linux/sound/core/Kconfig
Clemens Ladisch a4f508b27c [ALSA] rtctimer: add option to make RTC timer the default sequencer timer
ALSA Core,ALSA sequencer
Add an option to make the RTC timer the default sequencer timer.  This
becomes necessary for precise MIDI timing when the system timer runs at
less than 1000 Hz.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2005-09-12 10:42:05 +02:00

145 lines
3.6 KiB
Text

# ALSA soundcard-configuration
config SND_TIMER
tristate
depends on SND
config SND_PCM
tristate
select SND_TIMER
depends on SND
config SND_HWDEP
tristate
depends on SND
config SND_RAWMIDI
tristate
depends on SND
config SND_SEQUENCER
tristate "Sequencer support"
depends on SND
select SND_TIMER
help
Say Y or M to enable MIDI sequencer and router support. This
feature allows routing and enqueueing of MIDI events. Events
can be processed at a given time.
Many programs require this feature, so you should enable it
unless you know what you're doing.
config SND_SEQ_DUMMY
tristate "Sequencer dummy client"
depends on SND_SEQUENCER
help
Say Y here to enable the dummy sequencer client. This client
is a simple MIDI-through client: all normal input events are
redirected to the output port immediately.
You don't need this unless you want to connect many MIDI
devices or applications together.
To compile this driver as a module, choose M here: the module
will be called snd-seq-dummy.
config SND_OSSEMUL
bool
depends on SND
config SND_MIXER_OSS
tristate "OSS Mixer API"
depends on SND
select SND_OSSEMUL
help
To enable OSS mixer API emulation (/dev/mixer*), say Y here
and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
Many programs still use the OSS API, so say Y.
To compile this driver as a module, choose M here: the module
will be called snd-mixer-oss.
config SND_PCM_OSS
tristate "OSS PCM (digital audio) API"
depends on SND
select SND_OSSEMUL
select SND_PCM
help
To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
Many programs still use the OSS API, so say Y.
To compile this driver as a module, choose M here: the module
will be called snd-pcm-oss.
config SND_SEQUENCER_OSS
bool "OSS Sequencer API"
depends on SND && SND_SEQUENCER
select SND_OSSEMUL
help
Say Y here to enable OSS sequencer emulation (both
/dev/sequencer and /dev/music interfaces).
Many programs still use the OSS API, so say Y.
To compile this driver as a module, choose M here: the module
will be called snd-seq-oss.
config SND_RTCTIMER
tristate "RTC Timer support"
depends on SND && RTC
select SND_TIMER
help
Say Y here to enable RTC timer support for ALSA. ALSA uses
the RTC timer as a precise timing source and maps the RTC
timer to ALSA's timer interface. The ALSA sequencer code also
can use this timing source.
To compile this driver as a module, choose M here: the module
will be called snd-rtctimer.
config SND_SEQ_RTCTIMER_DEFAULT
bool "Use RTC as default sequencer timer"
depends on SND_RTCTIMER && SND_SEQUENCER
default y
help
Say Y here to use the RTC timer as the default sequencer
timer. This is strongly recommended because it ensures
precise MIDI timing even when the system timer runs at less
than 1000 Hz.
If in doubt, say Y.
config SND_VERBOSE_PRINTK
bool "Verbose printk"
depends on SND
help
Say Y here to enable verbose log messages. These messages
will help to identify source file and position containing
printed messages.
You don't need this unless you're debugging ALSA.
config SND_DEBUG
bool "Debug"
depends on SND
help
Say Y here to enable ALSA debug code.
config SND_DEBUG_MEMORY
bool "Debug memory"
depends on SND_DEBUG
help
Say Y here to enable debugging of memory allocations.
config SND_DEBUG_DETECT
bool "Debug detection"
depends on SND_DEBUG
help
Say Y here to enable extra-verbose log messages printed when
detecting devices.
config SND_GENERIC_DRIVER
bool
depends on SND