1 -- Nageru theme for TFK mini-tournament 2017, based on the default theme.
3 local futatabi_server = "http://gruessi.trd.sesse.net:9096"
6 transition_start = -2.0,
9 transition_src_signal = 0,
10 transition_dst_signal = 0,
13 {0.5, 0.5, 0.5}, -- Input 0.
14 {0.5, 0.5, 0.5}, -- Input 1.
15 {0.5, 0.5, 0.5}, -- Input 2.
16 {0.5, 0.5, 0.5}, -- Input 3.
17 {0.5, 0.5, 0.5}, -- Input 4.
18 {0.5, 0.5, 0.5} -- Input 5.
19 -- Will also be filled with VIDEO_SIGNAL_NUM below.
22 overlay_transition_start = -2.0,
23 overlay_transition_end = -1.0,
24 overlay_alpha_src = 0.0,
25 overlay_alpha_dst = 1.0,
26 overlay_enabled = false,
28 stinger_in_progress = false,
30 stinger_src_signal = 0,
31 stinger_dst_signal = 0,
32 stinger_save_overlay = false,
35 preview_signal_num = 1
37 local NUM_CAMERAS = 6 -- Remember to update neutral_colors, too.
39 -- Valid values for live_signal_num and preview_signal_num.
40 local INPUT0_SIGNAL_NUM = 0
41 local INPUT1_SIGNAL_NUM = 1
42 local INPUT2_SIGNAL_NUM = 2
43 local INPUT3_SIGNAL_NUM = 3
44 local INPUT4_SIGNAL_NUM = 4
45 local INPUT5_SIGNAL_NUM = 5
46 local SBS_SIGNAL_NUM = NUM_CAMERAS
47 local STATIC_SIGNAL_NUM = NUM_CAMERAS + 1
48 local VIDEO_SIGNAL_NUM = NUM_CAMERAS + 2
50 state.neutral_colors[VIDEO_SIGNAL_NUM - INPUT0_SIGNAL_NUM + 1] = {0.5, 0.5, 0.5}
52 -- Preview-only signal showing the current signal with the overlay.
53 -- Not valid for live_signal_num!
54 local OVERLAY_SIGNAL_NUM = NUM_CAMERAS + 3
56 -- Valid values for transition_type. (Cuts are done directly, so they need no entry.)
57 local NO_TRANSITION = 0
58 local ZOOM_TRANSITION = 1
59 local FADE_TRANSITION = 2
61 -- Last width/height/frame rate for each channel, if we have it.
62 -- Note that unlike the values we get from Nageru, the resolution is per
63 -- frame and not per field, since we deinterlace.
64 local last_resolution = {}
66 local cef_path = Nageru.THEME_PATH:match("(.*)/nageru/")
67 local cef_input = HTMLInput.new("file://" .. cef_path .. "/score.html")
68 cef_input:execute_javascript_async("play()")
70 local bg_video = VideoInput.new(cef_path .. "/flow-720.mp4", Nageru.VIDEO_FORMAT_YCBCR)
71 -- local iptv_video = VideoInput.new("http://10.34.129.69:9060/1/v.flv", Nageru.VIDEO_FORMAT_YCBCR)
72 local iptv_video = VideoInput.new(futatabi_server, Nageru.VIDEO_FORMAT_YCBCR)
76 cef_input:execute_javascript_async("play()")
79 function disconnect_iptv()
80 iptv_video:disconnect()
83 -- Utility function to help creating many similar chains that can differ
84 -- in a free set of chosen parameters.
85 function make_cartesian_product(parms, callback)
86 return make_cartesian_product_internal(parms, callback, 1, {})
89 function make_cartesian_product_internal(parms, callback, index, args)
90 if index > #parms then
91 return callback(unpack(args))
94 for _, value in ipairs(parms[index]) do
96 ret[value] = make_cartesian_product_internal(parms, callback, index + 1, args)
101 -- An overlay with variable alpha.
