decrypting mp3 files @ runtime [problem]

alfinator · 29th August 2006, 15:26

How can i use the sdk to code a plugin that decrypts mp3 files _before_ they are played and encrypts them again after they're skipped / stopped?
Sorry dudes for this stupid question but i'm not into this plugin coding, i just coded a file encryption application and i want to encrypt all my mp3's and with _this_ winamp plugin they will be decrypted at runtime.

Is that possible?

cheers, alf

gonemad · 30th August 2006, 16:44

interesting idea.. why do you need to encrypt your mp3 files tho

alfinator · 3rd September 2006, 11:32

why shouldnt i? :]
can ne1 help me?
tnx in advance

Benski · 3rd September 2006, 16:48

You could write an input plugin which "chains" in_mp3. That is, your plugin takes over playback of MP3 files, but all it does is decrypt the file to a temporary file, pass control over to in_mp3 (and deletes the temporary file when playback stops). DrO uses a very similiar technique for his in_zip plugin.

However, if you want "on-the-fly" decryption, you'll pretty much have to write your own MP3 decoding plugin

29th August 2006, 15:26	#1
alfinator Junior Member Join Date: Aug 2006 Posts: 2	decrypting mp3 files @ runtime [problem] How can i use the sdk to code a plugin that decrypts mp3 files _before_ they are played and encrypts them again after they're skipped / stopped? Sorry dudes for this stupid question but i'm not into this plugin coding, i just coded a file encryption application and i want to encrypt all my mp3's and with _this_ winamp plugin they will be decrypted at runtime. Is that possible? cheers, alf

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30th August 2006, 16:44	#2
gonemad Member Join Date: May 2006 Posts: 52	interesting idea.. why do you need to encrypt your mp3 files tho

3rd September 2006, 11:32	#3
alfinator Junior Member Join Date: Aug 2006 Posts: 2	why shouldnt i? :] can ne1 help me? tnx in advance

3rd September 2006, 16:48	#4
Benski Ben Allison Lead Developer Winamp Dev Team Join Date: Jan 2005 Location: Ashburn, VA Posts: 1,018	You could write an input plugin which "chains" in_mp3. That is, your plugin takes over playback of MP3 files, but all it does is decrypt the file to a temporary file, pass control over to in_mp3 (and deletes the temporary file when playback stops). DrO uses a very similiar technique for his in_zip plugin. However, if you want "on-the-fly" decryption, you'll pretty much have to write your own MP3 decoding plugin