import os

 import sys

 import lib

 import time

 import signal

 import socket

 import ConfigParser

 from select import *

 from subprocess import *

 class Media:

     def __init__(self, config):

         self.config = config

         self.language = "en"

         self.socket = None

         self.child_pid = None

         self.mplayer = None

         self.mencoder_pid = None

         self.mplayer_pid = None

         signal.signal(signal.SIGABRT, self.kill_handler)

     def kill_handler(self, sig, frame):

         try:

             os.kill(self.mplayer_pid.pid + 1, signal.SIGKILL)

             sys.exit(0)

         except:

             lib.log("Problems closing child")

     def set_args(self, options):

         for opt in options:

             if (opt == "file" or opt == "dvd"):

                 if (self.acodec == "mp3lame"):

                     audio = "-oac mp3lame -lameopts cbr:br=%s vol=5" % self.abitrate

                 else:

                     audio = "-oac lavc -lavcopts acodec=%s abitrate=%s" % (\

                         self.acodec, self.abitrate)

             if (opt == "file"):

                 self.kind = "file"

                 self.args += " %s -mf fps=%s -of %s %s"\

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

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

                     self.filename, self.fps, self.mux, audio, self.vcodec,

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

             elif (opt == "dvd"):

                 self.kind = "dvd"

                 self.args += " dvd://%s -alang %s -vf scale=%s:%s %s"\

                              " -of %s -ovc lavc -lavcopts vcodec=%s:vbitrate=%s -o %s"\

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

                     self.filename, self.language, self.width, self.height, audio,

                     self.mux, self.vcodec, self.vbitrate, self.fifo, self.fps)

             elif (opt == "local"):

                 self.mplayer = os.popen("which mplayer").read().strip()

             elif (opt.find("language=") >= 0):

                 try:

                     self.language = opt.split("=")[1]

                 except:

                     lib.log("Bad language option")

     def run_mplayer(self):

         msg = "%s 1>/dev/null 2>/dev/null" % self.filename

         if (self.kind == "dvd"):

             msg = "dvd://" + msg

         self.mplayer += " " + msg

         self.mplayer_pid = Popen(self.mplayer, shell=True)

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

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

         self.filename = filename

         self.mux = mux

         self.vcodec = vcodec

         self.vbitrate = vbitrate

         self.fps = fps

         self.acodec = acodec

         self.abitrate = abitrate

         self.width = width

         self.height = height

         self.port = int(port)

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

         self.args = ""

         self.kind = ""

         self.set_args(options)

         if (self.kind == "file" and not os.path.exists(self.filename)):

             msg = "File requested does not exist. SETUP failed."

             lib.log(msg)

             return msg

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

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

         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

     def play(self):

         try:

             os.mkfifo(self.fifo)

         except:

             lib.log("Fifo already exists")

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

         # exec Mencoder

         self.mencoder_pid = Popen(self.path + self.args, shell=True)

         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)

                     r, w, x = select([conn], [], [], 0)

                     if conn in r:

                         back = conn.recv(1024)

                         if (back == "OK" and self.mplayer and not self.mplayer_pid):

                             self.run_mplayer()

                 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")

             sys.exit(0)

     def stop(self):

         try:

             os.kill(self.mencoder_pid.pid + 1, signal.SIGKILL)

             self.mplayer = None

         except:

             lib.log("Trying to stop before playing...")

         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, signal.SIGABRT)