public Bitmap Transform(Bitmap source)
{
// Load a clean bitmap and work from that.
var originalBitmap = source;
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap = null;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
var rs = RenderScript.Create(Context);
// Allocate memory for Renderscript to work with
var input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull,
AllocationUsage.Script);
var output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
var script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(Radius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
source.Recycle();
return(blurredBitmap);
}
public static Drawable CreateBlurredImageFromBitmap(Bitmap bm, Context context, int size)
{
var rs = RenderScript.Create(context);
var options = new BitmapFactory.Options
{
InSampleSize = size
};
byte[] imageInBytes;
using (var stream = new MemoryStream())
{
bm.Compress(Bitmap.CompressFormat.Jpeg, 100, stream);
imageInBytes = stream.ToArray();
}
var blurred = BitmapFactory.DecodeByteArray(imageInBytes, 0, imageInBytes.Length);
var input = Allocation.CreateFromBitmap(rs, blurred);
var output = Allocation.CreateTyped(rs, input.Type);
var script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetRadius(8f);
script.SetInput(input);
script.ForEach(output);
output.CopyTo(blurred);
return(new BitmapDrawable(context.Resources, blurred));
}
public override Bitmap Operations(Bitmap source, Bitmap result)
{
Bitmap originalBitmap = source;
Bitmap blurredBitmap = null;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
var rs = RenderScript.Create(mContext);
var input = Allocation.CreateFromBitmap(rs, originalBitmap,
Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
var output = Allocation.CreateTyped(rs, input.Type);
var script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
script.SetRadius(mRadius);
script.ForEach(output);
output.CopyTo(blurredBitmap);
source.Recycle();
return(blurredBitmap);
}
private Bitmap CreateBlurredImage(Bitmap originalBitmap, int radius)
{
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(Context);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Android.Renderscripts.Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start Renderscript working.
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
public static Bitmap RsBlur(Context context, Bitmap source, int radius)
{
Bitmap inputBmp = source;
//(1)
RenderScript renderScript = RenderScript.Create(context);
// Allocate memory for Renderscript to work with
//(2)
Allocation input = Allocation.CreateFromBitmap(renderScript, inputBmp);
Allocation output = Allocation.CreateTyped(renderScript, input.Type);
//(3)
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur scriptIntrinsicBlur = ScriptIntrinsicBlur
.Create(renderScript, Element.U8_4(renderScript));
//(4)
scriptIntrinsicBlur.SetInput(input);
//(5)
// Set the blur radius
scriptIntrinsicBlur.SetRadius(radius);
//(6)
// Start the ScriptIntrinisicBlur
scriptIntrinsicBlur.ForEach(output);
//(7)
// Copy the output to the blurred bitmap
output.CopyTo(inputBmp);
//(8)
renderScript.Destroy();
return(inputBmp);
}
public Bitmap BlurImage(Bitmap image)
{
if (image == null)
return null;
image = RGB565toARGB888(image);
if (!configured)
{
input = Allocation.CreateFromBitmap(rs, image);
output = Allocation.CreateTyped(rs, input.Type);
script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetRadius(BLUR_RADIUS);
configured = true;
}
else
{
input.CopyFrom(image);
}
script.SetInput(input);
script.ForEach(output);
output.CopyTo(image);
return image;
}
private Bitmap FastBlur(Bitmap sentBitmap)
{
try
{
if (null == sentBitmap)
{
return(null);
}
Bitmap outputBitmap = Bitmap.CreateBitmap(sentBitmap);
RenderScript renderScript = RenderScript.Create(ActivityContext);
Allocation tmpIn = Allocation.CreateFromBitmap(renderScript, sentBitmap);
Allocation tmpOut = Allocation.CreateFromBitmap(renderScript, outputBitmap);
//Intrinsic Gausian blur filter
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
theIntrinsic.SetRadius(AppSettings.BlurRadiusComment);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
catch (Exception e)
{
Console.WriteLine(e);
return(null);
}
}
public bool Prepare(Context context, Bitmap buffer, float radius)
{
if (_mRenderScript == null)
{
try
{
_mRenderScript = RenderScript.Create(context);
_mBlurScript = ScriptIntrinsicBlur.Create(_mRenderScript, Element.U8_4(_mRenderScript));
}
catch (Android.Renderscripts.RSRuntimeException e)
{
if (DEBUG)
{
throw e;
}
else
{
// In release mode, just ignore
Release();
return(false);
}
}
}
_mBlurScript.SetRadius(radius);
_mBlurInput = Allocation.CreateFromBitmap(
_mRenderScript,
buffer,
Allocation.MipmapControl.MipmapNone,
AllocationUsage.Script);
_mBlurOutput = Allocation.CreateTyped(_mRenderScript, _mBlurInput.Type);
return(true);
}
private Bitmap CreateBlurredImage(int radius, Bitmap originalBitmap)
{
// Load a clean bitmap and work from that.