102 function make_overlay(chain, base)
103 local image = chain:add_html_input(cef_input)
104 local multiply_effect = chain:add_effect(MultiplyEffect.new())
105 local overlay_effect = chain:add_effect(OverlayEffect.new(), base, multiply_effect)
108 multiply_effect = multiply_effect,
109 overlay_effect = overlay_effect
113 function possibly_make_overlay(has_overlay, chain, base)
114 if has_overlay == true then
115 return make_overlay(chain, base)
121 function make_fade_input(chain, signal, live, deint, scale, video)
122 local input, wb_effect, resample_effect, last
124 input = chain:add_video_input(iptv_video, false)
127 input = chain:add_live_input(false, deint)
128 input:connect_signal(signal)
131 input = chain:add_effect(ImageInput.new(cef_path .. "/nageru/dsn-bg.png"))
135 -- If we cared about this for the non-main inputs, we would have
136 -- checked hq here and invoked ResizeEffect instead.
138 resample_effect = chain:add_effect(ResampleEffect.new())
139 last = resample_effect
142 -- Make sure to put the white balance after the scaling (usually more efficient).
144 wb_effect = chain:add_effect(WhiteBalanceEffect.new())
150 wb_effect = wb_effect,
151 resample_effect = resample_effect,
156 -- A chain to fade between two inputs, of which either can be a picture
157 -- or a live input. In practice only used live, but we still support the
159 function make_fade_chain(input0_live, input0_deint, input0_scale, input0_video, input1_live, input1_deint, input1_scale, input1_video, has_overlay, hq)
160 local chain = EffectChain.new(16, 9)
162 local input0 = make_fade_input(chain, INPUT0_SIGNAL_NUM, input0_live, input0_deint, input0_scale, input0_video)
163 local input1 = make_fade_input(chain, INPUT1_SIGNAL_NUM, input1_live, input1_deint, input1_scale, input1_video)
165 -- If fading between two live inputs, the overlay is put on top.
166 -- If fading between the static picture and a live input,
167 -- the overlay is put on the live input.
169 if input0_live and not input1_live then
170 overlay = possibly_make_overlay(has_overlay, chain, input0.last)
172 input0.last = overlay.overlay_effect
174 elseif input1_live and not input0_live then
175 overlay = possibly_make_overlay(has_overlay, chain, input1.last)
177 input1.last = overlay.overlay_effect
181 local mix_effect = chain:add_effect(MixEffect.new(), input0.last, input1.last)
182 if input0_live and input1_live then
183 overlay = possibly_make_overlay(has_overlay, chain, mix_effect)
192 mix_effect = mix_effect,
197 -- Chains to fade between two inputs, in various configurations.
198 local fade_chains = make_cartesian_product({
199 {"video", "static", "live", "livedeint"}, -- input0_type
200 {true, false}, -- input0_scale
201 {"video", "static", "live", "livedeint"}, -- input1_type
202 {true, false}, -- input1_scale
203 {true, false}, -- has_overlay
205 }, function(input0_type, input0_scale, input1_type, input1_scale, has_overlay, hq)
206 local input0_live = (input0_type ~= "static")
207 local input1_live = (input1_type ~= "static")
208 local input0_deint = (input0_type == "livedeint")
209 local input1_deint = (input1_type == "livedeint")
210 local input0_video = (input0_type == "video")
211 local input1_video = (input1_type == "video")
212 return make_fade_chain(input0_live, input0_deint, input0_scale, input0_video, input1_live, input1_deint, input1_scale, input1_video, has_overlay, hq)
215 function make_sbs_input(chain, signal, deint, has_overlay, hq)
216 local input = chain:add_live_input(not deint, deint) -- Override bounce only if not deinterlacing.
217 input:connect_signal(signal)
219 local wb_effect = chain:add_effect(WhiteBalanceEffect.new()) -- Needs to be before the overlay.
223 overlay = make_overlay(chain, wb_effect)
226 local resample_effect = nil
227 local resize_effect = nil
229 resample_effect = chain:add_effect(ResampleEffect.new())
231 resize_effect = chain:add_effect(ResizeEffect.new())
234 local padding_effect = chain:add_effect(IntegralPaddingEffect.new())
238 wb_effect = wb_effect,
239 resample_effect = resample_effect,
240 resize_effect = resize_effect,
241 padding_effect = padding_effect,
246 -- Side-by-side chains.
