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
}
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_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_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_white_balance()
}
scene:finalize()
static_scene:add_input(static_image) -- Note: Locks this input to images only.
static_scene:finalize()
--- Set some global state.
-Nageru.set_num_channels(4) -- Can only be called at the start of the program.
-
-- Set some global state. Unless marked otherwise, these can only be set once,
-- at the start of the program.
Nageru.set_num_channels(4)
return false
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
-- the output, although you can ignore them if you don't need them
-- (they're useful if you want to e.g. know what to resample by).
--
--- <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()
--- for any signal number, and use that to e.g. assist in scene selection.
+-- <signals> is an object which you can query for information
+-- about the signals at the point of the current frame. In particular,
+-- you can call get_frame_width() and get_frame_height() for any
+-- signal number, and use that to e.g. see if you wish to enable
+-- a scaler or not. (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)
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