local SBS_SIGNAL_NUM = 2
local STATIC_SIGNAL_NUM = 3
--- “fake” signal numbers that signifies that we are fading from one input
+-- “fake” signal number that signifies that we are fading from one input
-- to the next.
-local FADE_VTV_SIGNAL_NUM = 4 -- Video to/from video.
-local FADE_VTP_SIGNAL_NUM = 5 -- Video to/from static picture.
+local FADE_SIGNAL_NUM = 4
-- The main live chain.
function make_sbs_chain(hq)
local main_chain_hq = make_sbs_chain(true)
local main_chain_lq = make_sbs_chain(false)
--- A chain to fade between two inputs (live chain only)
-local fade_vtv_chain_hq = EffectChain.new(16, 9)
-local fade_vtv_chain_hq_input0 = fade_vtv_chain_hq:add_live_input(true)
-local fade_vtv_chain_hq_wb0_effect = fade_vtv_chain_hq:add_effect(WhiteBalanceEffect.new())
-local fade_vtv_chain_hq_input1 = fade_vtv_chain_hq:add_live_input(true)
-local fade_vtv_chain_hq_wb1_effect = fade_vtv_chain_hq:add_effect(WhiteBalanceEffect.new())
-fade_vtv_chain_hq_input0:connect_signal(0)
-fade_vtv_chain_hq_input1:connect_signal(1)
-local fade_vtv_chain_mix_effect = fade_vtv_chain_hq:add_effect(MixEffect.new(), fade_vtv_chain_hq_wb0_effect, fade_vtv_chain_hq_wb1_effect)
-fade_vtv_chain_hq:finalize(true)
-
--- A chain to fade between an inputs and a picture (live chain only)
-local fade_vtp_chain_hq = EffectChain.new(16, 9)
-local fade_vtp_chain_hq_input0 = fade_vtp_chain_hq:add_live_input(true)
-local fade_vtp_chain_hq_wb0_effect = fade_vtp_chain_hq:add_effect(WhiteBalanceEffect.new())
-local fade_vtp_chain_hq_input1 = fade_vtp_chain_hq:add_effect(ImageInput.new("bg.jpeg"))
-fade_vtp_chain_hq_input0:connect_signal(0)
-local fade_vtp_chain_mix_effect = fade_vtp_chain_hq:add_effect(MixEffect.new(), fade_vtp_chain_hq_wb0_effect, fade_vtp_chain_hq_input1)
-fade_vtp_chain_hq:finalize(true)
+-- A chain to fade between two inputs, of which either can be a picture
+-- or a live input. In practice only used live, but we still support the
+-- hq parameter.
+function make_fade_chain(input0_live, input1_live, hq)
+ local chain = EffectChain.new(16, 9)
+
+ local input0, wb0_effect, input0_last, input1, wb1_effect, input1_last
+
+ if input0_live then
+ input0 = chain:add_live_input(true)
+ wb0_effect = chain:add_effect(WhiteBalanceEffect.new())
+ input0:connect_signal(0)
+ input0_last = wb0_effect
+ else
+ input0 = chain:add_effect(ImageInput.new("bg.jpeg"))
+ input0_last = input0
+ end
+
+ if input1_live then
+ input1 = chain:add_live_input(true)
+ wb1_effect = chain:add_effect(WhiteBalanceEffect.new())
+ input1:connect_signal(1)
+ input1_last = wb1_effect
+ else
+ input1 = chain:add_effect(ImageInput.new("bg.jpeg"))
+ input1_last = input1
+ end
+
+ local mix_effect = chain:add_effect(MixEffect.new(), input0_last, input1_last)
+ chain:finalize(hq)
+
+ return {
+ chain = chain,
+ input0 = {
+ input = input0,
+ white_balance_effect = wb0_effect
+ },
+ input1 = {
+ input = input1,
+ white_balance_effect = wb1_effect
+ },
+ mix_effect = mix_effect
+ }
+end
+
+-- Chains to fade between two inputs, in various configurations.
+local fade_chains = {}
+for input0_type, input0_live in pairs({static = false, live = true}) do
+ fade_chains[input0_type] = {}
+ for input1_type, input1_live in pairs({static = false, live = true}) do
+ fade_chains[input0_type][input1_type] = {}
+ for _, hq in pairs({true, false}) do
+ fade_chains[input0_type][input1_type][hq] = make_fade_chain(input0_live, input1_live, hq)
+ end
+ end
+end
-- A chain to show a single input on screen (HQ version).
local simple_chain_hq = EffectChain.new(16, 9)
end
-- If live is fade but de-facto single, make it so.
- if (live_signal_num == FADE_VTV_SIGNAL_NUM or live_signal_num == FADE_VTP_SIGNAL_NUM) and t >= transition_end then
+ if live_signal_num == FADE_SIGNAL_NUM and t >= transition_end then
live_signal_num = fade_dst_signal
end
end
function transition_clicked(num, t)
if num == 0 then
-- Cut.
