Gstvp9Decoder

GstCodecs.Vp9Decoder

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Element
                ╰──GstVideo.VideoDecoder
                    ╰──GstCodecs.Vp9Decoder

GstCodecs.Vp9Decoder.prototype.set_non_keyframe_format_change_support

function GstCodecs.Vp9Decoder.prototype.set_non_keyframe_format_change_support(support: Number): {
    // javascript wrapper for 'gst_vp9_decoder_set_non_keyframe_format_change_support'
}

Called to set non-keyframe format change awareness

Since : 1.20

vfunc_decode_picture

function vfunc_decode_picture(decoder: GstCodecs.Vp9Decoder, picture: GstCodecs.Vp9Picture, dpb: GstCodecs.Vp9Dpb): {
    // javascript implementation of the 'decode_picture' virtual method
}

Called to notify decoding for subclass to decoder given picture with given dpb

Since : 1.18

vfunc_duplicate_picture

function vfunc_duplicate_picture(decoder: GstCodecs.Vp9Decoder, frame: GstVideo.VideoCodecFrame, picture: GstCodecs.Vp9Picture): {
    // javascript implementation of the 'duplicate_picture' virtual method
}

Optional. Called to duplicate picture when show_existing_frame flag is set in the parsed vp9 frame header. Returned GstCodecs.Vp9Picture from this method should hold already decoded picture data corresponding to the picture, since the returned GstCodecs.Vp9Picture from this method will be passed to the output_picture method immediately without additional decoding process.

If this method is not implemented by subclass, baseclass will drop current GstVideo.VideoCodecFrame without additional processing for the current frame.

Since : 1.18

vfunc_end_picture

function vfunc_end_picture(decoder: GstCodecs.Vp9Decoder, picture: GstCodecs.Vp9Picture): {
    // javascript implementation of the 'end_picture' virtual method
}

Optional. Called per one GstCodecs.Vp9Picture to notify subclass to finish decoding process for the GstCodecs.Vp9Picture

Since : 1.18

vfunc_get_preferred_output_delay

function vfunc_get_preferred_output_delay(decoder: GstCodecs.Vp9Decoder, is_live: Number): {
    // javascript implementation of the 'get_preferred_output_delay' virtual method
}

Optional. Retrieve the preferred output delay from child classes. controls how many frames to delay when calling GstVp9DecoderClass::output_picture

Since : 1.20

vfunc_new_picture

function vfunc_new_picture(decoder: GstCodecs.Vp9Decoder, frame: GstVideo.VideoCodecFrame, picture: GstCodecs.Vp9Picture): {
    // javascript implementation of the 'new_picture' virtual method
}

Optional. Called whenever new GstCodecs.Vp9Picture is created. Subclass can set implementation specific user data on the GstCodecs.Vp9Picture via gst_vp9_picture_set_user_data

Since : 1.18

vfunc_new_sequence

function vfunc_new_sequence(decoder: GstCodecs.Vp9Decoder, frame_hdr: GstCodecs.Vp9FrameHeader, max_dpb_size: Number): {
    // javascript implementation of the 'new_sequence' virtual method
}

Notifies subclass of video sequence update such as resolution, bitdepth, profile.

Since : 1.18

vfunc_output_picture

function vfunc_output_picture(decoder: GstCodecs.Vp9Decoder, frame: GstVideo.VideoCodecFrame, picture: GstCodecs.Vp9Picture): {
    // javascript implementation of the 'output_picture' virtual method
}

Called to notify picture is ready to be outputted.

Since : 1.18

vfunc_start_picture

function vfunc_start_picture(decoder: GstCodecs.Vp9Decoder, picture: GstCodecs.Vp9Picture): {
    // javascript implementation of the 'start_picture' virtual method
}

Optional. Called to notify subclass to prepare decoding process for picture

Since : 1.18

GstCodecs.Vp9Dpb

GstCodecs.Vp9Dpb.prototype.add

function GstCodecs.Vp9Dpb.prototype.add(picture: GstCodecs.Vp9Picture): {
    // javascript wrapper for 'gst_vp9_dpb_add'
}

Store the picture

GstCodecs.Vp9Dpb.prototype.clear

function GstCodecs.Vp9Dpb.prototype.clear(): {
    // javascript wrapper for 'gst_vp9_dpb_clear'
}

Clear all stored GstCodecs.Vp9Picture

GstCodecs.Vp9Dpb.prototype.free

function GstCodecs.Vp9Dpb.prototype.free(): {
    // javascript wrapper for 'gst_vp9_dpb_free'
}

Free the dpb

GstCodecs.Vp9Picture

GstCodecs.Vp9Picture.prototype.new

function GstCodecs.Vp9Picture.prototype.new(): {
    // javascript wrapper for 'gst_vp9_picture_new'
}

Create new GstCodecs.Vp9Picture