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

media/audio/pulse/pulse_unified.h

 // Copyright 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_AUDIO_PULSE_PULSE_UNIFIED_H_
 #define MEDIA_AUDIO_PULSE_PULSE_UNIFIED_H_
 
 #include <pulse/pulseaudio.h>
+#include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/audio_fifo.h"
 
 namespace media {
 
 class AudioManagerBase;
 class SeekableBuffer;
 
 class PulseAudioUnifiedStream : public AudioOutputStream {
  public:
   PulseAudioUnifiedStream(const AudioParameters& params,
+                          const std::string& input_device_id,
                           AudioManagerBase* manager);
 
   virtual ~PulseAudioUnifiedStream();
 
   // Implementation of PulseAudioUnifiedStream.
   virtual bool Open() OVERRIDE;
   virtual void Close() OVERRIDE;
   virtual void Start(AudioSourceCallback* callback) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void SetVolume(double volume) OVERRIDE;
@@ skipping 11 matching lines @@
   // Helpers for ReadCallback() to read and write data.
   void WriteData(size_t requested_bytes);
   void ReadData();
 
   // Close() helper function to free internal structs.
   void Reset();
 
   // AudioParameters from the constructor.
   const AudioParameters params_;
 
+  // Device unique ID of the input device.
+  const std::string input_device_id_;
+
   // Audio manager that created us.  Used to report that we've closed.
   AudioManagerBase* manager_;
 
   // PulseAudio API structs.
   pa_context* pa_context_;
   pa_threaded_mainloop* pa_mainloop_;
   pa_stream* input_stream_;
   pa_stream* output_stream_;
 
   // Float representation of volume from 0.0 to 1.0.
@@ skipping 12 matching lines @@
   // Temporary storage for recorded data. It gets a packet of data from
   // |fifo_| and deliver the data to OnMoreIOData() callback.
   scoped_ptr<uint8[]> input_data_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(PulseAudioUnifiedStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_PULSE_PULSE_UNIFIED_H_