1 /* 2 * libjingle 3 * Copyright 2004 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_SESSION_MEDIA_AUDIOMONITOR_H_ 29 #define TALK_SESSION_MEDIA_AUDIOMONITOR_H_ 30 31 #include <vector> 32 #include "webrtc/p2p/base/port.h" 33 #include "webrtc/base/sigslot.h" 34 #include "webrtc/base/thread.h" 35 36 namespace cricket { 37 38 class VoiceChannel; 39 40 struct AudioInfo { 41 int input_level; 42 int output_level; 43 typedef std::vector<std::pair<uint32_t, int> > StreamList; 44 StreamList active_streams; // ssrcs contributing to output_level 45 }; 46 47 class AudioMonitor : public rtc::MessageHandler, 48 public sigslot::has_slots<> { 49 public: 50 AudioMonitor(VoiceChannel* voice_channel, rtc::Thread *monitor_thread); 51 ~AudioMonitor(); 52 53 void Start(int cms); 54 void Stop(); 55 56 VoiceChannel* voice_channel(); 57 rtc::Thread *monitor_thread(); 58 59 sigslot::signal2<AudioMonitor*, const AudioInfo&> SignalUpdate; 60 61 protected: 62 void OnMessage(rtc::Message *message); 63 void PollVoiceChannel(); 64 65 AudioInfo audio_info_; 66 VoiceChannel* voice_channel_; 67 rtc::Thread* monitoring_thread_; 68 rtc::CriticalSection crit_; 69 uint32_t rate_; 70 bool monitoring_; 71 }; 72 73 } 74 75 #endif // TALK_SESSION_MEDIA_AUDIOMONITOR_H_ 76
