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/*
* libjingle
* Copyright 2005 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.
*/
// Class to collect statistics from a media channel
#ifndef TALK_SESSION_MEDIA_MEDIAMONITOR_H_
#define TALK_SESSION_MEDIA_MEDIAMONITOR_H_
#include "talk/media/base/mediachannel.h"
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/sigslot.h"
#include "webrtc/base/thread.h"
#include "webrtc/base/thread_annotations.h"
namespace cricket {
// The base MediaMonitor class, independent of voice and video.
class MediaMonitor : public rtc::MessageHandler,
public sigslot::has_slots<> {
public:
MediaMonitor(rtc::Thread* worker_thread,
rtc::Thread* monitor_thread);
~MediaMonitor();
void Start(uint32 milliseconds);
void Stop();
protected:
void OnMessage(rtc::Message *message);
void PollMediaChannel();
virtual void GetStats() = 0;
virtual void Update() = 0;
rtc::CriticalSection crit_;
rtc::Thread* worker_thread_;
rtc::Thread* monitor_thread_;
bool monitoring_;
uint32 rate_;
};
// Templatized MediaMonitor that can deal with different kinds of media.
template<class MC, class MI>
class MediaMonitorT : public MediaMonitor {
public:
MediaMonitorT(MC* media_channel, rtc::Thread* worker_thread,
rtc::Thread* monitor_thread)
: MediaMonitor(worker_thread, monitor_thread),
media_channel_(media_channel) {}
sigslot::signal2<MC*, const MI&> SignalUpdate;
protected:
// These routines assume the crit_ lock is held by the calling thread.
virtual void GetStats() {
media_info_.Clear();
media_channel_->GetStats(&media_info_);
}
virtual void Update() EXCLUSIVE_LOCKS_REQUIRED(crit_) {
MI stats(media_info_);
crit_.Leave();
SignalUpdate(media_channel_, stats);
crit_.Enter();
}
private:
MC* media_channel_;
MI media_info_;
};
typedef MediaMonitorT<VoiceMediaChannel, VoiceMediaInfo> VoiceMediaMonitor;
typedef MediaMonitorT<VideoMediaChannel, VideoMediaInfo> VideoMediaMonitor;
typedef MediaMonitorT<DataMediaChannel, DataMediaInfo> DataMediaMonitor;
} // namespace cricket
#endif // TALK_SESSION_MEDIA_MEDIAMONITOR_H_
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