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40b276ea7b
webrtc/talk/session/media/call.cc
pthatcher@webrtc.org 40b276ea7b Cleanup little things found when refactoring. 
R=juberti@google.com

Review URL: https://webrtc-codereview.appspot.com/33519004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7880 4adac7df-926f-26a2-2b94-8c16560cd09d
2014-12-12 02:44:30 +00:00

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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 <string>
#include "talk/media/base/constants.h"
#include "talk/media/base/screencastid.h"
#include "webrtc/p2p/base/parsing.h"
#include "talk/session/media/call.h"
#include "talk/session/media/currentspeakermonitor.h"
#include "talk/session/media/mediasessionclient.h"
#include "webrtc/base/helpers.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/thread.h"
#include "webrtc/base/window.h"
namespace cricket {
const uint32 MSG_CHECKAUTODESTROY = 1;
const uint32 MSG_TERMINATECALL = 2;
const uint32 MSG_PLAYDTMF = 3;
namespace {
const int kDTMFDelay = 300; // msec
const size_t kMaxDTMFDigits = 30;
const int kSendToVoicemailTimeout = 1000*20;
const int kNoVoicemailTimeout = 1000*180;
const int kMediaMonitorInterval = 1000*15;
// In order to be the same as the server-side switching, this must be 100.
const int kAudioMonitorPollPeriodMillis = 100;
// V is a pointer type.
template<class K, class V>
V FindOrNull(const std::map<K, V>& map,
const K& key) {
typename std::map<K, V>::const_iterator it = map.find(key);
return (it != map.end()) ? it->second : NULL;
}
bool ContentContainsCrypto(const cricket::ContentInfo* content) {
if (content != NULL) {
const cricket::MediaContentDescription* desc =
static_cast<const cricket::MediaContentDescription*>(
content->description);
if (!desc || desc->cryptos().empty()) {
return false;
}
}
return true;
}
}
AudioSourceProxy::AudioSourceProxy(Call* call)
: call_(call) {
call_->SignalAudioMonitor.connect(this, &AudioSourceProxy::OnAudioMonitor);
call_->SignalMediaStreamsUpdate.connect(
this, &AudioSourceProxy::OnMediaStreamsUpdate);
}
void AudioSourceProxy::OnAudioMonitor(Call* call, const AudioInfo& info) {
SignalAudioMonitor(this, info);
}
void AudioSourceProxy::OnMediaStreamsUpdate(Call* call, Session* session,
const MediaStreams& added, const MediaStreams& removed) {
SignalMediaStreamsUpdate(this, session, added, removed);
}
Call::Call(MediaSessionClient* session_client)
: id_(rtc::CreateRandomId()),
session_client_(session_client),
has_video_(false),
has_data_(false),
muted_(false),
video_muted_(false),
send_to_voicemail_(true),
playing_dtmf_(false) {
audio_source_proxy_.reset(new AudioSourceProxy(this));
}
Call::~Call() {
while (media_session_map_.begin() != media_session_map_.end()) {
Session* session = media_session_map_.begin()->second.session;
RemoveSession(session);
session_client_->session_manager()->DestroySession(session);
}
rtc::Thread::Current()->Clear(this);
}
Session* Call::InitiateSession(const buzz::Jid& to,
const buzz::Jid& initiator,
const CallOptions& options) {
std::string id;
std::string initiator_name = initiator.Str();
return InternalInitiateSession(id, to, initiator_name, options);
}
Session *Call::InitiateSession(const std::string& id,
const buzz::Jid& to,
const CallOptions& options) {
std::string initiator_name;
return InternalInitiateSession(id, to, initiator_name, options);
}
void Call::IncomingSession(Session* session, const SessionDescription* offer) {
AddSession(session, offer);
// Make sure the session knows about the incoming ssrcs. This needs to be done
// prior to the SignalSessionState call, because that may trigger handling of
// these new SSRCs, so they need to be registered before then.
UpdateRemoteMediaStreams(session, offer->contents(), false);
// Missed the first state, the initiate, which is needed by
// call_client.
SignalSessionState(this, session, Session::STATE_RECEIVEDINITIATE);
}
void Call::AcceptSession(Session* session,
const cricket::CallOptions& options) {
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it != media_session_map_.end()) {
const SessionDescription* answer = session_client_->CreateAnswer(
session->remote_description(), options);
it->second.session->Accept(answer);
}
}
void Call::RejectSession(Session* session) {
// Assume polite decline.
