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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_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_ | 5 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_ |
6 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_ | 6 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_ |
7 | 7 |
| 8 #include <stdint.h> |
| 9 |
8 #include <string> | 10 #include <string> |
9 #include <vector> | 11 #include <vector> |
10 | 12 |
11 #include "base/callback.h" | 13 #include "base/callback.h" |
12 #include "base/compiler_specific.h" | 14 #include "base/compiler_specific.h" |
| 15 #include "base/macros.h" |
13 #include "base/memory/scoped_ptr.h" | 16 #include "base/memory/scoped_ptr.h" |
14 #include "base/memory/weak_ptr.h" | 17 #include "base/memory/weak_ptr.h" |
15 #include "chrome/common/extensions/api/media_galleries.h" | 18 #include "chrome/common/extensions/api/media_galleries.h" |
16 #include "chrome/common/media_galleries/metadata_types.h" | 19 #include "chrome/common/media_galleries/metadata_types.h" |
17 #include "content/public/browser/utility_process_host.h" | 20 #include "content/public/browser/utility_process_host.h" |
18 #include "content/public/browser/utility_process_host_client.h" | 21 #include "content/public/browser/utility_process_host_client.h" |
19 | 22 |
20 namespace IPC { | 23 namespace IPC { |
21 class Message; | 24 class Message; |
22 } | 25 } |
23 | 26 |
24 class Profile; | 27 class Profile; |
25 | 28 |
26 namespace metadata { | 29 namespace metadata { |
27 | 30 |
28 // Parses the media metadata of a Blob safely in a utility process. This class | 31 // Parses the media metadata of a Blob safely in a utility process. This class |
29 // expects the MIME type of the Blob to be already determined. It spawns a | 32 // expects the MIME type of the Blob to be already determined. It spawns a |
30 // utility process to do further MIME-type specific metadata extraction. | 33 // utility process to do further MIME-type specific metadata extraction. |
31 // All public methods and callbacks of this class run on the UI thread. | 34 // All public methods and callbacks of this class run on the UI thread. |
32 class SafeMediaMetadataParser : public content::UtilityProcessHostClient { | 35 class SafeMediaMetadataParser : public content::UtilityProcessHostClient { |
33 public: | 36 public: |
34 // |metadata_dictionary| is owned by the callback. | 37 // |metadata_dictionary| is owned by the callback. |
35 typedef base::Callback< | 38 typedef base::Callback< |
36 void(bool parse_success, | 39 void(bool parse_success, |
37 scoped_ptr<base::DictionaryValue> metadata_dictionary, | 40 scoped_ptr<base::DictionaryValue> metadata_dictionary, |
38 scoped_ptr<std::vector<AttachedImage> > attached_images)> | 41 scoped_ptr<std::vector<AttachedImage> > attached_images)> |
39 DoneCallback; | 42 DoneCallback; |
40 | 43 |
41 SafeMediaMetadataParser(Profile* profile, const std::string& blob_uuid, | 44 SafeMediaMetadataParser(Profile* profile, |
42 int64 blob_size, const std::string& mime_type, | 45 const std::string& blob_uuid, |
| 46 int64_t blob_size, |
| 47 const std::string& mime_type, |
43 bool get_attached_images); | 48 bool get_attached_images); |
44 | 49 |
45 // Should be called on the UI thread. |callback| also runs on the UI thread. | 50 // Should be called on the UI thread. |callback| also runs on the UI thread. |
46 void Start(const DoneCallback& callback); | 51 void Start(const DoneCallback& callback); |
47 | 52 |
48 private: | 53 private: |
49 enum ParserState { | 54 enum ParserState { |
50 INITIAL_STATE, | 55 INITIAL_STATE, |
51 STARTED_PARSING_STATE, | 56 STARTED_PARSING_STATE, |
52 FINISHED_PARSING_STATE, | 57 FINISHED_PARSING_STATE, |
53 }; | 58 }; |
54 | 59 |
55 // Private because content::UtilityProcessHostClient is ref-counted. | 60 // Private because content::UtilityProcessHostClient is ref-counted. |
