Subject: Re: PCM8 vs. PCM16/LINEAR?
To: None <tech-kern@NetBSD.ORG>
From: Mike Long <firstname.lastname@example.org>
Date: 08/03/1995 09:59:55
>Date: Wed, 2 Aug 1995 23:36:39 -0400
>From: John Kohl <email@example.com>
>Oh, and you forgot an unsigned linear 8-bit encoding in your table
>(that's the native format on sb and sb-pro. The newer cards might also
>like 16-bit unsigned linear?)
I noticed while rereading the AD1846 datasheet last night that the
1846's 16-bit linear mode is signed, while its 8-bit linear mode is
unsigned. All of the other codecs are probably the same way.
So we add
#define AUDIO_ENCODING_ULINEAR 4
to fill up that unsightly hole between AUDIO_ENCODING_LINEAR (3) and
That reminds me. There are multiple ADPCM formats out there, which
does AUDIO_ENCODING_ADPCM represent? IMA, G.722 (not sure about that
#), Creative Labs? A bit academic because no one uses it yet.
Mike Long <firstname.lastname@example.org> http://www.shore.net/~mikel
VLSI Design Engineer finger email@example.com for PGP public key
Analog Devices, CPD Division CCBF225E7D3F7ECB2C8F7ABB15D9BE7B
Norwood, MA 02062 USA assert(*this!=opinionof(Analog));