X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=theme.lua;h=243b352670182c7bbd3c56dffe761bf32d5e268f;hb=adaeecd2ab8f1da45169861b7af22a0c7af066be;hp=8e433e279369c5b9bdc8bf325efeba0ef2e99f99;hpb=f815bbab16b716011ce5efa8d577e1e9786a48c0;p=nageru diff --git a/theme.lua b/theme.lua index 8e433e2..243b352 100644 --- a/theme.lua +++ b/theme.lua @@ -6,115 +6,344 @@ -- Themes are written in Lua, which reflects a simplified form of the Movit API -- where all the low-level details (such as texture formats) are handled by the -- C++ side and you generally just build chains. -io.write("hello from lua\n") local transition_start = -2.0 local transition_end = -1.0 local zoom_src = 0.0 local zoom_dst = 1.0 -local fade_src = 0.0 -local fade_dst = 1.0 +local zoom_poi = 0 -- which input to zoom in on +local fade_src_signal = 0 +local fade_dst_signal = 0 + +local input0_neutral_color = {0.5, 0.5, 0.5} +local input1_neutral_color = {0.5, 0.5, 0.5} local live_signal_num = 0 local preview_signal_num = 1 --- The main live chain. -function make_sbs_chain(hq) - local chain = EffectChain.new(16, 9) - local input0 = chain:add_live_input() - input0:connect_signal(0) - local input1 = chain:add_live_input() - input1:connect_signal(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 +local STATIC_SIGNAL_NUM = 3 + +-- “fake” signal number that signifies that we are fading from one input +-- to the next. +local FADE_SIGNAL_NUM = 4 + +-- Last width/height/resolution 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 = {} + +-- 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) + local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) local resample_effect = nil local resize_effect = nil if (hq) then - resample_effect = chain:add_effect(ResampleEffect.new(), input0) + resample_effect = chain:add_effect(ResampleEffect.new()) else - resize_effect = chain:add_effect(ResizeEffect.new(), input0) + resize_effect = chain:add_effect(ResizeEffect.new()) end local padding_effect = chain:add_effect(IntegralPaddingEffect.new()) - padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 1.0) - local resample2_effect = nil - local resize2_effect = nil - if (hq) then - resample2_effect = chain:add_effect(ResampleEffect.new(), input1) + return { + input = input, + wb_effect = wb_effect, + resample_effect = resample_effect, + resize_effect = resize_effect, + padding_effect = padding_effect + } +end + +-- The main live chain. +function make_sbs_chain(input0_deint, input1_deint, hq) + local chain = EffectChain.new(16, 9) + + local input0 = make_sbs_input(chain, INPUT0_SIGNAL_NUM, input0_deint, hq) + local input1 = make_sbs_input(chain, INPUT1_SIGNAL_NUM, input1_deint, hq) + + input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 1.0) + input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0) + + chain:add_effect(OverlayEffect.new(), input0.padding_effect, input1.padding_effect) + chain:finalize(hq) + + return { + chain = chain, + input0 = input0, + input1 = input1 + } +end + +-- Make all possible combinations of side-by-side chains. +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, scale) + local input, wb_effect, resample_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 - resize2_effect = chain:add_effect(ResizeEffect.new(), input1) + input = chain:add_effect(ImageInput.new("bg.jpeg")) + last = input end - -- Effect *saturation_effect = chain->add_effect(new SaturationEffect()) - -- CHECK(saturation_effect->set_float("saturation", 0.3f)) - local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) - wb_effect:set_float("output_color_temperature", 3500.0) - local padding2_effect = chain:add_effect(IntegralPaddingEffect.new()) - chain:add_effect(OverlayEffect.new(), padding_effect, padding2_effect) + -- If we cared about this for the non-main inputs, we would have + -- checked hq here and invoked ResizeEffect instead. + if scale then + resample_effect = chain:add_effect(ResampleEffect.new()) + last = resample_effect + end + + return { + input = input, + wb_effect = wb_effect, + resample_effect = resample_effect, + last = last + } +end + +-- 