#!/bin/bash

###############################################################
#
# The MIT License
#
# Copyright (c) 2006 Olof Holmgren
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
###############################################################

###############################################################
#
# Changelog
#
# v1.1 (2006-04-22)
#   Files were named after the date and time when the TVrecord
#   script was run instead of when the recording actually took place.
#   Fixed that.
#
#   Clearer message stating that all is OK if everything was OK.
#
#   Sometimes audio and video got out of sync. Turned the quality
#   settings down a tiny bit to see if it helps.
#
# v1.0 (2006-04-20)
#   Initial version.
#   Records from a TV tuner card and saves files as mpeg4.
#   Scheduling is possible.
#
################################################################

# Settings:
DESTDIR=/home/offe/lagring/film/tv/


if [ "$1" == "-h" ] || [ "$1" == "--help" ]
    then
    echo "If you specify an output directory when calling me,"
    echo "the recorded files will end up in that directory."
    echo "If you don't, the files will end up in the default"
    echo "directory (currently $DESTDIR)"
    exit 1
fi

if [ $# -eq 1 ]
    then
    DESTDIR=$1
fi


echo ">>"
echo ">> Welcome to TVrecord v1.01"	
echo ">>"
echo ">> Files will end up in $DESTDIR"
echo ">>"

abort=0
while [ $abort -ne 1 ]
do
    echo ">> Which channel should I record from? [svt1, svt2, tv3, tv4, kanal5, eurosport, ztv, mtv, discovery, tv4+, svt24]:"

    read CHANNELNAME
    abort=1

    if [[ ("$CHANNELNAME" == "svt1") ]]
	then
	CHANNEL=E6
    elif [[ ("$CHANNELNAME" == "svt2") ]]
	then
	CHANNEL=E8
    elif [[ ("$CHANNELNAME" == "tv3") ]]
	then
	CHANNEL=E10
    elif [[ ("$CHANNELNAME" == "tv4") ]]
	then
	CHANNEL=E9
    elif [[ ("$CHANNELNAME" == "kanal5") ]]
	then
	CHANNEL=E11
    elif [[ ("$CHANNELNAME" == "eurosport") ]]
	then
	CHANNEL=S11
    elif [[ ("$CHANNELNAME" == "ztv") ]]
	then
	CHANNEL=S14
    elif [[ ("$CHANNELNAME" == "mtv") ]]
	then
	CHANNEL=S13
    elif [[ ("$CHANNELNAME" == "discovery") ]]
	then
	CHANNEL=S36
    elif [[ ("$CHANNELNAME" == "tv4+") ]]
	then
	CHANNEL=U57
    elif [[ ("$CHANNELNAME" == "svt24") ]]
	then
	CHANNEL=S12
    else
	abort=0
    fi
done

echo ">> What day and time should I start? [hh:mm <yymmdd OR month-name day>]:"
read STARTTIME

echo ">> For how long should I record? (in minutes):"
read STOPTIME


################################################################
#
# Coding options for libavcodec: (-lavcopts)
#
# Fast                       vcodec=mpeg4:mbd=2:trell:v4mv:turbo
# Realtime                   vcodec=mpeg4:mbd=2:turbo
# for interlaced material    ildct:ilme:mbd=2
#
# adevice=hw.0 means that it uses the first sound device = first soundcard
#
#################################################################

###############################################################
#
# IMPORTANT
#
# For sound to work, remember to capture from the appropriate
# channel (probably line in, done for example from alsamixer)
#
# With these MEncoder settings, TVrecord can capture video
# in realtime on a P4 1,6 GHz with 768 Mb RAM.
#
# File size is ~450 Mb/h
#
###############################################################

#

# Get hold of the date of the recording in "yyyy-mm-dd_-_hh:mm:ss" format
DATETIME=`date --date="$STARTTIME" +%F_-_%T`
 
echo "mencoder -tv driver=v4l2:device=/dev/video0:adevice=hw.0:alsa:chanlist=europe-west:norm=PAL:input=0:width=384:height=288:audiorate=48000 tv://$CHANNEL -of avi -lavcopts vcodec=mpeg4:turbo:ildct:ilme:mbd=2:acodec=ac3:abitrate=192 -ofps 25 -oac lavc -ovc lavc -endpos 00:$STOPTIME:00 -o $DESTDIR/$CHANNELNAME-$DATETIME.mpg > /dev/null" > /tmp/TVrecord.tmp 

# Convert the starttime to something that 'at' can understand (ie hh:mm mm/dd/yy)
ATTIME=`date --date="$STARTTIME" +"%H:%M %D"`

if ! at -f /tmp/TVrecord.tmp $ATTIME
    then
    echo ">> ERROR: Couldn't add job to 'at' demon."
    exit 1
else
    echo ">>"
    echo ">> Recording scheduled. All is OK!"
fi

rm /tmp/TVrecord.tmp

exit