Re: [img-conversion] Convert to spec (#14)

>        </h2>
> +      <pre class="idl">
> +typedef (HTMLImageElement or Blob) ImageSource;
> +
> +partial interface ImageData {
> +  [NewObject] Promise&lt;Blob&gt; toBlob (optional DOMString type, optional EncoderOpts options);
> +  [NewObject] static Promise&lt;ImageData&gt; create (ImageSource source);
> +  static CanPlayTypeResult canDecodeType (DOMString mimeType);
> +  static CanPlayTypeResult canEncodeType (DOMString mimeType);

If there is only one function to test both encode/decode, browsers would be obliged to support both encoding and decoding for any new image formats, which seems unreasonably strict. For example a browser might want to be able to decode both JPEG, JPEG-2000 and JPEG-XR, but only encode JPEG and JPEG-2000.

---
Reply to this email directly or view it on GitHub:
https://github.com/WICG/img-conversion/pull/14/files#r40114553