From: Tim Newsham <newsham@lava.net>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] audio standards -- too many to choose from
Date: Fri, 14 Aug 2009 10:03:58 -1000 [thread overview]
Message-ID: <Pine.BSI.4.64.0908141001030.20861@malasada.lava.net> (raw)
In-Reply-To: <3d3385604e20801b070c4d136bb01577@quanstro.net>
>> By this logic, I need to have my application to convert CDROM-XA ADPCM
>> audio from a device into PCM just to talk to an interface, which in turn
>> must convert it back into ADPCM to play it back because the DMA
>> transfers to the audio hardware buffer require ADPCM.
>
> the problem with supporting everything the hardware will
> do is that it's quite expensive in terms of development time.
> and that is the scarce resource that needs to be optimized.
It can be, but in this case you're literally talking about
the ability to parse "enc <format type>", a table mapping
format names to numbers, code to poke that into some
card-specific register, and possibly the ability to list out
all of the supported formats... More code, to be sure, but
not a lot of it.
> it also will make the interfaces much bulkier because you have
> to make accomidations for the quirks of n formats.
I haven't been able to think of any. Perhaps just my lack
of imagination.
> - erik
Tim Newsham
http://www.thenewsh.com/~newsham/
next prev parent reply other threads:[~2009-08-14 20:03 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-12 1:08 Tim Newsham
2009-08-12 1:14 ` erik quanstrom
2009-08-12 1:31 ` Tim Newsham
2009-08-12 1:45 ` erik quanstrom
2009-08-12 2:07 ` Tim Newsham
2009-08-12 3:14 ` ron minnich
2009-08-12 3:24 ` erik quanstrom
2009-08-12 4:49 ` Charles Forsyth
2009-08-12 4:24 ` Russ Cox
2009-08-12 4:35 ` Charles Forsyth
2009-08-12 15:12 ` Russ Cox
2009-08-12 4:36 ` Roman Shaposhnik
2009-08-12 15:36 ` hiro
2009-08-14 2:45 ` Roman V. Shaposhnik
2009-08-14 13:56 ` hiro
2009-08-12 5:15 ` Tim Newsham
2009-08-12 5:39 ` Roman Shaposhnik
2009-08-12 8:28 ` Tim Newsham
2009-08-12 9:30 ` Steve Simon
2009-08-13 2:16 ` Roman Shaposhnik
2009-08-13 3:17 ` erik quanstrom
2009-08-13 22:48 ` James Tomaschke
2009-08-13 22:52 ` erik quanstrom
2009-08-13 23:19 ` Christopher Nielsen
2009-08-13 23:47 ` James Tomaschke
2009-08-14 0:00 ` erik quanstrom
2009-08-14 1:13 ` James Tomaschke
2009-08-14 1:41 ` Anthony Sorace
2009-08-14 2:30 ` James Tomaschke
2009-08-14 1:42 ` Devon H. O'Dell
2009-08-14 1:51 ` Devon H. O'Dell
2009-08-14 2:22 ` James Tomaschke
2009-08-14 3:16 ` Charles Forsyth
2009-08-14 3:42 ` James Tomaschke
2009-08-14 7:04 ` Charles Forsyth
2009-08-14 20:43 ` James Tomaschke
2009-08-15 9:26 ` Steve Simon
2009-08-14 13:16 ` matt
2009-08-14 4:51 ` Devon H. O'Dell
2009-08-14 5:01 ` Devon H. O'Dell
2009-08-14 5:56 ` James Tomaschke
2009-08-19 9:58 ` matt
2009-08-14 5:18 ` James Tomaschke
2009-08-14 14:39 ` Devon H. O'Dell
2009-08-14 9:16 ` Paul Donnelly
2009-08-14 13:47 ` hiro
2009-08-14 20:03 ` Tim Newsham [this message]
2009-08-14 21:24 ` sqweek
2009-08-14 21:54 ` Skip Tavakkolian
2009-08-15 12:23 ` hiro
2009-08-14 22:05 ` Bakul Shah
2009-08-12 5:43 ` Anthony Sorace
2009-08-12 5:59 ` Roman Shaposhnik
2009-08-12 6:11 ` Roman Shaposhnik
2009-08-12 11:18 ` erik quanstrom
2009-08-13 2:06 ` Roman Shaposhnik
2009-08-12 22:11 ` James Tomaschke
2009-08-13 7:45 ` Skip Tavakkolian
2009-08-12 4:20 ` Roman Shaposhnik
2009-08-12 4:25 ` erik quanstrom
2009-08-12 4:50 ` Roman Shaposhnik
2009-08-12 5:10 ` Tim Newsham
2009-08-12 5:25 ` Roman Shaposhnik
2009-08-12 15:42 ` David Leimbach
2009-08-12 5:15 ` Anthony Sorace
2009-08-13 6:42 ` Skip Tavakkolian
2009-08-13 13:07 ` erik quanstrom
2009-08-13 13:30 ` Skip Tavakkolian
2009-08-13 13:31 ` Devon H. O'Dell
2009-08-13 14:31 ` Anthony Sorace
2009-08-13 14:41 ` Devon H. O'Dell
2009-08-13 17:20 ` hiro
2009-08-12 15:30 ` hiro
2009-08-12 5:54 ` Lawrence E. Bakst
2009-08-12 6:13 ` Roman Shaposhnik
2009-08-12 19:50 ` Tim Newsham
2009-08-12 20:57 ` Bakul Shah
2009-08-13 2:18 ` Roman Shaposhnik
2009-08-13 3:46 ` Tim Newsham
2009-08-13 17:00 ` Devon H. O'Dell
2009-08-13 19:13 ` Christopher Nielsen
2009-08-15 0:44 erik quanstrom
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Pine.BSI.4.64.0908141001030.20861@malasada.lava.net \
--to=newsham@lava.net \
--cc=9fans@9fans.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).