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332 lines
9.2 KiB
332 lines
9.2 KiB
/*
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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/voicechannel.h"
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#include "talk/session/phone/channelmanager.h"
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#include "talk/session/phone/phonesessionclient.h"
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#include "talk/base/logging.h"
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#include <cassert>
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#undef SetPort
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namespace {
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// Delay before quality estimate is meaningful.
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uint32 kQualityDelay = 5000; // in ms
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}
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namespace cricket {
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VoiceChannel::VoiceChannel(ChannelManager *manager, Session *session, MediaChannel *channel) {
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channel_manager_ = manager;
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assert(channel_manager_->worker_thread() == Thread::Current());
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channel_ = channel;
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session_ = session;
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socket_monitor_ = NULL;
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audio_monitor_ = NULL;
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socket_ = session_->CreateSocket("rtp");
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socket_->SignalState.connect(this, &VoiceChannel::OnSocketState);
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socket_->SignalReadPacket.connect(this, &VoiceChannel::OnSocketRead);
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channel->SetInterface(this);
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enabled_ = false;
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paused_ = false;
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socket_writable_ = false;
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muted_ = false;
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LOG(INFO) << "Created voice channel";
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start_time_ = 0xFFFFFFFF - kQualityDelay;
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session->SignalState.connect(this, &VoiceChannel::OnSessionState);
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OnSessionState(session, session->state());
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}
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VoiceChannel::~VoiceChannel() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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enabled_ = false;
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ChangeState();
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delete socket_monitor_;
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delete audio_monitor_;
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Thread::Current()->Clear(this);
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if (socket_ != NULL)
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session_->DestroySocket(socket_);
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LOG(INFO) << "Destroyed voice channel";
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}
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void VoiceChannel::OnMessage(Message *pmsg) {
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switch (pmsg->message_id) {
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case MSG_ENABLE:
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EnableMedia_w();
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break;
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case MSG_DISABLE:
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DisableMedia_w();
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break;
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case MSG_MUTE:
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MuteMedia_w();
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break;
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case MSG_UNMUTE:
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UnmuteMedia_w();
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break;
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case MSG_SETSENDCODEC:
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SetSendCodec_w();
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break;
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}
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}
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void VoiceChannel::Enable(bool enable) {
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// Can be called from thread other than worker thread
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channel_manager_->worker_thread()->Post(this, enable ? MSG_ENABLE : MSG_DISABLE);
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}
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void VoiceChannel::Mute(bool mute) {
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// Can be called from thread other than worker thread
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channel_manager_->worker_thread()->Post(this, mute ? MSG_MUTE : MSG_UNMUTE);
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}
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MediaChannel * VoiceChannel::channel() {
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return channel_;
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}
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void VoiceChannel::OnSessionState(Session* session, Session::State state) {
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if ((state == Session::STATE_RECEIVEDACCEPT) ||
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(state == Session::STATE_RECEIVEDINITIATE)) {
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channel_manager_->worker_thread()->Post(this, MSG_SETSENDCODEC);
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}
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}
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void VoiceChannel::SetSendCodec_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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const PhoneSessionDescription* desc =
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static_cast<const PhoneSessionDescription*>(session()->remote_description());
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const char *codec = NULL;
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if (desc->codecs().size() > 0)
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PhoneSessionClient::FindMediaCodec(channel_manager_->media_engine(), desc, &codec);
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// The other client should have returned one of the codecs that we offered.
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// If they could not, they should have rejected the session. So, if we get
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// into this state, we're dealing with a bad client, so we may as well just
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// pick the mostt common format there is: payload type zero.
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if (codec == NULL)
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codec = "PCMU";
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channel_->SetCodec(codec);
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}
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void VoiceChannel::OnSocketState(P2PSocket *socket, P2PSocket::State state) {
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switch (state) {
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case P2PSocket::STATE_WRITABLE:
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SocketWritable_w();
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break;
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default:
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SocketNotWritable_w();
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break;
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}
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}
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void VoiceChannel::OnSocketRead(P2PSocket *socket, const char *data, size_t len) {
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assert(channel_manager_->worker_thread() == Thread::Current());
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// OnSocketRead gets called from P2PSocket; now pass data to MediaEngine
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channel_->OnPacketReceived(data, (int)len);
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}
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void VoiceChannel::SendPacket(const void *data, size_t len) {
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// SendPacket gets called from MediaEngine; send to socket
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// MediaEngine will call us on a random thread. The Send operation on the socket is
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// special in that it can handle this.
