GI.GstVideo.Objects.ColorBalanceChannel

The ColorBalanceChannel object represents a parameter for modifying the color balance implemented by an element providing the ColorBalance interface. For example, Hue or Saturation.

Exported types

newtype ColorBalanceChannel

Memory-managed wrapper type.

Constructors

ColorBalanceChannel (ManagedPtr ColorBalanceChannel)

Instances

GObject ColorBalanceChannel

Methods

gobjectType :: ColorBalanceChannel -> IO GType

IsObject ColorBalanceChannel

IsColorBalanceChannel ColorBalanceChannel

class GObject o => IsColorBalanceChannel o

Type class for types which can be safely cast to ColorBalanceChannel, for instance with toColorBalanceChannel.

Instances

(GObject a, UnknownAncestorError Constraint ColorBalanceChannel a) => IsColorBalanceChannel a

IsColorBalanceChannel ColorBalanceChannel

toColorBalanceChannel :: (MonadIO m, IsColorBalanceChannel o) => o -> m ColorBalanceChannel

Cast to ColorBalanceChannel, for types for which this is known to be safe. For general casts, use castTo.

noColorBalanceChannel :: Maybe ColorBalanceChannel

A convenience alias for Nothing :: Maybe ColorBalanceChannel.

Signals

valueChanged

type C_ColorBalanceChannelValueChangedCallback = Ptr () -> Int32 -> Ptr () -> IO ()

Type for the callback on the (unwrapped) C side.

type ColorBalanceChannelValueChangedCallback

Arguments

 = Int32

value: The new value

-> IO ()

Fired when the value of the indicated channel has changed.

afterColorBalanceChannelValueChanged :: (IsColorBalanceChannel a, MonadIO m) => a -> ColorBalanceChannelValueChangedCallback -> m SignalHandlerId

Connect a signal handler for the “value-changed” signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after colorBalanceChannel #valueChanged callback

genClosure_ColorBalanceChannelValueChanged :: ColorBalanceChannelValueChangedCallback -> IO Closure

Wrap the callback into a Closure.

mk_ColorBalanceChannelValueChangedCallback :: C_ColorBalanceChannelValueChangedCallback -> IO (FunPtr C_ColorBalanceChannelValueChangedCallback)

Generate a function pointer callable from C code, from a C_ColorBalanceChannelValueChangedCallback.

noColorBalanceChannelValueChangedCallback :: Maybe ColorBalanceChannelValueChangedCallback

A convenience synonym for Nothing :: Maybe ColorBalanceChannelValueChangedCallback.

onColorBalanceChannelValueChanged :: (IsColorBalanceChannel a, MonadIO m) => a -> ColorBalanceChannelValueChangedCallback -> m SignalHandlerId

Connect a signal handler for the “value-changed” signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on colorBalanceChannel #valueChanged callback

wrap_ColorBalanceChannelValueChangedCallback :: ColorBalanceChannelValueChangedCallback -> C_ColorBalanceChannelValueChangedCallback

Wrap a ColorBalanceChannelValueChangedCallback into a C_ColorBalanceChannelValueChangedCallback.