33 lines
1.2 KiB
Java
33 lines
1.2 KiB
Java
package net.nullsum.audinaut.util;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.renderscript.Allocation;
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import android.renderscript.Element;
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import android.renderscript.RenderScript;
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import android.renderscript.ScriptIntrinsicBlur;
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class BlurBuilder {
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private static final float BITMAP_SCALE = 0.4f;
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private static final float BLUR_RADIUS = 25f;
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public static Bitmap blur(Context context, Bitmap image) {
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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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}
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}
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