diff options
Diffstat (limited to 'chromium/components/arc/bitmap/bitmap_struct_traits.cc')
-rw-r--r-- | chromium/components/arc/bitmap/bitmap_struct_traits.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/chromium/components/arc/bitmap/bitmap_struct_traits.cc b/chromium/components/arc/bitmap/bitmap_struct_traits.cc new file mode 100644 index 00000000000..51aa30f44f0 --- /dev/null +++ b/chromium/components/arc/bitmap/bitmap_struct_traits.cc @@ -0,0 +1,36 @@ +// Copyright 2016 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "components/arc/bitmap/bitmap_struct_traits.h" + +namespace mojo { + +bool StructTraits<arc::mojom::ArcBitmapDataView, SkBitmap>:: + Read(arc::mojom::ArcBitmapDataView data, SkBitmap* out) { + mojo::ArrayDataView<uint8_t> pixel_data; + data.GetPixelDataDataView(&pixel_data); + + SkImageInfo info = SkImageInfo::Make( + data.width(), data.height(), + kRGBA_8888_SkColorType, kPremul_SkAlphaType); + if (info.getSafeSize(info.minRowBytes()) > pixel_data.size()) { + // Insufficient buffer size. + return false; + } + + // Create the SkBitmap object which wraps the arc bitmap pixels. This + // doesn't copy and |data| and |bitmap| share the buffer. + SkBitmap bitmap; + if (!bitmap.installPixels(info, + const_cast<uint8_t*>(pixel_data.data()), + info.minRowBytes())) { + // Error in installing pixels. + return false; + } + + // Copy the pixels with converting color type. + return bitmap.copyTo(out, kN32_SkColorType); +} + +} // namespace mojo |