ref: ef17043327d999101009f85aae72f77399db15ac
dir: /sys/src/cmd/python/Tools/audiopy/audiopy/
#! /usr/bin/env python
"""audiopy -- a program to control the Solaris audio device.
Contact: Barry Warsaw
Email: bwarsaw@python.org
Version: %(__version__)s
When no arguments are given, this pops up a graphical window which lets you
choose the audio input and output devices, and set the output volume.
This program can be driven via the command line, and when done so, no window
pops up. Most options have the general form:
--device[={0,1}]
-d[={0,1}]
Set the I/O device. With no value, it toggles the specified device.
With a value, 0 turns the device off and 1 turns the device on.
The list of devices and their short options are:
(input)
microphone -- m
linein -- i
cd -- c
(output)
headphones -- p
speaker -- s
lineout -- o
Other options are:
--gain volume
-g volume
Sets the output gain to the specified volume, which must be an integer
in the range [%(MIN_GAIN)s..%(MAX_GAIN)s]
--version
-v
Print the version number and exit.
--help
-h
Print this message and exit.
"""
import sys
import os
import errno
import sunaudiodev
from SUNAUDIODEV import *
# Milliseconds between interrupt checks
KEEPALIVE_TIMER = 500
__version__ = '1.1'
class MainWindow:
def __init__(self, device):
from Tkinter import *
self.__helpwin = None
self.__devctl = device
info = device.getinfo()
#
self.__tkroot = tkroot = Tk(className='Audiopy')
tkroot.withdraw()
# create the menubar
menubar = Menu(tkroot)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label='Quit',
command=self.__quit,
accelerator='Alt-Q',
underline=0)
helpmenu = Menu(menubar, name='help', tearoff=0)
helpmenu.add_command(label='About Audiopy...',
command=self.__popup_about,
underline=0)
helpmenu.add_command(label='Help...',
command=self.__popup_using,
underline=0)
menubar.add_cascade(label='File',
menu=filemenu,
underline=0)
menubar.add_cascade(label='Help',
menu=helpmenu,
underline=0)
# now create the top level window
root = self.__root = Toplevel(tkroot, class_='Audiopy', menu=menubar)
root.protocol('WM_DELETE_WINDOW', self.__quit)
root.title('audiopy ' + __version__)
root.iconname('audiopy ' + __version__)
root.tk.createtimerhandler(KEEPALIVE_TIMER, self.__keepalive)
#
buttons = []
#
# where does input come from?
frame = Frame(root, bd=1, relief=RAISED)
frame.grid(row=1, column=0, sticky='NSEW')
label = Label(frame, text='Input From:')
label.grid(row=0, column=0, sticky=E)
self.__inputvar = IntVar()
##
btn = Radiobutton(frame,
text='None',
variable=self.__inputvar,
value=0,
command=self.__pushtodev,
underline=0)
btn.grid(row=0, column=1, sticky=W)
root.bind('<Alt-n>', self.__none)
root.bind('<Alt-N>', self.__none)
if not info.i_avail_ports & MICROPHONE:
btn.configure(state=DISABLED)
buttons.append(btn)
##
btn = Radiobutton(frame,
text='Microphone',
variable=self.__inputvar,
value=MICROPHONE,
command=self.__pushtodev,
underline=0)
btn.grid(row=1, column=1, sticky=W)
root.bind('<Alt-m>', self.__mic)
root.bind('<Alt-M>', self.__mic)
if not info.i_avail_ports & MICROPHONE:
btn.configure(state=DISABLED)
buttons.append(btn)
##
btn = Radiobutton(frame,
text='Line In',
variable=self.__inputvar,
value=LINE_IN,
command=self.__pushtodev,
underline=5)
btn.grid(row=2, column=1, sticky=W)
root.bind('<Alt-i>', self.__linein)
root.bind('<Alt-I>', self.__linein)
if not info.i_avail_ports & LINE_IN:
btn.configure(state=DISABLED)
buttons.append(btn)
## if SUNAUDIODEV was built on an older version of Solaris, the CD
## input device won't exist
try:
btn = Radiobutton(frame,
text='CD',
variable=self.__inputvar,
value=CD,
command=self.__pushtodev,
underline=0)
btn.grid(row=3, column=1, sticky=W)
root.bind('<Alt-c>', self.__cd)
root.bind('<Alt-C>', self.__cd)
if not info.i_avail_ports & CD:
btn.configure(state=DISABLED)
buttons.append(btn)
except NameError:
