Implement canvas color space IDL format for 2D canvas

third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 32 matching lines @@
 
 class CanvasImageSource;
 class HTMLCanvasElement;
 class ImageData;
 class ImageBitmap;
 class WebLayer;
 
 enum CanvasColorSpace {
   kLegacyCanvasColorSpace,
   kSRGBCanvasColorSpace,
-  kLinearRGBCanvasColorSpace,
   kRec2020CanvasColorSpace,
   kP3CanvasColorSpace,
 };
 
+enum CanvasPixelFormat {
+  kRGBA8CanvasPixelFormat,
+  kRGB10A2CanvasPixelFormat,
+  kRGBA12CanvasPixelFormat,
+  kF16CanvasPixelFormat,
+};
+
 class CORE_EXPORT CanvasRenderingContext
     : public GarbageCollectedFinalized<CanvasRenderingContext>,
       public ScriptWrappable,
       public WebThread::TaskObserver {
   WTF_MAKE_NONCOPYABLE(CanvasRenderingContext);
   USING_PRE_FINALIZER(CanvasRenderingContext, dispose);
 
  public:
   virtual ~CanvasRenderingContext() {}
 
@@ skipping 13 matching lines @@
     ContextTypeCount,
   };
 
   static ContextType contextTypeFromId(const String& id);
   static ContextType resolveContextTypeAliases(ContextType);
 
   HTMLCanvasElement* canvas() const { return m_canvas; }
 
   CanvasColorSpace colorSpace() const { return m_colorSpace; };
   WTF::String colorSpaceAsString() const;
+  CanvasPixelFormat pixelFormat() const { return m_pixelFormat; };
+  WTF::String pixelFormatAsString() const;
+  bool linearPixelMath() const { return m_linearPixelMath; };
+
   // The color space in which the the content should be interpreted by the
   // compositor. This is always defined.
   gfx::ColorSpace gfxColorSpace() const;
   // The color space that should be used for SkSurface creation. This may
   // be nullptr.
   sk_sp<SkColorSpace> skSurfaceColorSpace() const;
   SkColorType colorType() const;
   ColorBehavior colorBehaviorForMediaDrawnToCanvas() const;
   bool skSurfacesUseColorSpace() const;
 
@@ skipping 101 matching lines @@
   virtual void stop() = 0;
 
  private:
   void dispose();
 
   Member<HTMLCanvasElement> m_canvas;
   Member<OffscreenCanvas> m_offscreenCanvas;
   HashSet<String> m_cleanURLs;
   HashSet<String> m_dirtyURLs;
   CanvasColorSpace m_colorSpace;
+  CanvasPixelFormat m_pixelFormat;
+  bool m_linearPixelMath = false;
   CanvasContextCreationAttributes m_creationAttributes;
   bool m_finalizeFrameScheduled = false;
 };
 
 }  // namespace blink
 
 #endif