Remove the wave based audio capture implementation for Windows

media/audio/win/wavein_input_win.h

Index: media/audio/win/wavein_input_win.h
diff --git a/media/audio/win/wavein_input_win.h b/media/audio/win/wavein_input_win.h
deleted file mode 100644
index 17af10f5dcc8f65e67df1b4e8ec760e8b903f1ad..0000000000000000000000000000000000000000
--- a/media/audio/win/wavein_input_win.h
+++ /dev/null
@@ -1,139 +0,0 @@
-// 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_WAVEIN_INPUT_WIN_H_
-#define MEDIA_AUDIO_WIN_WAVEIN_INPUT_WIN_H_
-
-#include <windows.h>
-#include <mmsystem.h>
-#include <stdint.h>
-
-#include <memory>
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_checker.h"
-#include "base/win/scoped_handle.h"
-#include "media/audio/audio_io.h"
-#include "media/base/audio_parameters.h"
-
-namespace media {
-
-class AudioBus;
-class AudioManagerWin;
-
-class PCMWaveInAudioInputStream : public AudioInputStream {
- public:
-  // The ctor takes all the usual parameters, plus |manager| which is the
-  // the audio manager who is creating this object and |device_id| which
-  // is provided by the operating system.
-  PCMWaveInAudioInputStream(AudioManagerWin* manager,
-                            const AudioParameters& params,
-                            int num_buffers,
-                            const std::string& device_id);
-  ~PCMWaveInAudioInputStream() override;
-
-  // Implementation of AudioInputStream.
-  bool Open() override;
-  void Start(AudioInputCallback* callback) override;
-  void Stop() override;
-  void Close() override;
-  // TODO(henrika): Add volume support using the Audio Mixer API.
-  double GetMaxVolume() override;
-  void SetVolume(double volume) override;
-  double GetVolume() override;
-  bool SetAutomaticGainControl(bool enabled) override;
-  bool GetAutomaticGainControl() override;
-  bool IsMuted() override;
-
- private:
-  enum State {
-    kStateEmpty,      // Initial state.
-    kStateReady,      // Device obtained and ready to record.
-    kStateRecording,  // Recording audio.
-    kStateStopping,   // Trying to stop, waiting for callback to finish.
-    kStateStopped,    // Stopped. Device was reset.
-    kStateClosed      // Device has been released.
-  };
-
-  // Allow unit tests to query the device ID.
-  friend class AudioManagerTest;
-
-  // Windows calls us back with the recorded audio data here. See msdn
-  // documentation for 'waveInProc' for details about the parameters.
-  static void CALLBACK WaveCallback(HWAVEIN hwi, UINT msg, DWORD_PTR instance,
-                                    DWORD_PTR param1, DWORD_PTR param2);
-
-  // If windows reports an error this function handles it and passes it to
-  // the attached AudioInputCallback::OnError().
-  void HandleError(MMRESULT error);
-
-  // Allocates and prepares the memory that will be used for recording.
-  void SetupBuffers();
-
-  // Deallocates the memory allocated in SetupBuffers.
-  void FreeBuffers();
-
-  // Sends a buffer to the audio driver for recording.
-  void QueueNextPacket(WAVEHDR* buffer);
-
-  // Converts the stored device id string into an unsigned integer which
-  // can be used by waveInOpen() to open the specified capture device.
-  bool GetDeviceId(UINT* device_index);
-
-  base::ThreadChecker thread_checker_;
-
-  // Reader beware. Visual C has stronger guarantees on volatile vars than
-  // most people expect. In fact, it has release semantics on write and
-  // acquire semantics on reads. See the msdn documentation.
-  volatile State state_;
-
-  // The audio manager that created this input stream. We notify it when
-  // we close so it can release its own resources.
-  AudioManagerWin* manager_;
-
-  // We use the callback mostly to periodically give the recorded audio data.
-  AudioInputCallback* callback_;
-
-  // The number of buffers of size |buffer_size_| each to use.
-  const int num_buffers_;
-
-  // The size in bytes of each audio buffer.
-  uint32_t buffer_size_;
-
-  // Channels, 1 or 2.
-  const int channels_;
-
-  // Contains the unique name of the selected endpoint device.
-  // Note that AudioDeviceDescription::kDefaultDeviceId represents the default
-  // device role and is not a valid ID as such.
-  std::string device_id_;
-
-  // Windows native structure to encode the format parameters.
-  WAVEFORMATEX format_;
-
-  // Handle to the instance of the wave device.
-  HWAVEIN wavein_;
-
-  // Pointer to the first allocated audio buffer. This object owns it.
-  WAVEHDR* buffer_;
-
-  // An event that is signaled when the callback thread is ready to stop.
-  base::win::ScopedHandle stopped_event_;
-
-  // Lock used to avoid conflicts when Stop() is called during a callback.
-  base::Lock lock_;
-
-  // Extra audio bus used for storage of deinterleaved data for the OnData
-  // callback.
-  std::unique_ptr<media::AudioBus> audio_bus_;
-
-  DISALLOW_COPY_AND_ASSIGN(PCMWaveInAudioInputStream);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_AUDIO_WIN_WAVEIN_INPUT_WIN_H_