RenderScriptColorFilter.java

package at.favre.lib.dali.builder.processor;

import android.graphics.Bitmap;
import android.support.v8.renderscript.Allocation;
import android.support.v8.renderscript.Element;
import android.support.v8.renderscript.Matrix4f;
import android.support.v8.renderscript.RSRuntimeException;
import android.support.v8.renderscript.RenderScript;
import android.support.v8.renderscript.ScriptIntrinsicColorMatrix;

/**
 * Created by PatrickF on 03.06.2014.
 */
public class RenderScriptColorFilter  implements IBitmapProcessor {
	private RenderScript rs;
	private float[] data;

	public RenderScriptColorFilter(RenderScript rs,float[] matrix) {
		this.rs = rs;
		this.data = matrix;
	}

	@Override
	public Bitmap manipulate(Bitmap bitmapOriginal) {
			try {
				Allocation input = Allocation.createFromBitmap(rs, bitmapOriginal);
				final Allocation output = Allocation.createTyped(rs, input.getType());
				ScriptIntrinsicColorMatrix mScript = ScriptIntrinsicColorMatrix.create(rs, Element.U8(rs));
				Matrix4f matrix4f = new Matrix4f(data);
				mScript.setColorMatrix(matrix4f);
				output.copyTo(bitmapOriginal);
			} catch (RSRuntimeException e) {
				//fallback
			}
		return bitmapOriginal;
	}

	@Override
	public String getProcessorTag() {
		return this.getClass().getSimpleName()+": ";
	}
}