Gstav1Decoder

picture ( [transfer: none]) –

tile ( [transfer: none]) –

a GstAV1Tile

Returns –

No description available

Since : 1.20

vfunc_decode_tile

function vfunc_decode_tile(decoder: GstCodecs.AV1Decoder, picture: GstCodecs.AV1Picture, tile: GstCodecs.AV1Tile): {
    // javascript implementation of the 'decode_tile' virtual method
}

Provides the tile data with tile group header and required raw bitstream for subclass to decode it.

Parameters:

decoder (GstCodecs.AV1Decoder) –

picture (GstCodecs.AV1Picture) –

tile (GstCodecs.AV1Tile) –

a GstCodecs.AV1Tile

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

do_decode_tile

def do_decode_tile (decoder, picture, tile):
    #python implementation of the 'decode_tile' virtual method

Provides the tile data with tile group header and required raw bitstream for subclass to decode it.

Parameters:

decoder (GstCodecs.AV1Decoder) –

picture (GstCodecs.AV1Picture) –

tile (GstCodecs.AV1Tile) –

a GstCodecs.AV1Tile

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

duplicate_picture

GstAV1Picture *
duplicate_picture (GstAV1Decoder * decoder,
                   GstVideoCodecFrame * frame,
                   GstAV1Picture * picture)

Called when need to duplicate an existing GstAV1Picture. As duplicated key-frame will populate the DPB, this virtual function is not optional.

Parameters:

decoder –

frame ( [transfer: none]) –

the current GstVideoCodecFrame

picture ( [transfer: none]) –

Returns –

No description available

Since : 1.22

vfunc_duplicate_picture

function vfunc_duplicate_picture(decoder: GstCodecs.AV1Decoder, frame: GstVideo.VideoCodecFrame, picture: GstCodecs.AV1Picture): {
    // javascript implementation of the 'duplicate_picture' virtual method
}

Called when need to duplicate an existing GstCodecs.AV1Picture. As duplicated key-frame will populate the DPB, this virtual function is not optional.

Parameters:

decoder (GstCodecs.AV1Decoder) –

frame (GstVideo.VideoCodecFrame) –

the current GstVideo.VideoCodecFrame

picture (GstCodecs.AV1Picture) –

Returns (GstCodecs.AV1Picture) –

No description available

Since : 1.22

do_duplicate_picture

def do_duplicate_picture (decoder, frame, picture):
    #python implementation of the 'duplicate_picture' virtual method

Called when need to duplicate an existing GstCodecs.AV1Picture. As duplicated key-frame will populate the DPB, this virtual function is not optional.

Parameters:

decoder (GstCodecs.AV1Decoder) –

frame (GstVideo.VideoCodecFrame) –

the current GstVideo.VideoCodecFrame

picture (GstCodecs.AV1Picture) –

Returns (GstCodecs.AV1Picture) –

No description available

Since : 1.22

end_picture

GstFlowReturn
end_picture (GstAV1Decoder * decoder,
             GstAV1Picture * picture)

Optional. Called per one GstAV1Picture to notify subclass to finish decoding process for the GstAV1Picture

Parameters:

decoder –

picture ( [transfer: none]) –

Returns –

No description available

Since : 1.20

vfunc_end_picture

function vfunc_end_picture(decoder: GstCodecs.AV1Decoder, picture: GstCodecs.AV1Picture): {
    // javascript implementation of the 'end_picture' virtual method
}

Optional. Called per one GstCodecs.AV1Picture to notify subclass to finish decoding process for the GstCodecs.AV1Picture

Parameters:

decoder (GstCodecs.AV1Decoder) –

picture (GstCodecs.AV1Picture) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

do_end_picture

def do_end_picture (decoder, picture):
    #python implementation of the 'end_picture' virtual method

Optional. Called per one GstCodecs.AV1Picture to notify subclass to finish decoding process for the GstCodecs.AV1Picture

