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gst: set_trigger & software_trigger added for aravissrc
Co-authored-by: WhaSukGO <[email protected]>
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#!/usr/bin/env python | ||
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# If you have installed aravis in a non standard location, you may need | ||
# to make GI_TYPELIB_PATH point to the correct location. For example: | ||
# | ||
# export GI_TYPELIB_PATH=$GI_TYPELIB_PATH:/opt/bin/lib/girepositry-1.0/ | ||
# | ||
# You may also have to give the path to libaravis.so, using LD_PRELOAD or | ||
# LD_LIBRARY_PATH. | ||
# | ||
# As this example alos uses the aravis gstreamer plugin, you may need to tell the path to the plugin using | ||
# GST_PLUGIN_PATH. | ||
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# Example of a gstreamer pipeline using a software trigger | ||
# | ||
# Author: WhaSukGO <[email protected]> | ||
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import gi | ||
import threading | ||
import time | ||
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gi.require_version('Gst', '1.0') | ||
from gi.repository import Gst, GLib | ||
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# Initialize GStreamer | ||
Gst.init(None) | ||
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def main(): | ||
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# Create GStreamer elements | ||
aravissrc = Gst.ElementFactory.make("aravissrc", "source") | ||
aravissrc.set_property("exposure", 1700) | ||
aravissrc.set_property("do-timestamp", True) | ||
aravissrc.set_property("trigger", "Software") | ||
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bayer_caps = Gst.Caps.from_string("video/x-bayer,format=rggb,width=800,height=600") | ||
bayer2rgb = Gst.ElementFactory.make("bayer2rgb", "bayer2rgb") | ||
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videoconvert = Gst.ElementFactory.make("videoconvert", "videoconvert") | ||
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videosink = Gst.ElementFactory.make("autovideosink", "videosink") | ||
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# Create a new pipeline | ||
pipeline = Gst.Pipeline.new("mypipeline") | ||
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# Add elements to the pipeline | ||
pipeline.add(aravissrc) | ||
pipeline.add(bayer2rgb) | ||
pipeline.add(videoconvert) | ||
pipeline.add(videosink) | ||
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# Link the elements with the capsfilter in between | ||
aravissrc.link_filtered(bayer2rgb, bayer_caps) | ||
bayer2rgb.link(videoconvert) | ||
videoconvert.link(videosink) | ||
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# Function to trigger the camera | ||
def trigger_camera(): | ||
while True: | ||
time.sleep(0.5) # Sleep for 2 milliseconds (500fps) | ||
aravissrc.emit("software-trigger") | ||
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# Create and start the trigger thread | ||
trigger_thread = threading.Thread(target=trigger_camera) | ||
trigger_thread.daemon = True # Daemonize thread so it exits when the main program does | ||
trigger_thread.start() | ||
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# Start the pipeline | ||
pipeline.set_state(Gst.State.PLAYING) | ||
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# Run the pipeline | ||
loop = GLib.MainLoop() | ||
try: | ||
loop.run() | ||
except KeyboardInterrupt: | ||
pass | ||
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# Clean up | ||
pipeline.set_state(Gst.State.NULL) | ||
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if __name__ == "__main__": | ||
main() |