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..1a3e94cd729b46a0b88379475bd2270a6eaa7547 100644
--- a/gm/yuvtorgbeffect.cpp
+++ b/gm/yuvtorgbeffect.cpp
@@ -35,7 +35,7 @@ protected:
     }
 
     virtual SkISize onISize() SK_OVERRIDE {
-        return SkISize::Make(334, 64);
+        return SkISize::Make(334, 128);
     }
 
     virtual uint32_t onGetFlags() const SK_OVERRIDE {
@@ -93,31 +93,36 @@ protected:
 
         static const SkScalar kDrawPad = 10.f;
         static const SkScalar kTestPad = 10.f;
-
-        SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fBmp[0].width()),
-                                           SkIntToScalar(fBmp[0].height()));
-        renderRect.outset(kDrawPad, kDrawPad);
-
-        SkScalar y = kDrawPad + kTestPad;
-        SkScalar x = kDrawPad + kTestPad;
-
-        const int indices[6][3] = {{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 0, 1}, {2, 1, 0}};
-
-        for (int i = 0; i < 6; ++i) {
-            SkAutoTUnref<GrEffect> effect(
-                        GrYUVtoRGBEffect::Create(texture[indices[i][0]],
-                                                 texture[indices[i][1]],
-                                                 texture[indices[i][2]]));
-            if (effect) {
-                SkMatrix viewMatrix;
-                viewMatrix.setTranslate(x, y);
-                drawState->reset(viewMatrix);
-                drawState->setRenderTarget(rt);
-                drawState->setColor(0xffffffff);
-                drawState->addColorEffect(effect, 1);
-                tt.target()->drawSimpleRect(renderRect);
-            }
-            x += renderRect.width() + kTestPad;
+        static const SkScalar kColorSpaceOffset = 64.f;
+
+        for (SkYUVColorSpace space = kJPEG_SkYUVColorSpace; space <= kLastEnum_SkYUVColorSpace;
+             ++space) {
+          SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fBmp[0].width()),
+                                             SkIntToScalar(fBmp[0].height()));
+          renderRect.outset(kDrawPad, kDrawPad);
+
+          SkScalar y = kDrawPad + kTestPad + space * kColorSpaceOffset;
+          SkScalar x = kDrawPad + kTestPad;
+
+          const int indices[6][3] = {{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 0, 1}, {2, 1, 0}};
+
+          for (int i = 0; i < 6; ++i) {
+              SkAutoTUnref<GrEffect> effect(
+                          GrYUVtoRGBEffect::Create(texture[indices[i][0]],
+                                                   texture[indices[i][1]],
+                                                   texture[indices[i][2]],
+                                                   space));
+              if (effect) {
+                  SkMatrix viewMatrix;
+                  viewMatrix.setTranslate(x, y);
+                  drawState->reset(viewMatrix);
+                  drawState->setRenderTarget(rt);
+                  drawState->setColor(0xffffffff);
+                  drawState->addColorEffect(effect, 1);
+                  tt.target()->drawSimpleRect(renderRect);
+              }
+              x += renderRect.width() + kTestPad;
+          }
         }
 
         GrUnlockAndUnrefCachedBitmapTexture(texture[0]);