[SDL] Trouble using sdl_mixer and OGG files

[Ken Rogoway]

-----Original Message-----
From: sdl-bounces at lists.libsdl.org [mailto:sdl-bounces at lists.libsdl.org] On
Behalf Of Sam Lantinga
Sent: Friday, June 08, 2007 12:01 AM
To: A list for developers using the SDL library. (includes SDL-announce)
Subject: Re: [SDL] Trouble using sdl_mixer and OGG files


> >I have attached a short OGG file that demonstrates this crash using
> >SDL-1.2.11 and SDL_Mixer-1.2.7.  Build the PLAYMUS sample app that is
> included with SDL_Mixer
> >and you will see that it crashes with the above error when trying to 
> >play
> this OGG file.

> As I thought, switching back to SDL_Mixer-1.2.5 works fine.  There 
> appears to be a bug in SDL_Mixer-1.2.7 (or else I am doing something
incorrectly).

It works fine for me on Mac OS X.  I'm guessing it's a C runtime
incompatibility on Windows.  If you build both SDL_mixer and playmus from
source, do you see the problem?  If so, can you run it in the debugger and
find out what's going on?

See ya!
	-Sam Lantinga, Lead Software Engineer, Blizzard Entertainment
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Yes, it happens if I build it from source under Windows using Visual Stuido
2003 or VS2005. 

This is the code it crashes on:

		if ( vorbis.ov_open(fp, &music->vf, NULL, 0) < 0 ) {

The vorbis structure appears to be filled out with pointers to the various
ogg dll functions.  The file point is a valid file pointer.  In the actual
callback it appears to be crashing trying to do the fseek to the start of
the file.  I will try changing the compile type from Multithreaded to single
threaded and see if it still crashes.

Ken Rogoway
Homebrew Software
http://www.homebrewsoftware.com/

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