GstCodecs.H265Dpb¶

Fields¶

None

Methods¶

	`add` (picture)
	`bump` (drain)
	`clear` ()
	`delete_unused` ()
	`free` ()
	`get_long_ref_by_poc` (poc)
	`get_max_num_pics` ()
	`get_picture` (system_frame_number)
	`get_pictures_all` ()
	`get_ref_by_poc` (poc)
	`get_ref_by_poc_lsb` (poc_lsb)
	`get_short_ref_by_poc` (poc)
	`get_size` ()
	`mark_all_non_ref` ()
	`needs_bump` (max_num_reorder_pics, max_latency_increase, max_dec_pic_buffering)
	`num_ref_pictures` ()
	`set_max_num_pics` (max_num_pics)

Details¶

class GstCodecs.H265Dpb¶

add(picture)¶

Parameters:: picture (GstCodecs.H265Picture) – a GstCodecs.H265Picture

Store the picture and perform increase pic_latency_cnt as defined in “C.5.2.3 Additional bumping” process

bump(drain)¶

Parameters:: drain (bool) – whether draining or not
Returns:: a GstCodecs.H265Picture which is needed to be outputted
Return type:: GstCodecs.H265Picture or None

Perform bumping process as defined in C.5.2.4 “Bumping” process. If drain is True, self will remove a GstCodecs.H265Picture from internal array so that returned GstCodecs.H265Picture could hold the last reference of it

New in version 1.20.

clear()¶: Clear all stored GstCodecs.H265Picture

delete_unused()¶: Delete not needed for output and not referenced all pictures from dpb

free()¶: Free the self

get_long_ref_by_poc(poc)¶

Parameters:: poc (int) – a picture order count
Returns:: a GstCodecs.H265Picture
Return type:: GstCodecs.H265Picture or None

Find a long term reference picture which has matching poc

get_max_num_pics()¶

Returns:: the number of maximum pictures
Return type:: int

get_picture(system_frame_number)¶

Parameters:: system_frame_number (int) –
Returns:: the picture identified with the specified system_frame_number, or None if DPB does not contain a GstCodecs.H265Picture corresponding to the system_frame_number
Return type:: GstCodecs.H265Picture or None

New in version 1.20.

get_pictures_all()¶

Returns:: a GLib.Array of GstCodecs.H265Picture stored in self
Return type:: [GstCodecs.H265Picture]

get_ref_by_poc(poc)¶

Parameters:: poc (int) – a picture order count
Returns:: a GstCodecs.H265Picture
Return type:: GstCodecs.H265Picture or None

Find a short or long term reference picture which has matching poc

get_ref_by_poc_lsb(poc_lsb)¶

Parameters:: poc_lsb (int) – a picture order count lsb
Returns:: a GstCodecs.H265Picture
Return type:: GstCodecs.H265Picture or None

Find a short or long term reference picture which has matching poc_lsb

get_short_ref_by_poc(poc)¶

Parameters:: poc (int) – a picture order count
Returns:: a GstCodecs.H265Picture
Return type:: GstCodecs.H265Picture or None

Find a short term reference picture which has matching poc

get_size()¶

Returns:: the length of stored dpb array
Return type:: int

mark_all_non_ref()¶: Mark all pictures are not referenced

needs_bump(max_num_reorder_pics, max_latency_increase, max_dec_pic_buffering)¶

Parameters:

max_num_reorder_pics (int) – sps_max_num_reorder_pics[HighestTid]
max_latency_increase (int) – SpsMaxLatencyPictures[HighestTid]
max_dec_pic_buffering (int) – sps_max_dec_pic_buffering_minus1[HighestTid ] + 1 or zero if this shouldn’t be used for bumping decision

Returns:

True if bumping is required

Return type:

bool

New in version 1.20.

num_ref_pictures()¶

Returns:: The number of referenced pictures
Return type:: int

set_max_num_pics(max_num_pics)¶

Parameters:: max_num_pics (int) – the maximum number of picture

Set the number of maximum allowed pictures to store