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25 #ifndef WebMediaStreamTrack_h
26 #define WebMediaStreamTrack_h
28 #include "WebCommon.h"
29 #include "WebNonCopyable.h"
30 #include "WebPrivatePtr.h"
33 class MediaStreamComponent;
37 class WebAudioSourceProvider;
39 class WebMediaStreamSource;
42 class WebMediaStreamTrack {
46 ExtraData() : m_owner(0) { }
47 virtual ~ExtraData() { }
49 BLINK_PLATFORM_EXPORT WebMediaStreamTrack owner();
52 BLINK_PLATFORM_EXPORT void setOwner(WebCore::MediaStreamComponent*);
56 WebCore::MediaStreamComponent* m_owner;
59 WebMediaStreamTrack() { }
60 WebMediaStreamTrack(const WebMediaStreamTrack& other) { assign(other); }
61 ~WebMediaStreamTrack() { reset(); }
63 WebMediaStreamTrack& operator=(const WebMediaStreamTrack& other)
68 BLINK_PLATFORM_EXPORT void assign(const WebMediaStreamTrack&);
70 BLINK_PLATFORM_EXPORT void initialize(const WebMediaStreamSource&);
71 BLINK_PLATFORM_EXPORT void initialize(const WebString& id, const WebMediaStreamSource&);
73 BLINK_PLATFORM_EXPORT void reset();
74 bool isNull() const { return m_private.isNull(); }
76 BLINK_PLATFORM_EXPORT WebString id() const;
78 BLINK_PLATFORM_EXPORT WebMediaStream stream() const;
79 BLINK_PLATFORM_EXPORT WebMediaStreamSource source() const;
80 BLINK_PLATFORM_EXPORT bool isEnabled() const;
82 // Extra data associated with this WebMediaStream.
83 // If non-null, the extra data pointer will be deleted when the object is destroyed.
84 // Setting the extra data pointer will cause any existing non-null
85 // extra data pointer to be deleted.
86 BLINK_PLATFORM_EXPORT ExtraData* extraData() const;
87 BLINK_PLATFORM_EXPORT void setExtraData(ExtraData*);
89 // The lifetime of the WebAudioSourceProvider should outlive the
90 // WebMediaStreamTrack, and clients are responsible for calling
91 // setSourceProvider(0) before the WebMediaStreamTrack is going away.
92 BLINK_PLATFORM_EXPORT void setSourceProvider(WebAudioSourceProvider*);
95 BLINK_PLATFORM_EXPORT WebMediaStreamTrack(PassRefPtr<WebCore::MediaStreamComponent>);
96 BLINK_PLATFORM_EXPORT WebMediaStreamTrack(WebCore::MediaStreamComponent*);
97 BLINK_PLATFORM_EXPORT WebMediaStreamTrack& operator=(WebCore::MediaStreamComponent*);
98 BLINK_PLATFORM_EXPORT operator WTF::PassRefPtr<WebCore::MediaStreamComponent>() const;
99 BLINK_PLATFORM_EXPORT operator WebCore::MediaStreamComponent*() const;
103 WebPrivatePtr<WebCore::MediaStreamComponent> m_private;
108 #endif // WebMediaStreamTrack_h