foobazdmx/dmx.py

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5.2 KiB
Python
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import socket
import struct
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import sys
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from threading import Thread
from time import sleep
from typing import Union
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from animation import Animation, Off, RandomSingle, Steady, FadeTo, RotatingRainbow, Chase, TwoColor, Caramelldansen
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def ledlog(value):
return int(pow(float(value) / 255.0, 2) * 255)
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class RGB:
def __init__(self, dmx, slot, offset=0):
self.dmx = dmx
self.slot = slot
self.offset = offset
def rgb(self, color):
(r, g, b) = color
self.dmx.set(self.slot + self.offset + 0, ledlog(r))
self.dmx.set(self.slot + self.offset + 1, ledlog(g))
self.dmx.set(self.slot + self.offset + 2, ledlog(b))
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class Bar252(RGB):
def __init__(self, dmx, slot=1):
super(Bar252, self).__init__(dmx, slot, 2)
dmx.set(self.slot + 0, 81)
dmx.set(self.slot + 1, 0)
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class REDSpot18RGB(RGB):
def __init__(self, dmx, slot=1):
super(REDSpot18RGB, self).__init__(dmx, slot, 1)
dmx.set(self.slot + 0, 0)
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class StairvilleLedPar56(RGB):
def __init__(self, dmx, slot=1):
super(StairvilleLedPar56, self).__init__(dmx, slot, 0)
dmx.set(self.slot + 3, 0)
dmx.set(self.slot + 4, 0)
dmx.set(self.slot + 5, 0)
dmx.set(self.slot + 6, 255)
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class ZhennbyPar(RGB):
def __init__(self, dmx, slot=1):
super(ZhennbyPar, self).__init__(dmx, slot, 1)
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dmx.set(self.slot + 0, 255)
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dmx.set(self.slot + 4, 0)
dmx.set(self.slot + 5, 0)
dmx.set(self.slot + 6, 0)
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class DMX:
def __init__(self, host, port=0x1936, universe=1, maxchan=512):
self._host = host
self._port = port
self._universe = universe
self._socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # UDP
self._socket.setblocking(False)
self._data = bytearray(maxchan)
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packet = bytearray()
packet.extend(map(ord, "Art-Net"))
packet.append(0x00) # Null terminate Art-Net
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packet.extend([0x00, 0x50]) # Opcode ArtDMX 0x5000 (Little endian)
packet.extend([0x00, 0x0e]) # Protocol version 14
self._header = packet
self._sequence = 1
self._color = (0, 0, 0)
self._animation = FadeTo((255, 255, 255))
self._rgbs = []
self._thread = None
self._updating = False
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def start(self):
if self._thread and self._thread.is_alive():
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return
self._thread = Thread(daemon=True, target=self.background)
self._updating = True
self._thread.start()
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def background(self):
while self._updating:
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self.update()
# print("updating")
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# print(self.data)
# break
sleep(1.0 / 30)
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def update(self):
if not self._animation:
return
for i in range(0, len(self._rgbs)):
self._rgbs[i].rgb(self._animation.update(i, len(self._rgbs)))
packet = self._header[:]
packet.append(self._sequence) # Sequence,
packet.append(0x00) # Physical
packet.append(self._universe & 0xFF) # Universe LowByte
packet.append(self._universe >> 8 & 0xFF) # Universe HighByte
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packet.extend(struct.pack('>h', len(self._data))) # Pack the number of channels Big endian
packet.extend(self._data)
self._socket.sendto(packet, (self._host, self._port))
# print(f"sent {len(packet)} bytes, {threading.get_native_id()}")
self._sequence += 1
if self._sequence > 255:
self._sequence = 1
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def set(self, slot, value):
self._data[slot - 1] = value
@property
def animation(self) -> str:
return self._animation.name()
@animation.setter
def animation(self, animation: Union[Animation, str]):
if isinstance(animation, str):
if animation == "off":
animation = Off()
elif animation == "chase":
animation = Chase(self._color)
elif animation == "fade":
animation = FadeTo(self._color)
elif animation == "rainbow":
animation = RotatingRainbow()
elif animation == "steady":
animation = Steady(self._color)
elif animation == "twocolor":
animation = TwoColor(self._color)
elif animation == "caramelldansen":
animation = Caramelldansen(self._color)
elif animation == "randomsingle":
animation = RandomSingle(self._color)
else:
raise ValueError(f"No such animation {animation}")
self._animation = animation
if isinstance(animation, Off):
self._updating = False
if self._thread and self._thread.is_alive():
self._thread.join()
# one frame black
self._animation = Steady((0, 0, 0))
self.update()
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self._animation = Off()
else:
self.start()
print(f"Animation: {animation}", file=sys.stderr)
@property
def color(self):
return self._color
@color.setter
def color(self, color):
if self._color != color:
self._color = color
self.animation = self.animation