Add recording capability to AudioManager, and implemented on windows using the WaveIn APIs.

media/audio/win/audio_manager_win.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2010 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_AUDIO_AUDIO_MANAGER_WIN_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_WIN_H_
 
 #include <windows.h>
 
 #include "base/basictypes.h"
 #include "media/audio/audio_io.h"
 
+class PCMWaveInAudioInputStream;
 class PCMWaveOutAudioOutputStream;
 
 // Windows implementation of the AudioManager singleton. This class is internal
 // to the audio output and only internal users can call methods not exposed by
 // the AudioManager class.
 class AudioManagerWin : public AudioManager {
  public:
   AudioManagerWin() {}
   // Implementation of AudioManager.
   virtual bool HasAudioOutputDevices();
+  virtual bool HasAudioInputDevices();
   virtual AudioOutputStream* MakeAudioOutputStream(Format format, int channels,
                                                    int sample_rate,
                                                    char bits_per_sample);
+  virtual AudioInputStream* MakeAudioInputStream(Format format, int channels,
+                                                 int sample_rate,
+                                                 char bits_per_sample,
+                                                 uint32 samples_per_packet);
   virtual void MuteAll();
   virtual void UnMuteAll();
 
   // Windows-only methods to free a stream created in MakeAudioStream. These
   // are called internally by the audio stream when it has been closed.
   void ReleaseOutputStream(PCMWaveOutAudioOutputStream* stream);
 
+  // Called internally by the audio stream when it has been closed.
+  void ReleaseInputStream(PCMWaveInAudioInputStream* stream);
+
  private:
   friend void DestroyAudioManagerWin(void *);
   virtual ~AudioManagerWin();
   DISALLOW_COPY_AND_ASSIGN(AudioManagerWin);
 };
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_WIN_H_