import sys

import audio

import string

import getopt

import auds

debug = []

DEF_RATE = 3

def main():

#

gain = 100

rate = 0

starter = audio.write

stopper = 0

#

optlist, args = getopt.getopt(sys.argv[1:], 'adg:r:')

#

for optname, optarg in optlist:

if 0:

pass

elif optname == '-d':

debug.append(1)

elif optname == '-g':

gain = string.atoi(optarg)

if not (0 < gain < 256):

raise optarg.error, '-g gain out of range'

elif optname == '-r':

rate = string.atoi(optarg)

if not (1 <= rate <= 3):

raise optarg.error, '-r rate out of range'

elif optname == '-a':

starter = audio.start_playing

stopper = audio.wait_playing

#

audio.setoutgain(gain)

audio.setrate(rate)

#

if not args:

play(starter, rate, auds.loadfp(sys.stdin))

else:

real_stopper = 0

for file in args:

if real_stopper:

real_stopper()

play(starter, rate, auds.load(file))

real_stopper = stopper

def play(starter, rate, data):

magic = data[:4]

if magic == '0008':

mrate = 3

elif magic == '0016':

mrate = 2

elif magic == '0032':

mrate = 1

else:

mrate = 0

if mrate:

data = data[4:]

else:

mrate = DEF_RATE

if not rate: rate = mrate

audio.setrate(rate)

starter(data)

try:

main()

finally:

audio.setoutgain(0)

audio.done()

Three programs that provide a user interface based upon STDWIN to the

audio device of the SGI 4D/25. These scripts also demonstrate the power

of a set of window interface classes implemented in Python that simplify

the construction of all sorts of buttons, etc.

XXX This hardware is already obsolete; see ../al for examples of audio

XXX on the Indigo and 4D/35.

jukebox Browses a directory full of sound samples and lets you

play selected ones. (Probably not fully functional, it

requires a conversion program.)

rec A tape recorder that lets you record a sound sample,

play it back, and save it to a file. Various options to

set sampling rate, volume etc. When idle it doubles

as a VU meter.

vumeter A VU meter that displays a history of the volume of

sound recently sampled from the microphone.