87f179307f
Merged from Widevine CDM repo: https://widevine-internal-review.googlesource.com/#/c/13345/ Bug: 19592752 Change-Id: I73a215f9e67330caaced0110262448973aaae0a7
136 lines
5.1 KiB
C++
136 lines
5.1 KiB
C++
// Copyright 2013 Google Inc. All Rights Reserved.
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#ifndef CDM_BASE_WV_CONTENT_DECRYPTION_MODULE_H_
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#define CDM_BASE_WV_CONTENT_DECRYPTION_MODULE_H_
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#include <UniquePtr.h>
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#include "lock.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 CdmEngine;
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class WvCdmEventListener;
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class WvContentDecryptionModule : public TimerHandler {
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public:
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WvContentDecryptionModule();
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virtual ~WvContentDecryptionModule();
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// Static methods
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static bool IsSupported(const std::string& init_data_type);
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static bool IsCenc(const std::string& init_data_type);
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static bool IsWebm(const std::string& init_data_type);
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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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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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// Construct a valid license request.
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virtual CdmResponseType GenerateKeyRequest(const CdmSessionId& session_id,
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const CdmKeySetId& key_set_id,
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const std::string& init_data_type,
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const CdmInitData& init_data,
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const CdmLicenseType license_type,
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CdmAppParameterMap& app_parameters,
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CdmClientPropertySet* property_set,
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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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// Setup keys for offline usage which were retrived in an earlier key request
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virtual CdmResponseType RestoreKey(const CdmSessionId& session_id,
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const CdmKeySetId& key_set_id);
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// Cancel session
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virtual CdmResponseType RemoveKeys(const CdmSessionId& session_id);
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// Query system information
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virtual CdmResponseType QueryStatus(CdmQueryMap* key_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 session 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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virtual CdmResponseType Unprovision(CdmSecurityLevel level);
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// Secure stop related methods
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virtual CdmResponseType GetUsageInfo(const std::string& app_id,
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CdmUsageInfo* usage_info);
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virtual CdmResponseType GetUsageInfo(const std::string& app_id,
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const CdmSecureStopId& ssid,
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CdmUsageInfo* usage_info);
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virtual CdmResponseType ReleaseAllUsageInfo(const std::string& app_id);
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virtual CdmResponseType ReleaseUsageInfo(
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const CdmUsageInfoReleaseMessage& message);
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// Accept encrypted buffer and decrypt data.
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// Decryption parameters that need to be specified are
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// is_encrypted, is_secure, key_id, encrypt_buffer, encrypt_length,
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// iv, block_offset, decrypt_buffer, decrypt_buffer_length,
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// decrypt_buffer_offset and subsample_flags
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virtual CdmResponseType Decrypt(const CdmSessionId& session_id,
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bool validate_key_id,
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const CdmDecryptionParameters& parameters);
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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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virtual void NotifyResolution(const CdmSessionId& session_id, uint32_t width,
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uint32_t height);
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private:
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uint32_t GenerateSessionSharingId();
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// timer related methods to drive policy decisions
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void EnablePolicyTimer();
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void DisablePolicyTimer(bool force);
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void OnTimerEvent();
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static Lock session_sharing_id_generation_lock_;
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Lock policy_timer_lock_;
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Timer policy_timer_;
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// instance variables
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UniquePtr<CdmEngine> cdm_engine_;
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CORE_DISALLOW_COPY_AND_ASSIGN(WvContentDecryptionModule);
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};
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} // namespace wvcdm
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#endif // CDM_BASE_WV_CONTENT_DECRYPTION_MODULE_H_
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