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it != media_session_map_.end())
it->second.session->Reject(STR_TERMINATE_DECLINE);
}
void Call::TerminateSession(Session* session) {
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it != media_session_map_.end()) {
// Assume polite terminations.
it->second.session->Terminate();
}
}
void Call::Terminate() {
// Copy the list so that we can iterate over it in a stable way
std::vector<Session*> sessions = this->sessions();
// There may be more than one session to terminate
std::vector<Session*>::iterator it;
for (it = sessions.begin(); it != sessions.end(); ++it) {
TerminateSession(*it);
}
}
bool Call::SendViewRequest(Session* session,
const ViewRequest& view_request) {
StaticVideoViews::const_iterator it;
for (it = view_request.static_video_views.begin();
it != view_request.static_video_views.end(); ++it) {
StreamParams found_stream;
bool found = false;
MediaStreams* recv_streams = GetMediaStreams(session);
if (recv_streams)
found = recv_streams->GetVideoStream(it->selector, &found_stream);
if (!found) {
LOG(LS_WARNING) << "Trying to send view request for ("
<< it->selector.ssrc << ", '"
<< it->selector.groupid << "', '"
<< it->selector.streamid << "'"
<< ") is not in the local streams.";
return false;
}
}
XmlElements elems;
WriteError error;
if (!WriteJingleViewRequest(CN_VIDEO, view_request, &elems, &error)) {
LOG(LS_ERROR) << "Couldn't write out view request: " << error.text;
return false;
}
return session->SendInfoMessage(elems, session->remote_name());
}
void Call::SetVideoRenderer(Session* session, uint32 ssrc,
VideoRenderer* renderer) {
VideoChannel* video_channel = GetVideoChannel(session);
if (video_channel) {
video_channel->SetRenderer(ssrc, renderer);
LOG(LS_INFO) << "Set renderer of ssrc " << ssrc
<< " to " << renderer << ".";
} else {
LOG(LS_INFO) << "Failed to set renderer of ssrc " << ssrc << ".";
}
}
void Call::OnMessage(rtc::Message* message) {
switch (message->message_id) {
case MSG_CHECKAUTODESTROY:
// If no more sessions for this call, delete it
if (media_session_map_.empty())
session_client_->DestroyCall(this);
break;
case MSG_TERMINATECALL:
// Signal to the user that a timeout has happened and the call should
// be sent to voicemail.
if (send_to_voicemail_) {
SignalSetupToCallVoicemail();
}
// Callee didn't answer - terminate call
Terminate();
break;
case MSG_PLAYDTMF:
ContinuePlayDTMF();
}
}
std::vector<Session*> Call::sessions() {
std::vector<Session*> sessions;
MediaSessionMap::iterator it;
for (it = media_session_map_.begin(); it != media_session_map_.end(); ++it)
sessions.push_back(it->second.session);
return sessions;
}
bool Call::AddSession(Session* session, const SessionDescription* offer) {
bool succeeded = true;
MediaSession media_session;
media_session.session = session;
media_session.voice_channel = NULL;
media_session.video_channel = NULL;
media_session.data_channel = NULL;
media_session.recv_streams = NULL;
const ContentInfo* audio_offer = GetFirstAudioContent(offer);
const ContentInfo* video_offer = GetFirstVideoContent(offer);
const ContentInfo* data_offer = GetFirstDataContent(offer);
has_video_ = (video_offer != NULL);
has_data_ = (data_offer != NULL);
ASSERT(audio_offer != NULL);
// Create voice channel and start a media monitor.
media_session.voice_channel =
session_client_->channel_manager()->CreateVoiceChannel(
session, audio_offer->name, has_video_);
// voice_channel can be NULL in case of NullVoiceEngine.
if (media_session.voice_channel) {
media_session.voice_channel->SignalMediaMonitor.connect(
this, &Call::OnMediaMonitor);
media_session.voice_channel->StartMediaMonitor(kMediaMonitorInterval);
} else {
succeeded = false;
}
// If desired, create video channel and start a media monitor.
if (has_video_ && succeeded) {
media_session.video_channel =
session_client_->channel_manager()->CreateVideoChannel(
session,
video_offer->name,
true,
VideoOptions(),
media_session.voice_channel);
// video_channel can be NULL in case of NullVideoEngine.
if (media_session.video_channel) {
media_session.video_channel->SignalMediaMonitor.connect(
this, &Call::OnMediaMonitor);
media_session.video_channel->StartMediaMonitor(kMediaMonitorInterval);
} else {
succeeded = false;
}
}
// If desired, create data channel.
