Re: Multi-channel PCM player
Re: Multi-channel PCM player
- Subject: Re: Multi-channel PCM player
- From: Bill Stewart <email@hidden>
- Date: Thu, 7 Aug 2003 18:10:57 -0700
On Thursday, August 7, 2003, at 01:55 PM, Chris Reed wrote:
This is an opportunity to bring up a question I've been thinking about
for a bit now... Have you thought about adding a way to indicate the
speaker arrangement for multi-channel devices?
Yes - that is in the Panther version of AMS and is a property of the
device, so the user can describe where her speakers are.
My preference would be nice to throw this into the
AudioStreamBasicDescription structure so *any* multi-channel buffer
can carry around its assumptions about which speakers are represented
by which channels. There's that mReserved field in ASBD just begging
to be used :)
Nope - See CoreAudio/CoreAudioTypes.h in the Panther headers - we're
saving the reserved field for something else:) - so make sure you all
set this to zero!
Bill
-chris
On Thursday, Aug 7, 2003, at 12:44 US/Central, Bill Stewart wrote:
We will have something that can do all of this in the Panther release
of the SDK (though I'm not exactly sure what you mean by "RAW")
The code we're working on (hopefully this all gets done!), will also
show you how to use the matrix mixer to down mix from different
channel layouts, as well as both encoding and decoding ADTS files
that have quite a few different surround formats for AAC (various
flavours from mono to 8 channels).
So, all in all, could be interesting I think
Bill
On Thursday, August 7, 2003, at 07:27 AM, Christof Faller wrote:
For audio quality evaluations I need to play back 5 channel PCM
(AIF, WAVE, or RAW) files. Is there a simple player for MacOS X that
supports such multi-channel playback (shareware/freeware/relatively
cheap and simple software)?
If not I guess I have to write my own (hopefully not).
Does anyone know more? Thanks,
Chris
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