1 -- Nageru theme for TFK mini-tournament 2017, based on the default theme.
3 local http_request = require("http.request")
4 local cqueues = require("cqueues")
5 local cq = cqueues.new()
6 local futatabi_server = "http://gruessi.trd.sesse.net:9095"
9 transition_start = -2.0,
10 transition_end = -1.0,
12 transition_src_signal = 0,
13 transition_dst_signal = 0,
16 {0.5, 0.5, 0.5}, -- Input 0.
17 {0.5, 0.5, 0.5}, -- Input 1.
18 {0.5, 0.5, 0.5}, -- Input 2.
19 {0.5, 0.5, 0.5}, -- Input 3.
20 {0.5, 0.5, 0.5}, -- Input 4.
21 {0.5, 0.5, 0.5} -- Input 5.
22 -- Will also be filled with VIDEO_SIGNAL_NUM below.
25 overlay_transition_start = -2.0,
26 overlay_transition_end = -1.0,
27 overlay_alpha_src = 0.0,
28 overlay_alpha_dst = 1.0,
29 overlay_enabled = false,
31 stinger_in_progress = false,
33 stinger_src_signal = 0,
34 stinger_dst_signal = 0,
35 stinger_save_overlay = false,
38 preview_signal_num = 1
40 local NUM_CAMERAS = 6 -- Remember to update neutral_colors, too.
42 -- Update the Futatabi status in the title.
46 local headers, stream = http_request.new_from_uri(futatabi_server .. "/queue_status"):go()
47 if headers == nil then
49 print(futatabi_server .. ": Could not connect to get queue_status")
50 elseif headers:get(":status") == "200" then
51 local body = stream:get_body_as_string()
53 replay_title = "IPTV (" .. body .. ")"
56 print(futatabi_server .. ": Empty body on HTTP request")
60 print(futatabi_server .. ": HTTP error " .. headers:get(":status"))
65 -- Valid values for live_signal_num and preview_signal_num.
66 local INPUT0_SIGNAL_NUM = 0
67 local INPUT1_SIGNAL_NUM = 1
68 local INPUT2_SIGNAL_NUM = 2
69 local INPUT3_SIGNAL_NUM = 3
70 local INPUT4_SIGNAL_NUM = 4
71 local INPUT5_SIGNAL_NUM = 5
72 local SBS_SIGNAL_NUM = NUM_CAMERAS
73 local STATIC_SIGNAL_NUM = NUM_CAMERAS + 1
74 local VIDEO_SIGNAL_NUM = NUM_CAMERAS + 2
76 state.neutral_colors[VIDEO_SIGNAL_NUM - INPUT0_SIGNAL_NUM + 1] = {0.5, 0.5, 0.5}
78 -- Preview-only signal showing the current signal with the overlay.
79 -- Not valid for live_signal_num!
80 local OVERLAY_SIGNAL_NUM = NUM_CAMERAS + 3
82 -- Valid values for transition_type. (Cuts are done directly, so they need no entry.)
83 local NO_TRANSITION = 0
84 local ZOOM_TRANSITION = 1
85 local FADE_TRANSITION = 2
87 -- Last width/height/frame rate for each channel, if we have it.
88 -- Note that unlike the values we get from Nageru, the resolution is per
89 -- frame and not per field, since we deinterlace.
90 local last_resolution = {}
92 local cef_path = Nageru.THEME_PATH:match("(.*)/nageru/")
93 local cef_input = HTMLInput.new("file://" .. cef_path .. "/score.html")
94 cef_input:execute_javascript_async("play()")
96 local bg_video = VideoInput.new(cef_path .. "/flow-720.mp4", Nageru.VIDEO_FORMAT_YCBCR)
97 -- local iptv_video = VideoInput.new("http://10.34.129.69:9060/1/v.flv", Nageru.VIDEO_FORMAT_YCBCR)
98 local iptv_video = VideoInput.new(futatabi_server, Nageru.VIDEO_FORMAT_YCBCR)
100 function reload_cef()
102 cef_input:execute_javascript_async("play()")
105 function disconnect_iptv()
106 iptv_video:disconnect()
109 -- Utility function to help creating many similar chains that can differ
110 -- in a free set of chosen parameters.
111 function make_cartesian_product(parms, callback)
112 return make_cartesian_product_internal(parms, callback, 1, {})
115 function make_cartesian_product_internal(parms, callback, index, args)
116 if index > #parms then
117 return callback(unpack(args))
120 for _, value in ipairs(parms[index]) do
122 ret[value] = make_cartesian_product_internal(parms, callback, index + 1, args)
127 -- An overlay with variable alpha.
