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/*
* libjingle
* Copyright 2004 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <assert.h>
#include "talk/session/media/audiomonitor.h"
#include "talk/session/media/voicechannel.h"
namespace cricket {
const uint32_t MSG_MONITOR_POLL = 1;
const uint32_t MSG_MONITOR_START = 2;
const uint32_t MSG_MONITOR_STOP = 3;
const uint32_t MSG_MONITOR_SIGNAL = 4;
AudioMonitor::AudioMonitor(VoiceChannel *voice_channel,
rtc::Thread *monitor_thread) {
voice_channel_ = voice_channel;
monitoring_thread_ = monitor_thread;
monitoring_ = false;
}
AudioMonitor::~AudioMonitor() {
voice_channel_->worker_thread()->Clear(this);
monitoring_thread_->Clear(this);
}
void AudioMonitor::Start(int milliseconds) {
rate_ = milliseconds;
if (rate_ < 100)
rate_ = 100;
voice_channel_->worker_thread()->Post(this, MSG_MONITOR_START);
}
void AudioMonitor::Stop() {
voice_channel_->worker_thread()->Post(this, MSG_MONITOR_STOP);
}
void AudioMonitor::OnMessage(rtc::Message *message) {
rtc::CritScope cs(&crit_);
switch (message->message_id) {
case MSG_MONITOR_START:
assert(rtc::Thread::Current() == voice_channel_->worker_thread());
if (!monitoring_) {
monitoring_ = true;
PollVoiceChannel();
}
break;
case MSG_MONITOR_STOP:
assert(rtc::Thread::Current() == voice_channel_->worker_thread());
if (monitoring_) {
monitoring_ = false;
voice_channel_->worker_thread()->Clear(this);
}
break;
case MSG_MONITOR_POLL:
assert(rtc::Thread::Current() == voice_channel_->worker_thread());
PollVoiceChannel();
break;
case MSG_MONITOR_SIGNAL:
{
assert(rtc::Thread::Current() == monitoring_thread_);
AudioInfo info = audio_info_;
crit_.Leave();
SignalUpdate(this, info);
crit_.Enter();
}
break;
}
}
void AudioMonitor::PollVoiceChannel() {
rtc::CritScope cs(&crit_);
assert(rtc::Thread::Current() == voice_channel_->worker_thread());
// Gather connection infos
audio_info_.input_level = voice_channel_->GetInputLevel_w();
audio_info_.output_level = voice_channel_->GetOutputLevel_w();
voice_channel_->GetActiveStreams_w(&audio_info_.active_streams);
// Signal the monitoring thread, start another poll timer
monitoring_thread_->Post(this, MSG_MONITOR_SIGNAL);
voice_channel_->worker_thread()->PostDelayed(rate_, this, MSG_MONITOR_POLL);
}
VoiceChannel *AudioMonitor::voice_channel() {
return voice_channel_;
}
rtc::Thread *AudioMonitor::monitor_thread() {
return monitoring_thread_;
}
}
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