GI.Gst.Structs.MetaInfo

The MetaInfo provides information about a specific metadata structure.

Exported types

newtype MetaInfo

Memory-managed wrapper type.

Constructors

MetaInfo (ManagedPtr MetaInfo)

Instances

WrappedPtr MetaInfo

Defined in GI.Gst.Structs.MetaInfo

Methods

wrappedPtrCalloc :: IO (Ptr MetaInfo)

wrappedPtrCopy :: MetaInfo -> IO MetaInfo

wrappedPtrFree :: Maybe (GDestroyNotify MetaInfo)

tag ~ AttrSet => Constructible MetaInfo tag

Defined in GI.Gst.Structs.MetaInfo

Methods

new :: MonadIO m => (ManagedPtr MetaInfo -> MetaInfo) -> [AttrOp MetaInfo tag] -> m MetaInfo

newZeroMetaInfo :: MonadIO m => m MetaInfo

Construct a MetaInfo struct initialized to zero.

noMetaInfo :: Maybe MetaInfo

A convenience alias for Nothing :: Maybe MetaInfo.

Properties

api

tag identifying the metadata structure and api

getMetaInfoApi :: MonadIO m => MetaInfo -> m GType

Get the value of the “api” field. When overloading is enabled, this is equivalent to

get metaInfo #api

setMetaInfoApi :: MonadIO m => MetaInfo -> GType -> m ()

Set the value of the “api” field. When overloading is enabled, this is equivalent to

set metaInfo [ #api := value ]

freeFunc

function for freeing the metadata

clearMetaInfoFreeFunc :: MonadIO m => MetaInfo -> m ()

Set the value of the “free_func” field to Nothing. When overloading is enabled, this is equivalent to

clear #freeFunc

getMetaInfoFreeFunc :: MonadIO m => MetaInfo -> m (Maybe MetaFreeFunction)

Get the value of the “free_func” field. When overloading is enabled, this is equivalent to

get metaInfo #freeFunc

setMetaInfoFreeFunc :: MonadIO m => MetaInfo -> FunPtr C_MetaFreeFunction -> m ()

Set the value of the “free_func” field. When overloading is enabled, this is equivalent to

set metaInfo [ #freeFunc := value ]

initFunc

function for initializing the metadata

clearMetaInfoInitFunc :: MonadIO m => MetaInfo -> m ()

Set the value of the “init_func” field to Nothing. When overloading is enabled, this is equivalent to

clear #initFunc

getMetaInfoInitFunc :: MonadIO m => MetaInfo -> m (Maybe MetaInitFunction)

Get the value of the “init_func” field. When overloading is enabled, this is equivalent to

get metaInfo #initFunc

setMetaInfoInitFunc :: MonadIO m => MetaInfo -> FunPtr C_MetaInitFunction -> m ()

Set the value of the “init_func” field. When overloading is enabled, this is equivalent to

set metaInfo [ #initFunc := value ]

size

size of the metadata

getMetaInfoSize :: MonadIO m => MetaInfo -> m Word64

Get the value of the “size” field. When overloading is enabled, this is equivalent to

get metaInfo #size

setMetaInfoSize :: MonadIO m => MetaInfo -> Word64 -> m ()

Set the value of the “size” field. When overloading is enabled, this is equivalent to

set metaInfo [ #size := value ]

transformFunc

function for transforming the metadata

clearMetaInfoTransformFunc :: MonadIO m => MetaInfo -> m ()

Set the value of the “transform_func” field to Nothing. When overloading is enabled, this is equivalent to

clear #transformFunc

getMetaInfoTransformFunc :: MonadIO m => MetaInfo -> m (Maybe MetaTransformFunction)

Get the value of the “transform_func” field. When overloading is enabled, this is equivalent to

get metaInfo #transformFunc

setMetaInfoTransformFunc :: MonadIO m => MetaInfo -> FunPtr C_MetaTransformFunction -> m ()

Set the value of the “transform_func” field. When overloading is enabled, this is equivalent to

set metaInfo [ #transformFunc := value ]

type

type identifying the implementor of the api

getMetaInfoType :: MonadIO m => MetaInfo -> m GType

Get the value of the “type” field. When overloading is enabled, this is equivalent to

get metaInfo #type

setMetaInfoType :: MonadIO m => MetaInfo -> GType -> m ()

Set the value of the “type” field. When overloading is enabled, this is equivalent to

set metaInfo [ #type := value ]