X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Ftheme.lua;h=bd22aa4a8d126cedbd271d7668f414a3b5e74fc1;hb=6d5032cb1f330b6767053c51a8d627ac5f7c00ec;hp=973e389d784f2c59e5345f458289e5dd23c0dd40;hpb=f3aa15a52accbc8184fdd617a3e14126cb6a3a20;p=nageru

diff --git a/nageru/theme.lua b/nageru/theme.lua
index 973e389..bd22aa4 100644
--- a/nageru/theme.lua
+++ b/nageru/theme.lua
@@ -36,11 +36,6 @@ local NO_TRANSITION = 0
 local ZOOM_TRANSITION = 1  -- Also for slides.
 local FADE_TRANSITION = 2
 
--- Last width/height/frame rate for each channel, if we have it.
--- Note that unlike the values we get from Nageru, the resolution is per
--- frame and not per field, since we deinterlace.
-local last_resolution = {}
-
 function make_sbs_input(scene)
 	return {
 		input = scene:add_input(),
@@ -115,92 +110,27 @@ local static_scene = Scene.new(16, 9)
 static_scene:add_input(static_image)  -- Note: Locks this input to images only.
 static_scene:finalize()
 
--- API ENTRY POINT
--- Returns the number of outputs in addition to the live (0) and preview (1).
--- Called only once, at the start of the program.
-function num_channels()
-	return 4
-end
+-- Set some global state.
+Nageru.set_num_channels(4)  -- Can only be called at the start of the program.
 
-function is_plain_signal(num)
-	return num == INPUT0_SIGNAL_NUM or num == INPUT1_SIGNAL_NUM
-end
+-- Set some global state. Unless marked otherwise, these can only be set once,
+-- at the start of the program.
+Nageru.set_num_channels(4)
 
--- 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)
-	local res = last_resolution[signal_num]
-	if (not res) or not res.is_connected then
-		return "disconnected"
-	end
-	if 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(res)
-	local nom = res.frame_rate_nom
-	local den = res.frame_rate_den
-	if nom % den == 0 then
-		return nom / den
-	else
-		return string.format("%.2f", nom / den)
-	end
-end
-
--- Helper function to write e.g. “720p60”.
-function get_channel_resolution_raw(res)
-	if res.interlaced then
-		return res.height .. "i" .. get_frame_rate(res)
-	else
-		return res.height .. "p" .. get_frame_rate(res)
-	end
-end
+-- Sets, for each channel, which signal it corresponds to (starting from 0).
+-- The information is used for whether right-click on the channel should bring up
+-- an input selector or not. Only call this for channels that actually correspond
+-- directly to a signal (ie., live inputs, not live (0) or preview (1)).
+Nageru.set_channel_signal(2, 0)
+Nageru.set_channel_signal(3, 1)
 
--- API ENTRY POINT
--- Returns the name for each additional channel (starting from 2).
--- Called at the start of the program, and then each frame for live
--- channels in case they change resolution.
-function channel_name(channel)
-	local signal_num = channel - 2
-	if is_plain_signal(signal_num) then
-		return "Input " .. (signal_num + 1) .. " (" .. get_channel_resolution(signal_num) .. ")"
-	elseif signal_num == SBS_SIGNAL_NUM then
-		return "Side-by-side"
-	elseif signal_num == STATIC_SIGNAL_NUM then
-		return "Static picture"
-	end
-end
+-- Set whether a given channel supports setting white balance. (Default is false.)
+Nageru.set_supports_wb(2, true)
+Nageru.set_supports_wb(3, true)
 
--- API ENTRY POINT
--- Returns, given a channel number, which signal it corresponds to (starting from 0).
--- Should return -1 if the channel does not correspond to a simple signal
--- (one connected to a capture card, or a video input). The information is used for
--- whether right-click on the channel should bring up a context menu or not,
--- typically containing an input selector, resolution menu etc.
---
--- Called once for each channel, at the start of the program.
--- Will never be called for live (0) or preview (1).
-function channel_signal(channel)
-	if channel == 2 then
-		return 0
-	elseif channel == 3 then
-		return 1
-	else
-		return -1
-	end
-end
+-- These can be set at any time.
+Nageru.set_channel_name(SBS_SIGNAL_NUM + 2, "Side-by-side")
+Nageru.set_channel_name(STATIC_SIGNAL_NUM + 2, "Static picture")
 
 -- API ENTRY POINT
 -- Called every frame. Returns the color (if any) to paint around the given
@@ -224,6 +154,10 @@ function channel_color(channel)
 	return "transparent"
 end
 
+function is_plain_signal(num)
+	return num == INPUT0_SIGNAL_NUM or num == INPUT1_SIGNAL_NUM
+end
+
 function channel_involved_in(channel, signal_num)
 	if is_plain_signal(signal_num) then
 		return channel == (signal_num + 2)
@@ -237,13 +171,6 @@ function channel_involved_in(channel, signal_num)
 	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.
-function supports_set_wb(channel)
-	return is_plain_signal(channel - 2)
-end
-
 -- API ENTRY POINT
 -- Gets called with a new gray point when the white balance is changing.
 -- The color is in linear light (not sRGB gamma).
@@ -450,8 +377,10 @@ function get_scene(num, t, width, height, signals)
 		end
 
 		input_resolution[signal_num] = res
+
+		local text_res = signals:get_human_readable_resolution(signal_num)
+		Nageru.set_channel_name(signal_num + 2, "Input " .. (signal_num + 1) .. " (" .. text_res .. ")")
 	end
-	last_resolution = input_resolution
 
 	if num == 0 then  -- Live.
 		finish_transitions(t)