23 lines
918 B
JavaScript
23 lines
918 B
JavaScript
// Refactored conversion functions
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const fromHexString = hexString => Uint8Array.from(hexString.match(/.{1,2}/g).map(byte => parseInt(byte, 16)));
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const toHexString = bytes => bytes.reduce((str, byte) => str + byte.toString(16).padStart(2, '0'), '');
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// Refactored getPssh function
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function getPssh(buffer) {
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const bytes = fromHexString(toHexString(new Uint8Array(buffer)).match(/000000..70737368.*/)[0]);
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return window.btoa(String.fromCharCode(...bytes));
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}
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// Refactored MediaKeySession.prototype.generateRequest
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const originalGenerateRequest = MediaKeySession.prototype.generateRequest;
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MediaKeySession.prototype.generateRequest = function(initDataType, initData) {
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const result = originalGenerateRequest.call(this, initDataType, initData);
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//Get PSSH and pass into content.js
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document.dispatchEvent(new CustomEvent('pssh', {
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detail: getPssh(initData)
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}));
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return result;
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};
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