GstVideoFilter

Provides useful functions and a base class for video filters.

The videofilter will by default enable QoS on the parent GstBaseTransform to implement frame dropping.

GstVideoFilter

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBaseTransform
                    ╰──GstVideoFilter

Members

element (GstBaseTransform) –

No description available

negotiated (gboolean) –

No description available

in_info (GstVideoInfo) –

No description available

out_info (GstVideoInfo) –

No description available

Class structure

GstVideoFilterClass

The video filter class structure.

Fields

parent_class (GstBaseTransformClass) –

the parent class structure

GstVideo.VideoFilterClass

The video filter class structure.

Attributes

parent_class (GstBase.BaseTransformClass) –

the parent class structure

GstVideo.VideoFilterClass

The video filter class structure.

Attributes

parent_class (GstBase.BaseTransformClass) –

the parent class structure

GstVideo.VideoFilter

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Element
                ╰──GstBase.BaseTransform
                    ╰──GstVideo.VideoFilter

Members

element (GstBase.BaseTransform) –

No description available

negotiated (Number) –

No description available

in_info (GstVideo.VideoInfo) –

No description available

out_info (GstVideo.VideoInfo) –

No description available

GstVideo.VideoFilter

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Element
                ╰──GstBase.BaseTransform
                    ╰──GstVideo.VideoFilter

Members

element (GstBase.BaseTransform) –

No description available

negotiated (bool) –

No description available

in_info (GstVideo.VideoInfo) –

No description available

out_info (GstVideo.VideoInfo) –

No description available

Virtual Methods

set_info

gboolean
set_info (GstVideoFilter * filter,
          GstCaps * incaps,
          GstVideoInfo * in_info,
          GstCaps * outcaps,
          GstVideoInfo * out_info)

function to be called with the negotiated caps and video infos

Parameters:

filter –

No description available

incaps –

No description available

in_info –

No description available

outcaps –

No description available

out_info –

No description available

Returns –

No description available

vfunc_set_info

function vfunc_set_info(filter: GstVideo.VideoFilter, incaps: Gst.Caps, in_info: GstVideo.VideoInfo, outcaps: Gst.Caps, out_info: GstVideo.VideoInfo): {
    // javascript implementation of the 'set_info' virtual method
}

function to be called with the negotiated caps and video infos

Parameters:

filter (GstVideo.VideoFilter) –

No description available

incaps (Gst.Caps) –

No description available

in_info (GstVideo.VideoInfo) –

No description available

outcaps (Gst.Caps) –

No description available

out_info (GstVideo.VideoInfo) –

No description available

Returns (Number) –

No description available

do_set_info

def do_set_info (filter, incaps, in_info, outcaps, out_info):
    #python implementation of the 'set_info' virtual method

function to be called with the negotiated caps and video infos

Parameters:

filter (GstVideo.VideoFilter) –

No description available

incaps (Gst.Caps) –

No description available

in_info (GstVideo.VideoInfo) –

No description available

outcaps (Gst.Caps) –

No description available

out_info (GstVideo.VideoInfo) –

No description available

Returns (bool) –

No description available

transform_frame

GstFlowReturn
transform_frame (GstVideoFilter * filter,
                 GstVideoFrame * inframe,
                 GstVideoFrame * outframe)

transform a video frame

Parameters:

filter –

No description available

inframe –

No description available

outframe –

No description available

Returns –

No description available

vfunc_transform_frame

function vfunc_transform_frame(filter: GstVideo.VideoFilter, inframe: GstVideo.VideoFrame, outframe: GstVideo.VideoFrame): {
    // javascript implementation of the 'transform_frame' virtual method
}

transform a video frame

Parameters:

filter (GstVideo.VideoFilter) –

No description available

inframe (GstVideo.VideoFrame) –

No description available

outframe (GstVideo.VideoFrame) –

No description available

Returns (Gst.FlowReturn) –

No description available

do_transform_frame

def do_transform_frame (filter, inframe, outframe):
    #python implementation of the 'transform_frame' virtual method

transform a video frame

Parameters:

filter (GstVideo.VideoFilter) –

No description available

inframe (GstVideo.VideoFrame) –

No description available

outframe (GstVideo.VideoFrame) –

No description available

Returns (Gst.FlowReturn) –

No description available

transform_frame_ip

GstFlowReturn
transform_frame_ip (GstVideoFilter * trans,
                    GstVideoFrame * frame)

transform a video frame in place

Parameters:

trans –

No description available

frame –

No description available

Returns –

No description available

vfunc_transform_frame_ip

function vfunc_transform_frame_ip(trans: GstVideo.VideoFilter, frame: GstVideo.VideoFrame): {
    // javascript implementation of the 'transform_frame_ip' virtual method
}

transform a video frame in place

Parameters:

trans (GstVideo.VideoFilter) –

No description available

frame (GstVideo.VideoFrame) –

No description available

Returns (Gst.FlowReturn) –

No description available

do_transform_frame_ip

def do_transform_frame_ip (trans, frame):
    #python implementation of the 'transform_frame_ip' virtual method

transform a video frame in place

Parameters:

trans (GstVideo.VideoFilter) –

No description available

frame (GstVideo.VideoFrame) –

No description available

Returns (Gst.FlowReturn) –

No description available

Function Macros

GST_VIDEO_FILTER_CAST

#define GST_VIDEO_FILTER_CAST(obj)  ((GstVideoFilter *)(obj))

Constants

GST_TYPE_VIDEO_FILTER

#define GST_TYPE_VIDEO_FILTER \
  (gst_video_filter_get_type())

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