- if live_signal_num == FADE_VTV_SIGNAL_NUM or live_signal_num == FADE_VTP_SIGNAL_NUM then
+ if live_signal_num == FADE_SIGNAL_NUM then
-- Ongoing fade; finish it immediately.
finish_transitions(transition_end)
end
finish_transitions(t)
-- Fade.
- 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
- transition_start = t
- transition_end = t + 1.0
- fade_src_signal = live_signal_num
- fade_dst_signal = preview_signal_num
- preview_signal_num = live_signal_num
- live_signal_num = FADE_VTV_SIGNAL_NUM
- elseif ((live_signal_num == INPUT0_SIGNAL_NUM or live_signal_num == INPUT1_SIGNAL_NUM) and
- preview_signal_num == STATIC_SIGNAL_NUM) or
- ((preview_signal_num == INPUT0_SIGNAL_NUM or preview_signal_num == INPUT1_SIGNAL_NUM) and
- live_signal_num == STATIC_SIGNAL_NUM) then
+ if (live_signal_num ~= preview_signal_num) and
+ (live_signal_num == INPUT0_SIGNAL_NUM or
+ live_signal_num == INPUT1_SIGNAL_NUM or
+ live_signal_num == STATIC_SIGNAL_NUM) and
+ (preview_signal_num == INPUT0_SIGNAL_NUM or
+ preview_signal_num == INPUT1_SIGNAL_NUM or
+ preview_signal_num == STATIC_SIGNAL_NUM) then
transition_start = t
transition_end = t + 1.0
fade_src_signal = live_signal_num
fade_dst_signal = preview_signal_num
preview_signal_num = live_signal_num
- live_signal_num = FADE_VTP_SIGNAL_NUM
+ live_signal_num = FADE_SIGNAL_NUM
else
-- Fades involving SBS are ignored (we have no chain for it).
end
prepare = function()
end
return static_chain_hq, prepare
- elseif live_signal_num == FADE_VTV_SIGNAL_NUM then -- Fade video-to-video.
+ elseif live_signal_num == FADE_SIGNAL_NUM then -- Fade.
+ local input0_type = (fade_src_signal == STATIC_SIGNAL_NUM) and "static" or "live"
+ local input1_type = (fade_dst_signal == STATIC_SIGNAL_NUM) and "static" or "live"
+ local chain = fade_chains[input0_type][input1_type][true]
prepare = function()
- fade_vtv_chain_hq_input0:connect_signal(fade_src_signal)
- set_neutral_color_from_signal(fade_vtv_chain_hq_wb0_effect, fade_src_signal)
- fade_vtv_chain_hq_input1:connect_signal(fade_dst_signal)
- set_neutral_color_from_signal(fade_vtv_chain_hq_wb1_effect, fade_dst_signal)
+ if input0_type == "live" then
+ chain.input0.input:connect_signal(fade_src_signal)
+ set_neutral_color_from_signal(chain.input0.white_balance_effect, fade_src_signal)
+ end
+ if input1_type == "live" then
+ chain.input1.input:connect_signal(fade_dst_signal)
+ set_neutral_color_from_signal(chain.input1.white_balance_effect, fade_dst_signal)
+ end
local tt = calc_fade_progress(t, transition_start, transition_end)
- fade_vtv_chain_mix_effect:set_float("strength_first", 1.0 - tt)
- fade_vtv_chain_mix_effect:set_float("strength_second", tt)
- end
- return fade_vtv_chain_hq, prepare
- elseif live_signal_num == FADE_VTP_SIGNAL_NUM then -- Fade video-to-picture (or picture-to-video).
- prepare = function()
- local tt
- if fade_src_signal == STATIC_SIGNAL_NUM then
- fade_vtp_chain_hq_input0:connect_signal(fade_dst_signal)
- set_neutral_color_from_signal(fade_vtp_chain_hq_wb0_effect, fade_dst_signal)
- tt = 1.0 - calc_fade_progress(t, transition_start, transition_end)
- else
- fade_vtp_chain_hq_input0:connect_signal(fade_src_signal)
- set_neutral_color_from_signal(fade_vtp_chain_hq_wb0_effect, fade_src_signal)
- tt = calc_fade_progress(t, transition_start, transition_end)
- end
- fade_vtp_chain_mix_effect:set_float("strength_first", 1.0 - tt)
- fade_vtp_chain_mix_effect:set_float("strength_second", tt)
+ chain.mix_effect:set_float("strength_first", 1.0 - tt)
+ chain.mix_effect:set_float("strength_second", tt)
end
- return fade_vtp_chain_hq, prepare
+ return chain.chain, prepare
end
-- SBS code (live_signal_num == SBS_SIGNAL_NUM).
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