2023-02-16:
- fixed positioncontrol. made some misstakes in calculating the angle
  of the axsis vectors.
- changed: convert function is now only presend in videodef class.

2023-02-07:
- position control is now working. has still some glitches
  with negative Kp, Ki and Kd values. But in general it is working.
- fixed: set mode to POSCTL_MODE_OFF if an output error occured.

2022-12-07:
- dump files will continussly loop
- fixed: dumpfile is not setting the frame size to the videodev.conf_height
  and width variable

2022-12-06:
- saving and restoring windows position and size on exit and startup

2022-12-04:
- RAW8 format support for SVB camera, also fixed RGB24 format
- many bug fixes for RGB conversions
- DNG and SER file format fixes

2022-11-29:
- Crash on invalid dumpfile solved.
- closing and reopening of windows is working now.
- RGB16 debayer mode simple/bilinear can now be choosen in the settings menu

2022-11-26:
- adding histogram

2022-11-10:
- support for DNG file export

2022-11-09:
- added preliminary SER file implementations, writing seems to work also
  with timestamps; reading not yet tested
- adding save of videodump files for debugging purposes
- adding make target checkdumpfile to test and gain some basic information
  on videodumpfiles

2022-11-07:
- fixed: clear control grid after stoping a recording
- fixed: serval gtk warnings fixed. Checked if scale has a valid
  min/max setting.
- adding:  nother 24bit pixel format BGR24

2022-11-03:
- fixed: grabbing frame from SVBONY cam is not blocking other threads.
- fixed: converting input pixelformat correctly. Finshed implementing
  pixelformat V4L2_PIX_FMT_RGB24 and V4L2_PIX_FMT_BGR24

2022-10-30:
- fixing many bugs check change log.
  controls are back working, automatic format detection.
  adding alot FIXMEs to the code.

2021-11-17:
- adding basic support for SBVcams like SV-305


2021-11-15:
- JSON read changed, space was interpreted as '\n'
- adding support for multiple drivers

2021-10-25:
- adding support for different resolution and pixelformat
- adding position/movement vector in the top left corner
- saving/loading the default config is working now
- saving and recalling presetbuttons are working
- some code cleanup

2021-10-10:
- basic object detection and image filter added
- save image works

2021-09-21:
- scaling the video to screensize works.
- controls can be set via gui

2021-09-08:
- grab video from old type of cameras is working

2021-09-15:
- grab video from cammeras only supporting mjpeg stream



