Update VP8 encode options to speed up encoding for remoting

remoting/base/encoder_vp8.cc

Index: remoting/base/encoder_vp8.cc
diff --git a/remoting/base/encoder_vp8.cc b/remoting/base/encoder_vp8.cc
index 0bba179a97cd397ef3b6002163ea013053fcf0f2..c21c33d43e78340cf3654b30bfdcb4ed640459df 100644
--- a/remoting/base/encoder_vp8.cc
+++ b/remoting/base/encoder_vp8.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+B1;2305;0c// Copyright (c) 2011 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.
 
@@ -99,14 +99,13 @@ bool EncoderVp8::Init(const gfx::Size& size) {
   active_map_height_ = (size.height() + kMacroBlockSize - 1) / kMacroBlockSize;
   active_map_.reset(new uint8[active_map_width_ * active_map_height_]);
 
-  // TODO(hclam): Tune the parameters to better suit the application.
   config.rc_target_bitrate = size.width() * size.height() *
       config.rc_target_bitrate / config.g_w / config.g_h;
   config.g_w = size.width();
   config.g_h = size.height();
   config.g_pass = VPX_RC_ONE_PASS;
-  config.g_profile = 1;
-  config.g_threads = 1;
+  config.g_profile = 2;
+  config.g_threads = 2;
   config.rc_min_quantizer = 20;
   config.rc_max_quantizer = 30;
   config.g_timebase.num = 1;
@@ -114,6 +113,10 @@ bool EncoderVp8::Init(const gfx::Size& size) {
 
   if (vpx_codec_enc_init(codec_.get(), algo, &config, 0))
     return false;
+  if (vpx_codec_control(codec_.get(), VP8E_SET_CPUUSED, 16))

[dmac, 2011/05/28 00:16:33]

Can we put some comments here as to why these values were chosen? (in both
cases).

+    return false;
+  if (vpx_codec_control(codec_.get(), VP8E_SET_NOISE_SENSITIVITY, 0))
+    return false;
   return true;
 }