Parameters:

decoder (GstCodecs.AV1Decoder) –

picture (GstCodecs.AV1Picture) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

get_preferred_output_delay

guint
get_preferred_output_delay (GstAV1Decoder * decoder,
                            gboolean live)

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

Parameters:

decoder –

live –

whether upstream is live or not

Returns –

the number of perferred delayed output frame

Since : 1.22

vfunc_get_preferred_output_delay

function vfunc_get_preferred_output_delay(decoder: GstCodecs.AV1Decoder, live: Number): {
    // javascript implementation of the 'get_preferred_output_delay' virtual method
}

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

Parameters:

decoder (GstCodecs.AV1Decoder) –

live (Number) –

whether upstream is live or not

Returns (Number) –

the number of perferred delayed output frame

Since : 1.22

do_get_preferred_output_delay

def do_get_preferred_output_delay (decoder, live):
    #python implementation of the 'get_preferred_output_delay' virtual method

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

Parameters:

decoder (GstCodecs.AV1Decoder) –

live (bool) –

whether upstream is live or not

Returns (int) –

the number of perferred delayed output frame

Since : 1.22

new_picture

GstFlowReturn
new_picture (GstAV1Decoder * decoder,
             GstVideoCodecFrame * frame,
             GstAV1Picture * picture)

Optional. Called whenever new GstAV1Picture is created. Subclass can set implementation specific user data on the GstAV1Picture via gst_av1_picture_set_user_data

Parameters:

decoder –

frame ( [transfer: none]) –

a GstVideoCodecFrame

picture ( [transfer: none]) –

Returns –

No description available

Since : 1.20

vfunc_new_picture

function vfunc_new_picture(decoder: GstCodecs.AV1Decoder, frame: GstVideo.VideoCodecFrame, picture: GstCodecs.AV1Picture): {
    // javascript implementation of the 'new_picture' virtual method
}

Optional. Called whenever new GstCodecs.AV1Picture is created. Subclass can set implementation specific user data on the GstCodecs.AV1Picture via gst_av1_picture_set_user_data

Parameters:

decoder (GstCodecs.AV1Decoder) –

frame (GstVideo.VideoCodecFrame) –

picture (GstCodecs.AV1Picture) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

do_new_picture

def do_new_picture (decoder, frame, picture):
    #python implementation of the 'new_picture' virtual method

Optional. Called whenever new GstCodecs.AV1Picture is created. Subclass can set implementation specific user data on the GstCodecs.AV1Picture via gst_av1_picture_set_user_data

Parameters:

decoder (GstCodecs.AV1Decoder) –

frame (GstVideo.VideoCodecFrame) –

picture (GstCodecs.AV1Picture) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

new_sequence

GstFlowReturn
new_sequence (GstAV1Decoder * decoder,
              const GstAV1SequenceHeaderOBU * seq_hdr,
              gint max_dpb_size)

Notifies subclass of SPS update

Parameters:

decoder –

a GstAV1SequenceHeaderOBU

seq_hdr –

max_dpb_size –

the size of dpb including preferred output delay by subclass reported via get_preferred_output_delay method.

Returns –

No description available

Since : 1.20

output_picture

GstFlowReturn
output_picture (GstAV1Decoder * decoder,
                GstVideoCodecFrame * frame,
                GstAV1Picture * picture)

Called with a GstAV1Picture which is required to be outputted. The GstVideoCodecFrame must be consumed by subclass.

Parameters:

decoder –

frame ( [transfer: full]) –

a GstVideoCodecFrame

picture ( [transfer: full]) –

Returns –

No description available

Since : 1.20

vfunc_output_picture

function vfunc_output_picture(decoder: GstCodecs.AV1Decoder, frame: GstVideo.VideoCodecFrame, picture: GstCodecs.AV1Picture): {
    // javascript implementation of the 'output_picture' virtual method
}

Called with a GstCodecs.AV1Picture which is required to be outputted. The GstVideo.VideoCodecFrame must be consumed by subclass.

