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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_USER_IMAGE_LOADER_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_USER_IMAGE_LOADER_H_ |
6 #define CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_USER_IMAGE_LOADER_H_ | 6 #define CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_USER_IMAGE_LOADER_H_ |
7 | 7 |
8 #include <map> | 8 #include <queue> |
dcheng
2015/03/23 11:52:09
I think you can remove this #include.
Theresa
2015/03/23 17:33:09
Done.
| |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "chrome/browser/image_decoder.h" | 14 #include "chrome/browser/image_decoder.h" |
15 | 15 |
16 class SkBitmap; | 16 class SkBitmap; |
17 | 17 |
18 namespace base { | 18 namespace base { |
19 class SequencedTaskRunner; | 19 class SequencedTaskRunner; |
20 } | 20 } |
21 | 21 |
22 namespace user_manager { | 22 namespace user_manager { |
23 class UserImage; | 23 class UserImage; |
24 } | 24 } |
25 | 25 |
26 namespace chromeos { | 26 namespace chromeos { |
27 | 27 |
28 // Helper that reads, decodes and optionally resizes an image on a background | 28 // Helper that reads, decodes and optionally resizes an image on a background |
29 // thread. Returns the image in the form of an SkBitmap. | 29 // thread. Returns the image in the form of an SkBitmap. |
30 class UserImageLoader : public base::RefCountedThreadSafe<UserImageLoader>, | 30 class UserImageLoader : public base::RefCountedThreadSafe<UserImageLoader> { |
31 public ImageDecoder::Delegate { | |
32 public: | 31 public: |
33 // Callback used to return the result of an image load operation. | 32 // Callback used to return the result of an image load operation. |
34 typedef base::Callback<void(const user_manager::UserImage& user_image)> | 33 typedef base::Callback<void(const user_manager::UserImage& user_image)> |
35 LoadedCallback; | 34 LoadedCallback; |
36 | 35 |
37 // All file I/O, decoding and resizing are done via |background_task_runner|. | 36 // All file I/O, decoding and resizing are done via |background_task_runner|. |
38 UserImageLoader( | 37 UserImageLoader( |
39 ImageDecoder::ImageCodec image_codec, | 38 ImageDecoder::ImageCodec image_codec, |
40 scoped_refptr<base::SequencedTaskRunner> background_task_runner); | 39 scoped_refptr<base::SequencedTaskRunner> background_task_runner); |
41 | 40 |
(...skipping 18 matching lines...) Expand all Loading... | |
60 ImageInfo(const std::string& file_path, | 59 ImageInfo(const std::string& file_path, |
61 int pixels_per_side, | 60 int pixels_per_side, |
62 const LoadedCallback& loaded_cb); | 61 const LoadedCallback& loaded_cb); |
63 ~ImageInfo(); | 62 ~ImageInfo(); |
64 | 63 |
65 const std::string file_path; | 64 const std::string file_path; |
66 const int pixels_per_side; | 65 const int pixels_per_side; |
67 const LoadedCallback loaded_cb; | 66 const LoadedCallback loaded_cb; |
68 }; | 67 }; |
69 | 68 |
70 typedef std::map<const ImageDecoder*, ImageInfo> ImageInfoMap; | 69 class UserImageRequest : public ImageDecoder::ImageRequest { |
70 public: | |
71 UserImageRequest(const ImageInfo& image_info, | |
72 const std::string& image_data, | |
73 UserImageLoader* user_image_loader); | |
71 | 74 |
72 ~UserImageLoader() override; | 75 // ImageDecoder::ImageRequest implementation. These callbacks will only be |
76 // invoked | |
dcheng
2015/03/23 11:52:08
This comment needs to be updated / rewrapped.
Theresa
2015/03/23 17:33:09
I rewrapped. I think the comment is still accurate
dcheng
2015/03/24 05:18:18
This class has no background_task_runner_ member i
Theresa
2015/03/24 23:51:42
Done.
| |
77 // via the |background_task_runner_|. | |
78 void OnImageDecoded(const SkBitmap& decoded_image) override; | |
79 void OnDecodeImageFailed() override; | |
80 | |
81 const ImageInfo image_info_; | |
dcheng
2015/03/23 11:52:08
Convention is to make these private and use access
Theresa
2015/03/23 17:33:09
Done.
| |
82 std::vector<unsigned char> image_data_; | |
dcheng
2015/03/23 11:52:08
Having to copy this is pretty sad. But I don't see
Theresa
2015/03/23 17:33:09
Acknowledged.
| |
83 UserImageLoader* user_image_loader_; | |
84 | |
85 private: | |
86 ~UserImageRequest() override; | |
87 }; | |
88 | |
89 ~UserImageLoader(); | |
73 | 90 |
74 // Reads the image from |image_info.file_path| and starts the decoding | 91 // Reads the image from |image_info.file_path| and starts the decoding |
75 // process. This method may only be invoked via the |background_task_runner_|. | 92 // process. This method may only be invoked via the |background_task_runner_|. |
76 void ReadAndDecodeImage(const ImageInfo& image_info); | 93 void ReadAndDecodeImage(const ImageInfo& image_info); |
77 | 94 |
78 // Decodes the image |data|. This method may only be invoked via the | 95 // Decodes the image |data|. This method may only be invoked via the |
79 // |background_task_runner_|. | 96 // |background_task_runner_|. |
80 void DecodeImage(const scoped_ptr<std::string> data, | 97 void DecodeImage(const scoped_ptr<std::string> data, |
81 const ImageInfo& image_info); | 98 const ImageInfo& image_info); |
82 | 99 |
83 // ImageDecoder::Delegate implementation. These callbacks will only be invoked | |
84 // via the |background_task_runner_|. | |
85 void OnImageDecoded(const ImageDecoder* decoder, | |
86 const SkBitmap& decoded_image) override; | |
87 void OnDecodeImageFailed(const ImageDecoder* decoder) override; | |
88 | |
89 // The foreground task runner on which |this| is instantiated, Start() is | 100 // The foreground task runner on which |this| is instantiated, Start() is |
90 // called and LoadedCallbacks are invoked. | 101 // called and LoadedCallbacks are invoked. |
91 scoped_refptr<base::SequencedTaskRunner> foreground_task_runner_; | 102 scoped_refptr<base::SequencedTaskRunner> foreground_task_runner_; |
92 | 103 |
93 // The background task runner on which file I/O, image decoding and resizing | 104 // The background task runner on which file I/O, image decoding and resizing |
94 // are done. | 105 // are done. |
95 scoped_refptr<base::SequencedTaskRunner> background_task_runner_; | 106 scoped_refptr<base::SequencedTaskRunner> background_task_runner_; |
96 | 107 |
97 // Specify how the file should be decoded in the utility process. | 108 // Specify how the file should be decoded in the utility process. |
98 const ImageDecoder::ImageCodec image_codec_; | 109 const ImageDecoder::ImageCodec image_codec_; |
99 | 110 |
100 // Holds information about the images currently being decoded. Accessed via | |
101 // |background_task_runner_| only. | |
102 ImageInfoMap image_info_map_; | |
103 | |
104 DISALLOW_COPY_AND_ASSIGN(UserImageLoader); | 111 DISALLOW_COPY_AND_ASSIGN(UserImageLoader); |
105 }; | 112 }; |
106 | 113 |
107 } // namespace chromeos | 114 } // namespace chromeos |
108 | 115 |
109 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_USER_IMAGE_LOADER_H_ | 116 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_USER_IMAGE_LOADER_H_ |
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