Re: [fluid-dev] FluidSynth backend for SDL_mixer

[David Henningsson]

On 2010-10-17 18:41, James Le Cuirot wrote:
> Just want to give an update and new patch for this SDL_mixer backend.
> The tempo issue has now been ironed out. Using the sample timer instead
> of the system timer (which I should have done in the first place)
> allows me to call fluid_sequencer_set_time_scale from within a callback.
>
> Matt Giuca said he'd look into making FluidSynth read MIDI from a
> buffer, rendering half my code redundant (yay!) but I haven't heard
> back from him yet.
>
> I now use SDL's own audio conversion functions, which should be fine,
> but there's still something very wrong with the sample rate and it
> looks like FluidSynth is at least part of the problem.
>
> When I made the adjustment to 1.1.1 to allow sample rates as low as
> 11025Hz, Rise of the Triad sounded correct. However, I have since tried
> making the same adjustment to 1.1.2 and also tried 1.1.3 where David
> has committed the change upstream (to 8000Hz) and it's back to playing
> at half speed/pitch again.

I noticed you found the bug, thanks! Fixed in current trunk.

> I tested against the patch I originally sent
> here in case one my own changes were to blame. I also went back to
> 1.1.1 just to double check.
>
> If you try this latest patch against 1.1.1, you'll also notice that
> everything is a piano! This is probably some other FluidSynth bug
> that's already been fixed. I've seen this happen intermittently with
> the command line player.

This was fixed/changed in 1.1.2, yes.

// David