Graphics.V4L2.Control

Description

Synopsis

• data ControlID
• data MenuID
• data ControlFlag
  • = ControlDisabled
  • | ControlGrabbed
  • | ControlReadOnly
  • | ControlUpdate
  • | ControlInactive
  • | ControlSlider
  • | ControlWriteOnly
  • | ControlUnknown Word32
• data ControlInfo
  • = ControlInteger {
    • controlName :: String
    • controlFlags :: Set ControlFlag
    • controlDefaultInt :: Int
    • controlMinimum :: Int
    • controlMaximum :: Int
    • controlStep :: Int
    }
  • | ControlBoolean {
    • controlName :: String
    • controlFlags :: Set ControlFlag
    • controlDefaultBool :: Bool
    }
  • | ControlButton {
    • controlName :: String
    • controlFlags :: Set ControlFlag
    }
  • | ControlInteger64 {
    • controlName :: String
    • controlFlags :: Set ControlFlag
    }
  • | ControlString {
    • controlName :: String
    • controlFlags :: Set ControlFlag
    • controlLengthWithout0 :: Int
    }
  • | ControlMenu {
    • controlName :: String
    • controlFlags :: Set ControlFlag
    • controlDefaultMenu :: MenuID
    • controlMenu :: Map MenuID String
    }
• queryControls :: Device -> IO (Map ControlID ControlInfo)
• data Activate = Activate
• class ControlData d
• getControl :: ControlData d => Device -> ControlID -> IO d
• setControl :: ControlData d => Device -> ControlID -> d -> IO ()

Documentation