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31 #ifndef WebMediaStreamCenter_h
32 #define WebMediaStreamCenter_h
34 #include "WebVector.h"
38 class WebAudioSourceProvider;
40 class WebMediaStreamTrack;
44 class WebMediaStreamCenter {
46 virtual ~WebMediaStreamCenter() { }
48 // Stream functionality.
49 virtual void didCreateMediaStream(WebMediaStream&) = 0;
50 virtual bool didAddMediaStreamTrack(const WebMediaStream&, const WebMediaStreamTrack&) = 0;
51 virtual bool didRemoveMediaStreamTrack(const WebMediaStream&, const WebMediaStreamTrack&) = 0;
52 virtual void didStopLocalMediaStream(const WebMediaStream&) = 0;
54 // Track functionality.
55 virtual void didCreateMediaStreamTrack(const WebMediaStreamTrack&) { }
56 virtual void didEnableMediaStreamTrack(const WebMediaStreamTrack&) { }
57 virtual void didDisableMediaStreamTrack(const WebMediaStreamTrack&) { }
58 virtual bool didStopMediaStreamTrack(const WebMediaStreamTrack&) { return false; }
60 // Caller must take the ownership of the returned |WebAudioSourceProvider| object.
61 virtual WebAudioSourceProvider* createWebAudioSourceFromMediaStreamTrack(const WebMediaStreamTrack&) { return 0; }
66 #endif // WebMediaStreamCenter_h