mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-30 04:00:37 +00:00
46 lines
1.5 KiB
Python
46 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('Gst', '1.0')
|
|
gi.require_version('GstBase', '1.0')
|
|
|
|
from gi.repository import Gst, GObject, GstBase
|
|
Gst.init(None)
|
|
|
|
#
|
|
# 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 __init__(self):
|
|
self.transformed = False
|
|
|
|
def do_transform_ip(self, buffer):
|
|
self.transformed = True
|
|
return Gst.FlowReturn.OK
|
|
|
|
GObject.type_register(Identity)
|
|
__gstelementfactory__ = ("test_identity_py", Gst.Rank.NONE, Identity)
|