[Cast] Compute utilization metrics and add performance overlay.

media/cast/sender/fake_software_video_encoder.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/fake_software_video_encoder.h"
 
 #include "base/json/json_writer.h"
 #include "base/values.h"
 #include "media/base/video_frame.h"
-#include "media/cast/net/cast_transport_config.h"
 
 #ifndef OFFICIAL_BUILD
 
 namespace media {
 namespace cast {
 
 FakeSoftwareVideoEncoder::FakeSoftwareVideoEncoder(
     const VideoSenderConfig& video_config)
     : video_config_(video_config),
       next_frame_is_key_(true),
       frame_id_(0),
       frame_id_to_reference_(0),
       frame_size_(0) {
 }
 
 FakeSoftwareVideoEncoder::~FakeSoftwareVideoEncoder() {}
 
 void FakeSoftwareVideoEncoder::Initialize() {}
 
 void FakeSoftwareVideoEncoder::Encode(
     const scoped_refptr<media::VideoFrame>& video_frame,
     const base::TimeTicks& reference_time,
-    EncodedFrame* encoded_frame) {
+    SenderEncodedFrame* encoded_frame) {
   DCHECK(encoded_frame);
 
   if (video_frame->visible_rect().size() != last_frame_size_) {
     next_frame_is_key_ = true;
     last_frame_size_ = video_frame->visible_rect().size();
   }
 
   encoded_frame->frame_id = frame_id_++;
   if (next_frame_is_key_) {
     encoded_frame->dependency = EncodedFrame::KEY;
     encoded_frame->referenced_frame_id = encoded_frame->frame_id;
     next_frame_is_key_ = false;
   } else {
     encoded_frame->dependency = EncodedFrame::DEPENDENT;
     encoded_frame->referenced_frame_id = encoded_frame->frame_id - 1;
   }
   encoded_frame->rtp_timestamp =
       TimeDeltaToRtpDelta(video_frame->timestamp(), kVideoFrequency);
   encoded_frame->reference_time = reference_time;
 
   base::DictionaryValue values;
   values.SetBoolean("key",
                     encoded_frame->dependency == EncodedFrame::KEY);
   values.SetInteger("ref", encoded_frame->referenced_frame_id);
   values.SetInteger("id", encoded_frame->frame_id);
   values.SetInteger("size", frame_size_);
   base::JSONWriter::Write(values, &encoded_frame->data);
   encoded_frame->data.resize(
       std::max<size_t>(encoded_frame->data.size(), frame_size_), ' ');
+
+  if (encoded_frame->dependency == EncodedFrame::KEY) {
+    encoded_frame->deadline_utilization = 1.0;
+    encoded_frame->lossy_utilization = 6.0;
+  } else {
+    encoded_frame->deadline_utilization = 0.8;
+    encoded_frame->lossy_utilization = 0.8;
+  }
 }
 
 void FakeSoftwareVideoEncoder::UpdateRates(uint32 new_bitrate) {
   frame_size_ = new_bitrate / video_config_.max_frame_rate / 8;
 }
 
 void FakeSoftwareVideoEncoder::GenerateKeyFrame() {
   next_frame_is_key_ = true;
 }
 
 void FakeSoftwareVideoEncoder::LatestFrameIdToReference(uint32 frame_id) {
   frame_id_to_reference_ = frame_id;
 }
 
 }  // namespace cast
 }  // namespace media
 
 #endif