LJ/ethertools/sitter.py

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Python
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2020-09-22 23:27:53 +00:00
#!/usr/bin/python
# j4cDAC "sitter"
#
# Copyright 2012 Jacob Potter
#
# 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, version 3.
#
# 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 socket
import time
import struct
def pack_point(x, y, r, g, b, i = -1, u1 = 0, u2 = 0, flags = 0):
"""Pack some color values into a struct dac_point.
Values must be specified for x, y, r, g, and b. If a value is not
passed in for the other fields, i will default to max(r, g, b); the
rest default to zero.
"""
if i < 0:
i = max(r, g, b)
return struct.pack("<HhhHHHHHH", flags, x, y, i, r, g, b, u1, u2)
class ProtocolError(Exception):
"""Exception used when a protocol error is detected."""
pass
class Status(object):
"""Represents a status response from the DAC."""
def __init__(self, data):
"""Initialize from a chunk of data."""
self.protocol_version, self.le_state, self.playback_state, \
self.source, self.le_flags, self.playback_flags, \
self.source_flags, self.fullness, self.point_rate, \
self.point_count = \
struct.unpack("<BBBBHHHHII", data)
def dump(self, prefix = " - "):
"""Dump to a string."""
lines = [
"Light engine: state %d, flags 0x%x" %
(self.le_state, self.le_flags),
"Playback: state %d, flags 0x%x" %
(self.playback_state, self.playback_flags),
"Buffer: %d points" %
(self.fullness, ),
"Playback: %d kpps, %d points played" %
(self.point_rate, self.point_count),
"Source: %d, flags 0x%x" %
(self.source, self.source_flags)
]
for l in lines:
print prefix + l
class BroadcastPacket(object):
"""Represents a broadcast packet from the DAC."""
def __init__(self, st, ip=None):
"""Initialize from a chunk of data."""
self.mac = st[:6]
self.hw_rev, self.sw_rev, self.buffer_capacity, \
self.max_point_rate = struct.unpack("<HHHI", st[6:16])
self.status = Status(st[16:36])
self.ip = ip
def dump(self, prefix = " - "):
"""Dump to a string."""
lines = [
"MAC: " + ":".join(
"%02x" % (ord(o), ) for o in self.mac),
"HW %d, SW %d" %
(self.hw_rev, self.sw_rev),
"Capabilities: max %d points, %d kpps" %
(self.buffer_capacity, self.max_point_rate)
]
for l in lines:
print prefix + l
self.status.dump(prefix)
def macstr(self):
return "".join("%02x" % (ord(c), ) for c in self.mac)
class DAC(object):
"""A connection to a DAC."""
def got_broadcast(self, bp):
self.last_broadcast = bp
self.last_broadcast_time = time.time()
def read(self, l):
"""Read exactly length bytes from the connection."""
while l > len(self.buf):
self.buf += self.conn.recv(4096)
obuf = self.buf
self.buf = obuf[l:]
return obuf[:l]
def readresp(self, cmd):
"""Read a response from the DAC."""
data = self.read(22)
response = data[0]
cmdR = data[1]
status = Status(data[2:])
# status.dump()
if cmdR != cmd:
raise ProtocolError("expected resp for %r, got %r"
% (cmd, cmdR))
if response != "a":
raise ProtocolError("expected ACK, got %r"
% (response, ))
self.last_status = status
return status
def __init__(self, macstr, bp):
self.macstr = macstr
self.firmware_string = "-"
self.got_broadcast(bp)
try:
t1 = time.time()
self.connect(self.last_broadcast.ip[0])
t = time.time() - t1
self.conn_status = "ok (%d ms)" % (t * 500)
if self.last_broadcast.sw_rev < 2:
self.firmware_string = "(old)"
else:
self.conn.sendall('v')
self.firmware_string = self.read(32).replace("\x00", " ").strip()
except Exception, e:
self.conn_status = str(e)
def connect(self, host, port = 7765):
"""Connect to the DAC over TCP."""
conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
conn.settimeout(0.2)
conn.connect((host, port))
self.conn = conn
self.buf = ""
# Read the "hello" message
first_status = self.readresp("?")
first_status.dump()
def begin(self, lwm, rate):
cmd = struct.pack("<cHI", "b", lwm, rate)
self.conn.sendall(cmd)
return self.readresp("b")
def update(self, lwm, rate):
cmd = struct.pack("<cHI", "u", lwm, rate)
self.conn.sendall(cmd)
return self.readresp("u")
def encode_point(self, point):
return pack_point(*point)
def write(self, points):
epoints = map(self.encode_point, points)
cmd = struct.pack("<cH", "d", len(epoints))
self.conn.sendall(cmd + "".join(epoints))
return self.readresp("d")
def prepare(self):
self.conn.sendall("p")
return self.readresp("p")
def stop(self):
self.conn.sendall("s")
return self.readresp("s")
def estop(self):
self.conn.sendall("\xFF")
return self.readresp("\xFF")
def clear_estop(self):
self.conn.sendall("c")
return self.readresp("c")
def ping(self):
self.conn.sendall("?")
return self.readresp("?")
def play_stream(self, stream):
# First, prepare the stream
if self.last_status.playback_state == 2:
raise Exception("already playing?!")
elif self.last_status.playback_state == 0:
self.prepare()
started = 0
while True:
# How much room?
cap = 1799 - self.last_status.fullness
points = stream.read(cap)
if cap < 100:
time.sleep(0.005)
cap += 150
# print "Writing %d points" % (cap, )
t0 = time.time()
self.write(points)
t1 = time.time()
# print "Took %f" % (t1 - t0, )
if not started:
self.begin(0, 30000)
started = 1
def find_dac():
"""Listen for broadcast packets."""
