pulseaudio-点点滴滴
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pulseaudio点点滴滴
Pulseaudio命令
pulseaudio
- pulseaudio -h
root@2012000099:~# pulseaudio -h
pulseaudio [options]
COMMANDS:
-h, --help Show this help
--version Show version
--dump-conf Dump default configuration
--dump-modules Dump list of available modules
--dump-resample-methods Dump available resample methods
--cleanup-shm Cleanup stale shared memory segments
--start Start the daemon if it is not running
-k --kill Kill a running daemon
--check Check for a running daemon (only returns exit code)
OPTIONS:
--system[=BOOL] Run as system-wide instance
-D, --daemonize[=BOOL] Daemonize after startup
--fail[=BOOL] Quit when startup fails
--high-priority[=BOOL] Try to set high nice level
(only available as root, when SUID or
with elevated RLIMIT_NICE)
--realtime[=BOOL] Try to enable realtime scheduling
(only available as root, when SUID or
with elevated RLIMIT_RTPRIO)
--disallow-module-loading[=BOOL] Disallow module user requested module
loading/unloading after startup
--disallow-exit[=BOOL] Disallow user requested exit
--exit-idle-time=SECS Terminate the daemon when idle and this
time passed
--scache-idle-time=SECS Unload autoloaded samples when idle and
this time passed
--log-level[=LEVEL] Increase or set verbosity level
-v --verbose Increase the verbosity level
--log-target=auto,syslog,stderr,file:PATH,newfile:PATH
Specify the log target
--log-meta[=BOOL] Include code location in log messages
--log-time[=BOOL] Include timestamps in log messages
--log-backtrace=FRAMES Include a backtrace in log messages
-p, --dl-search-path=PATH Set the search path for dynamic shared
objects (plugins)
--resample-method=METHOD Use the specified resampling method
(See --dump-resample-methods for
possible values)
--use-pid-file[=BOOL] Create a PID file
--no-cpu-limit[=BOOL] Do not install CPU load limiter on
platforms that support it.
--disable-shm[=BOOL] Disable shared memory support.
STARTUP SCRIPT:
-L, --load="MODULE ARGUMENTS" Load the specified plugin module with
the specified argument
-F, --file=FILENAME Run the specified script
-C Open a command line on the running TTY
after startup
-n Don't load default script file
- pulseaudio --dump-resample-methods
root@2012000099:~# pulseaudio --dump-resample-methods
trivial
speex-float-0
speex-float-1
speex-float-2
speex-float-3
speex-float-4
speex-float-5
speex-float-6
speex-float-7
speex-float-8
speex-float-9
speex-float-10
speex-fixed-0
speex-fixed-1
speex-fixed-2
speex-fixed-3
speex-fixed-4
speex-fixed-5
speex-fixed-6
speex-fixed-7
speex-fixed-8
speex-fixed-9
speex-fixed-10
ffmpeg
auto
copy
peaks
pacmd
pactl
- pactl -h
root@2012000099:~# pactl -h
]pactl [options] stat
pactl [options] info
pactl [options] list [short] [TYPE]
pactl [options] exit
pactl [options] upload-sample FILENAME [NAME]
pactl [options] play-sample NAME [SINK]
pactl [options] remove-sample NAME
pactl [options] load-module NAME [ARGS ...]
pactl [options] unload-module NAME|#N
pactl [options] move-(sink-input|source-output) #N SINK|SOURCE
pactl [options] suspend-(sink|source) NAME|#N 1|0
pactl [options] set-card-profile CARD PROFILE
pactl [options] set-default-(sink|source) NAME
pactl [options] set-(sink|source)-port NAME|#N PORT
pactl [options] set-(sink|source)-volume NAME|#N VOLUME [VOLUME ...]
pactl [options] set-(sink-input|source-output)-volume #N VOLUME [VOLUME ...]
pactl [options] set-(sink|source)-mute NAME|#N 1|0|toggle
pactl [options] set-(sink-input|source-output)-mute #N 1|0|toggle
pactl [options] set-sink-formats #N FORMATS
pactl [options] set-port-latency-offset CARD-NAME|CARD-#N PORT OFFSET
pactl [options] subscribe
The special names @DEFAULT_SINK@, @DEFAULT_SOURCE@ and @DEFAULT_MONITOR@
can be used to specify the default sink, source and monitor.
