add base for a multi-file streaming script

1 files changed, 87 insertions, 0 deletions

diff --git a/example-scripts/gstreamer/source-nostream-music-from-folder.py b/example-scripts/gstreamer/source-nostream-music-from-folder.py
new file mode 100755
index 0000000..87ca3c7
--- /dev/null
+++ b/example-scripts/gstreamer/source-nostream-music-from-folder.py
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+import sys, gi, signal
+
+gi.require_version('Gst', '1.0')
+from gi.repository import Gst, GObject
+
+# init GObject & Co. before importing local classes
+GObject.threads_init()
+Gst.init([])
+
+class LoopSource(object):
+	def __init__(self):
+		pipeline = """
+			audioresample name=join !
+			audioconvert !
+			audio/x-raw,format=S16LE,channels=2,layout=interleaved,rate=48000 !
+			matroskamux !
+			tcpclientsink host=localhost port=18000
+		"""
+
+		self.pipeline = Gst.parse_launch(pipeline)
+
+		# https://c3voc.mazdermind.de/testfiles/music-snippets.tar
+
+		self.src = Gst.ElementFactory.make('uridecodebin', None)
+		self.src.set_property('uri', 'file:///home/peter/Music/pieces/001 - Bruno Mars - Grenade.mp3');
+		self.src.connect('pad-added', self.on_pad_added)
+		self.pipeline.add(self.src)
+
+		self.joinpad = self.pipeline.get_by_name('join').get_static_pad('sink')
+
+		# Binding End-of-Stream-Signal on Source-Pipeline
+		self.pipeline.bus.add_signal_watch()
+		self.pipeline.bus.connect("message::eos", self.on_eos)
+		self.pipeline.bus.connect("message::error", self.on_error)
+
+		print("playing")
+		self.pipeline.set_state(Gst.State.PLAYING)
+
+	def on_pad_added(self, src, pad):
+		print('New Pad: '+str(pad))
+		pad.add_probe(Gst.PadProbeType.EVENT_DOWNSTREAM | Gst.PadProbeType.BLOCK, self.on_pad_event)
+		if self.joinpad.is_linked():
+			self.joinpad.unlink(self.joinpad.get_peer())
+		pad.link(self.joinpad)
+
+	def on_pad_event(self, pad, info):
+		event = info.get_event()
+		print('Pad Event: '+str(event.type)+' on Pad '+str(pad))
+		if event.type == Gst.EventType.EOS:
+			print('Is an EOS event, dropping & unlinking')
+			GObject.idle_add(self.next_track)
+			return Gst.PadProbeReturn.DROP
+
+		return Gst.PadProbeReturn.PASS
+
+	def next_track(self):
+		print("next_track")
+		self.src.set_state(Gst.State.READY)
+		self.src.set_property('uri', 'file:///home/peter/Music/pieces/003 - Taio Cruz feat. Kylie Minogue - Higher.mp3');
+		self.src.set_state(Gst.State.PLAYING)
+		return False
+
+	def on_eos(self, bus, message):
+		print('Received EOS-Signal')
+		sys.exit(1)
+
+	def on_error(self, bus, message):
+		print('Received Error-Signal')
+		(error, debug) = message.parse_error()
+		print('Error-Details: #%u: %s' % (error.code, debug))
+		sys.exit(1)
+
+def main():
+	signal.signal(signal.SIGINT, signal.SIG_DFL)
+
+	src = LoopSource()
+
+	mainloop = GObject.MainLoop()
+	try:
+		mainloop.run()
+	except KeyboardInterrupt:
+		print('Terminated via Ctrl-C')
+
+
+if __name__ == '__main__':
+	main()