1 /* 2 * Copyright 2004 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_PC_AUDIOMONITOR_H_ 12 #define WEBRTC_PC_AUDIOMONITOR_H_ 13 14 #include <vector> 15 #include <utility> 16 17 #include "webrtc/base/sigslot.h" 18 #include "webrtc/base/thread.h" 19 #include "webrtc/p2p/base/port.h" 20 21 namespace cricket { 22 23 class VoiceChannel; 24 25 struct AudioInfo { 26 int input_level; 27 int output_level; 28 typedef std::vector<std::pair<uint32_t, int> > StreamList; 29 StreamList active_streams; // ssrcs contributing to output_level 30 }; 31 32 class AudioMonitor : public rtc::MessageHandler, 33 public sigslot::has_slots<> { 34 public: 35 AudioMonitor(VoiceChannel* voice_channel, rtc::Thread *monitor_thread); 36 ~AudioMonitor(); 37 38 void Start(int cms); 39 void Stop(); 40 41 VoiceChannel* voice_channel(); 42 rtc::Thread *monitor_thread(); 43 44 sigslot::signal2<AudioMonitor*, const AudioInfo&> SignalUpdate; 45 46 protected: 47 void OnMessage(rtc::Message *message); 48 void PollVoiceChannel(); 49 50 AudioInfo audio_info_; 51 VoiceChannel* voice_channel_; 52 rtc::Thread* monitoring_thread_; 53 rtc::CriticalSection crit_; 54 uint32_t rate_; 55 bool monitoring_; 56 }; 57 58 } // namespace cricket 59 60 #endif // WEBRTC_PC_AUDIOMONITOR_H_ 61