#!/usr/bin/python 
# -*- coding: utf-8 -*-
# Working program:
 
import os
 
class tools:
        def alsaUsedBy(self):
                result = []
                tmp = []
                f = os.popen("fuser /dev/snd/* /dev/dsp* /dev/snd/*", "r")
                # get pids:
                for line in f.readlines():
                        print "LINE", line
			for pid in line.split():
                                print "PID", pid
				if pid != "":
                                        tmp.append(pid)
                print "Half way done", tmp
		# convert pids to application names
                for pid in tmp:
			print "PID2", pid
                        f = os.popen("ps " + pid, "r")
                        for line in f.readlines():
				print "PSLINE", line
                                items = line.split()
				print "ITEMS", items
                                if items[0] != "PID" and len(items) >= 5:
                                        if items[4] not in result:
                                                result.append(items[4])
                return result
 
if __name__=="__main__":
        h = tools()
        print "Sound is used by the following applications:"
        print h.alsaUsedBy()