remoting/host/audio_capturer_win.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef REMOTING_HOST_AUDIO_CAPTURER_WIN_H_
   6 #define REMOTING_HOST_AUDIO_CAPTURER_WIN_H_
   7
   8 #include <audioclient.h>
   9 #include <mmdeviceapi.h>
  10
  11 #include "base/basictypes.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/threading/thread_checker.h"
  14 #include "base/timer/timer.h"
  15 #include "base/win/scoped_co_mem.h"
  16 #include "base/win/scoped_comptr.h"
  17 #include "remoting/host/audio_capturer.h"
  18 #include "remoting/host/audio_silence_detector.h"
  19 #include "remoting/proto/audio.pb.h"
  20
  21 namespace remoting {
  22
  23 class AudioCapturerWin : public AudioCapturer {
  24  public:
  25   AudioCapturerWin();
  26   virtual ~AudioCapturerWin();
  27
  28   // AudioCapturer interface.
  29   virtual bool Start(const PacketCapturedCallback& callback) OVERRIDE;
  30   virtual void Stop() OVERRIDE;
  31   virtual bool IsStarted() OVERRIDE;
  32
  33  private:
  34   // Receives all packets from the audio capture endpoint buffer and pushes them
  35   // to the network.
  36   void DoCapture();
  37
  38   PacketCapturedCallback callback_;
  39
  40   AudioPacket::SamplingRate sampling_rate_;
  41
  42   scoped_ptr<base::RepeatingTimer<AudioCapturerWin> > capture_timer_;
  43   base::TimeDelta audio_device_period_;
  44
  45   AudioSilenceDetector silence_detector_;
  46
  47   base::win::ScopedCoMem<WAVEFORMATEX> wave_format_ex_;
  48   base::win::ScopedComPtr<IAudioCaptureClient> audio_capture_client_;
  49   base::win::ScopedComPtr<IAudioClient> audio_client_;
  50   base::win::ScopedComPtr<IMMDevice> mm_device_;
  51
  52   HRESULT last_capture_error_;
  53
  54   base::ThreadChecker thread_checker_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(AudioCapturerWin);
  57 };
  58
  59 }  // namespace remoting
  60
  61 #endif  // REMOTING_HOST_AUDIO_CAPTURER_WIN_H_