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Text output to HiWatch OSD

№ 12606 В разделе Sysadmin от June 3rd, 2025,
В подшивках: Bash, Security

XML used to make API calls.

Create file hiwatch-body.tmpl with your OSD template:

<?xml version="1.0" encoding="UTF-8"?>
<TextOverlayList version="2.0" xmlns="http://www.hikvision.com/ver20/XMLSchema">
<TextOverlay>
  <id>1</id>
  <displayText>$CAM_TEXT</displayText>
  <enabled>true</enabled>
  <positionX>0</positionX>
  <positionY>576</positionY>
</TextOverlay>
</TextOverlayList>

Here: OSD coords, ID and text in $CAM_TEXT variable. Of cource, you can template anything.

Now create bash script hiwatch-set-text.sh:

#!/bin/bash

# Load data from MQTT
romashka=$(/usr/bin/mosquitto_sub -C 1 -N -h 192.168.1.9 -p 1883 -u login -P password -t "/device/48:55:19:C8:E4:0A/termo/1/data" -W 1)
zemlya=$(/usr/bin/mosquitto_sub -C 1 -N -h 192.168.1.9 -p 1883 -u login -P password -t "/device/zemlya/termo/1/data" -W 1)

# Create string with your data in variable
export CAM_TEXT="Romashka: ${romashka}, Grunt: ${zemlya}"

# Load template and add string from variable CAM_TEXT
body=$(envsubst < hiwatch-body.tmpl)

# Camera URL
url="http://192.168.3.54/ISAPI/System/Video/inputs/channels/1/overlays/text"

# Add your camera creds and send PUT request
curl -s --digest -X PUT -u login:password "$url" -d "$body"

Result:

You are great!

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