128 function make_overlay(chain, base)
129 local image = chain:add_html_input(cef_input)
130 local multiply_effect = chain:add_effect(MultiplyEffect.new())
131 local overlay_effect = chain:add_effect(OverlayEffect.new(), base, multiply_effect)
134 multiply_effect = multiply_effect,
135 overlay_effect = overlay_effect
139 function possibly_make_overlay(has_overlay, chain, base)
140 if has_overlay == true then
141 return make_overlay(chain, base)
147 function make_fade_input(chain, signal, live, deint, scale, video)
148 local input, wb_effect, resample_effect, last
150 input = chain:add_video_input(iptv_video, false)
153 input = chain:add_live_input(false, deint)
154 input:connect_signal(signal)
157 input = chain:add_effect(ImageInput.new(cef_path .. "/nageru/dsn-bg.png"))
161 -- If we cared about this for the non-main inputs, we would have
162 -- checked hq here and invoked ResizeEffect instead.
164 resample_effect = chain:add_effect(ResampleEffect.new())
165 last = resample_effect
168 -- Make sure to put the white balance after the scaling (usually more efficient).
170 wb_effect = chain:add_effect(WhiteBalanceEffect.new())
176 wb_effect = wb_effect,
177 resample_effect = resample_effect,
182 -- A chain to fade between two inputs, of which either can be a picture
183 -- or a live input. In practice only used live, but we still support the
185 function make_fade_chain(input0_live, input0_deint, input0_scale, input0_video, input1_live, input1_deint, input1_scale, input1_video, has_overlay, hq)
186 local chain = EffectChain.new(16, 9)
188 local input0 = make_fade_input(chain, INPUT0_SIGNAL_NUM, input0_live, input0_deint, input0_scale, input0_video)
189 local input1 = make_fade_input(chain, INPUT1_SIGNAL_NUM, input1_live, input1_deint, input1_scale, input1_video)
191 -- If fading between two live inputs, the overlay is put on top.
192 -- If fading between the static picture and a live input,
193 -- the overlay is put on the live input.
195 if input0_live and not input1_live then
196 overlay = possibly_make_overlay(has_overlay, chain, input0.last)
198 input0.last = overlay.overlay_effect
200 elseif input1_live and not input0_live then
201 overlay = possibly_make_overlay(has_overlay, chain, input1.last)
203 input1.last = overlay.overlay_effect
207 local mix_effect = chain:add_effect(MixEffect.new(), input0.last, input1.last)
208 if input0_live and input1_live then
209 overlay = possibly_make_overlay(has_overlay, chain, mix_effect)
218 mix_effect = mix_effect,
223 -- Chains to fade between two inputs, in various configurations.
224 local fade_chains = make_cartesian_product({
225 {"video", "static", "live", "livedeint"}, -- input0_type
226 {true, false}, -- input0_scale
227 {"video", "static", "live", "livedeint"}, -- input1_type
228 {true, false}, -- input1_scale
229 {true, false}, -- has_overlay
231 }, function(input0_type, input0_scale, input1_type, input1_scale, has_overlay, hq)
232 local input0_live = (input0_type ~= "static")
233 local input1_live = (input1_type ~= "static")
234 local input0_deint = (input0_type == "livedeint")
235 local input1_deint = (input1_type == "livedeint")
236 local input0_video = (input0_type == "video")
237 local input1_video = (input1_type == "video")
238 return make_fade_chain(input0_live, input0_deint, input0_scale, input0_video, input1_live, input1_deint, input1_scale, input1_video, has_overlay, hq)
241 function make_sbs_input(chain, signal, deint, has_overlay, hq)
242 local input = chain:add_live_input(not deint, deint) -- Override bounce only if not deinterlacing.
243 input:connect_signal(signal)
245 local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) -- Needs to be before the overlay.
249 overlay = make_overlay(chain, wb_effect)
252 local resample_effect = nil
253 local resize_effect = nil
255 resample_effect = chain:add_effect(ResampleEffect.new())
257 resize_effect = chain:add_effect(ResizeEffect.new())
260 local padding_effect = chain:add_effect(IntegralPaddingEffect.new())
264 wb_effect = wb_effect,
265 resample_effect = resample_effect,
266 resize_effect = resize_effect,
267 padding_effect = padding_effect,
272 -- Side-by-side chains.
273 function make_sbs_chain(input0_type, input0_overlay, input1_type, hq)
274 local chain = EffectChain.new(16, 9)
276 local bg = chain:add_video_input(bg_video, false)
278 local input0 = make_sbs_input(chain, INPUT0_SIGNAL_NUM, input0_type == "livedeint", input0_overlay, hq)
279 local input1 = make_sbs_input(chain, INPUT4_SIGNAL_NUM, input1_type == "livedeint", false, hq)
281 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
282 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
284 local i0 = chain:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
285 chain:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
292 overlay = input0.overlay -- May be nil.
297 -- Make all possible combinations of side-by-side chains.
298 local sbs_chains = make_cartesian_product({
299 {"live", "livedeint"}, -- input0_type
300 {true, false}, -- input0_overlay
301 {"live", "livedeint"}, -- input1_type
303 }, function(input0_type, input0_overlay, input1_type, hq)
304 return make_sbs_chain(input0_type, input0_overlay, input1_type, hq)
307 function make_simple_chain_no_finalize(input_deint, input_video, input_scale, has_overlay, hq)
308 local chain = EffectChain.new(16, 9)
312 input = chain:add_video_input(iptv_video, false)
314 input = chain:add_live_input(false, input_deint)
315 input:connect_signal(0) -- First input card. Can be changed whenever you want.
