1 files changed, 148 insertions, 0 deletions
diff --git a/voctocore/experiments/failovertest2.py b/voctocore/experiments/failovertest2.py
new file mode 100755
index 0000000..f7fae9e
--- /dev/null
+++ b/voctocore/experiments/failovertest2.py
@@ -0,0 +1,148 @@
+#!/usr/bin/python3
+
+from os import path
+
+import gi
+gi.require_version('Gst', '1.0')
+from gi.repository import GObject, Gst
+
+
+GObject.threads_init()
+Gst.init(None)
+
+class FramegrabberSource(Gst.Bin):
+    def __init__(self, uri, caps):
+        super().__init__()
+        self.caps = caps
+
+        # Create elements
+        self.http = Gst.ElementFactory.make('souphttpsrc', None)
+        self.demux = Gst.ElementFactory.make('multipartdemux', None)
+        self.parse = Gst.ElementFactory.make('jpegparse', None)
+        self.dec = Gst.ElementFactory.make('jpegdec', None)
+        self.queue = Gst.ElementFactory.make('queue', None)
+
+        # Add elements to Bin
+        self.add(self.http)
+        self.add(self.parse)
+        self.add(self.demux)
+        self.add(self.dec)
+        self.add(self.queue)
+        
+        # Set properties
+        self.http.set_property('location', uri)
+        self.http.set_property('timeout', 5)
+        #self.http.set_property('is-live', True)
+        #self.http.set_property('do-timestamp', True)
+        
+        # Connect signal handlers
+        self.demux.connect('pad-added', self.on_demux_pad_added)
+        self.queue.connect('underrun', self.on_queue_underrun)
+        self.queue.connect('running', self.on_queue_running)
+        self.queue.connect('pushing', self.on_queue_pushing)
+        
+        # Link elements
+        self.http.link(self.demux)
+        # dynamic linked # self.demux.link(self.parse)
+        self.parse.link(self.dec)
+        self.dec.link(self.queue)
+
+        # Add Ghost Pads
+        self.add_pad(
+            Gst.GhostPad.new('src', self.queue.get_static_pad('src'))
+        )
+    
+    def on_demux_pad_added(self, element, pad):
+        string = pad.query_caps(None).to_string()
+        print('on_demux_pad_added():', string)
+        if string.startswith('image/jpeg'):
+            pad.link(self.parse.get_static_pad('sink'))
+    
+    def on_queue_underrun(self, queue):
+        print('on_queue_underrun()')
+    
+    def on_queue_running(self, queue):
+        print('on_queue_running()')
+    
+    def on_queue_pushing(self, queue):
+        print('on_queue_pushing()')
+
+
+class VideomixerWithDisplay(Gst.Bin):
+    def __init__(self):
+        super().__init__()
+        
+        # Create elements
+        self.secondsrc = Gst.ElementFactory.make('videotestsrc', None)
+        self.mixer = Gst.ElementFactory.make('videomixer', None)
+        self.display = Gst.ElementFactory.make('ximagesink', None)
+        
+        # Add elements to Bin
+        self.add(self.secondsrc)
+        self.add(self.mixer)
+        self.add(self.display)
+        
+        # Set properties
+        self.secondsrc.set_property('pattern', 'ball')
+        
+        # Request Pads
+        self.firstpad = self.mixer.get_request_pad('sink_%u')
+        self.secondpad = self.mixer.get_request_pad('sink_%u')
+        
+        # Set pad-properties
+        self.secondpad.set_property('alpha', 0.7)
+        self.secondpad.set_property('xpos', 50)
+        self.secondpad.set_property('ypos', 50)
+        
+        # Link elements
+        self.secondsrc.get_static_pad('src').link(self.secondpad)
+        self.mixer.link(self.display)
+        
+        # Add Ghost Pads
+        self.add_pad(
+            Gst.GhostPad.new('sink', self.firstpad)
+        )
+
+
+
+class Example:
+    def __init__(self):        
+        self.mainloop = GObject.MainLoop()
+        self.pipeline = Gst.Pipeline()
+        self.bus = self.pipeline.get_bus()
+        self.bus.add_signal_watch()
+        self.bus.connect('message::eos', self.on_eos)
+        self.bus.connect('message::error', self.on_error)
+
+        # Create elements
+        self.grabbersrc = FramegrabberSource(
+            uri='http://beachcam.kdhnc.com/mjpg/video.mjpg?camera=1',
+            caps=Gst.caps_from_string('image/jpeg,framerate=1/1'))
+
+        self.mixdisplay = VideomixerWithDisplay()
+
+        # Add elements to pipeline      
+        self.pipeline.add(self.grabbersrc)
+        self.pipeline.add(self.mixdisplay)
+
+        self.grabbersrc.link(self.mixdisplay)
+
+    def run(self):
+        self.pipeline.set_state(Gst.State.PLAYING)
+        self.mainloop.run()
+
+    def kill(self):
+        self.pipeline.set_state(Gst.State.NULL)
+        self.mainloop.quit()
+
+    def on_eos(self, bus, msg):
+        print('on_eos()')
+        self.kill()
+
+    def on_error(self, bus, msg):
+        print('on_error():', msg.parse_error())
+        self.kill()
+
+
+example = Example()
+example.run()