58234a69f2
This change creates a unique id in the cdm identifier in order to force a one-to-one mapping between WVDrmPlugin instances and CDM Engines. This change simplifies some assumptions. This includes ensuring that the metrics for a given MediaDrm instance map to a given CdmEngine instance. Bug: 73724453 Test: Updated unit tests. GTS test pass. Shaka Player, Netflix and Google Play test. Change-Id: I7e041b6cdf3e272d067da49d25a297b4a4663f1f
94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// CdmIdentifier - Struct that holds all the information necessary to
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// uniquely identify a CdmEngine instance in the
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// WvContentDecryptionModule multiplexing layer.
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#ifndef CDM_BASE_CDM_IDENTIFIER_H_
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#define CDM_BASE_CDM_IDENTIFIER_H_
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#include <string>
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#include "wv_cdm_constants.h"
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namespace wvcdm {
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// CdmIdentifier contains all the information necessary to uniquely identify a
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// distinct CdmEngine instance on Android. There should be a unique CdmEngine
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// (and thus distinct storage space) for every combination of SPOID and origin.
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struct CdmIdentifier {
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// The Stable Per-Origin Identifier, or SPOID. May be blank on old, SPOID-less
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// systems, in which case multiple apps with the same origin will share a
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// CdmEngine and storage.
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std::string spoid;
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// The origin. May be blank if the app does not set an origin, which is
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// the likely behavior of most non-web-browser apps.
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std::string origin;
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// The application package name provided by the application. This is used to
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// provide a friendly name of the application package for the purposes of
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// logging and metrics.
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std::string app_package_name;
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// The unique identifier guarantees that no two identifiers share the same
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// CdmEngine instance. We're moving to a model where a plugin maps 1 to 1
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// with a CdmEngine instance. This is a simple way to implement that.
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uint32_t unique_id;
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// This method is needed to check to see if the identifier is equivalent
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// to the default cdm. E.g. no spoid, origin or app package name. Use this
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// comparison in lieu of the == operator when checking to see if the
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// identifier would cause the default provisioned certificate to be used.
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bool IsEquivalentToDefault() {
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return spoid == EMPTY_SPOID
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&& origin == EMPTY_ORIGIN
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&& app_package_name == EMPTY_APP_PACKAGE_NAME;
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}
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};
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// Provide comparison operators
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inline bool operator==(const CdmIdentifier& lhs, const CdmIdentifier& rhs) {
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return lhs.spoid == rhs.spoid && lhs.origin == rhs.origin
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&& lhs.app_package_name == rhs.app_package_name
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&& lhs.unique_id == rhs.unique_id;
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}
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inline bool operator!=(const CdmIdentifier& lhs, const CdmIdentifier& rhs) {
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return !(lhs == rhs);
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}
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inline bool operator<(const CdmIdentifier& lhs, const CdmIdentifier& rhs) {
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return (lhs.spoid < rhs.spoid)
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|| ((lhs.spoid == rhs.spoid)
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&& (lhs.origin < rhs.origin
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|| (lhs.origin == rhs.origin
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&& (lhs.app_package_name < rhs.app_package_name
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|| (lhs.app_package_name == rhs.app_package_name
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&& lhs.unique_id < rhs.unique_id)))));
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}
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inline bool operator>(const CdmIdentifier& lhs, const CdmIdentifier& rhs) {
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return rhs < lhs;
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}
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inline bool operator<=(const CdmIdentifier& lhs, const CdmIdentifier& rhs) {
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return !(lhs > rhs);
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}
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inline bool operator>=(const CdmIdentifier& lhs, const CdmIdentifier& rhs) {
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return !(lhs < rhs);
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}
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// Provide default
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static const CdmIdentifier kDefaultCdmIdentifier = {
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EMPTY_SPOID,
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EMPTY_ORIGIN,
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EMPTY_APP_PACKAGE_NAME,
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0
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};
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} // namespace wvcdm
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#endif // CDM_BASE_CDM_IDENTIFIER_H_
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