Function Reference
FFApplyFilterOnSnapShotApplies an AND filter on each pixels in the SnapShot.
FFApplyFilterOnSnapShot ( Red, Green,
Blue [, NoSnapShot ] )
Parameters
| Red | Filter to apply on the Red Chanel. Value are in [0, 255] range : 0 will completely remove the Red component on each pixel. 255 will not change the Red component. |
| Green | Filter to apply on the Green Chanel. Value are in [0, 255] range : 0 will completely remove the Green component on each pixel. 255 will not change the Green component. |
| Blue | Filter to apply on the Blue Chanel. Value are in [0, 255] range : 0 will completely remove the Blue component on each pixel. 255 will not change the Blue component. |
| NoSnapShot | [optional] SnapShot number. Default is the most recent SnapShot taken. |
Return Value
| Success: | Returns the color value of the pixel. |
| Failure: | Returns -1 and sets @ERROR |
Remarks
You can use this function to lower color resolution (number of useful bits per pixel) : FFApplyFilterOnSnapShot ( 0xF0, 0xF0, 0xF0) for instance will keep only 12 bits / pixels instead of 24.With FFDuplicateSnapShot, it can also split Red, Green and Blue components on different Snapshots.
Related
FFSnapShot, FFDuplicateSnapShot, FFSaveBMP, FFSaveJPG