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28 // Class to collect statistics from a media channel
30 #ifndef TALK_SESSION_MEDIA_MEDIAMONITOR_H_
31 #define TALK_SESSION_MEDIA_MEDIAMONITOR_H_
33 #include "talk/media/base/mediachannel.h"
34 #include "webrtc/base/criticalsection.h"
35 #include "webrtc/base/sigslot.h"
36 #include "webrtc/base/thread.h"
40 // The base MediaMonitor class, independent of voice and video.
41 class MediaMonitor : public rtc::MessageHandler,
42 public sigslot::has_slots<> {
44 MediaMonitor(rtc::Thread* worker_thread,
45 rtc::Thread* monitor_thread);
48 void Start(uint32 milliseconds);
52 void OnMessage(rtc::Message *message);
53 void PollMediaChannel();
54 virtual void GetStats() = 0;
55 virtual void Update() = 0;
57 rtc::CriticalSection crit_;
58 rtc::Thread* worker_thread_;
59 rtc::Thread* monitor_thread_;
64 // Templatized MediaMonitor that can deal with different kinds of media.
65 template<class MC, class MI>
66 class MediaMonitorT : public MediaMonitor {
68 MediaMonitorT(MC* media_channel, rtc::Thread* worker_thread,
69 rtc::Thread* monitor_thread)
70 : MediaMonitor(worker_thread, monitor_thread),
71 media_channel_(media_channel) {}
72 sigslot::signal2<MC*, const MI&> SignalUpdate;
75 // These routines assume the crit_ lock is held by the calling thread.
76 virtual void GetStats() {
78 media_channel_->GetStats(&media_info_);
80 virtual void Update() {
81 MI stats(media_info_);
83 SignalUpdate(media_channel_, stats);
92 typedef MediaMonitorT<VoiceMediaChannel, VoiceMediaInfo> VoiceMediaMonitor;
93 typedef MediaMonitorT<VideoMediaChannel, VideoMediaInfo> VideoMediaMonitor;
94 typedef MediaMonitorT<DataMediaChannel, DataMediaInfo> DataMediaMonitor;
96 } // namespace cricket
98 #endif // TALK_SESSION_MEDIA_MEDIAMONITOR_H_