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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at
* The origin of this IDL file is
[Exposed=(Window,DedicatedWorker), SecureContext, Pref=""]
interface VideoDecoder : EventTarget {
constructor(VideoDecoderInit init);
readonly attribute CodecState state;
readonly attribute unsigned long decodeQueueSize;
attribute EventHandler ondequeue;
undefined configure(VideoDecoderConfig config);
undefined decode(EncodedVideoChunk chunk);
[NewObject, Throws]
Promise<undefined> flush();
undefined reset();
undefined close();
[NewObject, Throws]
static Promise<VideoDecoderSupport> isConfigSupported(VideoDecoderConfig config);
dictionary VideoDecoderInit {
required VideoFrameOutputCallback output;
required WebCodecsErrorCallback error;
callback VideoFrameOutputCallback = undefined(VideoFrame output);
dictionary VideoDecoderSupport {
boolean supported;
VideoDecoderConfig config;
dictionary VideoDecoderConfig {
required DOMString codec;
// Bug 1696216: Should be [AllowShared] BufferSource description;
([AllowShared] ArrayBufferView or [AllowShared] ArrayBuffer) description;
[EnforceRange] unsigned long codedWidth;
[EnforceRange] unsigned long codedHeight;
[EnforceRange] unsigned long displayAspectWidth;
[EnforceRange] unsigned long displayAspectHeight;
VideoColorSpaceInit colorSpace;
HardwareAcceleration hardwareAcceleration = "no-preference";
boolean optimizeForLatency;
enum HardwareAcceleration {
enum CodecState {
callback WebCodecsErrorCallback = undefined(DOMException error);