Changed status format; added host argument; documented arguments;

fixed code for missing frame argument.

Demo/sgi/cd/sendcd.py

 # Read CD audio data from the SCSI CD player and send it as UDP
-# packets to "readcd.py" on another host.
-# Option:
-# "-l" lists track info and quits.
-# "-s" displays status and quits.
+# packets to "recvcd.py" on another host.
+#
+# Usage: python sendcd.py [options] host [track | minutes seconds [frames]]
+#
+# Options:
+# "-l"		list track info and quit.
+# "-s"		display status and quit.
+#
+# Arguments:
+# host		host to send the audio data to (required unless -l or -s).
+# track		track number where to start; alternatively,
+# min sec [frames]	absolute address where to start;
+#		default is continue at current point according to status.
 
 import cd
 import sys
 from socket import *
 import getopt
 
-HOST = 'voorn.cwi.nl'			# The host where readcd.py is run
 PORT = 50505				# Must match the port in readcd.py
 
 def main():
@@ -31,10 +39,15 @@ def main():
 				prstatus(player)
 		return
 
+	if not args:
+		sys.stderr.write('usage: ' + sys.argv[0] + ' host [track]\n')
+		sys.exit(2)
+	host, args = args[0], args[1:]
+
 	sys.stdout.write('waiting for socket... ')
 	sys.stdout.flush()
 	port = socket(AF_INET, SOCK_DGRAM)
-	port.connect(HOST, PORT)
+	port.connect(host, PORT)
 	print 'socket connected'
 
 	parser = cd.createparser()
@@ -52,7 +65,7 @@ def main():
 			[min, sec, frame] = args[:3]
 		else:
 			[min, sec] = args
-			frame = 0
+			frame = '0'
 		min, sec, frame = eval(min), eval(sec), eval(frame)
 		print 'Seek to', triple(min, sec, frame)
 		dummy = player.seek(min, sec, frame)
@@ -61,7 +74,7 @@ def main():
 		print 'Seek to track', track
 		dummy = player.seektrack(track)
 	else:
-		min, sec, frame = player.getstatus()[5:8]
+		min, sec, frame = player.getstatus()[3]
 		print 'Try to seek back to', triple(min, sec, frame)
 		try:
 			player.seek(min, sec, frame)
@@ -87,11 +100,8 @@ def prtrackinfo(player):
 		except RuntimeError:
 			break
 	for i in range(len(info)):
-		start_min, start_sec, start_frame, \
-			total_min, total_sec, total_frame = info[i]
-		print 'Track', zfill(i+1), \
-			triple(start_min, start_sec, start_frame), \
-			triple(total_min, total_sec, total_frame)
+		start, total = info[i]
+		print 'Track', zfill(i+1), triple(start), triple(total)
 
 def audiocallback(port, type, data):
 ##	sys.stdout.write('#')
@@ -117,25 +127,24 @@ def controlcallback(arg, type, data):
 statedict = ['ERROR', 'NODISK', 'READY', 'PLAYING', 'PAUSED', 'STILL']
 
 def prstatus(player):
-	state, track, min, sec, frame, abs_min, abs_sec, abs_frame, \
-		total_min, total_sec, total_frame, first, last, scsi_audio, \
-		cur_block, dum1, dum2, dum3 = player.getstatus()
+	state, track, curtime, abstime, totaltime, first, last, \
+		scsi_audio, cur_block, dummy = player.getstatus()
 	print 'Status:',
 	if 0 <= state < len(statedict):
 		print statedict[state]
 	else:
 		print state
 	print 'Track: ', track
-	print 'Time:  ', triple(min, sec, frame)
-	print 'Abs:   ', triple(abs_min, abs_sec, abs_frame)
-	print 'Total: ', triple(total_min, total_sec, total_frame)
+	print 'Time:  ', triple(curtime)
+	print 'Abs:   ', triple(abstime)
+	print 'Total: ', triple(totaltime)
 	print 'First: ', first
 	print 'Last:  ', last
 	print 'SCSI:  ', scsi_audio
 	print 'Block: ', cur_block
-	print 'Future:', (dum1, dum2, dum3)
+	print 'Future:', dummy
 
-def triple(a, b, c):
+def triple((a, b, c)):
 	return zfill(a) + ':' + zfill(b) + ':' + zfill(c)
 
 def zfill(n):