2020-09-03 01:48:47 +02:00
|
|
|
# Megapixels
|
|
|
|
|
|
|
|
|
|
A GTK3 camera application that knows how to deal with the media request api
|
2020-09-08 15:30:01 +02:00
|
|
|
|
|
|
|
|
## Building
|
|
|
|
|
|
|
|
|
|
```shell-session
|
|
|
|
|
$ meson build
|
|
|
|
|
$ cd build
|
|
|
|
|
$ ninja
|
|
|
|
|
$ sudo ninja install
|
|
|
|
|
```
|
2020-09-18 15:21:03 +02:00
|
|
|
|
|
|
|
|
# Developing
|
|
|
|
|
|
|
|
|
|
See the mailing list and issue tracker on https://sr.ht/~martijnbraam/Megapixels/
|
2020-09-22 01:14:15 +02:00
|
|
|
|
|
|
|
|
# Config
|
|
|
|
|
|
|
|
|
|
Megapixels checks multiple locations for it's configuration file and uses the first one it finds.
|
|
|
|
|
As first step it will get the first compatible name in the device tree, in the case of a PinePhone
|
|
|
|
|
this might be "pine64,pinephone-1.2". Then that dtname will be used as the filename in the search
|
|
|
|
|
path in this order:
|
|
|
|
|
|
|
|
|
|
* $XDG_CONFIG_DIR/megapixels/config/$dtname.ini
|
|
|
|
|
* ~/.config/megapixels/config/$dtname.ini
|
|
|
|
|
* /etc/megapixels/config/$dtname.ini
|
|
|
|
|
* /usr/share/megapixels/config/$dtname.ini
|
|
|
|
|
|
|
|
|
|
The files in /usr/share/megapixels should be the config files distributed in this repository. The other
|
|
|
|
|
locations allow the user or distribution to override config.
|
|
|
|
|
|
|
|
|
|
## Config file format
|
|
|
|
|
|
|
|
|
|
Configuration files are INI format files.
|
|
|
|
|
|
|
|
|
|
### [device]
|
|
|
|
|
|
|
|
|
|
This provides global info, currently only the `csi` key exists, telling megapixels which device in the
|
|
|
|
|
media-ctl tree is the interface to the kernel. This should provide the /dev/video* node.
|
|
|
|
|
|
|
|
|
|
### [rear] and [front]
|
|
|
|
|
|
|
|
|
|
These are the sections describing the sensors.
|
|
|
|
|
|
|
|
|
|
* `driver=ov5640` the name of the media node that provides the sensor and it's /dev/v4l-subdev* node.
|
|
|
|
|
* `width=640` and `height=480` the resolution to use for the sensor
|
|
|
|
|
* `rate=15` the refresh rate in fps to use for the sensor
|
|
|
|
|
* `fmt=BGGR8` sets the pixel and bus formats used when capturing from the sensor, only BGGR8 is fully supported
|
|
|
|
|
* `rotate=90` the rotation angle to make the sensor match the screen
|
