#!/bin/sh
##
## Nautilus
## SCRIPT: 0B_1movieFile_show_PROPERTIES_mplayer-identify.sh
##
## PURPOSE: Shows the properties of a movie file ('.mpg', '.flv',
##          '.mov', '.wmv', '.mp4', '.mkv', '.asf', '.avi', '3gp',whatever).
##
## METHOD:  There is no prompt for a parameter.
##
##          Uses 'mplayer -frames 0 -identify' to get the properties
##          of the selected movie file.
##
##          Puts the text output in a file in the '/tmp' directory.
##
##          Shows the text output in a text viewer of the user's choice
##          --- after attaching stderr msgs to stdout.
##
## HOW TO USE: In Nautilus, select a movie file.
##             Then right-click and choose this script to run (name above).
##
##########################################################################
## Started: 2011apr20
## Changed: 2011may02 Add $USER to 2 temp filenames.
## Changed: 2012may14 Changed script name in comments above and touched up
##                    the comments. Changed some indenting below.
## Changed: 2013apr10 Added check for the mplayer executable. 
###########################################################################

## FOR TESTING: (show statements as they execute)
# set -x

#########################################################
## Check if the mplayer executable exists.
#########################################################

EXE_FULLNAME="/usr/bin/mplayer"

if test ! -f "$EXE_FULLNAME"
then
   zenity  --info --title "Executable NOT FOUND." \
   --no-wrap \
   --text  "\
The mplayer executable
   $EXE_FULLNAME
was not found. Exiting.

If the executable is in another location,
you can edit this script to change the filename.
OR, install the 'mplayer' package."
   exit
fi


#########################################
## Get the filename of the selected file.
#########################################

  FILENAME="$1"
# FILENAMES="$@"
# FILENAMES="$NAUTILUS_SCRIPT_SELECTED_FILE_PATHS"


#########################################################################
## Check that the selected file looks like a 'supported' movie file,
## via its suffix.
##
## MIGHT BE BETTER TO COMMENT OUT THIS CHECK, and just let the
## 'properties' output be generated and viewed, even if the
## output is only error messages.
##
##     (Assumes just one dot [.] in the filename, at the extension.)
#########################################################################

#  FILEEXT=`echo "$FILENAME" | cut -d\. -f2`
 
#  if test "$FILEEXT" != "mp4" -a "$FILEEXT" != "mkv"  -a \
#          "$FILEEXT" != "flv" -a \
#          "$FILEEXT" != "wmv" -a "$FILEEXT" != "asf"  -a \
#          "$FILEEXT" != "mpg" -a "$FILEEXT" != "mpeg" -a \
#          "$FILEEXT" != "ogg" -a "$FILEEXT" != "ogv"  -a \
#          "$FILEEXT" != "avi" -a "$FILEEXT" != "mov"  -a \
#          "$FILEEXT" != "3gp"
#  then
#     exit
#  fi


##################################
## Prepare the output filename(s).
##################################

FILEOUT="/tmp/${USER}_movie_properties_mplayer.txt"

if test -f "$FILEOUT"
then
   rm -f "$FILEOUT"
fi

FILEOUT2="/tmp/${USER}_movie_properties_mplayer_2.txt"

if test -f "$FILEOUT2"
then
   rm -f "$FILEOUT2"
fi


########################################################################
## Use 'mplayer' to put the properties of the movie file in a text file,
## along with header and trailer info.
########################################################################

echo "\
'mplayer -frames 0 -identify' output:
####################################
" > "$FILEOUT"

## FOR TESTING:
# xterm -hold -e \

# mplayer -frames 0 -identify "$FILENAME" 2> "$FILEOUT2"  >>  "$FILEOUT"

$EXE_FULLNAME -frames 0 -identify "$FILENAME" 2> "$FILEOUT2"  >>  "$FILEOUT"


if test ! -z "$FILEOUT2"
then
    cat "$FILEOUT2" >> "$FILEOUT"
fi

echo "
####
NOTE: 'mplayer -frames 0 -identify' will give error messages on some files,
       whereas 'ffmpeg -i' may not." >> "$FILEOUT"


###########################
## Show the output file.
###########################

. $HOME/.freedomenv/feNautilusScripts/set_DIR_NautilusScripts.shi
. $DIR_NautilusScripts/.set_VIEWERvars.shi

$TXTVIEWER "$FILEOUT" &