pass
#
# where does output go to?
frame = Frame(root, bd=1, relief=RAISED)
frame.grid(row=2, column=0, sticky='NSEW')
label = Label(frame, text='Output To:')
label.grid(row=0, column=0, sticky=E)
self.__spkvar = IntVar()
btn = Checkbutton(frame,
text='Speaker',
variable=self.__spkvar,
onvalue=SPEAKER,
command=self.__pushtodev,
underline=0)
btn.grid(row=0, column=1, sticky=W)
root.bind('<Alt-s>', self.__speaker)
root.bind('<Alt-S>', self.__speaker)
if not info.o_avail_ports & SPEAKER:
btn.configure(state=DISABLED)
buttons.append(btn)
##
self.__headvar = IntVar()
btn = Checkbutton(frame,
text='Headphones',
variable=self.__headvar,
onvalue=HEADPHONE,
command=self.__pushtodev,
underline=4)
btn.grid(row=1, column=1, sticky=W)
root.bind('<Alt-p>', self.__headphones)
root.bind('<Alt-P>', self.__headphones)
if not info.o_avail_ports & HEADPHONE:
btn.configure(state=DISABLED)
buttons.append(btn)
##
self.__linevar = IntVar()
btn = Checkbutton(frame,
variable=self.__linevar,
onvalue=LINE_OUT,
text='Line Out',
command=self.__pushtodev,
underline=0)
btn.grid(row=2, column=1, sticky=W)
root.bind('<Alt-l>', self.__lineout)
root.bind('<Alt-L>', self.__lineout)
if not info.o_avail_ports & LINE_OUT:
btn.configure(state=DISABLED)
buttons.append(btn)
#
# Fix up widths
widest = 0
for b in buttons:
width = b['width']
if width > widest:
widest = width
for b in buttons:
b.configure(width=widest)
# root bindings
root.bind('<Alt-q>', self.__quit)
root.bind('<Alt-Q>', self.__quit)
#
# Volume
frame = Frame(root, bd=1, relief=RAISED)
frame.grid(row=3, column=0, sticky='NSEW')
label = Label(frame, text='Output Volume:')
label.grid(row=0, column=0, sticky=W)
self.__scalevar = IntVar()
self.__scale = Scale(frame,
orient=HORIZONTAL,
from_=MIN_GAIN,
to=MAX_GAIN,
length=200,
variable=self.__scalevar,
command=self.__volume)
self.__scale.grid(row=1, column=0, sticky=EW)
#
# do we need to poll for changes?
self.__needtopoll = 1
try:
fd = self.__devctl.fileno()
self.__needtopoll = 0
except AttributeError:
pass
else:
import fcntl
import signal
import STROPTS
# set up the signal handler
signal.signal(signal.SIGPOLL, self.__update)
fcntl.ioctl(fd, STROPTS.I_SETSIG, STROPTS.S_MSG)
self.__update()
def __quit(self, event=None):
self.__devctl.close()
self.__root.quit()
def __popup_about(self, event=None):
import tkMessageBox
tkMessageBox.showinfo('About Audiopy ' + __version__,
'''\
Audiopy %s
Control the Solaris audio device
For information
Contact: Barry A. Warsaw
Email: bwarsaw@python.org''' % __version__)
def __popup_using(self, event=None):
if not self.__helpwin:
self.__helpwin = Helpwin(self.__tkroot, self.__quit)
self.__helpwin.deiconify()
def __keepalive(self):
# Exercise the Python interpreter regularly so keyboard interrupts get
# through.
self.__tkroot.tk.createtimerhandler(KEEPALIVE_TIMER, self.__keepalive)
if self.__needtopoll:
self.__update()
def __update(self, num=None, frame=None):
# It's possible (although I have never seen it) to get an interrupted
# system call during the getinfo() call. If so, and we're polling,
# don't sweat it because we'll come around again later. Otherwise,
# we'll give it a couple of tries and then give up until next time.
tries = 0
while 1:
try:
info = self.__devctl.getinfo()
break
except sunaudiodev.error:
if self.__needtopoll or tries > 3:
return
tries = tries + 1
# input
self.__inputvar.set(info.i_port)
# output
self.__spkvar.set(info.o_port & SPEAKER)
self.__headvar.set(info.o_port & HEADPHONE)
self.__linevar.set(info.o_port & LINE_OUT)
# volume
self.__scalevar.set(info.o_gain)
def __pushtodev(self, event=None):
info = self.__devctl.getinfo()
info.o_port = self.__spkvar.get() + \
self.__headvar.get() + \
self.__linevar.get()
info.i_port = self.__inputvar.get()
info.o_gain = self.__scalevar.get()
try:
self.__devctl.setinfo(info)
except sunaudiodev.error, msg:
