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The Advanced Linux Sound Architecture (ALSA) - utilities
b83a8cd3be
In aplay, many command-line options are supported. Some of them have
dependency or conflicts. Furthemore, some of them are just for
runtime configuration of alsa-lib(libasound), and some options can
be used by several xfer backends commonly; e.g. options for file name,
sample format and sampling rate.
This commit adds a parser for the common options below.
* --help (-h)
* Just output 'help' string (not written yet).
* --verbose (-v)
* For verbose output, including information about xfer, mapper and
container.
* --format (-f): string. format literals or one of ['cd'|'cdr'|'dat']
* For sample format supported by ALSA PCM interface. Special format
can be used. For playback, this is auto-detected according to actual
file format.
* --channels (-c)
* For the number of samples included in one data frame. For playback,
this is auto-detected according to actual file format, except for
'raw' format. This option can conflict to above format option.
* --rate (-r)
* For the number of data frames transferred in one second. For playback,
this is auto-detected according to actual file format, except for
'raw' format. This option can conflict to format option above.
* --file-type (-f): string. one of ['wav'|'au'|'voc'|'raw']
* For format of files of given paths. For playback, this is optional
because the format is auto-detected. For capture, this is optional too
because the format is decided according to suffix of given path.
Anyway, this option is used for cases to fail to detect or decide.
* --separate-channels (-I)
* When using several files as source or destination for transmission
of data frame, this option can be used with several file paths.
When '--separate-channels' option is used, users can give several file
paths to source/destination of data transmission, else they can give single
file path for the purpose. When multiple files are handled by this option,
for playback, data frames in first channel is used to construct buffer for
data transmission with multi channel. For capture, data frames in each
channel of buffer are written to each of given path. Furthermore, when a
single path is given for capture, file paths are auto-generated according
to available number of channels. For example, 'name.wav' is given for
2 channels capture, 'name-0.wav' and 'name-1.wav' are generated. In a
case of no suffix, 'name-0' and 'name-1' are generated.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
|
||
|---|---|---|
| alsa-info | ||
| alsaconf | ||
| alsactl | ||
| alsaloop | ||
| alsamixer | ||
| alsaucm | ||
| amidi | ||
| amixer | ||
| aplay | ||
| axfer | ||
| bat | ||
| iecset | ||
| include | ||
| m4 | ||
| po | ||
| seq | ||
| speaker-test | ||
| topology | ||
| utils | ||
| .gitignore | ||
| .travis.yml | ||
| acinclude.m4 | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| gitcompile | ||
| INSTALL | ||
| Makefile.am | ||
| README.md | ||
| TODO | ||
alsa-utils
Advanced Linux Sound Architecture - Utilities
This package contains the command line utilities for the ALSA project. The package can be compiled only with the installed ALSA driver and the ALSA C library (alsa-lib).
| Utility | Description |
|---|---|
| alsaconf | the ALSA driver configurator script |
| alsa-info | a script to gather information about ALSA subsystem |
| alsactl | an utility for soundcard settings management |
| aplay/arecord | an utility for the playback / capture of .wav,.voc,.au files |
| amixer | a command line mixer |
| alsamixer | a ncurses mixer |
| amidi | a utility to send/receive sysex dumps or other MIDI data |
| iecset | a utility to show/set the IEC958 status bits |
| speaker-test | a speaker test utility |
| alsaloop | a software loopback for PCM devices |
| alsaucm | Use Case Manager utility |
| alsabat | a sound tester for ALSA sound card driver |
| alsatplg | ALSA topology compiler |
You may give a look for more information about the ALSA project to URL http://www.alsa-project.org.