transition_src_signal = 0,
transition_dst_signal = 0,
- neutral_colors = {
- {0.5, 0.5, 0.5}, -- Input 0.
- {0.5, 0.5, 0.5} -- Input 1.
- },
-
live_signal_num = 0,
preview_signal_num = 1
}
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(),
+ input = scene:add_input(0), -- Live inputs only.
resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new()}),
- wb_effect = scene:add_effect(WhiteBalanceEffect.new()),
+ wb_effect = scene:add_auto_white_balance(),
padding_effect = scene:add_effect(IntegralPaddingEffect.new())
}
end
return {
input = scene:add_input(),
resample_effect = scene:add_optional_effect(ResampleEffect.new()), -- Activated if scaling.
- wb_effect = scene:add_optional_effect(WhiteBalanceEffect.new()) -- Activated for video inputs.
+ wb_effect = scene:add_auto_white_balance() -- Activated for video inputs.
}
end
scene = scene,
input = scene:add_input(),
resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new(), IdentityEffect.new()}),
- wb_effect = scene:add_effect(WhiteBalanceEffect.new())
+ wb_effect = scene:add_auto_white_balance()
}
scene:finalize()
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
-
-function is_plain_signal(num)
- return num == INPUT0_SIGNAL_NUM or num == INPUT1_SIGNAL_NUM
-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)
- 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
+-- 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. “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
+-- 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)
--- 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
+-- 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 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
-
--- 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
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)
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).
-function set_wb(channel, red, green, blue)
- if is_plain_signal(channel - 2) then
- state.neutral_colors[channel - 2 + 1] = { red, green, blue }
- end
-end
-
function finish_transitions(t)
if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
state.live_signal_num = state.transition_dst_signal
else
input.input:display(signal_num)
input.wb_effect:enable()
- set_neutral_color(input.wb_effect, state.neutral_colors[signal_num - INPUT0_SIGNAL_NUM + 1])
if (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height) then
input.resample_effect:enable()
else
simple_scene.resample_effect:disable() -- No scaling.
end
- set_neutral_color_from_signal(state, simple_scene.wb_effect, signal_num)
end
-- API ENTRY POINT
--
-- <signals> is basically an exposed InputState, which you can use to
-- query for information about the signals at the point of the current
--- frame. In particular, you can call get_width() and get_height()
+-- frame. In particular, you can call get_frame_width() and get_frame_height()
-- for any signal number, and use that to e.g. assist in scene selection.
+-- (You can also use get_width() and get_height(), which return the
+-- _field_ size. This has half the height for interlaced signals.)
--
-- You should return scene to use, after having set any parameters you
-- want to set (through set_int() etc.). The parameters will be snapshot
local input_resolution = {}
for signal_num=0,1 do
local res = {
- width = signals:get_width(signal_num),
- height = signals:get_height(signal_num),
- interlaced = signals:get_interlaced(signal_num),
- is_connected = signals:get_is_connected(signal_num),
- has_signal = signals:get_has_signal(signal_num),
- frame_rate_nom = signals:get_frame_rate_nom(signal_num),
- frame_rate_den = signals:get_frame_rate_den(signal_num)
+ width = signals:get_frame_width(signal_num),
+ height = signals:get_frame_height(signal_num),
}
-
- if res.interlaced then
- -- Convert height from frame height to field height.
- -- (Needed for e.g. place_rectangle.)
- res.height = res.height * 2
-
- -- Show field rate instead of frame rate; really for cosmetics only
- -- (and actually contrary to EBU recommendations, although in line
- -- with typical user expectations).
- res.frame_rate_nom = res.frame_rate_nom * 2
- 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)
end
function prepare_sbs_scene(state, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution, hq)
- set_neutral_color(sbs_scene.input0.wb_effect, state.neutral_colors[1])
- set_neutral_color(sbs_scene.input1.wb_effect, state.neutral_colors[2])
-
-- First input is positioned (16,48) from top-left.
-- Second input is positioned (16,48) from the bottom-right.
local pos0 = pos_from_top_left(16, 48, 848, 477, screen_width, screen_height)
place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
end
-function set_neutral_color(effect, color)
- effect:set_vec3("neutral_color", color[1], color[2], color[3])
-end
-
-function set_neutral_color_from_signal(state, effect, signal)
- if is_plain_signal(signal) then
- set_neutral_color(effect, state.neutral_colors[signal - INPUT0_SIGNAL_NUM + 1])
- end
-end
-
function calc_zoom_progress(state, t)
if t < state.transition_start then
return 0.0
projects / nageru / blobdiff