# TBD: what to do? it's probably temporary.
pass
def __getset(self, var, onvalue):
if var.get() == onvalue:
var.set(0)
else:
var.set(onvalue)
self.__pushtodev()
def __none(self, event=None):
self.__inputvar.set(0)
self.__pushtodev()
def __mic(self, event=None):
self.__getset(self.__inputvar, MICROPHONE)
def __linein(self, event=None):
self.__getset(self.__inputvar, LINE_IN)
def __cd(self, event=None):
self.__getset(self.__inputvar, CD)
def __speaker(self, event=None):
self.__getset(self.__spkvar, SPEAKER)
def __headphones(self, event=None):
self.__getset(self.__headvar, HEADPHONE)
def __lineout(self, event=None):
self.__getset(self.__linevar, LINE_OUT)
def __volume(self, event=None):
self.__pushtodev()
def start(self):
self.__keepalive()
self.__tkroot.mainloop()
class Helpwin:
def __init__(self, master, quitfunc):
from Tkinter import *
self.__root = root = Toplevel(master, class_='Audiopy')
root.protocol('WM_DELETE_WINDOW', self.__withdraw)
root.title('Audiopy Help Window')
root.iconname('Audiopy Help Window')
root.bind('<Alt-q>', quitfunc)
root.bind('<Alt-Q>', quitfunc)
root.bind('<Alt-w>', self.__withdraw)
root.bind('<Alt-W>', self.__withdraw)
# more elaborate help is available in the README file
readmefile = os.path.join(sys.path[0], 'README')
try:
fp = None
try:
fp = open(readmefile)
contents = fp.read()
# wax the last page, it contains Emacs cruft
i = contents.rfind('\f')
if i > 0:
contents = contents[:i].rstrip()
finally:
if fp:
fp.close()
except IOError:
sys.stderr.write("Couldn't open audiopy's README, "
'using docstring instead.\n')
contents = __doc__ % globals()
self.__text = text = Text(root, relief=SUNKEN,
width=80, height=24)
text.insert(0.0, contents)
scrollbar = Scrollbar(root)
scrollbar.pack(fill=Y, side=RIGHT)
text.pack(fill=BOTH, expand=YES)
text.configure(yscrollcommand=(scrollbar, 'set'))
scrollbar.configure(command=(text, 'yview'))
def __withdraw(self, event=None):
self.__root.withdraw()
def deiconify(self):
self.__root.deiconify()
def usage(code, msg=''):
print __doc__ % globals()
if msg:
print msg
sys.exit(code)
def main():
#
# Open up the audio control device and query for the current output
# device
device = sunaudiodev.open('control')
if len(sys.argv) == 1:
# GUI
w = MainWindow(device)
try:
w.start()
except KeyboardInterrupt:
pass
return
# spec: LONG OPT, SHORT OPT, 0=input,1=output, MASK
options = [('--microphone', '-m', 0, MICROPHONE),
('--linein', '-i', 0, LINE_IN),
('--headphones', '-p', 1, HEADPHONE),
('--speaker', '-s', 1, SPEAKER),
('--lineout', '-o', 1, LINE_OUT),
]
# See the comment above about `CD'
try:
options.append(('--cd', '-c', 0, CD))
except NameError:
pass
info = device.getinfo()
# first get the existing values
i = 0
while i < len(sys.argv)-1:
i = i + 1
arg = sys.argv[i]
if arg in ('-h', '--help'):
usage(0)
# does not return
elif arg in ('-g', '--gain'):
gainspec = '<missing>'
try:
gainspec = sys.argv[i+1]
gain = int(gainspec)
except (ValueError, IndexError):
usage(1, 'Bad gain specification: ' + gainspec)
info.o_gain = gain
i = i + 1
continue
elif arg in ('-v', '--version'):
print '''\
audiopy -- a program to control the Solaris audio device.
Contact: Barry Warsaw
Email: bwarsaw@python.org
Version: %s''' % __version__
sys.exit(0)
for long, short, io, mask in options:
if arg in (long, short):
# toggle the option
if io == 0:
info.i_port = info.i_port ^ mask
else:
info.o_port = info.o_port ^ mask
break
val = None
try:
if arg[:len(long)+1] == long+'=':
val = int(arg[len(long)+1:])
elif arg[:len(short)+1] == short+'=':
val = int(arg[len(short)+1:])
except ValueError:
usage(1, msg='Invalid option: ' + arg)
# does not return
if val == 0:
if io == 0:
info.i_port = info.i_port & ~mask
else:
info.o_port = info.o_port & ~mask
break
elif val == 1:
if io == 0:
info.i_port = info.i_port | mask
else:
info.o_port = info.o_port | mask
break
# else keep trying next option
else:
usage(1, msg='Invalid option: ' + arg)
# now set the values
try:
device.setinfo(info)
except sunaudiodev.error, (code, msg):
if code <> errno.EINVAL:
raise
device.close()
if __name__ == '__main__':
main()