| /* |
| * libjingle |
| * Copyright 2011, Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| // This file contains classes for listening on changes on MediaStreams and |
| // MediaTracks and making sure appropriate action is taken. |
| // Example: If a user sets a rendererer on a local video track the renderer is |
| // connected to the appropriate camera. |
| |
| #ifndef TALK_APP_WEBRTC_MEDIASTREAMHANDLER_H_ |
| #define TALK_APP_WEBRTC_MEDIASTREAMHANDLER_H_ |
| |
| #include <list> |
| #include <vector> |
| |
| #include "talk/app/webrtc/mediastream.h" |
| #include "talk/app/webrtc/mediastreamprovider.h" |
| #include "talk/app/webrtc/peerconnection.h" |
| #include "talk/base/thread.h" |
| |
| namespace webrtc { |
| |
| // VideoTrackHandler listen to events on a VideoTrack instance and |
| // executes the requested change. |
| class VideoTrackHandler : public ObserverInterface { |
| public: |
| VideoTrackHandler(VideoTrackInterface* track, |
| MediaProviderInterface* provider); |
| virtual ~VideoTrackHandler(); |
| virtual void OnChanged(); |
| |
| protected: |
| virtual void OnRendererChanged() = 0; |
| virtual void OnStateChanged() = 0; |
| virtual void OnEnabledChanged() = 0; |
| |
| MediaProviderInterface* provider_; |
| VideoTrackInterface* video_track_; |
| |
| private: |
| MediaStreamTrackInterface::TrackState state_; |
| bool enabled_; |
| talk_base::scoped_refptr<VideoRendererWrapperInterface> renderer_; |
| }; |
| |
| class LocalVideoTrackHandler : public VideoTrackHandler { |
| public: |
| LocalVideoTrackHandler(LocalVideoTrackInterface* track, |
| MediaProviderInterface* provider); |
| virtual ~LocalVideoTrackHandler(); |
| |
| protected: |
| virtual void OnRendererChanged(); |
| virtual void OnStateChanged(); |
| virtual void OnEnabledChanged(); |
| |
| private: |
| talk_base::scoped_refptr<LocalVideoTrackInterface> local_video_track_; |
| }; |
| |
| class RemoteVideoTrackHandler : public VideoTrackHandler { |
| public: |
| RemoteVideoTrackHandler(VideoTrackInterface* track, |
| MediaProviderInterface* provider); |
| virtual ~RemoteVideoTrackHandler(); |
| |
| protected: |
| virtual void OnRendererChanged(); |
| virtual void OnStateChanged(); |
| virtual void OnEnabledChanged(); |
| |
| private: |
| talk_base::scoped_refptr<VideoTrackInterface> remote_video_track_; |
| }; |
| |
| class MediaStreamHandler : public ObserverInterface { |
| public: |
| MediaStreamHandler(MediaStreamInterface* stream, |
| MediaProviderInterface* provider); |
| ~MediaStreamHandler(); |
| MediaStreamInterface* stream(); |
| virtual void OnChanged(); |
| |
| protected: |
| talk_base::scoped_refptr<MediaStreamInterface> stream_; |
| MediaProviderInterface* provider_; |
| typedef std::vector<VideoTrackHandler*> VideoTrackHandlers; |
| VideoTrackHandlers video_handlers_; |
| }; |
| |
| class LocalMediaStreamHandler : public MediaStreamHandler { |
| public: |
| LocalMediaStreamHandler(MediaStreamInterface* stream, |
| MediaProviderInterface* provider); |
| }; |
| |
| class RemoteMediaStreamHandler : public MediaStreamHandler { |
| public: |
| RemoteMediaStreamHandler(MediaStreamInterface* stream, |
| MediaProviderInterface* provider); |
| }; |
| |
| class MediaStreamHandlers { |
| public: |
| explicit MediaStreamHandlers(MediaProviderInterface* provider); |
| ~MediaStreamHandlers(); |
| void AddRemoteStream(MediaStreamInterface* stream); |
| void RemoveRemoteStream(MediaStreamInterface* stream); |
| void CommitLocalStreams(StreamCollectionInterface* streams); |
| |
| private: |
| typedef std::list<MediaStreamHandler*> StreamHandlerList; |
| StreamHandlerList local_streams_handlers_; |
| StreamHandlerList remote_streams_handlers_; |
| MediaProviderInterface* provider_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // TALK_APP_WEBRTC_MEDIASTREAMHANDLER_H_ |
| |