Introduce AudioHardwareConfig for renderer side audio device info.

content/renderer/pepper/pepper_platform_audio_output_impl.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/pepper/pepper_platform_audio_output_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "build/build_config.h"
 #include "content/common/child_process.h"
 #include "content/common/media/audio_messages.h"
-#include "content/renderer/media/audio_hardware.h"
 #include "content/renderer/media/audio_message_filter.h"
 #include "content/renderer/render_thread_impl.h"
+#include "media/base/audio_hardware_config.h"
 #include "media/base/media_switches.h"
 
 namespace content {
 
 // static
 PepperPlatformAudioOutputImpl* PepperPlatformAudioOutputImpl::Create(
     int sample_rate,
     int frames_per_buffer,
     int source_render_view_id,
     webkit::ppapi::PluginDelegate::PlatformAudioOutputClient* client) {
@@ skipping 91 matching lines @@
     int sample_rate,
     int frames_per_buffer,
     int source_render_view_id,
     webkit::ppapi::PluginDelegate::PlatformAudioOutputClient* client) {
   DCHECK(client);
   client_ = client;
 
   media::AudioParameters::Format format;
   const int kMaxFramesForLowLatency = 2047;
 
+  media::AudioHardwareConfig* hardware_config =
+      RenderThreadImpl::current()->GetAudioHardwareConfig();
+
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   if (!cmd_line->HasSwitch(switches::kDisableAudioOutputResampler)) {
     // Rely on AudioOutputResampler to handle any inconsistencies between the
     // hardware params required for low latency and the requested params.
     format = media::AudioParameters::AUDIO_PCM_LOW_LATENCY;
-  } else if (sample_rate == GetAudioOutputSampleRate() &&
+  } else if (sample_rate == hardware_config->GetOutputSampleRate() &&
              frames_per_buffer <= kMaxFramesForLowLatency &&
-             frames_per_buffer % content::GetAudioOutputBufferSize() == 0) {
+             frames_per_buffer % hardware_config->GetOutputBufferSize() == 0) {
     // Use the low latency back end if the client request is compatible, and
     // the sample count is low enough to justify using AUDIO_PCM_LOW_LATENCY.
     format = media::AudioParameters::AUDIO_PCM_LOW_LATENCY;
   } else {
     format = media::AudioParameters::AUDIO_PCM_LINEAR;
   }
 
   media::AudioParameters params(format, media::CHANNEL_LAYOUT_STEREO,
                                 sample_rate, 16, frames_per_buffer);
 
@@ skipping 32 matching lines @@
 
   ipc_->CloseStream(stream_id_);
   ipc_->RemoveDelegate(stream_id_);
   stream_id_ = 0;
 
   Release();  // Release for the delegate, balances out the reference taken in
               // PepperPluginDelegateImpl::CreateAudio.
 }
 
 }  // namespace content