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a4f508b27c
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>
146 lines
3.6 KiB
Plaintext
146 lines
3.6 KiB
Plaintext
# ALSA soundcard-configuration
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config SND_TIMER
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tristate
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depends on SND
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config SND_PCM
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tristate
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select SND_TIMER
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depends on SND
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config SND_HWDEP
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tristate
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depends on SND
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config SND_RAWMIDI
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tristate
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depends on SND
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config SND_SEQUENCER
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tristate "Sequencer support"
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depends on SND
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select SND_TIMER
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help
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Say Y or M to enable MIDI sequencer and router support. This
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feature allows routing and enqueueing of MIDI events. Events
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can be processed at a given time.
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Many programs require this feature, so you should enable it
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unless you know what you're doing.
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config SND_SEQ_DUMMY
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tristate "Sequencer dummy client"
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depends on SND_SEQUENCER
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help
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Say Y here to enable the dummy sequencer client. This client
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is a simple MIDI-through client: all normal input events are
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redirected to the output port immediately.
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You don't need this unless you want to connect many MIDI
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devices or applications together.
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To compile this driver as a module, choose M here: the module
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will be called snd-seq-dummy.
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config SND_OSSEMUL
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bool
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depends on SND
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config SND_MIXER_OSS
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tristate "OSS Mixer API"
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depends on SND
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select SND_OSSEMUL
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help
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To enable OSS mixer API emulation (/dev/mixer*), say Y here
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and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
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Many programs still use the OSS API, so say Y.
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To compile this driver as a module, choose M here: the module
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will be called snd-mixer-oss.
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config SND_PCM_OSS
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tristate "OSS PCM (digital audio) API"
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depends on SND
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select SND_OSSEMUL
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select SND_PCM
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help
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To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
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here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
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Many programs still use the OSS API, so say Y.
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To compile this driver as a module, choose M here: the module
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will be called snd-pcm-oss.
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config SND_SEQUENCER_OSS
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bool "OSS Sequencer API"
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depends on SND && SND_SEQUENCER
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select SND_OSSEMUL
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help
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Say Y here to enable OSS sequencer emulation (both
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/dev/sequencer and /dev/music interfaces).
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Many programs still use the OSS API, so say Y.
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To compile this driver as a module, choose M here: the module
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will be called snd-seq-oss.
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config SND_RTCTIMER
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tristate "RTC Timer support"
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depends on SND && RTC
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select SND_TIMER
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help
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Say Y here to enable RTC timer support for ALSA. ALSA uses
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the RTC timer as a precise timing source and maps the RTC
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timer to ALSA's timer interface. The ALSA sequencer code also
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can use this timing source.
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To compile this driver as a module, choose M here: the module
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will be called snd-rtctimer.
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config SND_SEQ_RTCTIMER_DEFAULT
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bool "Use RTC as default sequencer timer"
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depends on SND_RTCTIMER && SND_SEQUENCER
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default y
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help
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Say Y here to use the RTC timer as the default sequencer
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timer. This is strongly recommended because it ensures
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precise MIDI timing even when the system timer runs at less
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than 1000 Hz.
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If in doubt, say Y.
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config SND_VERBOSE_PRINTK
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bool "Verbose printk"
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depends on SND
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help
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Say Y here to enable verbose log messages. These messages
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will help to identify source file and position containing
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printed messages.
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You don't need this unless you're debugging ALSA.
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config SND_DEBUG
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bool "Debug"
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depends on SND
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help
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Say Y here to enable ALSA debug code.
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config SND_DEBUG_MEMORY
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bool "Debug memory"
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depends on SND_DEBUG
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help
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Say Y here to enable debugging of memory allocations.
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config SND_DEBUG_DETECT
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bool "Debug detection"
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depends on SND_DEBUG
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help
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Say Y here to enable extra-verbose log messages printed when
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detecting devices.
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config SND_GENERIC_DRIVER
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bool
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depends on SND
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