1 // Copyright (c) 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 CHROMEOS_AUDIO_AUDIO_DEVICE_H_ 6 #define CHROMEOS_AUDIO_AUDIO_DEVICE_H_ 7 8 #include <map> 9 #include <string> 10 #include <vector> 11 12 #include "base/basictypes.h" 13 #include "chromeos/chromeos_export.h" 14 #include "chromeos/dbus/audio_node.h" 15 16 namespace chromeos { 17 18 // Ordered from the highest priority to the lowest. 19 enum AudioDeviceType { 20 AUDIO_TYPE_HEADPHONE, 21 AUDIO_TYPE_MIC, 22 AUDIO_TYPE_USB, 23 AUDIO_TYPE_BLUETOOTH, 24 AUDIO_TYPE_HDMI, 25 AUDIO_TYPE_INTERNAL_SPEAKER, 26 AUDIO_TYPE_INTERNAL_MIC, 27 AUDIO_TYPE_OTHER, 28 }; 29 30 struct CHROMEOS_EXPORT AudioDevice { 31 bool is_input; 32 uint64 id; 33 std::string display_name; 34 std::string device_name; 35 AudioDeviceType type; 36 uint8 priority; 37 bool active; 38 uint64 plugged_time; 39 40 AudioDevice(); 41 explicit AudioDevice(const AudioNode& node); 42 std::string ToString() const; 43 }; 44 45 typedef std::vector<AudioDevice> AudioDeviceList; 46 typedef std::map<uint64, AudioDevice> AudioDeviceMap; 47 48 struct AudioDeviceCompare { 49 // Rules used to discern which device is higher, 50 // 1.) Device Type: 51 // [Headphones/USB/Bluetooh > HDMI > Internal Speakers] 52 // [External Mic/USB Mic/Bluetooth > Internal Mic] 53 // 2.) Device Plugged in Time: 54 // [Later > Earlier] operatorAudioDeviceCompare55 bool operator()(const chromeos::AudioDevice& a, 56 const chromeos::AudioDevice& b) const { 57 if (a.priority < b.priority) { 58 return true; 59 } else if (b.priority < a.priority) { 60 return false; 61 } else if (a.plugged_time < b.plugged_time) { 62 return true; 63 } else { 64 return false; 65 } 66 } 67 }; 68 69 } // namespace chromeos 70 71 #endif // CHROMEOS_AUDIO_AUDIO_DEVICE_H_ 72