local live_signal_num = 0
local preview_signal_num = 1
+-- Valid values for live_signal_num and preview_signal_num.
+local INPUT0_SIGNAL_NUM = 0
+local INPUT1_SIGNAL_NUM = 1
+local SBS_SIGNAL_NUM = 2
+
+-- A “fake” signal number that signifies that we are fading from one input
+-- to the next.
+local FADE_SIGNAL_NUM = 3
+
-- The main live chain.
function make_sbs_chain(hq)
local chain = EffectChain.new(16, 9)
return "Input 1"
elseif channel == 3 then
return "Input 2"
- else
+ elseif channel == 4 then
return "Side-by-side"
end
end
end
function finish_transitions(t)
- -- If live is 2 (SBS) but de-facto single, make it so.
- if live_signal_num == 2 and t >= transition_end and zoom_dst == 1.0 then
+ -- If live is SBS but de-facto single, make it so.
+ if live_signal_num == SBS_SIGNAL_NUM and t >= transition_end and zoom_dst == 1.0 then
live_signal_num = zoom_poi
end
- -- If live is 3 (fade) but de-facto single, make it so.
- if live_signal_num == 3 and t >= transition_end and fade_dst == 1.0 then
- live_signal_num = 0
+ -- If live is fade but de-facto single, make it so.
+ if live_signal_num == FADE_SIGNAL_NUM and t >= transition_end and fade_dst == 1.0 then
+ live_signal_num = INPUT0_SIGNAL_NUM
end
- if live_signal_num == 3 and t >= transition_end and fade_dst == 0.0 then
- live_signal_num = 1
+ if live_signal_num == FADE_SIGNAL_NUM and t >= transition_end and fade_dst == 0.0 then
+ live_signal_num = INPUT1_SIGNAL_NUM
end
end
return {}
end
- if live_signal_num == 2 and t >= transition_start and t <= transition_end then
+ if live_signal_num == SBS_SIGNAL_NUM and t >= transition_start and t <= transition_end then
-- Zoom in progress.
return {"Cut"}
end
- if (live_signal_num == 0 and preview_signal_num == 1) or
- (live_signal_num == 1 and preview_signal_num == 0) then
+ if (live_signal_num == INPUT0_SIGNAL_NUM and preview_signal_num == INPUT1_SIGNAL_NUM) or
+ (live_signal_num == INPUT1_SIGNAL_NUM and preview_signal_num == INPUT0_SIGNAL_NUM) then
return {"Cut", "", "Fade"}
end
-- Various zooms.
- if live_signal_num == 2 and (preview_signal_num == 0 or preview_signal_num == 1) then
+ if live_signal_num == SBS_SIGNAL_NUM and
+ (preview_signal_num == INPUT0_SIGNAL_NUM or preview_signal_num == INPUT1_SIGNAL_NUM) then
return {"Cut", "Zoom in"}
- elseif (live_signal_num == 0 or live_signal_num == 1) and preview_signal_num == 2 then
+ elseif (live_signal_num == INPUT0_SIGNAL_NUM or live_signal_num == INPUT1_SIGNAL_NUM) and
+ preview_signal_num == SBS_SIGNAL_NUM then
return {"Cut", "Zoom out"}
end
function transition_clicked(num, t)
if num == 0 then
-- Cut.
- if live_signal_num == 3 then
+ if live_signal_num == FADE_SIGNAL_NUM then
-- Ongoing fade; finish it immediately.
finish_transitions(transition_end)
end
live_signal_num = preview_signal_num
preview_signal_num = temp
- if live_signal_num == 2 then
+ if live_signal_num == SBS_SIGNAL_NUM then
-- Just cut to SBS, we need to reset any zooms.
zoom_src = 1.0
zoom_dst = 0.0
return
end
- if (live_signal_num == 0 and preview_signal_num == 1) or
- (live_signal_num == 1 and preview_signal_num == 0) then
+ if (live_signal_num == INPUT0_SIGNAL_NUM and preview_signal_num == INPUT1_SIGNAL_NUM) or
+ (live_signal_num == INPUT1_SIGNAL_NUM and preview_signal_num == INPUT0_SIGNAL_NUM) then
-- We can't zoom between these. Just make a cut.
io.write("Cutting from " .. live_signal_num .. " to " .. live_signal_num .. "\n")
local temp = live_signal_num
return
end
- if live_signal_num == 2 and (preview_signal_num == 0 or preview_signal_num == 1) then
+ if live_signal_num == SBS_SIGNAL_NUM and
+ (preview_signal_num == INPUT0_SIGNAL_NUM or preview_signal_num == INPUT1_SIGNAL_NUM) then
-- Zoom in from SBS to single.
transition_start = t
transition_end = t + 1.0
zoom_src = 0.0
zoom_dst = 1.0
zoom_poi = preview_signal_num
- preview_signal_num = 2
- elseif (live_signal_num == 0 or live_signal_num == 1) and preview_signal_num == 2 then
+ preview_signal_num = SBS_SIGNAL_NUM
+ elseif (live_signal_num == INPUT0_SIGNAL_NUM or live_signal_num == INPUT1_SIGNAL_NUM) and
+ preview_signal_num == SBS_SIGNAL_NUM then
-- Zoom out from single to SBS.
transition_start = t
transition_end = t + 1.0
zoom_dst = 0.0
preview_signal_num = live_signal_num
zoom_poi = live_signal_num
- live_signal_num = 2
+ live_signal_num = SBS_SIGNAL_NUM
end
elseif num == 2 then
finish_transitions(t)
-- Fade.
- if live_signal_num == 0 and preview_signal_num == 1 then
+ if live_signal_num == INPUT0_SIGNAL_NUM and preview_signal_num == INPUT1_SIGNAL_NUM then
transition_start = t
transition_end = t + 1.0
fade_src = 1.0
fade_dst = 0.0
preview_signal_num = 0
- live_signal_num = 3
- elseif live_signal_num == 1 and preview_signal_num == 0 then
+ live_signal_num = FADE_SIGNAL_NUM
+ elseif live_signal_num == INPUT1_SIGNAL_NUM and preview_signal_num == INPUT0_SIGNAL_NUM then
transition_start = t
transition_end = t + 1.0
fade_src = 0.0
fade_dst = 1.0
preview_signal_num = 1
- live_signal_num = 3
+ live_signal_num = FADE_SIGNAL_NUM
else
-- Fades involving SBS are ignored (we have no chain for it).
end
-- if and only if num==0.
function get_chain(num, t, width, height)
if num == 0 then -- Live.
- if live_signal_num == 0 or live_signal_num == 1 then -- Plain inputs.
+ if live_signal_num == INPUT0_SIGNAL_NUM then -- Plain input.
prepare = function()
- simple_chain_hq_input:connect_signal(live_signal_num)
- if live_signal_num == 0 then
- set_neutral_color(simple_chain_hq_wb_effect, input0_neutral_color)
- else
- set_neutral_color(simple_chain_hq_wb_effect, input1_neutral_color)
- end
+ simple_chain_hq_input:connect_signal(INPUT0_SIGNAL_NUM)
+ set_neutral_color(simple_chain_hq_wb_effect, input0_neutral_color)
+ end
+ return simple_chain_hq, prepare
+ elseif live_signal_num == INPUT1_SIGNAL_NUM then -- Plain input.
+ prepare = function()
+ simple_chain_hq_input:connect_signal(INPUT1_SIGNAL_NUM)
+ set_neutral_color(simple_chain_hq_wb_effect, input1_neutral_color)
end
return simple_chain_hq, prepare
- elseif live_signal_num == 3 then -- Fade.
+ elseif live_signal_num == FADE_SIGNAL_NUM then -- Fade.
prepare = function()
fade_chain_hq_input0:connect_signal(0)
set_neutral_color(fade_chain_hq_wb0_effect, input0_neutral_color)
return fade_chain_hq, prepare
end
- -- SBS code (live_signal_num == 2).
+ -- SBS code (live_signal_num == SBS_SIGNAL_NUM).
if t > transition_end and zoom_dst == 1.0 then
-- Special case: Show only the single image on screen.
prepare = function()
- simple_chain_hq_input:connect_signal(0)
+ simple_chain_hq_input:connect_signal(INPUT0_SIGNAL_NUM)
set_neutral_color(simple_chain_hq_wb_effect, input0_neutral_color)
end
return simple_chain_hq, prepare
if num == 1 then -- Preview.
num = preview_signal_num + 2
end
- if num == 2 then
+ if num == INPUT0_SIGNAL_NUM + 2 then
prepare = function()
simple_chain_lq_input:connect_signal(0)
set_neutral_color(simple_chain_lq_wb_effect, input0_neutral_color)
end
return simple_chain_lq, prepare
end
- if num == 3 then
+ if num == INPUT1_SIGNAL_NUM + 2 then
prepare = function()
simple_chain_lq_input:connect_signal(1)
set_neutral_color(simple_chain_lq_wb_effect, input1_neutral_color)
end
return simple_chain_lq, prepare
end
- if num == 4 then
+ if num == SBS_SIGNAL_NUM + 2 then
prepare = function()
prepare_sbs_chain(main_chain_lq, 0.0, width, height)
end
projects / nageru / commitdiff