GstCodecs.Mpeg2Decoder¶

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_decode_slice` (picture, slice)
	`do_end_picture` (picture)
	`do_get_preferred_output_delay` (is_live)
	`do_new_field_picture` (first_field, second_field)
	`do_new_picture` (frame, picture)
	`do_output_picture` (frame, picture)
	`do_start_picture` (picture, slice, prev_picture, next_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
input_state	`GstVideo.VideoCodecState`	r
padding	[`object`]	r
parent	`GstVideo.VideoDecoder`	r

Class Details¶

class GstCodecs.Mpeg2Decoder(**kwargs)¶

Bases:: GstVideo.VideoDecoder
Abstract:: Yes
Structure:: GstCodecs.Mpeg2DecoderClass

The opaque GstCodecs.Mpeg2Decoder data structure.

New in version 1.20.

do_decode_slice(picture, slice) virtual¶

Parameters:

picture (GstCodecs.Mpeg2Picture) – a GstCodecs.Mpeg2Picture
slice (GstCodecs.Mpeg2Slice) – a GstCodecs.Mpeg2Slice

Return type:

Gst.FlowReturn

Provides per slice data with parsed slice header and required raw bitstream for subclass to decode it.

New in version 1.20.

do_end_picture(picture) virtual¶

Parameters:: picture (GstCodecs.Mpeg2Picture) – a GstCodecs.Mpeg2Picture
Return type:: Gst.FlowReturn

Optional. Called per one GstCodecs.Mpeg2Picture to notify subclass to finish decoding process for the GstCodecs.Mpeg2Picture

New in version 1.20.

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 frames
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_field_picture(first_field, second_field) virtual¶

Parameters:

first_field (GstCodecs.Mpeg2Picture) – the first field GstCodecs.Mpeg2Picture already decoded
second_field (GstCodecs.Mpeg2Picture) – a GstCodecs.Mpeg2Picture for the second field

Return type:

Gst.FlowReturn

Called when a new field picture is created for interlaced field picture. Subclass can attach implementation specific user data on second_field via gst_mpeg2_picture_set_user_data

New in version 1.20.

do_new_picture(frame, picture) virtual¶

Parameters:

frame (GstVideo.VideoCodecFrame) – a GstVideo.VideoCodecFrame
picture (GstCodecs.Mpeg2Picture) – a GstCodecs.Mpeg2Picture

Return type:

Gst.FlowReturn

Optional. Called whenever new GstCodecs.Mpeg2Picture is created. Subclass can set implementation specific user data on the GstCodecs.Mpeg2Picture via gst_mpeg2_picture_set_user_data

New in version 1.20.

do_output_picture(frame, picture) virtual¶

Parameters: