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| author | Hans Petter Selasky <hselasky@FreeBSD.org> | 2021-07-28 11:22:52 +0000 |
|---|---|---|
| committer | Hans Petter Selasky <hselasky@FreeBSD.org> | 2021-08-06 09:28:44 +0000 |
| commit | ed2196e5df0c8b5b81563d2fffdcb32bb7ebe966 (patch) | |
| tree | f4a67140e4a7946f4b1a8a7951535c57abfe132c | |
| parent | 132fca6335939b308f230d4942ba15ba2b56ceb7 (diff) | |
| download | src-ed2196e5df0c8b5b81563d2fffdcb32bb7ebe966.tar.gz src-ed2196e5df0c8b5b81563d2fffdcb32bb7ebe966.zip | |
sound(4): Implement playback and recording mode sysctl(8).
The dev.pcm.<N>.mode sysctl(8) gives information if a sound device
supports hardware mixing, playback or recording.
Submitted by: Christos Margiolis <christos@freebsd.org>
Differential Revision: https://reviews.freebsd.org/D31320
MFC after: 1 week
Sponsored by: NVIDIA Networking
| -rw-r--r-- | sys/dev/sound/pcm/sound.c | 23 | ||||
| -rw-r--r-- | sys/dev/sound/pcm/sound.h | 4 |
2 files changed, 27 insertions, 0 deletions
diff --git a/sys/dev/sound/pcm/sound.c b/sys/dev/sound/pcm/sound.c index e03529f00b78..663ec84f93b6 100644 --- a/sys/dev/sound/pcm/sound.c +++ b/sys/dev/sound/pcm/sound.c @@ -1015,10 +1015,28 @@ SYSCTL_PROC(_hw_snd, OID_AUTO, clone_gc, "global clone garbage collector"); #endif +static u_int8_t +pcm_mode_init(struct snddev_info *d) +{ + u_int8_t mode = 0; + + if (d->playcount > 0) + mode |= PCM_MODE_PLAY; + if (d->reccount > 0) + mode |= PCM_MODE_REC; + if (d->mixer_dev != NULL) + mode |= PCM_MODE_MIXER; + + return (mode); +} + static void pcm_sysinit(device_t dev) { struct snddev_info *d = device_get_softc(dev); + u_int8_t mode; + + mode = pcm_mode_init(d); /* XXX: a user should be able to set this with a control tool, the sysadmin then needs min+max sysctls for this */ @@ -1030,6 +1048,11 @@ pcm_sysinit(device_t dev) "bitperfect", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, sizeof(d), sysctl_dev_pcm_bitperfect, "I", "bit-perfect playback/recording (0=disable, 1=enable)"); + SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), + SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), + OID_AUTO, "mode", CTLFLAG_RD, NULL, mode, + "mode (1=mixer, 2=play, 4=rec. The values are OR'ed if more than one" + "mode is supported)"); #ifdef SND_DEBUG SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, diff --git a/sys/dev/sound/pcm/sound.h b/sys/dev/sound/pcm/sound.h index 7b4a4d3a46ca..7c664524211a 100644 --- a/sys/dev/sound/pcm/sound.h +++ b/sys/dev/sound/pcm/sound.h @@ -412,6 +412,10 @@ struct snddev_info { void sound_oss_sysinfo(oss_sysinfo *); int sound_oss_card_info(oss_card_info *); +#define PCM_MODE_MIXER 0x01 +#define PCM_MODE_PLAY 0x02 +#define PCM_MODE_REC 0x04 + #define PCM_LOCKOWNED(d) mtx_owned((d)->lock) #define PCM_LOCK(d) mtx_lock((d)->lock) #define PCM_UNLOCK(d) mtx_unlock((d)->lock) |