Adds 192kHz support for WebRTC capturing

content/renderer/media/webrtc_audio_capturer.cc

 // Copyright (c) 2012 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 "content/renderer/media/webrtc_audio_capturer.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
@@ skipping 10 matching lines @@
 namespace content {
 
 namespace {
 
 // Supported hardware sample rates for input and output sides.
 #if defined(OS_WIN) || defined(OS_MACOSX)
 // media::GetAudioInputHardwareSampleRate() asks the audio layer
 // for its current sample rate (set by the user) on Windows and Mac OS X.
 // The listed rates below adds restrictions and WebRtcAudioDeviceImpl::Init()
 // will fail if the user selects any rate outside these ranges.
-const int kValidInputRates[] = {96000, 48000, 44100, 32000, 16000, 8000};
+const int kValidInputRates[] =
+    {192000, 96000, 48000, 44100, 32000, 16000, 8000};
 #elif defined(OS_LINUX) || defined(OS_OPENBSD)
 const int kValidInputRates[] = {48000, 44100};

[no longer working on chromium, 2014/04/03 14:12:39]

can we make {192000, 96000, 48000, 44100, 32000, 16000, 8000} as the default
valid sample rates we support on all desktops?

 #elif defined(OS_ANDROID)
 const int kValidInputRates[] = {48000, 44100};
 #else
 const int kValidInputRates[] = {44100};
 #endif
 
 }  // namespace
 
 // Reference counted container of WebRtcLocalAudioTrack delegate.
 // TODO(xians): Switch to MediaStreamAudioSinkOwner.
@@ skipping 536 matching lines @@
   DCHECK_NE(aec_dump_file, base::kInvalidPlatformFileValue);
   audio_processor_->StartAecDump(aec_dump_file);
 }
 
 void WebRtcAudioCapturer::StopAecDump() {
   DCHECK(thread_checker_.CalledOnValidThread());
   audio_processor_->StopAecDump();
 }
 
 }  // namespace content