Switch OnMoreData() to use AudioBus.

media/audio/audio_input_device.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 "media/audio/audio_input_device.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time.h"
@@ skipping 17 matching lines @@
                       CaptureCallback* capture_callback);
   virtual ~AudioThreadCallback();
 
   virtual void MapSharedMemory() OVERRIDE;
 
   // Called whenever we receive notifications about pending data.
   virtual void Process(int pending_data) OVERRIDE;
 
  private:
   CaptureCallback* capture_callback_;
+  scoped_ptr<AudioBus> audio_bus_;
   DISALLOW_COPY_AND_ASSIGN(AudioThreadCallback);
 };
 
 AudioInputDevice::AudioInputDevice(
     AudioInputIPC* ipc,
     const scoped_refptr<base::MessageLoopProxy>& io_loop)
     : ScopedLoopObserver(io_loop),
       callback_(NULL),
       event_handler_(NULL),
       ipc_(ipc),
@@ skipping 252 matching lines @@
 }
 
 // AudioInputDevice::AudioThreadCallback
 AudioInputDevice::AudioThreadCallback::AudioThreadCallback(
     const AudioParameters& audio_parameters,
     base::SharedMemoryHandle memory,
     int memory_length,
     CaptureCallback* capture_callback)
     : AudioDeviceThread::Callback(audio_parameters, memory, memory_length),
       capture_callback_(capture_callback) {
+  audio_bus_ = AudioBus::Create(audio_parameters_);
 }
 
 AudioInputDevice::AudioThreadCallback::~AudioThreadCallback() {
 }
 
 void AudioInputDevice::AudioThreadCallback::MapSharedMemory() {
   shared_memory_.Map(memory_length_);
 }
 
 void AudioInputDevice::AudioThreadCallback::Process(int pending_data) {
@@ skipping 14 matching lines @@
   // with nominal range -1.0 -> +1.0.
   audio_bus_->FromInterleaved(memory, audio_bus_->frames(), bytes_per_sample);
 
   // Deliver captured data to the client in floating point format
   // and update the audio-delay measurement.
   capture_callback_->Capture(audio_bus_.get(),
                              audio_delay_milliseconds, volume);
 }
 
 }  // namespace media