318 local resample_effect, resize_effect
321 resample_effect = chain:add_effect(ResampleEffect.new())
323 resize_effect = chain:add_effect(ResizeEffect.new())
327 local wb_effect = chain:add_effect(WhiteBalanceEffect.new())
328 local overlay = possibly_make_overlay(has_overlay, chain, wb_effect)
333 wb_effect = wb_effect,
334 resample_effect = resample_effect,
335 resize_effect = resize_effect,
340 -- A chain to show a single input on screen.
341 function make_simple_chain(input_deint, input_video, input_scale, has_overlay, hq)
342 local chain = make_simple_chain_no_finalize(input_deint, input_video, input_scale, has_overlay, hq)
343 chain.chain:finalize(hq)
347 -- Make all possible combinations of single-input chains.
348 local simple_chains = make_cartesian_product({
349 {"video", "live", "livedeint"}, -- input_type
350 {true, false}, -- input_scale
351 {true, false}, -- has_overlay
353 }, function(input_type, input_scale, has_overlay, hq)
354 local input_deint = (input_type == "livedeint")
355 local input_video = (input_type == "video")
356 return make_simple_chain(input_deint, input_video, input_scale, has_overlay, hq)
359 -- A chain to show a single input on screen, with a stinger on top.
360 function make_stinger_chain(input_deint, input_video, input_scale, has_overlay, stinger_frame, hq)
361 local chain = make_simple_chain_no_finalize(input_deint, input_video, input_scale, has_overlay, hq)
362 local filename = cef_path .. "/stinger/blur" .. string.rep("0", 3 - string.len(tostring(stinger_frame))) .. stinger_frame .. ".png"
366 last = chain.overlay.overlay_effect
368 last = chain.wb_effect
370 local input = chain.chain:add_effect(ImageInput.new(filename))
371 chain.chain:add_effect(OverlayEffect.new(), last, input)
372 chain.chain:finalize(hq)
376 -- Single-input chains with various stinger frames on top.
377 local stinger_chains = make_cartesian_product({
378 {"video", "live", "livedeint"}, -- input_type
379 {true, false}, -- input_scale
380 {true, false}, -- has_overlay
381 {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}, -- stinger_frame
383 }, function(input_type, input_scale, has_overlay, stinger_frame, hq)
384 local input_deint = (input_type == "livedeint")
385 local input_video = (input_type == "video")
386 return make_stinger_chain(input_deint, input_video, input_scale, has_overlay, stinger_frame, hq)
389 -- A chain to show a single static picture on screen. Never with HTML overlay.
390 local static_chains = make_cartesian_product({
393 local chain = EffectChain.new(16, 9)
394 local chain_input = chain:add_effect(ImageInput.new(cef_path .. "/nageru/dsn-bg.png"))
402 -- A chain to show the overlay and nothing more. LQ only,
403 -- since it is not a valid live signal.
404 local overlay_chain_lq = EffectChain.new(16, 9)
405 local overlay_chain_lq_input = overlay_chain_lq:add_html_input(cef_input)
406 overlay_chain_lq:finalize(false)
408 -- Used for indexing into the tables of chains.
409 function get_input_type(signals, signal_num)
410 if signal_num == STATIC_SIGNAL_NUM then
412 elseif signal_num == VIDEO_SIGNAL_NUM then
414 elseif signals:get_interlaced(signal_num) then
421 function needs_scale(signals, signal_num, width, height)
422 if signal_num == STATIC_SIGNAL_NUM then
423 -- We assume this is already correctly scaled at load time.
426 assert(is_plain_signal(signal_num))
427 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
430 function set_scale_parameters_if_needed(chain_or_input, width, height)
431 if chain_or_input.resample_effect then
432 chain_or_input.resample_effect:set_int("width", width)
433 chain_or_input.resample_effect:set_int("height", height)
434 elseif chain_or_input.resize_effect then
435 chain_or_input.resize_effect:set_int("width", width)
436 chain_or_input.resize_effect:set_int("height", height)
441 -- Returns the number of outputs in addition to the live (0) and preview (1).
442 -- Called only once, at the start of the program.
443 function num_channels()
444 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
447 function is_plain_signal(num)
448 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT5_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
451 -- Helper function to write e.g. “720p60”. The difference between this
452 -- and get_channel_resolution_raw() is that this one also can say that
453 -- there's no signal.
454 function get_channel_resolution(signal_num)
455 local res = last_resolution[signal_num]
456 if (not res) or not res.is_connected then
457 return "disconnected"
459 if res.height <= 0 then
462 if not res.has_signal then
463 if res.height == 525 then
464 -- Special mode for the USB3 cards.
467 return get_channel_resolution_raw(res) .. ", no signal"
469 return get_channel_resolution_raw(res)
473 -- Helper function to write e.g. “60” or “59.94”.
474 function get_frame_rate(res)
475 local nom = res.frame_rate_nom
476 local den = res.frame_rate_den
477 if nom % den == 0 then
480 return string.format("%.2f", nom / den)
484 -- Helper function to write e.g. “720p60”.
