Support color xforms for kIndex8 pngs

src/codec/SkCodecImageGenerator.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCodecImageGenerator.h"
 
 SkImageGenerator* SkCodecImageGenerator::NewFromEncodedCodec(SkData* data) {
@@ skipping 19 matching lines @@
     , fData(SkRef(data))
 {}
 
 SkData* SkCodecImageGenerator::onRefEncodedData(SK_REFENCODEDDATA_CTXPARAM) {
     return SkRef(fData.get());
 }
 
 bool SkCodecImageGenerator::onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
         SkPMColor ctable[], int* ctableCount) {
 
-    SkCodec::Result result = fCodec->getPixels(info, pixels, rowBytes, nullptr, ctable,
+    // FIXME (msarett):
+    // We don't give the client the chance to request an SkColorSpace.  Until we improve
+    // the API, let's assume that they want legacy mode.
+    SkImageInfo decodeInfo = info.makeColorSpace(nullptr);
+
+    SkCodec::Result result = fCodec->getPixels(decodeInfo, pixels, rowBytes, nullptr, ctable,
             ctableCount);
     switch (result) {
         case SkCodec::kSuccess:
         case SkCodec::kIncompleteInput:
             return true;
         default:
             return false;
     }
 }
 
 bool SkCodecImageGenerator::onQueryYUV8(SkYUVSizeInfo* sizeInfo, SkYUVColorSpace* colorSpace) const
 {
     return fCodec->queryYUV8(sizeInfo, colorSpace);
 }
 
 bool SkCodecImageGenerator::onGetYUV8Planes(const SkYUVSizeInfo& sizeInfo, void* planes[3]) {
     SkCodec::Result result = fCodec->getYUV8Planes(sizeInfo, planes);
 
     switch (result) {
         case SkCodec::kSuccess:
         case SkCodec::kIncompleteInput:
             return true;
         default:
             return false;
     }
 }