//** Asi estaba antes Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.dog_and_monkeys);
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(this);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
//Retrieves a blurred image
public static Drawable Difuminar(Drawable papelTapiz, short blurRadius)
{
Bitmap originalBitmap = ((BitmapDrawable)papelTapiz).Bitmap;
Bitmap blurredBitmap = Bitmap.CreateScaledBitmap(originalBitmap, originalBitmap.Width, originalBitmap.Height, false);
RenderScript rs = RenderScript.Create(Application.Context);
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
if (blurRadius < maxRadius)
{
script.SetRadius(blurRadius);
}
script.ForEach(output);
output.CopyTo(blurredBitmap);
Drawable papelTapizDifuminado = new BitmapDrawable(Android.Content.Res.Resources.System, blurredBitmap);
originalBitmap.Recycle();
originalBitmap.Dispose();
blurredBitmap.Recycle();
blurredBitmap.Dispose();
input.Dispose();
output.Dispose();
return(papelTapizDifuminado);
}
public Bitmap Transform(Bitmap source)
{
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap = Bitmap.CreateBitmap(source);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(m_Rs, source, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(m_Rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(m_Rs, Element.U8_4(m_Rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(m_BlurRadius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
if (blurredBitmap != source)
{
source.Recycle();
}
return(blurredBitmap);
}
public Bitmap blur(Bitmap bitmap, float radius, int repeat)
{
if (!IS_BLUR_SUPPORTED)
{
return(null);
}
if (radius > MAX_RADIUS)
{
radius = MAX_RADIUS;
}
int width = bitmap.Width;
int height = bitmap.Height;
// Create allocation type
Type bitmapType = new Type.Builder(rs, Element.RGBA_8888(rs))
.SetX(width)
.SetY(height)
.SetMipmaps(false) // We are using MipmapControl.MIPMAP_NONE
.Create();
// Create allocation
Allocation allocation = Allocation.CreateTyped(rs, bitmapType);
// Create blur script
ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
blurScript.SetRadius(radius);
// Copy data to allocation
allocation.CopyFrom(bitmap);
// set blur script input
blurScript.SetInput(allocation);
// invoke the script to blur
blurScript.ForEach(allocation);
// Repeat the blur for extra effect
for (int i = 0; i < repeat; i++)
{
blurScript.ForEach(allocation);
}
// copy data back to the bitmap
allocation.CopyTo(bitmap);
// release memory
allocation.Destroy();
blurScript.Destroy();
allocation = null;
blurScript = null;
return(bitmap);
}
private Bitmap Blur()
{
//Now I am letting the user to risk by letting them to choose to blur the image when the device runs android 10 and beyond
if (new ConfigurationManager(AppPreferences.Default).RetrieveAValue(ConfigurationParameters.BlurEnabledForAndroid10) == false)
{
//Workaround Android Q: IT causes SIGSEV in Android 10 for some reason. XOM related maybe
if (Build.VERSION.SdkInt >= BuildVersionCodes.Q)
{
return(image);
}
}
if (image == null)
{
return(image);
}
if (intensity == 0)
{
return(image); //No need to blur the image.
