compresspng

#! /bin/sh
#将png压缩成pkm或者pvr，pvr.ccz格式

if [[ $1 == "" || $2 == "" ]]; then
	echo "help:\n\t"$(basename $0)" <source folder> <target filetype>" 
	exit
fi

if [[ $2 != "pkm" && $2 != "pvr" && $2 != "pvr.ccz" ]]; then
	echo "Target filetype is error. Must be one of : pkm/pvr/pvr.ccz"
	exit
fi


SHELL_FOLDER=$(cd "$(dirname "$0")";pwd)

function convertDir(){
	srcdir=$1
	dstdir=${srcdir}"_"$2

	srcfiletype="png"
	dstfiletype=$2

	if [[ ! -d $dstdir ]]; then
		mkdir -m 777 -p $dstdir
	fi

	echo "sourcedir="${srcdir}
	echo "destdir="${dstdir}

	echo ================
	#方案4：迭代遍历当前目录下的所有png文件,将其转换成pvr格式，并替换原始文件
	filelist=`find $srcdir -name \*.$srcfiletype`
	for in in $filelist; do
		if [[ $in == *$filetype ]]; then
			echo ================
			echo "in  file="$in

			if [[ $dstfiletype == "pkm" ]]; then
				${SHELL_FOLDER}/etc/etcpack $in $dstdir -c etc1 -ext PNG -as
			else
				filename=$(basename $in .png)
				echo "filename"
				outpath=${dstdir}/${filename}.${dstfiletype}

				if [[ $dstfiletype == "pvr" ]]; then
					TexturePacker --format x2d --sheet $outpath  $in  --opt PVRTC4 --dither-fs-alpha  --premultiply-alpha --disable-rotation --size-constraints NPOT --border-padding 0 --shape-padding 0
				elif [[ $dstfiletype == "pvr.ccz" ]]; then
					TexturePacker --format x2d --sheet $outpath  $in  --opt PVRTC4  --content-protection b23d9e45bd414cac37ea0e8a9dd6cf9d  --dither-fs-alpha  --premultiply-alpha --disable-rotation --size-constraints NPOT --border-padding 0 --shape-padding 0
				fi
			fi
		fi
	done
}

convertPng(){
	srcfile=$1
	echo srcfile=$srcfile

	if [[ $2 == "pkm" ]]; then
		dstdir=$(dirname "$srcfile")
		echo dstdir=$dstdir
		etcpack $srcfile $dstdir -c etc1 -ext PNG -as
	elif [[ $2 == "pvr" ]]; then
		dstfile=${srcfile/'png'/${2}}
		echo dstfile=$dstfile
		TexturePacker --format x2d --sheet $dstfile  $srcfile  --opt PVRTC4 --dither-fs-alpha  --premultiply-alpha --disable-rotation --size-constraints NPOT --border-padding 0 --shape-padding 0
	elif [[ $2 == "pvr.ccz" ]]; then
		dstfile=${srcfile/'png'/${2}}
		echo dstfile=$dstfile
		TexturePacker --format x2d --sheet $dstfile  $srcfile  --opt PVRTC4  --content-protection b23d9e45bd414cac37ea0e8a9dd6cf9d  --dither-fs-alpha  --premultiply-alpha --disable-rotation --size-constraints NPOT --border-padding 0 --shape-padding 0
	fi
}

if [[ -d $1 ]]; then
	convertDir $1 $2
elif [[ -f $1 ]]; then
	convertPng $1 $2
fi