chromecast/media/audio/cast_audio_manager.h

   1 // Copyright 2015 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 CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_H_
   6 #define CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_H_
   7
   8 #include "base/macros.h"
   9 #include "media/audio/audio_manager_base.h"
  10
  11 namespace chromecast {
  12
  13 class TaskRunnerImpl;
  14
  15 namespace media {
  16
  17 class MediaPipelineBackend;
  18
  19 class CastAudioManager : public ::media::AudioManagerBase {
  20  public:
  21   explicit CastAudioManager(::media::AudioLogFactory* audio_log_factory);
  22   ~CastAudioManager() override;
  23
  24   // AudioManager implementation.
  25   bool HasAudioOutputDevices() override;
  26   bool HasAudioInputDevices() override;
  27   void ShowAudioInputSettings() override;
  28   void GetAudioInputDeviceNames(
  29       ::media::AudioDeviceNames* device_names) override;
  30   ::media::AudioParameters GetInputStreamParameters(
  31       const std::string& device_id) override;
  32
  33   // This must be called on audio thread.
  34   // See AudioManager::GetTaskRunner.
  35   virtual scoped_ptr<MediaPipelineBackend> CreateMediaPipelineBackend();
  36
  37  private:
  38   // AudioManagerBase implementation.
  39   ::media::AudioOutputStream* MakeLinearOutputStream(
  40       const ::media::AudioParameters& params) override;
  41   ::media::AudioOutputStream* MakeLowLatencyOutputStream(
  42       const ::media::AudioParameters& params,
  43       const std::string& device_id) override;
  44   ::media::AudioInputStream* MakeLinearInputStream(
  45       const ::media::AudioParameters& params,
  46       const std::string& device_id) override;
  47   ::media::AudioInputStream* MakeLowLatencyInputStream(
  48       const ::media::AudioParameters& params,
  49       const std::string& device_id) override;
  50   ::media::AudioParameters GetPreferredOutputStreamParameters(
  51       const std::string& output_device_id,
  52       const ::media::AudioParameters& input_params) override;
  53
  54   scoped_ptr<TaskRunnerImpl> audio_task_runner_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(CastAudioManager);
  57 };
  58
  59 }  // namespace media
  60 }  // namespace chromecast
  61
  62 #endif  // CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_H_