if (has_data_ && succeeded) {
const DataContentDescription* data = GetFirstDataContentDescription(offer);
if (data == NULL) {
succeeded = false;
} else {
DataChannelType data_channel_type = DCT_RTP;
if ((data->protocol() == kMediaProtocolSctp) ||
(data->protocol() == kMediaProtocolDtlsSctp)) {
data_channel_type = DCT_SCTP;
}
bool rtcp = false;
media_session.data_channel =
session_client_->channel_manager()->CreateDataChannel(
session, data_offer->name, rtcp, data_channel_type);
if (media_session.data_channel) {
media_session.data_channel->SignalDataReceived.connect(
this, &Call::OnDataReceived);
} else {
succeeded = false;
}
}
}
if (succeeded) {
// Add session to list, create channels for this session.
media_session.recv_streams = new MediaStreams;
media_session_map_[session->id()] = media_session;
session->SignalState.connect(this, &Call::OnSessionState);
session->SignalError.connect(this, &Call::OnSessionError);
session->SignalInfoMessage.connect(
this, &Call::OnSessionInfoMessage);
session->SignalRemoteDescriptionUpdate.connect(
this, &Call::OnRemoteDescriptionUpdate);
session->SignalReceivedTerminateReason
.connect(this, &Call::OnReceivedTerminateReason);
// If this call has the focus, enable this session's channels.
if (session_client_->GetFocus() == this) {
EnableSessionChannels(session, true);
}
// Signal client.
SignalAddSession(this, session);
}
return succeeded;
}
void Call::RemoveSession(Session* session) {
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it == media_session_map_.end())
return;
// Remove all the screencasts, if they haven't been already.
while (!it->second.started_screencasts.empty()) {
uint32 ssrc = it->second.started_screencasts.begin()->first;
if (!StopScreencastWithoutSendingUpdate(it->second.session, ssrc)) {
LOG(LS_ERROR) << "Unable to stop screencast with ssrc " << ssrc;
ASSERT(false);
}
}
// Destroy video channel
VideoChannel* video_channel = it->second.video_channel;
if (video_channel != NULL)
session_client_->channel_manager()->DestroyVideoChannel(video_channel);
// Destroy voice channel
VoiceChannel* voice_channel = it->second.voice_channel;
if (voice_channel != NULL)
session_client_->channel_manager()->DestroyVoiceChannel(voice_channel);
// Destroy data channel
DataChannel* data_channel = it->second.data_channel;
if (data_channel != NULL)
session_client_->channel_manager()->DestroyDataChannel(data_channel);
delete it->second.recv_streams;
media_session_map_.erase(it);
// Destroy speaker monitor
StopSpeakerMonitor(session);
// Signal client
SignalRemoveSession(this, session);
// The call auto destroys when the last session is removed
rtc::Thread::Current()->Post(this, MSG_CHECKAUTODESTROY);
}
VoiceChannel* Call::GetVoiceChannel(Session* session) const {
MediaSessionMap::const_iterator it = media_session_map_.find(session->id());
return (it != media_session_map_.end()) ? it->second.voice_channel : NULL;
}
VideoChannel* Call::GetVideoChannel(Session* session) const {
MediaSessionMap::const_iterator it = media_session_map_.find(session->id());
return (it != media_session_map_.end()) ? it->second.video_channel : NULL;
}
DataChannel* Call::GetDataChannel(Session* session) const {
MediaSessionMap::const_iterator it = media_session_map_.find(session->id());
return (it != media_session_map_.end()) ? it->second.data_channel : NULL;
}
MediaStreams* Call::GetMediaStreams(Session* session) const {
MediaSessionMap::const_iterator it = media_session_map_.find(session->id());
return (it != media_session_map_.end()) ? it->second.recv_streams : NULL;
}
void Call::EnableChannels(bool enable) {
MediaSessionMap::iterator it;
for (it = media_session_map_.begin(); it != media_session_map_.end(); ++it) {
EnableSessionChannels(it->second.session, enable);
}
}
void Call::EnableSessionChannels(Session* session, bool enable) {
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it == media_session_map_.end())
return;
VoiceChannel* voice_channel = it->second.voice_channel;
VideoChannel* video_channel = it->second.video_channel;
DataChannel* data_channel = it->second.data_channel;
if (voice_channel != NULL)
voice_channel->Enable(enable);
if (video_channel != NULL)
video_channel->Enable(enable);
if (data_channel != NULL)
data_channel->Enable(enable);
}
void Call::Mute(bool mute) {
muted_ = mute;
MediaSessionMap::iterator it;
for (it = media_session_map_.begin(); it != media_session_map_.end(); ++it) {
if (it->second.voice_channel != NULL)
it->second.voice_channel->MuteStream(0, mute);
}
}
void Call::MuteVideo(bool mute) {
video_muted_ = mute;
MediaSessionMap::iterator it;
for (it = media_session_map_.begin(); it != media_session_map_.end(); ++it) {
if (it->second.video_channel != NULL)
it->second.video_channel->MuteStream(0, mute);
}
}
bool Call::SendData(Session* session,
const SendDataParams& params,
const rtc::Buffer& payload,
SendDataResult* result) {
DataChannel* data_channel = GetDataChannel(session);
if (!data_channel) {
LOG(LS_WARNING) << "Could not send data: no data channel.";
return false;
}
return data_channel->SendData(params, payload, result);
}
void Call::PressDTMF(int event) {
// Queue up this digit
if (queued_dtmf_.size() < kMaxDTMFDigits) {
LOG(LS_INFO) << "Call::PressDTMF(" << event << ")";
queued_dtmf_.push_back(event);
if (!playing_dtmf_) {
ContinuePlayDTMF();
}
}
}
cricket::VideoFormat ScreencastFormatFromFps(int fps) {
// The capturer pretty much ignore this, but just in case we give it
// a resolution big enough to cover any expected desktop. In any
// case, it can't be 0x0, or the CaptureManager will fail to use it.
