stbt-screenshot

#!/bin/bash

# Copyright 2013 YouView TV Ltd.
# License: LGPL v2.1 or (at your option) any later version (see
# https://github.com/stb-tester/stb-tester/blob/master/LICENSE for details).

#/ usage: stbt screenshot [-h] [filename]
#/
#/ Capture a screenshot from the system-under-test to the specified filename
#/ (defaults to 'screenshot.png'), using the GStreamer source pipeline
#/ specified in your stbt config file.
#/
#/ Options:
#/   -h, --help     Show this help message and exit.

[[ "$1" == -h || "$1" == --help ]] && { grep '^#/' "$0" | cut -c4-; exit 0; }

filename=${1:-screenshot.png}

"$(dirname "$0")/stbt-run" -v --control=none --save-video= <(cat <<-EOF
	import time
	get_frame()
	if (args.source_pipeline.startswith("decklink")):
	    time.sleep(2)  # First second of Blackmagic video has purple tint
	save_frame(get_frame(), "$filename")
	print "Screenshot saved to '$filename'"
	EOF
    )