- Add displayWriteFontCharacter() for font writing, removing all max7456
specific code.
- Add displayIsReady() for asynchronous display initialization
- Add displayBeginTransaction()/displayCommitTransaction() for display
transactions, which allow performing complex drawing operations without
flickering
- Add displayGetCanvas(), which retrieves the canvas associated with a
display (if it has it)
- Add canvas implementation for pixel based access for a display
- Add FrSkyOSD driver and displayPort driver
- Enable FrSkyOSD driver for targets with flash > 256
- Rename max7456_symbols.h to osd_symbols.h
Adds `osd_logo_on_arming_duration` which is configured in 0.1s intervals ranging from 5 to 50 (0.5s to 5.0s). The default is 5 (0.5s) to be consistent with the previous "ARMED" splash screen.
Adds `osd_logo_on_arming` setting with values `OFF, ON, FIRST_ARMING` (defaults to `OFF`). Optionally displays the OSD splash logo durin the "ARMING" message.
Significantly reduces the time the OSD task spends drawing elements that are completely or mostly static. The larger the element the more time savings are realized. Currently implemented support for:
- Crosshairs
- Artificial Horizon Sidebars
- Craft name
- Display name
- Stick overlay
Since the static portions are only rendered once, the static elements add no processing time to the OSD task. As an example, enabling the above elements prior to these changes results in a total rendering time of 47us. After the enhancements they take only 6us (basically the rendering phase minimum overhead). So effectively 41us are removed from the OSD task.
Opens the possibility to add large mostly static elements with no additional overhead. An example would be a camera framing element that might draw a "box" around most of the screen. Previously this would add significant processing overhead to the OSD task, but now it will have no impact.
Checks various features, modes, and OSD elements to determine if ACC is needed. Generates an arming disabled warning if ACC calibration has never been completed.
Adds `osd_distance_alarm` (defaulting to 0 for OFF) which behaves similarly to `osd_alt_alarm`. Causes the OSD distance to home element to blink if the alarm setting is exceeded.
Also added to the CMS menu for consistency with the altitude alarm.
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.
