1 // Copyright (c) 2011 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 CHROME_BROWSER_CHROMEOS_LOGIN_IMAGE_DECODER_H_ 6 #define CHROME_BROWSER_CHROMEOS_LOGIN_IMAGE_DECODER_H_ 7 #pragma once 8 9 #include <string> 10 #include <vector> 11 12 #include "chrome/browser/utility_process_host.h" 13 14 namespace chromeos { 15 16 // Decodes an image in a sandboxed process. 17 class ImageDecoder : public UtilityProcessHost::Client { 18 public: 19 class Delegate { 20 public: 21 // Called when image is decoded. 22 // |decoder| is used to identify the image in case of decoding several 23 // images simultaneously. 24 virtual void OnImageDecoded(const ImageDecoder* decoder, 25 const SkBitmap& decoded_image) = 0; 26 27 // Called when decoding image failed. Delegate can do some cleanup in 28 // this handler. OnDecodeImageFailed(const ImageDecoder * decoder)29 virtual void OnDecodeImageFailed(const ImageDecoder* decoder) {} 30 31 protected: ~Delegate()32 virtual ~Delegate() {} 33 }; 34 35 ImageDecoder(Delegate* delegate, 36 const std::string& image_data); 37 38 // Starts image decoding. 39 void Start(); 40 41 private: 42 // It's a reference counted object, so destructor is private. ~ImageDecoder()43 virtual ~ImageDecoder() {} 44 45 // Overidden from UtilityProcessHost::Client: 46 virtual void OnDecodeImageSucceeded(const SkBitmap& decoded_image); 47 virtual void OnDecodeImageFailed(); 48 49 // Launches sandboxed process that will decode the image. 50 void DecodeImageInSandbox(const std::vector<unsigned char>& image_data); 51 52 Delegate* delegate_; 53 std::vector<unsigned char> image_data_; 54 BrowserThread::ID target_thread_id_; 55 56 DISALLOW_COPY_AND_ASSIGN(ImageDecoder); 57 }; 58 59 } // namespace chromeos 60 61 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_IMAGE_DECODER_H_ 62