-h, --help Show this help
--version Show version
-s, --server=SERVER The name of the server to connect to
-n, --client-name=NAME How to call this client on the server
- pactl list
root@2012000099:~# pactl list
Module #1
Name: module-alsa-sink
Argument: device_id=0
Usage counter: 1
Properties:
module.author = "Lennart Poettering"
module.description = "ALSA Sink"
module.version = "6.0-dirty"
Module #2
Name: module-alsa-source
Argument: device_id=0
Usage counter: 1
Properties:
module.author = "Lennart Poettering"
module.description = "ALSA Source"
module.version = "6.0-dirty"
Module #3
Name: module-esound-protocol-unix
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "ESOUND protocol (UNIX sockets)"
module.version = "6.0-dirty"
Module #4
Name: module-native-protocol-unix
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "Native protocol (UNIX sockets)"
module.version = "6.0-dirty"
Module #5
Name: module-stream-restore
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "Automatically restore the volume/mute/device state of streams"
module.version = "6.0-dirty"
Module #6
Name: module-device-restore
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "Automatically restore the volume/mute state of devices"
module.version = "6.0-dirty"
Module #7
Name: module-default-device-restore
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "Automatically restore the default sink and source"
module.version = "6.0-dirty"
Module #8
Name: module-rescue-streams
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "When a sink/source is removed, try to move its streams to the default sink/source"
module.version = "6.0-dirty"
Module #9
Name: module-always-sink
Argument:
Usage counter: n/a
Properties:
module.author = "Colin Guthrie"
module.description = "Always keeps at least one sink loaded even if it's a null one"
module.version = "6.0-dirty"
Module #10
Name: module-suspend-on-idle
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "When a sink/source is idle for too long, suspend it"
module.version = "6.0-dirty"
Module #11
Name: module-position-event-sounds
Argument:
Usage counter: n/a
Properties:
module.author = "Lennart Poettering"
module.description = "Position event sounds between L and R depending on the position on screen of the widget triggering them."
module.version = "6.0-dirty"
Sink #0
State: SUSPENDED
Name: alsa_output.0.analog-stereo
Description: MTK APSoC I2S Analog Stereo
Driver: module-alsa-sink.c
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 1
Mute: no
Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor Source: alsa_output.0.analog-stereo.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = ""
alsa.id = "WMserious PCM wm8960-hifi-0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "MTK APSoC I2S"
alsa.long_card_name = "MTK APSoC I2S"
alsa.driver_name = "snd_soc_core"
device.string = "hw:0"
device.buffering.buffer_size = "49152"
device.buffering.fragment_size = "6144"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "MTK APSoC I2S Analog Stereo"
device.icon_name = "audio-card-analog"
Formats:
pcm
Source #0
State: SUSPENDED
Name: alsa_output.0.analog-stereo.monitor
Description: Monitor of MTK APSoC I2S Analog Stereo
Driver: module-alsa-sink.c
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 1
Mute: no
Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor of Sink: alsa_output.0.analog-stereo
Latency: 0 usec, configured 0 usec
Flags: DECIBEL_VOLUME LATENCY
Properties:
device.description = "Monitor of MTK APSoC I2S Analog Stereo"
device.class = "monitor"
device.icon_name = "audio-input-microphone"
Formats:
pcm
Source #1
State: RUNNING
Name: alsa_input.0.analog-stereo
Description: MTK APSoC I2S Analog Stereo
Driver: module-alsa-source.c
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Owner Module: 2
Mute: no
Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor of Sink: n/a
Latency: 15820 usec, configured 106000 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = ""
alsa.id = "WMserious PCM wm8960-hifi-0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "MTK APSoC I2S"
alsa.long_card_name = "MTK APSoC I2S"
alsa.driver_name = "snd_soc_core"
device.string = "hw:0"
device.buffering.buffer_size = "49152"
device.buffering.fragment_size = "6144"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "MTK APSoC I2S Analog Stereo"
device.icon_name = "audio-input-microphone-analog"
Formats:
pcm
Sink Input #1
Driver: protocol-native.c
Owner Module: 4
Client: 3
Sink: 0
Sample Specification: s16le 1ch 8000Hz
Channel Map: mono
Format: pcm, format.sample_format = "\\"s16le\\"" format.rate = "8000" format.channels = "1" format.channel_map = "\\"mono\\""
Corked: no
Mute: no
Volume: mono: 65536 / 100% / 0.00 dB
balance 0.00
Buffer Latency: 0 usec
Sink Latency: 0 usec
Resample method: speex-fixed-1
Properties:
media.name = "ALSA Playback"
application.name = "ALSA plug-in [asterisk]"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "30"
application.process.id = "2183"
application.process.user = "root"
application.process.host = "2012000099"
application.process.binary = "asterisk"
application.language = "C"
application.process.machine_id = "2012000099"
module-stream-restore.id = "sink-input-by-application-name:ALSA plug-in [asterisk]"
Source Output #1
Driver: protocol-native.c
Owner Module: 4
Client: 2
Source: 1
Sample Specification: s16le 1ch 8000Hz
Channel Map: mono
Format: pcm, format.sample_format = "\\"s16le\\"" format.rate = "8000" format.channels = "1" format.channel_map = "\\"mono\\""
Corked: no
Mute: no
Volume: mono: 65536 / 100% / 0.00 dB
balance 0.00