485 function get_channel_resolution_raw(res)
486 if res.interlaced then
487 return res.height .. "i" .. get_frame_rate(res)
489 return res.height .. "p" .. get_frame_rate(res)
494 -- Returns the name for each additional channel (starting from 2).
495 -- Called at the start of the program, and then each frame for live
496 -- channels in case they change resolution.
497 function channel_name(channel)
498 local signal_num = channel - 2
499 if signal_num == INPUT0_SIGNAL_NUM then
500 return "Main (" .. get_channel_resolution(signal_num) .. ")"
501 elseif signal_num == INPUT1_SIGNAL_NUM then
502 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
503 elseif signal_num == INPUT2_SIGNAL_NUM then
504 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
505 elseif signal_num == INPUT3_SIGNAL_NUM then
506 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
507 elseif signal_num == INPUT4_SIGNAL_NUM then
508 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
509 elseif signal_num == INPUT5_SIGNAL_NUM then
510 return "Laptop (" .. get_channel_resolution(signal_num) .. ")"
511 elseif signal_num == SBS_SIGNAL_NUM then
512 return "Side-by-side"
513 elseif signal_num == STATIC_SIGNAL_NUM then
514 return "Static picture"
515 elseif signal_num == VIDEO_SIGNAL_NUM then
516 -- return "IPTV input (" .. get_channel_resolution(iptv_video:get_signal_num()) .. ")"
518 elseif signal_num == OVERLAY_SIGNAL_NUM then
524 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
525 -- Should return -1 if the channel does not correspond to a simple signal.
526 -- (The information is used for whether right-click on the channel should bring up
527 -- an input selector or not.)
528 -- Called once for each channel, at the start of the program.
529 -- Will never be called for live (0) or preview (1).
530 function channel_signal(channel)
531 if channel - 2 == VIDEO_SIGNAL_NUM then
532 return iptv_video:get_signal_num()
533 elseif is_plain_signal(channel - 2) then
541 -- Called every frame. Returns the color (if any) to paint around the given
542 -- channel. Returns a CSS color (typically to mark live and preview signals);
543 -- "transparent" is allowed.
544 -- Will never be called for live (0) or preview (1).
545 function channel_color(channel)
546 if state.transition_type ~= NO_TRANSITION then
547 if channel_involved_in(channel, state.transition_src_signal) or
548 channel_involved_in(channel, state.transition_dst_signal) then
552 if channel_involved_in(channel, state.live_signal_num) then
556 if channel_involved_in(channel, state.preview_signal_num) then
562 function channel_involved_in(channel, signal_num)
563 if is_plain_signal(signal_num) then
564 return channel == (signal_num + 2)
566 if signal_num == SBS_SIGNAL_NUM then
567 return is_sbs_participating_signal(channel - 2)
569 if signal_num == STATIC_SIGNAL_NUM then
570 return (channel == NUM_CAMERAS)
572 if signal_num == VIDEO_SIGNAL_NUM then
573 return (channel == NUM_CAMERAS + 1)
579 -- Returns if a given channel supports setting white balance (starting from 2).
580 -- Called only once for each channel, at the start of the program.
581 function supports_set_wb(channel)
582 return is_plain_signal(channel - 2)
586 -- Gets called with a new gray point when the white balance is changing.
587 -- The color is in linear light (not sRGB gamma).
588 function set_wb(channel, red, green, blue)
589 if is_plain_signal(channel - 2) then
590 state.neutral_colors[channel - 2 + 1] = { red, green, blue }
594 function finish_transitions(t)
595 if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
596 state.live_signal_num = state.transition_dst_signal
597 state.transition_type = NO_TRANSITION
600 -- Disable the overlay if it is no longer visible.
601 if state.overlay_enabled and t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
602 state.overlay_enabled = false
603 print("Turning off overlay")
607 function in_transition(t)
608 return t >= state.transition_start and t <= state.transition_end
611 function is_sbs_participating_signal(signal_num)
612 return signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT4_SIGNAL_NUM
615 function simple_signal_has_overlay(signal_num)
616 -- The commentator output has no overlay on it.
617 return signal_num ~= INPUT4_SIGNAL_NUM
621 -- Called every frame.
622 function get_transitions(t)
623 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
624 if t < state.overlay_transition_end then
628 if state.overlay_enabled then
629 return {"Overlay off", "", "Fade ovl out"}
631 return {"Overlay on", "", "Fade ovl in"}
635 if in_transition(t) then
636 -- Transition already in progress, the only thing we can do is really
637 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
641 if state.live_signal_num == state.preview_signal_num then
642 -- No transitions possible.
646 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
647 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
648 return {"Cut", "Sting", "Fade"}
651 if (is_plain_signal(state.live_signal_num) or state.live_signal_num == STATIC_SIGNAL_NUM) and
652 (is_plain_signal(state.preview_signal_num) or state.preview_signal_num == STATIC_SIGNAL_NUM) then
653 return {"Cut", "", "Fade"}
657 if state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num) then
658 return {"Cut", "Zoom in"}
659 elseif is_sbs_participating_signal(state.live_signal_num) and state.preview_signal_num == SBS_SIGNAL_NUM then
660 return {"Cut", "Zoom out"}
666 function swap_preview_live()
667 local temp = state.live_signal_num
668 state.live_signal_num = state.preview_signal_num
669 state.preview_signal_num = temp
672 function start_transition(type_, t, duration)
673 state.transition_start = t
674 state.transition_end = t + duration
675 state.transition_type = type_
676 state.transition_src_signal = state.live_signal_num
677 state.transition_dst_signal = state.preview_signal_num
678 state.stinger_in_progress = false
683 -- Called when the user clicks a transition button.
684 function transition_clicked(num, t)
685 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
688 state.overlay_transition_start = -2.0
689 state.overlay_transition_end = -1.0
690 if state.overlay_enabled then
691 state.overlay_enabled = false
692 state.overlay_alpha_src = 0.0
693 state.overlay_alpha_dst = 0.0
695 state.overlay_enabled = true
696 state.overlay_alpha_src = 1.0
697 state.overlay_alpha_dst = 1.0
701 state.overlay_transition_start = t
702 state.overlay_transition_end = t + 1.0
703 if state.overlay_enabled then
704 state.overlay_alpha_src = 1.0
705 state.overlay_alpha_dst = 0.0
707 state.overlay_alpha_src = 0.0
708 state.overlay_alpha_dst = 1.0
710 state.overlay_enabled = true
717 if in_transition(t) then
718 -- Ongoing transition; finish it immediately before the cut.
719 finish_transitions(state.transition_end)
723 state.stinger_in_progress = false
726 finish_transitions(t)
728 if state.live_signal_num == state.preview_signal_num then
733 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
734 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
736 if stinger_in_progress then
740 state.stinger_in_progress = true
741 state.stinger_frame = 0
742 state.stinger_src_signal = state.live_signal_num
743 state.stinger_dst_signal = state.preview_signal_num
747 if is_plain_signal(state.live_signal_num) and is_plain_signal(state.preview_signal_num) then
748 -- We can't zoom between these. Just make a cut.
749 io.write("Cutting from " .. state.live_signal_num .. " to " .. state.live_signal_num .. "\n")
751 state.stinger_in_progress = false
755 if (state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num)) or
756 (state.preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.live_signal_num)) then
757 start_transition(ZOOM_TRANSITION, t, 1.0)
760 finish_transitions(t)
763 if (state.live_signal_num ~= state.preview_signal_num) and
764 (is_plain_signal(state.live_signal_num) or
765 state.live_signal_num == STATIC_SIGNAL_NUM) and
766 (is_plain_signal(state.preview_signal_num) or
767 state.preview_signal_num == STATIC_SIGNAL_NUM) then
768 start_transition(FADE_TRANSITION, t, 1.0)
770 -- Fades involving SBS are ignored (we have no chain for it).
776 function channel_clicked(num)
777 state.preview_signal_num = num
780 function get_fade_chain(state, signals, t, width, height, input_resolution)
781 local input0_type = get_input_type(signals, state.transition_src_signal)
782 local input0_scale = needs_scale(signals, state.transition_src_signal, width, height)
783 local input1_type = get_input_type(signals, state.transition_dst_signal)
784 local input1_scale = needs_scale(signals, state.transition_dst_signal, width, height)
785 local chain = fade_chains[input0_type][input0_scale][input1_type][input1_scale][state.overlay_enabled][true]
786 local prepare = function()
787 if input0_type == "live" or input0_type == "livedeint" then
788 chain.input0.input:connect_signal(state.transition_src_signal)
790 if input0_type ~= "static" then
791 set_neutral_color_from_signal(state, chain.input0.wb_effect, state.transition_src_signal)
793 set_scale_parameters_if_needed(chain.input0, width, height)
794 if input1_type == "live" or input1_type == "livedeint" then
795 chain.input1.input:connect_signal(state.transition_dst_signal)
797 if input1_type ~= "static" then
798 set_neutral_color_from_signal(state, chain.input1.wb_effect, state.transition_dst_signal)
800 set_scale_parameters_if_needed(chain.input1, width, height)
801 local tt = calc_fade_progress(t, state.transition_start, state.transition_end)
803 chain.mix_effect:set_float("strength_first", 1.0 - tt)
804 chain.mix_effect:set_float("strength_second", tt)
806 -- The commentator output has no overlay on it.
807 local extra_alpha_factor = 1.0
808 if not simple_signal_has_overlay(state.transition_src_signal) and
809 not simple_signal_has_overlay(state.transition_dst_signal) then
810 extra_alpha_factor = 0.0
811 elseif not simple_signal_has_overlay(state.transition_src_signal) then
812 extra_alpha_factor = tt
813 elseif not simple_signal_has_overlay(state.transition_dst_signal) then
814 extra_alpha_factor = 1.0 - tt
816 prepare_overlay_live(state, chain, t, extra_alpha_factor)
818 return chain.chain, prepare
821 -- SBS code (live_signal_num == SBS_SIGNAL_NUM, or in a transition to/from it).
822 function get_sbs_chain(state, signals)
823 local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM)
824 local input1_type = get_input_type(signals, INPUT4_SIGNAL_NUM)
825 return sbs_chains[input0_type][state.overlay_enabled][input1_type][true]
828 function fetch_input_resolution(signals, signal_num)
830 width = signals:get_width(signal_num),
831 height = signals:get_height(signal_num),
832 interlaced = signals:get_interlaced(signal_num),
833 has_signal = signals:get_has_signal(signal_num),
834 is_connected = signals:get_is_connected(signal_num),
835 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
836 frame_rate_den = signals:get_frame_rate_den(signal_num)
839 if res.interlaced then
840 -- Convert height from frame height to field height.
841 -- (Needed for e.g. place_rectangle.)
842 res.height = res.height * 2
844 -- Show field rate instead of frame rate; really for cosmetics only
845 -- (and actually contrary to EBU recommendations, although in line
846 -- with typical user expectations).
847 res.frame_rate_nom = res.frame_rate_nom * 2
852 local last_rate = 0.0
855 -- Called every frame. Get the chain for displaying at input <num>,
856 -- where 0 is live, 1 is preview, 2 is the first channel to display
857 -- in the bottom bar, and so on up to num_channels()+1. t is the
858 -- current time in seconds. width and height are the dimensions of
859 -- the output, although you can ignore them if you don't need them
860 -- (they're useful if you want to e.g. know what to resample by).
862 -- <signals> is basically an exposed InputState, which you can use to
863 -- query for information about the signals at the point of the current
864 -- frame. In particular, you can call get_width() and get_height()
865 -- for any signal number, and use that to e.g. assist in chain selection.
867 -- You should return two objects; the chain itself, and then a
868 -- function (taking no parameters) that is run just before rendering.
869 -- The function needs to call connect_signal on any inputs, so that
870 -- it gets updated video data for the given frame. (You are allowed
871 -- to switch which input your input is getting from between frames,
872 -- but not calling connect_signal results in undefined behavior.)
873 -- If you want to change any parameters in the chain, this is also
876 -- NOTE: The chain returned must be finalized with the Y'CbCr flag
877 -- if and only if num==0.
878 function get_chain(num, t, width, height, signals)
881 local input_resolution = {}
882 for signal_num=0,(NUM_CAMERAS-1) do
883 input_resolution[signal_num] = fetch_input_resolution(signals, signal_num)
885 input_resolution[iptv_video:get_signal_num()] = fetch_input_resolution(signals, iptv_video:get_signal_num())
886 last_resolution = input_resolution
888 -- Make a (semi-shallow) copy of the current state, so that the returned prepare function
889 -- is unaffected by state changes made by the UI before it is rendered.
890 local state_copy = {}
891 for key, value in pairs(state) do
892 state_copy[key] = value
894 for key, value in pairs(state.neutral_colors) do
895 state_copy.neutral_colors[key] = value
898 -- Save some CPU time if we're not having SBS on live.
900 if state.live_signal_num == SBS_SIGNAL_NUM or
901 state.preview_signal_num == SBS_SIGNAL_NUM or
902 state.transition_type == ZOOM_TRANSITION then
907 if new_rate ~= last_rate then
908 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
909 bg_video:change_rate(new_rate)
913 if num == 0 then -- Live.
914 -- See if we're in a transition.
915 finish_transitions(t)
916 if state.transition_type == ZOOM_TRANSITION then
917 -- Transition in or out of SBS.
918 local chain = get_sbs_chain(state_copy, signals)
919 local prepare = function()
920 prepare_sbs_chain(state_copy, chain, calc_zoom_progress(t), state_copy.transition_type, state_copy.transition_src_signal, state_copy.transition_dst_signal, width, height, input_resolution)
921 prepare_overlay_live(state_copy, chain, t, 1.0)
923 return chain.chain, prepare
924 elseif state.transition_type == NO_TRANSITION and state.live_signal_num == SBS_SIGNAL_NUM then
926 local chain = get_sbs_chain(state_copy, signals)
927 local prepare = function()
928 prepare_sbs_chain(state_copy, chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution)
929 prepare_overlay_live(state_copy, chain, t, 1.0)
931 return chain.chain, prepare
932 elseif state.transition_type == FADE_TRANSITION then
933 return get_fade_chain(state_copy, signals, t, width, height, input_resolution)
934 elseif is_plain_signal(state.live_signal_num) then
935 local input_type = get_input_type(signals, state.live_signal_num)
936 local input_scale = needs_scale(signals, state.live_signal_num, width, height)
937 local overlay_really_enabled = state.overlay_enabled and simple_signal_has_overlay(state.live_signal_num)
939 if state.stinger_in_progress then
940 chain = stinger_chains[input_type][input_scale][overlay_really_enabled][state.stinger_frame][true]
941 state.stinger_frame = state.stinger_frame + 1
942 if state.stinger_frame >= 25 then
943 state.stinger_in_progress = false
944 state.preview_signal_num = state.stinger_src_signal
945 state.live_signal_num = state.stinger_dst_signal
947 if state.stinger_dst_signal == VIDEO_SIGNAL_NUM then
948 -- Turn off the overlay when playing video.
