Non-constraint interfaces for all constrainable interfaces

webrtc/api/peerconnection.cc

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 409 matching lines @@
     if (stream->AddTrack(track)) {
       return track;
     }
     return nullptr;
   }
 
   rtc::Thread* signaling_thread_;
   rtc::Thread* worker_thread_;
 };
 
-bool ConvertRtcOptionsForOffer(
+bool ExtractMediaSessionOptions(
     const PeerConnectionInterface::RTCOfferAnswerOptions& rtc_options,
     cricket::MediaSessionOptions* session_options) {
   typedef PeerConnectionInterface::RTCOfferAnswerOptions RTCOfferAnswerOptions;
   if (!IsValidOfferToReceiveMedia(rtc_options.offer_to_receive_audio) ||
       !IsValidOfferToReceiveMedia(rtc_options.offer_to_receive_video)) {
     return false;
   }
 
   if (rtc_options.offer_to_receive_audio != RTCOfferAnswerOptions::kUndefined) {
     session_options->recv_audio = (rtc_options.offer_to_receive_audio > 0);
@@ skipping 117 matching lines @@
   // since it's about to be destroyed.
   for (const auto& sender : senders_) {
     sender->Stop();
   }
   for (const auto& receiver : receivers_) {
     receiver->Stop();
   }
 }
 
 bool PeerConnection::Initialize(
+    const cricket::MediaConfig& media_config,
     const PeerConnectionInterface::RTCConfiguration& configuration,
-    const MediaConstraintsInterface* constraints,
     rtc::scoped_ptr<cricket::PortAllocator> allocator,
     rtc::scoped_ptr<DtlsIdentityStoreInterface> dtls_identity_store,
     PeerConnectionObserver* observer) {
   TRACE_EVENT0("webrtc", "PeerConnection::Initialize");
   RTC_DCHECK(observer != nullptr);
   if (!observer) {
     return false;
   }
   observer_ = observer;
 
   port_allocator_ = std::move(allocator);
 
   cricket::ServerAddresses stun_servers;
   std::vector<cricket::RelayServerConfig> turn_servers;
   if (!ParseIceServers(configuration.servers, &stun_servers, &turn_servers)) {
     return false;
   }
   port_allocator_->SetIceServers(stun_servers, turn_servers);
 
   // To handle both internal and externally created port allocator, we will
   // enable BUNDLE here.
   int portallocator_flags = port_allocator_->flags();
   portallocator_flags |= cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
                          cricket::PORTALLOCATOR_ENABLE_IPV6;
-  bool value;
-  // If IPv6 flag was specified, we'll not override it by experiment.
-  if (FindConstraint(constraints, MediaConstraintsInterface::kEnableIPv6,
-                     &value, nullptr)) {
-    if (!value) {
-      portallocator_flags &= ~(cricket::PORTALLOCATOR_ENABLE_IPV6);
-    }
+  // If the disable-IPv6 flag was specified, we'll not override it
+  // by experiment.
+  if (configuration.disable_ipv6) {
+    portallocator_flags &= ~(cricket::PORTALLOCATOR_ENABLE_IPV6);
   } else if (webrtc::field_trial::FindFullName("WebRTC-IPv6Default") ==
              "Disabled") {
     portallocator_flags &= ~(cricket::PORTALLOCATOR_ENABLE_IPV6);
   }
 
   if (configuration.tcp_candidate_policy == kTcpCandidatePolicyDisabled) {
     portallocator_flags |= cricket::PORTALLOCATOR_DISABLE_TCP;
     LOG(LS_INFO) << "TCP candidates are disabled.";
   }
 
   port_allocator_->set_flags(portallocator_flags);
   // No step delay is used while allocating ports.
   port_allocator_->set_step_delay(cricket::kMinimumStepDelay);
 
