path: root/voctocore/experiments/intervideo.py

#!/usr/bin/python3
import gi, time
import socket

# import GStreamer and GTK-Helper classes
gi.require_version('Gst', '1.0')
from gi.repository import GLib, Gst, GObject

# init GObject before importing local classes
GObject.threads_init()
Gst.init(None)

class Example:
    def __init__(self):
        self.mainloop = GObject.MainLoop()
        #self.vsink   = Gst.parse_launch('intervideosrc channel=video ! video/x-raw,height=600,width=800,format=I420,framerate=25/1 ! timeoverlay ! videoconvert ! ximagesink')
        self.vsource = None

        #self.asink   = Gst.parse_launch('interaudiosrc channel=audio ! audio/x-raw,format=S16LE,layout=interleaved,rate=48000,channels=2 ! autoaudiosink')
        self.asource = None

        self.sink   = Gst.parse_launch("""
            intervideosrc channel=video !
                queue !
                video/x-raw,height=600,width=800,format=I420,framerate=25/1 !
                timeoverlay !
                tee name=vtee !
                queue !
                videoconvert !
                avenc_mpeg2video bitrate=50000 max-key-interval=0 !
                queue !
                mux.

            interaudiosrc blocksize=4096 channel=audio !
                queue !
                audio/x-raw,format=S16LE,layout=interleaved,rate=48000,channels=2 !
                tee name=atee !
                queue !
                avenc_mp2 bitrate=192000 !
                queue !
                mux.

            mpegtsmux name=mux !
                filesink location=foo.ts

            vtee. ! queue ! videoconvert ! xvimagesink
            atee. ! queue ! audioconvert ! alsasink
        """)


        # Create the server, binding to localhost on port 5000
        vsock = socket.socket(socket.AF_INET6)
        vsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        vsock.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
        vsock.bind(('::', 5000))
        vsock.listen(1)


        # Create the server, binding to localhost on port 5000
        asock = socket.socket(socket.AF_INET6)
        asock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        asock.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
        asock.bind(('::', 6000))
        asock.listen(1)

        # register socket for callback inside the GTK-Mainloop
        GObject.io_add_watch(vsock, GObject.IO_IN, self.video_connect)
        GObject.io_add_watch(asock, GObject.IO_IN, self.audio_connect)


    def video_connect(self, sock, *args):
        '''Asynchronous connection listener. Starts a handler for each connection.'''
        if self.vsource:
            return False

        conn, addr = sock.accept()
        print("Connection from", addr)

        self.vsource = Gst.parse_launch('fdsrc name=a fd=%u ! gdpdepay ! video/x-raw,height=600,width=800,format=I420,framerate=25/1 ! timeoverlay halignment=right ! intervideosink channel=video' % conn.fileno())

        self.vsource.bus.add_signal_watch()
        self.vsource.bus.connect("message::eos", self.video_disconnect)

        self.vsource.set_state(Gst.State.PLAYING)

        self.vconn = conn
        return True

    def video_disconnect(self, bus, message):
        self.vsource.set_state(Gst.State.NULL)
        self.vsource = None
        self.vconn = None
        return True


    def audio_connect(self, sock, *args):
        '''Asynchronous connection listener. Starts a handler for each connection.'''
        if self.asource:
            return False

        conn, addr = sock.accept()
        print("Connection from", addr)

        self.asource = Gst.parse_launch('fdsrc name=a fd=%u ! gdpdepay ! audio/x-raw,format=S16LE,layout=interleaved,rate=48000,channels=2 ! interaudiosink channel=audio' % conn.fileno())

        self.asource.bus.add_signal_watch()
        self.asource.bus.connect("message::eos", self.audio_disconnect)

        self.asource.set_state(Gst.State.PLAYING)

        self.aconn = conn
        return True

    def audio_disconnect(self, bus, message):
        self.asource.set_state(Gst.State.NULL)
        self.asource = None
        self.aconn = None
        return True


    def run(self):
        self.sink.set_state(Gst.State.PLAYING)
        self.mainloop.run()

    def kill(self):
        self.sink.set_state(Gst.State.NULL)
        self.mainloop.quit()

example = Example()
example.run()