Show the current resolution next to the inputs.

[nageru] / theme.lua

diff --git a/theme.lua b/theme.lua
index ee7283882fbfc3e5ca237d519510897c2334aa96..1f00d52165aa4b7d5be0c042bd8028da734f4e5f 100644 (file)
--- a/theme.lua
+++ b/theme.lua
@@ -31,6 +31,9 @@ local STATIC_SIGNAL_NUM = 3
 -- to the next.
 local FADE_SIGNAL_NUM = 4
 
+-- Last width/height/resolution for each channel, if we have it.
+local last_resolution = {}
+
 -- Utility function to help creating many similar chains that can differ
 -- in a free set of chosen parameters.
 function make_cartesian_product(parms, callback)
@@ -244,13 +247,30 @@ function num_channels()
        return 4
 end
 
+-- Helper function to write e.g. “720p”.
+function get_channel_resolution(signal_num)
+       if last_resolution[signal_num] then
+               if last_resolution[signal_num].height == 0 or
+                  last_resolution[signal_num].height == 525 then
+                       return "no signal"
+               elseif last_resolution[signal_num].interlaced then
+                       return (last_resolution[signal_num].height * 2) .. "i"
+               else
+                       return last_resolution[signal_num].height .. "p"
+               end
+       else
+               return "no signal"
+       end
+end
+
 -- Returns the name for each additional channel (starting from 2).
--- Called only once for each channel, at the start of the program.
+-- Called at the start of the program, and then each frame for live
+-- channels in case they change resolution.
 function channel_name(channel)
        if channel == 2 then
-               return "Input 1"
+               return "Input 1 (" .. get_channel_resolution(0) .. ")"
        elseif channel == 3 then
-               return "Input 2"
+               return "Input 2 (" .. get_channel_resolution(1) .. ")"
        elseif channel == 4 then
                return "Side-by-side"
        elseif channel == 5 then
@@ -430,6 +450,14 @@ end
 -- NOTE: The chain returned must be finalized with the Y'CbCr flag
 -- if and only if num==0.
 function get_chain(num, t, width, height, signals)
+       for signal_num=0,1 do
+               last_resolution[signal_num] = {
+                       width = signals:get_width(signal_num),
+                       height = signals:get_height(signal_num),
+                       interlaced = signals:get_interlaced(signal_num)
+               }
+       end
+
        if num == 0 then  -- Live.
                if live_signal_num == INPUT0_SIGNAL_NUM or live_signal_num == INPUT1_SIGNAL_NUM then  -- Plain input.
                        local input_type = get_input_type(signals, live_signal_num)