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Generate key set ID on initialization and interface clean up

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This is a merge of squashed CLs.

* Cdm Session and Engine interface clean up

[ Merge of http://go/wvgerrit/16387 ]

Key Set Ids have been removed from the CdmSession interface
(GenerateKeyRequest, Addkey) as they can be queried by an accessor.

The CdmEngine interface now allows one to specify or retrieve a session ID,
since both were not being used in a single call. Key set IDs are no longer
returned though GenerateKeyRequest as they was not being used.

* Generate key set ID when session is initialized

[ Merge of http://go/wvgerrit/16370 ]

Key set IDs are currently generated at different times in the
CdmSession lifecycle. Android generates key set IDs when the license
is received, while the CE CDM generates (or overrides them)
when the session is constructed.

The key set IDs are now generated when the session is initialized.
Key set generation cannot occur earlier as it has a dependency on
security level and in turn on crypto session initialization which
occurs when the session is initialized.

Depenencies on Session ID has caused other activities, construction of
PolicyEngine, CdmLicense, setting property CDM client sets to be
deferred from CdmSession constructor to Init().

Android will still retrieve the key set IDs after the offline license is
processed. For streaming requests, the key set will be
unreserved and discarded when the session is terminated.

Change-Id: Ib802d1c043742d62efa9a2c901fcd113e836c33d
This commit is contained in:
Rahul Frias
2016-01-15 17:01:38 -08:00
parent d2dc2e3670
commit 84a14f2561
11 changed files with 153 additions and 153 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
libwvdrmengine/cdm/core/include/cdm_session.h
View File

@@ -22,12 +22,30 @@ class WvCdmEventListener;
class CdmSession {
public:
CdmSession(CdmClientPropertySet* cdm_client_property_set,
const std::string& origin, WvCdmEventListener* event_listener,
const CdmSessionId* forced_session_id);
CdmSession(const std::string& origin)
: initialized_(false),
origin_(origin),
crypto_session_(new CryptoSession),
file_handle_(new DeviceFiles),
license_received_(false),
is_offline_(false),
is_release_(false),
is_temporary_(false),
security_level_(kSecurityLevelUninitialized),
requested_security_level_(kLevelDefault),
is_initial_decryption_(true),
has_decrypted_since_last_report_(false),
is_initial_usage_update_(true),
is_usage_update_needed_(false),
mock_license_parser_in_use_(false),
mock_policy_engine_in_use_(false) {}
virtual ~CdmSession();
virtual CdmResponseType Init();
virtual CdmResponseType Init(CdmClientPropertySet* cdm_client_property_set);
virtual CdmResponseType Init(CdmClientPropertySet* cdm_client_property_set,
const CdmSessionId* forced_session_id,
WvCdmEventListener* event_listener);
virtual CdmResponseType RestoreOfflineSession(
const CdmKeySetId& key_set_id, const CdmLicenseType license_type);
@@ -35,16 +53,15 @@ class CdmSession {
const CdmKeyMessage& key_request, const CdmKeyResponse& key_response);
virtual const CdmSessionId& session_id() { return session_id_; }
virtual const CdmKeySetId& key_set_id() { return key_set_id_; }
virtual CdmResponseType GenerateKeyRequest(
const InitializationData& init_data, CdmLicenseType license_type,
const CdmAppParameterMap& app_parameters, CdmKeyMessage* key_request,
CdmKeyRequestType* key_request_type, std::string* server_url,
CdmKeySetId* key_set_id);
CdmKeyRequestType* key_request_type, std::string* server_url);
// AddKey() - Accept license response and extract key info.
virtual CdmResponseType AddKey(const CdmKeyResponse& key_response,
CdmKeySetId* key_set_id);
virtual CdmResponseType AddKey(const CdmKeyResponse& key_response);
// Query session status
virtual CdmResponseType QueryStatus(CdmQueryMap* key_info);
@@ -167,6 +184,9 @@ class CdmSession {
// license type release and offline related information
CdmKeySetId key_set_id_;
bool mock_license_parser_in_use_;
bool mock_policy_engine_in_use_;
CORE_DISALLOW_COPY_AND_ASSIGN(CdmSession);
};