Add VieoDecoder section with up-to-date interfaces

Author: chcunningham

index.bs

@@ -13,8 +13,40 @@ Abstract: WebCodecs is a flexible web API for encoding and decoding audio and vi
 !Version History: <a href="https://github.com/wicg/web-codecs/commits">https://github.com/wicg/web-codecs/commits</a>
 </pre>
 
-<h2 id="introduction">Introduction</h2>
+<section class='non-normative'>
+ <h2 id='introduction'>Introduction</h2>
+ <em>This section is non-normative</em>
+ <p>
+ The introduction has not yet been written.
+ </p>
+ <p class='note'>
+ NOTE: The interfaces that follow are a work in progress.
+ </p>
+</section>
 
-<em>This section is non-normative</em>
+<section>
+ <h2 id='video-decoder-interface'>VideoDecoder Interface</h2>
+ <pre class='idl'>
+ [Exposed=(Window)]
+ interface VideoDecoder {
+ constructor();
+ Promise&lt;void&gt; Initialize(VideoDecoderInitParameters params);
+ Promise&lt;void&gt; Flush();
+ void Close();
 
-The specification work has not started yet.
+ readonly attribute WritableStream writable; // of EncodedVideoFrame
+ readonly attribute ReadableStream readable; // of VideoFrame
+ };
+ </pre>
+ <pre class='idl'>
+ [Exposed=(Window)]
+ dictionary VideoDecoderInitParameters {
+ required DOMString codec;
+ required DOMString profile;
+
+ // These are the "coded size", not the "visible size"
+ required unsigned long width;
+ required unsigned long height;
+ };
+ </pre>
+</section>