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[fluid-dev] Re: fluidsynth on mac OS X


From: Ebrahim Mayat
Subject: [fluid-dev] Re: fluidsynth on mac OS X
Date: Tue, 16 Mar 2004 15:37:37 +0200

Hi Josh

Playing back MIDI files is very easy on a Mac: with Apple's QuickTime application using the the on-board QuickTimeMusic Synthesizer. I could also use eMagic Logic for this and if I need to edit the MIDI File.

The other reason I compiled fluidsynth was to be able to play back
Soundfont files using MIDI keyboard triggering. How does one do this?

I imagine that MidiShare needs to route your MIDI keyboard to
FluidSynth. I'm not sure how this is done though since I have never used MidiShare. Perhaps there is some documentation somewhere that could help
you.

The reason for this is that even though there is no problem for fluidsynth to become a client in Jack, there is no MIDI driver for fluidsynth (previously known as msSynthDriver) in the present version of MidiShare (1.87). So, fluidsynth cannot act as a MIDI source. (MidiShare did have this capability for iiwusynth.)

According to my recent correspondence with St├ęphane Letz, he and his colleagues are actively developing this driver under CVS.

Ideally, I would like to use fluidsynth in a live or quasi-live setting using a laptop.

Anyway, I'd like to compile SWAMI also. So this would be my immediate
next project.


Provided you have Fink and GTK 1.2 this shouldn't be too hard.

Yes, I do.

Josh, thanks again for the help and encouragement. If you would like
the binary and the dynamic libs, I'd be happy to put them on my .Mac
site for downloading.


Ideally it would be nice to set things up so FluidSynth can be easily
packaged for Fink. It seems like Jack is probably the best solution
right now for audio output, but that would mean that Jack should also be part of Fink. As I mentioned before, I do have access to an OS X machine
on the SourceForge compile farm. I'll look into Fink packages and the
like, although I'm sure I could use some assistance in this area.

I could send you my configure script and Makefile. I'd also be glad to help you out in other ways; just let me know. In the meantime, you could checkout

<http://fink.sourceforge.net/doc/porting/index.php>

I am also looking into how I could use fluidsynth as a pure sound source as opposed to a source of MIDI data. Perhaps, you could save me some time and give me a few pointers on this.

This is what I get:
ebrahimm% fluidsynth /Users/ebrahimm/Desktop/sf2demos/VintageDreamsWaves-v2.sf2
fluidsynth: warning: Ignoring sample SineWave: can't use ROM samples
fluidsynth: debug: Using 'coreaudio' audio driver

JAS: DeviceGetPropertyInfo unkown request:'bbvs'
fluidsynth: debug: sampleRate 44100
fluidsynth: debug: mFormatFlags 0000002B
fluidsynth: debug: mBytesPerPacket 4
fluidsynth: debug: mFramesPerPacket 1
fluidsynth: debug: mChannelsPerFrame 1
fluidsynth: debug: mBytesPerFrame 4
fluidsynth: debug: mBitsPerChannel 32
fluidsynth: debug: Using 'midishare' midi driver

*** malloc_zone_calloc[1369]: arguments too large: 4,2423534936
*** malloc[1369]: Deallocation of a pointer not malloced: 0x66f000; This could be a double free(), or free() called with the middle of an allocated block; Try setting environment variable MallocHelp to see tools to help debug *** malloc[1369]: Deallocation of a pointer not malloced: 0x73c000; This could be a double free(), or free() called with the middle of an allocated block; Try setting environment variable MallocHelp to see tools to help debug *** malloc[1369]: Deallocation of a pointer not malloced: 0x74d000; This could be a double free(), or free() called with the middle of an allocated block; Try setting environment variable MallocHelp to see tools to help debug *** malloc[1369]: Deallocation of a pointer not malloced: 0x7e9000; This could be a double free(), or free() called with the middle of an allocated block; Try setting environment variable MallocHelp to see tools to help debug
fluidsynth version 1.0.3
Copyright (C) 2000-2002 Peter Hanappe and others.
FLUID Synth comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; see the COPYING file for details.
SoundFont(R) is a registered trademark of E-mu Systems, Inc.

Type 'help' to get information on the shell commands.

Segmentation fault

Alternatively, if I try

% fluidsynth
(snip)
> load /path/to/VintageDreamsWaves-v2.sf2
fluidsynth: warning: Ignoring sample SineWave: can't use ROM samples
loaded SoundFont has ID 0
>

This seems to work. Now, what commands can I use to produce some sound?

All the best.
Ebrahim





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