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/*
* 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.
*/
#ifndef TALK_APP_WEBRTC_MEDIASTREAMTRACK_H_
#define TALK_APP_WEBRTC_MEDIASTREAMTRACK_H_
#include <string>
#include "talk/app/webrtc/mediastreaminterface.h"
#include "talk/app/webrtc/notifier.h"
namespace webrtc {
// MediaTrack implements the interface common to AudioTrackInterface and
// VideoTrackInterface.
template <typename T>
class MediaStreamTrack : public Notifier<T> {
public:
typedef typename T::TrackState TypedTrackState;
virtual std::string id() const { return id_; }
virtual MediaStreamTrackInterface::TrackState state() const {
return state_;
}
virtual bool enabled() const { return enabled_; }
virtual bool set_enabled(bool enable) {
bool fire_on_change = (enable != enabled_);
enabled_ = enable;
if (fire_on_change) {
Notifier<T>::FireOnChanged();
}
return fire_on_change;
}
virtual bool set_state(MediaStreamTrackInterface::TrackState new_state) {
bool fire_on_change = (state_ != new_state);
state_ = new_state;
if (fire_on_change)
Notifier<T>::FireOnChanged();
return true;
}
protected:
explicit MediaStreamTrack(const std::string& id)
: enabled_(true),
id_(id),
state_(MediaStreamTrackInterface::kInitializing) {
}
private:
bool enabled_;
std::string id_;
MediaStreamTrackInterface::TrackState state_;
};
} // namespace webrtc
#endif // TALK_APP_WEBRTC_MEDIASTREAMTRACK_H_
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