tor-browser

The Tor Browser
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EMEUtils.h (3513B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
      5 * You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef EME_LOG_H_
      8 #define EME_LOG_H_
      9 
     10 #include "mozilla/Logging.h"
     11 #include "mozilla/dom/BufferSourceBindingFwd.h"
     12 #include "mozilla/dom/MediaKeyStatusMapBinding.h"
     13 #include "mozilla/dom/MediaKeySystemAccessBinding.h"
     14 #include "nsString.h"
     15 #include "nsTArray.h"
     16 
     17 namespace mozilla {
     18 
     19 enum class CryptoScheme : uint8_t;
     20 #ifdef MOZ_WMF_CDM
     21 class MFCDMCapabilitiesIPDL;
     22 #endif
     23 struct KeySystemConfig;
     24 
     25 namespace dom {
     26 class Document;
     27 }  // namespace dom
     28 
     29 #ifndef EME_LOG
     30 LogModule* GetEMELog();
     31 #  define EME_LOG(...) \
     32    MOZ_LOG(GetEMELog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
     33 #  define EME_LOG_ENABLED() MOZ_LOG_TEST(GetEMELog(), mozilla::LogLevel::Debug)
     34 #endif
     35 
     36 #ifndef EME_VERBOSE_LOG
     37 LogModule* GetEMEVerboseLog();
     38 #  define EME_VERBOSE_LOG(...) \
     39    MOZ_LOG(GetEMEVerboseLog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
     40 #else
     41 #  ifndef EME_LOG
     42 #    define EME_LOG(...)
     43 #  endif
     44 
     45 #  ifndef EME_VERBOSE_LOG
     46 #    define EME_VERBOSE_LOG(...)
     47 #  endif
     48 #endif
     49 
     50 // Helper function to extract a copy of data coming in from JS in an
     51 // (ArrayBuffer or ArrayBufferView) IDL typed function argument.
     52 //
     53 // Only call this on a properly initialized ArrayBufferViewOrArrayBuffer.
     54 void CopyArrayBufferViewOrArrayBufferData(
     55    const dom::BufferSource& aBufferOrView, nsTArray<uint8_t>& aOutData);
     56 
     57 nsString KeySystemToProxyName(const nsAString& aKeySystem);
     58 
     59 bool IsClearkeyKeySystem(const nsAString& aKeySystem);
     60 
     61 bool IsWidevineKeySystem(const nsAString& aKeySystem);
     62 
     63 #ifdef MOZ_WMF_CDM
     64 bool IsMediaFoundationCDMPlaybackEnabled();
     65 
     66 bool IsPlayReadyEnabled();
     67 
     68 bool IsPlayReadyKeySystemAndSupported(const nsAString& aKeySystem);
     69 
     70 bool IsWidevineHardwareDecryptionEnabled();
     71 
     72 bool IsWidevineExperimentKeySystemAndSupported(const nsAString& aKeySystem);
     73 
     74 bool IsWMFClearKeySystemAndSupported(const nsAString& aKeySystem);
     75 #endif
     76 
     77 // Note: Primetime is now unsupported, but we leave it in the enum so
     78 // that the telemetry enum values are not changed; doing so would break
     79 // existing telemetry probes.
     80 enum CDMType {
     81  eClearKey = 0,
     82  ePrimetime = 1,  // Note: Unsupported.
     83  eWidevine = 2,
     84  eUnknown = 3
     85 };
     86 
     87 CDMType ToCDMTypeTelemetryEnum(const nsString& aKeySystem);
     88 
     89 const char* ToMediaKeyStatusStr(dom::MediaKeyStatus aStatus);
     90 
     91 // Return true if given config supports hardware decryption (SL3000 or L1).
     92 bool IsHardwareDecryptionSupported(
     93    const dom::MediaKeySystemConfiguration& aConfig);
     94 bool IsHardwareDecryptionSupported(const KeySystemConfig& aConfig);
     95 
     96 #ifdef MOZ_WMF_CDM
     97 void MFCDMCapabilitiesIPDLToKeySystemConfig(
     98    const MFCDMCapabilitiesIPDL& aCDMConfig, KeySystemConfig& aKeySystemConfig);
     99 #endif
    100 
    101 bool DoesKeySystemSupportClearLead(const nsAString& aKeySystem);
    102 
    103 // Return true if there is any config in the given configs has hardware DRM
    104 // associated robustness.
    105 bool CheckIfHarewareDRMConfigExists(
    106    const nsTArray<dom::MediaKeySystemConfiguration>& aConfigs);
    107 
    108 bool DoesKeySystemSupportHardwareDecryption(const nsAString& aKeySystem);
    109 
    110 void DeprecationWarningLog(const dom::Document* aDocument,
    111                           const char* aMsgName);
    112 
    113 Maybe<nsCString> GetOrigin(const dom::Document* aDocument);
    114 
    115 }  // namespace mozilla
    116 
    117 #endif  // EME_LOG_H_