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Code Issues Releases Wiki Activity

Added the DownSampling to BlurTransformation

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wasabeef
2015-07-24 18:00:07 +09:00
parent 136a5512c0
commit cfe6dc313a
7 changed files with 45 additions and 26 deletions
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37
transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java
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@@ -24,27 +24,36 @@ import com.bumptech.glide.load.resource.bitmap.BitmapResource;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.support.v8.renderscript.Allocation;
import android.support.v8.renderscript.Element;
import android.support.v8.renderscript.RenderScript;
import android.support.v8.renderscript.ScriptIntrinsicBlur;
public class BlurTransformation implements Transformation<Bitmap> {
private static int MAX_RADIUS = 25;
private static int DEFAULT_DOWN_SAMPLING = 1;
private Context mContext;
private BitmapPool mBitmapPool;
private int mRadius;
private int mSampling;
public BlurTransformation(Context context, BitmapPool pool) {
this(context, pool, MAX_RADIUS);
this(context, pool, MAX_RADIUS, DEFAULT_DOWN_SAMPLING);
}
public BlurTransformation(Context context, BitmapPool pool, int radius) {
this(context, pool, radius, DEFAULT_DOWN_SAMPLING);
}
public BlurTransformation(Context context, BitmapPool pool, int radius, int sampling) {
mContext = context;
mBitmapPool = pool;
mRadius = radius;
mSampling = sampling;
}
@Override
@@ -53,22 +62,30 @@ public class BlurTransformation implements Transformation<Bitmap> {
int width = source.getWidth();
int height = source.getHeight();
int scaledWidth = width / mSampling;
int scaledHeight = height / mSampling;
Bitmap bitmap = mBitmapPool.get(width, height, Bitmap.Config.ARGB_8888);
Bitmap bitmap = mBitmapPool.get(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
if (bitmap == null) {
bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bitmap = Bitmap.createBitmap(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(bitmap);
canvas.drawBitmap(source, 0, 0, null);
canvas.scale(1 / (float) mSampling, 1 / (float) mSampling);
Paint paint = new Paint();
paint.setFlags(Paint.FILTER_BITMAP_FLAG);
canvas.drawBitmap(source, 0, 0, paint);
RenderScript rs = RenderScript.create(mContext);
Allocation overlayAlloc = Allocation.createFromBitmap(rs, bitmap);
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, overlayAlloc.getElement());
blur.setInput(overlayAlloc);
Allocation input = Allocation.createFromBitmap(rs, bitmap,
Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
Allocation output = Allocation.createTyped(rs, input.getType());
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
blur.setInput(input);
blur.setRadius(mRadius);
blur.forEach(overlayAlloc);
overlayAlloc.copyTo(bitmap);
blur.forEach(output);
output.copyTo(bitmap);
rs.destroy();
@@ -77,6 +94,6 @@ public class BlurTransformation implements Transformation<Bitmap> {
@Override
public String getId() {
return "BlurTransformation(radius=" + mRadius + ")";
return "BlurTransformation(radius=" + mRadius + ", sampling=" + mSampling + ")";
}
}