Controlling Audio and Video Devices
AVDeviceCtrl
API Description
This API is used to control local microphones, speakers, and cameras.
Precautions
This API is an asynchronous API. The return value only indicates whether the API is successfully called. The actual service processing result is returned in the corresponding callback function.
Method Definition
HWM_SDK_AGENT_API hwmsdk::HwmErrCode AVDeviceCtrl(HwmDeviceType deviceType, bool isOpen);
Callback Function
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|
virtual void OnAVDeviceCtrlResult(hwmsdk::HwmErrCode ret, const char* reason, HwmDeviceType deviceType) {}; |
Parameter Description
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
HwmDeviceType |
Yes |
HwmDeviceType |
Device type enumeration. |
isOpen |
Yes |
bool |
Whether to enable the device. |
Enumerated Value |
Description |
---|---|
HWM_DEVICE_TYPE_MIC |
Microphone |
HWM_DEVICE_TYPE_SPEAKER |
Speaker |
HWM_DEVICE_TYPE_CAMERA |
Camera |
Return Values
Type |
Description |
---|---|
HwmErrCode |
If 0 is returned, the operation is successful. If other values are returned, the operation fails. For details about values returned upon failures, see Common Error Codes. |
Sample Code
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/** * Control audio and video devices. */ int demoAVDeviceCtrlDlg::ClickAVDeviceCtrl() { hwmsdkagent::HwmDeviceType deviceType = hwmsdkagent::HwmDeviceType::HWM_DEVICE_TYPE_MIC; bool isOpen = true; int ret = hwmsdkagent::AVDeviceCtrl(deviceType, isOpen); if (hwmsdk::HWM_COMMON_SUCCESS != ret) { AfxMessageBox(_T("AVDeviceCtrl error")); } } |
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