GI.GstVideo.Structs.VideoOverlayComposition

refsect2 para Functions to create and handle overlay compositions on video buffers. /para para An overlay composition describes one or more overlay rectangles to be blended on top of a video buffer. /para para This API serves two main purposes: itemizedlist listitem it can be used to attach overlay information (subtitles or logos) to non-raw video buffers such as GLVAAPIVDPAU surfaces. The actual blending of the overlay can then be done by e.g. the video sink that processes these non-raw buffers. /listitem listitem it can also be used to blend overlay rectangles on top of raw video buffers, thus consolidating blending functionality for raw video in one place. /listitem Together, this allows existing overlay elements to easily handle raw and non-raw video as input in without major changes (once the overlays have been put into a #GstOverlayComposition object anyway) - for raw video the overlay can just use the blending function to blend the data on top of the video, and for surface buffers it can just attach them to the buffer and let the sink render the overlays. /itemizedlist /para /refsect2

Exported types

newtype VideoOverlayComposition

Constructors

VideoOverlayComposition (ForeignPtr VideoOverlayComposition)

Instances

BoxedObject VideoOverlayComposition

((~) * signature (m Word32), MonadIO m) => MethodInfo * VideoOverlayCompositionNRectanglesMethodInfo VideoOverlayComposition signature

((~) * signature (m VideoOverlayComposition), MonadIO m) => MethodInfo * VideoOverlayCompositionMakeWritableMethodInfo VideoOverlayComposition signature

((~) * signature (m Word32), MonadIO m) => MethodInfo * VideoOverlayCompositionGetSeqnumMethodInfo VideoOverlayComposition signature

((~) * signature (Word32 -> m VideoOverlayRectangle), MonadIO m) => MethodInfo * VideoOverlayCompositionGetRectangleMethodInfo VideoOverlayComposition signature

((~) * signature (m VideoOverlayComposition), MonadIO m) => MethodInfo * VideoOverlayCompositionCopyMethodInfo VideoOverlayComposition signature

((~) * signature (VideoFrame -> m Bool), MonadIO m) => MethodInfo * VideoOverlayCompositionBlendMethodInfo VideoOverlayComposition signature

((~) * signature (VideoOverlayRectangle -> m ()), MonadIO m) => MethodInfo * VideoOverlayCompositionAddRectangleMethodInfo VideoOverlayComposition signature

((~) * info (ResolveVideoOverlayCompositionMethod t VideoOverlayComposition), MethodInfo * info VideoOverlayComposition p) => IsLabelProxy t (VideoOverlayComposition -> p)

type AttributeList VideoOverlayComposition

noVideoOverlayComposition :: Maybe VideoOverlayComposition

Methods

videoOverlayCompositionAddRectangle

data VideoOverlayCompositionAddRectangleMethodInfo

Instances

((~) * signature (VideoOverlayRectangle -> m ()), MonadIO m) => MethodInfo * VideoOverlayCompositionAddRectangleMethodInfo VideoOverlayComposition signature

videoOverlayCompositionAddRectangle :: MonadIO m => VideoOverlayComposition -> VideoOverlayRectangle -> m ()

videoOverlayCompositionBlend

data VideoOverlayCompositionBlendMethodInfo

Instances

((~) * signature (VideoFrame -> m Bool), MonadIO m) => MethodInfo * VideoOverlayCompositionBlendMethodInfo VideoOverlayComposition signature

videoOverlayCompositionBlend :: MonadIO m => VideoOverlayComposition -> VideoFrame -> m Bool

videoOverlayCompositionCopy

data VideoOverlayCompositionCopyMethodInfo

Instances

((~) * signature (m VideoOverlayComposition), MonadIO m) => MethodInfo * VideoOverlayCompositionCopyMethodInfo VideoOverlayComposition signature

videoOverlayCompositionCopy :: MonadIO m => VideoOverlayComposition -> m VideoOverlayComposition

videoOverlayCompositionGetRectangle

data VideoOverlayCompositionGetRectangleMethodInfo

Instances

((~) * signature (Word32 -> m VideoOverlayRectangle), MonadIO m) => MethodInfo * VideoOverlayCompositionGetRectangleMethodInfo VideoOverlayComposition signature

videoOverlayCompositionGetRectangle :: MonadIO m => VideoOverlayComposition -> Word32 -> m VideoOverlayRectangle

videoOverlayCompositionGetSeqnum

data VideoOverlayCompositionGetSeqnumMethodInfo

Instances

((~) * signature (m Word32), MonadIO m) => MethodInfo * VideoOverlayCompositionGetSeqnumMethodInfo VideoOverlayComposition signature

videoOverlayCompositionGetSeqnum :: MonadIO m => VideoOverlayComposition -> m Word32

videoOverlayCompositionMakeWritable

data VideoOverlayCompositionMakeWritableMethodInfo

Instances

((~) * signature (m VideoOverlayComposition), MonadIO m) => MethodInfo * VideoOverlayCompositionMakeWritableMethodInfo VideoOverlayComposition signature

videoOverlayCompositionMakeWritable :: MonadIO m => VideoOverlayComposition -> m VideoOverlayComposition

videoOverlayCompositionNRectangles

data VideoOverlayCompositionNRectanglesMethodInfo

Instances

((~) * signature (m Word32), MonadIO m) => MethodInfo * VideoOverlayCompositionNRectanglesMethodInfo VideoOverlayComposition signature

videoOverlayCompositionNRectangles :: MonadIO m => VideoOverlayComposition -> m Word32

videoOverlayCompositionNew

videoOverlayCompositionNew :: MonadIO m => VideoOverlayRectangle -> m VideoOverlayComposition