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Side by Side Diff: chrome/browser/extensions/api/tab_capture/tab_capture_registry.h

Issue 11038021: Implement Chrome Extension TabCapture API. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Media class renames/moves Created 8 years, 2 months ago
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1 // Copyright (c) 2012 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_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
6 #define CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
7
8 #include <map>
9
10 #include "chrome/browser/media/media_internals.h"
11 #include "chrome/browser/media/media_internals_observer.h"
12 #include "chrome/browser/profiles/profile_keyed_service.h"
13 #include "chrome/common/extensions/api/tab_capture.h"
14 #include "content/public/browser/browser_thread.h"
15 #include "content/public/browser/media_request_state.h"
16 #include "content/public/browser/notification_observer.h"
17 #include "content/public/browser/notification_registrar.h"
18 #include "content/public/common/media_stream_request.h"
19
20 class Profile;
21
22 namespace extensions {
23
24 namespace tab_capture = extensions::api::tab_capture;
25
26 class TabCaptureRegistry : public ProfileKeyedService,
27 public content::NotificationObserver {
28 public:
29 struct TabCaptureRequest {
30 std::string extension_id;
31 int tab_id;
32 tab_capture::TabCaptureState status;
33 };
34 // Maps device_id to information about the media stream request. This is
35 // expected to be small since maintaining a media stream is expensive.
36 typedef std::map<std::string, TabCaptureRequest> DeviceCaptureRequestMap;
Aaron Boodman 2012/10/16 04:19:27 This one can be private.
justinlin 2012/10/17 08:32:26 Done.
37 typedef std::vector<TabCaptureRequest> CaptureRequestList;
38
39 explicit TabCaptureRegistry(Profile* profile);
40
41 const CaptureRequestList GetCapturedTabs(const std::string& extension_id);
42 bool AddRequest(const std::string& key, const TabCaptureRequest& request);
43
44 private:
45 class MediaObserverProxy : public MediaInternalsObserver,
46 public base::RefCountedThreadSafe<
47 MediaObserverProxy,
48 content::BrowserThread::DeleteOnUIThread> {
49 public:
50 MediaObserverProxy() : handler_(NULL) {}
51 void Attach(TabCaptureRegistry* handler);
52 void Detach();
53
54 private:
55 friend struct content::BrowserThread::DeleteOnThread<
56 content::BrowserThread::UI>;
57 friend class base::DeleteHelper<MediaObserverProxy>;
58
59 // MediaInternalsObserver.
60 virtual void OnRequestUpdate(
61 const content::MediaStreamDevice& device,
62 const content::MediaRequestState state) OVERRIDE;
63
64 void RegisterAsMediaObserverOnIOThread(bool unregister);
65 void UpdateOnUIThread(
66 const content::MediaStreamDevice& device,
67 const content::MediaRequestState new_state);
68
69 virtual ~MediaObserverProxy() {}
70
71 TabCaptureRegistry* handler_;
72 };
73
74 virtual ~TabCaptureRegistry();
75
76 void RegisterAsMediaObserverOnIOThread(
77 TabCaptureRegistry* tab_capture_registry, bool unregister);
78
79 void HandleRequestUpdateOnUIThread(
80 const content::MediaStreamDevice& device,
81 const content::MediaRequestState state);
82
83 // content::NotificationObserver implementation.
84 virtual void Observe(int type,
85 const content::NotificationSource& source,
86 const content::NotificationDetails& details) OVERRIDE;
87
88 scoped_refptr<MediaObserverProxy> proxy_;
89 content::NotificationRegistrar registrar_;
90 Profile* const profile_;
91 DeviceCaptureRequestMap requests_;
92
93 DISALLOW_COPY_AND_ASSIGN(TabCaptureRegistry);
94 };
95
96 } // namespace extension
97
98 #endif // CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
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