[poc] curve-filter

third_party/WebKit/Source/platform/graphics/ColorSpaceFilterCache.h

Index: third_party/WebKit/Source/platform/graphics/ColorSpaceFilterCache.h
diff --git a/third_party/WebKit/Source/platform/graphics/ColorSpaceFilterCache.h b/third_party/WebKit/Source/platform/graphics/ColorSpaceFilterCache.h
new file mode 100644
index 0000000000000000000000000000000000000000..c68880b3895c03c0cabdfacf3bb11773fb5600b5
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/ColorSpaceFilterCache.h
@@ -0,0 +1,60 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ColorSpaceFilterCache_h
+#define ColorSpaceFilterCache_h
+
+#include "platform/PlatformExport.h"
+#include "wtf/PassRefPtr.h"
+
+class SkColorFilter;
+
+namespace blink {
+
+class ColorSpaceProfile;
+
+PLATFORM_EXPORT PassRefPtr<SkColorFilter> findColorTransform(ColorSpaceProfile* source, ColorSpaceProfile* target);
+PLATFORM_EXPORT void cacheColorTransform(ColorSpaceProfile* source, ColorSpaceProfile* target, SkColorFilter*);
+PLATFORM_EXPORT void pruneColorTransform(ColorSpaceProfile* target);
+
+struct ScreenDevice {
+
+    enum SystemColorProfiles {
+        sRGB        = 0, // sRGB: default (source).
+        sRGBCanvas  = 1, // sRGB: HTML <canvas> (target).
+        sRGBPlugin  = 2, // sRGB: PPAPI web font rendering access (target).
+        sRGBPrint   = 3, // sRGB: Printing (target).
+        sRGBTest    = 4, // sRGB: Unit testing (target).
+    };
+
+    enum VideoColorProfiles {
+        BT709       = 5, // Rec BT.709 HDTV-UTI (source).
+        BT601SMPTEC = 6, // Rec BT.601 SMPTE-C (source).
+        BT601EBUPAL = 7, // Rec BT.601 EBU PAL/SECAM (source).
+    };
+
+    static bool isDefaultDeviceId(uintptr_t deviceId)
+    {
+        return deviceId <= static_cast<uintptr_t>(BT601EBUPAL);
+    }
+
+    static bool isSRGBDeviceId(uintptr_t deviceId)
+    {
+        return deviceId <= static_cast<uintptr_t>(sRGBPrint);
+    }
+
+    static bool isSRGBCanvasDeviceId(uintptr_t deviceId)
+    {
+        return deviceId == static_cast<uintptr_t>(sRGBCanvas);
+    }
+
+    static bool shouldIgnoreDeviceId(uintptr_t deviceId)
+    {
+        return deviceId == static_cast<uintptr_t>(sRGBPlugin);
+    }
+};
+
+} // namespace blink
+
+#endif // ColorSpaceFilterCache_h