247 function make_sbs_chain(input0_type, input0_overlay, input1_type, hq)
248 local chain = EffectChain.new(16, 9)
250 local bg = chain:add_video_input(bg_video, false)
252 local input0 = make_sbs_input(chain, INPUT0_SIGNAL_NUM, input0_type == "livedeint", input0_overlay, hq)
253 local input1 = make_sbs_input(chain, INPUT4_SIGNAL_NUM, input1_type == "livedeint", false, hq)
255 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
256 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
258 local i0 = chain:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
259 chain:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
266 overlay = input0.overlay -- May be nil.
271 -- Make all possible combinations of side-by-side chains.
272 local sbs_chains = make_cartesian_product({
273 {"live", "livedeint"}, -- input0_type
274 {true, false}, -- input0_overlay
275 {"live", "livedeint"}, -- input1_type
277 }, function(input0_type, input0_overlay, input1_type, hq)
278 return make_sbs_chain(input0_type, input0_overlay, input1_type, hq)
281 function make_simple_chain_no_finalize(input_deint, input_video, input_scale, has_overlay, hq)
282 local chain = EffectChain.new(16, 9)
286 input = chain:add_video_input(iptv_video, false)
288 input = chain:add_live_input(false, input_deint)
289 input:connect_signal(0) -- First input card. Can be changed whenever you want.
292 local resample_effect, resize_effect
295 resample_effect = chain:add_effect(ResampleEffect.new())
297 resize_effect = chain:add_effect(ResizeEffect.new())
301 local wb_effect = chain:add_effect(WhiteBalanceEffect.new())
302 local overlay = possibly_make_overlay(has_overlay, chain, wb_effect)
307 wb_effect = wb_effect,
308 resample_effect = resample_effect,
309 resize_effect = resize_effect,
314 -- A chain to show a single input on screen.
315 function make_simple_chain(input_deint, input_video, input_scale, has_overlay, hq)
316 local chain = make_simple_chain_no_finalize(input_deint, input_video, input_scale, has_overlay, hq)
317 chain.chain:finalize(hq)
321 -- Make all possible combinations of single-input chains.
322 local simple_chains = make_cartesian_product({
323 {"video", "live", "livedeint"}, -- input_type
324 {true, false}, -- input_scale
325 {true, false}, -- has_overlay
327 }, function(input_type, input_scale, has_overlay, hq)
328 local input_deint = (input_type == "livedeint")
329 local input_video = (input_type == "video")
330 return make_simple_chain(input_deint, input_video, input_scale, has_overlay, hq)
333 -- A chain to show a single input on screen, with a stinger on top.
334 function make_stinger_chain(input_deint, input_video, input_scale, has_overlay, stinger_frame, hq)
335 local chain = make_simple_chain_no_finalize(input_deint, input_video, input_scale, has_overlay, hq)
336 local filename = cef_path .. "/stinger/blur" .. string.rep("0", 3 - string.len(tostring(stinger_frame))) .. stinger_frame .. ".png"
340 last = chain.overlay.overlay_effect
342 last = chain.wb_effect
344 local input = chain.chain:add_effect(ImageInput.new(filename))
345 chain.chain:add_effect(OverlayEffect.new(), last, input)
346 chain.chain:finalize(hq)
350 -- Single-input chains with various stinger frames on top.
351 local stinger_chains = make_cartesian_product({
352 {"video", "live", "livedeint"}, -- input_type
353 {true, false}, -- input_scale
354 {true, false}, -- has_overlay
355 {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
357 }, function(input_type, input_scale, has_overlay, stinger_frame, hq)
358 local input_deint = (input_type == "livedeint")
359 local input_video = (input_type == "video")
360 return make_stinger_chain(input_deint, input_video, input_scale, has_overlay, stinger_frame, hq)
363 -- A chain to show a single static picture on screen. Never with HTML overlay.
364 local static_chains = make_cartesian_product({
367 local chain = EffectChain.new(16, 9)
368 local chain_input = chain:add_effect(ImageInput.new(cef_path .. "/nageru/dsn-bg.png"))
376 -- A chain to show the overlay and nothing more. LQ only,
377 -- since it is not a valid live signal.
378 local overlay_chain_lq = EffectChain.new(16, 9)
379 local overlay_chain_lq_input = overlay_chain_lq:add_html_input(cef_input)
380 overlay_chain_lq:finalize(false)
382 -- Used for indexing into the tables of chains.
