KSPROPERTY_VIDEOPROCAMP_POWERLINE_FREQUENCY
The KSPROPERTY_VIDEOPROCAMP_POWERLINE_FREQUENCY property specifies the local power line frequency. The frequency might be necessary if the device supports anti-flicker processing for fluorescent lighting environments.
Usage Summary Table
| Get | Set | Target | Property Descriptor Type | Property Value Type |
|---|---|---|---|---|
Yes |
Yes |
Filter or node |
LONG |
The property value (operation data) is a LONG that specifies the local power line frequency. The value indicates the current power-line setting of the camera.
| Value | Description |
|---|---|
0 |
The power-line frequency control is disabled. |
1 |
The power-line frequency is 50 Hz. |
2 |
The power-line frequency is 60 Hz. |
3 |
The power-line frequency is determined automatically by the system.
Note The auto property value (3) is not available on all cameras (UVC 1.1 specifically).
|
Remarks
When making a set request, the client should supply one of the values in the preceding table in the Value member of the KSPROPERTY_VIDEOPROCAMP_NODE_S structure.
When making a get request, the client receives one of the values in the preceding table in the Value member of the KSPROPERTY_VIDEOPROCAMP_NODE_S structure.
Requirements
Header |
Ksmedia.h (include Ksmedia.h) |