GstBase.BaseParseClass

Fields

Name	Type	Access	Description
convert	object	r	Optional. Convert between formats.
detect	object	r	Optional. Called until it doesn’t return Gst.FlowReturn.OK anymore for the first buffers. Can be used by the subclass to detect the stream format.
get_sink_caps	object	r	Optional. Allows the subclass to do its own sink get caps if needed.
handle_frame	object	r	Parses the input data into valid frames as defined by subclass which should be passed to GstBase.BaseParse.finish_frame(). The frame’s input buffer is guaranteed writable, whereas the input frame ownership is held by caller (so subclass should make a copy if it needs to hang on). Input buffer (data) is provided by baseclass with as much metadata set as possible by baseclass according to upstream information and/or subclass settings, though subclass may still set buffer timestamp and duration if desired.
parent_class	Gst.ElementClass	r	the parent class
pre_push_frame	object	r	Optional. Called just prior to pushing a frame (after any pending events have been sent) to give subclass a chance to perform additional actions at this time (e.g. tag sending) or to decide whether this buffer should be dropped or not (e.g. custom segment clipping).
set_sink_caps	object	r	Optional. Allows the subclass to be notified of the actual caps set.
sink_event	object	r	Optional. Event handler on the sink pad. This function should chain up to the parent implementation to let the default handler run.
sink_query	object	r	Optional. Query handler on the sink pad. This function should chain up to the parent implementation to let the default handler run
src_event	object	r	Optional. Event handler on the source pad. Should chain up to the parent to let the default handler run.
src_query	object	r	Optional. Query handler on the source pad. Should chain up to the parent to let the default handler run
start	object	r	Optional. Called when the element starts processing. Allows opening external resources.
stop	object	r	Optional. Called when the element stops processing. Allows closing external resources.

Methods

None

Details

class GstBase.BaseParseClass

Subclasses can override any of the available virtual methods or not, as needed. At minimum handle_frame needs to be overridden.