KSCAMERA_EXTENDEDPROP_EVCOMPENSATION structure (ksmedia.h)
The EV Compensation Control provides for exposure control that is adjusted by increments of EV compensation steps.
Syntax
typedef struct tagKSCAMERA_EXTENDEDPROP_EVCOMPENSATION {
ULONG Mode;
LONG Min;
LONG Max;
LONG Value;
ULONGLONG Reserved;
} KSCAMERA_EXTENDEDPROP_EVCOMPENSATION, *PKSCAMERA_EXTENDEDPROP_EVCOMPENSATION;
Members
Mode
Not used. Set to 0.
Min
The minimum EV compensation supported. This is an absolute EV value.
Max
The maximum EV compensation supported. This is an absolute EV value.
Value
EV Compensation in units of steps selected in the Flags member of KSCAMERA_EXTENDEDPROP_HEADER.
Reserved
Reserved.
Remarks
Value is assigned a stepping increment. For example, if Min = -2, Max = 2 and the compensation stepping is set as one third step (incremented in units of 1/3 EV compensation), the valid values of EV compensation are -2, -1 2/3, -1 1/3, -1, -2/3, -1/3, 0, 1/3, 2/3, 1, 1 1/3, 1 2/3, and 2. This corresponds to the Value field as -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6. As an example, if Value = -6, then EV compensation = -2, or (-6 * 1/3) = -2.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 8.1. |
| Header | ksmedia.h (include Ksmedia.h) |