DRMManagerClient AcquireDrmInfo失败 [英] DRMManagerClient acquireDrmInfo is failing

问题描述

我正在开发一个用于播放Widevine保护的内容的应用程序.我正在尝试在Genymotion虚拟Android设备上运行应用程序.但是，当我这样做时，应用程序无法获取DRM信息.因此，以下代码将返回null，并且应用程序将不会继续进行.

I am developing an application that is meant to playback Widevine protected contents. I am trying to run application on Genymotion virtual Android device. But when I do so application fails to acquire DRM info. Thus following code returns null and application won't proceed further.

    DrmInfoRequest request = new DrmInfoRequest(DrmInfoRequest.TYPE_REGISTRATION_INFO,
    Settings.WIDEVINE_MIME_TYPE);
    request.put("WVPortalKey", portal);
    DrmInfo response = mDrmManager.acquireDrmInfo(request);

我想知道genymotion虚拟设备是否是问题的原因.如果是这样，是否可以配置genymotion使其与DRM一起使用?任何帮助将不胜感激.

I am wondering if genymotion virtual device is cause of the problem. If so, is it possible to configure genymotion such that it works with DRM? Any help would be highly appreciated.

推荐答案

上述方法对我不起作用，acquireDrmInfo(request)始终返回null.研究了Exo-player

The above method doesn't work for me, acquireDrmInfo(request) always return null. After study Exo-player DashTestRunner. I use following method to get the Widevine DRM information.

private static final UUID WIDEVINE_UUID = new UUID(0xEDEF8BA979D64ACEL, 0xA3C827DCD51D21EDL);

@TargetApi (Build.VERSION_CODES.JELLY_BEAN_MR2)
@SuppressWarnings("ResourceType")
private void getWVDrmInfo() {
MediaDrm mediaDrm = null;
try {
  mediaDrm = new MediaDrm(WIDEVINE_UUID);

  String vendor = mediaDrm.getPropertyString(MediaDrm.PROPERTY_VENDOR);
  String version = mediaDrm.getPropertyString(MediaDrm.PROPERTY_VERSION);
  String description = mediaDrm.getPropertyString(MediaDrm.PROPERTY_DESCRIPTION);
  String algorithms = mediaDrm.getPropertyString(MediaDrm.PROPERTY_ALGORITHMS);
  String securityLevel = mediaDrm.getPropertyString("securityLevel");
  String systemId = mediaDrm.getPropertyString("systemId");
  String hdcpLevel = mediaDrm.getPropertyString("hdcpLevel");
  String maxHdcpLevel = mediaDrm.getPropertyString("maxHdcpLevel");
  String usageReportingSupport = mediaDrm.getPropertyString("usageReportingSupport");
  String maxNumberOfSessions = mediaDrm.getPropertyString("maxNumberOfSessions");
  String numberOfOpenSessions = mediaDrm.getPropertyString("numberOfOpenSessions");

  mediaDrm.release();
} catch (UnsupportedSchemeException e) {
  e.printStackTrace();
}
}

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