typedef enum ltmmVideoProcAmpProperty
{
ltmmVideoProcAmp_Brightness = 0,
ltmmVideoProcAmp_Contrast = ( ltmmVideoProcAmp_Brightness + 1 ),
ltmmVideoProcAmp_Hue = ( ltmmVideoProcAmp_Contrast + 1 ),
ltmmVideoProcAmp_Saturation = ( ltmmVideoProcAmp_Hue + 1 ),
ltmmVideoProcAmp_Sharpness = ( ltmmVideoProcAmp_Saturation + 1 ),
ltmmVideoProcAmp_Gamma = ( ltmmVideoProcAmp_Sharpness + 1 ),
ltmmVideoProcAmp_ColorEnable = ( ltmmVideoProcAmp_Gamma + 1 ),
ltmmVideoProcAmp_WhiteBalance = ( ltmmVideoProcAmp_ColorEnable + 1 ),
ltmmVideoProcAmp_BacklightCompensation = ( ltmmVideoProcAmp_WhiteBalance + 1 ),
ltmmVideoProcAmp_Gain = ( ltmmVideoProcAmp_BacklightCompensation + 1 )
} ltmmVideoProcAmpProperty;
The ltmmVideoProcAmpProperty constants specify the video properties on a video capture device. The values listed below can be used with some of the IltmmVideoProcAmp Interface functions.
Constant |
Description |
ltmmVideoProcAmp_Brightness |
[0] Specifies the brightness, also called the black level. For NTSC, the value is expressed in IRE units * 100. For non-NTSC sources, the units are arbitrary, with zero representing blanking and 10,000 representing pure white. Values range from 10,000 to 10,000. |
ltmmVideoProcAmp_Contrast |
[1] Specifies the contrast, expressed as gain factor * 100. Values range from zero to 10,000. |
ltmmVideoProcAmp_Hue |
[2] Specifies the hue, in degrees * 100. Values range from -180,000 to 180,000 (-180 to +180 degrees). |
ltmmVideoProcAmp_Saturation |
[3] Specifies the saturation. Values range from 0 to 10,000. |
ltmmVideoProcAmp_Sharpness |
[4] Specifies the sharpness. Values range from 0 to 100. |
ltmmVideoProcAmp_Gamma |
[5] Specifies the gamma, as gamma * 100. Values range from 1 to 500. |
ltmmVideoProcAmp_ColorEnable |
[6] Specifies the color enable setting. The possible values are 0 (off) and 1 (on). |
ltmmVideoProcAmp_WhiteBalance |
[7] Specifies the white balance, as a color temperature in degrees Kelvin. The range of values depends on the device. |
ltmmVideoProcAmp_BacklightCompensation |
[8] Specifies the backlight compensation setting. Possible values are 0 (off) and 1 (on). |
ltmmVideoProcAmp_Gain |
[9] Specifies the gain adjustment. Zero is normal. Positive values are brighter and negative values are darker. The range of values depends on the device. |
For more detailed information, refer to the MSDN Microsoft documentation for the VideoProcAmpProperty Enumeration.
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