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WriteableBitmap Sample

Here's the source to the WriteableBitmap sample I showed at Mix.  The sample uses WriteableBitmap to take a "snapshot" of the running video to make a thumbnail.  Click on the image below to run the sample.  When running the sample, click on the running video to create a thumbnail.  You can find the video for this sample here.

 

 

WriteableBitmap Image

 

 

The demo shows the following new Silverlight 3 features:

 

·         WriteableBitmap

·         WrapPanel (new SDK control)

Published Sunday, March 22, 2009 7:25 PM by jstegman

Comments

Sunday, March 22, 2009 11:55 PM by infoblog » WriteableBitmap Sample

# infoblog » WriteableBitmap Sample

PingBack from http://blog.a-foton.ru/index.php/2009/03/23/writeablebitmap-sample/

Monday, March 23, 2009 5:34 AM by KooKiz

# re: WriteableBitmap Sample

Hi,

There is a strange behaviour with the writeablebitmap. If I assign the writeablebitmap directly to the source of an image, it works (well, depending on the render tree, but that's another problem) :

WriteableBitmap wb = new WriteableBitmap(30, 40, PixelFormats.Bgr32);

wb.Render(this.sourceImage, new MatrixTransform());

image1.Source = wb;

But if I try to read directly the value of the WriteableBitmap pixels, it throws an exception :

WriteableBitmap wb = new WriteableBitmap(30, 40, PixelFormats.Bgr32);

wb.Render(this.sourceImage, new MatrixTransform());

int color = wb[0];

Is it a normal behaviour or is it because the writeablebitmap isn't yet fully implemented ?

Tuesday, April 07, 2009 12:59 PM by WzBn

# re: WriteableBitmap Sample

Hi, I'd like to save the image, in this case image1 to the isolatedstorage of the user. Any ideas how to do taht? Thanks

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