Newbie questions: osxaudiosink, USB DAC and integer mode

[Sérgio Agostinho]

Hey,

Here are couple of pointers

2) It is likely using the audioconverter element for that.
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-audioconvert.html
To really know what is going on I recommend digging into
http://cgit.freedesktop.org/gstreamer/gst-plugins-base/tree/gst/audioconvert


3) It won't.

Cheers



2015-08-03 13:24 GMT+02:00 novazeta <novazeta at gmail.com>:

> Dear all
>
> I'm running the MPD-based Mopidy music server software that uses gstreamer
> as its audio playback engine. I'm running OS X Yosemite (10.10) and also
> have a USB DAC (Audioquest Dragonfly v1.2).
>
> I've configured OS X so that the DAC has the correct sampling rate for my
> music (44.1kHz - all my music files are 16-bit/44.1kHz wav files).
>
> I have a few newbie questions that I would really like guidance on. Please
> accept my apologies if these are really simple questions, but I'm still
> getting my head around how gstreamer works:
>
> 1) My overall question is: is there a way to send bit perfect data to OS
> X's underlying CoreAudio? I have some subquestions pertaining to this...
>
> 2) I'm using osxaudiosink as the output sink. Using gst-inspect, I notice
> that this works with floats, however OS X is using integer mode for the DAC
> (44.1kHz/24bit Integer mode) and doesn't even provide an option for using
> floats instead. What kind of conversion will gstreamer/osxaudiosink do
> regarding int/float and also regarding 16-bit -> 24-bit?
>
> 3) If the sample rate of the wav file and the sample rate set for the DAC
> within OS X are the same (i.e. 44.1kHz), will gstreamer still perform any
> resampling?
>
> Thanks!
> Khilan
>
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> gstreamer-devel at lists.freedesktop.org
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>
>
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