forked from LADI/laditools
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g15ladi
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g15ladi
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#!/usr/bin/python
# LADITools - Linux Audio Desktop Integration Tools
# g15ladi - A jack monitor for the g15 keyboard that uses the dbus interface
# Copyright (C) 2012 Alessio Treglia <quadrispro@ubuntu.com>
# Copyright (C) 2007-2010, Marc-Olivier Barre <marco@marcochapeau.org>
# Copyright (C) 2007-2009, Nedko Arnaudov <nedko@arnaudov.name>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
import os
import time
import signal
import argparse
import laditools
pipe_filename = "/dev/shm/g15log.pipe"
class g15composer (object):
text_justify_left = 0
text_justify_center = 1
text_justify_right = 2
text_size_small = 0
#text_size_medium = 1
text_size_large = 2
width = 160
height = 43
def __init__(self, pipe_filename, large):
if large:
self.size = self.text_size_large
self.max_lines = 5 # 7 for small, 5 for large
self.max_chars = 20
else:
self.size = self.text_size_small
self.max_lines = 7
self.max_chars = 40
self.pipe_filename = pipe_filename
self.pid = os.spawnlp(os.P_NOWAIT, 'g15composer', 'g15composer', self.pipe_filename)
#print "g15composer started"
while not os.access(self.pipe_filename, os.F_OK):
#print "Waiting pipe to appear..."
time.sleep(1)
self.pipe = file(self.pipe_filename, "w")
os.remove(self.pipe_filename)
#print "pipe unlinked"
def __del__(self):
self.pipe.close()
#print "stopping g15composer..."
os.kill(self.pid, signal.SIGTERM)
os.waitpid(self.pid, 0)
#print "g15composer stopped"
def send_message(self, message):
#print message,
self.pipe.write(message)
self.pipe.flush()
def draw_lines(self, lines, x, y, justify):
message = 'TO %u %u %u %u' % (x, y, self.size, justify)
for line in lines:
message += ' "%s "' % line.replace('"', "'").strip("\n")
message += "\n"
self.send_message(message)
def draw_lines(self, lines, x, y, justify):
message = 'TO %u %u %u %u' % (x, y, self.size, justify)
for line in lines:
message += ' "%s "' % line.replace('"', "'").strip("\n")
message += "\n"
self.send_message(message)
def clear(self, ink):
if ink:
message = 'PC 1\n'
else:
message = 'PC 0\n'
self.send_message(message)
def draw_bar(self, x, y, width, height, ink, fill):
if width < 0:
width = self.width - width - x - 1
else:
if width < 5:
width = 5
if height < 3:
height = 3
width -= 1
height -= 3
y += 1
if ink:
ink = 1
else:
ink = 0
self.send_message("DB %u %u %u %u %u %u %u 1\n" % (x, y, x + width, y + height, ink, fill * 1000, 1000))
class jackctl_g15(object):
def __init__(self):
self.jack = None
self.g15 = g15composer(pipe_filename, False)
self.started = False
self.ladish = None
def get_jack_info(self):
if not self.jack:
self.jack = laditools.JackController()
if not self.jack.is_started():
return False, None, None, None, None, None
realtime = self.jack.is_realtime()
load = self.jack.get_load()
xruns = self.jack.get_xruns()
if xruns == 0:
xruns_line = "no xruns"
elif xruns == 1:
xruns_line = "1 xrun"
else:
xruns_line = "%u xruns" % xruns
rate = self.jack.get_sample_rate()
if rate % 1000.0 == 0:
rate_line = "Sample rate: %.0f Khz" % (rate / 1000.0)
else:
rate_line = "Sample rate: %.1f Khz" % (rate / 1000.0)
latency_line = "Latency: %.1f ms" % self.jack.get_latency()
return True, realtime, load, xruns_line, rate_line, latency_line
def update(self):
try:
studio_name = None
if not self.ladish:
try:
self.ladish = laditools.LadishProxy()
except:
pass
try:
studio_name = self.ladish.studio_name()
except:
pass
started, realtime, load, xruns_line, rate_line, latency_line = self.get_jack_info()
if started:
self.started = True
elif self.started:
self.g15.clear(False)
self.started = False
if self.ladish:
if studio_name:
status_line = '"' + studio_name + '"'
if started:
status_line += " started"
if realtime:
status_line += " (RT)"
else:
status_line += " stopped"
else:
if started:
status_line = "ladish is sick, jack started w/o studio"
else:
status_line = "No studio loaded"
else:
status_line = "JACK"
if started:
if realtime:
status_line += " started in realtime mode"
else:
status_line += " started in non-realtime mode"
else:
status_line += " stopped"
except Exception, e:
print repr(e)
status_line = "JACK cannot be connected"
if self.jack:
self.g15.clear(False)
self.jack = None
self.started = False
self.g15.draw_lines([status_line], 0, 0, self.g15.text_justify_left)
if self.started:
self.g15.draw_lines(["DSP load"], 0, 12, self.g15.text_justify_left)
self.g15.draw_bar(35, 12, 95, 5, True, load / 100.0)
self.g15.draw_lines(["%.3f%%" % load], 135, 12, self.g15.text_justify_left)
self.g15.draw_lines([xruns_line], 0, 22, self.g15.text_justify_left)
self.g15.draw_lines([rate_line, latency_line], 0, 31, self.g15.text_justify_left)
def run(self):
while True:
self.update()
time.sleep(1)
del self.g15
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='JACK monitor for g15 keyboards',
epilog='This program is part of the LADITools suite.')
parser.add_argument('--version', action='version', version="%(prog)s " + laditools.get_version_string())
parser.parse_args()
jackctl_g15().run()
sys.exit(0)