949 state.stinger_save_overlay = state.overlay_enabled
950 state.overlay_enabled = false
952 -- Restore the state.
953 state.overlay_enabled = state.stinger_save_overlay
957 chain = simple_chains[input_type][input_scale][overlay_really_enabled][true]
959 local prepare = function()
960 if input_type ~= "video" then
961 chain.input:connect_signal(state.live_signal_num)
963 set_neutral_color_from_signal(state_copy, chain.wb_effect, state.live_signal_num)
964 set_scale_parameters_if_needed(chain, width, height)
965 prepare_overlay_live(state_copy, chain, t, 1.0)
967 return chain.chain, prepare
968 elseif state.live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
969 local chain = static_chains[true]
970 local prepare = function()
971 prepare_overlay_live(state_copy, chain, t, 1.0) -- FIXME: Should this ever be here?
973 return chain.chain, prepare
979 -- We do not show overlays on the individual preview inputs.
980 -- The M/E preview matches what we'd put live by doing a transition, as always.
981 local show_overlay = false
982 if num == 1 then -- Preview.
983 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
984 num = state.live_signal_num + 2
985 show_overlay = not state.overlay_enabled
987 if state.transition_type ~= NO_TRANSITION then
988 num = state.transition_dst_signal + 2
991 num = state.preview_signal_num + 2
992 show_overlay = state.overlay_enabled and simple_signal_has_overlay(state.preview_signal_num)
996 -- Individual preview inputs (usually without overlay).
997 if is_plain_signal(num - 2) then
998 local signal_num = num - 2
999 local input_type = get_input_type(signals, signal_num)
1000 local input_scale = needs_scale(signals, signal_num, width, height)
1001 local chain = simple_chains[input_type][input_scale][show_overlay][false]
1002 local prepare = function()
1003 if input_type ~= "video" then
1004 chain.input:connect_signal(signal_num)
1006 set_neutral_color(chain.wb_effect, state_copy.neutral_colors[signal_num + 1])
1007 set_scale_parameters_if_needed(chain, width, height)
1008 prepare_overlay_static(chain, t)
1010 return chain.chain, prepare
1012 if num == SBS_SIGNAL_NUM + 2 then
1013 local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM)
1014 local input1_type = get_input_type(signals, INPUT4_SIGNAL_NUM)
1015 local chain = sbs_chains[input0_type][show_overlay][input1_type][false]
1016 local prepare = function()
1017 prepare_sbs_chain(state_copy, chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution)
1019 return chain.chain, prepare
1021 if num == STATIC_SIGNAL_NUM + 2 then
1022 local chain = static_chains[false]
1023 local prepare = function()
1024 prepare_overlay_static(chain, t)
1026 return chain.chain, prepare
1028 if num == OVERLAY_SIGNAL_NUM + 2 then
1029 local prepare = function()
1030 -- prepare_overlay(overlay_chain_lq, t)
1032 return overlay_chain_lq, prepare
1036 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
1038 return math.floor(x + 0.5)
1041 function lerp(a, b, t)
1042 return a + (b - a) * t
1045 function lerp_pos(a, b, t)
1047 x0 = lerp(a.x0, b.x0, t),
1048 y0 = lerp(a.y0, b.y0, t),
1049 x1 = lerp(a.x1, b.x1, t),
1050 y1 = lerp(a.y1, b.y1, t)
1054 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
1055 local xs = screen_width / 1280.0
1056 local ys = screen_height / 720.0
1060 x1 = round(xs * (x + width)),
1061 y1 = round(ys * (y + height))
1065 function prepare_sbs_chain(state, chain, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution)
1066 chain.input0.input:connect_signal(0)
1067 chain.input1.input:connect_signal(4)
1068 set_neutral_color(chain.input0.wb_effect, state.neutral_colors[1])
1069 set_neutral_color(chain.input1.wb_effect, state.neutral_colors[5])
1071 -- Both inputs are the same size (true side-by-side).
1072 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
1073 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
1075 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
1077 if transition_type == NO_TRANSITION then
1079 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
1081 -- Zooming to/from SBS view into or out of a single view.
1082 assert(transition_type == ZOOM_TRANSITION)
1083 local signal, real_t
1084 if src_signal == SBS_SIGNAL_NUM then
1088 assert(dst_signal == SBS_SIGNAL_NUM)
1093 if signal == INPUT0_SIGNAL_NUM then
1094 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
1095 elseif signal == INPUT4_SIGNAL_NUM then
1096 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
1100 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
1101 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)
1102 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)
1105 -- Find the transformation that changes the first rectangle to the second one.
1106 function find_affine_param(a, b)
1107 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
1108 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
1112 tx = b.x0 - a.x0 * sx,
1113 ty = b.y0 - a.y0 * sy
1117 function place_rectangle_with_affine(resample_effect, resize_effect, padding_effect, pos, aff, screen_width, screen_height, input_width, input_height)
1118 local x0 = pos.x0 * aff.sx + aff.tx
1119 local x1 = pos.x1 * aff.sx + aff.tx
1120 local y0 = pos.y0 * aff.sy + aff.ty
1121 local y1 = pos.y1 * aff.sy + aff.ty
1123 place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height)
1126 function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height)
1132 padding_effect:set_int("width", screen_width)
1133 padding_effect:set_int("height", screen_height)
1136 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
1137 if resample_effect ~= nil then
1138 resample_effect:set_int("width", 1)
1139 resample_effect:set_int("height", 1)
1140 resample_effect:set_float("zoom_x", screen_width)
1141 resample_effect:set_float("zoom_y", screen_height)
1143 resize_effect:set_int("width", 1)
1144 resize_effect:set_int("height", 1)
1146 padding_effect:set_int("left", screen_width + 100)
1147 padding_effect:set_int("top", screen_height + 100)
1153 srcx0 = -x0 / (x1 - x0)
1157 srcy0 = -y0 / (y1 - y0)
1160 if x1 > screen_width then
1161 srcx1 = (screen_width - x0) / (x1 - x0)
1164 if y1 > screen_height then
1165 srcy1 = (screen_height - y0) / (y1 - y0)
1169 if resample_effect ~= nil then
1170 -- High-quality resampling.
1171 local x_subpixel_offset = x0 - math.floor(x0)
1172 local y_subpixel_offset = y0 - math.floor(y0)
1174 -- Resampling must be to an integral number of pixels. Round up,
1175 -- and then add an extra pixel so we have some leeway for the border.
1176 local width = math.ceil(x1 - x0) + 1
1177 local height = math.ceil(y1 - y0) + 1
1178 resample_effect:set_int("width", width)
1179 resample_effect:set_int("height", height)
1181 -- Correct the discrepancy with zoom. (This will leave a small
1182 -- excess edge of pixels and subpixels, which we'll correct for soon.)
1183 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
1184 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
1185 resample_effect:set_float("zoom_x", zoom_x)
1186 resample_effect:set_float("zoom_y", zoom_y)
1187 resample_effect:set_float("zoom_center_x", 0.0)
1188 resample_effect:set_float("zoom_center_y", 0.0)
1190 -- Padding must also be to a whole-pixel offset.
1191 padding_effect:set_int("left", math.floor(x0))
1192 padding_effect:set_int("top", math.floor(y0))
1194 -- Correct _that_ discrepancy by subpixel offset in the resampling.
1195 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
1196 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
1198 -- Finally, adjust the border so it is exactly where we want it.
1199 padding_effect:set_float("border_offset_left", x_subpixel_offset)
1200 padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1201 padding_effect:set_float("border_offset_top", y_subpixel_offset)
1202 padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1204 -- Lower-quality simple resizing.
1205 local width = round(x1 - x0)
1206 local height = round(y1 - y0)
1207 resize_effect:set_int("width", width)
1208 resize_effect:set_int("height", height)
1210 -- Padding must also be to a whole-pixel offset.
1211 padding_effect:set_int("left", math.floor(x0))
1212 padding_effect:set_int("top", math.floor(y0))
1216 function prepare_overlay_live(state, chain, t, extra_alpha_factor)
1217 if chain.overlay then
1218 local tt = calc_fade_progress(t, state.overlay_transition_start, state.overlay_transition_end)
1219 local overlay_alpha = state.overlay_alpha_src + tt * (state.overlay_alpha_dst - state.overlay_alpha_src)
1220 overlay_alpha = overlay_alpha * extra_alpha_factor
1221 --print("overlay_alpha=" .. overlay_alpha .. " [" .. state.overlay_alpha_src .. "," .. state.overlay_alpha_dst .. "]@" .. tt)
1222 if t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
1223 state.overlay_enabled = false -- Takes effect next frame.
1224 -- print("Turning off overlay")
1226 chain.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1230 function prepare_overlay_static(chain)
1231 if chain.overlay then
1232 chain.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1236 function set_neutral_color(effect, color)
1237 effect:set_vec3("neutral_color", color[1], color[2], color[3])
1240 function set_neutral_color_from_signal(state, effect, signal)
1241 if is_plain_signal(signal) then
1242 set_neutral_color(effect, state.neutral_colors[signal - INPUT0_SIGNAL_NUM + 1])
1246 function calc_zoom_progress(t)
1247 if t < state.transition_start then
1249 elseif t > state.transition_end then
1252 local tt = (t - state.transition_start) / (state.transition_end - state.transition_start)
1254 return math.sin(tt * 3.14159265358 * 0.5)
1258 function calc_fade_progress(t, transition_start, transition_end)
1259 local tt = (t - transition_start) / (transition_end - transition_start)
1262 elseif tt > 1.0 then
1266 -- Make the fade look maybe a tad more natural, by pumping it
1267 -- through a sigmoid function.
1268 tt = 10.0 * tt - 5.0
1269 tt = 1.0 / (1.0 + math.exp(-tt))
1275 { "Reload overlay", reload_cef },
1276 { "Disconnect IPTV", disconnect_iptv }