I have a SoftwareBitmap, and I'd like to know if it's fully black. This is due to a bug on MediaPlayer, but that's a totally different story.
I don't know how to convert it to a WritableBitmap on a non UI thread -- so, long story short, is it possible to get access to all the bytes from the software bitmap?
I know it's Bgra8, so I could simply test each 4 bytes to be 0xff, 0, 0, 0.
How do I do that?