return cricket::VideoFormat(
1, 1,
cricket::VideoFormat::FpsToInterval(fps),
cricket::FOURCC_ANY);
}
bool Call::StartScreencast(Session* session,
const std::string& streamid, uint32 ssrc,
const ScreencastId& screenid, int fps) {
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it == media_session_map_.end()) {
return false;
}
VideoChannel *video_channel = GetVideoChannel(session);
if (!video_channel) {
LOG(LS_WARNING) << "Cannot add screencast"
<< " because there is no video channel.";
return false;
}
VideoCapturer* capturer = session_client_->channel_manager()->
CreateScreenCapturer(screenid);
if (!capturer) {
LOG(LS_WARNING) << "Could not create screencast capturer.";
return false;
}
if (!video_channel->AddScreencast(ssrc, capturer)) {
delete capturer;
LOG(LS_WARNING) << "Could not add screencast capturer.";
return false;
}
VideoFormat format = ScreencastFormatFromFps(fps);
if (!session_client_->channel_manager()->StartVideoCapture(
capturer, format)) {
LOG(LS_WARNING) << "Could not start video capture.";
video_channel->RemoveScreencast(ssrc);
return false;
}
if (!video_channel->SetCapturer(ssrc, capturer)) {
LOG(LS_WARNING) << "Could not start sending screencast.";
session_client_->channel_manager()->StopVideoCapture(
capturer, ScreencastFormatFromFps(fps));
video_channel->RemoveScreencast(ssrc);
}
// TODO(pthatcher): Once the CaptureManager has a nicer interface
// for removing captures (such as having StartCapture return a
// handle), remove this StartedCapture stuff.
it->second.started_screencasts.insert(
std::make_pair(ssrc, StartedCapture(capturer, format)));
// TODO(pthatcher): Verify we aren't re-using an existing id or
// ssrc.
StreamParams stream;
stream.id = streamid;
stream.ssrcs.push_back(ssrc);
VideoContentDescription* video = CreateVideoStreamUpdate(stream);
// TODO(pthatcher): Wait until view request before sending video.
video_channel->SetLocalContent(video, CA_UPDATE, NULL);
SendVideoStreamUpdate(session, video);
return true;
}
bool Call::StopScreencast(Session* session,
const std::string& streamid, uint32 ssrc) {
if (!StopScreencastWithoutSendingUpdate(session, ssrc)) {
return false;
}
VideoChannel *video_channel = GetVideoChannel(session);
if (!video_channel) {
LOG(LS_WARNING) << "Cannot add screencast"
<< " because there is no video channel.";
return false;
}
StreamParams stream;
stream.id = streamid;
// No ssrcs
VideoContentDescription* video = CreateVideoStreamUpdate(stream);
video_channel->SetLocalContent(video, CA_UPDATE, NULL);
SendVideoStreamUpdate(session, video);
return true;
}
bool Call::StopScreencastWithoutSendingUpdate(
Session* session, uint32 ssrc) {
MediaSessionMap::iterator it = media_session_map_.find(session->id());
if (it == media_session_map_.end()) {
return false;
}
VideoChannel *video_channel = GetVideoChannel(session);
if (!video_channel) {
LOG(LS_WARNING) << "Cannot remove screencast"
<< " because there is no video channel.";
return false;
}
StartedScreencastMap::const_iterator screencast_iter =
it->second.started_screencasts.find(ssrc);
if (screencast_iter == it->second.started_screencasts.end()) {
LOG(LS_WARNING) << "Could not stop screencast " << ssrc
<< " because there is no capturer.";
return false;
}
VideoCapturer* capturer = screencast_iter->second.capturer;
VideoFormat format = screencast_iter->second.format;
video_channel->SetCapturer(ssrc, NULL);
if (!session_client_->channel_manager()->StopVideoCapture(
capturer, format)) {
LOG(LS_WARNING) << "Could not stop screencast " << ssrc
<< " because could not stop capture.";
return false;
}
video_channel->RemoveScreencast(ssrc);
it->second.started_screencasts.erase(ssrc);
return true;
}
VideoContentDescription* Call::CreateVideoStreamUpdate(
const StreamParams& stream) {
VideoContentDescription* video = new VideoContentDescription();
video->set_multistream(true);
video->set_partial(true);
video->AddStream(stream);
return video;
}
void Call::SendVideoStreamUpdate(
Session* session, VideoContentDescription* video) {
// Takes the ownership of |video|.
