Add support for the Rec601 YUV color space to GrYUVtoRGBEffect.

gm/yuvtorgbeffect.cpp

Index: gm/yuvtorgbeffect.cpp
diff --git a/gm/yuvtorgbeffect.cpp b/gm/yuvtorgbeffect.cpp
index 12676f262e2477f72cd3a19487ea2b7400e3a0fd..9750da813c4f32dfacf4b2656e798823167eec63 100644
--- a/gm/yuvtorgbeffect.cpp
+++ b/gm/yuvtorgbeffect.cpp
@@ -25,13 +25,23 @@ namespace skiagm {
  */
 class YUVtoRGBEffect : public GM {
 public:
-    YUVtoRGBEffect() {
+    YUVtoRGBEffect(SkPixelRef::YUVColorSpace colorSpace)
+    : fColorSpace(colorSpace) {
         this->setBGColor(0xFFFFFFFF);
     }
 
 protected:
     virtual SkString onShortName() SK_OVERRIDE {
-        return SkString("yuv_to_rgb_effect");
+        SkString out("yuv_to_rgb_effect_");
+        switch(fColorSpace) {
+            case SkPixelRef::kJPEG_YUVColorSpace:
+                out.append("jpeg");
+                break;
+            case SkPixelRef::kRec601_YUVColorSpace:
+                out.append("rec601");
+                break;
+        }
+        return out;
     }
 
     virtual SkISize onISize() SK_OVERRIDE {
@@ -107,7 +117,8 @@ protected:
             SkAutoTUnref<GrEffect> effect(
                         GrYUVtoRGBEffect::Create(texture[indices[i][0]],
                                                  texture[indices[i][1]],
-                                                 texture[indices[i][2]]));
+                                                 texture[indices[i][2]],
+                                                 SkPixelRef::kJPEG_YUVColorSpace));
             if (effect) {
                 SkMatrix viewMatrix;
                 viewMatrix.setTranslate(x, y);
@@ -127,11 +138,13 @@ protected:
 
 private:
     SkBitmap fBmp[3];
+    SkPixelRef::YUVColorSpace fColorSpace;
 
     typedef GM INHERITED;
 };
 
-DEF_GM( return SkNEW(YUVtoRGBEffect); )
+DEF_GM( return SkNEW_ARGS(YUVtoRGBEffect, (SkPixelRef::kJPEG_YUVColorSpace)); )
+DEF_GM( return SkNEW_ARGS(YUVtoRGBEffect, (SkPixelRef::kRec601_YUVColorSpace)); )
 }
 
 #endif