[pulseaudio-discuss] regression in pacat

[Mads Kiilerich]

On 02/17/2010 09:45 AM, Colin Guthrie wrote:
> 'Twas brillig, and Lennart Poettering at 17/02/10 02:36 did gyre and gimble:
>> On Thu, 11.02.10 23:34, Colin Guthrie (gmane at colin.guthr.ie) wrote:
>>
>>>
>>> 'Twas brillig, and Colin Guthrie at 11/02/10 22:52 did gyre and gimble:
>>>> 'Twas brillig, and pl bossart at 11/02/10 21:41 did gyre and gimble:
>>>>> Hi Lennart, hope you had a good time in India.
>>>>> paplay seems to be broken in git master, git bisect tells me the culprit is:
>>>>>
>>>>> fb55798a3eb73b4c00225232408b766f74533409 is first bad commit
>>>>> commit fb55798a3eb73b4c00225232408b766f74533409
>>>>> Author: Lennart Poettering<lennart at poettering.net>
>>>>> Date:   Fri Jan 15 01:25:21 2010 +0100
>>>>>
>>>>>      pacat: allow configuration of latency in msec
>>>>>
>>>>> With this commit paplay is stuck, there's no audio out and no update
>>>>> of time/latency.
>>>>
>>>> Ahh so that's where the problem lies... I'll try and fix if Lennart
>>>> doesn't beat me to it.
>>>
>>> This fixes it for me:
>>> ff2091b pacat: Don't use any buffer attr if we don't set any
>>> latency/process time params
>>>
>>> May not be the nicest fix in the world but it'll do until Lennart can
>>> review properly :)
>>
>> Actually I had I really wanted to write what I wrote. i.e. passing
>> NULL as buffer_attr means "use the default latency" (which is
>> 250ms). Passing a buffer_attr with all values set to -1 means "i don't
>> care about latency" (which ideally means 2s latency).
>>
>> So, yes, I actually meant what I did in fb55798a... Now the question
>> is why this doesn't work for Pierre.
>
> For clarity (not sure if I mentioned it) but I did experience the same
> problem too, so it wasn't just Pierre that was affected.
>
> To be fair tho', I did only test it with small samples - e.g. less than
> 2s, so perhaps the problem is that the buffer simply never gets full
> enough to start playing?

FWIW, I see something which seems to be the same in plain Fedora 12 as 
well. pulseaudio-0.9.21-4.fc12.i686

"paplay /usr/share/sounds/alsa/Front_Center.wav" hangs, while it works 
fine with aplay.

That has tricked me a number of times to conclude that PA had stopped 
working while it actually was working just fine ... except for this.

/Mads