build: [m67] enable widevine support (#14519)
* build: [m67] enable widevine support * fix: remove plugin cache reset hack It was added in (#8907) to make widevine cdm shows up in navigator.plugins, since widevine support is no longer enabled by a plugin it can be removed safely.
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docs/tutorial/testing-widevine-cdm.md
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docs/tutorial/testing-widevine-cdm.md
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# Testing Widevine CDM
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In Electron you can use the Widevine CDM library shipped with Chrome browser.
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## Getting the library
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Open `chrome://components/` in Chrome browser, find `Widevine Content Decryption Module`
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and make sure it is up to date, then you can find the library files from the
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application directory.
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### On Windows
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The library file `widevinecdm.dll` will be under
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`Program Files(x86)/Google/Chrome/Application/CHROME_VERSION/WidevineCdm/_platform_specific/win_(x86|x64)/`
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directory.
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### On MacOS
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The library file `libwidevinecdm.dylib` will be under
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`/Applications/Google Chrome.app/Contents/Versions/CHROME_VERSION/Google Chrome Framework.framework/Versions/A/Libraries/WidevineCdm/_platform_specific/mac_(x86|x64)/`
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directory.
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**Note:** Make sure that chrome version used by Electron is greater than or
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equal to the `min_chrome_version` value of Chrome's widevine cdm component.
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The value can be found in `manifest.json` under `WidevineCdm` directory.
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## Using the library
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After getting the library files, you should pass the path to the file
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with `--widevine-cdm-path` command line switch, and the library's version
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with `--widevine-cdm-version` switch. The command line switches have to be
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passed before the `ready` event of `app` module gets emitted.
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Example code:
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```javascript
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const {app, BrowserWindow} = require('electron')
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// You have to pass the directory that contains widevine library here, it is
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// * `libwidevinecdm.dylib` on macOS,
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// * `widevinecdm.dll` on Windows.
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app.commandLine.appendSwitch('widevine-cdm-path', '/path/to/widevine_library')
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// The version of plugin can be got from `chrome://plugins` page in Chrome.
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app.commandLine.appendSwitch('widevine-cdm-version', '1.4.8.866')
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let win = null
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app.on('ready', () => {
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win = new BrowserWindow()
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win.show()
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})
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```
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## Verifying Widevine CDM support
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To verify whether widevine works, you can use following ways:
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* Open https://shaka-player-demo.appspot.com/ and load a manifest that uses
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`Widevine`.
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* Open http://www.dash-player.com/demo/drm-test-area/, check whether the page
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says `bitdash uses Widevine in your browser`, then play the video.
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