components/suggestions/image_encoder_ios.mm

   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 #include "components/suggestions/image_encoder.h"
   6
   7 #import <UIKit/UIKit.h>
   8
   9 #include "base/mac/scoped_cftyperef.h"
  10 #include "skia/ext/skia_utils_ios.h"
  11
  12 namespace suggestions {
  13
  14 SkBitmap* DecodeJPEGToSkBitmap(const std::vector<unsigned char>& encoded_data) {
  15   NSData* data =
  16       [NSData dataWithBytes:encoded_data.data() length:encoded_data.size()];
  17   UIImage* image =
  18      [UIImage imageWithData:data scale:1.0];
  19   return new SkBitmap(gfx::CGImageToSkBitmap(image.CGImage, [image size], YES));
  20 }
  21
  22 bool EncodeSkBitmapToJPEG(const SkBitmap& bitmap,
  23                           std::vector<unsigned char>* dest) {
  24   base::ScopedCFTypeRef<CGColorSpaceRef> color_space(
  25       CGColorSpaceCreateDeviceRGB());
  26   UIImage* image =
  27       gfx::SkBitmapToUIImageWithColorSpace(bitmap, 1 /* scale */, color_space);
  28   NSData* data = UIImageJPEGRepresentation(image, 1.0);
  29   const char* bytes = reinterpret_cast<const char*>([data bytes]);
  30   dest->assign(bytes, bytes + [data length]);
  31   return true;
  32 }
  33
  34 }  // namespace suggestions