gst-bitrate-parser.awk

gst-bitrate-parser.awk

#! /usr/bin/env -S awk -f

# ./bitrate_parser.awk
# Highlight parsed values inside GstIdentity chain messages
# Usage:
#   gst-launch-1.0 -v foo ! identity silent=false ! bar | ./bitrate_parser.awk

BEGIN {
    GREEN  = "\033[1;32m"
    RESET  = "\033[0m"
}

# Print input as usual
{
    print
}

# On successfull parse, add a line
/chain/ && /bytes,/ && /duration:/ {

    raw = $0
    highlighted = raw

    bytes = 0
    duration = 0.0

    # Extract byte count
    if (match(raw, /([0-9]+) bytes/, b)) {
        bytes = b[1]
    }

    # Extract duration in seconds
    if (match(raw, /duration: 0:00:([0-9.]+)/, d)) {
        duration = d[1]
    }

    if (duration > 0) {
        mbps = (bytes * 8) / (duration * 1000000)
    } else {
        mbps = 0
    }

    printf "%sParsed: %d bytes / %.4f s = %.2f Mbit per second %s\n", GREEN, bytes, duration, mbps, RESET
    printf "%sParsed: %d bytes / %.4f s = %.2f Mbit per second %s\n", GREEN, bytes, duration, mbps, RESET
}