hi,
here is max again.
First of all I have to say that your answers are very helpfully, and week by week I`m nearer by my aim I want to do with PA.
I have some trouble with:
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[/shell]
usr at CST-G2L2:~$ arecord | pacat -p -s 192.56.1.3 -d out -v
Opening a playback stream with sample specification 's16le 2ch 44100Hz'.
Connection established.
Stream successfully created.
Buffer metrics: maxlength=132300, tlength=88200, prebuf=87320, minreq=880
Recording WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono
Time: 0.000 sec; Latency: 1234567890ms (goes up to endless)
[shell/]
The pacat-source is connected with the sink ?out?, but there is no level at volume meter at the reciver site. Each 30 s I see a short amplitude at the level meter, the amplitude goes up to 0dB and after 0.5 s back to circa ? 120dB.
I reach the the host I want to reach but the packets are empty (or it send the wrong things).
The second strange thing is that the Latency (I see it through -v option) goes up to endless, or till I push CTRL-C.
If I try
[/shell]
arecord test.wav
[shell/]
It works and I record the mic capture.
If I try
[/shell]
aplay test.wav | pacat -p -s 192.56.1.3 -d out
[shell/]
Also no problem, I recive the audio at alsa-sink ?out?.
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Let`s assume I load a source (eg mic) at Host1 and a load tunnel sink (eg out) from Host2, how can I route the source to the sink?
I want to do this without the modules module-rtp-{send/recv}!
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Next, every time I load a source/sink, with load-module, I have to read this message:
[/shell]
>>> load-module module-alsa-source device=plughw:0,0 rate=48000 source_name=mic
ALSA lib control.c:910:(snd_ctl_open_noupdate) Invalid CTL plughw:0,0
alsa-util.c: Unable to attach to mixer plughw:0,0: File or Folder not found
[shell/]
Which mixer it means? Alsamixer?
My setup also works with this ?error? message, so it could be the best to ignore it? Or is it a problem with my kernel (2.6.16-2-686 stable)?
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If I send a RTP-Stream via ?rtp-send source=mic loop=1? I don`t get the mic signal to my output sink or to my output.monitor.
[/shell]
>>>load-module module-rtp-send source=mic loop=1
>>> ls (only importent things)
Default sink name: output
Default source name: mic
7 module(s) loaded.
index: 4
name: <module-alsa-source>
argument: <device=plughw:0,0 fragments=2 fragment_size=128
rate=48000 format=alaw channels=1 source_name=mic>
used: 1
auto unload: no
index: 6
name: <module-alsa-sink>
argument: <device=plughw:0,0 >
used: 0
auto unload: no
index: 14
name: <module-rtp-send>
argument: <source=mic loop=1>
used: -1
auto unload: no
1 sink(s) available.
* index: 0
name: <output>
driver: <modules/module-alsa-sink.c>
volume: <0: 90% 1: 90%>
latency: <5166 usec>
monitor_source: <1>
sample spec: <s16le 2ch 48000Hz>
channel map: <front-left,front-right>
owner module: <6>
description: <ALSA PCM on plughw:0 (NVidia nForce2)>
2 source(s) available.
* index: 0
name: <mic>
driver: <modules/module-alsa-source.c>
latency: <1500 usec>
sample spec: <aLaw 1ch 48000Hz>
channel map: <mono>
owner module: <4>
description: <ALSA PCM on plughw:0,0 (NVidia nForce2)>
index: 3
name: <output.monitor>
driver: <modules/module-alsa-sink.c>
latency: <0 usec>
sample spec: <aLaw 1ch 48000Hz>
channel map: <mono>
monitor_of: <2>
owner module: <15>
description: <Monitor Source of ALSA PCM on plughw:0 (NVidia nForce2)>
0 sink input(s) available. #--> WHY IS HERE NO SINK?????
1 source outputs(s) available.
index: 12
name: 'RTP Monitor Stream'
driver: <modules/rtp/module-rtp-send.c>
state: RUNNING
source: <0> 'mic'
sample spec: <aLaw 1ch 48000Hz>
channel map: <mono>
resample method: src-sinc-fastest
owner module: <14>
0 cache entries available.
0 autoload entries available.
[/shell]
When you look at the loaded modules, you see in each module at the third row after the index the parameter "used". I guess 1 is for used; 0 for not used; -1 for used by a stream ?????
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The next one is about the troughput speed:
If I add the latency of source module and the latency of the rtp-send module together the result is the time from the beginning of signal to the point when my packets send out of my ethernet device !?
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Which is the advantage of the module-null-sink? Is it for people who doesn`t have an audio device?
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And the last question is about the deamon parameter ?high-priority=1 what is the effect about this option? Is it the process priority at machine!?
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thanks in advance
max
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