Re: [ecasound] problems with growing files

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Subject: Re: [ecasound] problems with growing files
From: Kai Vehmanen (kaiv@wakkanet.fi)
Date: Mon Jan 17 2000 - 07:10:01 EET

On Fri, 14 Jan 2000, Jeremy Hall wrote:

> I have an encoding process encoding mp3 data into a file, and a trailing
> ecasound process reading it and playing it so I can move about in the
[...]
> Ecasound does not seem to recognize the file is growing. IT seems to
> stop, then you have to cs-connect and start in order to resume playing.

Hmm, input format used by ecasound is important here. If
input-device/file is finished, processing is stopped (engine status =
"finished"). For wav/raw/cdr/stdin/stdout, standard libc calls are
used (ferror() and feof()). Formats handled by libaudiofile (aif/snd)
have their own mechanism... I tested streaming soundcard input through
a named FIFO from one ecasound process to another and it seemed to
work ok. I used raw format.

Btw; Ecasound doesn't grow input-file length during processing (shown by
     "fstatus"), but this shouldn't be a problem. 

-- 
Kai Vehmanen <kaiv@wakkanet.fi> -------- CS, University of Turku, Finland
 . http://www.wakkanet.fi/ecasound/ - linux multitrack audio processing
 . http://www.wakkanet.fi/sculpscape/ - ambient-idm-rock-... mp3/ra/wav

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