Make SkImage_Lazy::onMakeColorSpace return a SkImage_Lazy

Make SkImage_Lazy::onMakeColorSpace return a new SkImage_Lazy
with the color space of SkImage_Lazy::fInfo changed.

Update the call to SkImageGenerator::getPixels to specify
image info with this new color space.

Update the call to SkImageGenerator::generateTexture to specify
this new color space. Update SkPictureImageGenerator to respect
the color space argument. Add a SkTransferFunctionBehavior
argument to SkImageGenerator::generateTexture to indicate if
color conversion is to be doing using an xform canvas.

Update Generator_GrYUVProvider::refAsTextureProxy to include a
color conversion step to respect this new color space.

TBR=reed@google.com
Bug:739559
Change-Id: I156a858884659e9dfae739a653bab2ef89274959
Reviewed-on: https://skia-review.googlesource.com/21605
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Christopher Cameron <ccameron@chromium.org>
Reviewed-by: Christopher Cameron <ccameron@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/gpu/GrYUVProvider.h b/src/gpu/GrYUVProvider.h
index b5be426f6d..372a26a340 100644
--- a/src/gpu/GrYUVProvider.h
+++ b/src/gpu/GrYUVProvider.h
@@ -32,11 +32,15 @@ public:
      *  On success, this returns a texture proxy that has converted the YUV data from the provider
      *  into a form that is supported by the GPU (typically transformed into RGB). If useCache
      *  is true, then the texture will automatically have a key added, so it can be retrieved
-     *  from the cache (assuming it is requested by a provider w/ the same genID).
+     *  from the cache (assuming it is requested by a provider w/ the same genID). If srcColorSpace
+     *  and dstColorSpace are specified, then a color conversion from src to dst will be applied to
+     *  the pixels.
      *
      *  On failure (e.g. the provider had no data), this returns NULL.
      */
-    sk_sp<GrTextureProxy> refAsTextureProxy(GrContext*, const GrSurfaceDesc&, bool useCache);
+    sk_sp<GrTextureProxy> refAsTextureProxy(GrContext*, const GrSurfaceDesc&, bool useCache,
+                                            const SkColorSpace* srcColorSpace,
+                                            const SkColorSpace* dstColorSpace);
 
     virtual uint32_t onGetID() = 0;