7eea20df86
The EME spec technically requires CDMs to treat audio/mp4 and video/mp4 equivalently, as well as audio/webm and video/webm. We had only been accepting video/mp4 and video/webm up until now. This change also centralizes handling of init data types in the shared CDM code instead of having it spread across multiple places in the codebase. (This is a merge of https://widevine-internal-review.googlesource.com/9532/ from the Widevine CDM repo.) Bug: 13564917 Change-Id: Ib8bdfb2b003ffb00e8f0559561335abb3c5778b0
143 lines
4.9 KiB
C++
143 lines
4.9 KiB
C++
// Copyright 2013 Google Inc. All Rights Reserved.
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#ifndef CDM_BASE_CDM_ENGINE_H_
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#define CDM_BASE_CDM_ENGINE_H_
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#include "certificate_provisioning.h"
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#include "initialization_data.h"
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#include "oemcrypto_adapter.h"
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#include "timer.h"
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#include "wv_cdm_types.h"
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namespace wvcdm {
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class CdmClientPropertySet;
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class CdmSession;
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class CryptoEngine;
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class WvCdmEventListener;
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typedef std::map<CdmSessionId, CdmSession*> CdmSessionMap;
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typedef std::map<CdmKeySetId, CdmSessionId> CdmReleaseKeySetMap;
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class CdmEngine : public TimerHandler {
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public:
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CdmEngine();
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virtual ~CdmEngine();
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// Session related methods
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virtual CdmResponseType OpenSession(
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const CdmKeySystem& key_system,
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const CdmClientPropertySet* property_set,
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CdmSessionId* session_id);
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virtual CdmResponseType CloseSession(const CdmSessionId& session_id);
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virtual CdmResponseType OpenKeySetSession(const CdmKeySetId& key_set_id);
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virtual CdmResponseType CloseKeySetSession(const CdmKeySetId& key_set_id);
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// License related methods
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// Construct a valid license request
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virtual CdmResponseType GenerateKeyRequest(
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const CdmSessionId& session_id,
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const CdmKeySetId& key_set_id,
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const InitializationData& init_data,
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const CdmLicenseType license_type,
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CdmAppParameterMap& app_parameters,
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CdmKeyMessage* key_request,
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std::string* server_url);
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// Accept license response and extract key info.
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virtual CdmResponseType AddKey(const CdmSessionId& session_id,
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const CdmKeyResponse& key_data,
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CdmKeySetId* key_set_id);
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virtual CdmResponseType RestoreKey(const CdmSessionId& session_id,
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const CdmKeySetId& key_set_id);
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CdmResponseType CancelKeyRequest(const CdmSessionId& session_id);
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// Construct valid renewal request for the current session keys.
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virtual CdmResponseType GenerateRenewalRequest(const CdmSessionId& session_id,
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CdmKeyMessage* key_request,
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std::string* server_url);
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// Accept renewal response and update key info.
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virtual CdmResponseType RenewKey(const CdmSessionId& session_id,
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const CdmKeyResponse& key_data);
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// Query system information
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virtual CdmResponseType QueryStatus(CdmQueryMap* info);
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// Query session information
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virtual CdmResponseType QuerySessionStatus(const CdmSessionId& session_id,
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CdmQueryMap* key_info);
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// Query license information
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virtual CdmResponseType QueryKeyStatus(const CdmSessionId& session_id,
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CdmQueryMap* key_info);
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// Query seesion control information
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virtual CdmResponseType QueryKeyControlInfo(const CdmSessionId& session_id,
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CdmQueryMap* key_info);
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// Provisioning related methods
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virtual CdmResponseType GetProvisioningRequest(
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CdmCertificateType cert_type,
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const std::string& cert_authority,
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CdmProvisioningRequest* request,
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std::string* default_url);
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virtual CdmResponseType HandleProvisioningResponse(
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CdmProvisioningResponse& response,
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std::string* cert,
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std::string* wrapped_key);
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// Secure stop related methods
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virtual CdmResponseType GetSecureStops(CdmSecureStops* secure_stops);
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virtual CdmResponseType ReleaseSecureStops(
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const CdmSecureStopReleaseMessage& message);
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// Decryption and key related methods
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// Accept encrypted buffer and return decrypted data.
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virtual CdmResponseType Decrypt(const CdmSessionId& session_id,
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const CdmDecryptionParameters& parameters);
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// Is the key known to any session?
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virtual bool IsKeyValid(const KeyId& key_id);
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virtual bool FindSessionForKey(const KeyId& key_id, CdmSessionId* sessionId);
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// Event listener related methods
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virtual bool AttachEventListener(const CdmSessionId& session_id,
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WvCdmEventListener* listener);
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virtual bool DetachEventListener(const CdmSessionId& session_id,
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WvCdmEventListener* listener);
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private:
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// private methods
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// Cancel all sessions
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virtual bool CancelSessions();
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virtual bool ValidateKeySystem(const CdmKeySystem& key_system);
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// timer related methods to drive policy decisions
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virtual void EnablePolicyTimer();
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virtual void DisablePolicyTimer(bool force);
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virtual void OnTimerEvent();
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virtual void OnKeyReleaseEvent(const CdmKeySetId& key_set_id);
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// instance variables
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CdmSessionMap sessions_;
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CdmReleaseKeySetMap release_key_sets_;
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CertificateProvisioning cert_provisioning_;
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SecurityLevel cert_provisioning_requested_security_level_;
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// policy timer
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Timer policy_timer_;
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CORE_DISALLOW_COPY_AND_ASSIGN(CdmEngine);
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};
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} // namespace wvcdm
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#endif // CDM_BASE_CDM_ENGINE_H_
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