gstreamer/subprojects/gst-python/examples/plugins/python/identity.py
Thibault Saunier fab64c0b3a python: Add a Gst.init_python function to be called from plugins
Plugins know that they will be initialized after Gst was initialized
so they can call the initialization function dedicated for the python
bindings

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2675>
2022-07-08 14:37:14 +00:00

42 lines
1.5 KiB
Python

#!/usr/bin/env python
# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
# identity.py
# 2016 Marianna S. Buschle <msb@qtec.com>
#
# Simple identity element in python
#
# You can run the example from the source doing from gst-python/:
#
# $ export GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD/plugin:$PWD/examples/plugins
# $ GST_DEBUG=python:4 gst-launch-1.0 fakesrc num-buffers=10 ! identity_py ! fakesink
import gi
gi.require_version('GstBase', '1.0')
from gi.repository import Gst, GObject, GstBase
Gst.init_python()
#
# Simple Identity element created entirely in python
#
class Identity(GstBase.BaseTransform):
__gstmetadata__ = ('Identity Python','Transform', \
'Simple identity element written in python', 'Marianna S. Buschle')
__gsttemplates__ = (Gst.PadTemplate.new("src",
Gst.PadDirection.SRC,
Gst.PadPresence.ALWAYS,
Gst.Caps.new_any()),
Gst.PadTemplate.new("sink",
Gst.PadDirection.SINK,
Gst.PadPresence.ALWAYS,
Gst.Caps.new_any()))
def do_transform_ip(self, buffer):
Gst.info("timestamp(buffer):%s" % (Gst.TIME_ARGS(buffer.pts)))
return Gst.FlowReturn.OK
GObject.type_register(Identity)
__gstelementfactory__ = ("identity_py", Gst.Rank.NONE, Identity)