rtc::scoped_ptr<VideoContentDescription> description(video);
const ContentInfo* video_info =
GetFirstVideoContent(session->local_description());
if (video_info == NULL) {
LOG(LS_WARNING) << "Cannot send stream update for video.";
return;
}
std::vector<ContentInfo> contents;
contents.push_back(
ContentInfo(video_info->name, video_info->type, description.get()));
session->SendDescriptionInfoMessage(contents);
}
void Call::ContinuePlayDTMF() {
playing_dtmf_ = false;
// Check to see if we have a queued tone
if (queued_dtmf_.size() > 0) {
playing_dtmf_ = true;
int tone = queued_dtmf_.front();
queued_dtmf_.pop_front();
LOG(LS_INFO) << "Call::ContinuePlayDTMF(" << tone << ")";
for (MediaSessionMap::iterator it = media_session_map_.begin();
it != media_session_map_.end(); ++it) {
if (it->second.voice_channel != NULL) {
it->second.voice_channel->PressDTMF(tone, true);
}
}
// Post a message to play the next tone or at least clear the playing_dtmf_
// bit.
rtc::Thread::Current()->PostDelayed(kDTMFDelay, this, MSG_PLAYDTMF);
}
}
void Call::Join(Call* call, bool enable) {
for (MediaSessionMap::iterator it = call->media_session_map_.begin();
it != call->media_session_map_.end(); ++it) {
// Shouldn't already exist.
ASSERT(media_session_map_.find(it->first) == media_session_map_.end());
media_session_map_[it->first] = it->second;
it->second.session->SignalState.connect(this, &Call::OnSessionState);
it->second.session->SignalError.connect(this, &Call::OnSessionError);
it->second.session->SignalReceivedTerminateReason
.connect(this, &Call::OnReceivedTerminateReason);
EnableSessionChannels(it->second.session, enable);
}
// Moved all the sessions over, so the other call should no longer have any.
call->media_session_map_.clear();
}
void Call::StartConnectionMonitor(Session* session, int cms) {
VoiceChannel* voice_channel = GetVoiceChannel(session);
if (voice_channel) {
voice_channel->SignalConnectionMonitor.connect(this,
&Call::OnConnectionMonitor);
voice_channel->StartConnectionMonitor(cms);
}
VideoChannel* video_channel = GetVideoChannel(session);
if (video_channel) {
video_channel->SignalConnectionMonitor.connect(this,
&Call::OnConnectionMonitor);
video_channel->StartConnectionMonitor(cms);
}
}
void Call::StopConnectionMonitor(Session* session) {
VoiceChannel* voice_channel = GetVoiceChannel(session);
if (voice_channel) {
voice_channel->StopConnectionMonitor();
voice_channel->SignalConnectionMonitor.disconnect(this);
}
VideoChannel* video_channel = GetVideoChannel(session);
if (video_channel) {
video_channel->StopConnectionMonitor();
video_channel->SignalConnectionMonitor.disconnect(this);
}
}
void Call::StartAudioMonitor(Session* session, int cms) {
VoiceChannel* voice_channel = GetVoiceChannel(session);
if (voice_channel) {
voice_channel->SignalAudioMonitor.connect(this, &Call::OnAudioMonitor);
voice_channel->StartAudioMonitor(cms);
}
}
void Call::StopAudioMonitor(Session* session) {
VoiceChannel* voice_channel = GetVoiceChannel(session);
if (voice_channel) {
voice_channel->StopAudioMonitor();
voice_channel->SignalAudioMonitor.disconnect(this);
}
}
bool Call::IsAudioMonitorRunning(Session* session) {
VoiceChannel* voice_channel = GetVoiceChannel(session);
if (voice_channel) {
return voice_channel->IsAudioMonitorRunning();
} else {
return false;
}
}
void Call::StartSpeakerMonitor(Session* session) {
if (speaker_monitor_map_.find(session->id()) == speaker_monitor_map_.end()) {
if (!IsAudioMonitorRunning(session)) {
StartAudioMonitor(session, kAudioMonitorPollPeriodMillis);
}
CurrentSpeakerMonitor* speaker_monitor =
new cricket::CurrentSpeakerMonitor(
audio_source_proxy_.get(), session);
speaker_monitor->SignalUpdate.connect(this, &Call::OnSpeakerMonitor);
speaker_monitor->Start();
speaker_monitor_map_[session->id()] = speaker_monitor;
} else {
LOG(LS_WARNING) << "Already started speaker monitor for session "
