components/enhanced_bookmarks/image_store_util.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_UTIL_H_
   6 #define COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_UTIL_H_
   7
   8 #include "base/memory/ref_counted_memory.h"
   9 #include "ui/gfx/geometry/size.h"
  10 #include "ui/gfx/image/image.h"
  11
  12 namespace enhanced_bookmarks {
  13 // The two methods below archive and unarchive an image to and from a bag of
  14 // bytes. There is no API on gfx::Image capable of doing it while preserving the
  15 // scale of the image.
  16
  17 // Encode |image| to bytes, that can be decoded using the below |ImageForBytes|
  18 // function. If encoding fails, then returned scoped_refptr has NULL.
  19 scoped_refptr<base::RefCountedMemory> BytesForImage(const gfx::Image& image);
  20
  21 // Decode the image bytes encoded by the above |BytesForImage| function and
  22 // returns a gfx::Image. If decoding fails, returns an empty image.
  23 gfx::Image ImageForBytes(const scoped_refptr<base::RefCountedMemory>& data);
  24
  25 }
  26
  27 #endif  // COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_UTIL_H_