public static Drawable createBlurredImageFromBitmap(
Bitmap bitmap, Context context, int inSampleSize) {
RenderScript rs = RenderScript.create(context);
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = inSampleSize;
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] imageInByte = stream.toByteArray();
ByteArrayInputStream bis = new ByteArrayInputStream(imageInByte);
Bitmap blurTemplate = BitmapFactory.decodeStream(bis, null, options);
final android.support.v8.renderscript.Allocation input =
android.support.v8.renderscript.Allocation.createFromBitmap(rs, blurTemplate);
final android.support.v8.renderscript.Allocation output =
android.support.v8.renderscript.Allocation.createTyped(rs, input.getType());
final android.support.v8.renderscript.ScriptIntrinsicBlur script =
android.support.v8.renderscript.ScriptIntrinsicBlur.create(
rs, android.support.v8.renderscript.Element.U8_4(rs));
script.setRadius(8f);
script.setInput(input);
script.forEach(output);
output.copyTo(blurTemplate);
Drawable dr = new BitmapDrawable(blurTemplate);
return dr;
}
private static void blurRenderScript(Bitmap bitmap, float radius) {
Allocation inAllocation =
Allocation.createFromBitmap(
renderScript, bitmap, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
Allocation outAllocation = Allocation.createTyped(renderScript, inAllocation.getType());
blurShader.setRadius(radius);
blurShader.setInput(inAllocation);
blurShader.forEach(outAllocation);
outAllocation.copyTo(bitmap);
}
public static Bitmap blurBitmap(Bitmap bitmapToBlur, Context context) {
RenderScript rs = RenderScript.create(context);
// use this constructor for best performance, because it uses USAGE_SHARED mode which reuses
// memory
final Allocation input = Allocation.createFromBitmap(rs, bitmapToBlur);
final Allocation output = Allocation.createTyped(rs, input.getType());
final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
script.setRadius(16f);
script.setInput(input);
script.forEach(output);
output.copyTo(bitmapToBlur);
return bitmapToBlur;
}
public static Shadow generateShadow(View view, float elevation) {
if (!software && renderScript == null) {
try {
renderScript = RenderScript.create(view.getContext());
blurShader = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript));
} catch (RSRuntimeException ignore) {
software = true;
}
}
CornerView cornerView = (CornerView) view;
int e = (int) Math.ceil(elevation);
int c = Math.max(e, cornerView.getCornerRadius());
Bitmap bitmap;
bitmap = Bitmap.createBitmap(e * 2 + 2 * c + 1, e * 2 + 2 * c + 1, Bitmap.Config.ARGB_8888);
Canvas shadowCanvas = new Canvas(bitmap);
paint.setStyle(Paint.Style.FILL);
paint.setColor(0xff000000);
roundRect.set(e, e, bitmap.getWidth() - e, bitmap.getHeight() - e);
shadowCanvas.drawRoundRect(roundRect, c, c, paint);
blur(bitmap, elevation / 2);
return new NinePatchShadow(bitmap, elevation, c);
}
private Bitmap BlurImage(Bitmap input, int radius) {
RenderScript rsScript = RenderScript.create(getActivity());
Allocation alloc = Allocation.createFromBitmap(rsScript, input);
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rsScript, Element.U8_4(rsScript));
blur.setRadius(radius);
blur.setInput(alloc);
Bitmap result = Bitmap.createBitmap(input.getWidth(), input.getHeight(), input.getConfig());
Allocation outAlloc = Allocation.createFromBitmap(rsScript, result);
blur.forEach(outAlloc);
outAlloc.copyTo(result);
rsScript.destroy();
return result;
}
@SuppressLint("NewApi")
public static Bitmap blur(Context context, Bitmap sentBitmap, int radius) {
Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
final RenderScript rs = RenderScript.create(context);
final Allocation input =
Allocation.createFromBitmap(
rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
final Allocation output = Allocation.createTyped(rs, input.getType());
final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
script.setRadius(radius);
script.setInput(input);
script.forEach(output);
output.copyTo(bitmap);
return bitmap;
}
protected void blur() {
mBlurInput.copyFrom(mBitmapToBlur);
mBlurScript.setInput(mBlurInput);
mBlurScript.forEach(mBlurOutput);
mBlurOutput.copyTo(mBlurredBitmap);
}
private void initRenderScript(Context context) {
mRenderScript = RenderScript.create(context);
mBlurScript = ScriptIntrinsicBlur.create(mRenderScript, Element.U8_4(mRenderScript));
mBlurScript.setRadius(mBlurRadius);
}
void setBlurRadius(int radius) {
mBlurScript.setRadius(radius);
}
