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Revert "Revert "Fix MediaDrm security level APIs""

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This reverts commit a824afa9c4.

Change-Id: Ia8f3090454f010a507ac386767b2c2a11dce1ac4
This commit is contained in:
Jeff Tinker
2018-02-11 18:58:21 +00:00
parent a824afa9c4
commit 199d60da8c
1 changed files with 29 additions and 18 deletions
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47
drm/1.1/IDrmPlugin.hal
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@@ -26,6 +26,7 @@ import @1.1::KeyRequestType;
import @1.0::SecureStopId;
import @1.1::SecureStopRelease;
import @1.1::SecurityLevel;
import @1.0::SessionId;
/**
* IDrmPlugin is used to interact with a specific drm plugin that was created by
@@ -33,6 +34,34 @@ import @1.1::SecurityLevel;
* may be used by a codec to decrypt protected video content.
*/
interface IDrmPlugin extends @1.0::IDrmPlugin {
/**
* Open a new session at a requested security level. The security level
* represents the robustness of the device's DRM implementation. By default,
* sessions are opened at the native security level of the device which is
* the maximum level that can be supported. Overriding the security level is
* necessary when the decrypted frames need to be manipulated, such as for
* image compositing. The security level parameter must be equal to or lower
* than the native level. If the requested level is not supported, the next
* lower supported security level must be set. The level can be queried
* using {@link #getSecurityLevel}. A session ID is returned. When the
* drm@1.0 openSession is called, which has no securityLevel parameter, the
* security level is defaulted to the native security level of the device.
*
* @return status the status of the call. The status must be OK or one of
* the following errors: ERROR_DRM_NOT_PROVISIONED if the device
* requires provisioning before it can open a session,
* ERROR_DRM_RESOURCE_BUSY if there are insufficent resources available
* to open a session, ERROR_DRM_CANNOT_HANDLE if the requested security
* level is higher than the native level or lower than the lowest
* supported level or if openSession is not supported at the time of
* the call, or ERROR_DRM_INVALID_STATE if the HAL is in a state where
* a session cannot be opened.
* @param level the requested security level
* @return sessionId the session ID for the newly opened session
*/
openSession_1_1(SecurityLevel securityLevel) generates (Status status,
SessionId sessionId);
/**
* A key request/response exchange occurs between the app and a License
* Server to obtain the keys required to decrypt the content.
@@ -148,24 +177,6 @@ interface IDrmPlugin extends @1.0::IDrmPlugin {
getSecurityLevel(vec<uint8_t> sessionId) generates(Status status,
SecurityLevel level);
/**
* Set the security level of a session. This can be useful if specific
* attributes of a lower security level are needed by an application, such
* as image manipulation or compositing which requires non-secure decoded
* frames. Reducing the security level may limit decryption to lower content
* resolutions, depending on the license policy.
*
* @param sessionId the session id the call applies to
* @param level the requested security level
* @return status the status of the call. The status must be OK or one of
* the following errors: ERROR_DRM_SESSION_NOT_OPENED if the session
* is not opened, BAD_VALUE if the sessionId or security level is
* invalid or ERROR_DRM_INVALID_STATE if the HAL is in a state where
* the security level cannot be set.
*/
setSecurityLevel(vec<uint8_t> sessionId, SecurityLevel level)
generates(Status status);
/**
* Returns the plugin-specific metrics. Multiple metric groups may be
* returned in one call to getMetrics(). The scope and definition of the