);
        script.setInput(input);/*from w w w.  j  a v a  2s . c om*/
        script.forEach(output);
        output.copyTo(bitmap);
        return bitmap;
    }

    radius *= 0.1;
    return blurfast(sentBitmap, (int) radius);

    // Stack Blur v1.0 from
    // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
    //
    // 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>

    /*        try {
     Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
            
     radius *= 0.8;
     if (radius < 1) {
     return (null);
     }
            
     int w = bitmap.getWidth();
     int h = bitmap.getHeight();
            
     int[] pix = new int[w * h];
     Log.e("pix", w + " " + h + " " + pix.length);
     bitmap.getPixels(pix, 0, w, 0, 0, w, h);
            
     int wm = w - 1;
     int hm = h - 1;
     int wh = w * h;
     int div = (int) (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 = (int) (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 = (int) -radius; i <= radius; i++) {
     p = pix[yi + Math.min(wm, Math.max(i, 0))];
     sir = stack[((int) (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 = (int) 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 = (int) (stackpointer - radius + div);
     sir = stack[stackstart % div];
            
     routsum -= sir[0];
     goutsum -= sir[1];
     boutsum -= sir[2];
            
     if (y == 0) {
     vmin[x] = (int) 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 = (int) (-radius * w);
     for (i = (int) -radius; i <= radius; i++) {
     yi = Math.max(0, yp) + x;
            
     sir = stack[((int) (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 = (int) 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 = (int) (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);
     } catch (OutOfMemoryError ex) {
     return sentBitmap;
     }*/
}

From source file:Main.java

/**
 * Apply a blur to a Bitmap//from  w  w  w  . j  a v  a  2  s .co m
 *
 * @param context    Application context
 * @param sentBitmap Bitmap to be converted
 * @param radius     Desired Radius, 0 &lt; r &lt; 25
 * @return a copy of the image with a blur
 */
@SuppressLint("InlinedApi")
public static Bitmap blur(Context context, Bitmap sentBitmap, int radius) {

    if (radius < 0) {
        radius = 0;
        if (DEBUG) {

        }
    } else if (radius > 25) {
        radius = 25;
        if (DEBUG) {

        }
    }

    if (Build.VERSION.SDK_INT > 16) {
        Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

        final RenderScript rs = RenderScript.create(context);
        final Allocation input = Allocation.createFromBitmap(rs, sentBitmap,
                Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
        final Allocation output = Allocation.createTyped(rs, input.getType());
        final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        script.setRadius(radius /* e.g. 3.f */);
        script.setInput(input);
        script.forEach(output);
        output.copyTo(bitmap);
        return bitmap;
    }

    // Stack Blur v1.0 from
    // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
    //
    // 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>

    Bitmap 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];
    Log.e("pix", w + " " + h + " " + pix.length);
    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;
        }
    }

    Log.e("pix", w + " " + h + " " + pix.length);
    bitmap.setPixels(pix, 0, w, 0, 0, w, h);
    return (bitmap);
}

From source file:Main.java

/**
 * Create bitmap with blur effect. Use support render script.
 *
 * @param context// w  w w .  j  a v  a 2  s .c om
 *            application context
 * @param bitmap
 *            PNG bitmap to convert
 * @param radius
 *            the radius of the blur. Supported range 0 < radius <= 25
 * @return bitmap that has been added blur effect
 */
private static Bitmap addBlurEffect(Context context, Bitmap bitmap, int radius) {
    if ((radius < 0) || (radius > 25)) {
        throw new IllegalArgumentException("Blur radius must be in range [0,25]");
    }

    if (null == bitmap) {
        return null;
    }

    /**
     * Support render script library has bug with blur effect on down
     * versions than <code>Build.VERSION_CODES.JELLY_BEAN</code>. To fix
     * this bug need convert bitmap format to
     * <code>Bitmap.Config.ARGB_8888</code>.
     */
    if (android.os.Build.VERSION.SDK_INT <= android.os.Build.VERSION_CODES.JELLY_BEAN) {
        bitmap = convertBitmapFormatToARGB888(bitmap);
    }

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

    final RenderScript rs = RenderScript.create(context);
    final Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
            Allocation.USAGE_SCRIPT);
    final Allocation output = Allocation.createTyped(rs, input.getType());
    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(radius);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(blurBitmap);

    return blurBitmap;
}

From source file:com.truebanana.bitmap.BitmapUtils.java

@SuppressLint("NewApi")
public static Bitmap blur(Context context, Bitmap bitmap, float scale, int radius) {
    if (SystemUtils.getSDKVersion() >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        int width = Math.round(bitmap.getWidth() * scale);
        int height = Math.round(bitmap.getHeight() * scale);

        bitmap = Bitmap.createScaledBitmap(bitmap, width, height, false);
        Bitmap processedBitmap = Bitmap.createBitmap(bitmap);

        RenderScript rs = RenderScript.create(context);
        ScriptIntrinsicBlur sib = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        Allocation tmpIn = Allocation.createFromBitmap(rs, bitmap);
        Allocation tmpOut = Allocation.createFromBitmap(rs, processedBitmap);
        sib.setRadius(radius);/* w  w w .j  a va 2 s.c  o m*/
        sib.setInput(tmpIn);
        sib.forEach(tmpOut);
        tmpOut.copyTo(processedBitmap);

        return processedBitmap;
    } else {
        int width = Math.round(bitmap.getWidth() * scale);
        int height = Math.round(bitmap.getHeight() * scale);
        bitmap = Bitmap.createScaledBitmap(bitmap, width, height, false);

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

        if (radius < 1) {
            return null;
        }

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

        int[] pix = new int[w * h];
        processedBitmap.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;
            }
        }
        processedBitmap.setPixels(pix, 0, w, 0, 0, w, h);

        return processedBitmap;
    }
}

Example usage for android.renderscript Element U8_4

Introduction

Prototype

Usage