383 function get_input_type(signals, signal_num)
384 if signal_num == STATIC_SIGNAL_NUM then
386 elseif signal_num == VIDEO_SIGNAL_NUM then
388 elseif signals:get_interlaced(signal_num) then
395 function needs_scale(signals, signal_num, width, height)
396 if signal_num == STATIC_SIGNAL_NUM then
397 -- We assume this is already correctly scaled at load time.
400 assert(is_plain_signal(signal_num))
401 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
404 function set_scale_parameters_if_needed(chain_or_input, width, height)
405 if chain_or_input.resample_effect then
406 chain_or_input.resample_effect:set_int("width", width)
407 chain_or_input.resample_effect:set_int("height", height)
408 elseif chain_or_input.resize_effect then
409 chain_or_input.resize_effect:set_int("width", width)
410 chain_or_input.resize_effect:set_int("height", height)
415 -- Returns the number of outputs in addition to the live (0) and preview (1).
416 -- Called only once, at the start of the program.
417 function num_channels()
418 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
421 function is_plain_signal(num)
422 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT5_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
425 -- Helper function to write e.g. “720p60”. The difference between this
426 -- and get_channel_resolution_raw() is that this one also can say that
427 -- there's no signal.
428 function get_channel_resolution(signal_num)
429 local res = last_resolution[signal_num]
430 if (not res) or not res.is_connected then
431 return "disconnected"
433 if res.height <= 0 then
436 if not res.has_signal then
437 if res.height == 525 then
438 -- Special mode for the USB3 cards.
441 return get_channel_resolution_raw(res) .. ", no signal"
443 return get_channel_resolution_raw(res)
447 -- Helper function to write e.g. “60” or “59.94”.
448 function get_frame_rate(res)
449 local nom = res.frame_rate_nom
450 local den = res.frame_rate_den
451 if nom % den == 0 then
454 return string.format("%.2f", nom / den)
458 -- Helper function to write e.g. “720p60”.
459 function get_channel_resolution_raw(res)
460 if res.interlaced then
461 return res.height .. "i" .. get_frame_rate(res)
463 return res.height .. "p" .. get_frame_rate(res)
467 function get_futatabi_status(str)
470 for word in string.gmatch(str, '([^;]+)') do
471 table.insert(fields, word)
472 num_fields = num_fields + 1
474 if num_fields >= 4 then
482 -- Returns the name for each additional channel (starting from 2).
483 -- Called at the start of the program, and then each frame for live
484 -- channels in case they change resolution.
485 function channel_name(channel)
486 local signal_num = channel - 2
487 if signal_num == INPUT0_SIGNAL_NUM then
488 return "Main (" .. get_channel_resolution(signal_num) .. ")"
489 elseif signal_num == INPUT1_SIGNAL_NUM then
490 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
491 elseif signal_num == INPUT2_SIGNAL_NUM then
492 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
493 elseif signal_num == INPUT3_SIGNAL_NUM then
494 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
495 elseif signal_num == INPUT4_SIGNAL_NUM then
496 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
497 elseif signal_num == INPUT5_SIGNAL_NUM then
498 return "Laptop (" .. get_channel_resolution(signal_num) .. ")"
499 elseif signal_num == SBS_SIGNAL_NUM then
500 return "Side-by-side"
501 elseif signal_num == STATIC_SIGNAL_NUM then
502 return "Static picture"
503 elseif signal_num == VIDEO_SIGNAL_NUM then
504 local res = last_resolution[iptv_video:get_signal_num()]
505 if (not res) or res.last_subtitle == nil then
508 return "IPTV (" .. get_futatabi_status(res.last_subtitle) .. ")"
510 elseif signal_num == OVERLAY_SIGNAL_NUM then
516 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
517 -- Should return -1 if the channel does not correspond to a simple signal.
518 -- (The information is used for whether right-click on the channel should bring up
519 -- an input selector or not.)
520 -- Called once for each channel, at the start of the program.
521 -- Will never be called for live (0) or preview (1).
522 function channel_signal(channel)
523 if channel - 2 == VIDEO_SIGNAL_NUM then
524 return iptv_video:get_signal_num()
525 elseif is_plain_signal(channel - 2) then
533 -- Called every frame. Returns the color (if any) to paint around the given
534 -- channel. Returns a CSS color (typically to mark live and preview signals);
535 -- "transparent" is allowed.