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, input0_deint, input0_scale, input1_live, input1_deint, input1_scale, hq) + local chain = EffectChain.new(16, 9) + + local input0 = make_fade_input(chain, INPUT0_SIGNAL_NUM, input0_live, input0_deint, input0_scale) + local input1 = make_fade_input(chain, INPUT1_SIGNAL_NUM, input1_live, input1_deint, input1_scale) + + local mix_effect = chain:add_effect(MixEffect.new(), input0.last, input1.last) chain:finalize(hq) return { chain = chain, - input0 = { - input = input0, - resample_effect = resample_effect, - resize_effect = resize_effect, - padding_effect = padding_effect - }, - input1 = { - input = input1, - resample_effect = resample2_effect, - resize_effect = resize2_effect, - padding_effect = padding2_effect - } + input0 = input0, + input1 = input1, + mix_effect = mix_effect } end -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_chain_hq = EffectChain.new(16, 9) -local fade_chain_hq_input0 = fade_chain_hq:add_live_input() -local fade_chain_hq_input1 = fade_chain_hq:add_live_input() -fade_chain_hq_input0:connect_signal(0) -fade_chain_hq_input1:connect_signal(1) -local fade_chain_mix_effect = fade_chain_hq:add_effect(MixEffect.new(), fade_chain_hq_input0, fade_chain_hq_input1) -fade_chain_hq:finalize(true) - --- A chain to show a single input on screen (HQ version). -local simple_chain_hq = EffectChain.new(16, 9) -local simple_chain_hq_input = simple_chain_hq:add_live_input() -simple_chain_hq_input:connect_signal(0) -- First input card. Can be changed whenever you want. -simple_chain_hq:finalize(true) - --- A chain to show a single input on screen (LQ version). -local simple_chain_lq = EffectChain.new(16, 9) -local simple_chain_lq_input = simple_chain_lq:add_live_input() -simple_chain_lq_input:connect_signal(0) -- First input card. Can be changed whenever you want. -simple_chain_lq:finalize(false) +-- Chains to fade between two inputs, in various configurations. +local fade_chains = make_cartesian_product({ + {"static", "live", "livedeint"}, -- input0_type + {true, false}, -- input0_scale + {"static", "live", "livedeint"}, -- input1_type + {true, false}, -- input1_scale + {true} -- hq +}, function(input0_type, input0_scale, input1_type, input1_scale, 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, input0_scale, input1_live, input1_deint, input1_scale, hq) +end) + +-- A chain to show a single input on screen. +function make_simple_chain(input_deint, input_scale, hq) + local chain = EffectChain.new(16, 9) + + local input = chain:add_live_input(false, input_deint) + input:connect_signal(0) -- First input card. Can be changed whenever you want. + local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) + chain:finalize(hq) + + local resample_effect, resize_effect + if scale then + if hq then + resample_effect = chain:add_effect(ResampleEffect.new()) + else + resize_effect = chain:add_effect(ResizeEffect.new()) + end + end + return { + chain = chain, + input = input, + wb_effect = wb_effect, + resample_effect = resample_effect, + resize_effect = resize_effect + } +end + +-- Make all possible combinations of single-input chains. +local simple_chains = make_cartesian_product({ + {"live", "livedeint"}, -- input_type + {true, false}, -- input_scale + {true, false} -- hq +}, function(input_type, input_scale, hq) + local input_deint = (input_type == "livedeint") + return make_simple_chain(input_deint, input_scale, hq) +end) + +-- A chain to show a single static picture on screen (HQ version). +local static_chain_hq = EffectChain.new(16, 9) +local static_chain_hq_input = static_chain_hq:add_effect(ImageInput.new("bg.jpeg")) +static_chain_hq:finalize(true) + +-- A chain to show a single static picture on screen (LQ version). +local static_chain_lq = EffectChain.new(16, 9) +local static_chain_lq_input = static_chain_lq:add_effect(ImageInput.new("bg.jpeg")) +static_chain_lq:finalize(false) + +-- Used for indexing into the tables of chains. +function get_input_type(signals, signal_num) + if signal_num == STATIC_SIGNAL_NUM then + return "static" + elseif signals:get_interlaced(signal_num) then + return "livedeint" + else + return "live" + end +end + +function needs_scale(signals, signal_num, width, height) + if signal_num == STATIC_SIGNAL_NUM then + -- We assume this is already correctly scaled at load time. + return false + end + assert(signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT1_SIGNAL_NUM) + return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height) +end + +function set_scale_parameters_if_needed(chain_or_input, width, height) + if chain_or_input.resample_effect then + chain_or_input.resample_effect:set_int("width", width) + chain_or_input.resample_effect:set_int("height", height) + elseif chain_or_input.resize_effect then + chain_or_input.resize_effect:set_int("width", width) + chain_or_input.resize_effect:set_int("height", height) + end +end + +-- 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 3 + return 4 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 - live_signal_num = 0 +-- Helper function to write e.g. “60” or “59.94”. +function get_frame_rate(signal_num) + local nom = last_resolution[signal_num].frame_rate_nom + local den = last_resolution[signal_num].frame_rate_den + if nom % den == 0 then + return nom / den + else + return string.format("%.2f", nom / den) end +end + +-- Helper function to write e.g. “720p60”. +function get_channel_resolution(signal_num) + if last_resolution[signal_num] then + if last_resolution[signal_num].height == 0 or + last_resolution[signal_num].height == 525 then + return "no signal" + elseif last_resolution[signal_num].interlaced then + return last_resolution[signal_num].height .. "i" .. get_frame_rate(signal_num) + else + return last_resolution[signal_num].height .. "p" .. get_frame_rate(signal_num) + end + else + return "no signal" + end +end + +-- 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) + if channel == 2 then + return "Input 1 (" .. get_channel_resolution(0) .. ")" + elseif channel == 3 then + return "Input 2 (" .. get_channel_resolution(1) .. ")" + elseif channel == 4 then + return "Side-by-side" + elseif channel == 5 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. +-- 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 + +-- 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 channel == 2 or channel == 3 +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 +-- 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 channel == 2 then + input0_neutral_color = { red, green, blue } + elseif channel == 3 then + input1_neutral_color = { red, green, blue } end - if live_signal_num == 3 and t >= transition_end and fade_dst == 0.0 then - live_signal_num = 1 +end + +function finish_transitions(t) + -- 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 fade but de-facto single, make it so. + if live_signal_num == FADE_SIGNAL_NUM and t >= transition_end then + live_signal_num = fade_dst_signal end end +-- API ENTRY POINT -- Called every frame. function get_transitions(t) finish_transitions(t) @@ -123,24 +352,26 @@ function get_transitions(t) 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 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 return {"Cut", "", "Fade"} end - if live_signal_num == 2 and preview_signal_num == 1 then - -- Zoom-out not supported here yet. - return {"Cut"} - end - - if live_signal_num == 2 and preview_signal_num == 0 then + -- Various zooms. + 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 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 @@ -150,7 +381,7 @@ 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 @@ -159,7 +390,7 @@ function transition_clicked(num, t) 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 @@ -176,8 +407,8 @@ function transition_clicked(num, t) 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 @@ -186,55 +417,55 @@ function transition_clicked(num, t) return end - if live_signal_num == 2 and preview_signal_num == 1 then - io.write("NOT SUPPORTED YET\n") - return - end - - if live_signal_num == 2 and preview_signal_num == 0 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 - preview_signal_num = 2 - elseif live_signal_num == 0 and preview_signal_num == 2 then + zoom_poi = preview_signal_num + 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_src = 1.0 zoom_dst = 0.0 - preview_signal_num = 0 - live_signal_num = 2 + preview_signal_num = live_signal_num + zoom_poi = live_signal_num + 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 - 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 + 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 = 0.0 - fade_dst = 1.0 - preview_signal_num = 1 - live_signal_num = 3 + fade_src_signal = live_signal_num + fade_dst_signal = preview_signal_num + preview_signal_num = live_signal_num + live_signal_num = FADE_SIGNAL_NUM else -- Fades involving SBS are ignored (we have no chain for it). end end end +-- API ENTRY POINT function channel_clicked(num) preview_signal_num = num end +-- API ENTRY POINT -- Called every frame. Get the chain for displaying at input , -- where 0 is live, 1 is preview, 2 is the first channel to display -- in the bottom bar, and so on up to num_channels()+1. t is the @@ -242,6 +473,11 @@ end -- 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). -- +-- 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 chain selection. +-- -- You should return two objects; the chain itself, and then a -- function (taking no parameters) that is run just before rendering. -- The function needs to call connect_signal on any inputs, so that @@ -253,78 +489,145 @@ end -- -- NOTE: The chain returned must be finalized with the Y'CbCr flag -- if and only if num==0. -function get_chain(num, t, width, height) +function get_chain(num, t, width, height, signals) + 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), + frame_rate_nom = signals:get_frame_rate_nom(signal_num), + frame_rate_den = signals:get_frame_rate_den(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 + end + last_resolution = input_resolution + 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 or live_signal_num == INPUT1_SIGNAL_NUM then -- Plain input. + local input_type = get_input_type(signals, live_signal_num) + local input_scale = needs_scale(signals, live_signal_num, width, height) + local chain = simple_chains[input_type][input_scale][true] prepare = function() - simple_chain_hq_input:connect_signal(live_signal_num) + chain.input:connect_signal(live_signal_num) + set_scale_parameters_if_needed(chain, width, height) + set_neutral_color_from_signal(chain.wb_effect, live_signal_num) end - return simple_chain_hq, prepare - elseif live_signal_num == 3 then -- Fade. + return chain.chain, prepare + elseif live_signal_num == STATIC_SIGNAL_NUM then -- Static picture. prepare = function() - fade_chain_hq_input0:connect_signal(0) - fade_chain_hq_input1:connect_signal(1) - local tt = (t - transition_start) / (transition_end - transition_start) - if tt < 0.0 then - tt = 0.0 - elseif tt > 1.0 then - tt = 1.0 + end + return static_chain_hq, prepare + elseif live_signal_num == FADE_SIGNAL_NUM then -- Fade. + local input0_type = get_input_type(signals, fade_src_signal) + local input0_scale = needs_scale(signals, fade_src_signal, width, height) + local input1_type = get_input_type(signals, fade_dst_signal) + local input1_scale = needs_scale(signals, fade_dst_signal, width, height) + local chain = fade_chains[input0_type][input0_scale][input1_type][input1_scale][true] + prepare = function() + if input0_type == "live" then + chain.input0.input:connect_signal(fade_src_signal) + set_neutral_color_from_signal(chain.input0.wb_effect, fade_src_signal) end + set_scale_parameters_if_needed(chain.input0, width, height) + if input1_type == "live" then + chain.input1.input:connect_signal(fade_dst_signal) + set_neutral_color_from_signal(chain.input1.wb_effect, fade_dst_signal) + end + set_scale_parameters_if_needed(chain.input1, width, height) + local tt = calc_fade_progress(t, transition_start, transition_end) - tt = fade_src + tt * (fade_dst - fade_src) - - fade_chain_mix_effect:set_float("strength_first", tt) - fade_chain_mix_effect:set_float("strength_second", 1.0 - tt) + chain.mix_effect:set_float("strength_first", 1.0 - tt) + chain.mix_effect:set_float("strength_second", tt) end - return fade_chain_hq, prepare + return chain.chain, prepare end - -- SBS code (live_signal_num == 2). + -- SBS code (live_signal_num == SBS_SIGNAL_NUM). + local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM) + local input1_type = get_input_type(signals, INPUT1_SIGNAL_NUM) if t > transition_end and zoom_dst == 1.0 then -- Special case: Show only the single image on screen. + local input0_scale = needs_scale(signals, fade_src_signal, width, height) + local chain = simple_chains[input0_type][input0_scale][true] prepare = function() - simple_chain_hq_input:connect_signal(0) + chain.input:connect_signal(INPUT0_SIGNAL_NUM) + set_scale_parameters_if_needed(chain, width, height) + set_neutral_color(chain.wb_effect, input0_neutral_color) end - return simple_chain_hq, prepare + return chain.chain, prepare end + local chain = sbs_chains[input0_type][input1_type][true] prepare = function() if t < transition_start then - prepare_sbs_chain(main_chain_hq, zoom_src, width, height) + prepare_sbs_chain(chain, zoom_src, width, height, input_resolution) elseif t > transition_end then - prepare_sbs_chain(main_chain_hq, zoom_dst, width, height) + prepare_sbs_chain(chain, zoom_dst, width, height, input_resolution) else local tt = (t - transition_start) / (transition_end - transition_start) -- Smooth it a bit. tt = math.sin(tt * 3.14159265358 * 0.5) - prepare_sbs_chain(main_chain_hq, zoom_src + (zoom_dst - zoom_src) * tt, width, height) + prepare_sbs_chain(chain, zoom_src + (zoom_dst - zoom_src) * tt, width, height, input_resolution) end end - return main_chain_hq.chain, prepare + return chain.chain, prepare end if num == 1 then -- Preview. num = preview_signal_num + 2 end - if num == 2 then + + -- Individual preview inputs. + if num == INPUT0_SIGNAL_NUM + 2 then + local input_type = get_input_type(signals, INPUT0_SIGNAL_NUM) + local input_scale = needs_scale(signals, INPUT0_SIGNAL_NUM, width, height) + local chain = simple_chains[input_type][input_scale][false] + prepare = function() + chain.input:connect_signal(INPUT0_SIGNAL_NUM) + set_scale_parameters_if_needed(chain, width, height) + set_neutral_color(chain.wb_effect, input0_neutral_color) + end + return chain.chain, prepare + end + if num == INPUT1_SIGNAL_NUM + 2 then + local input_type = get_input_type(signals, INPUT1_SIGNAL_NUM) + local input_scale = needs_scale(signals, INPUT1_SIGNAL_NUM, width, height) + local chain = simple_chains[input_type][input_scale][false] prepare = function() - simple_chain_lq_input:connect_signal(0) + chain.input:connect_signal(INPUT1_SIGNAL_NUM) + set_scale_parameters_if_needed(chain, width, height) + set_neutral_color(chain.wb_effect, input1_neutral_color) end - return simple_chain_lq, prepare + return chain.chain, prepare end - if num == 3 then + if num == SBS_SIGNAL_NUM + 2 then + local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM) + local input1_type = get_input_type(signals, INPUT1_SIGNAL_NUM) + local chain = sbs_chains[input0_type][input1_type][false] prepare = function() - simple_chain_lq_input:connect_signal(1) + prepare_sbs_chain(chain, 0.0, width, height, input_resolution) end - return simple_chain_lq, prepare + return chain.chain, prepare end - if num == 4 then + if num == STATIC_SIGNAL_NUM + 2 then prepare = function() - prepare_sbs_chain(main_chain_lq, 0.0, width, height) end - return main_chain_lq.chain, prepare + return static_chain_lq, prepare end end -function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height) +function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height) local srcx0 = 0.0 local srcx1 = 1.0 local srcy0 = 0.0 @@ -341,7 +644,15 @@ function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, return end - -- Clip. (TODO: Clip on upper/left sides, too.) + -- Clip. + if x0 < 0 then + srcx0 = -x0 / (x1 - x0) + x0 = 0 + end + if y0 < 0 then + srcy0 = -y0 / (y1 - y0) + y0 = 0 + end if x1 > screen_width then srcx1 = (screen_width - x0) / (x1 - x0) x1 = screen_width @@ -377,8 +688,8 @@ function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, padding_effect:set_int("top", math.floor(y0)) -- Correct _that_ discrepancy by subpixel offset in the