}
Bitmap input;
if (image.Width > deviceWidth || image.Height > deviceHeight)
{
input = Bitmap.CreateScaledBitmap(image, deviceWidth, deviceHeight, false);
}
else
{
input = Bitmap.CreateScaledBitmap(image, deviceWidth, deviceHeight, true);
}
try
{
Bitmap output = Bitmap.CreateBitmap(input);
RenderScript rs = RenderScript.Create(context);
ScriptIntrinsicBlur intrinsicBlur = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
Allocation inputallocation = Allocation.CreateFromBitmap(rs, input);
Allocation outputallocation = Allocation.CreateFromBitmap(rs, output);
intrinsicBlur.SetRadius(intensity);
intrinsicBlur.SetInput(inputallocation);
intrinsicBlur.ForEach(outputallocation);
outputallocation.CopyTo(output);
return(output);
}
catch
{
return(input);
}
}
public static void BlurBitmapWithRenderscript(RenderScript rs, Bitmap bitmap2)
{
// this will blur the bitmapOriginal with a radius of 25
// and save it in bitmapOriginal
// use this constructor for best performance, because it uses
// USAGE_SHARED mode which reuses memory
Allocation input = Allocation.CreateFromBitmap(rs, bitmap2);
Allocation output = Allocation.CreateTyped(rs, input.Type);
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
// must be >0 and <= 25
script.SetRadius(25f);
script.SetInput(input);
script.ForEach(output);
output.CopyTo(bitmap2);
}
public static Bitmap Blur(Bitmap BMap, float Radius)
{
Bitmap MutableBMap = BMap.Copy(Bitmap.Config.Argb8888, true);
RenderScript RS = RenderScript.Create(Application.Context);
Allocation Input = Allocation.CreateFromBitmap(RS, MutableBMap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation Output = Allocation.CreateTyped(RS, Input.Type);
ScriptIntrinsicBlur Script = ScriptIntrinsicBlur.Create(RS, Element.U8_4(RS));
Script.SetInput(Input);
Script.SetRadius(20);
Script.ForEach(Output);
Output.CopyTo(MutableBMap);
return(MutableBMap);
}
Bitmap CreateBlurredImage(int radius)
{
Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.imagebackground);
Bitmap blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
Allocation input = Allocation.CreateFromBitmap(renderScript, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
script.SetInput(input);
script.SetRadius(radius);
Allocation output = Allocation.CreateTyped(renderScript, input.Type);
script.ForEach(output);
output.CopyTo(blurredBitmap);
output.Destroy();
input.Destroy();
script.Destroy();
return(blurredBitmap);
}
public void Show()
{
var obj = (Activity)Xamarin.Forms.Forms.Context;
var root = obj.Window.DecorView.FindViewById(Resource.Id.Content);
root.DrawingCacheEnabled = true;
var b = Bitmap.CreateBitmap(root.GetDrawingCache(true));
root.DrawingCacheEnabled = false;
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(b);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(obj);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, b, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Renderscripts.Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(25);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
dialog = new Dialog(obj, Resource.Style.ThemeNoTitleBar);
Drawable d = new BitmapDrawable(blurredBitmap);
dialog.Window.SetBackgroundDrawable(d);
dialog.Show();
}
private void Init(Context context, IAttributeSet attrs)
{
// set up the script
try
{
renderScript = RenderScript.Create(context);
blurScript = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
}
catch (Java.Lang.RuntimeException ex)
{
if (ex.Class.Name == "android.support.v8.renderscript.RSRuntimeException")
{
Console.WriteLine(ex);
}
else
{
throw;
}
}
// set the default values
BlurRadius = DefaultBlurRadius;
DownsampleFactor = DefaultDownsampleFactor;
OverlayColor = DefaultOverlayColor;
OverlayBackgroundColor = DefaultOverlayBackgroundColor;
BlurredView = null;
if (attrs != null)
{
// read any XML values
var a = context.Theme.ObtainStyledAttributes(attrs, Resource.Styleable.BlurringView, 0, 0);
try
{
BlurRadius = a.GetInteger(Resource.Styleable.BlurringView_blurRadius, DefaultBlurRadius);
DownsampleFactor = a.GetInteger(Resource.Styleable.BlurringView_downsampleFactor, DefaultDownsampleFactor);
OverlayColor = a.GetColor(Resource.Styleable.BlurringView_overlayColor, DefaultOverlayColor);
OverlayBackgroundColor = a.GetColor(Resource.Styleable.BlurringView_overlayBackgroundColor, DefaultOverlayBackgroundColor);
}
finally
{
a.Recycle();
}
}
}
protected override void OnAttachedToWindow()
{
base.OnAttachedToWindow();
if (useBlur)
{
rs = RenderScript.Create(Context);
if (rs != null)
{
script = ScriptIntrinsicBlur.Create(rs, Android.Renderscripts.Element.U8_4(rs));
}
if (Element != null)
{
UpdateBackgroundColor();
}
}
}
Bitmap BlurImage(Bitmap input)
{
try {
var rsScript = RenderScript.Create(Context);
var alloc = Allocation.CreateFromBitmap(rsScript, input);
var blur = ScriptIntrinsicBlur.Create(rsScript, alloc.Element);
blur.SetRadius(12);
blur.SetInput(alloc);
var result = Bitmap.CreateBitmap(input.Width, input.Height, input.GetConfig());
var outAlloc = Allocation.CreateFromBitmap(rsScript, result);
blur.ForEach(outAlloc);
outAlloc.CopyTo(result);
rsScript.Destroy();
return(result);
} catch (Exception e) {
Log.Error("Blurrer", "Error while trying to blur, fallbacking. " + e.ToString());
return(input);
}
}
public Bitmap CreateBlurredImageoffline(Context contexto, int radius, int resid)
{
// Load a clean bitmap and work from that.
