Re: monitoring system audio output like wire tap
Re: monitoring system audio output like wire tap
- Subject: Re: monitoring system audio output like wire tap
- From: Alex Kac <email@hidden>
- Date: Fri, 17 Jul 2009 15:51:26 -0500
Also would I not be right in saying that you should file a bug report
requesting this sort of feature?
On Jul 17, 2009, at 3:47 PM, Jeff Moore wrote:
On Jul 17, 2009, at 11:42 AM, Yan Bellavance wrote:
I need to make an application that renders into memory all audio
going to the line-out. It seems I cannot do this with the core-
audio API.
This is correct.
Could you explain to me how I can do this and guide me to the
resources needed? I found one application that does this (not open
source though) and the name is wireTap. I do not want to do it
like soundflower. Should I use clients for this?
There is no API for doing this, just various hacks/work-arounds that
folks have come up with. The most straight forward way would be to
write a fake driver to do what you want. Soundflower and JACK would
be good examples of this approach. Soundflower uses a kernel driver
while JACK uses a user-land driver.
Folks are clever and have come up with other ways to do it as well.
But I'll let them speak for themselves if they are inclined to share
their techniques. At any rate, you might want to start your
education on this by reading the list archives as this topic comes
up on a regular basis.
--
Jeff Moore
Core Audio
Apple
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