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am 7fa9667f: Merge "Clarify how release of offline keys is handled in the MediaDrm API" into jb-mr2-dev

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* commit '7fa9667f63fe84a2d17ce899121f32bfcec98864':
  Clarify how release of offline keys is handled in the MediaDrm API
This commit is contained in:
Jeff Tinker
2013-04-15 13:13:39 -07:00
committed by Android Git Automerger
parent 29638ab758 7fa9667f63
commit 29b5e1701b
1 changed files with 21 additions and 14 deletions
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35
media/java/android/media/MediaDrm.java
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@@ -215,6 +215,7 @@ public final class MediaDrm {
public static final int MEDIA_DRM_KEY_TYPE_STREAMING = 1;
public static final int MEDIA_DRM_KEY_TYPE_OFFLINE = 2;
public static final int MEDIA_DRM_KEY_TYPE_RELEASE = 3;
public final class KeyRequest {
public KeyRequest() {}
@@ -223,28 +224,36 @@ public final class MediaDrm {
};
/**
* A key request/response exchange occurs between the app and a license
* server to obtain the keys to decrypt encrypted content. getKeyRequest()
* is used to obtain an opaque key request byte array that is delivered to the
* license server. The opaque key request byte array is returned in
* KeyRequest.data. The recommended URL to deliver the key request to is
* A key request/response exchange occurs between the app and a license server
* to obtain or release keys used to decrypt encrypted content.
* getKeyRequest() is used to obtain an opaque key request byte array that is
* delivered to the license server. The opaque key request byte array is returned
* in KeyRequest.data. The recommended URL to deliver the key request to is
* returned in KeyRequest.defaultUrl.
*
* After the app has received the key request response from the server,
* it should deliver to the response to the DRM engine plugin using the method
* {@link #provideKeyResponse}.
*
* @param sessonId the session ID for the drm session
* @param scope may be a sessionId or a keySetId, depending on the specified keyType.
* When the keyType is MEDIA_DRM_KEY_TYPE_STREAMING or MEDIA_DRM_KEY_TYPE_OFFLINE,
* scope should be set to the sessionId the keys will be provided to. When the keyType
* is MEDIA_DRM_KEY_TYPE_RELEASE, scope should be set to the keySetId of the keys
* being released. Releasing keys from a device invalidates them for all sessions.
* @param init container-specific data, its meaning is interpreted based on the
* mime type provided in the mimeType parameter. It could contain, for example,
* the content ID, key ID or other data obtained from the content metadata that is
* required in generating the key request.
* required in generating the key request. init may be null when keyType is
* MEDIA_DRM_KEY_TYPE_RELEASE.
* @param mimeType identifies the mime type of the content
* @param keyType specifes if the request is for streaming or offline content
* @param keyType specifes the type of the request. The request may be to acquire
* keys for streaming or offline content, or to release previously acquired
* keys, which are identified by a keySetId.
* @param optionalParameters are included in the key request message to
* allow a client application to provide additional message parameters to the server.
*/
public native KeyRequest getKeyRequest(byte[] sessionId, byte[] init,
public native KeyRequest getKeyRequest(byte[] scope, byte[] init,
String mimeType, int keyType,
HashMap<String, String> optionalParameters)
throws MediaDrmException;
@@ -272,13 +281,11 @@ public final class MediaDrm {
throws MediaDrmException;
/**
* Remove the persisted keys associated with an offline license. Keys are persisted
* when {@link provideKeyResponse} is called with keys obtained from the method
* {@link getKeyRequest} using keyType = MEDIA_DRM_KEY_TYPE_OFFLINE.
* Remove the current keys from a session.
*
* @param keySetId identifies the saved key set to remove
* @param sessionId the session ID for the DRM session
*/
public native void removeKeys(byte[] keySetId) throws MediaDrmException;
public native void removeKeys(byte[] sessionId) throws MediaDrmException;
/**
* Request an informative description of the key status for the session. The status is