Switch LiveAudio to source provider solution.

media/base/audio_hardware_config.h

 // Copyright (c) 2013 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.
 
 #ifndef MEDIA_BASE_AUDIO_HARDWARE_CONFIG_H_
 #define MEDIA_BASE_AUDIO_HARDWARE_CONFIG_H_
 
 #include "base/compiler_specific.h"
 #include "base/synchronization/lock.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/channel_layout.h"
 #include "media/base/media_export.h"
 
 namespace media {
 
 // Provides thread safe access to the audio hardware configuration.
 class MEDIA_EXPORT AudioHardwareConfig {
  public:
   AudioHardwareConfig(const media::AudioParameters& input_params,
                       const media::AudioParameters& output_params);
   virtual ~AudioHardwareConfig();
 
   // Accessors for the currently cached hardware configuration.  Safe to call
   // from any thread.
   int GetOutputBufferSize() const;
   int GetOutputSampleRate() const;
   ChannelLayout GetOutputChannelLayout() const;
   int GetOutputChannels() const;
 
+  int GetInputBufferSize() const;
   int GetInputSampleRate() const;
   ChannelLayout GetInputChannelLayout() const;
   int GetInputChannels() const;
 
   media::AudioParameters GetInputConfig() const;
   media::AudioParameters GetOutputConfig() const;
 
   // Allows callers to update the cached values for either input or output.  The
   // values are paired under the assumption that these values will only be set
   // after an input or output device change respectively.  Safe to call from
   // any thread.
   void UpdateInputConfig(const media::AudioParameters& input_params);
   void UpdateOutputConfig(const media::AudioParameters& output_params);
 
  private:
   // Cached values; access is protected by |config_lock_|.
   mutable base::Lock config_lock_;
   media::AudioParameters input_params_;
   media::AudioParameters output_params_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioHardwareConfig);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_HARDWARE_CONFIG_H_