1 // Copyright 2013 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_MAC_AGGREGATE_DEVICE_MANAGER_H_ 6 #define MEDIA_AUDIO_MAC_AGGREGATE_DEVICE_MANAGER_H_ 7 8 #include <CoreAudio/CoreAudio.h> 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "media/base/media_export.h" 13 14 namespace media { 15 16 class MEDIA_EXPORT AggregateDeviceManager { 17 public: 18 AggregateDeviceManager(); 19 ~AggregateDeviceManager(); 20 21 // Lazily creates an aggregate device based on the default 22 // input and output devices. 23 // It will either return a valid device or kAudioDeviceUnknown 24 // if the default devices are not suitable for aggregate devices. 25 AudioDeviceID GetDefaultAggregateDevice(); 26 27 private: 28 // The caller is responsible for releasing the CFStringRef. 29 static CFStringRef GetDeviceUID(AudioDeviceID id); 30 31 static void GetDeviceName(AudioDeviceID id, char* name, UInt32 size); 32 static UInt32 GetClockDomain(AudioDeviceID device_id); 33 static OSStatus GetPluginID(AudioObjectID* id); 34 35 CFMutableDictionaryRef CreateAggregateDeviceDictionary( 36 AudioDeviceID input_id, 37 AudioDeviceID output_id); 38 39 CFMutableArrayRef CreateSubDeviceArray(CFStringRef input_device_UID, 40 CFStringRef output_device_UID); 41 42 OSStatus CreateAggregateDevice(AudioDeviceID input_id, 43 AudioDeviceID output_id, 44 AudioDeviceID* aggregate_device); 45 void DestroyAggregateDevice(); 46 47 AudioObjectID plugin_id_; 48 AudioDeviceID input_device_; 49 AudioDeviceID output_device_; 50 51 AudioDeviceID aggregate_device_; 52 53 DISALLOW_COPY_AND_ASSIGN(AggregateDeviceManager); 54 }; 55 56 } // namespace media 57 58 #endif // MEDIA_AUDIO_MAC_AGGREGATE_DEVICE_MANAGER_H_ 59
