Plumb frame rate configuration into Cast Streaming API.

media/cast/sender/video_sender.cc

 // Copyright 2014 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 "media/cast/sender/video_sender.h"
 
 #include <algorithm>
 #include <cstring>
 
 #include "base/bind.h"
@@ skipping 33 matching lines @@
       frames_in_encoder_(0),
       last_sent_frame_id_(0),
       latest_acked_frame_id_(0),
       duplicate_ack_counter_(0),
       congestion_control_(cast_environment->Clock(),
                           video_config.max_bitrate,
                           video_config.min_bitrate,
                           max_unacked_frames_),
       cast_initialization_status_(STATUS_VIDEO_UNINITIALIZED),
       weak_factory_(this) {
-  VLOG(1) << "max_unacked_frames " << max_unacked_frames_;
+  VLOG(1) << "max_unacked_frames is " << max_unacked_frames_
+          << " for target_playout_delay="
+          << target_playout_delay_.InMilliseconds() << " ms"
+          << " and max_frame_rate=" << video_config.max_frame_rate;
   DCHECK_GT(max_unacked_frames_, 0);
 
   if (video_config.use_external_encoder) {
     video_encoder_.reset(new ExternalVideoEncoder(cast_environment,
                                                   video_config,
                                                   create_vea_cb,
                                                   create_video_encode_mem_cb));
   } else {
     video_encoder_.reset(new VideoEncoderImpl(
         cast_environment, video_config, max_unacked_frames_));
@@ skipping 283 matching lines @@
   last_send_time_ = cast_environment_->Clock()->NowTicks();
 
   // Sending this extra packet is to kick-start the session. There is
   // no need to optimize re-transmission for this case.
   transport_sender_->ResendPackets(false, missing_frames_and_packets,
                                    false, rtt_);
 }
 
 }  // namespace cast
 }  // namespace media