1 files changed, 96 insertions, 0 deletions
diff --git a/voctocore/lib/avpreviewoutput.py b/voctocore/lib/avpreviewoutput.py
new file mode 100644
index 0000000..2fa8c3a
--- /dev/null
+++ b/voctocore/lib/avpreviewoutput.py
@@ -0,0 +1,96 @@
+#!/usr/bin/python3
+import logging, socket
+from gi.repository import GObject, Gst
+
+from lib.config import Config
+
+class AVPreviewOutput(object):
+	log = logging.getLogger('AVPreviewOutput')
+
+	name = None
+	port = None
+	caps = None
+
+	boundSocket = None
+	receiverPipeline = None
+
+	currentConnections = []
+
+	def __init__(self, channel, port):
+		self.log = logging.getLogger('AVPreviewOutput['+channel+']')
+
+		self.channel = channel
+		self.port = port
+
+		if Config.has_option('previews', 'videocaps'):
+			vcaps_out = Config.get('previews', 'videocaps')
+		else:
+			vcaps_out = Config.get('mix', 'videocaps')
+
+		pipeline = """
+			interaudiosrc channel=audio_{channel} !
+			{acaps} !
+			queue !
+			mux.
+
+			intervideosrc channel=video_{channel} !
+			{vcaps_in} !
+			textoverlay halignment=left valignment=top ypad=75 text=AVPreviewOutput !
+			timeoverlay halignment=left valignment=top ypad=75 xpad=400 !
+			videorate !
+			videoscale !
+			{vcaps_out} !
+			jpegenc !
+			queue !
+			mux.
+
+			matroskamux
+				name=mux
+				streamable=true
+				writing-app=Voctomix-AVPreviewOutput !
+
+			multifdsink
+				sync-method=next-keyframe
+				name=fd
+		""".format(
+			channel=self.channel,
+			acaps=Config.get('mix', 'audiocaps'),
+			vcaps_in=Config.get('mix', 'videocaps'),
+			vcaps_out=vcaps_out
+		)
+
+		self.log.debug('Launching Output-Pipeline:\n%s', pipeline)
+		self.receiverPipeline = Gst.parse_launch(pipeline)
+		self.receiverPipeline.set_state(Gst.State.PLAYING)
+
+		self.log.debug('Binding to Output-Socket on [::]:%u', port)
+		self.boundSocket = socket.socket(socket.AF_INET6)
+		self.boundSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+		self.boundSocket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
+		self.boundSocket.bind(('::', port))
+		self.boundSocket.listen(1)
+
+		self.log.debug('Setting GObject io-watch on Socket')
+		GObject.io_add_watch(self.boundSocket, GObject.IO_IN, self.on_connect)
+
+	def on_connect(self, sock, *args):
+		conn, addr = sock.accept()
+		self.log.info("Incomming Connection from %s", addr)
+
+		def on_disconnect(multifdsink, fileno):
+			if fileno == conn.fileno():
+				self.log.debug('fd %u removed from multifdsink', fileno)
+
+				self.currentConnections.remove(conn)
+				self.log.info('Disconnected Receiver %s', addr)
+				self.log.info('Now %u Receiver connected', len(self.currentConnections))
+
+		self.log.debug('Adding fd %u to multifdsink', conn.fileno())
+		fdsink = self.receiverPipeline.get_by_name('fd')
+		fdsink.emit('add', conn.fileno())
+		fdsink.connect('client-fd-removed', on_disconnect)
+
+		self.currentConnections.append(conn)
+		self.log.info('Now %u Receiver connected', len(self.currentConnections))
+
+		return True