[MPlayer-dev-eng] alsa: undef'ing SET_CHUNKSIZE garbles audio

[Zsolt Barat]

Reimar Döffinger wrote:

> Hi,
>
>>> I've narrowed it down to the line in ao_alsa.c where SET_CHUNKSIZE 
>>> was previously #defined, and now #undef'ed.  Chaning this line back to
>>> #define    SET_CHUNKSIZE
>>> clears up my audio.
>>
>
> That was changed back, but don't ask me about details...
>
>
chunksize sets the audio buffersize explicitly 
(buffersize=fragmentsize*chuncksize). i thought it isn`t needed cause 
without it, the best "default" buffersize  for each driver is set. it 
seems that it is needed under some circumstances so its back again.
btw it affects the realtime behaviour of alsa. if the chunksize 
(buffersize) is low it is more responsive. the alsa-defaults seems to be 
good for audio-only-apps but not for "movie"-players like mplayer. it 
explains also why fuzzling around with system settings or moving the 
mouse could produce some crickles. the audio-buffer was simply empty ;).

greetings

zsolt