<< session->id() << ".";
}
}
void Call::StopSpeakerMonitor(Session* session) {
if (speaker_monitor_map_.find(session->id()) == speaker_monitor_map_.end()) {
LOG(LS_WARNING) << "Speaker monitor for session "
<< session->id() << " already stopped.";
} else {
CurrentSpeakerMonitor* monitor = speaker_monitor_map_[session->id()];
monitor->Stop();
speaker_monitor_map_.erase(session->id());
delete monitor;
}
}
void Call::OnConnectionMonitor(VoiceChannel* channel,
const std::vector<ConnectionInfo> &infos) {
SignalConnectionMonitor(this, infos);
}
void Call::OnMediaMonitor(VoiceChannel* channel, const VoiceMediaInfo& info) {
last_voice_media_info_ = info;
SignalMediaMonitor(this, info);
}
void Call::OnAudioMonitor(VoiceChannel* channel, const AudioInfo& info) {
SignalAudioMonitor(this, info);
}
void Call::OnSpeakerMonitor(CurrentSpeakerMonitor* monitor, uint32 ssrc) {
Session* session = static_cast<Session*>(monitor->session());
MediaStreams* recv_streams = GetMediaStreams(session);
if (recv_streams) {
StreamParams stream;
recv_streams->GetAudioStream(StreamSelector(ssrc), &stream);
SignalSpeakerMonitor(this, session, stream);
}
}
void Call::OnConnectionMonitor(VideoChannel* channel,
const std::vector<ConnectionInfo> &infos) {
SignalVideoConnectionMonitor(this, infos);
}
void Call::OnMediaMonitor(VideoChannel* channel, const VideoMediaInfo& info) {
SignalVideoMediaMonitor(this, info);
}
void Call::OnDataReceived(DataChannel* channel,
const ReceiveDataParams& params,
const rtc::Buffer& payload) {
SignalDataReceived(this, params, payload);
}
uint32 Call::id() {
return id_;
}
void Call::OnSessionState(BaseSession* base_session, BaseSession::State state) {
Session* session = static_cast<Session*>(base_session);
switch (state) {
case Session::STATE_RECEIVEDACCEPT:
UpdateRemoteMediaStreams(session,
session->remote_description()->contents(), false);
session_client_->session_manager()->signaling_thread()->Clear(this,
MSG_TERMINATECALL);
break;
case Session::STATE_RECEIVEDREJECT:
case Session::STATE_RECEIVEDTERMINATE:
session_client_->session_manager()->signaling_thread()->Clear(this,
MSG_TERMINATECALL);
break;
default:
break;
}
SignalSessionState(this, session, state);
}
void Call::OnSessionError(BaseSession* base_session, Session::Error error) {
session_client_->session_manager()->signaling_thread()->Clear(this,
MSG_TERMINATECALL);
SignalSessionError(this, static_cast<Session*>(base_session), error);
}
void Call::OnSessionInfoMessage(Session* session,
const buzz::XmlElement* action_elem) {
if (!IsJingleViewRequest(action_elem)) {
return;
}
ViewRequest view_request;
ParseError error;
if (!ParseJingleViewRequest(action_elem, &view_request, &error)) {
LOG(LS_WARNING) << "Failed to parse view request: " << error.text;
return;
}
VideoChannel* video_channel = GetVideoChannel(session);
if (video_channel == NULL) {
LOG(LS_WARNING) << "Ignore view request since we have no video channel.";
return;
}
if (!video_channel->ApplyViewRequest(view_request)) {
LOG(LS_WARNING) << "Failed to ApplyViewRequest.";
}
}
void Call::OnRemoteDescriptionUpdate(BaseSession* base_session,
const ContentInfos& updated_contents) {
Session* session = static_cast<Session*>(base_session);
const ContentInfo* audio_content = GetFirstAudioContent(updated_contents);
if (audio_content) {
const AudioContentDescription* audio_update =
static_cast<const AudioContentDescription*>(audio_content->description);
if (!audio_update->codecs().empty()) {
UpdateVoiceChannelRemoteContent(session, audio_update);
}
}
const ContentInfo* video_content = GetFirstVideoContent(updated_contents);
if (video_content) {
const VideoContentDescription* video_update =
static_cast<const VideoContentDescription*>(video_content->description);
if (!video_update->codecs().empty()) {
UpdateVideoChannelRemoteContent(session, video_update);
}
}
const ContentInfo* data_content = GetFirstDataContent(updated_contents);
