return 4
end
+-- Helper function to write e.g. “720p60”. The difference between this
+-- and get_channel_resolution_raw() is that this one also can say that
+-- there's no signal.
+function get_channel_resolution(signal_num)
+ res = last_resolution[signal_num]
+ if (not res) or res.height <= 0 then
+ return "no signal"
+ end
+ if not res.has_signal then
+ if res.height == 525 then
+ -- Special mode for the USB3 cards.
+ return "no signal"
+ end
+ return get_channel_resolution_raw(res) .. ", no signal"
+ else
+ return get_channel_resolution_raw(res)
+ end
+end
+
-- Helper function to write e.g. “60” or “59.94”.
-function get_frame_rate(signal_num)
- local nom = last_resolution[signal_num].frame_rate_nom
- local den = last_resolution[signal_num].frame_rate_den
+function get_frame_rate(res)
+ local nom = res.frame_rate_nom
+ local den = res.frame_rate_den
if nom % den == 0 then
return nom / den
else
end
-- Helper function to write e.g. “720p60”.
-function get_channel_resolution(signal_num)
- if last_resolution[signal_num] then
- if not last_resolution[signal_num].has_signal then
- return "no signal"
- elseif last_resolution[signal_num].interlaced then
- return last_resolution[signal_num].height .. "i" .. get_frame_rate(signal_num)
- else
- return last_resolution[signal_num].height .. "p" .. get_frame_rate(signal_num)
- end
+function get_channel_resolution_raw(res)
+ if res.interlaced then
+ return res.height .. "i" .. get_frame_rate(res)
else
- return "no signal"
+ return res.height .. "p" .. get_frame_rate(res)
end
end