1 /* 2 * Copyright (C) 2012 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 WebMediaStreamCenter_h 32 #define WebMediaStreamCenter_h 33 34 #include "WebVector.h" 35 36 namespace blink { 37 class WebAudioSourceProvider; 38 class WebMediaStream; 39 class WebMediaStreamTrack; 40 class WebMediaStreamTrackSourcesRequest; 41 class WebSourceInfo; 42 class WebString; 43 44 class WebMediaStreamCenter { 45 public: 46 virtual ~WebMediaStreamCenter() { } 47 48 virtual bool getMediaStreamTrackSources(const WebMediaStreamTrackSourcesRequest&)= 0; 49 50 // Stream functionality. 51 virtual void didCreateMediaStream(WebMediaStream&) = 0; 52 virtual bool didAddMediaStreamTrack(const WebMediaStream&, const WebMediaStreamTrack&) = 0; 53 virtual bool didRemoveMediaStreamTrack(const WebMediaStream&, const WebMediaStreamTrack&) = 0; 54 virtual void didStopLocalMediaStream(const WebMediaStream&) = 0; 55 56 // Track functionality. 57 virtual void didCreateMediaStreamTrack(const WebMediaStreamTrack&) { } 58 virtual void didEnableMediaStreamTrack(const WebMediaStreamTrack&) { } 59 virtual void didDisableMediaStreamTrack(const WebMediaStreamTrack&) { } 60 virtual bool didStopMediaStreamTrack(const WebMediaStreamTrack&) { return false; } 61 62 // Caller must take the ownership of the returned |WebAudioSourceProvider| object. 63 virtual WebAudioSourceProvider* createWebAudioSourceFromMediaStreamTrack(const WebMediaStreamTrack&) { return 0; } 64 }; 65 66 } // namespace blink 67 68 #endif // WebMediaStreamCenter_h 69 70