Re: [SoX-users] Using sox with external audio devices on OSX

[Chris B. <ch...@cn...>]

On Sat, Oct 8, 2011 at 8:13 AM, Jan Stary <ha...@st...> wrote:
> On Sep 21 16:26:39, Schumacher Marlon wrote:
>> I am the only one developing SoX on OSX right now and I can not
>> reproduce the issue myself and ran out of ideas to fix.
>> Hopefully, some one that has hardware issues will some day also be
>> able to debug it.
>
> I take that as a gentle nod to finally submit a gdb trace
> of my problematic session :-)

You've provided tons of good enough in the past.  I'm not sure if a
new gdb trace will help things but maybe it will.  If you have time
with latest git, please try.

> On Sep 29 21:41:11, Chris Bagwell wrote:
>> I've fixed the bug below but can't test it very well since I only have
>> 3 audio devices (why I never saw the problem before I guess).
>
> Rebuilding from the current git tree, this is what my SoX sees:
>
> $ sox -V6 -n -t coreaudio junkname
> sox:      SoX v14.4.0
> time:     Oct  8 2011 14:25:29
> uname:    Darwin mac.stare.cz 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul
> 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386 i386
> compiler: gcc 4.0.1 (Apple Inc. build 5493)
> arch:     1248 48 44 L
> sox INFO nulfile: sample rate not specified; using 48000
>
> Input File     : '' (null)
> Channels       : 1
> Sample Rate    : 48000
> Precision      : 32-bit
>
> fCoreAudioDriverUID AppleHDAEngineInput:1
> sox INFO coreaudio: Found Audio Device "Built-in Microp"
>
> sox INFO coreaudio: Found Audio Device "Built-in Input"
>
> sox INFO coreaudio: Found Audio Device "Built-in Outpu"
>
> sox INFO coreaudio: Found Audio Device "M-Audio Mobile"
>
> sox FAIL formats: can't open output file `junkname': can not open audio
> device
>

Cool.  I submitted it hoping it would work but I only have 3 built in
devices so couldn't verify.

> (I guess the device name is limited to be a char[16] including the \0.)
>

Yeah, the function to get a list of devices truncates for some reason.
 Probably there is another function call to get full name but I think
its good enough for our purposes.

Chris