Add color space xform support to SkJpegCodec (includes F16!)

tools/viewer/ImageSlide.cpp

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "ImageSlide.h"
 
 #include "SkBitmap.h"
@@ skipping 19 matching lines @@
     } else {
         // skbug.com/5428
         // drawImage() and drawBitmap() behave differently in sRGB mode.
         // canvas->drawImage(fImage.get(), 0, 0);
         canvas->drawBitmap(fOriginalBitmap, 0, 0);
     }
 }
 
 void ImageSlide::load(SkScalar, SkScalar) {
     sk_sp<SkData> encoded = SkData::MakeFromFileName(fPath.c_str());
-    fImage = SkImage::MakeFromEncoded(encoded);
-    fImage->asLegacyBitmap(&fOriginalBitmap, SkImage::kRO_LegacyBitmapMode);
+    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded.get()));
+    if (!codec) {
+        return;
+    }
 
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded.get()));
-    sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getInfo().colorSpace());
-    sk_sp<SkColorSpace> dstSpace = SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named);
-    std::unique_ptr<SkColorSpaceXform> xform = SkColorSpaceXform::New(srcSpace, dstSpace);
-    fOriginalBitmap.deepCopyTo(&fXformedBitmap);
-    uint32_t* row = (uint32_t*) fXformedBitmap.getPixels();
-    for (int y = 0; y < fXformedBitmap.height(); y++) {
-        xform->applyTo8888(row, row, fXformedBitmap.width());
-        row = SkTAddOffset<uint32_t>(row, fXformedBitmap.rowBytes());
-    }
-    fXformedBitmap.notifyPixelsChanged(); // This is needed for the deepCopy
+    fOriginalBitmap.allocPixels(codec->getInfo());
+    codec->getPixels(codec->getInfo(), fOriginalBitmap.getPixels(), fOriginalBitmap.rowBytes());
+
+    SkImageInfo xformedInfo = codec->getInfo().makeColorSpace(
+            SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named));
+    fXformedBitmap.allocPixels(xformedInfo);
+    codec->getPixels(xformedInfo, fXformedBitmap.getPixels(), fXformedBitmap.rowBytes());
 }
 
 void ImageSlide::unload() {
     fImage.reset(nullptr);
 }