103 lines
2.6 KiB
C++
103 lines
2.6 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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DeviceManager.h
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Created by Michael Chinen (mchinen) on 2/12/11
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Audacity(R) is copyright (c) 1999-2011 Audacity Team.
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License: GPL v2. See License.txt.
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******************************************************************//**
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\class DeviceManager
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\brief A singleton that manages the audio devices known to Audacity
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*//*******************************************************************/
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#ifndef __AUDACITY_DEVICEMANAGER__
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#define __AUDACITY_DEVICEMANAGER__
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#include <chrono>
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#include <vector>
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#include <wx/event.h> // to declare a custom event type
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#include <wx/string.h> // member variables
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#if defined(EXPERIMENTAL_DEVICE_CHANGE_HANDLER)
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#include "DeviceChange.h"
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#endif
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// Event sent to the application
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wxDECLARE_EXPORTED_EVENT(AUDACITY_DLL_API,
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EVT_RESCANNED_DEVICES, wxCommandEvent);
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typedef struct DeviceSourceMap {
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int deviceIndex;
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int sourceIndex;
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int hostIndex;
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int totalSources;
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int numChannels;
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wxString sourceString;
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wxString deviceString;
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wxString hostString;
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} DeviceSourceMap;
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AUDACITY_DLL_API
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wxString MakeDeviceSourceString(const DeviceSourceMap *map);
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class AUDACITY_DLL_API DeviceManager final
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#if defined(EXPERIMENTAL_DEVICE_CHANGE_HANDLER)
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#if defined(HAVE_DEVICE_CHANGE)
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: public DeviceChangeHandler
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#endif
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#endif
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{
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public:
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/// Gets the singleton instance
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static DeviceManager* Instance();
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/// Gets a NEW list of devices by terminating and restarting portaudio
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/// Assumes that DeviceManager is only used on the main thread.
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void Rescan();
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// Time since devices scanned in seconds.
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float GetTimeSinceRescan();
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DeviceSourceMap* GetDefaultOutputDevice(int hostIndex);
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DeviceSourceMap* GetDefaultInputDevice(int hostIndex);
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const std::vector<DeviceSourceMap> &GetInputDeviceMaps();
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const std::vector<DeviceSourceMap> &GetOutputDeviceMaps();
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#if defined(EXPERIMENTAL_DEVICE_CHANGE_HANDLER)
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#if defined(HAVE_DEVICE_CHANGE)
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// DeviceChangeHandler implementation
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void DeviceChangeNotification();
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#endif
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#endif
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private:
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std::chrono::time_point<std::chrono::steady_clock> mRescanTime;
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protected:
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//private constructor - Singleton.
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DeviceManager();
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~DeviceManager();
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/// Does an initial scan.
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/// Called by GetInputDeviceMaps and GetOutputDeviceMaps when needed.
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void Init();
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DeviceSourceMap* GetDefaultDevice(int hostIndex, int isInput);
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bool m_inited;
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std::vector<DeviceSourceMap> mInputDeviceSourceMaps;
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std::vector<DeviceSourceMap> mOutputDeviceSourceMaps;
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static DeviceManager dm;
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};
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#endif
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