Bitmap Blurring using RenderScript Framework of Android

Here's the code to blur a bitmap using the RenderScript framework of Android.

public Bitmap blur(Context context, Bitmap image) {

int width = Math.round(image.getWidth() * BITMAP_SCALE);

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int height = Math.round(image.getHeight() * BITMAP_SCALE);

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Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);

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Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);

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RenderScript rs = RenderScript.create(context);

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ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

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Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);

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Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);

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theIntrinsic.setRadius(BLUR_RADIUS);

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theIntrinsic.setInput(tmpIn);

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theIntrinsic.forEach(tmpOut);

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tmpOut.copyTo(outputBitmap);

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return outputBitmap;

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}