Assertion #<procedure:negative?> failed on 0.0 about rsound HOT 11 OPEN

Indeed. I think the next step would be to try running the files required by rsound/main, one at a time. You could also begin at the other end, by requiring portaudio/portaudio; if that fails, there would be no need to look at rsound.

from rsound.

thanks fort

Indeed. I think the next step would be to try running the files required by rsound/main, one at a time. You could also begin at the other end, by requiring portaudio/portaudio; if that fails, there would be no need to look at rsound.

Thanks for the tips - i will look into that.

from rsound.

Interesting - requiring utils.rkt is enough to trigger this.

Welcome to Racket v8.3.0.8 [cs].
> (require "rsound/util.rkt")
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_
lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
; Assertion #<procedure:negative?> failed on 0.0 [,bt for context]
> 

Will have to investigate this file further.

from rsound.

ah, you won't even believe this:

> (require (only-in math/base power-of-two?))
Assertion #<procedure:negative?> failed on 0.0

from rsound.

from rsound.

FWIW - is it a Linux only problem? At least I can't see the problem on macOS. /Jens Axel

Yeah - it's interesting and confusing at the same time. I am not being able to reproduce it reliably when just doing the require line, but it sure fails reliably when required through rsound, so unfortunately this seems to be a tricky one to repro. I will add more information as I find out about it.

from rsound.

This is a hell of a bug...

If I start drracket and run (excerpt from util.rkt.

(require ;"rsound.rkt"
         (only-in math/base power-of-two?)
         )

It works! So I uncomment the first line.

(require "rsound.rkt"
         (only-in math/base power-of-two?)
         )

to get: Assertion #<procedure:negative?> failed on 0.0

From here on out. Simply requiring (only-in math/base... is enough to cause the assertion.

Assertion #<procedure:negative?> failed on 0.0
  context...:
   body of "/home/pmatos/installs/racket-8.3/share/pkgs/math-lib/math/private/flonum/flonum-constants.rkt"

However, requiring only rsound.rkt is not enough to cause the issue.

from rsound.

Well, rsound (or, more specifically, portaudio) does use ffi/unsafe, so there's a definite window open for this to be my fault. Ugh. I wish I could reproduce it! Also, it appears to me that for Ken Shan, at least, rsound does not show this bug. Also, I can't reproduce it on my vps. Oog.

from rsound.

from rsound.

from rsound.

Well, if I can see the bug, I’m certainly much more likely to try to narrow it down than if I don’t. I agree that if it depends on having alsa set up, it could be quite painful. Best, John

Sounds like finding a way to reproduce it might take as long and myself digging into the code and trying to fix it tbh. I tried in all pcs I have around and it only fails on my work PC. :(

This means that it is probably related to some alsa setup. At least I have something to go on... I will try to understand what's happening on the interface with the FFI and the warning messages I get on the console from ALSA lib.

Will keep you up-to-date.

from rsound.