101 lines
3.0 KiB
Python
101 lines
3.0 KiB
Python
import epaper
|
|
import microbmp
|
|
import time
|
|
import random
|
|
import os
|
|
import gc
|
|
|
|
gc.enable()
|
|
|
|
epd_resolution = [600, 448]
|
|
epd_colormap = [
|
|
[0x00, 0x00, 0x00], # black
|
|
[0xff, 0xff, 0xff], # white
|
|
[0x00, 0x90, 0x10], # green
|
|
[0x00, 0x00, 0xee], # blue
|
|
[0xff, 0x00, 0x00], # red
|
|
[0xff, 0xdd, 0x00], # yellow
|
|
[0xff, 0x77, 0x00], # orange
|
|
]
|
|
|
|
images = list(filter(lambda x : x.endswith(".bmp"), os.listdir()))
|
|
|
|
def init_display():
|
|
#print("ePaper init ", str(time.localtime()))
|
|
epd = epaper.EPD_5in65()
|
|
epd.fill(epd.White)
|
|
return epd
|
|
|
|
def draw_image(filename):
|
|
global epd
|
|
global epd_colormap
|
|
offset_x = 0
|
|
offset_y = 0
|
|
color_map = {}
|
|
def header_callback(header):
|
|
#print("header callback: ", str(header))
|
|
global epd_resolution
|
|
global offset_x, offset_y
|
|
w = header[0]
|
|
h = header[1]
|
|
offset_x = (epd_resolution[0] - w)//2
|
|
offset_y = (epd_resolution[1] - h)//2
|
|
def pixel_callback(x, y, color):
|
|
global epd
|
|
global epd_colormap
|
|
global offset_x, offset_y
|
|
# translate color to color index
|
|
color_index = 0
|
|
color_key = color[0] + color[1] << 8 + color[2] << 16
|
|
if color_key in color_map:
|
|
color_index = color_map[color_key]
|
|
else:
|
|
# search for the best color
|
|
best_index = 0
|
|
best_score = 1000
|
|
for index in range(len(epd_colormap)):
|
|
c1 = epd_colormap[index]
|
|
c2 = color
|
|
score = abs(c1[0] - c2[0]) + abs(c1[1] - c2[1]) + abs(c1[2] - c2[2])
|
|
if score < best_score:
|
|
best_score = score
|
|
best_index = index
|
|
if score < 10:
|
|
break
|
|
color_index = best_index
|
|
color_map[color_key] = color_index
|
|
epd.pixel(offset_x + x, offset_y + y, color_index)
|
|
def pixel_row_callback(x, y, colors):
|
|
pass
|
|
#global epd
|
|
#print("PXL ", str([color, r,g,b, pixel]))
|
|
#for i in range(len(colors)):
|
|
# epd.pixel(offset_x + x + i, offset_y + y, color_to_index(colors[i]))
|
|
|
|
#print(str(time.localtime()), " BMP ", filename, " loading")
|
|
time_start = time.ticks_ms()
|
|
epd.fill(epd.White)
|
|
microbmp.MicroBMP(header_callback=header_callback, data_callback=pixel_callback).load(filename)
|
|
time_loaded = time.ticks_ms()
|
|
print(" time to load: ", (time_loaded - time_start) / 1000, " s")
|
|
#print(str(time.localtime()), " BMP loaded")
|
|
epd.EPD_5IN65F_Display(epd.buffer)
|
|
#print(str(time.localtime()), " ePaper printed")
|
|
time_finished = time.ticks_ms()
|
|
print(" time to render: ", (time_finished - time_loaded) / 1000, " s")
|
|
|
|
|
|
# MAIN
|
|
|
|
epd = init_display()
|
|
|
|
while True:
|
|
epd.EPD_5IN65F_Init()
|
|
filename = random.choice(images)
|
|
print("TV loading image ", filename)
|
|
draw_image(filename)
|
|
print("TV showing ", filename)
|
|
epd.Sleep()
|
|
gc.collect()
|
|
epd.delay_ms(10000)
|