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wiz 2005-02-20 19:48:47 +00:00
parent d5b60ec1d9
commit 776ec5b176
1 changed files with 16 additions and 16 deletions
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32
share/man/man9/audio.9
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@ -1,4 +1,4 @@
.\" $NetBSD: audio.9,v 1.31 2005/02/20 19:46:15 wiz Exp $
.\" $NetBSD: audio.9,v 1.32 2005/02/20 19:48:47 wiz Exp $
.\"
.\" Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -210,7 +210,7 @@ For example, if
.Va play
requests [8000Hz, mu-law, 8/8bit, 1ch] and the hardware supports
not 8bit mu-law but 16bit slinear_le, the driver should call
.Dv pfil->append()
.Dv pfil-\*[Gt]append()
with
.Va pfil ,
.Va mulaw_to_slinear16 ,
@ -248,28 +248,28 @@ For playing,
constructs conversions as follows:
.Bd -literal
(play) == write(2) input
| pfil->filters[pfil->req_size-1].factory
(pfil->filters[pfil->req_size-1].param)
| pfil->filters[pfil->req_size-2].factory
| pfil-\*[Gt]filters[pfil-\*[Gt]req_size-1].factory
(pfil-\*[Gt]filters[pfil-\*[Gt]req_size-1].param)
| pfil-\*[Gt]filters[pfil-\*[Gt]req_size-2].factory
:
| pfil->filters[1].factory
(pfil->filters[1].param)
| pfil->filters[0].factory
(pfil->filters[0].param) == hardware input
| pfil-\*[Gt]filters[1].factory
(pfil-\*[Gt]filters[1].param)
| pfil-\*[Gt]filters[0].factory
(pfil-\*[Gt]filters[0].param) == hardware input
.Ed
.Pp
For recording,
.Va rfil
constructs conversions as follows:
.Bd -literal
(rfil->filters[0].param) == hardware output
| rfil->filters[0].factory
(rfil->filters[1].param)
| rfil->filters[1].factory
(rfil-\*[Gt]filters[0].param) == hardware output
| rfil-\*[Gt]filters[0].factory
(rfil-\*[Gt]filters[1].param)
| rfil-\*[Gt]filters[1].factory
:
| rfil->filters[rfil->req_size-2].factory
(rfil->filters[rfil->req_size-1].param)
| rfil->filters[rfil->req_size-1].factory
| rfil-\*[Gt]filters[rfil-\*[Gt]req_size-2].factory
(rfil-\*[Gt]filters[rfil-\*[Gt]req_size-1].param)
| rfil-\*[Gt]filters[rfil-\*[Gt]req_size-1].factory
(rec) == read(2) output
.Ed
.Pp