Re: [ecasound] problems with cs-set-position

On Mon, 8 Aug 2005, Pedro Antonio Fructuoso Merino wrote:

>> disk i/o subsystem. You can minimize by disabling the double-buffer
>> (-z:nodb), but you will increase the risk of xruns.
> Now i haven`t "jump" and the time response is minimal. I`m not sure of the
> meanig on "xrun", is it a especial type of error? is related with alsa?

xrun is ALSA slang for "either overrun or underrun". When a disk i/o xrun
happens, the disk i/o subsystem is too slow to either read or write data.
The -z:db mode ensures that momentary slowness (for example a break of few
secs to disk i/o throughput while some other process is causing lots of
disk activity) does not cause breaks to the ecasound audio
playback/recording.

> Now, with -z:nodb, i can listen better the error: when i make some
> successively cs-set-position the real position-time didn`t change but
> cs-get-position and ai-get-position gived me a change time position. Repeat,
> only happen with a little time jump, e.g., if it`s at the position 10 and
> made cs-set-position 100 work fine, the new cs position and ai position is
> 100 and the real position-time too, but it it`s at the position 107 and made
> cs-set-position 100 i could listen any change but a cs-get-position and
> ai-get-position give 100.

Hmm, that sounds strange. Are you using JACK? If yes, try
with "-G:jack,ecasound,notransport". Also try using ALSA instead of JACK.
If using ALSA, please try with OSS instead (or with ALSA's OSS-emulation)
=> "-o /dev/dsp".

--
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