536 -- Will never be called for live (0) or preview (1).
537 function channel_color(channel)
538 if state.transition_type ~= NO_TRANSITION then
539 if channel_involved_in(channel, state.transition_src_signal) or
540 channel_involved_in(channel, state.transition_dst_signal) then
544 if channel_involved_in(channel, state.live_signal_num) then
548 if channel_involved_in(channel, state.preview_signal_num) then
554 function channel_involved_in(channel, signal_num)
555 if is_plain_signal(signal_num) then
556 return channel == (signal_num + 2)
558 if signal_num == SBS_SIGNAL_NUM then
559 return is_sbs_participating_signal(channel - 2)
561 if signal_num == STATIC_SIGNAL_NUM then
562 return (channel == NUM_CAMERAS)
564 if signal_num == VIDEO_SIGNAL_NUM then
565 return (channel == NUM_CAMERAS + 1)
571 -- Returns if a given channel supports setting white balance (starting from 2).
572 -- Called only once for each channel, at the start of the program.
573 function supports_set_wb(channel)
574 return is_plain_signal(channel - 2)
578 -- Gets called with a new gray point when the white balance is changing.
579 -- The color is in linear light (not sRGB gamma).
580 function set_wb(channel, red, green, blue)
581 if is_plain_signal(channel - 2) then
582 state.neutral_colors[channel - 2 + 1] = { red, green, blue }
586 function finish_transitions(t)
587 if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
588 state.live_signal_num = state.transition_dst_signal
589 state.transition_type = NO_TRANSITION
592 -- Disable the overlay if it is no longer visible.
593 if state.overlay_enabled and t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
594 state.overlay_enabled = false
595 print("Turning off overlay")
599 function in_transition(t)
600 return t >= state.transition_start and t <= state.transition_end
603 function is_sbs_participating_signal(signal_num)
604 return signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT4_SIGNAL_NUM
607 function simple_signal_has_overlay(signal_num)
608 -- The commentator output has no overlay on it.
609 return signal_num ~= INPUT4_SIGNAL_NUM
613 -- Called every frame.
614 function get_transitions(t)
615 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
616 if t < state.overlay_transition_end then
620 if state.overlay_enabled then
621 return {"Overlay off", "", "Fade ovl out"}
623 return {"Overlay on", "", "Fade ovl in"}
627 if in_transition(t) then
628 -- Transition already in progress, the only thing we can do is really
629 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
633 if state.live_signal_num == state.preview_signal_num then
634 -- No transitions possible.
638 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
639 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
640 return {"Cut", "Sting", "Fade"}
643 if (is_plain_signal(state.live_signal_num) or state.live_signal_num == STATIC_SIGNAL_NUM) and
644 (is_plain_signal(state.preview_signal_num) or state.preview_signal_num == STATIC_SIGNAL_NUM) then
645 return {"Cut", "", "Fade"}
649 if state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num) then
650 return {"Cut", "Zoom in"}
651 elseif is_sbs_participating_signal(state.live_signal_num) and state.preview_signal_num == SBS_SIGNAL_NUM then
652 return {"Cut", "Zoom out"}
658 function swap_preview_live()
659 local temp = state.live_signal_num
660 state.live_signal_num = state.preview_signal_num
661 state.preview_signal_num = temp
664 function start_transition(type_, t, duration)
665 state.transition_start = t
666 state.transition_end = t + duration
667 state.transition_type = type_
668 state.transition_src_signal = state.live_signal_num
669 state.transition_dst_signal = state.preview_signal_num
670 state.stinger_in_progress = false
675 -- Called when the user clicks a transition button.
676 function transition_clicked(num, t)
677 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
680 state.overlay_transition_start = -2.0
681 state.overlay_transition_end = -1.0
682 if state.overlay_enabled then
683 state.overlay_enabled = false
684 state.overlay_alpha_src = 0.0
685 state.overlay_alpha_dst = 0.0
687 state.overlay_enabled = true
688 state.overlay_alpha_src = 1.0
689 state.overlay_alpha_dst = 1.0
693 state.overlay_transition_start = t
694 state.overlay_transition_end = t + 1.0
695 if state.overlay_enabled then
696 state.overlay_alpha_src = 1.0
697 state.overlay_alpha_dst = 0.0
699 state.overlay_alpha_src = 0.0
700 state.overlay_alpha_dst = 1.0
702 state.overlay_enabled = true
709 if in_transition(t) then
710 -- Ongoing transition; finish it immediately before the cut.
