gfx/config/gfxFeature.h

   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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #ifndef mozilla_gfx_config_gfxFeature_h
   7 #define mozilla_gfx_config_gfxFeature_h
   8
   9 #include <functional>
  10 #include <stdint.h>
  11 #include "gfxTelemetry.h"
  12 #include "mozilla/Assertions.h"
  13 #include "mozilla/Maybe.h"
  14 #include "nsString.h"
  15
  16 namespace mozilla {
  17 namespace gfx {
  18
  19 #define GFX_FEATURE_MAP(_)                                                   \
  20   /* Name,                        Type,         Description */               \
  21   _(HW_COMPOSITING, Feature, "Compositing")                                  \
  22   _(D3D11_COMPOSITING, Feature, "Direct3D11 Compositing")                    \
  23   _(OPENGL_COMPOSITING, Feature, "OpenGL Compositing")                       \
  24   _(DIRECT2D, Feature, "Direct2D")                                           \
  25   _(D3D11_HW_ANGLE, Feature, "Direct3D11 hardware ANGLE")                    \
  26   _(DIRECT_DRAW, Feature, "DirectDraw")                                      \
  27   _(GPU_PROCESS, Feature, "GPU Process")                                     \
  28   _(WEBRENDER, Feature, "WebRender")                                         \
  29   _(WEBRENDER_QUALIFIED, Feature, "WebRender qualified")                     \
  30   _(WEBRENDER_COMPOSITOR, Feature, "WebRender native compositor")            \
  31   _(WEBRENDER_PARTIAL, Feature, "WebRender partial present")                 \
  32   _(WEBRENDER_SHADER_CACHE, Feature, "WebRender shader disk cache")          \
  33   _(WEBRENDER_OPTIMIZED_SHADERS, Feature, "WebRender optimized shaders")     \
  34   _(WEBRENDER_ANGLE, Feature, "WebRender ANGLE")                             \
  35   _(WEBRENDER_DCOMP_PRESENT, Feature, "WebRender DirectComposition")         \
  36   _(WEBRENDER_SOFTWARE, Feature, "WebRender software fallback")              \
  37   _(OMTP, Feature, "Off Main Thread Painting")                               \
  38   _(WEBGPU, Feature, "WebGPU")                                               \
  39   _(X11_EGL, Feature, "X11 EGL")                                             \
  40   _(DMABUF, Feature, "DMABUF")                                               \
  41   _(WINDOW_OCCLUSION, Feature, "WINDOW_OCCLUSION")                           \
  42   _(HARDWARE_VIDEO_DECODING, Feature, "Hardware video decoding")             \
  43   _(VIDEO_OVERLAY, Feature, "video overlay")                                 \
  44   _(HW_DECODED_VIDEO_ZERO_COPY, Feature, "Hardware decoded video zero copy") \
  45   _(VP8_HW_DECODE, Feature, "VP8 hardware decoding")                         \
  46   _(VP9_HW_DECODE, Feature, "VP9 hardware decoding")                         \
  47   _(DMABUF_SURFACE_EXPORT, Feature, "WebGL DMABuf surface export")           \
  48   _(REUSE_DECODER_DEVICE, Feature, "Reuse decoder device")
  49 /* Add new entries above this comment */
  50
  51 enum class Feature : uint32_t {
  52 #define MAKE_ENUM(name, type, desc) name,
  53   GFX_FEATURE_MAP(MAKE_ENUM)
  54 #undef MAKE_ENUM
  55       NumValues
  56 };
  57
  58 class FeatureState {
  59   friend class gfxConfig;
  60   friend class GfxConfigManager;  // for testing
  61
  62  public:
  63   FeatureState() { Reset(); }
  64
  65   bool IsEnabled() const;
  66   FeatureStatus GetValue() const;
  67
  68   void EnableByDefault();
  69   void DisableByDefault(FeatureStatus aStatus, const char* aMessage,
  70                         const nsACString& aFailureId);
  71   bool SetDefault(bool aEnable, FeatureStatus aDisableStatus,
  72                   const char* aDisableMessage);
  73   bool InitOrUpdate(bool aEnable, FeatureStatus aDisableStatus,
