vol_control.py and vol_overlay.py are simply programs designed to be run behind the scenes to intercept the media keys (Vol up/down and mute) and control the master Alsa volume level
Basic keyboard controls and volume control
Same as vol_control.py but with an added volume bar overlay
The following dependencies are required for vol_control.py
sudo install python-alsaaudio
sudo pip install keyboard
If you want to run vol_overlay.py the following additional dependencies are also required
sudo apt-get install python-opengl
There are some basic settings that can be configured to change the behaviour and appearance to suit your needs.
| Setting | Behavior |
|---|---|
| CARD | Alsa card index you wish to control. Default = 0 |
| Setting | Behavior |
|---|---|
| OMX_LAYER | Layer to render overlay |
| HIDE_DELAY | Number of seconds to show overlay for after changing volume |
| BACKGROUND_COLOR | Color of background image |
| BACKGROUNDBAR_COLOR | Colour of inactive volume bar |
| BAR_COLOR | Color of active volume bar |
Additionally, the following images are used and can be changed as required. All images must be saved as 32-bit pngs
| Image | Usage |
|---|---|
| background.png | Background shading |
| bar.png | Active and inactive volume bar shading |
| speaker.png | Unmuted image |
| muted.png | Muted image |
Due to globally monitor keyboard input without X11, both vol_control and vol_overlay must be run as root (See https://pypi.python.org/pypi/keyboard/ for more details)
sudo python vol_control.py
or
sudo python vol_overlay.py
Icons from http://www.softicons.com/system-icons/crystal-project-icons-by-everaldo-coelho