widget/GfxInfoBase.h

   1 /* vim: se cin sw=2 ts=2 et : */
   2 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #ifndef __mozilla_widget_GfxInfoBase_h__
   9 #define __mozilla_widget_GfxInfoBase_h__
  10
  11 #include "nsIGfxInfo.h"
  12 #if defined(XP_MACOSX) || defined(XP_WIN)
  13 #include "nsIGfxInfo2.h"
  14 #endif
  15 #include "nsCOMPtr.h"
  16 #include "nsIObserver.h"
  17 #include "nsWeakReference.h"
  18 #include "GfxDriverInfo.h"
  19 #include "nsTArray.h"
  20 #include "nsString.h"
  21 #include "GfxInfoCollector.h"
  22 #include "nsIGfxInfoDebug.h"
  23 #include "mozilla/Mutex.h"
  24 #include "js/Value.h"
  25 #include "mozilla/Attributes.h"
  26
  27 namespace mozilla {
  28 namespace widget {
  29
  30 class GfxInfoBase : public nsIGfxInfo,
  31 #if defined(XP_MACOSX) || defined(XP_WIN)
  32                     public nsIGfxInfo2,
  33 #endif
  34                     public nsIObserver,
  35                     public nsSupportsWeakReference
  36 #ifdef DEBUG
  37                   , public nsIGfxInfoDebug
  38 #endif
  39 {
  40 public:
  41   GfxInfoBase();
  42
  43   NS_DECL_THREADSAFE_ISUPPORTS
  44   NS_DECL_NSIOBSERVER
  45
  46   // We only declare a subset of the nsIGfxInfo interface. It's up to derived
  47   // classes to implement the rest of the interface.
  48   // Derived classes need to use
  49   // using GfxInfoBase::GetFeatureStatus;
  50   // using GfxInfoBase::GetFeatureSuggestedDriverVersion;
  51   // using GfxInfoBase::GetWebGLParameter;
  52   // to import the relevant methods into their namespace.
  53   NS_IMETHOD GetFeatureStatus(int32_t aFeature, int32_t *_retval) MOZ_OVERRIDE;
  54   NS_IMETHOD GetFeatureSuggestedDriverVersion(int32_t aFeature, nsAString & _retval) MOZ_OVERRIDE;
  55   NS_IMETHOD GetWebGLParameter(const nsAString & aParam, nsAString & _retval) MOZ_OVERRIDE;
  56
  57   NS_IMETHOD GetFailures(uint32_t *failureCount, char ***failures) MOZ_OVERRIDE;
  58   NS_IMETHOD_(void) LogFailure(const nsACString &failure) MOZ_OVERRIDE;
  59   NS_IMETHOD GetInfo(JSContext*, JS::MutableHandle<JS::Value>) MOZ_OVERRIDE;
  60
  61   // Initialization function. If you override this, you must call this class's
  62   // version of Init first.
  63   // We need Init to be called separately from the constructor so we can
  64   // register as an observer after all derived classes have been constructed
  65   // and we know we have a non-zero refcount.
  66   // Ideally, Init() would be void-return, but the rules of
  67   // NS_GENERIC_FACTORY_CONSTRUCTOR_INIT require it be nsresult return.
  68   virtual nsresult Init();
  69
  70   // only useful on X11
  71   NS_IMETHOD_(void) GetData() MOZ_OVERRIDE { }
  72
  73   static void AddCollector(GfxInfoCollectorBase* collector);
  74   static void RemoveCollector(GfxInfoCollectorBase* collector);
  75
  76   static nsTArray<GfxDriverInfo>* mDriverInfo;
  77   static bool mDriverInfoObserverInitialized;
  78
  79   virtual nsString Model() { return EmptyString(); }
  80   virtual nsString Hardware() { return EmptyString(); }
  81   virtual nsString Product() { return EmptyString(); }
  82   virtual nsString Manufacturer() { return EmptyString(); }
  83   virtual uint32_t OperatingSystemVersion() { return 0; }
  84
  85 protected:
  86
  87   virtual ~GfxInfoBase();
  88
  89   virtual nsresult GetFeatureStatusImpl(int32_t aFeature, int32_t* aStatus,
  90                                         nsAString& aSuggestedDriverVersion,
  91                                         const nsTArray<GfxDriverInfo>& aDriverInfo,
  92                                         OperatingSystem* aOS = nullptr);
  93
  94   // Gets the driver info table. Used by GfxInfoBase to check for general cases
  95   // (while subclasses check for more specific ones).
  96   virtual const nsTArray<GfxDriverInfo>& GetGfxDriverInfo() = 0;
  97
  98 private:
  99   virtual int32_t FindBlocklistedDeviceInList(const nsTArray<GfxDriverInfo>& aDriverInfo,
 100                                               nsAString& aSuggestedVersion,
 101                                               int32_t aFeature,
 102                                               OperatingSystem os);
 103
 104   void EvaluateDownloadedBlacklist(nsTArray<GfxDriverInfo>& aDriverInfo);
 105
 106   nsCString mFailures[9]; // The choice of 9 is Ehsan's
 107   uint32_t mFailureCount;
 108   Mutex mMutex;
 109
 110 };
 111
 112 }
 113 }
 114
 115 #endif /* __mozilla_widget_GfxInfoBase_h__ */