#!/bin/sh -e

. /lib/rcscripts/sh/error.sh

. /lib/rcscripts/sh/rc-std2parse.sh

loop_through_channels() {

	# Error messages are left to $setter. Even if $setter fails for some

	# channel, keep trying to start/stop the other channels.

	local mcast_video mcast_audio channel=0

	local setter=/usr/sbin/mcast-always-setter

	case $1 in

		start|stop)

			;

		*)

			error "loop_through_channels: invalid argument '$1'."

			;

	esac

	std2parse /etc/sysconfig/rtp.conf

	while [ $channel -lt $STD2_NETWORK_RTP_NBROFRTPGROUPS ]; do

		eval mcast_video=\$STD2_NETWORK_RTP_R${channel}_ALWAYSMULTICASTVIDEO

		[ "$mcast_video" != yes ] || $setter $1 $channel video || :

		eval mcast_audio=\$STD2_NETWORK_RTP_R${channel}_ALWAYSMULTICASTAUDIO

		[ "$mcast_audio" != yes ] || $setter $1 $channel audio || :

		channel=$(($channel + 1))

	done

}

start_always_multicast() {

	local mca_conf=/etc/dynamic/mcast-always.conf

	# rm cleans any pipeline id if Always Multi. was not properly stopped.

	rm -f $mca_conf ||

		error "start_always_multicast: failed to remove '$mca_conf'."

	loop_through_channels start

}

case $1 in

	start)

		start_always_multicast

		;

	stop)

		loop_through_channels $1

		;

	*)

		error "Usage: $0 {start|stop}"

		;

esac