eightbitlab.com.blurview

Class RenderScriptBlur

java.lang.Object

eightbitlab.com.blurview.RenderScriptBlur

All Implemented Interfaces:

BlurAlgorithm

public final class RenderScriptBlur
extends java.lang.Object
implements BlurAlgorithm

Blur using RenderScript, processed on GPU. Requires API 17+

Constructor Summary

Constructors

Constructor and Description
RenderScriptBlur(android.content.Context context)

Method Summary

Modifier and Type	Method and Description
android.graphics.Bitmap	blur(android.graphics.Bitmap bitmap, float blurRadius)
boolean	canModifyBitmap()
void	destroy() Frees allocated resources
android.graphics.Bitmap.Config	getSupportedBitmapConfig() Retrieve the Bitmap.Config on which the BlurAlgorithm can actually work.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RenderScriptBlur

public RenderScriptBlur(android.content.Context context)

Parameters:

context - Context to create the RenderScript

Method Detail

blur

public final android.graphics.Bitmap blur(android.graphics.Bitmap bitmap,
                                          float blurRadius)

Specified by:

blur in interface BlurAlgorithm

Parameters:

bitmap - bitmap to blur

blurRadius - blur radius (1..25)

Returns:

blurred bitmap

destroy

public final void destroy()

Description copied from interface: BlurAlgorithm

Frees allocated resources

Specified by:

destroy in interface BlurAlgorithm

canModifyBitmap

public boolean canModifyBitmap()

Specified by:

canModifyBitmap in interface BlurAlgorithm

Returns:

true if this algorithm returns the same instance of bitmap as it accepted false if it creates a new instance.

If you return false from this method, you'll be responsible to swap bitmaps in your BlurAlgorithm.blur(Bitmap, float) implementation (assign input bitmap to your field and return the instance algorithm just blurred).

getSupportedBitmapConfig

public android.graphics.Bitmap.Config getSupportedBitmapConfig()

Description copied from interface: BlurAlgorithm

Retrieve the Bitmap.Config on which the BlurAlgorithm can actually work.

Specified by:

getSupportedBitmapConfig in interface BlurAlgorithm

Returns:

bitmap config supported by the given blur algorithm.