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/* 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 http://mozilla.org/MPL/2.0/. */
export const MediaUtils = {
getMetadata(aElement) {
if (!aElement) {
return null;
}
return {
src: aElement.currentSrc ?? aElement.src,
width: aElement.videoWidth ?? 0,
height: aElement.videoHeight ?? 0,
duration: aElement.duration,
seekable: !!aElement.seekable,
audioTrackCount:
aElement.audioTracks?.length ??
aElement.mozHasAudio ??
aElement.webkitAudioDecodedByteCount ??
MediaUtils.isAudioElement(aElement)
? 1
: 0,
videoTrackCount:
aElement.videoTracks?.length ?? MediaUtils.isVideoElement(aElement)
? 1
: 0,
};
},
isVideoElement(aElement) {
return (
aElement && ChromeUtils.getClassName(aElement) === "HTMLVideoElement"
);
},
isAudioElement(aElement) {
return (
aElement && ChromeUtils.getClassName(aElement) === "HTMLAudioElement"
);
},
isMediaElement(aElement) {
return (
MediaUtils.isVideoElement(aElement) || MediaUtils.isAudioElement(aElement)
);
},
findMediaElement(aElement) {
return (
MediaUtils.findVideoElement(aElement) ??
MediaUtils.findAudioElement(aElement)
);
},
findVideoElement(aElement) {
if (!aElement) {
return null;
}
if (MediaUtils.isVideoElement(aElement)) {
return aElement;
}
const childrenMedia = aElement.getElementsByTagName("video");
if (childrenMedia && childrenMedia.length) {
return childrenMedia[0];
}
return null;
},
findAudioElement(aElement) {
if (!aElement || MediaUtils.isAudioElement(aElement)) {
return aElement;
}
const childrenMedia = aElement.getElementsByTagName("audio");
if (childrenMedia && childrenMedia.length) {
return childrenMedia[0];
}
return null;
},
};
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