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  • Committer: Package Import Robot
  • Author(s): Maximiliano Curia
  • Date: 2015-02-24 11:32:57 UTC
  • mfrom: (1.1.41 vivid)
  • Revision ID: package-import@ubuntu.com-20150224113257-gnupg4v7lzz18ij0
Tags: 4:14.12.2-1
* New upstream release (14.12.2).
* Bump Standards-Version to 3.9.6, no changes needed.

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protocols/jabber/libjingle/talk/session/phone/audiomonitor.cc
 
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/*
 
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 * libjingle
 
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 * Copyright 2004--2005, Google Inc.
 
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 *
 
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 * Redistribution and use in source and binary forms, with or without 
 
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 * modification, are permitted provided that the following conditions are met:
 
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 *
 
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 *  1. Redistributions of source code must retain the above copyright notice, 
 
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 *     this list of conditions and the following disclaimer.
 
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 *  2. Redistributions in binary form must reproduce the above copyright notice,
 
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 *     this list of conditions and the following disclaimer in the documentation
 
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 *     and/or other materials provided with the distribution.
 
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 *  3. The name of the author may not be used to endorse or promote products 
 
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 *     derived from this software without specific prior written permission.
 
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 *
 
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 
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 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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 */
 
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#include "talk/session/phone/audiomonitor.h"
 
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#include "talk/session/phone/voicechannel.h"
 
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#include <cassert>
 
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namespace cricket {
 
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const uint32 MSG_MONITOR_POLL = 1;
 
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const uint32 MSG_MONITOR_START = 2;
 
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const uint32 MSG_MONITOR_STOP = 3;
 
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const uint32 MSG_MONITOR_SIGNAL = 4;
 
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AudioMonitor::AudioMonitor(VoiceChannel *voice_channel, 
 
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                           talk_base::Thread *monitor_thread) {
 
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  voice_channel_ = voice_channel;
 
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  monitoring_thread_ = monitor_thread;
 
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  monitoring_ = false;
 
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}
 
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AudioMonitor::~AudioMonitor() {
 
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  voice_channel_->worker_thread()->Clear(this);
 
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  monitoring_thread_->Clear(this);
 
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}
 
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void AudioMonitor::Start(int milliseconds) {
 
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  rate_ = milliseconds;
 
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  if (rate_ < 100)
 
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    rate_ = 100;
 
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  voice_channel_->worker_thread()->Post(this, MSG_MONITOR_START);
 
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}
 
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void AudioMonitor::Stop() {
 
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  voice_channel_->worker_thread()->Post(this, MSG_MONITOR_STOP);
 
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}
 
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void AudioMonitor::OnMessage(talk_base::Message *message) {
 
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  talk_base::CritScope cs(&crit_);
 
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  switch (message->message_id) {
 
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  case MSG_MONITOR_START:
 
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    assert(talk_base::Thread::Current() == voice_channel_->worker_thread());
 
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    if (!monitoring_) {
 
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      monitoring_ = true;
 
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      PollVoiceChannel();
 
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    }
 
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    break;
 
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  case MSG_MONITOR_STOP:
 
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    assert(talk_base::Thread::Current() == voice_channel_->worker_thread());
 
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    if (monitoring_) {
 
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      monitoring_ = false;
 
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      voice_channel_->worker_thread()->Clear(this);
 
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    }
 
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    break;
 
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  case MSG_MONITOR_POLL:
 
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    assert(talk_base::Thread::Current() == voice_channel_->worker_thread());
 
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    PollVoiceChannel();
 
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    break;
 
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  case MSG_MONITOR_SIGNAL:
 
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    {
 
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      assert(talk_base::Thread::Current() == monitoring_thread_);
 
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      AudioInfo info = audio_info_;
 
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      crit_.Leave();
 
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      SignalUpdate(this, info);
 
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      crit_.Enter();
 
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    }
 
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    break;
 
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  }
 
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}
 
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void AudioMonitor::PollVoiceChannel() {
 
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  talk_base::CritScope cs(&crit_);
 
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  assert(talk_base::Thread::Current() == voice_channel_->worker_thread());
 
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  // Gather connection infos
 
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  audio_info_.input_level = voice_channel_->GetInputLevel_w();
 
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  audio_info_.output_level = voice_channel_->GetOutputLevel_w();
 
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  voice_channel_->GetActiveStreams_w(&audio_info_.active_streams);
 
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  // Signal the monitoring thread, start another poll timer
 
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  monitoring_thread_->Post(this, MSG_MONITOR_SIGNAL);
 
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  voice_channel_->worker_thread()->PostDelayed(rate_, this, MSG_MONITOR_POLL);
 
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}
 
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VoiceChannel *AudioMonitor::voice_channel() {
 
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  return voice_channel_;
 
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}
 
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talk_base::Thread *AudioMonitor::monitor_thread() {
 
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  return monitoring_thread_;
 
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}
 
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}