Perform color correction on png decodes

dm/DMSrcSink.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 "DMSrcSink.h"
 #include "Resources.h"
 #include "SkAndroidCodec.h"
@@ skipping 831 matching lines @@
     , fMode(mode)
     , fColorType(colorType)
 {}
 
 bool ColorCodecSrc::veto(SinkFlags flags) const {
     // Test to direct raster backends (8888 and 565).
     return flags.type != SinkFlags::kRaster || flags.approach != SinkFlags::kDirect;
 }
 
 Error ColorCodecSrc::draw(SkCanvas* canvas) const {
-    if (kRGB_565_SkColorType == canvas->imageInfo().colorType()) {
-        return Error::Nonfatal("No need to test color correction to 565 backend.");
-    }
+    bool runInLegacyMode = kBaseline_Mode == fMode;
+#if defined(SK_TEST_QCMS)
+    runInLegacyMode = runInLegacyMode || kQCMS_HPZR30w_Mode == fMode;
+#endif
 
-    if (nullptr == canvas->imageInfo().colorSpace() && kRGBA_F16_SkColorType == fColorType) {
-        return Error::Nonfatal("F16 does not draw in legacy mode.");
+    if (runInLegacyMode && canvas->imageInfo().colorSpace()) {
+        return Error::Nonfatal("Skipping tests that are only interesting in legacy mode.");
+    } else if (!runInLegacyMode && !canvas->imageInfo().colorSpace()) {
+        return Error::Nonfatal("Skipping tests that are only interesting in srgb mode.");
     }
 
     SkAutoTUnref<SkData> encoded(SkData::NewFromFileName(fPath.c_str()));
     if (!encoded) {
         return SkStringPrintf("Couldn't read %s.", fPath.c_str());
     }
 
     SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded));
     if (nullptr == codec.get()) {
         return SkStringPrintf("Couldn't create codec for %s.", fPath.c_str());
     }
 
     // Load the dst ICC profile.  This particular dst is fairly similar to Adobe RGB.
     sk_sp<SkData> dstData = SkData::MakeFromFileName(
             GetResourcePath("monitor_profiles/HP_ZR30w.icc").c_str());
     if (!dstData) {
         return "Cannot read monitor profile.  Is the resource path set correctly?";
     }
 
     sk_sp<SkColorSpace> dstSpace = nullptr;
     if (kDst_sRGB_Mode == fMode) {
         dstSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
     } else if (kDst_HPZR30w_Mode == fMode) {
         dstSpace = SkColorSpace::NewICC(dstData->data(), dstData->size());
     }
 
     SkImageInfo decodeInfo = codec->getInfo().makeColorType(fColorType).makeColorSpace(dstSpace);
+    if (kUnpremul_SkAlphaType == decodeInfo.alphaType()) {
+        decodeInfo = decodeInfo.makeAlphaType(kPremul_SkAlphaType);
+    }
+
     SkImageInfo bitmapInfo = decodeInfo;
     if (kRGBA_8888_SkColorType == decodeInfo.colorType() ||
         kBGRA_8888_SkColorType == decodeInfo.colorType())
     {
         bitmapInfo = bitmapInfo.makeColorType(kN32_SkColorType);
     }
 
     SkBitmap bitmap;
     if (!bitmap.tryAllocPixels(bitmapInfo)) {
         return SkStringPrintf("Image(%s) is too large (%d x %d)", fPath.c_str(),
                               bitmapInfo.width(), bitmapInfo.height());
     }
 
     size_t rowBytes = bitmap.rowBytes();
     SkCodec::Result r = codec->getPixels(decodeInfo, bitmap.getPixels(), rowBytes);
     if (SkCodec::kSuccess != r) {
         return SkStringPrintf("Couldn't getPixels %s. Error code %d", fPath.c_str(), r);
     }
 
     switch (fMode) {
         case kBaseline_Mode:
         case kDst_sRGB_Mode:
         case kDst_HPZR30w_Mode:
             canvas->drawBitmap(bitmap, 0, 0);
             break;
 #if defined(SK_TEST_QCMS)
         case kQCMS_HPZR30w_Mode: {
             sk_sp<SkData> srcData = codec->getICCData();
+            if (!srcData) {
+                return Error::Nonfatal("No ICC profile data.  Cannot test with QCMS.\n");
+            }
+
             SkAutoTCallVProc<qcms_profile, qcms_profile_release>
                     srcSpace(qcms_profile_from_memory(srcData->data(), srcData->size()));
             if (!srcSpace) {
                 return Error::Nonfatal(SkStringPrintf("QCMS cannot create profile for %s.\n",
                                        fPath.c_str()));
             }
 
             SkAutoTCallVProc<qcms_profile, qcms_profile_release>
                     dstSpace(qcms_profile_from_memory(dstData->data(), dstData->size()));
             SkASSERT(dstSpace);
@@ skipping 633 matching lines @@
             skr.visit(i, drawsAsSingletonPictures);
         }
         sk_sp<SkPicture> macroPic(macroRec.finishRecordingAsPicture());
 
         canvas->drawPicture(macroPic);
         return check_against_reference(bitmap, src, fSink);
     });
 }
 
 }  // namespace DM