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 void* encoded_data, size_t size) {
  15   NSData* data = [NSData dataWithBytes:encoded_data length:size];
  16   UIImage* image = [UIImage imageWithData:data scale:1.0];
  17   return new SkBitmap(gfx::CGImageToSkBitmap(image.CGImage, [image size], YES));
  18 }
  19
  20 bool EncodeSkBitmapToJPEG(const SkBitmap& bitmap,
  21                           std::vector<unsigned char>* dest) {
  22   base::ScopedCFTypeRef<CGColorSpaceRef> color_space(
  23       CGColorSpaceCreateDeviceRGB());
  24   UIImage* image =
  25       gfx::SkBitmapToUIImageWithColorSpace(bitmap, 1 /* scale */, color_space);
  26   NSData* data = UIImageJPEGRepresentation(image, 1.0);
  27   const char* bytes = reinterpret_cast<const char*>([data bytes]);
  28   dest->assign(bytes, bytes + [data length]);
  29   return true;
  30 }
  31
  32 }  // namespace suggestions