1 files changed, 331 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/session/phone/voicechannel.cpp b/kopete/protocols/jabber/jingle/libjingle/talk/session/phone/voicechannel.cpp
new file mode 100644
index 00000000..58e1db60
--- /dev/null
+++ b/kopete/protocols/jabber/jingle/libjingle/talk/session/phone/voicechannel.cpp
@@ -0,0 +1,331 @@
+/*
+ * libjingle
+ * Copyright 2004--2005, 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 "talk/session/phone/voicechannel.h"
+#include "talk/session/phone/channelmanager.h"
+#include "talk/session/phone/phonesessionclient.h"
+#include "talk/base/logging.h"
+#include <cassert>
+#undef SetPort
+
+namespace {
+
+// Delay before quality estimate is meaningful.
+uint32 kQualityDelay = 5000; // in ms
+
+}
+
+namespace cricket {
+
+VoiceChannel::VoiceChannel(ChannelManager *manager, Session *session, MediaChannel *channel) {
+  channel_manager_ = manager;
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  channel_ = channel;
+  session_ = session;
+  socket_monitor_ = NULL;
+  audio_monitor_ = NULL;
+  socket_ = session_->CreateSocket("rtp");
+  socket_->SignalState.connect(this, &VoiceChannel::OnSocketState);
+  socket_->SignalReadPacket.connect(this, &VoiceChannel::OnSocketRead);
+  channel->SetInterface(this);
+  enabled_ = false;
+  paused_ = false;
+  socket_writable_ = false;
+  muted_ = false;
+  LOG(INFO) << "Created voice channel";
+  start_time_ = 0xFFFFFFFF - kQualityDelay;
+
+  session->SignalState.connect(this, &VoiceChannel::OnSessionState);
+  OnSessionState(session, session->state());
+}
+
+VoiceChannel::~VoiceChannel() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  enabled_ = false;
+  ChangeState();
+  delete socket_monitor_;
+  delete audio_monitor_;
+  Thread::Current()->Clear(this);
+  if (socket_ != NULL)
+    session_->DestroySocket(socket_);
+  LOG(INFO) << "Destroyed voice channel";
+}
+
+void VoiceChannel::OnMessage(Message *pmsg) {
+  switch (pmsg->message_id) {
+  case MSG_ENABLE:
+    EnableMedia_w();
+    break;
+
+  case MSG_DISABLE:
+    DisableMedia_w();
+    break;
+
+  case MSG_MUTE:
+    MuteMedia_w();
+    break;
+
+  case MSG_UNMUTE:
+    UnmuteMedia_w();
+    break;
+
+  case MSG_SETSENDCODEC:
+    SetSendCodec_w();
+    break;
+  }
+}
+
+void VoiceChannel::Enable(bool enable) {
+  // Can be called from thread other than worker thread
+  channel_manager_->worker_thread()->Post(this, enable ? MSG_ENABLE : MSG_DISABLE);
+}
+
+void VoiceChannel::Mute(bool mute) {
+  // Can be called from thread other than worker thread
+  channel_manager_->worker_thread()->Post(this, mute ? MSG_MUTE : MSG_UNMUTE);
+}
+
+MediaChannel * VoiceChannel::channel() {
+  return channel_;
+}
+
+void VoiceChannel::OnSessionState(Session* session, Session::State state) {
+  if ((state == Session::STATE_RECEIVEDACCEPT) ||
+      (state == Session::STATE_RECEIVEDINITIATE)) {
+    channel_manager_->worker_thread()->Post(this, MSG_SETSENDCODEC);
+  }
+}
+
+void VoiceChannel::SetSendCodec_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+
+  const PhoneSessionDescription* desc =
+      static_cast<const PhoneSessionDescription*>(session()->remote_description());
+
+  const char *codec = NULL;
+
+  if (desc->codecs().size() > 0)
+   PhoneSessionClient::FindMediaCodec(channel_manager_->media_engine(), desc, &codec);
+
+  // The other client should have returned one of the codecs that we offered.
+  // If they could not, they should have rejected the session.  So, if we get
+  // into this state, we're dealing with a bad client, so we may as well just
+  // pick the mostt common format there is: payload type zero.
+  if (codec == NULL)
+    codec = "PCMU";
+
+  channel_->SetCodec(codec);
+}
+
+void VoiceChannel::OnSocketState(P2PSocket *socket, P2PSocket::State state) {
+  switch (state) {
+  case P2PSocket::STATE_WRITABLE:
+    SocketWritable_w();
+    break;
+
+  default:
+    SocketNotWritable_w();
+    break;
+  }
+}
+
+void VoiceChannel::OnSocketRead(P2PSocket *socket, const char *data, size_t len) {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  // OnSocketRead gets called from P2PSocket; now pass data to MediaEngine
+  channel_->OnPacketReceived(data, (int)len);
+}
+
+void VoiceChannel::SendPacket(const void *data, size_t len) {
+  // SendPacket gets called from MediaEngine; send to socket
+  // MediaEngine will call us on a random thread.  The Send operation on the socket is
+  // special in that it can handle this.
