Optimize CMYK->RGBA (BGRA) transform for jpeg decodes

src/core/SkOpts.h

Index: src/core/SkOpts.h
diff --git a/src/core/SkOpts.h b/src/core/SkOpts.h
index 69da36254ce9986e4f3c952bf966a57a27a672cd..052ef5bac2b8d69189997f67e8c5446f9085e9bc 100644
--- a/src/core/SkOpts.h
+++ b/src/core/SkOpts.h
@@ -64,7 +64,9 @@ namespace SkOpts {
                         RGB_to_BGR1,   // i.e. swap RB and insert an opaque alpha
                         gray_to_RGB1,  // i.e. expand to color channels + an opaque alpha
                         grayA_to_RGBA, // i.e. expand to color channels
-                        grayA_to_rgbA; // i.e. expand to color channels and premultiply
+                        grayA_to_rgbA, // i.e. expand to color channels and premultiply
+                        CMYK_to_RGB1,  // i.e. convert color space

[scroggo, 2016/02/08 14:59:43]

I know this isn't the first appearance of it, but what does the "1" mean in this
context?

[mtklein, 2016/02/08 15:08:47]

opaque.  the alpha channel is 1.

+                        CMYK_to_BGR1;  // i.e. convert color space
 }
 
 #endif//SkOpts_DEFINED