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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 "content/browser/utility_process_host.h" | |
13 | |
14 class SkBitmap; | |
15 | |
16 namespace chromeos { | |
17 | |
18 // Decodes an image in a sandboxed process. | |
19 class ImageDecoder : public UtilityProcessHost::Client { | |
20 public: | |
21 class Delegate { | |
22 public: | |
23 // Called when image is decoded. | |
24 // |decoder| is used to identify the image in case of decoding several | |
25 // images simultaneously. | |
26 virtual void OnImageDecoded(const ImageDecoder* decoder, | |
27 const SkBitmap& decoded_image) = 0; | |
28 | |
29 // Called when decoding image failed. Delegate can do some cleanup in | |
30 // this handler. | |
31 virtual void OnDecodeImageFailed(const ImageDecoder* decoder) {} | |
32 | |
33 protected: | |
34 virtual ~Delegate() {} | |
35 }; | |
36 | |
37 ImageDecoder(Delegate* delegate, | |
38 const std::string& image_data); | |
39 | |
40 // Starts image decoding. | |
41 void Start(); | |
42 | |
43 private: | |
44 // It's a reference counted object, so destructor is private. | |
45 virtual ~ImageDecoder(); | |
46 | |
47 // Overidden from UtilityProcessHost::Client: | |
48 virtual bool OnMessageReceived(const IPC::Message& message); | |
49 | |
50 // IPC message handlers. | |
51 void OnDecodeImageSucceeded(const SkBitmap& decoded_image); | |
52 void OnDecodeImageFailed(); | |
53 | |
54 // Launches sandboxed process that will decode the image. | |
55 void DecodeImageInSandbox(const std::vector<unsigned char>& image_data); | |
56 | |
57 Delegate* delegate_; | |
58 std::vector<unsigned char> image_data_; | |
59 content::BrowserThread::ID target_thread_id_; | |
60 | |
61 DISALLOW_COPY_AND_ASSIGN(ImageDecoder); | |
62 }; | |
63 | |
64 } // namespace chromeos | |
65 | |
66 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_IMAGE_DECODER_H_ | |
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