+  socket_->Send(static_cast<const char *>(data), len);
+}
+
+void VoiceChannel::ChangeState() {
+  if (paused_ || !enabled_ || !socket_writable_) {
+    channel_->SetPlayout(false);
+    channel_->SetSend(false);
+  } else {
+    if (muted_) {
+      channel_->SetSend(false);
+      channel_->SetPlayout(true);
+    } else {
+      channel_->SetSend(true);
+      channel_->SetPlayout(true);
+    }
+  }
+}
+
+void VoiceChannel::PauseMedia_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  assert(!paused_);
+
+  LOG(INFO) << "Voice channel paused";
+  paused_ = true;
+  ChangeState();
+}
+
+void VoiceChannel::UnpauseMedia_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  assert(paused_);
+
+  LOG(INFO) << "Voice channel unpaused";
+  paused_ = false;
+  ChangeState();
+}
+
+void VoiceChannel::EnableMedia_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  if (enabled_)
+    return;
+
+  LOG(INFO) << "Voice channel enabled";
+  enabled_ = true;
+  start_time_ = Time();
+  ChangeState();
+}
+
+void VoiceChannel::DisableMedia_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  if (!enabled_)
+    return;
+
+  LOG(INFO) << "Voice channel disabled";
+  enabled_ = false;
+  ChangeState();
+}
+
+void VoiceChannel::MuteMedia_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  if (muted_)
+    return;
+
+  LOG(INFO) << "Voice channel muted";
+  muted_ = true;
+  ChangeState();
+}
+
+void VoiceChannel::UnmuteMedia_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  if (!muted_)
+    return;
+
+  LOG(INFO) << "Voice channel unmuted";
+  muted_ = false;
+  ChangeState();
+}
+
+void VoiceChannel::SocketWritable_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  if (socket_writable_)
+    return;
+
+  LOG(INFO) << "Voice channel socket writable";
+  socket_writable_ = true;
+  ChangeState();
+}
+
+void VoiceChannel::SocketNotWritable_w() {
+  assert(channel_manager_->worker_thread() == Thread::Current());
+  if (!socket_writable_)
+    return;
+
+  LOG(INFO) << "Voice channel socket not writable";
+  socket_writable_ = false;
+  ChangeState();
+}
+
+void VoiceChannel::StartConnectionMonitor(int cms) {
+  delete socket_monitor_;
+  socket_monitor_ = new SocketMonitor(socket_, Thread::Current());
+  socket_monitor_
+    ->SignalUpdate.connect(this, &VoiceChannel::OnConnectionMonitorUpdate);
+  socket_monitor_->Start(cms);
+}
+
+void VoiceChannel::StopConnectionMonitor() {
+  if (socket_monitor_ != NULL) {
+    socket_monitor_->Stop();
+    socket_monitor_->SignalUpdate.disconnect(this);
+    delete socket_monitor_;
+    socket_monitor_ = NULL;
+  }
+}
+
+void VoiceChannel::OnConnectionMonitorUpdate(SocketMonitor *monitor,
+                      const std::vector<ConnectionInfo> &infos) {
+  SignalConnectionMonitor(this, infos);
+}
+
+void VoiceChannel::StartAudioMonitor(int cms) {
+  delete audio_monitor_;
+  audio_monitor_ = new AudioMonitor(this, Thread::Current());
+  audio_monitor_
+    ->SignalUpdate.connect(this, &VoiceChannel::OnAudioMonitorUpdate);
+  audio_monitor_->Start(cms);
+}
+
+void VoiceChannel::StopAudioMonitor() {
+  if (audio_monitor_ != NULL) {
+    audio_monitor_ ->Stop();
+    audio_monitor_ ->SignalUpdate.disconnect(this);
+    delete audio_monitor_ ;
+    audio_monitor_  = NULL;
+  }
+}
+
+void VoiceChannel::OnAudioMonitorUpdate(AudioMonitor *monitor,
+                                        const AudioInfo& info) {
+  SignalAudioMonitor(this, info);
+}
+
+Session *VoiceChannel::session() {
+  return session_;
+}
+
+bool VoiceChannel::HasQuality() {
+  return Time() >= start_time_ + kQualityDelay;
+}
+
+float VoiceChannel::GetCurrentQuality() {
+  return channel_->GetCurrentQuality();
+}
+
+int VoiceChannel::GetInputLevel_w() {
+  return channel_manager_->media_engine()->GetInputLevel();
+}
+
+int VoiceChannel::GetOutputLevel_w() {
+  return channel_->GetOutputLevel();
+}
+
+Thread* VoiceChannel::worker_thread() {
+  return channel_manager_->worker_thread();
+}
+
+}