stats.lua: add file_tag_max_length option

To filter out overlength tags (such as long comments and lyrics),
add file_tag_max_length option so that tags longer than this length
are not displayed.

DOCS/man/stats.rst

@@ -85,6 +85,11 @@ Configurable Options
  respective duration. This can result in overlapping text when multiple
  scripts decide to print text at the same time.
 
+``file_tag_max_length``
+ Default: 128
+
+ Only show file tags shorter than this length, in bytes.
+
 ``term_width_limit``
  Default: -1
 

player/lua/stats.lua

@@ -29,7 +29,8 @@ local o = {
  persistent_overlay = false, -- whether the stats can be overwritten by other output
  print_perfdata_passes = false, -- when true, print the full information about all passes
  filter_params_max_length = 100, -- a filter list longer than this many characters will be shown one filter per line instead
- show_frame_info = false, -- whether to show the current frame info
+ file_tag_max_length = 128, -- only show file tags shorter than this length in bytes
+ show_frame_info = false, -- whether to show the current frame info
  term_width_limit = -1, -- overwrites the terminal width
  term_height_limit = -1, -- overwrites the terminal height
  debug = false,
@@ -613,7 +614,7 @@ local function add_file(s)
 
  local tags = mp.get_property_native("display-tags")
  for _, tag in pairs(tags) do
- if tag ~= "Title" then
+ if tag ~= "Title" and mp.get_property_osd("metadata/" .. tag):len() < o.file_tag_max_length then
  append_property(s, "metadata/" .. tag, {prefix=string.gsub(tag, "_", " ") .. ":"})
  end
  end