NAME

       alsatplg - ALSA Topology Compiler

SYNOPSIS

       alsatplg <options> [command]

DESCRIPTION

       alsatplg  (ALSA Topology compiler) is a program to compile topology configuration file to the binary file
       for the kernel drivers.

       Current audio drivers typically hard code topology  information  in  the  driver  sources:  This  tightly
       couples  the audio driver to the development board making it time consuming to modify a driver to work on
       a different devices. The driver is also tightly coupled to the DSP firmware version meaning extra care is
       needed to keep the driver and firmware version in sync.  New firmware features also mean driver updates.

       The  ALSA  topology project removes the need for re-writing or porting audio drivers to different devices
       or different firmwares: Drivers have no hard coded topology data meaning a single driver can be  used  on
       different  devices  by  updating  the  topology data from the file system. Firmware updates can be pushed
       without having to update the drivers. The new firmware just needs to include  an  updated  topology  file
       describing the update.

OPTIONS

       Available options:

          -h, --help
                 this help

          -V, --version
                 show the utility version and versions of used libraries

          -c, --compile FILE
                 source configuration file for the compilation

          -d, --decode FILE
                 source binary topology file for the decode

          -n, --normalize FILE
                 parse and save the configuration file in the normalized format

          -u, --dump FILE
                 parse and save the configuration file in the specified format

          -o, --output FILE
                 output file

          -v, --verbose LEVEL
                 set verbose level

          -s, --sort
                 sort the configuration identifiers (set for normalization)

          -x, --nocheck
                 save the configuration without additional integrity check

          -z, --dapm-nosort
                 do not sort DAPM graph items (like in version 1.2.1-)

FILES

       The master topology files for each supported sound card are in /usr/share/alsa/topology.

       For     example,     the     master    use    case    file    for    the    broadwell    card    is    in
       /usr/share/alsa/topology/broadwell/broadwell.conf, this file describes the audio hardware for the driver.

       For   more   details   on   the   syntax   of   UCM   files,    see    the    alsa-lib    source    code:
       http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/topology/parser.c

SEE ALSO

       • Topology Interface: http://www.alsa-project.org/alsa-doc/alsa-lib/group__topology.html

BUGS

       None known.

AUTHOR

       Jaroslav Kysela <perex@perex.cz>

COPYRIGHT

       GPLv2+

                                                   2018-10-09                                        ALSATPLG(1)