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#!/usr/bin/python
import pygtk, gtk, sys
from ctypes import *
try:
libpulse = cdll.LoadLibrary("../.libs/libpulse.so")
except OSError:
try:
libpulse = cdll.LoadLibrary(".libs/libpulse.so")
except OSError:
libpulse = cdll.LoadLibrary("libpulse.so")
class ChannelMap(Structure):
_fields_ = [("channels", c_ubyte),
("map", c_uint * 32)]
_to_name = libpulse.pa_channel_map_to_name
_to_name.restype = c_char_p
_to_name.argtypes = [c_void_p]
_to_pretty_name = libpulse.pa_channel_map_to_pretty_name
_to_pretty_name.restype = c_char_p
_to_pretty_name.argtypes = [c_void_p]
_snprint = libpulse.pa_channel_map_snprint
_snprint.restype = c_char_p
_snprint.argtypes = [c_char_p, c_ulong, c_void_p]
_position_to_string = libpulse.pa_channel_position_to_string
_position_to_string.restype = c_char_p
_position_to_string.argtypes = [c_uint]
_position_to_pretty_string = libpulse.pa_channel_position_to_pretty_string
_position_to_pretty_string.restype = c_char_p
_position_to_pretty_string.argtypes = [c_uint]
_can_balance = libpulse.pa_channel_map_can_balance
_can_balance.restype = c_int
_can_balance.argtypes = [c_void_p]
_can_fade = libpulse.pa_channel_map_can_fade
_can_fade.restype = c_int
_can_fade.argtypes = [c_void_p]
_parse = libpulse.pa_channel_map_parse
_parse.restype = c_void_p
_parse.argtypes = [c_void_p, c_char_p]
def to_name(this):
return this._to_name(byref(this))
def to_pretty_name(this):
return this._to_pretty_name(byref(this))
def snprint(this):
s = create_string_buffer(336)
r = this._snprint(s, len(s), byref(this))
if r is None:
return None
else:
return s.value
def position_to_string(this, pos):
return this._position_to_string(pos)
def position_to_pretty_string(this, pos):
return this._position_to_pretty_string(pos)
def can_balance(this):
return bool(this._can_balance(byref(this)))
def can_fade(this):
return bool(this._can_fade(byref(this)))
def parse(this, s):
if this._parse(byref(this), s) is None:
raise Exception("Parse failure")
class CVolume(Structure):
_fields_ = [("channels", c_ubyte),
("values", c_uint32 * 32)]
_snprint = libpulse.pa_cvolume_snprint
_snprint.restype = c_char_p
_snprint.argtypes = [c_char_p, c_ulong, c_void_p]
_max = libpulse.pa_cvolume_max
_max.restype = c_uint32
_max.argtypes = [c_void_p]
_scale = libpulse.pa_cvolume_scale
_scale.restype = c_void_p
_scale.argtypes = [c_void_p, c_uint32]
_get_balance = libpulse.pa_cvolume_get_balance
_get_balance.restype = c_float
_get_balance.argtypes = [c_void_p, c_void_p]
_get_fade = libpulse.pa_cvolume_get_fade
_get_fade.restype = c_float
_get_fade.argtypes = [c_void_p, c_void_p]
_set_balance = libpulse.pa_cvolume_set_balance
_set_balance.restype = c_void_p
_set_balance.argtypes = [c_void_p, c_void_p, c_float]
_set_fade = libpulse.pa_cvolume_set_fade
_set_fade.restype = c_void_p
_set_fade.argtypes = [c_void_p, c_void_p, c_float]
def snprint(this):
s = create_string_buffer(320)
r = this._snprint(s, len(s), byref(this))
if r is None:
return None
else:
return s.raw
def max(this):
return this._max(byref(this))
def scale(this, v):
return this._scale(byref(this), v)
def get_balance(this, cm):
return this._get_balance(byref(this), byref(cm))
def get_fade(this, cm):
return this._get_fade(byref(this), byref(cm))
def set_balance(this, cm, f):
return this._set_balance(byref(this), byref(cm), f)
def set_fade(this, cm, f):
return this._set_fade(byref(this), byref(cm), f)
cm = ChannelMap()
if len(sys.argv) > 1:
cm.parse(sys.argv[1])
else:
cm.parse("surround-51")
v = CVolume()
v.channels = cm.channels
for i in range(cm.channels):
v.values[i] = 65536/2
title = cm.to_pretty_name()
if title is None:
title = cm.snprint()
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.set_title(unicode(title))
window.set_border_width(12)
vbox = gtk.VBox(spacing=6)
channel_labels = {}
channel_scales = {}
def update_volume(update_channels = True, update_fade = True, update_balance = True, update_scale = True):
if update_channels:
for i in range(cm.channels):
channel_scales[i].set_value(v.values[i])
if update_scale:
value_scale.set_value(v.max())
if update_balance:
balance_scale.set_value(v.get_balance(cm))
if update_fade:
fade_scale.set_value(v.get_fade(cm))
def fade_value_changed(fs):
v.set_fade(cm, fade_scale.get_value())
update_volume(update_fade = False)
def balance_value_changed(fs):
v.set_balance(cm, balance_scale.get_value())
update_volume(update_balance = False)
def value_value_changed(fs):
v.scale(int(value_scale.get_value()))
update_volume(update_scale = False)
def channel_value_changed(fs, i):
v.values[i] = int(channel_scales[i].get_value())
update_volume(update_channels = False)
for i in range(cm.channels):
channel_labels[i] = gtk.Label(cm.position_to_pretty_string(cm.map[i]))
channel_labels[i].set_alignment(0, 1)
vbox.pack_start(channel_labels[i], expand=False, fill=True)
channel_scales[i] = gtk.HScale()
channel_scales[i].set_range(0, 65536)
channel_scales[i].set_digits(0)
channel_scales[i].set_value_pos(gtk.POS_RIGHT)
vbox.pack_start(channel_scales[i], expand=False, fill=True)
value_label = gtk.Label("Value")
value_label.set_alignment(0, .5)
vbox.pack_start(value_label, expand=False, fill=True)
value_scale = gtk.HScale()
value_scale.set_range(0, 65536)
value_scale.set_value_pos(gtk.POS_RIGHT)
value_scale.set_digits(0)
vbox.pack_start(value_scale, expand=False, fill=True)
balance_label = gtk.Label("Balance")
balance_label.set_alignment(0, .5)
vbox.pack_start(balance_label, expand=False, fill=True)
balance_scale = gtk.HScale()
balance_scale.set_range(-1.0, +1.0)
balance_scale.set_value_pos(gtk.POS_RIGHT)
balance_scale.set_digits(2)
vbox.pack_start(balance_scale, expand=False, fill=True)
fade_label = gtk.Label("Fade")
fade_label.set_alignment(0, .5)
vbox.pack_start(fade_label, expand=False, fill=True)
fade_scale = gtk.HScale()
fade_scale.set_range(-1.0, +1.0)
fade_scale.set_value_pos(gtk.POS_RIGHT)
fade_scale.set_digits(2)
vbox.pack_start(fade_scale, expand=False, fill=True)
window.add(vbox)
window.set_default_size(600, 50)
update_volume()
for i in range(cm.channels):
channel_scales[i].connect("value_changed", channel_value_changed, i)
fade_scale.connect("value_changed", fade_value_changed)
balance_scale.connect("value_changed", balance_value_changed)
value_scale.connect("value_changed", value_value_changed)
vbox.show_all()
if not cm.can_balance():
balance_label.hide()
balance_scale.hide()
if not cm.can_fade():
fade_label.hide()
fade_scale.hide()
window.show()
gtk.main()
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