28e2075280
trunk/talk git-svn-id: http://webrtc.googlecode.com/svn/trunk@4318 4adac7df-926f-26a2-2b94-8c16560cd09d
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
/*
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* libjingle
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* Copyright 2011, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TALK_APP_WEBRTC_MEDIASTREAMTRACK_H_
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#define TALK_APP_WEBRTC_MEDIASTREAMTRACK_H_
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#include <string>
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#include "talk/app/webrtc/mediastreaminterface.h"
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#include "talk/app/webrtc/notifier.h"
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namespace webrtc {
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// MediaTrack implements the interface common to AudioTrackInterface and
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// VideoTrackInterface.
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template <typename T>
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class MediaStreamTrack : public Notifier<T> {
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public:
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typedef typename T::TrackState TypedTrackState;
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virtual std::string id() const { return id_; }
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virtual MediaStreamTrackInterface::TrackState state() const {
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return state_;
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}
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virtual bool enabled() const { return enabled_; }
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virtual bool set_enabled(bool enable) {
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bool fire_on_change = (enable != enabled_);
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enabled_ = enable;
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if (fire_on_change) {
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Notifier<T>::FireOnChanged();
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}
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return fire_on_change;
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}
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virtual bool set_state(MediaStreamTrackInterface::TrackState new_state) {
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bool fire_on_change = (state_ != new_state);
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state_ = new_state;
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if (fire_on_change)
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Notifier<T>::FireOnChanged();
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return true;
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}
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protected:
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explicit MediaStreamTrack(const std::string& id)
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: enabled_(true),
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id_(id),
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state_(MediaStreamTrackInterface::kInitializing) {
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}
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private:
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bool enabled_;
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std::string id_;
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MediaStreamTrackInterface::TrackState state_;
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};
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} // namespace webrtc
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#endif // TALK_APP_WEBRTC_MEDIASTREAMTRACK_H_
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