Add support for the Rec601 YUV color space to GrYUVtoRGBEffect.

include/core/SkImageInfo.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImageInfo_DEFINED
 #define SkImageInfo_DEFINED
 
@@ skipping 115 matching lines @@
 /**
  *  Return true if alphaType is supported by colorType. If there is a canonical
  *  alphaType for this colorType, return it in canonical.
  */
 bool SkColorTypeValidateAlphaType(SkColorType colorType, SkAlphaType alphaType,
                                   SkAlphaType* canonical = NULL);
 
 ///////////////////////////////////////////////////////////////////////////////
 
 /**
+ *  Describes the color space a YUV pixel.
+ */
+enum SkYUVColorSpace {
+    /** Standard JPEG color space. */
+    kJPEG_SkYUVColorSpace,
+    /** SDTV standard Rec. 601 color space. Uses "studio swing" [16, 235] color
+       range. See http://en.wikipedia.org/wiki/Rec._601 for details. */
+    kRec601_SkYUVColorSpace,
+
+    kLastEnum_SkYUVColorSpace = kRec601_SkYUVColorSpace
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+/**
  *  Describe an image's dimensions and pixel type.
  */
 struct SkImageInfo {
 public:
     SkImageInfo()
         : fWidth(0)
         , fHeight(0)
         , fColorType(kUnknown_SkColorType)
         , fAlphaType(kIgnore_SkAlphaType)
     {}
@@ skipping 117 matching lines @@
 private:
     SkImageInfo(int width, int height, SkColorType ct, SkAlphaType at)
         : fWidth(width)
         , fHeight(height)
         , fColorType(ct)
         , fAlphaType(at)
     {}
 };
 
 #endif