Jiajia Will this Widevine feature support same functionalities on Windows as on Android?
If no special case for windows, Shall we use the same test as Android to verify Widevine on windows? Thanks Jenny From: Crosswalk-dev [mailto:crosswalk-dev-boun...@lists.crosswalk-project.org] On Behalf Of Qin, Jiajia Sent: Wednesday, January 13, 2016 9:44 AM To: Huo, Halton; Menard, Alexis; Kubo Da Costa, Raphael; Balestrieri, Francesco Cc: crosswalk-dev@lists.crosswalk-project.org Subject: Re: [Crosswalk-dev] Intent to Implement: Enable Widevine CDM for Windows Hi, all Currently, I only received Mikhail's lgtm. How's yours opinions? If some points are not very clear, please kindly point it out. I will try to answer it. Thanks. Regards, Jiajia From: Pozdnyakov, Mikhail Sent: Monday, January 11, 2016 9:33 PM To: Qin, Jiajia; crosswalk-dev@lists.crosswalk-project.org<mailto:crosswalk-dev@lists.crosswalk-project.org> Cc: Huo, Halton; Menard, Alexis; Kubo Da Costa, Raphael; Balestrieri, Francesco Subject: RE: Intent to Implement: Enable Widevine CDM for Windows lgtm BR, Mikhail ________________________________ From: Qin, Jiajia Sent: Wednesday, January 06, 2016 12:00 PM To: crosswalk-dev@lists.crosswalk-project.org<mailto:crosswalk-dev@lists.crosswalk-project.org> Cc: Huo, Halton; Menard, Alexis; Pozdnyakov, Mikhail; Kubo Da Costa, Raphael; Balestrieri, Francesco Subject: Intent to Implement: Enable Widevine CDM for Windows Description: Currently, content protected HTML5 video is very popular, such as the purchased video in Google Play Movies, Netflix, YouTube. W3C also provide the spec of EME(Encrypted Media Extensions) http://www.w3.org/TR/encrypted-media/ . From the spec, we can know that CDM(Content Decryption Module) is the client component that provides the functionality, including decryption, for one or more Key Systems. Google has enabled support for Widevine Content Decryption Module in Chromium 44. The Google DRM team contacted us to propose the integration of the Widevine DRM into Crosswalk. This feature has been landed in crosswalk 16 for Android. The same thing is being done for windows. Implement Details: Since crosswalk is based on content level of chromium, we can leverage the low level implementation of widevine CDM. But we need to bridge the high level interface to crosswalk like chromium does. To enable Windevine CDM for windows, two tasks need to be done in xwalk: 1. Register widevine cdm component 2. Add widevine key system Widevine cdm is as a component plugin in windows. So the first step is to register the widevine cdm component (widevinecdmadapter.dll which is produced from 'src/third_party/widevine/cdm/widevine_cdm.gyp:widevinecdmadapter') to the InternalPlugins. component_updater::RegisterWidevineCdmComponent(src/chrome/browser/component_updater/widevine_cdm_component_installer.h) will do it. In crosswalk, we need the similar functions. So, the following files will be added: runtime/browser/component_updater/widevine_cdm_component_installer.cc runtime/browser/component_updater/widevine_cdm_component_installer.h runtime/browser/component_updater/xwalk_component_updater_configurator.cc runtime/browser/component_updater/xwalk_component_updater_configurator.h The second step is to add widevine key system. In chromium, ChromeContentRendererClient::AddKeySystems will do it. Using same logic with chromium, in xwalk, we need to implement XWalkContentRendererClient::AddKeySystems. The following files will be added: runtime/renderer/xwalk_key_systems.cc runtime/renderer/xwalk_key_systems.h This feature is behind a flag 'enable_widevine' for widows. So we need to open this flag in gyp file. Once we detect that the OS is Win and enable_widevine=1, we will add dependency ../third_party/widevine/cdm/widevine_cdm.gyp:widevinecdmadapter to produce the widevinecdmadapter.dll when ninja build. (Widevinecdmadapter.dll is the plugin which will be registered in step 1.) Affected component: xwalk/runtime/ Related feature: https://crosswalk-project.org/jira/browse/XWALK-6102 Pull Request: https://github.com/crosswalk-project/crosswalk/pull/3468 Target release: Crosswalk-18 Thanks, Jiajia
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