Add usage metrics for display and image color profiles

third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) Research In Motion Limited 2009-2010. 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
@@ skipping 31 matching lines @@
 #include "wtf/text/WTFString.h"
 
 #if USE(QCMSLIB)
 #include "qcms.h"
 #endif
 
 typedef Vector<char> ColorProfile;
 
 namespace blink {
 
+#if USE(QCMSLIB)
+enum ColorProfileStatus {
+    ColorProfileNone = 0,

[Noel Gordon, 2015/12/23 15:28:48]

I think we an reduce the number of entries here.  See the renaming suggestions
elsewhere.

ColorProfileEmpty (no size)
ColorProfileInvalidContent (size but invalid content)
ColorProfileInvalidProfile (valid size and content but bogus / unusable in some
way)
ColorProfileSuccess (valid size, content, usable)
ColorProfileSuccessEmbeddedsRGB (special case, embedded profiles).

+    ColorProfileNotFound = 1, // A profile was expected but could not be retrieved
+    ColorProfileIsCorrupted = 2,
+    ColorProfileIsNotRGB = 3,
+    ColorProfileIsNotAnInputProfile = 4,
+    ColorProfileIsV4 = 5,
+    ColorProfileFailedDecode = 6,
+    ColorProfileIsBogus = 7,
+    ColorProfileSuccess = 8,
+    ColorProfileSuccess_PNGsRGB = 9, // Using built-in sRGB tag (no actual embedded profile)
+    ValueCount = 10
+};
+#endif
+
 // ImagePlanes can be used to decode color components into provided buffers instead of using an ImageFrame.
 class PLATFORM_EXPORT ImagePlanes {
 public:
     ImagePlanes();
     ImagePlanes(void* planes[3], size_t rowBytes[3]);
 
     void* plane(int);
     size_t rowBytes(int) const;
 
 private:
@@ skipping 143 matching lines @@
         return !memcmp(&profileData[16], "RGB ", 4);
     }
 
     static bool inputDeviceColorProfile(const char* profileData, unsigned profileLength)
     {
         ASSERT_UNUSED(profileLength, profileLength >= iccColorProfileHeaderLength);
 
         return !memcmp(&profileData[12], "mntr", 4) || !memcmp(&profileData[12], "scnr", 4);
     }
 
+    static bool isICCv4(const char* profileData, unsigned profileLength)

[Noel Gordon, 2015/12/23 15:28:48]

This can go, I think.  Note we have an API to get the version

  unsigned major_profile_version =
qcms_profile_get_version(m_outputDeviceProfile) >> 8;

which can be used once we have read a profile, and we should perhaps record that
profile version in another stat if needed?

+    {
+        ASSERT_UNUSED(profileLength, profileLength >= iccColorProfileHeaderLength);
+
+        return profileData[8] == 4;
+    }
+
     class OutputDeviceProfile {
     public:
-        OutputDeviceProfile()
-            : m_outputDeviceProfile(0)
-        {
-            ColorProfile profile = screenColorProfile();
-            if (!profile.isEmpty())
-                m_outputDeviceProfile = qcms_profile_from_memory(profile.data(), profile.size());
-
-            if (m_outputDeviceProfile && qcms_profile_is_bogus(m_outputDeviceProfile)) {
-                qcms_profile_release(m_outputDeviceProfile);
-                m_outputDeviceProfile = 0;
-            }
-
-            if (!m_outputDeviceProfile)
-                m_outputDeviceProfile = qcms_profile_sRGB();
-            if (m_outputDeviceProfile)
-                qcms_profile_precache_output_transform(m_outputDeviceProfile);
-        }
+        OutputDeviceProfile();
 
         qcms_profile* profile() const { return m_outputDeviceProfile; }
 
     private:
         static ColorProfile screenColorProfile()
         {
             // FIXME: Add optional ICCv4 support and support for multiple monitors.
             WebVector<char> profile;
             Platform::current()->screenColorProfile(&profile);
 
@@ skipping 111 matching lines @@
 
     IntSize m_size;
     bool m_sizeAvailable;
     bool m_isAllDataReceived;
     bool m_failed;
 };
 
 } // namespace blink
 
 #endif