Last active
July 27, 2021 20:59
-
-
Save Hermann-SW/e867acb653eabfcbba35a226d6de55dc to your computer and use it in GitHub Desktop.
Display images in Raspbian console (https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=262615)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
fb="fb0" | |
vir_siz="/sys/class/graphics/$fb/virtual_size" | |
size=`stty size < /dev/tty` | |
echo -ne "\033[6n" < /dev/tty | |
read -s -d\[ garbage < /dev/tty | |
read -s -d R pos < /dev/tty | |
python3 <(cat <<EOF | |
'''draw image in Raspbian console''' | |
import sys | |
from PIL import Image | |
def to_bgr(img): | |
'''.convert('BGR') does not work for RGB workaround''' | |
rgb_bytes = img.convert('RGB').tobytes() | |
return Image.frombytes('RGB', img.size, rgb_bytes, 'raw', 'BGR') | |
def con_show(fhandle): | |
'''refresh framebuffer, with image drawn below current command line''' | |
drows, dcols = '$size'.rstrip().split() | |
drows, dcols = int(drows), int(dcols) | |
rpos = int('$pos'.split(';')[0]) | |
right, bottom = open('$vir_siz', 'r').read().rstrip().split(',') | |
right, bottom = int(right), int(bottom) | |
fheight = int(int(bottom) / int(drows)) | |
img = Image.open(fhandle) | |
irows = int((img.size[1] - 1) / fheight + 1) | |
if irows > drows - 2: | |
irows = drows - 2 | |
if rpos + irows > drows: | |
irows = drows - rpos | |
if irows < 1: | |
print('\r \r', end='') | |
sys.exit() | |
iheight = irows * fheight | |
for prime in [13, 11, 7, 5, 3, 2]: | |
if dcols % prime != 0: | |
fill = 'abcdefghijklm'[:prime] | |
break | |
print('\r\033[5m', end='') | |
print((fill * (int(irows * dcols / prime) + 1))[:irows * dcols], end='') | |
print('\033[0m') | |
sys.stdout.flush() | |
img0 = Image.new('RGBA', [right, iheight]) | |
img0.paste(to_bgr(img)) | |
fbuf = open('/dev/$fb', 'wb') | |
fbuf.seek((rpos - 1) * fheight * right * 4) | |
fbuf.write(img0.tobytes()) | |
FROM_STDIN = len(sys.argv) == 1 or sys.argv[1] == '-' | |
con_show(sys.stdin.buffer if FROM_STDIN else open(sys.argv[1], 'rb')) | |
EOF | |
) \ | |
$1 |
Author
Hermann-SW
commented
Jul 27, 2021
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment