游戏优化之音频压缩

ffmpeg -i ${f} -vn -ar 22050 -ac 1 -ab 128 -f mp3 ${dst}

#!/bin/bash
# http://ffmpeg.org/download.html to get binary distribution for ogg codex


usage()
{
	echo """
	Usage:
	Script to compress audio resource for distribution!

	-s <path to source dir>
	-d <path to dest dir>
	"""
}

#跳转到上一级目录
curpath=$(cd "$(dirname "$0")/"; pwd) 

res_path=""
des_path=""
while getopts ":s::d:" opt
do
	case $opt in 
		s ) res_path=$OPTARG;;
		d ) des_path=$OPTARG;;
		? ) echo "invalid param"
			exit 1;;
	esac
done

if [[ ${#res_path} -eq 0 ]]; then
	#statements
	usage
	exit 1
fi

if [[ ${#des_path} -eq 0 ]]; then
	des_path="mp3"
fi

if [[ ! -d ${des_path} ]];then
	mkdir ${des_path}
else
	echo "clean directory ${des_path}.."
	rm ${des_path}/*
	echo "clean done!~"
fi

CMD_MUSIC="$curpath/bin/ffmpeg -i"

echo "processing music..."
for f in `ls ${res_path}/*` 
do
	# dst="${des_path}/${f##[./0-9a-zA-Z_-]*/}"
	file="${f##[./0-9a-zA-Z_-]*/}"
	dst="${des_path}/${file%.*}.mp3"

	echo "convert ${f} to ${dst}..."
	# ${CMD_MUSIC} ${f} -vn -ar 44100 -ac 2 -ab 128000 -f mp3 ${dst}
	${CMD_MUSIC} ${f} -vn -ar 22050 -ac 1 -ab 128 -f mp3 ${dst}
	if [[ $? -eq 0 ]]; then
		#statements
		echo "done!~"
	else
		echo "${f} failed!~"
	fi
done
echo "music done!~"

audio.sh -s <音频源目录> -d <音频资源目录>