jaseg/matelight
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Now faster. And with more Jenny Holzer.

Browse source
This commit is contained in:
jaseg 2014-03-04 01:07:22 +01:00
parent bd5b1b6267
commit 7878aa1d45
10 changed files with 528 additions and 64 deletions
Download patch file Download diff file Expand all files Collapse all files

44
host/matelight.py
View file

@ -1,7 +1,8 @@
import usb
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
@ -19,7 +20,14 @@ GAMMA = 2.5
# Brightness of the LEDs in percent. 1.0 means 100%.
BRIGHTNESS = 0.2
dev = usb.core.find(idVendor=0x1cbe, idProduct=0x0003)
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
@ -27,15 +35,25 @@ def sendframe(framedata):
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.
"""
# Gamma correction
framedata = (((framedata/255) ** GAMMA) * BRIGHTNESS * 255).astype(np.uint8)
for cx, cy in product(range(CRATES_X), range(CRATES_Y)):
datar = framedata[cy*CRATE_HEIGHT:(cy+1)*CRATE_HEIGHT, cx*CRATE_WIDTH:(cx+1)*CRATE_WIDTH, :3]
data = datar.flat
if len(data) != CRATE_SIZE:
raise ValueError('Invalid frame data. Expected {} bytes, got {}.'.format(CRATE_SIZE, len(data)))
# Send framebuffer data
dev.write(0x01, bytes([0, cx, cy])+bytes(data))
# Send latch command
dev.write(0x01, b'\x01')
# just use the first Mate Light available
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), True)
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)