#!/bin/bash
#
# Bashfuse v0.2
#
# Copyright (C) 2008 - Frederic Mantegazza
#
# This script calls tufuse.exe through wine to fuse the input images.
# The number of images per group is asked via Xdialog. Then each group
# is fused, procssing them in the order that they were passed to the
# script.
#
# For example, if you bracketed -2, 0 and +2, then the number of images
# per group is 3, and the images are img1.tif img2.tif img3.tif
# img4.tif img5.tif img6.tif etc... The first group to be processed contains
# img1.tif img2.tif and img3.tif, second group process img3.tif img4.tif
# and img5.tif, and so on for all your images.
#
# For each group, the output name is computed using the first image name
# of the group. The extension (.tif in our example) is removed, and the suffix
# _tufuse.tif is added. If it already exists, an increment is used,
# e.g. img1_tufuse_1.tif.
#
# This script can be called from gqview. To set it up, go to
# Preferences > Editors, in an empty "Menu name" field enter:
# tufuse
# and in the "Command Line" field enter:
# %v/path/to/tufuse.sh %f
# e.g. %v/home/user/tufuse.sh %f
#
# The %v is optional but recommended as it will show you what's happening
# while processing. Note: there is no space between %v and the path.
#
# This script depends on Xdialog to let you choose number of photos per group:
# http://xdialog.free.fr/
#
# on WINE to run tufuse.exe:
# http://www.winehq.org/
#
# You need the Windows version of DCRaw to be able to process non-tiff
# files:
# http://www.lebsanft.org/blog/?tag=dcraw
#
# as well as the cygwin.dll files, also available on the above website, to be
# able to run dcraw.exe:
# http://www.lebsanft.org/files/cygwin.tar.gz
#
# IMPORTANT: keep tufuse.sh (this script), tufuse.exe, dcraw.exe and the
# cygwin files in the same directory!
# e.g. /home/user/
#'

export WINEDEBUG="warn-all,err-all,fixme-all"

#Set the path to your tufuse.exe file
TUFUSE_PROG="wine /home/drslony/tufuse.exe"

# Set your tufuse.exe parameters. Check the tufuse website for the full list
# and explanation.
# Current settings output 16bit tiff files using deflate compression
TUFUSE_PARAMS=(-a 16 --compression DEFLATE)

# Functions
#
processGroup()
{
    echo Processing "$@"
    base="${1%.*}"
    output="$base"_tufuse.tif
    index2=1
    if [ -e "$output" ]; then
        output="$base"_tufuse_$index2.tif
        while [ -e "$output" ]; do
            index2=$((index2 + 1))
            output="$base"_tufuse_$index2.tif
        done
    fi

    $TUFUSE_PROG -o "$output" ${TUFUSE_PARAMS[@]} "$@"
}

process()
{
    # tufuse.exe expects source images in the current dir
    dir=`dirname "$1"`

    #if input files (first input file) are not tiff then copy dcraw files to photo dir and delete them once tufusing is complete
    if [[ $1 != *.tif ]]; then
       cp dcraw.exe cygwin1.dll cyglcms-1.dll cygjpeg-62.dll "$dir"\/
       trap "rm \"$dir/dcraw.exe\" \"$dir/cygwin1.dll\" \"$dir/cyglcms-1.dll\" \"$dir/cygjpeg-62.dll\"" 0
    fi

    cd "$dir"

    # Initial params
    nbGroups=$(($# / nbImgPerGrp))
    echo nbGroups=$nbGroups
    nbImages=$((nbGroups * nbImgPerGrp))
    echo nbImages=$nbImages
    if [ $# -ne $nbImages ]; then
        echo "Error: the number of images ($#) is not a multiple of the number of images per group ($nbImgPerGrp)"
        exit 1
    fi

    # Create groups
    index=0
    group=()
    for file in "$@"; do
        group=("${group[@]}" "$(basename "$file")")
        if (( "${#group[@]}" == nbImgPerGrp )); then
            processGroup "${group[@]}"; group=();
        fi; done;
}

# Main script
#
# Ask for settings
nbImgPerGrp=`Xdialog --title "# per bracket" --stdout --spinbox "How many images per group?" 0 0 2 012 3 ""`
ret=$?
case $ret in
    0)
        process "$@";;
    1)
        echo "Canceled";;
    255)
        echo "Aborted";;
esac