I currently have a Python program which pushes images to a gstreamer
pipeline, however it only seems to display the images using autovideosink,
and not with udpsink.
def __init__(self):
self.is_push_buffer_allowed = None
self._mainloop = GObject.MainLoop()
udp_sink_pipeline = "appsrc name=source !
image/jpeg,framerate=(fraction)30/1 ! decodebin ! videoscale ! capsfilter
caps=video/x-raw,width=640,height=480,pixel-aspect-ratio=(fraction)1/1 !
queue ! autovideosink"
'''jpegenc ! rtpjpegpay ! udpsink host=127.0.0.1,port=5000'''
self._pipeline = Gst.parse_launch(udp_sink_pipeline)
self._src = self._pipeline.get_by_name('source')
self._src.connect('need-data', self.start_feed)
self._src.connect('enough-data', self.stop_feed)
self._src.set_property('format','time')
self._src.set_property('do-timestamp', True)
def start_feed(self,src,length):
self.is_push_buffer_allowed = True
def stop_feed(self,src):
self.is_push_buffer_allowed = False
def play(self):
self._pipeline.set_state(Gst.State.PLAYING)
def stop(self):
self._pipeline.set_state(Gst.State.NULL)
def run(self):
self._mainloop.run()
def push(self, filename):
if self.is_push_buffer_allowed:
handle = open(filename, 'rb');
data = handle.read()
handle.close()
buf = Gst.Buffer.new_allocate(None, len(data),None)
buf.fill(0,data)
sample = Gst.Sample.new(buf, Gst.caps_from_string("image/jpeg,
framerate=(fraction)30/1"),None,None)
gst_flow_return = self._src.emit('push-sample',sample)
if gst_flow_return != Gst.FlowReturn.OK:
print("Error, Stopped streaming")
else:
'''print("Enough data on buffer.")'''
I try to capture using:
gst-launch-1.0 udpsrc port=5000 !
application/x-rtp,encoding-name=JPEG,payload=26 ! rtpjpegdepay ! jpegdec !
autovideosink
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