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socket_->Send(static_cast<const char *>(data), len);
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}
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void VoiceChannel::ChangeState() {
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if (paused_ || !enabled_ || !socket_writable_) {
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channel_->SetPlayout(false);
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channel_->SetSend(false);
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} else {
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if (muted_) {
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channel_->SetSend(false);
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channel_->SetPlayout(true);
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} else {
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channel_->SetSend(true);
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channel_->SetPlayout(true);
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}
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}
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}
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void VoiceChannel::PauseMedia_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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assert(!paused_);
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LOG(INFO) << "Voice channel paused";
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paused_ = true;
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ChangeState();
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}
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void VoiceChannel::UnpauseMedia_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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assert(paused_);
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LOG(INFO) << "Voice channel unpaused";
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paused_ = false;
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ChangeState();
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}
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void VoiceChannel::EnableMedia_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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if (enabled_)
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return;
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LOG(INFO) << "Voice channel enabled";
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enabled_ = true;
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start_time_ = Time();
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ChangeState();
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}
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void VoiceChannel::DisableMedia_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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if (!enabled_)
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return;
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LOG(INFO) << "Voice channel disabled";
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enabled_ = false;
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ChangeState();
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}
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void VoiceChannel::MuteMedia_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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if (muted_)
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return;
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LOG(INFO) << "Voice channel muted";
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muted_ = true;
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ChangeState();
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}
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void VoiceChannel::UnmuteMedia_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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if (!muted_)
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return;
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LOG(INFO) << "Voice channel unmuted";
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muted_ = false;
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ChangeState();
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}
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void VoiceChannel::SocketWritable_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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if (socket_writable_)
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return;
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LOG(INFO) << "Voice channel socket writable";
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socket_writable_ = true;
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ChangeState();
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}
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void VoiceChannel::SocketNotWritable_w() {
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assert(channel_manager_->worker_thread() == Thread::Current());
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if (!socket_writable_)
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return;
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LOG(INFO) << "Voice channel socket not writable";
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socket_writable_ = false;
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ChangeState();
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}
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void VoiceChannel::StartConnectionMonitor(int cms) {
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delete socket_monitor_;
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socket_monitor_ = new SocketMonitor(socket_, Thread::Current());
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socket_monitor_
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->SignalUpdate.connect(this, &VoiceChannel::OnConnectionMonitorUpdate);
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socket_monitor_->Start(cms);
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}
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void VoiceChannel::StopConnectionMonitor() {
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if (socket_monitor_ != NULL) {
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socket_monitor_->Stop();
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socket_monitor_->SignalUpdate.disconnect(this);
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delete socket_monitor_;
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socket_monitor_ = NULL;
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}
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}
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void VoiceChannel::OnConnectionMonitorUpdate(SocketMonitor *monitor,
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const std::vector<ConnectionInfo> &infos) {
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SignalConnectionMonitor(this, infos);
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}
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void VoiceChannel::StartAudioMonitor(int cms) {
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delete audio_monitor_;
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audio_monitor_ = new AudioMonitor(this, Thread::Current());
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audio_monitor_
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->SignalUpdate.connect(this, &VoiceChannel::OnAudioMonitorUpdate);
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audio_monitor_->Start(cms);
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}
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void VoiceChannel::StopAudioMonitor() {
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if (audio_monitor_ != NULL) {
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audio_monitor_ ->Stop();
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audio_monitor_ ->SignalUpdate.disconnect(this);
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delete audio_monitor_ ;
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audio_monitor_ = NULL;
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}
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}
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void VoiceChannel::OnAudioMonitorUpdate(AudioMonitor *monitor,
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const AudioInfo& info) {
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SignalAudioMonitor(this, info);
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}
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Session *VoiceChannel::session() {
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return session_;
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}
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bool VoiceChannel::HasQuality() {
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return Time() >= start_time_ + kQualityDelay;
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}
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float VoiceChannel::GetCurrentQuality() {
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return channel_->GetCurrentQuality();
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}
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int VoiceChannel::GetInputLevel_w() {
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return channel_manager_->media_engine()->GetInputLevel();
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}
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int VoiceChannel::GetOutputLevel_w() {
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return channel_->GetOutputLevel();
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}
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Thread* VoiceChannel::worker_thread() {
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return channel_manager_->worker_thread();
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}
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}
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