Skia side RGB to YUV gpu conversion

src/core/SkImageGenerator.cpp

Index: src/core/SkImageGenerator.cpp
diff --git a/src/core/SkImageGenerator.cpp b/src/core/SkImageGenerator.cpp
index daa55a3a4dcbd842f34264f79a8fa18a7f293353..3332a49b4fd8d8516ef1279fb3564ef77af987a6 100644
--- a/src/core/SkImageGenerator.cpp
+++ b/src/core/SkImageGenerator.cpp
@@ -57,6 +57,14 @@ bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t r
 }
 #endif
 
+bool SkImageGenerator::getYUV8Planes(SkISize sizes[3], void* planes[3], int rowBytes[3]) {

[reed1, 2014/07/10 17:15:15]

This is a good place to add generic checks and/or asserts for sane input.

e.g.
    if planes != NULL but rowBytes == NULL
    if planes != NULL but planes[0] or [1] or [2] is NULL
    if rowBytes[i] < sizes[i].fWidth
    if sizes[i].fWidth or fHeight < 0

[sugoi1, 2014/07/10 17:54:24]

Done.

+    return this->onGetYUV8Planes(sizes, planes, rowBytes);
+}
+
+bool SkImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], int rowBytes[3]) {
+    return false;
+}
+
 /////////////////////////////////////////////////////////////////////////////////////////////
 
 SkData* SkImageGenerator::onRefEncodedData() {