WallpaperManager wm = WallpaperManager.GetInstance(this);
Drawable d = wm.Drawable;
Bitmap originalBitmap;
originalBitmap = ((BitmapDrawable)d).Bitmap;
if (Build.VERSION.SdkInt >= BuildVersionCodes.JellyBeanMr1)
{
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(contexto);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
else
{
return(originalBitmap);
}
}
private void CreateBlurredImage(int radius)
{
// Load a clean bitmap and work from that.
Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.dog_and_monkeys);
if (blurredBmp != null)
{
blurredBmp.Recycle();
blurredBmp.Dispose();
blurredBmp = null;
}
// Create another bitmap that will hold the results of the filter.
blurredBmp = Bitmap.CreateBitmap(originalBitmap);
// Create the Renderscript instance that will do the work.
RenderScript rs = RenderScript.Create(this);
// Allocate memory for Renderscript to work with
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, Allocation.UsageScript);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Start Renderscript working.
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBmp);
input.Destroy();
input.Dispose();
output.Destroy();
output.Dispose();
}
private Bitmap CreateBlurredImage(int radius, Bitmap originalBitmap)
{
Bitmap blurredBitmap;
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
var rs = RenderScript.Create(Forms.Context);
var input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
var output = Allocation.CreateTyped(rs, input.Type);
var script = ScriptIntrinsicBlur.Create(rs, Android.Renderscripts.Element.U8_4(rs));
script.SetInput(input);
script.SetRadius(radius);
script.ForEach(output);
output.CopyTo(blurredBitmap);
return(blurredBitmap);
}
public static Bitmap Blur(Context ctx, Bitmap image)
{
int width = (int)Math.Round(image.Width * BITMAP_SCALE);
int height = (int)Math.Round(image.Height * BITMAP_SCALE);
Bitmap inputBitmap = Bitmap.CreateScaledBitmap(image, width, height, false);
Bitmap outputBitmap = Bitmap.CreateBitmap(inputBitmap);
var rs = RenderScript.Create(ctx);
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
Allocation tmpIn = Allocation.CreateFromBitmap(rs, inputBitmap);
Allocation tmpOut = Allocation.CreateFromBitmap(rs, outputBitmap);
theIntrinsic.SetRadius(BLUR_RADIUS);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
public Bitmap FnBlurEffectToImage(Bitmap image)
{
if (image == null)
{
return(null);
}
Bitmap outputBitmap = Bitmap.CreateBitmap(image);
RenderScript renderScript = RenderScript.Create(this);
Allocation tmpIn = Allocation.CreateFromBitmap(renderScript, image);
Allocation tmpOut = Allocation.CreateFromBitmap(renderScript, outputBitmap);
//Intrinsic Gausian blur filter
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
theIntrinsic.SetRadius(10f);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
return(outputBitmap);
}
Bitmap CreateBlurredImage(int radius)
{
// Load a clean bitmap to work from.
Bitmap originalBitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.dog_and_monkeys);
// Create another bitmap that will hold the results of the filter.
Bitmap blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
// Load up an instance of the specific script that we want to use.
// An Element is similar to a C type. The second parameter, Element.U8_4,
// tells the Allocation is made up of 4 fields of 8 unsigned bits.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(renderScript, Element.U8_4(renderScript));
// Create an Allocation for the kernel inputs.
Allocation input = Allocation.CreateFromBitmap(renderScript, originalBitmap,
Allocation.MipmapControl.MipmapFull,
AllocationUsage.Script);
// Assign the input Allocation to the script.
script.SetInput(input);
// Set the blur radius
script.SetRadius(radius);
// Finally we need to create an output allocation to hold the output of the Renderscript.
