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import colorsys
import numpy as np
from itertools import product
from ctypes import c_size_t, c_uint8, c_void_p, c_float, CDLL, Structure, POINTER
import time
CRATE_WIDTH = 5
CRATE_HEIGHT = 4
CRATES_X = 8
CRATES_Y = 4
DISPLAY_WIDTH = CRATES_X*CRATE_WIDTH
DISPLAY_HEIGHT = CRATES_Y*CRATE_HEIGHT
CRATE_SIZE = CRATE_WIDTH*CRATE_HEIGHT*3
FRAME_SIZE = DISPLAY_WIDTH*DISPLAY_HEIGHT
# Gamma factor
GAMMA = 2.5
# Brightness of the LEDs in percent. 1.0 means 100%.
BRIGHTNESS = 0.2
ml = CDLL('./libml.so')
ml.matelight_open.restype = c_void_p
if ml.matelight_usb_init():
raise OSError('Cannot initialize USB library')
matelights = ml.matelight_open()
if matelights is None:
raise ImportError('Cannot open any Mate Light devices')
def sendframe(framedata):
""" Send a frame to the display
The argument contains a h * w array of 3-tuples of (r, g, b)-data or 4-tuples of (r, g, b, a)-data where the a
channel is ignored.
"""
# just use the first Mate Light available
w,h,c = framedata.shape
buf = framedata.ctypes.data_as(POINTER(c_uint8))
ml.matelight_send_frame(matelights, buf, c_size_t(CRATES_X), c_size_t(CRATES_Y), c_float(BRIGHTNESS), c == 4)
if __name__ == '__main__':
#foo = np.array([[(0, 0, 0, 0)]*DISPLAY_WIDTH]*DISPLAY_HEIGHT)
#bar = np.array([[(255, 0, 255, 0)]*DISPLAY_WIDTH]*DISPLAY_HEIGHT)
x,y = 0,0
while True:
x += 1
if x == DISPLAY_WIDTH:
x = 0
y += 1
if y == DISPLAY_HEIGHT:
y = 0
foo = np.array([[(64, 0, 0, 255)]*DISPLAY_WIDTH]*DISPLAY_HEIGHT, dtype=np.uint8)
foo[y,x,:] = (0,64,0,255)
#from terminal import printframe
sendframe(foo)
#printframe(foo)
#sendframe(bar)
time.sleep(0.1)
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