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Removed createElement; use HTMLVideoElement.prototype instead #22

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Removed createElement; use HTMLVideoElement.prototype instead #22

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35 changes: 15 additions & 20 deletions src/inject/inject.js
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Original file line number Diff line number Diff line change
Expand Up @@ -24,45 +24,38 @@
*/

function inject () {

override();

function override() {
// Override video element canPlayType() function
var videoElem = document.createElement('video');
var origCanPlayType = videoElem.canPlayType.bind(videoElem);
videoElem.__proto__.canPlayType = makeModifiedTypeChecker(origCanPlayType);
HTMLVideoElement.prototype.canPlayType = makeModifiedTypeChecker(HTMLVideoElement.prototype.canPlayType);

// Override media source extension isTypeSupported() function
var mse = window.MediaSource;
// Check for MSE support before use
if (mse === undefined) return;
var origIsTypeSupported = mse.isTypeSupported.bind(mse);
mse.isTypeSupported = makeModifiedTypeChecker(origIsTypeSupported);
if (typeof mse === 'function') {
mse.isTypeSupported = makeModifiedTypeChecker(mse.isTypeSupported);
}
}

// return a custom MIME type checker that can defer to the original function
function makeModifiedTypeChecker(origChecker) {
// Check if a video type is allowed
return function (type) {
if (type === undefined) return '';
var disallowed_types = [];
// var disallowed_types = [];

// If video type is in disallowed_types, say we don't support them
if (localStorage['enhanced-h264ify-block_h264'] === 'true') {
disallowed_types.push('avc');
if (type.indexOf('avc') >= 0) return '';
}
if (localStorage['enhanced-h264ify-block_vp8'] === 'true') {
disallowed_types.push('vp8');
if (type.indexOf('vp8') >= 0) return '';
}
if (localStorage['enhanced-h264ify-block_vp9'] === 'true') {
disallowed_types.push('vp9', 'vp09');
if (type.indexOf('vp9') >= 0) return '';
if (type.indexOf('vp09') >= 0) return '';
}
if (localStorage['enhanced-h264ify-block_av1'] === 'true') {
disallowed_types.push('av01');
}

// If video type is in disallowed_types, say we don't support them
for (var i = 0; i < disallowed_types.length; i++) {
if (type.indexOf(disallowed_types[i]) !== -1) return '';
if (type.indexOf('av01') >= 0) return '';
}

if (localStorage['enhanced-h264ify-block_60fps'] === 'true') {
Expand All @@ -71,9 +64,11 @@ function inject () {
}

// Otherwise, ask the browser
return origChecker(type);
return origChecker.call(this, type);
};
}

override();
}

function useActualVolumeLevel() {
Expand Down