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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
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#!/usr/bin/env python3
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import sys
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import gi
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import logging
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gi.require_version("GLib", "2.0")
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gi.require_version("GObject", "2.0")
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gi.require_version("Gst", "1.0")
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from gi.repository import Gst, GLib, GObject
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logging.basicConfig(level=logging.DEBUG, format="[%(name)s] [%(levelname)8s] - %(message)s")
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logger = logging.getLogger(__name__)
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# Initialize GStreamer
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Gst.init(sys.argv[1:])
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# Create the elements
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source = Gst.ElementFactory.make("videotestsrc", "source")
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sink = Gst.ElementFactory.make("autovideosink", "sink")
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# Create the empty pipeline
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pipeline = Gst.Pipeline.new("test-pipeline")
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if not pipeline or not source or not sink:
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logger.error("Not all elements could be created.")
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sys.exit(1)
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# Build the pipeline
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pipeline.add(source, sink)
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if not source.link(sink):
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logger.error("Elements could not be linked.")
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sys.exit(1)
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# Modify the source's properties
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source.props.pattern = 0
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# Can alternatively be done using `source.set_property("pattern",0)`
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# or using `Gst.util_set_object_arg(source, "pattern", 0)`
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# Start playing
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ret = pipeline.set_state(Gst.State.PLAYING)
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if ret == Gst.StateChangeReturn.FAILURE:
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logger.error("Unable to set the pipeline to the playing state.")
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sys.exit(1)
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# Wait for EOS or error
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bus = pipeline.get_bus()
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msg = bus.timed_pop_filtered(Gst.CLOCK_TIME_NONE, Gst.MessageType.ERROR | Gst.MessageType.EOS)
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# Parse message
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if msg:
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if msg.type == Gst.MessageType.ERROR:
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err, debug_info = msg.parse_error()
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logger.error(f"Error received from element {msg.src.get_name()}: {err.message}")
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logger.error(f"Debugging information: {debug_info if debug_info else 'none'}")
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elif msg.type == Gst.MessageType.EOS:
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logger.info("End-Of-Stream reached.")
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else:
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# This should not happen as we only asked for ERRORs and EOS
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logger.error("Unexpected message received.")
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pipeline.set_state(Gst.State.NULL)
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