Add support for the Rec601 YUV color space to GrYUVtoRGBEffect.

include/core/SkPixelRef.h

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPixelRef_DEFINED
 #define SkPixelRef_DEFINED
 
@@ skipping 202 matching lines @@
      */
     bool decodeInto(int pow2, SkBitmap* bitmap) {
         SkASSERT(pow2 >= 0);
         return this->onDecodeInto(pow2, bitmap);
     }
 
     /** Are we really wrapping a texture instead of a bitmap?
      */
     virtual GrTexture* getTexture() { return NULL; }
 
+    enum YUVColorSpace {

[rileya (GONE FROM CHROMIUM), 2014/09/11 06:59:30]

This would probably be better off somewhere else, any thoughts on where?

+        /** Standard JPEG color space. */
+        kJPEG_YUVColorSpace,
+        /** SDTV standard Rec. 601 color space. Uses "studio swing" [16, 235] color
+           range. See http://en.wikipedia.org/wiki/Rec._601 for details. */
+        kRec601_YUVColorSpace
+    };
+
     /**
      *  If any planes or rowBytes is NULL, this should output the sizes and return true
      *  if it can efficiently return YUV planar data. If it cannot, it should return false.
      *
      *  If all planes and rowBytes are not NULL, then it should copy the associated Y,U,V data
      *  into those planes of memory supplied by the caller. It should validate that the sizes
      *  match what it expected. If the sizes do not match, it should return false.
+     *
+     *  If colorSpace is not NULL, the YUV color space of the data should be stored in the address
+     *  it points at.
      */
-    bool getYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]) {
-        return this->onGetYUV8Planes(sizes, planes, rowBytes);
+    bool getYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
+                       YUVColorSpace* colorSpace) {
+        return this->onGetYUV8Planes(sizes, planes, rowBytes, colorSpace);
     }
 
     bool readPixels(SkBitmap* dst, const SkIRect* subset = NULL);
 
     /**
      *  Makes a deep copy of this PixelRef, respecting the requested config.
      *  @param colorType Desired colortype.
      *  @param subset Subset of this PixelRef to copy. Must be fully contained within the bounds of
      *         of this PixelRef.
      *  @return A new SkPixelRef, or NULL if either there is an error (e.g. the destination could
@@ skipping 69 matching lines @@
      *  able to make a copy of them (e.g. if the pixels are on the GPU).
      *
      *  The base class implementation returns false;
      */
     virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subsetOrNull);
 
     // default impl returns NULL.
     virtual SkData* onRefEncodedData();
 
     // default impl returns false.
-    virtual bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]);
+    virtual bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
+                                 YUVColorSpace* colorSpace);
 
     /**
      *  Returns the size (in bytes) of the internally allocated memory.
      *  This should be implemented in all serializable SkPixelRef derived classes.
      *  SkBitmap::fPixelRefOffset + SkBitmap::getSafeSize() should never overflow this value,
      *  otherwise the rendering code may attempt to read memory out of bounds.
      *
      *  @return default impl returns 0.
      */
     virtual size_t getAllocatedSizeInBytes() const;
@@ skipping 48 matching lines @@
     /**
      *  Allocate a new pixelref matching the specified ImageInfo, allocating
      *  the memory for the pixels. If the ImageInfo requires a ColorTable,
      *  the pixelref will ref() the colortable.
      *  On failure return NULL.
      */
     virtual SkPixelRef* create(const SkImageInfo&, size_t rowBytes, SkColorTable*) = 0;
 };
 
 #endif