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(base::MessageLoopProxy* message_loop_proxy);
  25
  26   virtual bool HasAudioOutputDevices() OVERRIDE;
  27
  28   virtual bool HasAudioInputDevices() OVERRIDE;
  29
  30   virtual string16 GetAudioInputDeviceModel() OVERRIDE;
  31
  32   virtual void ShowAudioInputSettings() OVERRIDE;
  33
  34   virtual void GetAudioInputDeviceNames(
  35       media::AudioDeviceNames* device_names) OVERRIDE;
  36
  37   virtual media::AudioOutputStream* MakeAudioOutputStream(
  38       const media::AudioParameters& params,
  39       const std::string& input_device_id) OVERRIDE;
  40
  41   virtual media::AudioOutputStream* MakeAudioOutputStreamProxy(
  42       const media::AudioParameters& params,
  43       const std::string& input_device_id) OVERRIDE;
  44
  45   virtual media::AudioInputStream* MakeAudioInputStream(
  46       const media::AudioParameters& params,
  47       const std::string& device_id) OVERRIDE;
  48
  49   virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() OVERRIDE;
  50   virtual scoped_refptr<base::MessageLoopProxy> GetWorkerLoop() OVERRIDE;
  51
  52   virtual void AddOutputDeviceChangeListener(
  53       AudioDeviceListener* listener) OVERRIDE;
  54   virtual void RemoveOutputDeviceChangeListener(
  55       AudioDeviceListener* listener) OVERRIDE;
  56
  57   virtual AudioParameters GetDefaultOutputStreamParameters() OVERRIDE;
  58   virtual AudioParameters GetInputStreamParameters(
  59       const std::string& device_id) OVERRIDE;
  60
  61  private:
  62   virtual ~MockAudioManager();
  63
  64   scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(MockAudioManager);
  67 };
  68
  69 }  // namespace media.
  70
  71 #endif  // MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_