702aadf853
Adds support for WebM to the CDM. Decryption remains untouched, however the initialization data is passed differently for WebM. The previous version of this change broke playback for certain apps that were being allowed to pass invalid MIME types before this change was made. This version maintains backwards-compatiblity for these apps for now by rewriting their MIME types as "video/mp4". Merge of https://widevine-internal-review.googlesource.com/9225/ and https://widevine-internal-review.googlesource.com/9611/ from the Widevine cdm repo. Bug: 10638562 Change-Id: Ib37e838d08363f07b34b3a2e79a3f80a1f43e9ad
137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
// Copyright 2012 Google Inc. All Rights Reserved.
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#ifndef CDM_BASE_CDM_SESSION_H_
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#define CDM_BASE_CDM_SESSION_H_
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#include <set>
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#include "crypto_session.h"
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#include "device_files.h"
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#include "license.h"
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#include "oemcrypto_adapter.h"
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#include "policy_engine.h"
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#include "scoped_ptr.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 WvCdmEventListener;
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class CdmSession {
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public:
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explicit CdmSession(const CdmClientPropertySet* cdm_client_property_set);
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~CdmSession();
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CdmResponseType Init();
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CdmResponseType RestoreOfflineSession(const CdmKeySetId& key_set_id,
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const CdmLicenseType license_type);
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void set_key_system(const CdmKeySystem& ksystem) { key_system_ = ksystem; }
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const CdmKeySystem& key_system() { return key_system_; }
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const CdmSessionId& session_id() { return session_id_; }
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bool VerifySession(const CdmKeySystem& key_system,
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const CdmInitData& init_data);
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CdmResponseType GenerateKeyRequest(const std::string& mime_type,
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const CdmInitData& init_data,
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const CdmLicenseType license_type,
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const CdmAppParameterMap& app_parameters,
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CdmKeyMessage* key_request,
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std::string* server_url);
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// AddKey() - Accept license response and extract key info.
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CdmResponseType AddKey(const CdmKeyResponse& key_response,
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CdmKeySetId* key_set_id);
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// CancelKeyRequest() - Cancel session.
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CdmResponseType CancelKeyRequest();
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// Query session status
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CdmResponseType QueryStatus(CdmQueryMap* key_info);
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// Query license information
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CdmResponseType QueryKeyStatus(CdmQueryMap* key_info);
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// Query session control info
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CdmResponseType QueryKeyControlInfo(CdmQueryMap* key_info);
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// Decrypt() - Accept encrypted buffer and return decrypted data.
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CdmResponseType Decrypt(const CdmDecryptionParameters& parameters);
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// License renewal
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// GenerateRenewalRequest() - Construct valid renewal request for the current
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// session keys.
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CdmResponseType GenerateRenewalRequest(CdmKeyMessage* key_request,
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std::string* server_url);
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// RenewKey() - Accept renewal response and update key info.
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CdmResponseType RenewKey(const CdmKeyResponse& key_response);
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// License release
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// GenerateReleaseRequest() - Construct valid release request for the current
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// session keys.
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CdmResponseType GenerateReleaseRequest(CdmKeyMessage* key_request,
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std::string* server_url);
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// ReleaseKey() - Accept response and release key.
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CdmResponseType ReleaseKey(const CdmKeyResponse& key_response);
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bool IsKeyValid(const KeyId& key_id);
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bool AttachEventListener(WvCdmEventListener* listener);
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bool DetachEventListener(WvCdmEventListener* listener);
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void OnTimerEvent();
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void OnKeyReleaseEvent(const CdmKeySetId& key_set_id);
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SecurityLevel GetRequestedSecurityLevel();
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private:
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// Generate unique ID for each new session.
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CdmSessionId GenerateSessionId();
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bool GenerateKeySetId(CdmKeySetId* key_set_id);
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bool StoreLicense(DeviceFiles::LicenseState state);
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// instance variables
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const CdmSessionId session_id_;
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CdmKeySystem key_system_;
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CdmLicense license_parser_;
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scoped_ptr<CryptoSession> crypto_session_;
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PolicyEngine policy_engine_;
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bool license_received_;
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bool reinitialize_session_;
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CdmLicenseType license_type_;
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// license type offline related information
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CdmInitData offline_init_data_;
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CdmKeyMessage offline_key_request_;
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CdmKeyResponse offline_key_response_;
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CdmKeyMessage offline_key_renewal_request_;
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CdmKeyResponse offline_key_renewal_response_;
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std::string offline_release_server_url_;
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// license type release and offline related information
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CdmKeySetId key_set_id_;
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KeyId key_id_;
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// Used for certificate based licensing
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std::string wrapped_key_;
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bool is_certificate_loaded_;
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std::set<WvCdmEventListener*> listeners_;
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CORE_DISALLOW_COPY_AND_ASSIGN(CdmSession);
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};
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} // namespace wvcdm
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#endif // CDM_BASE_CDM_SESSION_H_
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