if (data_content) {
const DataContentDescription* data_update =
static_cast<const DataContentDescription*>(data_content->description);
if (!data_update->codecs().empty()) {
UpdateDataChannelRemoteContent(session, data_update);
}
}
UpdateRemoteMediaStreams(session, updated_contents, true);
}
bool Call::UpdateVoiceChannelRemoteContent(
Session* session, const AudioContentDescription* audio) {
VoiceChannel* voice_channel = GetVoiceChannel(session);
if (!voice_channel->SetRemoteContent(audio, CA_UPDATE, NULL)) {
const std::string error_desc =
"Failure in audio SetRemoteContent with CA_UPDATE";
LOG(LS_ERROR) << error_desc;
session->SetError(BaseSession::ERROR_CONTENT, error_desc);
return false;
}
return true;
}
bool Call::UpdateVideoChannelRemoteContent(
Session* session, const VideoContentDescription* video) {
VideoChannel* video_channel = GetVideoChannel(session);
if (!video_channel->SetRemoteContent(video, CA_UPDATE, NULL)) {
const std::string error_desc =
"Failure in video SetRemoteContent with CA_UPDATE";
LOG(LS_ERROR) << error_desc;
session->SetError(BaseSession::ERROR_CONTENT, error_desc);
return false;
}
return true;
}
bool Call::UpdateDataChannelRemoteContent(
Session* session, const DataContentDescription* data) {
DataChannel* data_channel = GetDataChannel(session);
if (!data_channel->SetRemoteContent(data, CA_UPDATE, NULL)) {
const std::string error_desc =
"Failure in data SetRemoteContent with CA_UPDATE";
LOG(LS_ERROR) << error_desc;
session->SetError(BaseSession::ERROR_CONTENT, error_desc);
return false;
}
return true;
}
void Call::UpdateRemoteMediaStreams(Session* session,
const ContentInfos& updated_contents,
bool update_channels) {
MediaStreams* recv_streams = GetMediaStreams(session);
if (!recv_streams)
return;
cricket::MediaStreams added_streams;
cricket::MediaStreams removed_streams;
const ContentInfo* audio_content = GetFirstAudioContent(updated_contents);
if (audio_content) {
const AudioContentDescription* audio_update =
static_cast<const AudioContentDescription*>(audio_content->description);
UpdateRecvStreams(audio_update->streams(),
update_channels ? GetVoiceChannel(session) : NULL,
recv_streams->mutable_audio(),
added_streams.mutable_audio(),
removed_streams.mutable_audio());
}
const ContentInfo* video_content = GetFirstVideoContent(updated_contents);
if (video_content) {
const VideoContentDescription* video_update =
static_cast<const VideoContentDescription*>(video_content->description);
UpdateRecvStreams(video_update->streams(),
update_channels ? GetVideoChannel(session) : NULL,
recv_streams->mutable_video(),
added_streams.mutable_video(),
removed_streams.mutable_video());
}
const ContentInfo* data_content = GetFirstDataContent(updated_contents);
if (data_content) {
const DataContentDescription* data_update =
static_cast<const DataContentDescription*>(data_content->description);
UpdateRecvStreams(data_update->streams(),
update_channels ? GetDataChannel(session) : NULL,
recv_streams->mutable_data(),
added_streams.mutable_data(),
removed_streams.mutable_data());
}
if (!added_streams.empty() || !removed_streams.empty()) {
SignalMediaStreamsUpdate(this, session, added_streams, removed_streams);
}
}
void FindStreamChanges(const std::vector<StreamParams>& streams,
const std::vector<StreamParams>& updates,
std::vector<StreamParams>* added_streams,
std::vector<StreamParams>* removed_streams) {
for (std::vector<StreamParams>::const_iterator update = updates.begin();
update != updates.end(); ++update) {
StreamParams stream;
if (GetStreamByIds(streams, update->groupid, update->id, &stream)) {
if (!update->has_ssrcs()) {
removed_streams->push_back(stream);
}
} else {
// There's a bug on reflector that will send <stream>s even
// though there is not ssrc (which means there isn't really a
// stream). To work around it, we simply ignore new <stream>s
// that don't have any ssrcs.
