Cast: Use 2 threads for encoding on capable systems

media/cast/cast_config.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 "media/cast/cast_config.h"
 
 namespace media {
 namespace cast {
 
 VideoSenderConfig::VideoSenderConfig()
     : sender_ssrc(0),
       incoming_feedback_ssrc(0),
       rtcp_interval(kDefaultRtcpIntervalMs),
       rtcp_mode(kRtcpReducedSize),
       use_external_encoder(false),
       width(0),
       height(0),
       congestion_control_back_off(kDefaultCongestionControlBackOff),
       max_qp(kDefaultMaxQp),
       min_qp(kDefaultMinQp),
       max_frame_rate(kDefaultMaxFrameRate),
-      max_number_of_video_buffers_used(kDefaultNumberOfVideoBuffers) {}
+      max_number_of_video_buffers_used(kDefaultNumberOfVideoBuffers),
+      number_of_encode_threads(1) {}
 
 AudioSenderConfig::AudioSenderConfig()
     : sender_ssrc(0),
       incoming_feedback_ssrc(0),
       rtcp_interval(kDefaultRtcpIntervalMs),
       rtcp_mode(kRtcpReducedSize),
       use_external_encoder(false),
       frequency(0),
       channels(0),
       bitrate(0) {}
@@ skipping 18 matching lines @@
       rtp_payload_type(0),
       use_external_decoder(false),
       max_frame_rate(kDefaultMaxFrameRate),
       decoder_faster_than_max_frame_rate(true) {}
 
 PcmAudioFrame::PcmAudioFrame() {}
 PcmAudioFrame::~PcmAudioFrame() {}
 
 }  // namespace cast
 }  // namespace media