GstCodecs.Vp8Decoder¶

Subclasses:: None

Methods¶

Inherited:: GstVideo.VideoDecoder (43), Gst.Element (82), Gst.Object (27), GObject.Object (37)
Structs:: Gst.ElementClass (10), GObject.ObjectClass (5)

Virtual Methods¶

Inherited:: GstVideo.VideoDecoder (21), Gst.Element (16), Gst.Object (1), GObject.Object (7)

	`do_end_picture` (picture)
	`do_get_preferred_output_delay` (is_live)
	`do_new_picture` (frame, picture)
	`do_output_picture` (frame, picture)
	`do_start_picture` (picture)

Properties¶

Inherited:: GstVideo.VideoDecoder (6), Gst.Object (2)

Signals¶

Inherited:: Gst.Element (3), Gst.Object (1), GObject.Object (1)

Fields¶

Inherited:: Gst.Element (3), Gst.Object (1), GObject.Object (1)

Name	Type	Access
alt_ref_picture	`GstCodecs.Vp8Picture`	r
golden_ref_picture	`GstCodecs.Vp8Picture`	r
input_state	`GstVideo.VideoCodecState`	r
last_picture	`GstCodecs.Vp8Picture`	r
padding	[`object`]	r
parent	`GstVideo.VideoDecoder`	r

Class Details¶

class GstCodecs.Vp8Decoder(**kwargs)¶

Bases:: GstVideo.VideoDecoder
Abstract:: Yes
Structure:: GstCodecs.Vp8DecoderClass

The opaque GstCodecs.Vp8Decoder data structure.

do_end_picture(picture) virtual¶

Parameters:: picture (GstCodecs.Vp8Picture) –
Return type:: Gst.FlowReturn

Optional. Called per one GstCodecs.Vp8Picture to notify subclass to finish decoding process for the GstCodecs.Vp8Picture

do_get_preferred_output_delay(is_live) virtual¶

Parameters:: is_live (bool) – whether upstream is live or not
Returns:: the number of perferred delayed output frame
Return type:: int

Optional. Called by baseclass to query whether delaying output is preferred by subclass or not.

New in version 1.20.

do_new_picture(frame, picture) virtual¶

Parameters:

frame (GstVideo.VideoCodecFrame) –
picture (GstCodecs.Vp8Picture) –

Return type:

Gst.FlowReturn

Optional. Called whenever new GstCodecs.Vp8Picture is created. Subclass can set implementation specific user data on the GstCodecs.Vp8Picture via gst_vp8_picture_set_user_data

do_output_picture(frame, picture) virtual¶

Parameters:

frame (GstVideo.VideoCodecFrame) –
picture (GstCodecs.Vp8Picture) –

Return type:

Gst.FlowReturn

Called with a GstCodecs.Vp8Picture which is required to be outputted. Subclass can retrieve parent GstVideo.VideoCodecFrame by using GstVideo.VideoDecoder.get_frame() with system_frame_number and the GstVideo.VideoCodecFrame must be consumed by subclass via gst_video_decoder_{finish,drop,release}_frame().

do_start_picture(picture) virtual¶

Parameters:: picture (GstCodecs.Vp8Picture) –
Return type:: Gst.FlowReturn

Optional. Called per one GstCodecs.Vp8Picture to notify subclass to prepare decoding process for the GstCodecs.Vp8Picture