hmahadik

var zmq = require('zeromq');

/* ZMQ Router */

var router_addr = 'tcp://0.0.0.0:5554'
var router_options = {
  identity: "SourceFrame"
}
var router = zmq.socket('router', router_options);
router.bindSync(router_addr);

hmahadik

/*
  ./zmqrouter
  identity: SinkFrame
  msg: Connect
  identity: SinkFrame
  msg: Connect
  identity: SinkFrame
  msg: Connect
*/

hmahadik

#!/bin/bash
set -eux

echo "setting 27 inch 4K monitor"
xrandr --output DisplayPort-0 --mode 3840x2160 --scale "1.5x1.5" --rate 60 --primary

echo "setting 24 inch 1080p monitor"
xrandr --output HDMI-A-0 --mode 1920x1080 --scale "2x2" --pos 5760x0

echo "setting global scaling to 2x"

hmahadik

import cv2
import time

def measureDecodeTimeMs(src):
  cap = cv2.VideoCapture(src)
  for i in range(10):
    a = time.time()
    ok, frame = cap.read()
    if not ok:
    	print("Error: Unable to read frame")

hmahadik

#!/bin/bash
set -eux
cd /tmp
rm -rfv docker*
wget -O /tmp/docker.tgz https://download.docker.com/linux/static/stable/aarch64/docker-20.10.6.tgz
tar xvf docker.tgz
mv -v docker/* /usr/bin
rm -rfv docker*
# sed 's/exit 0/dockerd\&\nexit 0/' /etc/rc.local >> /etc/rc.local
echo "Done."

hmahadik

# i.MX 8M Plus
# USB camera h264 RTP stream
# Sending
gst-launch-1.0 -v v4l2src ! video/x-h264,width=1920,height=1080,framerate=30/1 ! queue ! vpudec ! queue ! clockoverlay ! queue ! vpuenc_h264 ! h264parse ! rtph264pay config-interval=10 pt=96 ! udpsink host=192.168.1.214 port=5000 sync=false
# Receiving
gst-launch-1.0.exe -vvv udpsrc port=5000 caps="application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, payload=(int)96" ! rtph264depay ! decodebin ! autovideosink

# Convert image sequence (.jpg files) into an mkv
 gst-launch-1.0 multifilesrc location="%d.jpg" index=0  ! image/jpeg,width=1920,height=1080,framerate=25/1 ! jpegdec ! videoconvert ! videorate ! queue ! vpuenc_h264 ! h264parse ! matroskamux ! filesink location="2220_imx8mp.mkv"

hmahadik

import pyaudio
import math
import struct
import playsound

CHUNK = 2048
THRESHOLD = 70
REFERENCE_LEVEL = 0.00005

def rms( data ):

hmahadik

from tflite_runtime import interpreter
import numpy as np
import time
i = interpreter.Interpreter("mobilenet_v1_1_224.tflite")
input_details = i.get_input_details()
output_details = i.get_output_details()
input_shape = input_details[0]['shape']
input_data = np.array(np.random.random_sample(input_shape), dtype=np.float32)
i.set_tensor(input_details[0]['index'], input_data)
t1=time.time(); i.invoke(); t2=time.time(); print(f"Warm-up time: {1000.0*(t2-t1)} ms")

hmahadik

#!/bin/bash
# heavily borrowed from mdegans/docker-tegra-ubuntu
set -eux
wget https://repo.download.nvidia.com/jetson/jetson-ota-public.asc -O /etc/apt/trusted.gpg.d/jetson-ota-public.asc
chmod 644 /etc/apt/trusted.gpg.d/jetson-ota-public.asc
apt-get update && apt-get install -y --no-install-recommends ca-certificates
echo "deb https://repo.download.nvidia.com/jetson/common r32.4 main" > nvidia-l4t-apt-source.list
echo "deb https://repo.download.nvidia.com/jetson/t194 r32.4 main" >> nvidia-l4t-apt-source.list
mv nvidia-l4t-apt-source.list /etc/apt/sources.list.d/
apt-get update

hmahadik

let interval = setInterval(()=>{
    let img = document.getElementsByTagName("img").item(0);
    img.src = img.src;
    console.log("Reloaded. Next reload in 5s.");
}, 5000);