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1 // Copyright 2013 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 WEBKIT_RENDERER_MEDIA_MEDIA_INFO_LOADER_H_ | |
6 #define WEBKIT_RENDERER_MEDIA_MEDIA_INFO_LOADER_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/callback.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 #include "base/time.h" | |
13 #include "googleurl/src/gurl.h" | |
14 #include "third_party/WebKit/public/web/WebMediaPlayer.h" | |
15 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h" | |
16 #include "webkit/renderer/media/active_loader.h" | |
17 | |
18 namespace WebKit { | |
19 class WebFrame; | |
20 class WebURLLoader; | |
21 class WebURLRequest; | |
22 } | |
23 | |
24 namespace webkit_media { | |
25 | |
26 // This class provides additional information about a media URL. Currently it | |
27 // can be used to determine if a media URL has a single security origin and | |
28 // whether the URL passes a CORS access check. | |
29 class MediaInfoLoader : private WebKit::WebURLLoaderClient { | |
30 public: | |
31 // Status codes for start operations on MediaInfoLoader. | |
32 enum Status { | |
33 // The operation failed, which may have been due to: | |
34 // - Page navigation | |
35 // - Server replied 4xx/5xx | |
36 // - The response was invalid | |
37 // - Connection was terminated | |
38 // | |
39 // At this point you should delete the loader. | |
40 kFailed, | |
41 | |
42 // Everything went as planned. | |
43 kOk, | |
44 }; | |
45 | |
46 // Start loading information about the given media URL. | |
47 // |url| - URL for the media resource to be loaded. | |
48 // |cors_mode| - HTML media element's crossorigin attribute. | |
49 // |ready_cb| - Called when media info has finished or failed loading. | |
50 typedef base::Callback<void(Status)> ReadyCB; | |
51 MediaInfoLoader( | |
52 const GURL& url, | |
53 WebKit::WebMediaPlayer::CORSMode cors_mode, | |
54 const ReadyCB& ready_cb); | |
55 virtual ~MediaInfoLoader(); | |
56 | |
57 // Start loading media info. | |
58 void Start(WebKit::WebFrame* frame); | |
59 | |
60 // Returns true if the media resource has a single origin, false otherwise. | |
61 // Only valid to call after the loader becomes ready. | |
62 bool HasSingleOrigin() const; | |
63 | |
64 // Returns true if the media resource passed a CORS access control check. | |
65 // Only valid to call after the loader becomes ready. | |
66 bool DidPassCORSAccessCheck() const; | |
67 | |
68 private: | |
69 friend class MediaInfoLoaderTest; | |
70 | |
71 // WebKit::WebURLLoaderClient implementation. | |
72 virtual void willSendRequest( | |
73 WebKit::WebURLLoader* loader, | |
74 WebKit::WebURLRequest& newRequest, | |
75 const WebKit::WebURLResponse& redirectResponse); | |
76 virtual void didSendData( | |
77 WebKit::WebURLLoader* loader, | |
78 unsigned long long bytesSent, | |
79 unsigned long long totalBytesToBeSent); | |
80 virtual void didReceiveResponse( | |
81 WebKit::WebURLLoader* loader, | |
82 const WebKit::WebURLResponse& response); | |
83 virtual void didDownloadData( | |
84 WebKit::WebURLLoader* loader, | |
85 int data_length); | |
86 virtual void didReceiveData( | |
87 WebKit::WebURLLoader* loader, | |
88 const char* data, | |
89 int data_length, | |
90 int encoded_data_length); | |
91 virtual void didReceiveCachedMetadata( | |
92 WebKit::WebURLLoader* loader, | |
93 const char* data, int dataLength); | |
94 virtual void didFinishLoading( | |
95 WebKit::WebURLLoader* loader, | |
96 double finishTime); | |
97 virtual void didFail( | |
98 WebKit::WebURLLoader* loader, | |
99 const WebKit::WebURLError&); | |
100 | |
101 void DidBecomeReady(Status status); | |
102 | |
103 // Injected WebURLLoader instance for testing purposes. | |
104 scoped_ptr<WebKit::WebURLLoader> test_loader_; | |
105 | |
106 // Keeps track of an active WebURLLoader and associated state. | |
107 scoped_ptr<ActiveLoader> active_loader_; | |
108 | |
109 bool loader_failed_; | |
110 GURL url_; | |
111 WebKit::WebMediaPlayer::CORSMode cors_mode_; | |
112 bool single_origin_; | |
113 | |
114 ReadyCB ready_cb_; | |
115 base::TimeTicks start_time_; | |
116 | |
117 DISALLOW_COPY_AND_ASSIGN(MediaInfoLoader); | |
118 }; | |
119 | |
120 } // namespace webkit_media | |
121 | |
122 #endif // WEBKIT_RENDERER_MEDIA_MEDIA_INFO_LOADER_H_ | |
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