Adding CastRemotingSender for media remoting.

chrome/renderer/media/cast_session_delegate.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/media/cast_session_delegate.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/callback_helpers.h"
@@ skipping 136 matching lines @@
   video_frame_input_available_callback_ = callback;
 
   cast_sender_->InitializeVideo(
       config,
       base::Bind(&CastSessionDelegate::OnOperationalStatusChange,
                  weak_factory_.GetWeakPtr(), false, error_callback),
       create_vea_cb,
       create_video_encode_mem_cb);
 }
 
+void CastSessionDelegate::StartRemotingStream(
+    int32_t stream_id,
+    const FrameSenderConfig& config,
+    const ErrorCallback& error_callback) {
+  DCHECK(io_task_runner_->BelongsToCurrentThread());
+
+  if (!cast_transport_) {
+    error_callback.Run("Destination not set.");
+    return;
+  }
+
+  media::cast::CastTransportRtpConfig transport_config;
+  transport_config.ssrc = config.sender_ssrc;
+  transport_config.feedback_ssrc = config.receiver_ssrc;
+  transport_config.rtp_payload_type = config.rtp_payload_type;
+  transport_config.rtp_stream_id = stream_id;
+  transport_config.aes_key = config.aes_key;
+  transport_config.aes_iv_mask = config.aes_iv_mask;
+  cast_transport_->InitializeStream(
+      transport_config, std::unique_ptr<media::cast::RtcpObserver>());

[dcheng, 2016/09/10 02:31:36]

Nit: nullptr as the second argument here.

[xjz, 2016/09/12 18:22:06]

Done.

+}
+
 void CastSessionDelegate::StartUDP(
     const net::IPEndPoint& local_endpoint,
     const net::IPEndPoint& remote_endpoint,
     std::unique_ptr<base::DictionaryValue> options,
     const ErrorCallback& error_callback) {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   CastSessionDelegateBase::StartUDP(local_endpoint, remote_endpoint,
                                     std::move(options), error_callback);
   event_subscribers_.reset(
       new media::cast::RawEventSubscriberBundle(cast_environment_));
@@ skipping 136 matching lines @@
       error_callback.Run(base::StringPrintf("%s codec runtime error.",
                                             is_for_audio ? "Audio" : "Video"));
       break;
   }
 }
 
 void CastSessionDelegate::ReceivePacket(
     std::unique_ptr<media::cast::Packet> packet) {
   // Do nothing (frees packet)
 }