import os

import sys

import lib

import time

import socket

import ConfigParser

class Media:

    def __init__(self, config):

        self.config = config

        self.socket = None

        self.child_pid = None

    def setup(self, filename, mux, vcodec, vbitrate,\

              fps, acodec, abitrate, width, height, port):

        if (os.path.exists(filename)):

            self.filename = filename

            self.mux = mux

            self.vcodec = vcodec

            self.vbitrate = int(vbitrate)

            self.fps = int(fps)

            self.acodec = acodec

            self.abitrate = int(abitrate)

            self.width = int(width)

            self.height = int(height)

            self.port = int(port)

            self.fifo = self.config.get("Mencoder", "fifo_path")

            # good one: /tmp/dvb.mpg avi mpeg4 400 25 mp3lame 192 320 240 5000

            self.path = self.config.get("Mencoder", "path")

            self.path += " %s -mf fps=%d -of %s -oac %s -lameopts cbr:br=%d -ovc lavc"\

                         " -lavcopts vcodec=%s:vbitrate=%d -vf scale=%d:%d"\

                         " -o %s 1> /dev/null 2> /dev/null" % (

                self.filename, self.fps, self.mux, self.acodec, self.abitrate,

                self.vcodec, self.vbitrate, self.width, self.height, self.fifo)

            if (self.socket != None):

                del(self.socket)

            self.socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

            self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

            self.socket.bind( ('', self.port) )

            self.socket.listen(1)

            return 0

        else:

            lib.log("File requested does not exist. SETUP failed.")

            return -1

    def play(self):

        try:

            os.mkfifo(self.fifo)

        except:

            lib.log("Fifo already exists")

        lib.log("Starting Mencoder: %s" % self.path )

        # exec Mencoder

        pin, self.pout = os.popen2(self.path)

        pin.close()

        fifo = open(self.fifo)

        self.child_pid = os.fork()

        if (self.child_pid == 0):

            conn,addr= self.socket.accept()

            lib.log("Sending Data to client: %s" % addr[0])

            data = fifo.read(1024)

            conn.settimeout(5)

            retry = 0

            while( data != "" and retry < 5):

                try:

                    conn.send(data)

                except socket.error:

                    lib.log("Socket error (maybe timeout ?)")

                    retry += 1

                data = fifo.read(1024)

            if (retry < 5):

                lib.log("Finished sending Data to client: %s" % addr[0])

            else:

                lib.log("Client timed out")

    def stop(self):

        self.pout.close()

        if (self.socket != None):

            lib.log("Closing socket")

            self.socket.close()

            lib.log("Trying to stop Mencoder process")

            if (self.child_pid != None):

                os.kill(self.child_pid, 9)