1.developer.android.com
1.1 android.media.MediaDrm
https://developer.android.com/reference/android/media/MediaDrm.html
1.2 android.drm
https://developer.android.com/reference/android/drm/package-summary.html
1.3
https://source.android.com/devices/drm
2.www.widevine.com
http://www.widevine.com/getting_started.html
http://w3c.github.io/encrypted-media/
ISO_IEC 23001-7_2012
3.android.googlesource.com
DownloadManager API
https://android.googlesource.com/platform/packages/providers/DownloadProvider/+/master/src/com/android/providers/downloads/DownloadDrmHelper.java
Media API
media/java/android/media
DRM Framework API
drm/java/android/drm/DrmManagerClient.java
drm/java/android/drm/DrmOutputStream.java
drm/jni/android_drm_DrmManagerClient.cpp
DRM Manager
drm/drmserver/main_drmserver.cpp
include/drm/DrmManagerClient.h
drm/libdrmframework/DrmManagerClient.cpp
drm/libdrmframework/include/DrmManagerClientImpl.h
drm/libdrmframework/DrmManagerClientImpl.cpp
drm/libdrmframework/include/DrmManagerService.h
drm/drmserver/DrmManagerService.cpp
drm/libdrmframework/include/IDrmManagerService.h
drm/common/IDrmManagerService.cpp
drm/libdrmframework/include/DrmManager.h TPlugInManager
drm/drmserver/DrmManager.cpp
drm/libdrmframework/plugins/common/include/DrmEngineBase.h
drm/common/DrmEngineBase.cpp
drm/libdrmframework/plugins/common/include/IDrmEngine.h
include/media/stagefright/FileSource.h
media/libstagefright/FileSource.cpp
include/media/stagefright/MediaExtractor.h
media/libstagefright/MediaExtractor.cpp
media/libstagefright/include/DRMExtractor.h
media/libstagefright/DRMExtractor.cpp
media/libstagefright/include/WVMExtractor.h
media/libstagefright/WVMExtractor.cpp
drm/libdrmframework/include/PlugInManager.h
其他文章
DRM in Android - 胡家庄 - 博客频道 - CSDN.NET
DRM in Android - Innost的专栏 - 博客频道 - CSDN.NET