[SDL] Appending resources to .exe

[Steaphan Greene]

On Thu, Apr 05, 2007 at 10:27:05AM +0300, Martin Storsjö wrote:
> > You're right. I do essentially the same thing, but with on-the-fly 
> > decompression using bzip2. But one thing that really bothers me is 
> > having to extract MP3 files to the file system with the .mp3 
> > extension to be able to have SDL_Mixer read it.
> 
> Ah, but if you do decompression you probably get the file start/end 
> correctly in your SDL_RWops, so that seeking works as it should. In 
> that case it's probably only a problem with the MP3 file loading in 
> SDL_Mixer, as you suspected.

If I remember correctly, this is because the MP3 loading code, and many 
others, do a SEEK_SET or SEEK_END style seek, meaning relative to the 
overall beginning or end of your stream, not relative to where you tell 
it to start.  This is due to the headers and organization of these 
filetypes.  It is totally possible to fix this with a custom replacement 
for the SDL_RWOps structure created by the RWOps open function with 
custom functions which artificially restrict this seeking and even 
reading/writing manually based on the ranges you give it.  I believe 
I've even done this, but can't seem to locate my code for it at the 
moment.

-- 
Steaphan Greene <sgreene at cs.binghamton.edu>
Lecturer, Computer Science, Binghamton University
GPG public key: http://www.cs.binghamton.edu/~sgreene/gpg.key.txt
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