rhubarb-lip-sync/rhubarb/lib/webrtc-8d2248ff/webrtc/pc/mediamonitor.h

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2016-06-21 20:13:05 +00:00
/*
* Copyright 2005 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
// Class to collect statistics from a media channel
#ifndef WEBRTC_PC_MEDIAMONITOR_H_
#define WEBRTC_PC_MEDIAMONITOR_H_
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/sigslot.h"
#include "webrtc/base/thread.h"
#include "webrtc/base/thread_annotations.h"
#include "webrtc/media/base/mediachannel.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_t 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_t 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 // WEBRTC_PC_MEDIAMONITOR_H_