mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Wojciech Tyczyński
970d7756ea
The goal is to simplify and abstract feature logic detection. Currently lots of places depend on various calls to `shaka.util.Platform` and mainteinance of this is hard & not easy to read. By introducing device API ideally rest of the player logic would look into device features instead of directly checking platform. Additionally we can more easily cache needed values, so we won't have to parse user agent several times anymore. --------- Co-authored-by: Álvaro Velad Galván <ladvan91@hotmail.com>
42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.polyfill.EncryptionScheme');
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goog.require('shaka.device.DeviceFactory');
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goog.require('shaka.polyfill');
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/**
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* @summary A polyfill to add support for EncryptionScheme queries in EME.
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* @see https://wicg.github.io/encrypted-media-encryption-scheme/
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* @see https://github.com/w3c/encrypted-media/pull/457
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* @see https://github.com/shaka-project/eme-encryption-scheme-polyfill
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* @export
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*/
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shaka.polyfill.EncryptionScheme = class {
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/**
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* Install the polyfill if needed.
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*
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* @suppress {missingRequire}
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* @export
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*/
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static install() {
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// Skip polyfill for PlayStation 4 and SkyQ devices due to known crashes
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// caused by unsupported encryptionScheme handling. These platforms do not
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// require the polyfill, and forcing encryptionScheme processing can result
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// in playback crashes.
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const device = shaka.device.DeviceFactory.getDevice();
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if (!device.supportsEncryptionSchemePolyfill()) {
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return;
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}
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EncryptionSchemePolyfills.install();
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}
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};
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// Install at a low priority so that other EME polyfills go first.
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shaka.polyfill.register(shaka.polyfill.EncryptionScheme.install, -2);
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