41 lines
926 B
Bash
41 lines
926 B
Bash
|
#!/bin/sh
|
||
|
|
set -eo pipefail
|
||
|
|
|
||
|
|
ssh_host="mohowzeg.usb"
|
||
|
|
landscape=true
|
||
|
|
|
||
|
|
bin_head="/opt/bin/head"
|
||
|
|
bin_zstd="/opt/bin/zstd"
|
||
|
|
bin_ncat="/opt/bin/netcat"
|
||
|
|
width=1408
|
||
|
|
height=1872
|
||
|
|
bytes_per_pixel=2
|
||
|
|
|
||
|
|
if ! ssh "$ssh_host" true; then
|
||
|
|
echo "$ssh_host unreachable"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
for prog in $bin_head $bin_zstd $bin_ncat; do
|
||
|
|
if ! ssh "$ssh_host" "[ -f $prog ]"; then
|
||
|
|
echo "Program $prog is not present on $ssh_host."
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
|
||
|
|
window_bytes="$(($width*$height*$bytes_per_pixel))"
|
||
|
|
landscape_param="$($landscape && echo '-vf transpose=1')"
|
||
|
|
read_loop="while $bin_head -c $window_bytes /dev/fb0; do sleep .03; done | $bin_zstd"
|
||
|
|
|
||
|
|
ssh "$ssh_host" "$read_loop" \
|
||
|
|
| zstd -d \
|
||
|
|
| pv - \
|
||
|
|
| ffplay -vcodec rawvideo \
|
||
|
|
-loglevel error \
|
||
|
|
-f rawvideo \
|
||
|
|
-pixel_format gray16le \
|
||
|
|
-video_size "$width,$height" \
|
||
|
|
$landscape_param \
|
||
|
|
-i -
|