Reland 15721002: Hook up the device selection to the WebAudio live audio

media/audio/win/audio_unified_win.h

 // 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.
 
 #ifndef MEDIA_AUDIO_WIN_AUDIO_UNIFIED_WIN_H_
 #define MEDIA_AUDIO_WIN_AUDIO_UNIFIED_WIN_H_
 
 #include <Audioclient.h>
 #include <MMDeviceAPI.h>
 
@@ skipping 66 matching lines @@
 //    as internal sample-value representation.
 //  - Perform fine-tuning for non-matching sample rates to reduce latency.
 //
 class MEDIA_EXPORT WASAPIUnifiedStream
     : public AudioOutputStream,
       public base::DelegateSimpleThread::Delegate {
  public:
   // The ctor takes all the usual parameters, plus |manager| which is the
   // the audio manager who is creating this object.
   WASAPIUnifiedStream(AudioManagerWin* manager,
-                      const AudioParameters& params);
+                      const AudioParameters& params,
+                      const std::string& input_device_id);
 
   // The dtor is typically called by the AudioManager only and it is usually
   // triggered by calling AudioOutputStream::Close().
   virtual ~WASAPIUnifiedStream();
 
   // Implementation of AudioOutputStream.
   virtual bool Open() OVERRIDE;
   virtual void Start(AudioSourceCallback* callback) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void Close() OVERRIDE;
@@ skipping 78 matching lines @@
 
   // Our creator, the audio manager needs to be notified when we close.
   AudioManagerWin* manager_;
 
   // Contains the audio parameter structure provided at construction.
   AudioParameters params_;
   // For convenience, same as in params_.
   int input_channels_;
   int output_channels_;
 
+  // Unique ID of the input device to be opened.
+  const std::string input_device_id_;
+
   // The sharing mode for the streams.
   // Valid values are AUDCLNT_SHAREMODE_SHARED and AUDCLNT_SHAREMODE_EXCLUSIVE
   // where AUDCLNT_SHAREMODE_SHARED is the default.
   AUDCLNT_SHAREMODE share_mode_;
 
   // Rendering and capturing is driven by this thread (no message loop).
   // All OnMoreIOData() callbacks will be called from this thread.
   scoped_ptr<base::DelegateSimpleThread> audio_io_thread_;
 
   // Contains the desired audio output format which is set up at construction.
@@ skipping 143 matching lines @@
   FILE* data_file_;
   FILE* param_file_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(WASAPIUnifiedStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_WIN_AUDIO_UNIFIED_WIN_H_