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aiomixer(1): Fix setting volume on sb(4) emulated in QEMU. 

The driver does not return a "delta", assume it's 16.
This commit is contained in:
nia 2024-05-20 22:21:45 +00:00
parent 7964e1f2d6
commit d257b0e8a9
1 changed files with 7 additions and 2 deletions
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9
usr.bin/aiomixer/main.c
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@ -1,4 +1,4 @@
/* $NetBSD: main.c,v 1.5 2023/06/29 19:06:54 nia Exp $ */
/* $NetBSD: main.c,v 1.6 2024/05/20 22:21:45 nia Exp $ */
/*-
* Copyright (c) 2021 The NetBSD Foundation, Inc.
* All rights reserved.
@ -149,7 +149,12 @@ slide_control(struct aiomixer *aio,
switch (info->type) {
case AUDIO_MIXER_VALUE:
delta = right ? info->un.v.delta : -info->un.v.delta;
if (info->un.v.delta != 0) {
delta = right ? info->un.v.delta : -info->un.v.delta;
} else {
/* delta is 0 in qemu with sb(4) */
delta = right ? 16 : -16;
}
/*
* work around strange problem where the level can be
* increased but not decreased, seen with uaudio(4)