Blurhash functionality for placeholders

[Pinox]

It would be great to have a blurhash implementation (encode / decode ) in the CT that is .net standard 2.0 compliant that can also be used cross platform.

Latency on the internet is a reality especially on image intensive apps. Instead of using a static placeholder for images you can use a blurhash string that was generated and saved when the image was uploaded to your app. This creates a beautiful hashed image and you don't get the same boring static image placeholder that gets repeated in lists etc.

The blurhash is as small as : L009jvfQfQfQfQfQfQfQfQfQfQfQ

see https://blurha.sh/
https://github.com/woltapp/blurhash

Hello, 'Pinox! Thanks for submitting a new feature request. I've automatically added a vote 👍 reaction to help get things started. Other community members can vote to help us prioritize this feature in the future!

[Kyaa-dost]

Thanks, @Pinox for sharing this. Opening this up for discussion to get more insight from the community.

[Kyaa-dost]

@michael-hawker thoughts on this feature? Is this a good fit for the WCT?

[michael-hawker]

@Pinox this would be great! I actually thought we had an issue open for this already, but I can't find it... 😋

Not sure if we could have it integrate well into our ImageEx control or if it should just be a Brush or something. We should probably map out how it would get used by an end-developer in XAML.

However, there's also just BlurHash.NET as well. Not sure why their ImageSharp implementation jumps to .NET Standard 2.1 though, @Sergio0694 thoughts?

So, not sure what the best approach would be if we wanted to just use the 'Core' bit which is .NET Standard 1.6 and build a UWP interop with Win2D? But then should we just contribute to that project instead?

In either case, we may want it to ultimately be it's own package as we wouldn't want to add extra dependencies for this in our main control packages.