Multi channel sound and sound devices in VLC
Multi channel sound and sound devices in VLC
- Subject: Multi channel sound and sound devices in VLC
- From: Derk-Jan Hartman <email@hidden>
- Date: Sun, 19 Oct 2003 12:46:58 +0200
Hallo all,
I'm new on this list, and would like to ask the following.
I'm sure many of you are familiar with VLC media player (
http://www.videolan.org/vlc ). It's a highly portable multimedia player
for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3,
ogg, ...) as well as DVDs, VCDs, and various streaming protocols.
We are also currently the only DVD player on OS X that supports
multichannel audio devices. (will change of course in panther). This
code was originally written by the developers of the M-audio drivers i
believe and contributed to them to our project for which we are very
grateful.
However as of late more problems with devices keep popping up. This is
because of changing coreaudio code at apple's side as well as new
drivers and even changes in our own plugin. The big problem is that
none of the current OSX developers at VLC understand CoreAudio very
well, and a bigger problem is that we don't have that many audio
devices (actually there is one developer with an M-audio revolution and
he is no longer really active on VLC).
So i was wondering if some people on this list could help us out? Could
people please test VLC's multichannel output (both ac3 and DTS?) and
clearly explain what fails and what doesn't? Users often are plain
clueless and their bugreports not very useful (what else is new, he ;).
We would love to continue to support multichannel, but i fear that with
this code being unmaintained much longer, we might need to revert to
something simpler. And of course if anyone has any interest in this and
knows how to work CoreAudio, we would very much love to see you aboard.
This is our current code for the plugin:
http://www.videolan.org/cgi-bin/cvsweb/vlc/modules/audio_output/
coreaudio.c?rev=1.6&content-type=text/x-cvsweb-markup
We also have a resampler, because apparently many of apple's audio
devices don't like 52khz and 48khz
This one works most of the time :)
http://www.videolan.org/cgi-bin/cvsweb/vlc/modules/audio_filter/
resampler/coreaudio.c?rev=1.4&content-type=text/x-cvsweb-markup
Thanks for your time,
greetings, Derk-Jan Hartman
---
Videolan - VLC media player
Derk-Jan Hartman (email@hidden)
Co-Developer of the MacOS X port of vlc
http://www.videolan.org/vlc
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