GI.GstVideo.Interfaces.ColorBalance

<refsect2><para> This interface is implemented by elements which can perform some color balance operation on video frames they process. For example, modifying the brightness, contrast, hue or saturation. </para><para> Example elements are 'xvimagesink' and 'colorbalance' </para> </refsect2>

Exported types

newtype ColorBalance

Constructors

ColorBalance (ManagedPtr ColorBalance)

Instances

GObject ColorBalance

Methods

gobjectType :: ColorBalance -> IO GType

IsObject ColorBalance

IsColorBalance ColorBalance

((~) * info (ResolveColorBalanceMethod t ColorBalance), MethodInfo * info ColorBalance p) => IsLabel t (ColorBalance -> p)

Methods

fromLabel :: Proxy# Symbol t -> ColorBalance -> p

((~) * info (ResolveColorBalanceMethod t ColorBalance), MethodInfo * info ColorBalance p) => IsLabelProxy t (ColorBalance -> p)

Methods

fromLabelProxy :: Proxy Symbol t -> ColorBalance -> p

HasAttributeList * ColorBalance

type AttributeList ColorBalance

type AttributeList ColorBalance

type SignalList ColorBalance

type SignalList ColorBalance

noColorBalance :: Maybe ColorBalance

class GObject o => IsColorBalance o

Instances

(GObject a, UnknownAncestorError Constraint ColorBalance a) => IsColorBalance a

IsColorBalance ColorBalance

toColorBalance :: IsColorBalance o => o -> IO ColorBalance

Methods

getBalanceType

data ColorBalanceGetBalanceTypeMethodInfo

Instances

((~) * signature (m ColorBalanceType), MonadIO m, IsColorBalance a) => MethodInfo * ColorBalanceGetBalanceTypeMethodInfo a signature

Methods

overloadedMethod :: MethodProxy ColorBalanceGetBalanceTypeMethodInfo a -> signature -> s

colorBalanceGetBalanceType

Arguments

:: (HasCallStack, MonadIO m, IsColorBalance a)

=> a

balance: The ColorBalance implementation

-> m ColorBalanceType

Returns: A the ColorBalanceType.

Get the ColorBalanceType of this implementation.

getValue

data ColorBalanceGetValueMethodInfo

Instances

((~) * signature (b -> m Int32), MonadIO m, IsColorBalance a, IsColorBalanceChannel b) => MethodInfo * ColorBalanceGetValueMethodInfo a signature

Methods

overloadedMethod :: MethodProxy ColorBalanceGetValueMethodInfo a -> signature -> s

colorBalanceGetValue

Arguments

:: (HasCallStack, MonadIO m, IsColorBalance a, IsColorBalanceChannel b)

=> a

balance: A ColorBalance instance

-> b

channel: A ColorBalanceChannel instance

-> m Int32

Returns: The current value of the channel.

Retrieve the current value of the indicated channel, between min_value and max_value.

See Also: The ColorBalanceChannel.min_value and ColorBalanceChannel.max_value members of the ColorBalanceChannel object.

listChannels

data ColorBalanceListChannelsMethodInfo

Instances

((~) * signature (m [ColorBalanceChannel]), MonadIO m, IsColorBalance a) => MethodInfo * ColorBalanceListChannelsMethodInfo a signature

Methods

overloadedMethod :: MethodProxy ColorBalanceListChannelsMethodInfo a -> signature -> s

colorBalanceListChannels

Arguments

:: (HasCallStack, MonadIO m, IsColorBalance a)

=> a

balance: A ColorBalance instance

-> m [ColorBalanceChannel]

Returns: A GList containing pointers to ColorBalanceChannel objects. The list is owned by the ColorBalance instance and must not be freed.

Retrieve a list of the available channels.

setValue

data ColorBalanceSetValueMethodInfo

Instances

((~) * signature (b -> Int32 -> m ()), MonadIO m, IsColorBalance a, IsColorBalanceChannel b) => MethodInfo * ColorBalanceSetValueMethodInfo a signature

Methods

overloadedMethod :: MethodProxy ColorBalanceSetValueMethodInfo a -> signature -> s

colorBalanceSetValue

Arguments

:: (HasCallStack, MonadIO m, IsColorBalance a, IsColorBalanceChannel b)

=> a

balance: A ColorBalance instance

-> b

channel: A ColorBalanceChannel instance

-> Int32

value: The new value for the channel.

-> m ()

Sets the current value of the channel to the passed value, which must be between min_value and max_value.

See Also: The ColorBalanceChannel.min_value and ColorBalanceChannel.max_value members of the ColorBalanceChannel object.

valueChanged

data ColorBalanceValueChangedMethodInfo

Instances

((~) * signature (b -> Int32 -> m ()), MonadIO m, IsColorBalance a, IsColorBalanceChannel b) => MethodInfo * ColorBalanceValueChangedMethodInfo a signature

Methods

overloadedMethod :: MethodProxy ColorBalanceValueChangedMethodInfo a -> signature -> s

colorBalanceValueChanged

Arguments

:: (HasCallStack, MonadIO m, IsColorBalance a, IsColorBalanceChannel b)

=> a

balance: A ColorBalance instance

-> b

channel: A ColorBalanceChannel whose value has changed

-> Int32

value: The new value of the channel

-> m ()

A helper function called by implementations of the GstColorBalance interface. It fires the ColorBalance::value-changed signal on the instance, and the ColorBalanceChannel::value-changed signal on the channel object.

Signals

valueChanged

type C_ColorBalanceValueChangedCallback = Ptr () -> Ptr ColorBalanceChannel -> Int32 -> Ptr () -> IO ()

type ColorBalanceValueChangedCallback = ColorBalanceChannel -> Int32 -> IO ()

data ColorBalanceValueChangedSignalInfo

Instances

SignalInfo ColorBalanceValueChangedSignalInfo

Associated Types

type HaskellCallbackType ColorBalanceValueChangedSignalInfo :: *

Methods

connectSignal :: GObject o => SignalProxy o ColorBalanceValueChangedSignalInfo -> o -> HaskellCallbackType ColorBalanceValueChangedSignalInfo -> SignalConnectMode -> IO SignalHandlerId

type HaskellCallbackType ColorBalanceValueChangedSignalInfo

type HaskellCallbackType ColorBalanceValueChangedSignalInfo = ColorBalanceValueChangedCallback

afterColorBalanceValueChanged :: (IsColorBalance a, MonadIO m) => a -> ColorBalanceValueChangedCallback -> m SignalHandlerId

genClosure_ColorBalanceValueChanged :: ColorBalanceValueChangedCallback -> IO Closure

mk_ColorBalanceValueChangedCallback :: C_ColorBalanceValueChangedCallback -> IO (FunPtr C_ColorBalanceValueChangedCallback)

noColorBalanceValueChangedCallback :: Maybe ColorBalanceValueChangedCallback

onColorBalanceValueChanged :: (IsColorBalance a, MonadIO m) => a -> ColorBalanceValueChangedCallback -> m SignalHandlerId

wrap_ColorBalanceValueChangedCallback :: ColorBalanceValueChangedCallback -> Ptr () -> Ptr ColorBalanceChannel -> Int32 -> Ptr () -> IO ()