X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=theme.lua;h=bbc086a4e86f478dde7c2b66eabe8f64e78a0aee;hb=f006b5b162841dbc764fb620025b87a3272ac79a;hp=e8adb6cde8390d8e7f13c80e25899ef23fda29df;hpb=d1d58131d2f65f7bf985920d2ad46f5598550d99;p=nageru

diff --git a/theme.lua b/theme.lua
index e8adb6c..bbc086a 100644
--- a/theme.lua
+++ b/theme.lua
@@ -261,10 +261,29 @@ function num_channels()
 	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
@@ -273,17 +292,11 @@ function get_frame_rate(signal_num)
 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
 
@@ -320,6 +333,41 @@ function channel_signal(channel)
 	end
 end
 
+-- API ENTRY POINT
+-- Called every frame. Returns the color (if any) to paint around the given
+-- channel. Returns a CSS color (typically to mark live and preview signals);
+-- "transparent" is allowed.
+-- Will never be called for live (0) or preview (1).
+function channel_color(channel)
+	if channel_involved_in(channel, live_signal_num) then
+		return "#f00"
+	end
+	if channel_involved_in(channel, preview_signal_num) then
+		return "#0f0"
+	end
+	return "transparent"
+end
+
+function channel_involved_in(channel, signal_num)
+	if signal_num == INPUT0_SIGNAL_NUM then
+		return channel == 2
+	end
+	if signal_num == INPUT1_SIGNAL_NUM then
+		return channel == 3
+	end
+	if signal_num == SBS_SIGNAL_NUM then
+		return (channel == 2 or channel == 3)
+	end
+	if signal_num == STATIC_SIGNAL_NUM then
+		return (channel == 5)
+	end
+	if signal_num == FADE_SIGNAL_NUM then
+		return (channel_involved_in(channel, fade_src_signal) or
+		        channel_involved_in(channel, fade_dst_signal))
+	end
+	return false
+end
+
 -- API ENTRY POINT
 -- Returns if a given channel supports setting white balance (starting from 2).
 -- Called only once for each channel, at the start of the program.
@@ -387,8 +435,7 @@ function get_transitions(t)
 end
 
 -- API ENTRY POINT
--- Called when the user clicks a transition button. For our case,
--- we only do cuts, so we ignore the parameters; just switch live and preview.
+-- Called when the user clicks a transition button.
 function transition_clicked(num, t)
 	if num == 0 then
 		-- Cut.