resampling. - resample_effect:set_float("left", -x_subpixel_offset / zoom_x) - resample_effect:set_float("top", -y_subpixel_offset / zoom_y) + resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x) + resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y) -- Finally, adjust the border so it is exactly where we want it. padding_effect:set_float("border_offset_left", x_subpixel_offset) @@ -403,9 +714,15 @@ function round(x) return math.floor(x + 0.5) end -function prepare_sbs_chain(chain, t, screen_width, screen_height) +function lerp(a, b, t) + return a + (b - a) * t +end + +function prepare_sbs_chain(chain, t, screen_width, screen_height, input_resolution) chain.input0.input:connect_signal(0) chain.input1.input:connect_signal(1) + set_neutral_color(chain.input0.wb_effect, input0_neutral_color) + set_neutral_color(chain.input1.wb_effect, input1_neutral_color) -- First input is positioned (16,48) from top-left. local width0 = round(848 * screen_width/1280.0) @@ -417,8 +734,8 @@ function prepare_sbs_chain(chain, t, screen_width, screen_height) local right0 = left0 + width0 -- Second input is positioned (16,48) from the bottom-right. - local width1 = 384 * screen_width/1280.0 - local height1 = 216 * screen_height/720.0 + local width1 = round(384 * screen_width/1280.0) + local height1 = round(216 * screen_height/720.0) local bottom1 = screen_height - 48 * screen_height/720.0 local right1 = screen_width - 16 * screen_width/1280.0 @@ -426,9 +743,26 @@ function prepare_sbs_chain(chain, t, screen_width, screen_height) local left1 = right1 - width1 -- Interpolate between the fullscreen and side-by-side views. - local scale0 = 1.0 + t * (1280.0 / 848.0 - 1.0) - local tx0 = 0.0 + t * (-left0 * scale0) - local ty0 = 0.0 + t * (-top0 * scale0) + local scale0, tx0, tx0 + if zoom_poi == INPUT0_SIGNAL_NUM then + local new_left0 = lerp(left0, 0, t) + local new_right0 = lerp(right0, screen_width, t) + local new_top0 = lerp(top0, 0, t) + local new_bottom0 = lerp(bottom0, screen_height, t) + + scale0 = (new_right0 - new_left0) / width0 -- Same vertically and horizonally. + tx0 = new_left0 - left0 * scale0 + ty0 = new_top0 - top0 * scale0 + else + local new_left1 = lerp(left1, 0, t) + local new_right1 = lerp(right1, screen_width, t) + local new_top1 = lerp(top1, 0, t) + local new_bottom1 = lerp(bottom1, screen_height, t) + + scale0 = (new_right1 - new_left1) / width1 -- Same vertically and horizonally. + tx0 = new_left1 - left1 * scale0 + ty0 = new_top1 - top1 * scale0 + end top0 = top0 * scale0 + ty0 bottom0 = bottom0 * scale0 + ty0 @@ -439,6 +773,34 @@ function prepare_sbs_chain(chain, t, screen_width, screen_height) bottom1 = bottom1 * scale0 + ty0 left1 = left1 * scale0 + tx0 right1 = right1 * scale0 + tx0 - place_rectangle(chain.input0.resample_effect, chain.input0.resize_effect, chain.input0.padding_effect, left0, top0, right0, bottom0, screen_width, screen_height) - place_rectangle(chain.input1.resample_effect, chain.input1.resize_effect, chain.input1.padding_effect, left1, top1, right1, bottom1, screen_width, screen_height) + place_rectangle(chain.input0.resample_effect, chain.input0.resize_effect, chain.input0.padding_effect, left0, top0, right0, bottom0, screen_width, screen_height, input_resolution[0].width, input_resolution[0].height) + place_rectangle(chain.input1.resample_effect, chain.input1.resize_effect, chain.input1.padding_effect, left1, top1, right1, bottom1, screen_width, screen_height, input_resolution[1].width, input_resolution[1].height) +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(effect, signal) + if signal == INPUT0_SIGNAL_NUM then + set_neutral_color(effect, input0_neutral_color) + else + set_neutral_color(effect, input1_neutral_color) + end +end + +function calc_fade_progress(t, transition_start, transition_end) + local tt = (t - transition_start) / (transition_end - transition_start) + if tt < 0.0 then + tt = 0.0 + elseif tt > 1.0 then + tt = 1.0 + end + + -- Make the fade look maybe a tad more natural, by pumping it + -- through a sigmoid function. + tt = 10.0 * tt - 5.0 + tt = 1.0 / (1.0 + math.exp(-tt)) + + return tt end