video/edid/edid_sort.c: Add logic to sort video modes by how close they are to the preferred mode. This is part of the logic to pick the best possible video mode.

2026-06-06 08:36:24 +08:00 · 2019-07-07 17:59:51 -06:00
parent 69e215e083
commit 01ca208990
5 changed files with 234 additions and 5 deletions
@@ -601,10 +601,13 @@ int edid_parse(FAR const uint8_t *data, FAR struct edid_info_s *edid);
 * Name:  edid_sort_modes
 *
 * Description:
- *   Sort video modes by refresh rate, aspect ratio (*), then resolution.
+ *   Sort video modes by refresh rate, aspect ratio, then resolution.
 *   Preferred mode or largest mode is first in the list and other modes
 *   are sorted on closest match to that mode.
 *
+ *   Note that the aspect ratio calculation treats "close" aspect ratios
+ *   (within 12.5%) as the same for this purpose.
+ *
 * Input Parameters:
 *   modes     - A reference to the first entry in a list of video modes
 *   preferred - A pointer to the pointer to the preferred mode in the list