-  // We rely on default values when constraints aren't found.
-  cricket::MediaConfig media_config;
-
-  media_config.video.disable_prerenderer_smoothing =
-      configuration.disable_prerenderer_smoothing;
-
-  // Find DSCP constraint.
-  FindConstraint(constraints, MediaConstraintsInterface::kEnableDscp,
-                 &media_config.enable_dscp, NULL);
-  // Find constraint for cpu overuse detection.
-  FindConstraint(constraints, MediaConstraintsInterface::kCpuOveruseDetection,
-                 &media_config.video.enable_cpu_overuse_detection, NULL);
-
-  // Find Suspend Below Min Bitrate constraint.
-  FindConstraint(constraints,
-                 MediaConstraintsInterface::kEnableVideoSuspendBelowMinBitrate,
-                 &media_config.video.suspend_below_min_bitrate, NULL);
-
   media_controller_.reset(factory_->CreateMediaController(media_config));
 
   remote_stream_factory_.reset(new RemoteMediaStreamFactory(
       factory_->signaling_thread(), factory_->worker_thread()));
 
   session_.reset(
       new WebRtcSession(media_controller_.get(), factory_->signaling_thread(),
                         factory_->worker_thread(), port_allocator_.get()));
   stats_.reset(new StatsCollector(this));
 
   // Initialize the WebRtcSession. It creates transport channels etc.
-  if (!session_->Initialize(factory_->options(), constraints,
-                            std::move(dtls_identity_store), configuration)) {
+  if (!session_->Initialize(factory_->options(), std::move(dtls_identity_store),
+                            configuration)) {
     return false;
   }
 
   // Register PeerConnection as receiver of local ice candidates.
   // All the callbacks will be posted to the application from PeerConnection.
   session_->RegisterIceObserver(this);
   session_->SignalState.connect(this, &PeerConnection::OnSessionStateChange);
   session_->SignalVoiceChannelDestroyed.connect(
       this, &PeerConnection::OnVoiceChannelDestroyed);
   session_->SignalVideoChannelDestroyed.connect(
@@ skipping 343 matching lines @@
   }
 
   cricket::MediaSessionOptions session_options;
   if (!GetOptionsForAnswer(constraints, &session_options)) {
     std::string error = "CreateAnswer called with invalid constraints.";
     LOG(LS_ERROR) << error;
     PostCreateSessionDescriptionFailure(observer, error);
     return;
   }
 
-  session_->CreateAnswer(observer, constraints, session_options);
+  session_->CreateAnswer(observer, session_options);
+}
+
+void PeerConnection::CreateAnswer(CreateSessionDescriptionObserver* observer,
+                                  const RTCOfferAnswerOptions& options) {
+  TRACE_EVENT0("webrtc", "PeerConnection::CreateAnswer");
+  if (!VERIFY(observer != nullptr)) {
+    LOG(LS_ERROR) << "CreateAnswer - observer is NULL.";
+    return;
+  }
+
+  cricket::MediaSessionOptions session_options;
+  if (!GetOptionsForAnswer(options, &session_options)) {
+    std::string error = "CreateAnswer called with invalid options.";
+    LOG(LS_ERROR) << error;
+    PostCreateSessionDescriptionFailure(observer, error);
+    return;
+  }
+
+  session_->CreateAnswer(observer, session_options);
 }
 
 void PeerConnection::SetLocalDescription(
     SetSessionDescriptionObserver* observer,
     SessionDescriptionInterface* desc) {
   TRACE_EVENT0("webrtc", "PeerConnection::SetLocalDescription");
   if (!VERIFY(observer != nullptr)) {
     LOG(LS_ERROR) << "SetLocalDescription - observer is NULL.";
     return;
   }
@@ skipping 483 matching lines @@
     cricket::MediaSessionOptions* session_options) {
   // TODO(deadbeef): Once we have transceivers, enumerate them here instead of
   // ContentInfos.
   if (session_->local_description()) {
     for (const cricket::ContentInfo& content :
          session_->local_description()->description()->contents()) {
       session_options->transport_options[content.name] =
           cricket::TransportOptions();
     }
   }
-  if (!ConvertRtcOptionsForOffer(rtc_options, session_options)) {
+  if (!ExtractMediaSessionOptions(rtc_options, session_options)) {
     return false;
   }
 
