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 CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_INFO_LOADER_H_ 6 #define CONTENT_RENDERER_MEDIA_ANDROID_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/time.h" 13 #include "content/common/content_export.h" 14 #include "content/renderer/media/active_loader.h" 15 #include "third_party/WebKit/public/platform/WebMediaPlayer.h" 16 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h" 17 #include "url/gurl.h" 18 19 namespace blink { 20 class WebFrame; 21 class WebURLLoader; 22 class WebURLRequest; 23 } 24 25 namespace content { 26 27 // This class provides additional information about a media URL. Currently it 28 // can be used to determine if a media URL has a single security origin and 29 // whether the URL passes a CORS access check. 30 class CONTENT_EXPORT MediaInfoLoader : private blink::WebURLLoaderClient { 31 public: 32 // Status codes for start operations on MediaInfoLoader. 33 enum Status { 34 // The operation failed, which may have been due to: 35 // - Page navigation 36 // - Server replied 4xx/5xx 37 // - The response was invalid 38 // - Connection was terminated 39 // 40 // At this point you should delete the loader. 41 kFailed, 42 43 // Everything went as planned. 44 kOk, 45 }; 46 47 // Start loading information about the given media URL. 48 // |url| - URL for the media resource to be loaded. 49 // |cors_mode| - HTML media element's crossorigin attribute. 50 // |ready_cb| - Called when media info has finished or failed loading. 51 typedef base::Callback<void(Status)> ReadyCB; 52 MediaInfoLoader( 53 const GURL& url, 54 blink::WebMediaPlayer::CORSMode cors_mode, 55 const ReadyCB& ready_cb); 56 virtual ~MediaInfoLoader(); 57 58 // Start loading media info. 59 void Start(blink::WebFrame* frame); 60 61 // Returns true if the media resource has a single origin, false otherwise. 62 // Only valid to call after the loader becomes ready. 63 bool HasSingleOrigin() const; 64 65 // Returns true if the media resource passed a CORS access control check. 66 // Only valid to call after the loader becomes ready. 67 bool DidPassCORSAccessCheck() const; 68 69 private: 70 friend class MediaInfoLoaderTest; 71 72 // blink::WebURLLoaderClient implementation. 73 virtual void willSendRequest( 74 blink::WebURLLoader* loader, 75 blink::WebURLRequest& newRequest, 76 const blink::WebURLResponse& redirectResponse); 77 virtual void didSendData( 78 blink::WebURLLoader* loader, 79 unsigned long long bytesSent, 80 unsigned long long totalBytesToBeSent); 81 virtual void didReceiveResponse( 82 blink::WebURLLoader* loader, 83 const blink::WebURLResponse& response); 84 virtual void didDownloadData( 85 blink::WebURLLoader* loader, 86 int data_length, 87 int encodedDataLength); 88 virtual void didReceiveData( 89 blink::WebURLLoader* loader, 90 const char* data, 91 int data_length, 92 int encoded_data_length); 93 virtual void didReceiveCachedMetadata( 94 blink::WebURLLoader* loader, 95 const char* data, int dataLength); 96 virtual void didFinishLoading( 97 blink::WebURLLoader* loader, 98 double finishTime); 99 virtual void didFail( 100 blink::WebURLLoader* loader, 101 const blink::WebURLError&); 102 103 void DidBecomeReady(Status status); 104 105 // Injected WebURLLoader instance for testing purposes. 106 scoped_ptr<blink::WebURLLoader> test_loader_; 107 108 // Keeps track of an active WebURLLoader and associated state. 109 scoped_ptr<ActiveLoader> active_loader_; 110 111 bool loader_failed_; 112 GURL url_; 113 blink::WebMediaPlayer::CORSMode cors_mode_; 114 bool single_origin_; 115 116 ReadyCB ready_cb_; 117 base::TimeTicks start_time_; 118 119 DISALLOW_COPY_AND_ASSIGN(MediaInfoLoader); 120 }; 121 122 } // namespace content 123 124 #endif // CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_INFO_LOADER_H_ 125