106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
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/*
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* Copyright 2004 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include "webrtc/pc/audiomonitor.h"
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#include "webrtc/pc/voicechannel.h"
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namespace cricket {
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const uint32_t MSG_MONITOR_POLL = 1;
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const uint32_t MSG_MONITOR_START = 2;
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const uint32_t MSG_MONITOR_STOP = 3;
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const uint32_t MSG_MONITOR_SIGNAL = 4;
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AudioMonitor::AudioMonitor(VoiceChannel *voice_channel,
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rtc::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(RTC_FROM_HERE, this, MSG_MONITOR_START);
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}
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void AudioMonitor::Stop() {
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voice_channel_->worker_thread()->Post(RTC_FROM_HERE, this, MSG_MONITOR_STOP);
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}
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void AudioMonitor::OnMessage(rtc::Message *message) {
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rtc::CritScope cs(&crit_);
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switch (message->message_id) {
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case MSG_MONITOR_START:
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assert(rtc::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(rtc::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(rtc::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(rtc::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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rtc::CritScope cs(&crit_);
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assert(rtc::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(RTC_FROM_HERE, this, MSG_MONITOR_SIGNAL);
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voice_channel_->worker_thread()->PostDelayed(RTC_FROM_HERE, rate_, this,
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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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rtc::Thread *AudioMonitor::monitor_thread() {
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return monitoring_thread_;
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}
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} // namespace cricket
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