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(("0.0.0.0", 7654))
while True:
data, addr = s.recvfrom(1024)
bp = BroadcastPacket(data)
print "Packet from %s: " % (addr, )
bp.dump()
from Tkinter import *
import socket
import Queue
import thread
import time
class DacDisplay(LabelFrame):
def __init__(self, master):
LabelFrame.__init__(self, master, width=600, height=400)
self.grid_propagate(0)
Label(self, text="IP Address:").grid(row=0, column=0, sticky=N+E)
Label(self, text="Version:").grid(row=1, column=0, sticky=N+E)
Label(self, text="Status:").grid(row=2, column=0, sticky=N+E)
Label(self, text="Source:").grid(row=3, column=0, sticky=N+E)
Label(self, text="Network:").grid(row=4, column=0, sticky=N+E)
Label(self, text="Firmware:").grid(row=5, column=0, sticky=N+E)
self.iplabel = Label(self, text = "")
self.iplabel.grid(row=0, column=1, sticky=N+W)
self.verslabel = Label(self, text = "")
self.verslabel.grid(row=1, column=1, sticky=N+W)
self.stlabel = Label(self, text = "")
self.stlabel.grid(row=2, column=1, sticky=N+W)
self.srclabel = Label(self, text = "")
self.srclabel.grid(row=3, column=1, sticky=N+W)
self.netlabel = Label(self, text = "")
self.netlabel.grid(row=4, column=1, sticky=N+W)
self.fwlabel = Label(self, text = "")
self.fwlabel.grid(row=5, column=1, sticky=N+W)
self.display_none()
def display_none(self):
self['text'] = "Ether Dream"
for l in self.iplabel, self.verslabel, self.stlabel, self.srclabel, self.netlabel, self.fwlabel:
l['text'] = ""
def display_dac(self, dac):
b = dac.last_broadcast
self['text'] = "Ether Dream " + b.macstr()[6:]
self.iplabel['text'] = str(b.ip[0])
self.verslabel['text'] = "hardware %d, software %d" % (b.hw_rev, b.sw_rev)
st_str = ""
if b.status.le_state == 0:
st_str = "online, "
else:
st_str = "ESTOP ACTIVE (%d), " % (b.status.le_flags, )
if b.status.playback_state == 0:
st_str += "idle"
elif b.status.playback_state == 1:
st_str += "prepared"
elif b.status.playback_state == 2:
st_str += "playing (%d buffered, %d played)" % (b.status.fullness, b.status.point_count)
else:
st_str += "DAC state %d" % (b.status.playback_state, )
if b.status.point_rate:
st_str += ", %d pps" % (b.status.point_rate)
self.stlabel['text'] = st_str
if b.status.source == 0:
src_str = "network"
elif b.status.source == 1:
src_str = "file playback: %s, repeat %s" % (
b.status.source_flags & 1 and "playing" or "not playing",
b.status.source_flags & 2 and "on" or "off"
)
elif b.status.source == 2:
src_str = "abstract generator: %s" % (
b.status.source_flags & 1 and "playing" or "not playing",
)
else:
src_str = "unknown %d" % (b.status.source)
self.srclabel['text'] = src_str
self.netlabel['text'] = dac.conn_status
self.fwlabel['text'] = dac.firmware_string
class DacTracker(Listbox):
def __init__(self, master, *args, **kwargs):
Listbox.__init__(self, master, *args, **kwargs)
self.dac_list = []
self.dac_macstr_map = {}
self.bind("<<ListboxSelect>>", self.update_selection)
def update_selection(self, lb=None):
if self.dac_display:
try:
dac_obj = self.dac_list[self.index(ACTIVE)]
except:
return
self.dac_display.display_dac(dac_obj)
def got_packet(self, bp):
macstr = bp.macstr()
if macstr not in self.dac_macstr_map:
new_dac = DAC(macstr, bp)
self.insert(END, macstr[6:])
self.dac_list.append(new_dac)
self.dac_macstr_map[macstr] = new_dac
dac_obj = new_dac
else:
dac_obj = self.dac_macstr_map[macstr]
dac_obj.got_broadcast(bp)
if len(self.dac_list) == 1:
self.selection_set(0)
self.update_selection()
def check_on_dac():
if time.time() - dac_obj.last_broadcast_time < 2:
return
idx = self.dac_list.index(dac_obj)
self.dac_list.remove(dac_obj)
del self.dac_macstr_map[macstr]
self.delete(idx)
self.dac_display.display_none()
self.after(2000, check_on_dac)
# Set up the basic window
root = Tk()
root.title("Ether Dream")
root.resizable(FALSE, FALSE)
frame = Frame(root)
frame.grid()
disp = DacDisplay(root)
disp.grid(row=0, column=1, padx=5, pady=5)
tracker = DacTracker(root, height=22)
tracker.grid(row=0, column=0, padx=5, pady=5)
tracker.dac_display = disp
# Set up queue checker
packet_queue = Queue.Queue()
def queue_check():
try:
while True:
data, addr = packet_queue.get_nowait()
tracker.got_packet(BroadcastPacket(data, addr))
except Queue.Empty:
root.after(100, queue_check)
root.after(100, queue_check)
# Set up listening socket and thread
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(("0.0.0.0", 7654))
def socket_thread():
while True:
packet_queue.put(s.recvfrom(1024))
thread.start_new(socket_thread, ())
root.mainloop()