if (update->has_ssrcs()) {
added_streams->push_back(*update);
}
}
}
}
void Call::UpdateRecvStreams(const std::vector<StreamParams>& update_streams,
BaseChannel* channel,
std::vector<StreamParams>* recv_streams,
std::vector<StreamParams>* added_streams,
std::vector<StreamParams>* removed_streams) {
FindStreamChanges(*recv_streams,
update_streams, added_streams, removed_streams);
AddRecvStreams(*added_streams,
channel, recv_streams);
RemoveRecvStreams(*removed_streams,
channel, recv_streams);
}
void Call::AddRecvStreams(const std::vector<StreamParams>& added_streams,
BaseChannel* channel,
std::vector<StreamParams>* recv_streams) {
std::vector<StreamParams>::const_iterator stream;
for (stream = added_streams.begin();
stream != added_streams.end();
++stream) {
AddRecvStream(*stream, channel, recv_streams);
}
}
void Call::AddRecvStream(const StreamParams& stream,
BaseChannel* channel,
std::vector<StreamParams>* recv_streams) {
if (channel && stream.has_ssrcs()) {
channel->AddRecvStream(stream);
}
recv_streams->push_back(stream);
}
void Call::RemoveRecvStreams(const std::vector<StreamParams>& removed_streams,
BaseChannel* channel,
std::vector<StreamParams>* recv_streams) {
std::vector<StreamParams>::const_iterator stream;
for (stream = removed_streams.begin();
stream != removed_streams.end();
++stream) {
RemoveRecvStream(*stream, channel, recv_streams);
}
}
void Call::RemoveRecvStream(const StreamParams& stream,
BaseChannel* channel,
std::vector<StreamParams>* recv_streams) {
if (channel && stream.has_ssrcs()) {
// TODO(pthatcher): Change RemoveRecvStream to take a stream argument.
channel->RemoveRecvStream(stream.first_ssrc());
}
RemoveStreamByIds(recv_streams, stream.groupid, stream.id);
}
void Call::OnReceivedTerminateReason(Session* session,
const std::string& reason) {
session_client_->session_manager()->signaling_thread()->Clear(this,
MSG_TERMINATECALL);
SignalReceivedTerminateReason(this, session, reason);
}
// TODO(mdodd): Get ride of this method since all Hangouts are using a secure
// connection.
bool Call::secure() const {
if (session_client_->secure() == SEC_DISABLED) {
return false;
}
bool ret = true;
int i = 0;
MediaSessionMap::const_iterator it;
for (it = media_session_map_.begin(); it != media_session_map_.end(); ++it) {
LOG_F(LS_VERBOSE) << "session[" << i
<< "], check local and remote descriptions";
i++;
if (!SessionDescriptionContainsCrypto(
it->second.session->local_description()) ||
!SessionDescriptionContainsCrypto(
it->second.session->remote_description())) {
ret = false;
break;
}
}
LOG_F(LS_VERBOSE) << "secure=" << ret;
return ret;
}
bool Call::SessionDescriptionContainsCrypto(
const SessionDescription* sdesc) const {
if (sdesc == NULL) {
LOG_F(LS_VERBOSE) << "sessionDescription is NULL";
return false;
}
return ContentContainsCrypto(sdesc->GetContentByName(CN_AUDIO)) &&
ContentContainsCrypto(sdesc->GetContentByName(CN_VIDEO));
}
Session* Call::InternalInitiateSession(const std::string& id,
const buzz::Jid& to,
const std::string& initiator_name,
const CallOptions& options) {
const SessionDescription* offer = session_client_->CreateOffer(options);
Session* session = session_client_->CreateSession(id, this);
// Only override the initiator_name if it was manually supplied. Otherwise,
// session_client_ will supply the local jid as initiator in CreateOffer.
if (!initiator_name.empty()) {
session->set_initiator_name(initiator_name);
}
AddSession(session, offer);
session->Initiate(to.Str(), offer);
// After this timeout, terminate the call because the callee isn't
// answering
session_client_->session_manager()->signaling_thread()->Clear(this,
MSG_TERMINATECALL);
session_client_->session_manager()->signaling_thread()->PostDelayed(
send_to_voicemail_ ? kSendToVoicemailTimeout : kNoVoicemailTimeout,
this, MSG_TERMINATECALL);
return session;
}
AudioSourceProxy* Call::GetAudioSourceProxy() {
return audio_source_proxy_.get();
}
} // namespace cricket
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