path: root/voctocore/lib/audio/rawoutput.py

#!/usr/bin/python3
import logging, socket
from gi.repository import GObject, Gst

from lib.config import Config

class AudioRawOutput(object):
    log = logging.getLogger('AudioRawOutput')

    name = None
    port = None
    caps = None

    boundSocket = None

    receiverPipelines = []
    currentConnections = []

    def __init__(self, channel, port, caps):
        self.log = logging.getLogger('AudioRawOutput['+channel+']')

        self.channel = channel
        self.port = port
        self.caps = caps

        self.log.debug('Binding to Mirror-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)

        pipeline = """
            interaudiosrc channel={channel} !
            {caps} !
            gdppay !
            fdsink fd={fd}
        """.format(
            fd=conn.fileno(),
            channel=self.channel,
            caps=self.caps
        )
        self.log.debug('Launching Pipeline:\n%s', pipeline)
        receiverPipeline = Gst.parse_launch(pipeline)

        def on_eos(bus, message):
            self.log.info('Received End-of-Stream-Signal on Source-Receiver-Pipeline')
            self.disconnect(receiverPipeline, conn)

        def on_error(bus, message):
            self.log.info('Received Error-Signal on Source-Receiver-Pipeline')

            (error, debug) = message.parse_error()
            self.log.debug('Error-Message %s\n%s', error.message, debug)

            self.disconnect(receiverPipeline, conn)

        self.log.debug('Binding End-of-Stream-Signal on Pipeline')
        receiverPipeline.bus.add_signal_watch()
        receiverPipeline.bus.connect("message::eos", on_eos)
        receiverPipeline.bus.connect("message::error", on_error)

        receiverPipeline.set_state(Gst.State.PLAYING)

        self.receiverPipelines.append(receiverPipeline)
        self.currentConnections.append(conn)

        self.log.info('Now %u Receiver connected', len(self.currentConnections))

        return True

    def disconnect(self, receiverPipeline, currentConnection):
        receiverPipeline.set_state(Gst.State.NULL)
        self.receiverPipelines.remove(receiverPipeline)
        self.currentConnections.remove(currentConnection)
        self.log.info('Disconnected Receiver, now %u Receiver connected', len(self.currentConnections))