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build: [m67] enable widevine support (#14519)

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* 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.
This commit is contained in:
Robo 2018-09-11 01:05:05 +05:30 • committed by Aleksei Kuzmin
parent ce8e93bad3
commit f76a8c7b24
7 changed files with 81 additions and 148 deletions
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docs/tutorial/testing-widevine-cdm.md Normal file
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# Testing Widevine CDM
In Electron you can use the Widevine CDM library shipped with Chrome browser.
## Getting the library
Open `chrome://components/` in Chrome browser, find `Widevine Content Decryption Module`
and make sure it is up to date, then you can find the library files from the
application directory.
### On Windows
The library file `widevinecdm.dll` will be under
`Program Files(x86)/Google/Chrome/Application/CHROME_VERSION/WidevineCdm/_platform_specific/win_(x86|x64)/`
directory.
### On MacOS
The library file `libwidevinecdm.dylib` will be under
`/Applications/Google Chrome.app/Contents/Versions/CHROME_VERSION/Google Chrome Framework.framework/Versions/A/Libraries/WidevineCdm/_platform_specific/mac_(x86|x64)/`
directory.
**Note:** Make sure that chrome version used by Electron is greater than or
equal to the `min_chrome_version` value of Chrome's widevine cdm component.
The value can be found in `manifest.json` under `WidevineCdm` directory.
## Using the library
After getting the library files, you should pass the path to the file
with `--widevine-cdm-path` command line switch, and the library's version
with `--widevine-cdm-version` switch. The command line switches have to be
passed before the `ready` event of `app` module gets emitted.
Example code:
```javascript
const {app, BrowserWindow} = require('electron')
// You have to pass the directory that contains widevine library here, it is
// * `libwidevinecdm.dylib` on macOS,
// * `widevinecdm.dll` on Windows.
app.commandLine.appendSwitch('widevine-cdm-path', '/path/to/widevine_library')
// The version of plugin can be got from `chrome://plugins` page in Chrome.
app.commandLine.appendSwitch('widevine-cdm-version', '1.4.8.866')
let win = null
app.on('ready', () => {
win = new BrowserWindow()
win.show()
})
```
## Verifying Widevine CDM support
To verify whether widevine works, you can use following ways:
* Open https://shaka-player-demo.appspot.com/ and load a manifest that uses
`Widevine`.
* Open http://www.dash-player.com/demo/drm-test-area/, check whether the page
says `bitdash uses Widevine in your browser`, then play the video.