#!/usr/bin/python
-import pygtk, gtk
+import pygtk, gtk, sys
from ctypes import *
-libpulse = cdll.LoadLibrary("../.libs/libpulse.so")
+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),
_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))
if r is None:
return None
else:
- return s.raw
+ 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]
_set_fade.restype = c_void_p
_set_fade.argtypes = [c_void_p, c_void_p, c_float]
+ _to_dB = libpulse.pa_sw_volume_to_dB
+ _to_dB.restype = c_double
+ _to_dB.argytpes = [c_uint32]
+
def snprint(this):
s = create_string_buffer(320)
r = this._snprint(s, len(s), byref(this))
def set_fade(this, cm, f):
return this._set_fade(byref(this), byref(cm), f)
+ def to_dB(this, channel = None):
+ if channel is None:
+ return this._to_dB(this.max())
+ return this._to_dB(this.values[channel])
cm = ChannelMap()
-cm.channels = 6
-cm.map[0] = 1
-cm.map[1] = 2
-cm.map[2] = 3
-cm.map[3] = 5
-cm.map[4] = 6
-cm.map[5] = 7
-print "Channel map name: %s" % cm.to_name()
-print "Channel map mapping: %s" % cm.snprint()
+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
+ v.values[i] = 65536
-print v.max()
-print v.snprint()
-print v.get_balance(cm)
-print v.get_fade(cm)
+title = cm.to_pretty_name()
+if title is None:
+ title = cm.snprint()
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
-window.set_title(cm.to_pretty_name())
+window.set_title(unicode(title))
window.set_border_width(12)
vbox = gtk.VBox(spacing=6)
channel_labels = {}
channel_scales = {}
+channel_dB_labels = {}
def update_volume(update_channels = True, update_fade = True, update_balance = True, update_scale = True):
if update_channels:
if update_fade:
fade_scale.set_value(v.get_fade(cm))
+ for i in range(cm.channels):
+ channel_dB_labels[i].set_label("%0.2f dB" % v.to_dB(i))
+
+ value_dB_label.set_label("%0.2f dB" % v.to_dB())
+
def fade_value_changed(fs):
v.set_fade(cm, fade_scale.get_value())
update_volume(update_fade = False)
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_range(0, 65536*3/2)
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)
+ channel_dB_labels[i] = gtk.Label("-xxx dB")
+ channel_dB_labels[i].set_alignment(1, 1)
+ vbox.pack_start(channel_dB_labels[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_range(0, 65536*3/2)
value_scale.set_value_pos(gtk.POS_RIGHT)
value_scale.set_digits(0)
vbox.pack_start(value_scale, expand=False, fill=True)
+value_dB_label = gtk.Label("-xxx dB")
+value_dB_label.set_alignment(1, 1)
+vbox.pack_start(value_dB_label, expand=False, fill=True)
balance_label = gtk.Label("Balance")
balance_label.set_alignment(0, .5)
vbox.pack_start(fade_scale, expand=False, fill=True)
window.add(vbox)
-window.set_default_size(600, 400)
+window.set_default_size(600, 50)
update_volume()
balance_scale.connect("value_changed", balance_value_changed)
value_scale.connect("value_changed", value_value_changed)
-window.show_all()
+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()