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
112 lines
4.1 KiB
C++
112 lines
4.1 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 "wv_cdm_types.h"
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#include "utils/UniquePtr.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 {
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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 SupportsInitDataType(const std::string& 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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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 CancelKeyRequest(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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// 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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// 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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private:
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uint32_t GenerateSessionSharingId();
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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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