| // 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_MAC_AUDIO_MANAGER_MAC_H_ |
| #define MEDIA_AUDIO_MAC_AUDIO_MANAGER_MAC_H_ |
| |
| #include <CoreAudio/AudioHardware.h> |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/message_loop/message_loop_proxy.h" |
| #include "media/audio/audio_manager_base.h" |
| #include "media/audio/mac/aggregate_device_manager.h" |
| #include "media/audio/mac/audio_device_listener_mac.h" |
| |
| namespace media { |
| |
| // Mac OS X implementation of the AudioManager singleton. This class is internal |
| // to the audio output and only internal users can call methods not exposed by |
| // the AudioManager class. |
| class MEDIA_EXPORT AudioManagerMac : public AudioManagerBase { |
| public: |
| AudioManagerMac(AudioLogFactory* audio_log_factory); |
| |
| // Implementation of AudioManager. |
| virtual bool HasAudioOutputDevices() OVERRIDE; |
| virtual bool HasAudioInputDevices() OVERRIDE; |
| virtual void GetAudioInputDeviceNames( |
| AudioDeviceNames* device_names) OVERRIDE; |
| virtual void GetAudioOutputDeviceNames( |
| AudioDeviceNames* device_names) OVERRIDE; |
| virtual AudioParameters GetInputStreamParameters( |
| const std::string& device_id) OVERRIDE; |
| virtual std::string GetAssociatedOutputDeviceID( |
| const std::string& input_device_id) OVERRIDE; |
| |
| // Implementation of AudioManagerBase. |
| virtual AudioOutputStream* MakeLinearOutputStream( |
| const AudioParameters& params) OVERRIDE; |
| virtual AudioOutputStream* MakeLowLatencyOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const std::string& input_device_id) OVERRIDE; |
| virtual AudioInputStream* MakeLinearInputStream( |
| const AudioParameters& params, const std::string& device_id) OVERRIDE; |
| virtual AudioInputStream* MakeLowLatencyInputStream( |
| const AudioParameters& params, const std::string& device_id) OVERRIDE; |
| virtual std::string GetDefaultOutputDeviceID() OVERRIDE; |
| |
| static bool GetDefaultInputDevice(AudioDeviceID* device); |
| static bool GetDefaultOutputDevice(AudioDeviceID* device); |
| static bool GetDefaultDevice(AudioDeviceID* device, bool input); |
| |
| static bool GetDefaultOutputChannels(int* channels); |
| |
| static bool GetDeviceChannels(AudioDeviceID device, |
| AudioObjectPropertyScope scope, |
| int* channels); |
| |
| static int HardwareSampleRateForDevice(AudioDeviceID device_id); |
| static int HardwareSampleRate(); |
| |
| protected: |
| virtual ~AudioManagerMac(); |
| |
| virtual AudioParameters GetPreferredOutputStreamParameters( |
| const std::string& output_device_id, |
| const AudioParameters& input_params) OVERRIDE; |
| |
| private: |
| bool HasUnifiedDefaultIO(); |
| |
| // Helper methods for constructing AudioDeviceListenerMac on the audio thread. |
| void CreateDeviceListener(); |
| void DestroyDeviceListener(); |
| |
| int ChooseBufferSize(int output_sample_rate); |
| |
| // Notify streams of a device change if the default output device or its |
| // sample rate has changed, otherwise does nothing. |
| void HandleDeviceChanges(); |
| |
| scoped_ptr<AudioDeviceListenerMac> output_device_listener_; |
| |
| // Track the output sample-rate and the default output device |
| // so we can intelligently handle device notifications only when necessary. |
| int current_sample_rate_; |
| AudioDeviceID current_output_device_; |
| |
| AggregateDeviceManager aggregate_device_manager_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AudioManagerMac); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_AUDIO_MAC_AUDIO_MANAGER_MAC_H_ |