MATLAB IMAGE ACQUISITION TOOLBOX - RELEASE NOTES Guide de l'utilisateur télécharger pdf (Page 111)

Specifying Device Driver Identification Information

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Specifying Device Driver Identification Information

Two of the virtual functions you must implement return identification information about

the device driver used to communicate with your device. This information can be useful

for debugging purposes.

• getDriverDescription() — Returns a text string that identifies the device.

• getDriverVersion() — Returns a text string that specifies the version of the

device driver.

Adaptors typically use an SDK function to query the device to get this information, if the

SDK supports it, or obtain the information from the device documentation.

User Scenario

The identification text strings returned by getDriverDescription() and

getDriverVersion() are visible to users if they call imaqhwinfo, specifying a video

input object as an argument, as follows.

vid = videoinput('mydeviceimaq');

imaqhwinfo(vid)

ans =

AdaptorName: 'mydeviceimaq'

DeviceName: 'MyDevice'

MaxHeight: 280

MaxWidth: 120

TotalSources: 1

VendorDriverDescription: 'MyDevice_Driver'

VendorDriverVersion: '1.0.0'

Example

The following example contains skeletal implementations of the

getDriverDescription() and getDriverVersion() functions.

const char* MyDeviceAdaptor::getDriverDescription() const{

return "MyDevice_Driver";

}

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MATLAB IMAGE ACQUISITION TOOLBOX - RELEASE NOTES Guide de l'utilisateur Page 111