56 ~SafeMediaMetadataParser() override; | 61 ~SafeMediaMetadataParser() override; |
57 | 62 |
58 // Launches the utility process. Must run on the IO thread. | 63 // Launches the utility process. Must run on the IO thread. |
59 void StartWorkOnIOThread(const DoneCallback& callback); | 64 void StartWorkOnIOThread(const DoneCallback& callback); |
60 | 65 |
61 // Notification from the utility process when it finishes parsing metadata. | 66 // Notification from the utility process when it finishes parsing metadata. |
62 // Runs on the IO thread. | 67 // Runs on the IO thread. |
63 void OnParseMediaMetadataFinished( | 68 void OnParseMediaMetadataFinished( |
64 bool parse_success, const base::DictionaryValue& metadata_dictionary, | 69 bool parse_success, const base::DictionaryValue& metadata_dictionary, |
65 const std::vector<AttachedImage>& attached_images); | 70 const std::vector<AttachedImage>& attached_images); |
66 | 71 |
67 // Sequence of functions that bounces from the IO thread to the UI thread to | 72 // Sequence of functions that bounces from the IO thread to the UI thread to |
68 // read the blob data, then sends the data back to the utility process. | 73 // read the blob data, then sends the data back to the utility process. |
69 void OnUtilityProcessRequestBlobBytes(int64 request_id, int64 byte_start, | 74 void OnUtilityProcessRequestBlobBytes(int64_t request_id, |
70 int64 length); | 75 int64_t byte_start, |
71 void StartBlobReaderOnUIThread(int64 request_id, int64 byte_start, | 76 int64_t length); |
72 int64 length); | 77 void StartBlobReaderOnUIThread(int64_t request_id, |
73 void OnBlobReaderDoneOnUIThread(int64 request_id, | 78 int64_t byte_start, |
| 79 int64_t length); |
| 80 void OnBlobReaderDoneOnUIThread(int64_t request_id, |
74 scoped_ptr<std::string> data, | 81 scoped_ptr<std::string> data, |
75 int64 /* blob_total_size */); | 82 int64_t /* blob_total_size */); |
76 void FinishRequestBlobBytes(int64 request_id, scoped_ptr<std::string> data); | 83 void FinishRequestBlobBytes(int64_t request_id, scoped_ptr<std::string> data); |
77 | 84 |
78 // UtilityProcessHostClient implementation. | 85 // UtilityProcessHostClient implementation. |
79 // Runs on the IO thread. | 86 // Runs on the IO thread. |
80 void OnProcessCrashed(int exit_code) override; | 87 void OnProcessCrashed(int exit_code) override; |
81 bool OnMessageReceived(const IPC::Message& message) override; | 88 bool OnMessageReceived(const IPC::Message& message) override; |
82 | 89 |
83 // All member variables are only accessed on the IO thread. | 90 // All member variables are only accessed on the IO thread. |
84 Profile* const profile_; | 91 Profile* const profile_; |
85 const std::string blob_uuid_; | 92 const std::string blob_uuid_; |
86 const int64 blob_size_; | 93 const int64_t blob_size_; |
87 const std::string mime_type_; | 94 const std::string mime_type_; |
88 bool get_attached_images_; | 95 bool get_attached_images_; |
89 | 96 |
90 DoneCallback callback_; | 97 DoneCallback callback_; |
91 | 98 |
92 base::WeakPtr<content::UtilityProcessHost> utility_process_host_; | 99 base::WeakPtr<content::UtilityProcessHost> utility_process_host_; |
93 | 100 |
94 // Verifies the messages from the utility process came at the right time. | 101 // Verifies the messages from the utility process came at the right time. |
95 // Initialized on the UI thread, but only accessed on the IO thread. | 102 // Initialized on the UI thread, but only accessed on the IO thread. |
96 ParserState parser_state_; | 103 ParserState parser_state_; |
97 | 104 |
98 DISALLOW_COPY_AND_ASSIGN(SafeMediaMetadataParser); | 105 DISALLOW_COPY_AND_ASSIGN(SafeMediaMetadataParser); |
99 }; | 106 }; |
100 | 107 |
101 } // namespace metadata | 108 } // namespace metadata |
102 | 109 |
103 #endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_ | 110 #endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SAFE_MEDIA_METADATA_PARSER_H_ |
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