Create iOS Audio Manager implementation.

media/audio/mac/audio_input_mac.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_MAC_AUDIO_INPUT_MAC_H_
 #define MEDIA_AUDIO_MAC_AUDIO_INPUT_MAC_H_
 
 #include <AudioToolbox/AudioQueue.h>
 #include <AudioToolbox/AudioFormat.h>
 
 #include "base/compiler_specific.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 
 namespace media {
 
-class AudioManagerMac;
+class AudioManagerBase;

[DaleCurtis, 2012/09/07 11:31:12]

Why change these?

[stuartmorgan, 2012/09/07 11:35:30]

iOS uses AudioManagerIOS; otherwise the implementation is completely shareable
between Mac and iOS. Since nothing in this class requires anything but the AMB
interface, this lets us share the class between Mac and iOS without ifdef-ing
the manager type.

 
 // Implementation of AudioInputStream for Mac OS X using the audio queue service
 // present in OS 10.5 and later. Design reflects PCMQueueOutAudioOutputStream.
 class PCMQueueInAudioInputStream : public AudioInputStream {
  public:
   // Parameters as per AudioManager::MakeAudioInputStream.
-  PCMQueueInAudioInputStream(AudioManagerMac* manager,
+  PCMQueueInAudioInputStream(AudioManagerBase* manager,
                              const AudioParameters& params);
   virtual ~PCMQueueInAudioInputStream();
 
   // Implementation of AudioInputStream.
   virtual bool Open() OVERRIDE;
   virtual void Start(AudioInputCallback* callback) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void Close() OVERRIDE;
   virtual double GetMaxVolume() OVERRIDE;
   virtual void SetVolume(double volume) OVERRIDE;
@@ skipping 23 matching lines @@
   // Handles callback from OS. Will be called on OS internal thread.
   void HandleInputBuffer(AudioQueueRef audio_queue,
                          AudioQueueBufferRef audio_buffer,
                          const AudioTimeStamp* start_time,
                          UInt32 num_packets,
                          const AudioStreamPacketDescription* packet_desc);
 
   static const int kNumberBuffers = 3;
 
   // Manager that owns this stream, used for closing down.
-  AudioManagerMac* manager_;
+  AudioManagerBase* manager_;
   // We use the callback mostly to periodically supply the recorded audio data.
   AudioInputCallback* callback_;
   // Structure that holds the stream format details such as bitrate.
   AudioStreamBasicDescription format_;
   // Handle to the OS audio queue object.
   AudioQueueRef audio_queue_;
   // Size of each of the buffers in |audio_buffers_|
   uint32 buffer_size_bytes_;
   // True iff Start() has been called successfully.
   bool started_;
 
   DISALLOW_COPY_AND_ASSIGN(PCMQueueInAudioInputStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_MAC_AUDIO_INPUT_MAC_H_