[fluid-dev] Some Questions About FluidSynth MIDI Player

[Zegelin Peter]

Hi,

	I have been playing with fluidSynth under MacOSX for a few days now  
and am seriously thinking that it may be suitable for a new commercial  
product of mine. However I do have a couple of questions, mainly to do  
with the midi player part of fluidSynth.

1. I really need to be able to adjust the playback speed of the file.  
I notice that there is a fluid_player_set_midi_tempo function but it  
isn't well documented. Is this the correct place to adjust the  
playback rate?

2. Is it possible to stop the player in the middle of a song, move the  
current playback position either forward or backwards and then start  
again? Are all the controllers set to their correct values for that  
position before playback begins?

3. Is it possible to get the player to issue events to an external  
device rather than through the internal synth?

4. Does looping work?

My last question has to do with the synth itself. From reading some of  
the mailing list it seems that reverb, chorus and gain don't work as  
well as they should and I have heard the occasional crackle myself.  
Switching chorus and reverb off helped a lot but it is still  
noticeable on some files. I am a complete novice here but I am  
wondering if it would be possible to modify fluidsynth so that the  
internal mixer was bypassed and the unmixed sound data was sent to the  
fluid_core_audio_callback. This data could then be sent to OSX's built  
in CoreAudio  mixers and AudioUnits to do the processing, thus  
avoiding the problem. I am not even sure if this makes sense but I  
thought I'd ask!

Anyway - many thanks for a very nice piece of software.

Peter