C++設定預設聲音輸出裝置(SetDefaultAudioPlaybackDevice)
阿新 • • 發佈:2022-05-19
需要PolicyConfig.h標頭檔案
// ---------------------------------------------------------------------------- // PolicyConfig.h // Undocumented COM-interface IPolicyConfig. // Use for set default audio render endpoint // @author EreTIk // ---------------------------------------------------------------------------- #pragma once #include <mmeapi.h> interface DECLSPEC_UUID("f8679f50-850a-41cf-9c72-430f290290c8") IPolicyConfig; class DECLSPEC_UUID("870af99c-171d-4f9e-af0d-e63df40c2bc9") CPolicyConfigClient; // ---------------------------------------------------------------------------- // class CPolicyConfigClient // {870af99c-171d-4f9e-af0d-e63df40c2bc9} // // interface IPolicyConfig // {f8679f50-850a-41cf-9c72-430f290290c8} // // Query interface: // CComPtr<IPolicyConfig> PolicyConfig; // PolicyConfig.CoCreateInstance(__uuidof(CPolicyConfigClient)); // // @compatible: Windows 7 and Later // ---------------------------------------------------------------------------- interface IPolicyConfig : public IUnknown { public: virtual HRESULT GetMixFormat( PCWSTR, WAVEFORMATEX ** ); virtual HRESULT STDMETHODCALLTYPE GetDeviceFormat( PCWSTR, INT, WAVEFORMATEX ** ); virtual HRESULT STDMETHODCALLTYPE ResetDeviceFormat( PCWSTR ); virtual HRESULT STDMETHODCALLTYPE SetDeviceFormat( PCWSTR, WAVEFORMATEX *, WAVEFORMATEX * ); virtual HRESULT STDMETHODCALLTYPE GetProcessingPeriod( PCWSTR, INT, PINT64, PINT64 ); virtual HRESULT STDMETHODCALLTYPE SetProcessingPeriod( PCWSTR, PINT64 ); virtual HRESULT STDMETHODCALLTYPE GetShareMode( PCWSTR, struct DeviceShareMode * ); virtual HRESULT STDMETHODCALLTYPE SetShareMode( PCWSTR, struct DeviceShareMode * ); virtual HRESULT STDMETHODCALLTYPE GetPropertyValue( PCWSTR, const PROPERTYKEY &, PROPVARIANT * ); virtual HRESULT STDMETHODCALLTYPE SetPropertyValue( PCWSTR, const PROPERTYKEY &, PROPVARIANT * ); virtual HRESULT STDMETHODCALLTYPE SetDefaultEndpoint( __in PCWSTR wszDeviceId, __in ERole eRole ); virtual HRESULT STDMETHODCALLTYPE SetEndpointVisibility( PCWSTR, INT ); }; interface DECLSPEC_UUID("568b9108-44bf-40b4-9006-86afe5b5a620") IPolicyConfigVista; class DECLSPEC_UUID("294935CE-F637-4E7C-A41B-AB255460B862") CPolicyConfigVistaClient; // ---------------------------------------------------------------------------- // class CPolicyConfigVistaClient // {294935CE-F637-4E7C-A41B-AB255460B862} // // interface IPolicyConfigVista // {568b9108-44bf-40b4-9006-86afe5b5a620} // // Query interface: // CComPtr<IPolicyConfigVista> PolicyConfig; // PolicyConfig.CoCreateInstance(__uuidof(CPolicyConfigVistaClient)); // // @compatible: Windows Vista and Later // ---------------------------------------------------------------------------- interface IPolicyConfigVista : public IUnknown { public: virtual HRESULT GetMixFormat( PCWSTR, WAVEFORMATEX ** ); // not available on Windows 7, use method from IPolicyConfig virtual HRESULT STDMETHODCALLTYPE GetDeviceFormat( PCWSTR, INT, WAVEFORMATEX ** ); virtual HRESULT STDMETHODCALLTYPE SetDeviceFormat( PCWSTR, WAVEFORMATEX *, WAVEFORMATEX * ); virtual HRESULT STDMETHODCALLTYPE GetProcessingPeriod( PCWSTR, INT, PINT64, PINT64 ); // not available on Windows 7, use method from IPolicyConfig virtual HRESULT STDMETHODCALLTYPE SetProcessingPeriod( PCWSTR, PINT64 ); // not available on Windows 7, use method from IPolicyConfig virtual HRESULT STDMETHODCALLTYPE GetShareMode( PCWSTR, struct DeviceShareMode * ); // not available on Windows 7, use method from IPolicyConfig virtual HRESULT STDMETHODCALLTYPE SetShareMode( PCWSTR, struct DeviceShareMode * ); // not available on Windows 7, use method from IPolicyConfig virtual HRESULT STDMETHODCALLTYPE GetPropertyValue( PCWSTR, const PROPERTYKEY &, PROPVARIANT * ); virtual HRESULT STDMETHODCALLTYPE SetPropertyValue( PCWSTR, const PROPERTYKEY &, PROPVARIANT * ); virtual HRESULT STDMETHODCALLTYPE SetDefaultEndpoint( __in PCWSTR wszDeviceId, __in ERole eRole ); virtual HRESULT STDMETHODCALLTYPE SetEndpointVisibility( PCWSTR, INT ); // not available on Windows 7, use method from IPolicyConfig };
主程式呼叫使用部分:
#include <iostream> #include<Windows.h> #include "Mmdeviceapi.h" #include "PolicyConfig.h" using namespace std; HRESULT SetDefaultAudioPlaybackDevice(LPCWSTR devID) { HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED); IPolicyConfigVista* pPolicyConfig; ERole reserved = eConsole; hr = CoCreateInstance(__uuidof(CPolicyConfigVistaClient), NULL, CLSCTX_ALL, __uuidof(IPolicyConfigVista), (LPVOID*)&pPolicyConfig); if (SUCCEEDED(hr)) { hr = pPolicyConfig->SetDefaultEndpoint(devID, reserved); pPolicyConfig->Release(); } return hr; } int main() { auto a = L"{0.0.0.00000000}.{863f782c-0d61-47a2-9fe6-15ae008c5e8d}"; //聲音裝置的ID auto b = L"{0.0.0.00000000}.{b5b7d6a2-984e-46ad-bc8f-f49ee617c26a}"; //聲音裝置的ID HRESULT hr = SetDefaultAudioPlaybackDevice(a); //設定預設聲音輸出裝置 if (SUCCEEDED(hr)) { cout << "設定成功" << endl; } else { cout << "設定失敗" << endl; } cout << "退出了" << endl; getchar(); }