RPGDX > Forums > Design and programming > SDL_mixer and libmodplug...how to make them get along?

Nodtveidt

I've looked all over for this and have no idea how it can be done. It is said that SDL_mixer should be able to use libmodplug instead of the ultracrap libmikmod but it's not written in the docs on how to do it, nor can I find anything on google that helps. Anyone know how this can be done? I sincerely hope it doesn't rely on Mix_HookMusic...
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DeveloperX · Posted: Fri Jul 17, 2009 8:09 pm Post subject:

From what I was able to gather, I think that you will need to implement a custom player using the functions that the libmodplug library provides.

libmodplug only outputs the audio data to a memory buffer, not an audio device, so using SDL_audio to implement a player for SDL_mixer using libmodplug.

I don't have time to delve farther into it than that at this time.
Any particular reason that libmikmod will not suffice?

What about using DUMB?
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Nodtveidt · Posted: Fri Jul 17, 2009 8:19 pm Post subject:

libmikmod tends to sound like crap, and DUMB has to be continuously called. I suppose I could always tweak the modules to work with libmikmod, but naturally, I'd rather just use libmodplug. :)

On another note...SDL_mixer has a great function called Mix_FadeInMusicPos. This is perfect for the project I'm on right now...it fades in a piece of music at a specified point of time (or, in the case of a MOD, at a pattern number). Only one problem...I don't see anything about getting the current position of a piece of music so it can be fade-resumed later. That lack of a function makes it useless for my project...I guess I would have to look into SDL_mixer's source code to find where it keeps this info.

EDIT: libmikmod has a variable called sngpos that appears to hold the pattern number currently playing. I'm not quite sure how to reference it though.
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If you play a Microsoft CD backwards you can hear demonic voices. The scary part is that if you play it forwards it installs Windows. - wallace

DeveloperX · Posted: Fri Jul 17, 2009 9:24 pm Post subject:

in music.c from SDL_mixer source I found this that might point you in the right direction..

Nodtveidt · Posted: Fri Jul 17, 2009 11:29 pm Post subject:

Unfortunately, I would have to recompile SDL_mixer to utilize libmikmod's sngpos. Oh well, fsckit...I can just use a different technique. Thanks for looking that all up though. As for libmodplug...it doesn't support the function, so I will skip trying to figure it out. Next stop: figuring out GRX. :(
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If you play a Microsoft CD backwards you can hear demonic voices. The scary part is that if you play it forwards it installs Windows. - wallace

DeveloperX · Posted: Sat Jul 18, 2009 1:01 am Post subject:

Nodtveidt · Posted: Sat Jul 18, 2009 1:15 am Post subject:

Because it's one of the only ones suited to regular C. Most graphics libraries are for C++. I suppose I could always just use opengl for 2D...haven't looked into it seriously just yet.
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If you play a Microsoft CD backwards you can hear demonic voices. The scary part is that if you play it forwards it installs Windows. - wallace

DeveloperX · Posted: Sat Jul 18, 2009 1:43 am Post subject:

Nodtveidt · Posted: Sat Jul 18, 2009 2:20 am Post subject:

My only requirement is a decent 2D graphics library that can be used with straight C. I had considered SVGAlib originally, but it requires root access to start up and it's rather flaky. So, I considered GRX, since it also has a DOS version...just in case I wanted this thing ported to DJGPP (what are the odds, really...). SDL doesn't seem to be glued to C++, and of course, opengl is always an option. I could just use X directly but I'd rather not. :) GRX seemed a viable option since it wraps SDL, and I'm already using the SDL sound libraries. But maybe it would be better to just use SDL directly. I am no fan of Allegro and its mess under the hood...

My development system is an Acer Aspire 3680, which is based on a Celeron 1.8 with 512MB RAM. The system is FreeBSD 7.2 STABLE with the latest xorg port, running KDE 3.5 (since KDE4 is unstable, bloated, and slow as a constipated shit).
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If you play a Microsoft CD backwards you can hear demonic voices. The scary part is that if you play it forwards it installs Windows. - wallace

DeveloperX · Posted: Sat Jul 18, 2009 3:56 am Post subject:

RedSlash · Mage Joined: 12 May 2005 Posts: 331

SDL_Mixer is a high level sound library with format support built-in. If you need to work with direct buffers, you're looking at using SDL_Audio directly.

Nodtveidt · Posted: Fri Jul 24, 2009 8:07 pm Post subject:

RedSlash, to that, I am very well aware. That wasn't the question posed here. On the SDL_Mixer homepage itself, it states that it can use libmodplug as well as libmikmod. However, the documentation is mum as to the process.

Rich, I'll let you know what's up.
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If you play a Microsoft CD backwards you can hear demonic voices. The scary part is that if you play it forwards it installs Windows. - wallace

DeveloperX · Posted: Sat Jul 25, 2009 1:00 am Post subject: