X-Git-Url: https://git.sesse.net/?p=nageru;a=blobdiff_plain;f=theme.lua;h=77a1ff15cde855daf459367af3be3adc764d77d4;hp=b623541c2a1b38bfa8024e1983be6e097ed27850;hb=327534a3031a332423411c9599c741f2f81657df;hpb=5828abe9cdab7f63333676f8275475ba83c19523 diff --git a/theme.lua b/theme.lua index b623541..77a1ff1 100644 --- a/theme.lua +++ b/theme.lua @@ -7,18 +7,16 @@ -- where all the low-level details (such as texture formats) are handled by the -- C++ side and you generally just build chains. --- TODO: Deal with inputs that are different from our native 1280x720 resolution. - local transition_start = -2.0 local transition_end = -1.0 -local zoom_src = 0.0 -local zoom_dst = 1.0 -local zoom_poi = 0 -- which input to zoom in on -local fade_src_signal = 0 -local fade_dst_signal = 0 +local transition_type = 0 +local transition_src_signal = 0 +local transition_dst_signal = 0 -local input0_neutral_color = {0.5, 0.5, 0.5} -local input1_neutral_color = {0.5, 0.5, 0.5} +local neutral_colors = { + {0.5, 0.5, 0.5}, -- Input 0. + {0.5, 0.5, 0.5} -- Input 1. +} local live_signal_num = 0 local preview_signal_num = 1 @@ -29,9 +27,15 @@ 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 +-- Valid values for transition_type. (Cuts are done directly, so they need no entry.) +local NO_TRANSITION = 0 +local ZOOM_TRANSITION = 1 -- Also for slides. +local FADE_TRANSITION = 2 + +-- Last width/height/frame rate 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. @@ -54,7 +58,6 @@ 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 @@ -63,6 +66,7 @@ function make_sbs_input(chain, signal, deint, hq) else resize_effect = chain:add_effect(ResizeEffect.new()) end + local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) local padding_effect = chain:add_effect(IntegralPaddingEffect.new()) @@ -76,11 +80,11 @@ function make_sbs_input(chain, signal, deint, hq) end -- The main live chain. -function make_sbs_chain(input0_deint, input1_deint, hq) +function make_sbs_chain(input0_type, input1_type, 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) + local input0 = make_sbs_input(chain, INPUT0_SIGNAL_NUM, input0_type == "livedeint", hq) + local input1 = make_sbs_input(chain, INPUT1_SIGNAL_NUM, input1_type == "livedeint", 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) @@ -101,26 +105,37 @@ local sbs_chains = make_cartesian_product({ {"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) + return make_sbs_chain(input0_type, input1_type, hq) end) -function make_fade_input(chain, signal, live, deint) - local input, wb_effect, last +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 + last = input else input = chain:add_effect(ImageInput.new("bg.jpeg")) last = input end + -- 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 + + -- Make sure to put the white balance after the scaling (usually more efficient). + if live then + wb_effect = chain:add_effect(WhiteBalanceEffect.new()) + last = wb_effect + end + return { input = input, wb_effect = wb_effect, + resample_effect = resample_effect, last = last } end @@ -128,11 +143,11 @@ 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, input1_live, input1_deint, hq) +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) - local input1 = make_fade_input(chain, INPUT1_SIGNAL_NUM, input1_live, input1_deint) + 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) @@ -148,39 +163,54 @@ end -- 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} -- hq -}, function(input0_type, input1_type, hq) + {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, input1_live, input1_deint, hq) + 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, hq) +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 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 + local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) chain:finalize(hq) return { chain = chain, input = input, - wb_effect = wb_effect + 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, hq) +}, function(input_type, input_scale, hq) local input_deint = (input_type == "livedeint") - return make_simple_chain(input_deint, hq) + return make_simple_chain(input_deint, input_scale, hq) end) -- A chain to show a single static picture on screen (HQ version). @@ -204,110 +234,231 @@ function get_input_type(signals, signal_num) 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(is_plain_signal(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 4 end +function is_plain_signal(num) + return num == INPUT0_SIGNAL_NUM or num == INPUT1_SIGNAL_NUM +end + +-- Helper function to write e.g. “720p60”. The difference between this +-- and get_channel_resolution_raw() is that this one also can say that +-- there's no signal. +function get_channel_resolution(signal_num) + res = last_resolution[signal_num] + if (not res) or not res.is_connected then + return "disconnected" + end + if res.height <= 0 then + return "no signal" + end + if not res.has_signal then + if res.height == 525 then + -- Special mode for the USB3 cards. + return "no signal" + end + return get_channel_resolution_raw(res) .. ", no signal" + else + return get_channel_resolution_raw(res) + end +end + +-- Helper function to write e.g. “60” or “59.94”. +function get_frame_rate(res) + local nom = res.frame_rate_nom + local den = res.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_raw(res) + if res.interlaced then + return res.height .. "i" .. get_frame_rate(res) + else + return res.height .. "p" .. get_frame_rate(res) + end +end + +-- API ENTRY POINT -- Returns the name for each additional channel (starting from 2). --- Called only once for each channel, at the start of the program. +-- 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" - elseif channel == 3 then - return "Input 2" - elseif channel == 4 then + local signal_num = channel - 2 + if is_plain_signal(signal_num) then + return "Input " .. (signal_num + 1) .. " (" .. get_channel_resolution(signal_num) .. ")" + elseif signal_num == SBS_SIGNAL_NUM then return "Side-by-side" - elseif channel == 5 then + elseif signal_num == STATIC_SIGNAL_NUM 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. +-- (The information is used for whether right-click on the channel should bring up +-- an input selector or not.) +-- 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 +-- Called every frame. Returns the color (if any) to paint around the given +-- channel. Returns a CSS color (typically to mark live and preview signals); +-- "transparent" is allowed. +-- Will never be called for live (0) or preview (1). +function channel_color(channel) + if transition_type ~= NO_TRANSITION then + if channel_involved_in(channel, transition_src_signal) or + channel_involved_in(channel, transition_dst_signal) then + return "#f00" + end + else + if channel_involved_in(channel, live_signal_num) then + return "#f00" + end + end + if channel_involved_in(channel, preview_signal_num) then + return "#0f0" + end + return "transparent" +end + +function channel_involved_in(channel, signal_num) + if is_plain_signal(signal_num) then + return channel == (signal_num + 2) + end + if signal_num == SBS_SIGNAL_NUM then + return (channel == 2 or channel == 3) + end + if signal_num == STATIC_SIGNAL_NUM then + return (channel == 5) + end + return false +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 + return is_plain_signal(channel - 2) 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 channel == 2 then - input0_neutral_color = { red, green, blue } - elseif channel == 3 then - input1_neutral_color = { red, green, blue } + if is_plain_signal(channel - 2) then + neutral_colors[channel - 2 + 1] = { red, green, blue } end 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 + if transition_type ~= NO_TRANSITION and t >= transition_end then + live_signal_num = transition_dst_signal + transition_type = NO_TRANSITION end +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 +function in_transition(t) + return t >= transition_start and t <= transition_end end +-- API ENTRY POINT -- Called every frame. function get_transitions(t) + if in_transition(t) then + -- Transition already in progress, the only thing we can do is really + -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?) + return {"Cut"} + end + finish_transitions(t) if live_signal_num == preview_signal_num then + -- No transitions possible. return {} end - 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 == 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 + if (is_plain_signal(live_signal_num) or live_signal_num == STATIC_SIGNAL_NUM) and + (is_plain_signal(preview_signal_num) or preview_signal_num == STATIC_SIGNAL_NUM) then return {"Cut", "", "Fade"} end -- Various zooms. - if live_signal_num == SBS_SIGNAL_NUM and - (preview_signal_num == INPUT0_SIGNAL_NUM or preview_signal_num == INPUT1_SIGNAL_NUM) then + if live_signal_num == SBS_SIGNAL_NUM and is_plain_signal(preview_signal_num) then return {"Cut", "Zoom in"} - elseif (live_signal_num == INPUT0_SIGNAL_NUM or live_signal_num == INPUT1_SIGNAL_NUM) and - preview_signal_num == SBS_SIGNAL_NUM then + elseif is_plain_signal(live_signal_num) and preview_signal_num == SBS_SIGNAL_NUM then return {"Cut", "Zoom out"} end return {"Cut"} end +function swap_preview_live() + local temp = live_signal_num + live_signal_num = preview_signal_num + preview_signal_num = temp +end + +function start_transition(type_, t, duration) + transition_start = t + transition_end = t + duration + transition_type = type_ + transition_src_signal = live_signal_num + transition_dst_signal = preview_signal_num + swap_preview_live() +end + +-- API ENTRY POINT +-- Called when the user clicks a transition button. function transition_clicked(num, t) if num == 0 then -- Cut. - if live_signal_num == FADE_SIGNAL_NUM then - -- Ongoing fade; finish it immediately. + if in_transition(t) then + -- Ongoing transition; finish it immediately before the cut. finish_transitions(transition_end) end - local temp = live_signal_num - live_signal_num = preview_signal_num - preview_signal_num = temp - - 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 - transition_start = -2.0 - transition_end = -1.0 - end + swap_preview_live() elseif num == 1 then -- Zoom. - finish_transitions(t) if live_signal_num == preview_signal_num then @@ -315,63 +466,71 @@ function transition_clicked(num, t) return end - 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 + if is_plain_signal(live_signal_num) and is_plain_signal(preview_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 - live_signal_num = preview_signal_num - preview_signal_num = temp + swap_preview_live() return end - 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 = 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 = live_signal_num - zoom_poi = live_signal_num - live_signal_num = SBS_SIGNAL_NUM + if (live_signal_num == SBS_SIGNAL_NUM and is_plain_signal(preview_signal_num)) or + (preview_signal_num == SBS_SIGNAL_NUM and is_plain_signal(live_signal_num)) then + start_transition(ZOOM_TRANSITION, t, 1.0) end elseif num == 2 then finish_transitions(t) -- Fade. if (live_signal_num ~= preview_signal_num) and - (live_signal_num == INPUT0_SIGNAL_NUM or - live_signal_num == INPUT1_SIGNAL_NUM or + (is_plain_signal(live_signal_num) or live_signal_num == STATIC_SIGNAL_NUM) and - (preview_signal_num == INPUT0_SIGNAL_NUM or - preview_signal_num == INPUT1_SIGNAL_NUM or + (is_plain_signal(preview_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_SIGNAL_NUM + start_transition(FADE_TRANSITION, t, 1.0) 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 +function get_fade_chain(signals, t, width, height, input_resolution) + local input0_type = get_input_type(signals, transition_src_signal) + local input0_scale = needs_scale(signals, transition_src_signal, width, height) + local input1_type = get_input_type(signals, transition_dst_signal) + local input1_scale = needs_scale(signals, transition_dst_signal, width, height) + local chain = fade_chains[input0_type][input0_scale][input1_type][input1_scale][true] + prepare = function() + if input0_type == "live" or input0_type == "livedeint" then + chain.input0.input:connect_signal(transition_src_signal) + set_neutral_color_from_signal(chain.input0.wb_effect, transition_src_signal) + end + set_scale_parameters_if_needed(chain.input0, width, height) + if input1_type == "live" or input1_type == "livedeint" then + chain.input1.input:connect_signal(transition_dst_signal) + set_neutral_color_from_signal(chain.input1.wb_effect, transition_dst_signal) + end + set_scale_parameters_if_needed(chain.input1, width, height) + local tt = calc_fade_progress(t, transition_start, transition_end) + + chain.mix_effect:set_float("strength_first", 1.0 - tt) + chain.mix_effect:set_float("strength_second", tt) + end + return chain.chain, prepare +end + +-- SBS code (live_signal_num == SBS_SIGNAL_NUM, or in a transition to/from it). +function get_sbs_chain(signals, t, width, height, input_resolution) + local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM) + local input1_type = get_input_type(signals, INPUT1_SIGNAL_NUM) + return sbs_chains[input0_type][input1_type][true] +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 @@ -396,87 +555,83 @@ 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, 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), + 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) + } + + 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 == INPUT0_SIGNAL_NUM or live_signal_num == INPUT1_SIGNAL_NUM then -- Plain input. - local input_type = get_input_type(signals, live_signal_num) - local chain = simple_chains[input_type][true] + finish_transitions(t) + if transition_type == ZOOM_TRANSITION then + -- Transition in or out of SBS. + local chain = get_sbs_chain(signals, t, width, height, input_resolution) prepare = function() - chain.input:connect_signal(live_signal_num) - set_neutral_color_from_signal(chain.wb_effect, live_signal_num) + prepare_sbs_chain(chain, calc_zoom_progress(t), transition_type, transition_src_signal, transition_dst_signal, width, height, input_resolution) end return chain.chain, prepare - elseif live_signal_num == STATIC_SIGNAL_NUM then -- Static picture. + elseif transition_type == NO_TRANSITION and live_signal_num == SBS_SIGNAL_NUM then + -- Static SBS view. + local chain = get_sbs_chain(signals, t, width, height, input_resolution) prepare = function() - 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 input1_type = get_input_type(signals, fade_dst_signal) - local chain = fade_chains[input0_type][input1_type][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 - 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 - local tt = calc_fade_progress(t, transition_start, transition_end) - - chain.mix_effect:set_float("strength_first", 1.0 - tt) - chain.mix_effect:set_float("strength_second", tt) + prepare_sbs_chain(chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution) end return chain.chain, prepare - end - - -- 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 chain = simple_chains[input0_type][true] + elseif transition_type == FADE_TRANSITION then + return get_fade_chain(signals, t, width, height, input_resolution) + elseif is_plain_signal(live_signal_num) then + 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() - chain.input:connect_signal(INPUT0_SIGNAL_NUM) - set_neutral_color(chain.wb_effect, input0_neutral_color) + 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 chain.chain, prepare - end - local chain = sbs_chains[input0_type][input1_type][true] - prepare = function() - if t < transition_start then - prepare_sbs_chain(chain, zoom_src, width, height) - elseif t > transition_end then - prepare_sbs_chain(chain, zoom_dst, width, height) - 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(chain, zoom_src + (zoom_dst - zoom_src) * tt, width, height) + elseif live_signal_num == STATIC_SIGNAL_NUM then -- Static picture. + prepare = function() end + return static_chain_hq, prepare + else + assert(false) end - return chain.chain, prepare end if num == 1 then -- Preview. num = preview_signal_num + 2 end -- Individual preview inputs. - if num == INPUT0_SIGNAL_NUM + 2 then - local input_type = get_input_type(signals, INPUT0_SIGNAL_NUM) - local chain = simple_chains[input_type][false] + if is_plain_signal(num - 2) then + local signal_num = num - 2 + local input_type = get_input_type(signals, signal_num) + local input_scale = needs_scale(signals, signal_num, width, height) + local chain = simple_chains[input_type][input_scale][false] prepare = function() - chain.input:connect_signal(INPUT0_SIGNAL_NUM) - 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 chain = simple_chains[input_type][false] - prepare = function() - chain.input:connect_signal(INPUT1_SIGNAL_NUM) - set_neutral_color(chain.wb_effect, input1_neutral_color) + chain.input:connect_signal(signal_num) + set_scale_parameters_if_needed(chain, width, height) + set_neutral_color(chain.wb_effect, neutral_colors[signal_num + 1]) end return chain.chain, prepare end @@ -485,7 +640,7 @@ function get_chain(num, t, width, height, signals) local input1_type = get_input_type(signals, INPUT1_SIGNAL_NUM) local chain = sbs_chains[input0_type][input1_type][false] prepare = function() - prepare_sbs_chain(chain, 0.0, width, height) + prepare_sbs_chain(chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution) end return chain.chain, prepare end @@ -502,12 +657,20 @@ function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, local srcy0 = 0.0 local srcy1 = 1.0 + padding_effect:set_int("width", screen_width) + padding_effect:set_int("height", screen_height) + -- Cull. if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then - resample_effect:set_int("width", 1) - resample_effect:set_int("height", 1) - resample_effect:set_float("zoom_x", screen_width) - resample_effect:set_float("zoom_y", screen_height) + if resample_effect ~= nil then + resample_effect:set_int("width", 1) + resample_effect:set_int("height", 1) + resample_effect:set_float("zoom_x", screen_width) + resample_effect:set_float("zoom_y", screen_height) + else + resize_effect:set_int("width", 1) + resize_effect:set_int("height", 1) + end padding_effect:set_int("left", screen_width + 100) padding_effect:set_int("top", screen_height + 100) return @@ -587,63 +750,86 @@ function lerp(a, b, t) return a + (b - a) * t end -function prepare_sbs_chain(chain, t, screen_width, screen_height) +function lerp_pos(a, b, t) + return { + x0 = lerp(a.x0, b.x0, t), + y0 = lerp(a.y0, b.y0, t), + x1 = lerp(a.x1, b.x1, t), + y1 = lerp(a.y1, b.y1, t) + } +end + +function pos_from_top_left(x, y, width, height, screen_width, screen_height) + local xs = screen_width / 1280.0 + local ys = screen_height / 720.0 + return { + x0 = round(xs * x), + y0 = round(ys * y), + x1 = round(xs * (x + width)), + y1 = round(ys * (y + height)) + } +end + +function prepare_sbs_chain(chain, t, transition_type, src_signal, dst_signal, 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) + set_neutral_color(chain.input0.wb_effect, neutral_colors[1]) + set_neutral_color(chain.input1.wb_effect, neutral_colors[2]) -- First input is positioned (16,48) from top-left. - local width0 = round(848 * screen_width/1280.0) - local height0 = round(width0 * 9.0 / 16.0) - - local top0 = 48 * screen_height/720.0 - local left0 = 16 * screen_width/1280.0 - local bottom0 = top0 + height0 - local right0 = left0 + width0 - -- Second input is positioned (16,48) from the bottom-right. - 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 - local top1 = bottom1 - height1 - local left1 = right1 - width1 - - -- Interpolate between the fullscreen and side-by-side views. - 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 + local pos0 = pos_from_top_left(16, 48, 848, 477, screen_width, screen_height) + local pos1 = pos_from_top_left(1280 - 384 - 16, 720 - 216 - 48, 384, 216, screen_width, screen_height) + + local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height } + local affine_param + if transition_type == NO_TRANSITION then + -- Static SBS view. + affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity. 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) + -- Zooming to/from SBS view into or out of a single view. + assert(transition_type == ZOOM_TRANSITION) + local signal, real_t + if src_signal == SBS_SIGNAL_NUM then + signal = dst_signal + real_t = t + else + assert(dst_signal == SBS_SIGNAL_NUM) + signal = src_signal + real_t = 1.0 - t + end - scale0 = (new_right1 - new_left1) / width1 -- Same vertically and horizonally. - tx0 = new_left1 - left1 * scale0 - ty0 = new_top1 - top1 * scale0 + if signal == INPUT0_SIGNAL_NUM then + affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t)) + elseif signal == INPUT1_SIGNAL_NUM then + affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t)) + end end - top0 = top0 * scale0 + ty0 - bottom0 = bottom0 * scale0 + ty0 - left0 = left0 * scale0 + tx0 - right0 = right0 * scale0 + tx0 + -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays. + place_rectangle_with_affine(chain.input0.resample_effect, chain.input0.resize_effect, chain.input0.padding_effect, pos0, affine_param, screen_width, screen_height, input_resolution[0].width, input_resolution[0].height) + place_rectangle_with_affine(chain.input1.resample_effect, chain.input1.resize_effect, chain.input1.padding_effect, pos1, affine_param, screen_width, screen_height, input_resolution[1].width, input_resolution[1].height) +end - top1 = top1 * scale0 + ty0 - 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, 1280, 720) - place_rectangle(chain.input1.resample_effect, chain.input1.resize_effect, chain.input1.padding_effect, left1, top1, right1, bottom1, screen_width, screen_height, 1280, 720) +-- Find the transformation that changes the first rectangle to the second one. +function find_affine_param(a, b) + local sx = (b.x1 - b.x0) / (a.x1 - a.x0) + local sy = (b.y1 - b.y0) / (a.y1 - a.y0) + return { + sx = sx, + sy = sy, + tx = b.x0 - a.x0 * sx, + ty = b.y0 - a.y0 * sy + } +end + +function place_rectangle_with_affine(resample_effect, resize_effect, padding_effect, pos, aff, screen_width, screen_height, input_width, input_height) + local x0 = pos.x0 * aff.sx + aff.tx + local x1 = pos.x1 * aff.sx + aff.tx + local y0 = pos.y0 * aff.sy + aff.ty + local y1 = pos.y1 * aff.sy + aff.ty + + place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height) end function set_neutral_color(effect, color) @@ -651,19 +837,29 @@ function set_neutral_color(effect, color) end function set_neutral_color_from_signal(effect, signal) - if signal == INPUT0_SIGNAL_NUM then - set_neutral_color(effect, input0_neutral_color) + if is_plain_signal(signal) then + set_neutral_color(effect, neutral_colors[signal - INPUT0_SIGNAL_NUM + 1]) + end +end + +function calc_zoom_progress(t) + if t < transition_start then + return 0.0 + elseif t > transition_end then + return 1.0 else - set_neutral_color(effect, input1_neutral_color) + local tt = (t - transition_start) / (transition_end - transition_start) + -- Smooth it a bit. + return math.sin(tt * 3.14159265358 * 0.5) 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 + return 0.0 elseif tt > 1.0 then - tt = 1.0 + return 1.0 end -- Make the fade look maybe a tad more natural, by pumping it