Create Mac ICNS file for Xcode project

在devdaily.com看到PNG to ICNS的教學，

FastIcns是一個方便的application, 可輕鬆把png 轉換成icns （mac的icon格式）


在Xcode裡, 把icns file 加到project中Resources／Icons ＆ Default中
target 上 right click > GetInfo > Properties tab > Icon File 欄中輸入file的名稱，完成！=]

FastIcns project page

Converting audio file format on Mac by "afConvert"

"afConvert" is a command which could be directly used in the Terminal (I am using Mac OS X 10.6.4).

I used to convert audio file of format .m4a to .caf, which is a file format for iPhone and is actually a wrapper for a number of data formats like .mp3, LEI, acc, etc...

To make my sound file playable by my OpenAL class in iPhone SDK, I tried to change it to LEI16
"afConvert -f caff -d LEI16@44100 inputname outputname"

In order to make the files smaller, I tried using LEI8 and acc but the sounds played are weird.
I am still working on it.

Here is a shellScript for batch conversion, name the script as converttocaf.sh and all the file in that directory will be converted to the .caf format:

for f in *; do
if  [ "$f" != "converttocaf.sh" ]  then
    /usr/bin/afconvert -f caff -d LEI16@44100 $f
    echo "$f converted"
fi
done

Mac Shell Script

In our project, the screen delay whenever any sound is played.
The reason is that it used AVAudioPlayer for playing all sounds and musics.
However I found that AVAudioPlayer is more for streaming but not caching, we need to shift to OpenAL for playing sounds.

After writing a class for OpenAL, I used much time to find out why it doesn't work.
The final answer is: it works, but it is not compatible with the original audio format ".m4a".
Then I need to find a way to convert them to ".caf" format which works well with OpenAL in iPhone.

Well, the next step is to find a way to do batch convertion with afConvert.
Finally comes to the topic: using shellScript on Mac.

(the above topics: OpenAL, afConvert to caf, afConvert batch convertion, will be discussed later)

Here is a gd answer on StackOverFlow (as always).

And it is a script for deleting all files with extension .caf in a directory: "find . -type f -name "*.caf" -exec rm -f {} \;"

Mac batch file rename app

發現了一個好用的檔案rename application, for Mac 的
NameChanger