#!/bin/sh
#
# Description - convert RAW photos to JPEG with Exif
#
# Developed by Lubomir Host 'rajo' <rajo AT platon.sk>
# Copyright (c) 2009-2009 Platon Group, http://platon.sk/
# Licensed under terms of GNU General Public License.
# All rights reserved.
#
# Changelog:
# 2009-08-05 - created
#

# $Platon: scripts/shell/photo-managment/foto-copy,v 1.3 2009-01-12 23:17:07 rajo Exp $

# howto rename your files: img_1234.jpg --> 2006-08-13_230001_img_1234.jpg (image taken on  2006-08-13 23:00:01)
JHEAD_OPTS="-n%Y-%m-%d_%H%M%S_%f"

# paths setup:
JHEAD="jhead"
DCRAW="dcraw"
EXIV2="exiv2"
PPMTOJPEG="ppmtojpeg"

# lossless rotation of JPEG files
do_rotation()
{ # {{{
	rrfile="$1"
	degres="$2"

	echo -e "\t--> rotating $degres $rrfile"
	if jpegtran -rotate $degres -copy all -outfile ${rrfile}_tmp ${rrfile};
	then
		echo -e "\t\tRotated"
		mv ${rrfile}_tmp ${rrfile}
		$EXIV2 -M'del Exif.Image.Orientation' $rrfile
	else
		echo -e "\t\tFailed"
		rm ${rrfile}_tmp
	fi
} # }}}

# distinguish angle of rotation
rotate_jpeg()
{ # {{{
	rfile="$1"

	orient=`$EXIV2 -P kyv $rfile | awk '/Exif.Image.Orientation/ { print $3; }'`
	case "$orient" in
		1)	echo "$rfile: Orientation: $orient top left";
			;;
		6)	echo "$rfile: Orientation: $orient right top";
			do_rotation $rfile 90
			;;
		8)	echo "$rfile: Orientation: $orient left bottom";
			do_rotation $rfile 270
			;;
		*)	echo "$rfile: Orientation: $orient UNKNOWN";
			;;
	esac
} # }}}

for i in $*; do # {{{
	[ "x$i" = "x*.crw" ] && continue
	[ "x$i" = "x*.cr2" ] && continue
	file=${i%.crw}
	file=${file%.cr2}
	if [ ! -f "$file.jpg" ]; then
		echo --- $i;
		$DCRAW -w $i # use white ballance set by camera
		$PPMTOJPEG $file.ppm > $file.jpg && rm -f  $file.ppm ;
	fi

	# set EXIF information:
	rm -f $file.exv $file-thumb.jpg
	$EXIV2 ex $i
	[ -f $file.thm ] && ln -s $file.thm $file-thumb.jpg

	# doesn't work correctly
	#$EXIV2 -it $file.thm $file.jpg
	# use Exif info from *.thm file otherwise from *.crw file
	if [ -f "$file.thm" ]; then
		$EXIV2 -P kyv $file.thm | awk 'NF > 2 { print; }' | sed 's/^/set /g;' > $file.cmd
	else
		$EXIV2 -P kyv $i | awk 'NF > 2 { print; }' | sed 's/^/set /g;' > $file.cmd
	fi
	$EXIV2 -m $file.cmd $file.jpg

	# fix: Canon EOS 300D Digital Rebel stores wrong Exif.Image.Orientation info *.thm files
	# Exif.Image.Orientation needs to be read from RAW image
	#$EXIV2 -P kyv $file.crw | awk '/Exif.Image.Orientation/ { print; }' | sed 's/^/set /g;' > $file.cmd
	#$EXIV2 -m $file.cmd $file.jpg

	# rotate image if needed - we don't need rotate this JPEG file, because
	# orientation will be fixed if Exif.Image.Orientation Exif tag is removed.
	#rotate_jpeg $file.jpg

	# remove incorrect Exif headers (taken from thumbnail or after rotation)
	$EXIV2 \
		-M'del Exif.Image.XResolution' \
		-M'del Exif.Image.YResolution' \
		-M'del Exif.Image.Orientation' \
		$file.jpg

	# rename
	$JHEAD $JHEAD_OPTS $file.jpg

	# cleanup
	rm -f $file-thumb.jpg
	rm -f $file.exv
	rm -f $file.cmd

done # }}}

# vim: fdm=marker fdl=0 fdc=3