  74                     const char* aMessage);
  75   void SetDefaultFromPref(const char* aPrefName, bool aIsEnablePref,
  76                           bool aDefaultValue, Maybe<bool> aUserValue);
  77   void SetDefaultFromPref(const char* aPrefName, bool aIsEnablePref,
  78                           bool aDefaultValue);
  79   void UserEnable(const char* aMessage);
  80   void UserForceEnable(const char* aMessage);
  81   void UserDisable(const char* aMessage, const nsACString& aFailureId);
  82   void Disable(FeatureStatus aStatus, const char* aMessage,
  83                const nsACString& aFailureId);
  84   void ForceDisable(FeatureStatus aStatus, const char* aMessage,
  85                     const nsACString& aFailureId) {
  86     SetFailed(aStatus, aMessage, aFailureId);
  87   }
  88   void SetFailed(FeatureStatus aStatus, const char* aMessage,
  89                  const nsACString& aFailureId);
  90   bool MaybeSetFailed(bool aEnable, FeatureStatus aStatus, const char* aMessage,
  91                       const nsACString& aFailureId);
  92   bool MaybeSetFailed(FeatureStatus aStatus, const char* aMessage,
  93                       const nsACString& aFailureId);
  94
  95   // aType is "base", "user", "env", or "runtime".
  96   // aMessage may be null.
  97   typedef std::function<void(const char* aType, FeatureStatus aStatus,
  98                              const char* aMessage, const nsCString& aFailureId)>
  99       StatusIterCallback;
 100   void ForEachStatusChange(const StatusIterCallback& aCallback) const;
 101
 102   const char* GetFailureMessage() const;
 103   const nsCString& GetFailureId() const;
 104   nsCString GetStatusAndFailureIdString() const;
 105
 106   bool DisabledByDefault() const;
 107
 108  private:
 109   void SetUser(FeatureStatus aStatus, const char* aMessage,
 110                const nsACString& aFailureId);
 111   void SetEnvironment(FeatureStatus aStatus, const char* aMessage,
 112                       const nsACString& aFailureId);
 113   void SetRuntime(FeatureStatus aStatus, const char* aMessage,
 114                   const nsACString& aFailureId);
 115   bool IsForcedOnByUser() const;
 116   const char* GetRuntimeMessage() const;
 117   bool IsInitialized() const { return mDefault.IsInitialized(); }
 118
 119   void AssertInitialized() const { MOZ_ASSERT(IsInitialized()); }
 120
 121   // Clear all state.
 122   void Reset();
 123
 124  private:
 125   struct Instance {
 126     char mMessage[64];
 127     FeatureStatus mStatus;
 128     nsCString mFailureId;
 129
 130     void Set(FeatureStatus aStatus);
 131     void Set(FeatureStatus aStatus, const char* aMessage,
 132              const nsACString& aFailureId);
 133     bool IsInitialized() const { return mStatus != FeatureStatus::Unused; }
 134     const char* MessageOrNull() const {
 135       return mMessage[0] != '\0' ? mMessage : nullptr;
 136     }
 137     const char* Message() const {
 138       MOZ_ASSERT(MessageOrNull());
 139       return mMessage;
 140     }
 141     const nsCString& FailureId() const { return mFailureId; }
 142   };
 143
 144   // The default state is the state we decide on startup, based on the operating
 145   // system or a base preference.
 146   //
 147   // The user state factors in any changes to preferences that the user made.
 148   //
 149   // The environment state factors in any additional decisions made, such as
 150   // availability or blocklisting.
 151   //
 152   // The runtime state factors in any problems discovered at runtime.
 153   Instance mDefault;
 154   Instance mUser;
 155   Instance mEnvironment;
 156   Instance mRuntime;
 157 };
 158
 159 }  // namespace gfx
 160 }  // namespace mozilla
 161
 162 #endif  // mozilla_gfx_config_gfxFeature_h