Optionally format distance as meters/kilometers or feet/miles based on overal distance. For metric, distance will be displayed as:
0-999m: display meters
1000-9999m: display as kilometers with 2 decimals (ie. 1.23K)
10000m and above: display as kilometers with 1 decimal (ie. 10.5K)
Similar for imperial units except that will display feet up to 1 mile (5280ft), miles with 2 decimals from 1-9.99 miles, and with 1 decimal over 10 miles.
Configured with `osd_dynamic_distance_units = OFF | ON`. If off (the default) then the behavior is unchanged and the distance will be only displayed in meters or feet depending on the units selection.
There are currently no OSD font symbols for kilometers or miles so "K" and "M" are used at this time.
Allows reordering OSD post-flight statistics without affecting the storage bit position and requiring Configurator changes. Previously the display order was one and the same with the enabled flag bit position. Additionally this ordering was also used by the configurator. So if the ordering was changed then the user settings would become corrupted (different stats would be enabled/disabled). Also the Configurator had an internal representation that had to match the definition enumeration otherwise the flags returned when saving would also set the wrong bits.
Now the definition remains constant and unchanging. The bit positions for the enable flag will not be changed. A separate array defines the presentaion order of the permanent stats ID's.
Added the display order to MSP to allow the configurator to also present the stats in the same order displayed in the firmware.
fix indent , move unused
remove premature optimisation
Use prior code for osd element calc
unit test add crsf for scaleCrsfLq
unittest typo
rx 0-100
elements simplify osdElementLinkQuality refactor
share one 16 bit var
Will dynamically determine the number of active OSD stats lines that are being displayed (accounting for user selections and #define logic) and maximize the number of stats that can be displayed based on the current video format (13 for NTSC, 16 for PAL).
If the number of stats is equal to or greater than the available display lines, the heading will be suppressed and used instead for an extra stats line.
The entire stats page will be centered vertically based on the screen size determined by the video format.
Remove the giant `select` block that contained all the code to generate the elements and transition them to individual functions called only when the element is active. Simplifies the code and results in a performance improvement as it's not necessary to fall through the large `select` statement for every element that will be drawn. The individual functions and the element to function mapping are moved to a new `osd_elements.c` file.
Moved the OSD related code files to a new `osd/` directory.
Also pre-analyze the active elements and only process those that are active. This also saves processing as it's not necessary to loop through all 50 or so elements when only a couple are active.
Various other cleanup and removal of stale or unnecessary code.
In the default configuration the element drawing phase of the OSD task is reduced from ~51us to ~35us - resulting in about a 30% decrease in processing time.
