media/audio/mock_audio_manager.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 MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_
   6 #define MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_
   7
   8 #include "media/audio/audio_manager.h"
   9
  10 namespace media {
  11
  12 // This class is a simple mock around AudioManager, used exclusively for tests,
  13 // which has the following purposes:
  14 // 1) Avoids to use the actual (system and platform dependent) AudioManager.
  15 //    Some bots does not have input devices, thus using the actual AudioManager
  16 //    would causing failures on classes which expect that.
  17 // 2) Allows the mock audio events to be dispatched on an arbitrary thread,
  18 //    rather than forcing them on the audio thread, easing their handling in
  19 //    browser tests (Note: sharing a thread can cause deadlocks on production
  20 //    classes if WaitableEvents or any other form of lock is used for
  21 //    synchronization purposes).
  22 class MockAudioManager : public media::AudioManager {
  23  public:
  24   explicit MockAudioManager(
  25       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
  26
  27   bool HasAudioOutputDevices() override;
  28
  29   bool HasAudioInputDevices() override;
  30
  31   base::string16 GetAudioInputDeviceModel() override;
  32
  33   void ShowAudioInputSettings() override;
  34
  35   void GetAudioInputDeviceNames(media::AudioDeviceNames* device_names) override;
  36
  37   void GetAudioOutputDeviceNames(
  38       media::AudioDeviceNames* device_names) override;
  39
  40   media::AudioOutputStream* MakeAudioOutputStream(
  41       const media::AudioParameters& params,
  42       const std::string& device_id) override;
  43
  44   media::AudioOutputStream* MakeAudioOutputStreamProxy(
  45       const media::AudioParameters& params,
  46       const std::string& device_id) override;
  47
  48   media::AudioInputStream* MakeAudioInputStream(
  49       const media::AudioParameters& params,
  50       const std::string& device_id) override;
  51
  52   scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() override;
  53   scoped_refptr<base::SingleThreadTaskRunner> GetWorkerTaskRunner() override;
  54
  55   void AddOutputDeviceChangeListener(AudioDeviceListener* listener) override;
  56   void RemoveOutputDeviceChangeListener(AudioDeviceListener* listener) override;
  57
  58   AudioParameters GetDefaultOutputStreamParameters() override;
  59   AudioParameters GetOutputStreamParameters(
  60       const std::string& device_id) override;
  61   AudioParameters GetInputStreamParameters(
  62       const std::string& device_id) override;
  63   std::string GetAssociatedOutputDeviceID(
  64       const std::string& input_device_id) override;
  65
  66   scoped_ptr<AudioLog> CreateAudioLog(
  67       AudioLogFactory::AudioComponent component) override;
  68
  69   void SetHasKeyboardMic() override;
  70
  71  protected:
  72   ~MockAudioManager() override;
  73
  74  private:
  75   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(MockAudioManager);
  78 };
  79
  80 }  // namespace media.
  81
  82 #endif  // MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_