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imazen / imageflow-dotnet

The official .NET API for Imageflow, the Rust image processing and optimization engine for web servers
GNU Affero General Public License v3.0
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Feature request: "IsDecodable(?)" #22

Closed aheintz closed 3 years ago

aheintz commented 3 years ago

I want to be able to determine if a byte stream is decodable, i.e. ImageFlow can scale the binary or not. Without throwing an exception.

In our case, the stored content-type sometimes doesn't match, and I don't want to try to scale an unscalable image since it throws an exception. Current ImageJob.GetImageInfo also throws an exception if no matching encoder is found and exceptions aren't cheap and I would like to just be able to determine if ImageFlow can handle the image or not.

I don't know if this actually should be posted in the imageflow repo though.

lilith commented 3 years ago

It would probably be more efficient to implement this on the .NET side than in Imageflow itself, due to call overhead. I'm considering it.

lilith commented 3 years ago

See ImageJob.CanDecodeBytes() and ImageJob.GetContentTypeForBytes()

lilith commented 3 years ago

Added in https://github.com/imazen/imageflow-dotnet/releases/tag/v0.7.8