An utility that monitors and prints the current volume of PulseAudio sink without polling.
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CMakeLists.txt
LICENSE.txt
README.md
main.cpp

README.md

PulseAudio console volume monitor

This is a text-based PulseAudio volume monitor.

At startup, it prints a new line with the current system volume as a percentage. Every time the system volume is changed, a new line is printed with the new value.

This is intended to be used in scripts like those for desktop widgets such as lemonbar and conky. This utility provides accurate readings without needing to resort to polling.

Building

You can use the typical building procedure for CMake projects:

mkdir build && cd build
cmake <path to project>
make

Example usage

Execute the command in the terminal and change your system volume using hotkeys, your desktop controls or pavucontrol.

$ ./pulse_volume_monitor --desired-sink analog
57.341%
57.9636%
57.9636%
59.1217%
59.8343%
60.6354%
61.0794%

Usage

USAGE: 

   ./pulse_volume_monitor  [-s <name>] [-j] [-v] [--] [--version] [-h]


Where: 

   -s <name>,  --desired-sink <name>
     Insert here part of the name of an audio card (as seen in pavucontrol)
     and it will be selected instead of just picking the first available.

   -j,  --json
     Use detailed JSON output.

   -v,  --verbose
     Shows more information than really necessary.

   --,  --ignore_rest
     Ignores the rest of the labeled arguments following this flag.

   --version
     Displays version information and exits.

   -h,  --help
     Displays usage information and exits.


   Reports the current volume of a PulseAudio sink, in an asynchronous way
   (without polling)

License

Copyright (c) 2017 Alicia Boya García

MIT License.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.