Introduce AudioHardwareConfig for renderer side audio device info.

content/renderer/media/webrtc_audio_renderer.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_renderer.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "content/renderer/media/audio_device_factory.h"
-#include "content/renderer/media/audio_hardware.h"
+#include "content/renderer/media/renderer_audio_hardware_config.h"
 #include "content/renderer/media/renderer_audio_output_device.h"
 #include "content/renderer/media/webrtc_audio_device_impl.h"
+#include "content/renderer/render_thread_impl.h"
 #include "media/audio/audio_util.h"
 #include "media/audio/sample_rates.h"
+
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #include "media/audio/win/core_audio_util_win.h"
 #endif
 
 namespace content {
 
 namespace {
 
 // Supported hardware sample rates for output sides.
 #if defined(OS_WIN) || defined(OS_MACOSX)
-// media::GetAudioOutputHardwareSampleRate() asks the audio layer
+// RendererAudioHardwareConfig::GetOutputSampleRate() 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 Initialize()
 // will fail if the user selects any rate outside these ranges.
 int kValidOutputRates[] = {96000, 48000, 44100};
 #elif defined(OS_LINUX) || defined(OS_OPENBSD)
 int kValidOutputRates[] = {48000, 44100};
 #elif defined(OS_ANDROID)
 // On Android, the most popular sampling rate is 16000.
 int kValidOutputRates[] = {48000, 44100, 16000};
 #else
@@ skipping 60 matching lines @@
   base::AutoLock auto_lock(lock_);
   DCHECK_EQ(state_, UNINITIALIZED);
   DCHECK(source);
   DCHECK(!sink_);
   DCHECK(!source_);
 
   sink_ = AudioDeviceFactory::NewOutputDevice();
   DCHECK(sink_);
 
   // Ask the browser for the default audio output hardware sample-rate.
   // This request is based on a synchronous IPC message.

[henrika (OOO until Aug 14), 2013/01/29 10:46:49]

Guess this comment is not 100% any longer since we can't say for sure that the
all will render an IPC message.

[DaleCurtis, 2013/01/30 01:31:06]

Done.

-  int sample_rate = GetAudioOutputSampleRate();
+  RendererAudioHardwareConfig* hardware_config =
+      RenderThreadImpl::current()->GetAudioHardwareConfig();
+  int sample_rate = hardware_config->GetOutputSampleRate();
   DVLOG(1) << "Audio output hardware sample rate: " << sample_rate;
   UMA_HISTOGRAM_ENUMERATION("WebRTC.AudioOutputSampleRate",
                             sample_rate, media::kUnexpectedAudioSampleRate);
 
   // Verify that the reported output hardware sample rate is supported
   // on the current platform.
   if (std::find(&kValidOutputRates[0],
                 &kValidOutputRates[0] + arraysize(kValidOutputRates),
                 sample_rate) ==
                     &kValidOutputRates[arraysize(kValidOutputRates)]) {
@@ skipping 177 matching lines @@
                              params_.bits_per_sample() / 8);
   return audio_bus->frames();
 }
 
 void WebRtcAudioRenderer::OnRenderError() {
   NOTIMPLEMENTED();
   LOG(ERROR) << "OnRenderError()";
 }
 
 }  // namespace content