Parameters:

decoder (GstCodecs.AV1Decoder) –

frame (GstVideo.VideoCodecFrame) –

picture (GstCodecs.AV1Picture) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

do_output_picture

def do_output_picture (decoder, frame, picture):
    #python implementation of the 'output_picture' virtual method

Called with a GstCodecs.AV1Picture which is required to be outputted. The GstVideo.VideoCodecFrame must be consumed by subclass.

Parameters:

decoder (GstCodecs.AV1Decoder) –

frame (GstVideo.VideoCodecFrame) –

picture (GstCodecs.AV1Picture) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

start_picture

GstFlowReturn
start_picture (GstAV1Decoder * decoder,
               GstAV1Picture * picture,
               GstAV1Dpb * dpb)

Optional. Called per one GstAV1Picture to notify subclass to prepare decoding process for the GstAV1Picture

Parameters:

decoder –

picture ( [transfer: none]) –

dpb ( [transfer: none]) –

a GstAV1Dpb

Returns –

No description available

Since : 1.20

vfunc_start_picture

function vfunc_start_picture(decoder: GstCodecs.AV1Decoder, picture: GstCodecs.AV1Picture, dpb: GstCodecs.AV1Dpb): {
    // javascript implementation of the 'start_picture' virtual method
}

Optional. Called per one GstCodecs.AV1Picture to notify subclass to prepare decoding process for the GstCodecs.AV1Picture

Parameters:

decoder (GstCodecs.AV1Decoder) –

picture (GstCodecs.AV1Picture) –

dpb (GstCodecs.AV1Dpb) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

do_start_picture

def do_start_picture (decoder, picture, dpb):
    #python implementation of the 'start_picture' virtual method

Optional. Called per one GstCodecs.AV1Picture to notify subclass to prepare decoding process for the GstCodecs.AV1Picture

Parameters:

decoder (GstCodecs.AV1Decoder) –

picture (GstCodecs.AV1Picture) –

dpb (GstCodecs.AV1Dpb) –

Returns (Gst.FlowReturn) –

No description available

Since : 1.20

GstAV1Dpb

Members

pic_list (GstAV1Picture *) –

No description available

Since : 1.20

Methods

gst_av1_dpb_add

gst_av1_dpb_add (GstAV1Dpb * dpb,
                 GstAV1Picture * picture)

Store the picture

Parameters:

dpb –

a GstAV1Dpb

picture ( [transfer: full]) –

Since : 1.20

GstCodecs.AV1Dpb.prototype.add

function GstCodecs.AV1Dpb.prototype.add(picture: GstCodecs.AV1Picture): {
    // javascript wrapper for 'gst_av1_dpb_add'
}

Store the picture

Parameters:

dpb (GstCodecs.AV1Dpb) –

picture (GstCodecs.AV1Picture) –

Since : 1.20

GstCodecs.AV1Dpb.add

def GstCodecs.AV1Dpb.add (self, picture):
    #python wrapper for 'gst_av1_dpb_add'

Store the picture

Parameters:

dpb (GstCodecs.AV1Dpb) –

picture (GstCodecs.AV1Picture) –

Since : 1.20

gst_av1_dpb_clear

gst_av1_dpb_clear (GstAV1Dpb * dpb)

Clear all stored GstAV1Picture

Parameters:

dpb –

a GstAV1Dpb

Since : 1.20

GstCodecs.AV1Dpb.prototype.clear

function GstCodecs.AV1Dpb.prototype.clear(): {
    // javascript wrapper for 'gst_av1_dpb_clear'
}

Clear all stored GstCodecs.AV1Picture

Parameters:

dpb (GstCodecs.AV1Dpb) –

Since : 1.20

GstCodecs.AV1Dpb.clear

def GstCodecs.AV1Dpb.clear (self):
    #python wrapper for 'gst_av1_dpb_clear'

Clear all stored GstCodecs.AV1Picture

Parameters:

dpb (GstCodecs.AV1Dpb) –