-- to the next.
local FADE_SIGNAL_NUM = 4
+-- Utility function to help creating many similar chains that can differ
+-- in a free set of chosen parameters.
+function make_cartesian_product(parms, callback)
+ return make_cartesian_product_internal(parms, callback, 1, {})
+end
+
+function make_cartesian_product_internal(parms, callback, index, args)
+ if index > #parms then
+ return callback(unpack(args))
+ end
+ local ret = {}
+ for _, value in ipairs(parms[index]) do
+ args[index] = value
+ ret[value] = make_cartesian_product_internal(parms, callback, index + 1, args)
+ end
+ return ret
+end
+
function make_sbs_input(chain, signal, deint, hq)
local input = chain:add_live_input(not deint, deint) -- Override bounce only if not deinterlacing.
input:connect_signal(signal)
end
-- Make all possible combinations of side-by-side chains.
-local sbs_chains = {}
-for input0_type, input0_deint in pairs({live = false, livedeint = true}) do
- sbs_chains[input0_type] = {}
- for input1_type, input1_deint in pairs({live = false, livedeint = true}) do
- sbs_chains[input0_type][input1_type] = {}
- for _, hq in pairs({true, false}) do
- sbs_chains[input0_type][input1_type][hq] =
- make_sbs_chain(input0_deint, input1_deint, hq)
- end
+local sbs_chains = make_cartesian_product({
+ {"live", "livedeint"}, -- input0_type
+ {"live", "livedeint"}, -- input1_type
+ {true, false} -- hq
+}, function(input0_type, input1_type, hq)
+ local input0_deint = (input0_type == "livedeint")
+ local input1_deint = (input1_type == "livedeint")
+ return make_sbs_chain(input0_deint, input1_deint, hq)
+end)
+
+function make_fade_input(chain, signal, live, deint)
+ local input, wb_effect, last
+ if live then
+ input = chain:add_live_input(false, deint)
+ wb_effect = chain:add_effect(WhiteBalanceEffect.new())
+ input:connect_signal(signal)
+ last = wb_effect
+ else
+ input = chain:add_effect(ImageInput.new("bg.jpeg"))
+ last = input
end
+
+ return {
+ input = input,
+ wb_effect = wb_effect,
+ last = last
+ }
end
-- A chain to fade between two inputs, of which either can be a picture
function make_fade_chain(input0_live, input0_deint, input1_live, input1_deint, hq)
local chain = EffectChain.new(16, 9)
- local input0, wb0_effect, input0_last, input1, wb1_effect, input1_last
+ local input0 = make_fade_input(chain, INPUT0_SIGNAL_NUM, input0_live, input0_deint)
+ local input1 = make_fade_input(chain, INPUT1_SIGNAL_NUM, input1_live, input1_deint)
- if input0_live then
- input0 = chain:add_live_input(false, input0_deint)
- 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(false, input1_deint)
- 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)
+ local mix_effect = chain:add_effect(MixEffect.new(), input0.last, input1.last)
chain:finalize(hq)
return {
chain = chain,
- input0 = {
- input = input0,
- wb_effect = wb0_effect
- },
- input1 = {
- input = input1,
- wb_effect = wb1_effect
- },
+ input0 = input0,
+ input1 = input1,
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, livedeint = true}) do
- local input0_deint = (input0_live == "livedeint")
- fade_chains[input0_type] = {}
- for input1_type, input1_live in pairs({static = false, live = true, livedeint = true}) do
- local input1_deint = (input1_live == "livedeint")
- 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, input0_deint, input1_live, input1_deint, hq)
- end
- end
-end
+local fade_chains = make_cartesian_product({
+ {"static", "live", "livedeint"}, -- input0_type
+ {"static", "live", "livedeint"}, -- input1_type
+ {true, false} -- hq
+}, function(input0_type, input1_type, hq)
+ local input0_live = (input0_type ~= "static")
+ local input1_live = (input1_type ~= "static")
+ local input0_deint = (input0_type == "livedeint")
+ local input1_deint = (input1_type == "livedeint")
+ return make_fade_chain(input0_live, input0_deint, input1_live, input1_deint, hq)
+end)
-- A chain to show a single input on screen.
function make_simple_chain(input_deint, hq)
end
-- Make all possible combinations of single-input chains.
-local simple_chains = {}
-for input_type, input_deint in pairs({live = false, livedeint = true}) do
- simple_chains[input_type] = {}
- for _, hq in pairs({true, false}) do
- simple_chains[input_type][hq] = make_simple_chain(input_deint, hq)
- end
-end
+local simple_chains = make_cartesian_product({
+ {"live", "livedeint"}, -- input_type
+ {true, false} -- hq
+}, function(input_type, hq)
+ local input_deint = (input_type == "livedeint")
+ return make_simple_chain(input_deint, hq)
+end)
-- A chain to show a single static picture on screen (HQ version).
local static_chain_hq = EffectChain.new(16, 9)
projects / nageru / blobdiff