How to access pixels behind IImageProvider (Nokia Imaging SDK on WP8)

Question

I have an image source behind IImageProvider interface, and I'm trying to access its pixels.

There is a method inside IImageProvider: imageProvider.GetBitmapAsync(bitmapToFill)

• I can't get WriteableBitmap because I'm running on a non UI thread. I can't instantiate one empty WriteableBitmap to write to which is unfortunate because I can access pixels from it..
• I can fill a Bitmap object with the data, but there is no way to access its pixels on Windows Phone (it is missing system.drawing...)

How can I access individual pixels of the source behind IImageProvider?

Answer 1

Have you tried this?

var bitmap = await imageSource.GetBitmapAsync(null, OutputOption.PreserveAspectRatio);
var pixels = bitmap.Buffers[0];
for (uint i = 0; i < pixels.Buffer.Length; i++)
    {
        var val = pixels.Buffer.GetByte(i);
    }

• i = R ... [0]
• i+1 = G ... [1]
• i+2 = B ... [2]
• i+3 = A ... [3]

and so on

imageSource is your IImageProvider, I tested it with BufferImageSource.