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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebDOMMediaStreamTrack_h
     32 #define WebDOMMediaStreamTrack_h
     33 
     34 #include "public/platform/WebMediaStreamTrack.h"
     35 #include "public/platform/WebPrivatePtr.h"
     36 
     37 #if BLINK_IMPLEMENTATION
     38 #include "wtf/PassRefPtr.h"
     39 #endif
     40 
     41 namespace v8 {
     42 class Value;
     43 template <class T> class Handle;
     44 }
     45 
     46 namespace blink {
     47 
     48 class MediaStreamTrack;
     49 
     50 class WebDOMMediaStreamTrack {
     51 public:
     52     WebDOMMediaStreamTrack(const WebDOMMediaStreamTrack& b) { assign(b); }
     53     ~WebDOMMediaStreamTrack() { reset(); }
     54 
     55     WebDOMMediaStreamTrack& operator=(const WebDOMMediaStreamTrack& b)
     56     {
     57         assign(b);
     58         return *this;
     59     }
     60 
     61     bool isNull() const { return m_private.isNull(); }
     62 
     63     BLINK_EXPORT static WebDOMMediaStreamTrack fromV8Value(v8::Handle<v8::Value>);
     64 
     65     BLINK_EXPORT void reset();
     66     BLINK_EXPORT void assign(const WebDOMMediaStreamTrack&);
     67     BLINK_EXPORT WebMediaStreamTrack component() const;
     68 
     69 private:
     70 #if BLINK_IMPLEMENTATION
     71     WebDOMMediaStreamTrack(PassRefPtrWillBeRawPtr<MediaStreamTrack>);
     72 #endif
     73 
     74     WebPrivatePtr<MediaStreamTrack> m_private;
     75 };
     76 
     77 } // namespace blink
     78 
     79 #endif
     80