Cast: Use 2 threads for encoding on capable systems

media/cast/test/encode_decode_test.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.
 
 // Joint encoder and decoder testing.
 // These tests operate directly on the VP8 encoder and decoder, not the
 // transport layer, and are targeted at validating the bit stream.
 
 #include <gtest/gtest.h>
 #include <stdint.h>
@@ skipping 66 matching lines @@
         // video and main threads.
         cast_environment_(new CastEnvironment(
             scoped_ptr<base::TickClock>(testing_clock_).Pass(),
             task_runner_,
             NULL,
             task_runner_)),
         test_callback_(new EncodeDecodeTestFrameCallback()) {
     testing_clock_->Advance(
         base::TimeDelta::FromMilliseconds(kStartMillisecond));
     encoder_config_.max_number_of_video_buffers_used = 1;
-    encoder_config_.number_of_cores = 1;
     encoder_config_.width = kWidth;
     encoder_config_.height = kHeight;
     encoder_config_.start_bitrate = kStartbitrate;
     encoder_config_.min_qp = kMaxQp;
     encoder_config_.min_qp = kMinQp;
     encoder_config_.max_frame_rate = kMaxFrameRate;
     int max_unacked_frames = 1;
     encoder_.reset(new Vp8Encoder(encoder_config_, max_unacked_frames));
     // Initialize to use one core.
     decoder_.reset(new Vp8Decoder(cast_environment_));
@@ skipping 30 matching lines @@
   // Decode frame.
   decoder_->Decode(&encoded_frame,
                    base::TimeTicks(),
                    base::Bind(&EncodeDecodeTestFrameCallback::DecodeComplete,
                               test_callback_));
   task_runner_->RunTasks();
 }
 
 }  // namespace cast
 }  // namespace media