[src/trunk]: src/share/man/man9 Describe about (existing) constraints on roun...

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d7fe9b5d51a9
branches:  trunk
changeset: 969721:d7fe9b5d51a9
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Feb 29 05:39:03 2020 +0000

description:
Describe about (existing) constraints on round_blocksize().

diffstat:

 share/man/man9/audio.9 |  6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diffs (22 lines):

diff -r b5ab397ef134 -r d7fe9b5d51a9 share/man/man9/audio.9
--- a/share/man/man9/audio.9    Sat Feb 29 04:27:53 2020 +0000
+++ b/share/man/man9/audio.9    Sat Feb 29 05:39:03 2020 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: audio.9,v 1.57 2020/02/23 04:02:45 isaki Exp $
+.\"    $NetBSD: audio.9,v 1.58 2020/02/29 05:39:03 isaki Exp $
 .\"
 .\" Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -344,8 +344,12 @@
 and
 .Va param ,
 encoding parameters for the hardware.
+.Va bs
+passed is always non-zero and a multiple of the frame size represented by
+param->channels * param->precision / 8.
 It should return a block size, possibly changed according to the needs
 of the hardware driver.
+The return value also must be non-zero and a multiple of the frame size.
 It is called in the Attach or Closed phases.
 .It Dv int commit_settings(void *hdl)
 optional, is called after all calls to