   AddSendStreams(session_options, senders_, rtp_data_channels_);
   // Offer to receive audio/video if the constraint is not set and there are
   // send streams, or we're currently receiving.
   if (rtc_options.offer_to_receive_audio == RTCOfferAnswerOptions::kUndefined) {
     session_options->recv_audio =
         session_options->HasSendMediaStream(cricket::MEDIA_TYPE_AUDIO) ||
         !remote_audio_tracks_.empty();
   }
   if (rtc_options.offer_to_receive_video == RTCOfferAnswerOptions::kUndefined) {
     session_options->recv_video =
         session_options->HasSendMediaStream(cricket::MEDIA_TYPE_VIDEO) ||
         !remote_video_tracks_.empty();
   }
   session_options->bundle_enabled =
       session_options->bundle_enabled &&
       (session_options->has_audio() || session_options->has_video() ||
        session_options->has_data());
 
   if (session_->data_channel_type() == cricket::DCT_SCTP && HasDataChannels()) {
     session_options->data_channel_type = cricket::DCT_SCTP;
   }
   return true;
 }
 
-bool PeerConnection::GetOptionsForAnswer(
-    const MediaConstraintsInterface* constraints,
+void PeerConnection::FinishOptionsForAnswer(
     cricket::MediaSessionOptions* session_options) {
-  session_options->recv_audio = false;
-  session_options->recv_video = false;
   // TODO(deadbeef): Once we have transceivers, enumerate them here instead of
   // ContentInfos.
   if (session_->remote_description()) {
     // Initialize the transport_options map.
     for (const cricket::ContentInfo& content :
          session_->remote_description()->description()->contents()) {
       session_options->transport_options[content.name] =
           cricket::TransportOptions();
     }
   }
-  if (!ParseConstraintsForAnswer(constraints, session_options)) {
-    return false;
-  }
-
   AddSendStreams(session_options, senders_, rtp_data_channels_);
   session_options->bundle_enabled =
       session_options->bundle_enabled &&
       (session_options->has_audio() || session_options->has_video() ||
        session_options->has_data());
 
   // RTP data channel is handled in MediaSessionOptions::AddStream. SCTP streams
   // are not signaled in the SDP so does not go through that path and must be
   // handled here.
   if (session_->data_channel_type() == cricket::DCT_SCTP) {
     session_options->data_channel_type = cricket::DCT_SCTP;
   }
+}
+
+bool PeerConnection::GetOptionsForAnswer(
+    const MediaConstraintsInterface* constraints,
+    cricket::MediaSessionOptions* session_options) {
+  session_options->recv_audio = false;
+  session_options->recv_video = false;
+  if (!ParseConstraintsForAnswer(constraints, session_options)) {
+    return false;
+  }
+  FinishOptionsForAnswer(session_options);
   return true;
 }
 
+bool PeerConnection::GetOptionsForAnswer(
+    const RTCOfferAnswerOptions& options,
+    cricket::MediaSessionOptions* session_options) {
+  session_options->recv_audio = false;
+  session_options->recv_video = false;
+  if (!ExtractMediaSessionOptions(options, session_options)) {
+    return false;
+  }
+  FinishOptionsForAnswer(session_options);
+  return true;
+}
+
 void PeerConnection::RemoveTracks(cricket::MediaType media_type) {
   UpdateLocalTracks(std::vector<cricket::StreamParams>(), media_type);
   UpdateRemoteStreamsList(std::vector<cricket::StreamParams>(), false,
                           media_type, nullptr);
 }
 
 void PeerConnection::UpdateRemoteStreamsList(
     const cricket::StreamParamsVec& streams,
     bool default_track_needed,
     cricket::MediaType media_type,
@@ skipping 513 matching lines @@
 DataChannel* PeerConnection::FindDataChannelBySid(int sid) const {
   for (const auto& channel : sctp_data_channels_) {
     if (channel->id() == sid) {
       return channel;
     }
   }
   return nullptr;
 }
 
 }  // namespace webrtc