Is it possible that this (irregularity in heartbeat messages) could result in
no sound whatsoever to be recorded?
Is there an easy way to ensure that I always use the multimedia timer? Other
than adding a return 1; statement to the top of openSpeakerDevices :-)
Regards,
Daníel
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Fri, 6 Jul 2007 11:44:11
-0400Subject: Re: [sipxtapi-dev] Recording - again...
sipXtapi works on 10 ms audio frames. A core part of the library is a heartbeat
message sent every 10 ms used to synchronize audio processing. Under Windows,
this heartbeat message is generated each time the speaker device requests
another buffer of audio (see function speakerCallbackProc() in file
SpeakerThreadWnt.cpp in the sipXmediaLib project). If sipXtapi isn’t able to
open a speaker device, it sets up a Windows multimedia timer to generate a
heartbeat every 10 ms. If the speaker thread is succeeding in using the Windows
speaker device, then it’s quite likely that the heartbeat message is much less
regular than when it is being generated from hardware.
Configuring sipXtapi to ignore the speaker device might improve things, as the
Windows multimedia timer is probably more precise than the timing provided by
the speaker driver, or compile with DISABLE_LOCAL_AUDIO.
Stephen C. Steel
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Daniel
SigurgeirssonSent: Friday, July 06, 2007 10:57To: [EMAIL PROTECTED]: Re:
[sipxtapi-dev] Recording - again...
Hi all, I just tested the same version (9770 with Jaroslavs recording patch)
against my test setup (Axon PBX), and everything works fine. The only thing
that is different between the two setups is that on the client site, the
computer which was running my softphone application (I guess it is classified
as a soft phone, even though it will only receive calls) is a server which
didn't have any audio devices (except for some default Microsoft speaker
device, which was muted and couldn't be unmuted). Does the recording function
in sipxtapi require the computer to have functioning sound devices to be able
to record sound? Regards,Daníel
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Thu, 5 Jul 2007 15:21:48
+0000Subject: [sipxtapi-dev] Recording - again...Hi all, I'm deploying my
application on the client computer, and recording doesn't work. A recording
file is created, of the correct length, and it plays without errors in Windows
Media Player, but absolutely nothing is recorded. I'm using a very recent
version (rev. 9770 probably of sipxtapi), with Jaroslavs recording patch
applied (by hand), and I modified the project settings so HAVE_SPEEX and
HAVE_GSM are defined. I've done modifications so that both speaker and call are
recorded, both contain the same, i.e. the same number of seconds of silence.
When I connect to the same phone number using X-lite, I can hear sound/voice on
both ends. Any ideas? What can I do to debug my way to figure out the problem?
I cannot test the setup agains another phone station at the moment (but I will
as soon as I can), so I cannot tell if the problem is in the code or if this
has something do do with routing or other setup. I'm guessing that it would
help running Wireshark/Ethereal, but my knowledge on how to configure it to
watch RTP traffic is unfortunately lacking to say the least... Regards,Daníel
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