GI.GstVideo.Structs.VideoMeta

Extra buffer metadata describing image properties

Exported types

newtype VideoMeta

Constructors

VideoMeta (ManagedPtr VideoMeta)

Instances

WrappedPtr VideoMeta

Methods

wrappedPtrCalloc :: IO (Ptr VideoMeta)

wrappedPtrCopy :: VideoMeta -> IO VideoMeta

wrappedPtrFree :: Maybe (FunPtr (Ptr VideoMeta -> IO ()))

(~) AttrOpTag tag AttrSet => Constructible VideoMeta tag

Methods

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

newZeroVideoMeta :: MonadIO m => m VideoMeta

Construct a VideoMeta struct initialized to zero.

noVideoMeta :: Maybe VideoMeta

Methods

getInfo

videoMetaGetInfo :: (HasCallStack, MonadIO m) => m MetaInfo

No description available in the introspection data.

map

videoMetaMap

Arguments

:: (HasCallStack, MonadIO m)

=> VideoMeta

meta: a VideoMeta

-> Word32

plane: a plane

-> MapInfo

info: a MapInfo

-> Ptr ()

data: the data of plane

-> Int32

stride: the stride of plane

-> [MapFlags]

flags: gstMapFlags

-> m Bool

Returns: TRUE if the map operation was successful.

Map the video plane with index plane in meta and return a pointer to the first byte of the plane and the stride of the plane.

unmap

videoMetaUnmap

Arguments

:: (HasCallStack, MonadIO m)

=> VideoMeta

meta: a VideoMeta

-> Word32

plane: a plane

-> MapInfo

info: a MapInfo

-> m Bool

Returns: TRUE if the memory was successfully unmapped.

Unmap a previously mapped plane with videoMetaMap.

Properties

buffer

clearVideoMetaBuffer :: MonadIO m => VideoMeta -> m ()

getVideoMetaBuffer :: MonadIO m => VideoMeta -> m (Maybe Buffer)

setVideoMetaBuffer :: MonadIO m => VideoMeta -> Ptr Buffer -> m ()

flags

getVideoMetaFlags :: MonadIO m => VideoMeta -> m [VideoFrameFlags]

setVideoMetaFlags :: MonadIO m => VideoMeta -> [VideoFrameFlags] -> m ()

format

getVideoMetaFormat :: MonadIO m => VideoMeta -> m VideoFormat

setVideoMetaFormat :: MonadIO m => VideoMeta -> VideoFormat -> m ()

height

getVideoMetaHeight :: MonadIO m => VideoMeta -> m Word32

setVideoMetaHeight :: MonadIO m => VideoMeta -> Word32 -> m ()

id

getVideoMetaId :: MonadIO m => VideoMeta -> m Int32

setVideoMetaId :: MonadIO m => VideoMeta -> Int32 -> m ()

map

clearVideoMetaMap :: MonadIO m => VideoMeta -> m ()

getVideoMetaMap :: MonadIO m => VideoMeta -> m (Maybe VideoMetaMapFieldCallback)

setVideoMetaMap :: MonadIO m => VideoMeta -> FunPtr C_VideoMetaMapFieldCallback -> m ()

meta

getVideoMetaMeta :: MonadIO m => VideoMeta -> m Meta

nPlanes

getVideoMetaNPlanes :: MonadIO m => VideoMeta -> m Word32

setVideoMetaNPlanes :: MonadIO m => VideoMeta -> Word32 -> m ()

unmap

clearVideoMetaUnmap :: MonadIO m => VideoMeta -> m ()

getVideoMetaUnmap :: MonadIO m => VideoMeta -> m (Maybe VideoMetaUnmapFieldCallback)

setVideoMetaUnmap :: MonadIO m => VideoMeta -> FunPtr C_VideoMetaUnmapFieldCallback -> m ()

width

getVideoMetaWidth :: MonadIO m => VideoMeta -> m Word32

setVideoMetaWidth :: MonadIO m => VideoMeta -> Word32 -> m ()