#!/usr/bin/env bash
#
# ------------------------------------------------------------------
#     made by sputnick in da FreAkY lAb (c) 2010
#      gilles.quenot <AT> gmail <DOT> com
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of version 2 of the GNU General Public
#    License published by the Free Software Foundation.
#         (see http://www.gnu.org/licenses/gpl.html).
# ------------------------------------------------------------------
#                                      ,,_
#                                     o"  )@
#                                      ''''
# ------------------------------------------------------------------
#
# $Date: 2010-07-14 20:12:46 +0200 (mer. 14 juil. 2010) $
#
# -----8<--------------------------------------------------------
# see http://wiki.ekiga.org/index.php/Audio_setup#Audio_tricks
# -----8<--------------------------------------------------------
# **PLEASE EDIT THIS VARIABLES TO FIT YOUR NEEDS**

# volume controls to set ( see alsamixer )
EkigaControls="Master PCM Front"

# volume control to mute when calling
EkigaControlMute="Front"

# the default volume level in %
EkigaControlsVol=50

# the capture control
EkigaControlCapture="Capture"

# alsa hardware device
EkigaHardwareDevice="hw:0"

# the Ekiga binary path
EkigaPath="/usr/bin/ekiga"

# The sound applications to stops on incoming calls
# mplayer will be really killed because it can't be "paused"
# with a SITSTOP signal, so, don't put it in the list bellow
EkigaSoundSoftKill="vlc nsplugin amarok kaffeine totem xmms"

# -----8<--------------------------------------------------------
# MAIN CODE
# Don't edit if you don't know what you are doing

readlink -f /proc/$$/exe | grep &>/dev/null bash || {
    echo >&2 "Hey dude ! You must call $0 with bash ! WTF ?!"
    exit 2
}

. ~/.bashrc || . /etc/profile

rmdir &>/dev/null /tmp/z95ds8rm
trap 'retval=$?; rmdir &>/dev/null /tmp/z95ds8rm; exit $retval' 0 1 2 3 15

Die()
{
	tput setaf 1
	echo >&2 "$@"
	tput sgr0
	exit 1
}

EkigaKilla()
{
	# if there's another instance, don't make war
	[[ -d /tmp/z95ds8rm ]] && return 0

	# simple lock
	mkdir /tmp/z95ds8rm

	if [[ $EkigaSoundToKillMplayer ]]; then
		commandPlayer=$(ps -o command $EkigaSoundToKillMplayer | tail -1)
		pkill mplayer
	fi

	# pause some sound applications
	[[ ${EkigaSoundToKill[@]} ]] && kill -SIGSTOP ${EkigaSoundToKill[@]}

	# prompt user to re-play sounds via zenity dialog box
	if LC_ALL=C zenity --question --title ekiga --text "Do you want sound application to continue ?\nYES to continue, NO to kill the processus"; then
		# unmute volume controls if reply is "yes"
		for control in $EkigaControls; do
			amixer &>/dev/null -D$EkigaHardwareDevice set "$control",0 ${EkigaControlsVol}%,${EkigaControlsVol}% unmute
		done

		# let's continue playing sounds
		[[ "$commandPlayer" ]] && eval "$commandPlayer &>/dev/null &"
		[[ $MyEkiPids ]] && kill -SIGCONT $MyEkiPids
		rmdir &>/dev/null /tmp/z95ds8rm
	else
		# "no" reply
		kill $MyEkiPids
		rmdir &>/dev/null /tmp/z95ds8rm
	fi
}

# various system checks
(( $(printf "%s\n" /dev/snd/* | wc -l) > 2 )) || Die "You must use a working alsa configuration"
[[ -x $EkigaPath ]] || Die "You must have ekiga installed and 'EkigaPath' variable set in $0"
type &>/dev/null zenity || Die "You must install zenity"
type &>/dev/null inotifywait || Die "You must install inotify"
type &>/dev/null sox || Die "You must install sox"
type &>/dev/null amixer || Die "You must install alsa-utils"

# get the call sound file path from ekiga XML configuration
EkigaSound=$(gconftool-2 -g /apps/ekiga/general/sound_events/incoming_call_sound) || Die "Can't read XML ekiga configuration !"

# start ekiga in the background and stop the whole script when ekiga dies
{ $EkigaPath "$@"; pkill -f "inotifywait -q -r -m $EkigaSound"; kill $$; } &

# how many seconds is required to play the ring file ?
set +x; exec 3>&1 4>&2
EkigaSoundTime=$( { TIMEFORMAT='%E'; time play -q "$EkigaSound" vol 0 1>&3 2>&4; } 2>&1 )
exec 3>&- 4>&-
grep "^[0-9]+$" <<< $EkigaSoundTime || EkigaSoundTime=1.8

# listening events on sound file with inotify to know when someone call us, then,
# let's set volumes.
inotifywait -q -r -m "$EkigaSound" |
    while read a; do
		if [[ $a == *OPEN* ]]; then
			EkigaSoundToKillMplayer="$(pgrep mplayer)"
			EkigaSoundToKill=( $(for i in $EkigaSoundSoftKill; do pgrep $i; done) )
			[[ ${EkigaSoundToKill[@]} || $EkigaSoundToKillMplayer ]] && EkigaKilla &
			
			# makes alsa ringing in all desired volume controls
			for control in $EkigaControls; do
				amixer &>/dev/null -D$EkigaHardwareDevice set "$control",0 ${EkigaControlsVol}%,${EkigaControlsVol}% unmute
			done

			# sleeping while the sound is playing
			sleep $EkigaSoundTime

			amixer &>/dev/null -D$EkigaHardwareDevice set "$EkigaControlCapture" 85% cap
			amixer &>/dev/null -D$EkigaHardwareDevice set "$EkigaControlMute" mute
		fi

    done

# vim:ts=4:sw=4