da6437fe5e
[ Merge of http://go/wvgerrit/173410 ] The DRM plugin opens and closes many CDMs using the default identifier. These metrics are not needed when checking the metric history and will no longer be stored. Default CDM metrics will continue to appear in the live metrics list. Bug: 239462891 Bug: 270166158 Test: adb shell dumpsys android.hardware.drm.IDrmFactory/widevine -m Change-Id: I64662a44e9c084cc0f08c5a3f013dbf86374ac2d
98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine License
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// Agreement.
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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 "log.h"
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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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// Operating system user id of the application. Used to filter log messages.
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// Defaults to UNKNOWN_UID.
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uint32_t user_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() const {
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return spoid == EMPTY_SPOID && 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 && lhs.user_id == rhs.user_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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(lhs.unique_id == rhs.unique_id &&
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lhs.user_id < rhs.user_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, EMPTY_ORIGIN, EMPTY_APP_PACKAGE_NAME, 0, wvutil::UNKNOWN_UID};
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} // namespace wvcdm
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#endif // CDM_BASE_CDM_IDENTIFIER_H_
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