Allocation output = Allocation.CreateTyped(renderScript, input.Type);
// Next, run the script. This will run the script over each Element in the Allocation, and copy it's
// output to the allocation we just created for this purpose.
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
// Cleanup.
output.Destroy();
input.Destroy();
script.Destroy();
return(blurredBitmap);
}
protected override Android.Graphics.Bitmap Transform(Android.Graphics.Bitmap source)
{
Bitmap outBitmap = Bitmap.CreateBitmap(source.Width, source.Height, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(outBitmap);
canvas.DrawBitmap(source, 0, 0, null);
RenderScript rs = RenderScript.Create(mContext);
Allocation overlayAlloc = Allocation.CreateFromBitmap(rs, outBitmap);
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.Create(rs, overlayAlloc.Element);
blur.SetInput(overlayAlloc);
blur.SetRadius(mRadius);
blur.ForEach(overlayAlloc);
overlayAlloc.CopyTo(outBitmap);
source.Recycle();
rs.Destroy();
return(outBitmap);
}
public static Bitmap Blur(this Bitmap image, Context context, float blurRadius = 25)
{
Bitmap outputBitmap = null;
if (image != null)
{
if (blurRadius == 0)
{
return(image);
}
if (blurRadius < 1)
{
blurRadius = 1;
}
if (blurRadius > 25)
{
blurRadius = 25;
}
BLUR_RADIUS = blurRadius;
int width = (int)Math.Round(image.Width * BITMAP_SCALE);
int height = (int)Math.Round(image.Width * BITMAP_SCALE);
Bitmap inputBitmap = Bitmap.CreateScaledBitmap(image, width, height, false);
outputBitmap = Bitmap.CreateBitmap(inputBitmap);
RenderScript rs = RenderScript.Create(context);
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
Allocation tmpIn = Allocation.CreateFromBitmap(rs, inputBitmap);
Allocation tmpOut = Allocation.CreateFromBitmap(rs, outputBitmap);
theIntrinsic.SetRadius(BLUR_RADIUS);
theIntrinsic.SetInput(tmpIn);
theIntrinsic.ForEach(tmpOut);
tmpOut.CopyTo(outputBitmap);
}
return(outputBitmap);
}
private void DatabaseVariable_Updated(object sender, Ao3TrackDatabase.VariableUpdatedEventArgs e)
{
Xamarin.Forms.Device.BeginInvokeOnMainThread(() => {
bool.TryParse(e.NewValue, out useBlur);
if (useBlur)
{
if (IsAttachedToWindow)
{
if (rs == null)
{
rs = RenderScript.Create(Context);
}
if (rs != null)
{
script = ScriptIntrinsicBlur.Create(rs, Android.Renderscripts.Element.U8_4(rs));
}
}
}
else
{
script?.Dispose();
script = null;
sourceCanvas?.Dispose();
sourceCanvas = null;
source?.Dispose();
source = null;
blurred?.Dispose();
blurred = null;
rs?.Dispose();
rs = null;
}
if (Element != null)
{
UpdateBackgroundColor();
}
});
}
public Drawable Difuminar(Drawable papelTapiz)
{
//Fondo de escritorio provista por el Argumento que se pasa en <papelTapiz>
Bitmap originalBitmap = ((BitmapDrawable)papelTapiz).Bitmap;
// Un bitmap null que almacenará la imagen difuminada.
Bitmap blurredBitmap;
//Asignar a este bitmap la imagen original para trabajar con ella.
blurredBitmap = Bitmap.CreateBitmap(originalBitmap);
//Crear la instancia de RenderScript que hará el trabajo
RenderScript rs = RenderScript.Create(Application.Context);
//Alocar memoria para que RenderScript trabaje.
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script);
Allocation output = Allocation.CreateTyped(rs, input.Type);
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
script.SetInput(input);
// Set the blur radius
script.SetRadius(25);
// Start the ScriptIntrinisicBlur
script.ForEach(output);
// Copy the output to the blurred bitmap
output.CopyTo(blurredBitmap);
//Scale the bitmap:
Bitmap blurredBitMapResized = Bitmap.CreateScaledBitmap(blurredBitmap, 70, 80, false);
Drawable papelTapizDifuminado = new BitmapDrawable(blurredBitMapResized);
originalBitmap = null;
blurredBitmap = null;
blurredBitMapResized = null;
return(papelTapizDifuminado);
}