Buffer Latency: 0 usec
Source Latency: 17603 usec
Resample method: speex-fixed-1
Properties:
media.name = "ALSA Capture"
application.name = "ALSA plug-in [asterisk]"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "30"
application.process.id = "2183"
application.process.user = "root"
application.process.host = "2012000099"
application.process.binary = "asterisk"
application.language = "C"
application.process.machine_id = "2012000099"
module-stream-restore.id = "source-output-by-application-name:ALSA plug-in [asterisk]"
Client #2
Driver: protocol-native.c
Owner Module: 4
Properties:
application.name = "ALSA plug-in [asterisk]"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "30"
application.process.id = "2183"
application.process.user = "root"
application.process.host = "2012000099"
application.process.binary = "asterisk"
application.language = "C"
application.process.machine_id = "2012000099"
Client #3
Driver: protocol-native.c
Owner Module: 4
Properties:
application.name = "ALSA plug-in [asterisk]"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "30"
application.process.id = "2183"
application.process.user = "root"
application.process.host = "2012000099"
application.process.binary = "asterisk"
application.language = "C"
application.process.machine_id = "2012000099"
Client #6
Driver: protocol-native.c
Owner Module: 4
Properties:
application.name = "pactl"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "30"
application.process.id = "20264"
application.process.user = "root"
application.process.host = "2012000099"
application.process.binary = "pactl"
application.language = "C"
application.process.machine_id = "2012000099"
parecord
paplay
root@2012000099:~# paplay -h
paplay [options]
-h, --help Show this help
--version Show version
-r, --record Create a connection for recording
-p, --playback Create a connection for playback
-v, --verbose Enable verbose operations
-s, --server=SERVER The name of the server to connect to
-d, --device=DEVICE The name of the sink/source to connect to
-n, --client-name=NAME How to call this client on the server
--stream-name=NAME How to call this stream on the server
--volume=VOLUME Specify the initial (linear) volume in range 0...65536
--rate=SAMPLERATE The sample rate in Hz (defaults to 44100)
--format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,
float32be, ulaw, alaw, s32le, s32be, s24le, s24be,
s24-32le, s24-32be (defaults to s16ne)
--channels=CHANNELS The number of channels, 1 for mono, 2 for stereo
(defaults to 2)
--channel-map=CHANNELMAP Channel map to use instead of the default
--fix-format Take the sample format from the sink/source the stream is
being connected to.
--fix-rate Take the sampling rate from the sink/source the stream is
being connected to.
--fix-channels Take the number of channels and the channel map
from the sink/source the stream is being connected to.
--no-remix Don't upmix or downmix channels.
--no-remap Map channels by index instead of name.
--latency=BYTES Request the specified latency in bytes.
--process-time=BYTES Request the specified process time per request in bytes.
--latency-msec=MSEC Request the specified latency in msec.
--process-time-msec=MSEC Request the specified process time per request in msec.
--property=PROPERTY=VALUE Set the specified property to the specified value.
--raw Record/play raw PCM data.
--passthrough Passthrough data.
--file-format[=FFORMAT] Record/play formatted PCM data.
--list-file-formats List available file formats.
--monitor-stream=INDEX Record from the sink input with index INDEX.
```
#### parecord
```
root@2012000099:~# parecord -h
parecord [options]
-h, --help Show this help
--version Show version
-r, --record Create a connection for recording
-p, --playback Create a connection for playback
-v, --verbose Enable verbose operations
-s, --server=SERVER The name of the server to connect to
-d, --device=DEVICE The name of the sink/source to connect to
-n, --client-name=NAME How to call this client on the server
--stream-name=NAME How to call this stream on the server
--volume=VOLUME Specify the initial (linear) volume in range 0...65536
--rate=SAMPLERATE The sample rate in Hz (defaults to 44100)
--format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,
float32be, ulaw, alaw, s32le, s32be, s24le, s24be,
s24-32le, s24-32be (defaults to s16ne)
--channels=CHANNELS The number of channels, 1 for mono, 2 for stereo
(defaults to 2)
--channel-map=CHANNELMAP Channel map to use instead of the default
--fix-format Take the sample format from the sink/source the stream is
being connected to.
--fix-rate Take the sampling rate from the sink/source the stream is
being connected to.
--fix-channels Take the number of channels and the channel map
from the sink/source the stream is being connected to.
--no-remix Don't upmix or downmix channels.
--no-remap Map channels by index instead of name.
--latency=BYTES Request the specified latency in bytes.
--process-time=BYTES Request the specified process time per request in bytes.
--latency-msec=MSEC Request the specified latency in msec.
--process-time-msec=MSEC Request the specified process time per request in msec.
--property=PROPERTY=VALUE Set the specified property to the specified value.
--raw Record/play raw PCM data.
--passthrough Passthrough data.
--file-format[=FFORMAT] Record/play formatted PCM data.
--list-file-formats List available file formats.
--monitor-stream=INDEX Record from the sink input with index INDEX.
```
## 参考文档
<https://www.freedesktop.org/wiki/Software/PulseAudio/FAQ/>
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