Add support for the Rec601 YUV color space to GrYUVtoRGBEffect.

src/core/SkImageGenerator.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImageGenerator.h"
 
 #ifndef SK_SUPPORT_LEGACY_IMAGEGENERATORAPI
@@ skipping 39 matching lines @@
 
 bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes) {
     SkASSERT(kIndex_8_SkColorType != info.colorType());
     if (kIndex_8_SkColorType == info.colorType()) {
         return false;
     }
     return this->getPixels(info, pixels, rowBytes, NULL, NULL);
 }
 #endif
 
-bool SkImageGenerator::getYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]) {
+bool SkImageGenerator::getYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
+                                     SkYUVColorSpace* colorSpace) {
 #ifdef SK_DEBUG
     // In all cases, we need the sizes array
     SkASSERT(sizes);
 
     bool isValidWithPlanes = (planes) && (rowBytes) &&
         ((planes[0]) && (planes[1]) && (planes[2]) &&
          (0  != rowBytes[0]) && (0  != rowBytes[1]) && (0  != rowBytes[2]));
     bool isValidWithoutPlanes =
         ((NULL == planes) ||
          ((NULL == planes[0]) && (NULL == planes[1]) && (NULL == planes[2]))) &&
@@ skipping 11 matching lines @@
               (sizes[0].fHeight >= 0) &&
               (sizes[1].fWidth  >= 0) &&
               (sizes[1].fHeight >= 0) &&
               (sizes[2].fWidth  >= 0) &&
               (sizes[2].fHeight >= 0) &&
               (rowBytes[0] >= (size_t)sizes[0].fWidth) &&
               (rowBytes[1] >= (size_t)sizes[1].fWidth) &&
               (rowBytes[2] >= (size_t)sizes[2].fWidth)));
 #endif
 
-    return this->onGetYUV8Planes(sizes, planes, rowBytes);
+    return this->onGetYUV8Planes(sizes, planes, rowBytes, colorSpace);
 }
 
 bool SkImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]) {
     return false;
 }
 
+bool SkImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
+                                       SkYUVColorSpace* colorSpace) {
+    // In order to maintain compatibility with clients that implemented the original
+    // onGetYUV8Planes interface, we assume that the color space is JPEG.
+    // TODO(rileya): remove this and the old onGetYUV8Planes once clients switch over to
+    // the new interface.
+    if (colorSpace) {
+        *colorSpace = kJPEG_SkYUVColorSpace;
+    }
+    return this->onGetYUV8Planes(sizes, planes, rowBytes);
+}
+
 /////////////////////////////////////////////////////////////////////////////////////////////
 
 SkData* SkImageGenerator::onRefEncodedData() {
     return NULL;
 }
 
 bool SkImageGenerator::onGetInfo(SkImageInfo*) {
     return false;
 }
 
 bool SkImageGenerator::onGetPixels(const SkImageInfo&, void*, size_t, SkPMColor*, int*) {
     return false;
 }