[asterisk-bugs] [Asterisk 0012507]: Behavior difference between commands JACK() and Set(Manipulate()=on).

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The following issue has been RESOLVED. 
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http://bugs.digium.com/view.php?id=12507 
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Reported By:                xianghaiyu
Assigned To:                russell
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Project:                    Asterisk
Issue ID:                   12507
Category:                   Applications/NewFeature
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     resolved
Asterisk Version:           1.6.0-beta6 
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.0 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
Resolution:                 no change required
Fixed in Version:           
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Date Submitted:             04-23-2008 15:45 CDT
Last Modified:              05-28-2008 12:55 CDT
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Summary:                    Behavior difference between commands JACK() and
Set(Manipulate()=on).
Description: 
I am currently working with your JACK application code app_jack.c  from
asterisk-1.6.0-Beta. I found there is a behavior difference between
commands JACK() and Set(Manipulate()=on).

Problem:
Using JACK(), sip phone can here sounds from alsa sounds input from 
system:capture_1, but not with Set(Manipulate()=on).

How to reproduce:
-SIP phone 1000
-.JACKD running /jackd -R -dalsa -r44100 -p1024 -S

Run dial from 1000 to 700 through following dial plan

exten => 700, 1, Answer()
enten => 700, 2, JACK

then  run
./jack_connect system:capture_1 SIP/1000-0823ab58:input
SIP phone CAN hear sound from mic input.

But if run
exten => 700, 1, Answer()
enten => 700, 2, Set(Manipulate()=on)

then
./jack_connect system:capture_1 SIP/1000-0823ab58:input
SIP phone CAN NOT here sound from mic input.

Check with the code  difference seen from
jack_hook_callback() and
jack_exec()
in how to handle  handle_jack_audio(chan, jack_data, frame);


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---------------------------------------------------------------------- 
 russell - 05-28-08 12:55  
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This is actually not a bug.  It is a misunderstanding of what these two
features do.


When using the Jack application, the audio sent to the input jack port is
sent _to_ the channel.

When using the Jack audiohook, the flow is different.  You are hooking
into the audio path coming _from_ the channel, not the audio being sent to
the channel.  When you write to the jack input port for that channel, you
are providing the audio that Asterisk is going to read as coming from that
channel.

Hopefully that clears things up a bit ... 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
05-28-08 12:55  russell        Note Added: 0087455                          
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