711 finish_transitions(state.transition_end)
715 state.stinger_in_progress = false
718 finish_transitions(t)
720 if state.live_signal_num == state.preview_signal_num then
725 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
726 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
728 if stinger_in_progress then
732 state.stinger_in_progress = true
733 state.stinger_frame = 0
734 state.stinger_src_signal = state.live_signal_num
735 state.stinger_dst_signal = state.preview_signal_num
739 if is_plain_signal(state.live_signal_num) and is_plain_signal(state.preview_signal_num) then
740 -- We can't zoom between these. Just make a cut.
741 io.write("Cutting from " .. state.live_signal_num .. " to " .. state.live_signal_num .. "\n")
743 state.stinger_in_progress = false
747 if (state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num)) or
748 (state.preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.live_signal_num)) then
749 start_transition(ZOOM_TRANSITION, t, 1.0)
752 finish_transitions(t)
755 if (state.live_signal_num ~= state.preview_signal_num) and
756 (is_plain_signal(state.live_signal_num) or
757 state.live_signal_num == STATIC_SIGNAL_NUM) and
758 (is_plain_signal(state.preview_signal_num) or
759 state.preview_signal_num == STATIC_SIGNAL_NUM) then
760 start_transition(FADE_TRANSITION, t, 1.0)
762 -- Fades involving SBS are ignored (we have no chain for it).
768 function channel_clicked(num)
769 state.preview_signal_num = num
772 function get_fade_chain(state, signals, t, width, height, input_resolution)
773 local input0_type = get_input_type(signals, state.transition_src_signal)
774 local input0_scale = needs_scale(signals, state.transition_src_signal, width, height)
775 local input1_type = get_input_type(signals, state.transition_dst_signal)
776 local input1_scale = needs_scale(signals, state.transition_dst_signal, width, height)
777 local chain = fade_chains[input0_type][input0_scale][input1_type][input1_scale][state.overlay_enabled][true]
778 local prepare = function()
779 if input0_type == "live" or input0_type == "livedeint" then
780 chain.input0.input:connect_signal(state.transition_src_signal)
782 if input0_type ~= "static" then
783 set_neutral_color_from_signal(state, chain.input0.wb_effect, state.transition_src_signal)
785 set_scale_parameters_if_needed(chain.input0, width, height)
786 if input1_type == "live" or input1_type == "livedeint" then
787 chain.input1.input:connect_signal(state.transition_dst_signal)
789 if input1_type ~= "static" then
790 set_neutral_color_from_signal(state, chain.input1.wb_effect, state.transition_dst_signal)
792 set_scale_parameters_if_needed(chain.input1, width, height)
793 local tt = calc_fade_progress(t, state.transition_start, state.transition_end)
795 chain.mix_effect:set_float("strength_first", 1.0 - tt)
796 chain.mix_effect:set_float("strength_second", tt)
798 -- The commentator output has no overlay on it.
799 local extra_alpha_factor = 1.0
800 if not simple_signal_has_overlay(state.transition_src_signal) and
801 not simple_signal_has_overlay(state.transition_dst_signal) then
802 extra_alpha_factor = 0.0
803 elseif not simple_signal_has_overlay(state.transition_src_signal) then
804 extra_alpha_factor = tt
805 elseif not simple_signal_has_overlay(state.transition_dst_signal) then
806 extra_alpha_factor = 1.0 - tt
808 prepare_overlay_live(state, chain, t, extra_alpha_factor)
810 return chain.chain, prepare
813 -- SBS code (live_signal_num == SBS_SIGNAL_NUM, or in a transition to/from it).
814 function get_sbs_chain(state, signals)
815 local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM)
816 local input1_type = get_input_type(signals, INPUT4_SIGNAL_NUM)
817 return sbs_chains[input0_type][state.overlay_enabled][input1_type][true]
820 function fetch_input_resolution(signals, signal_num)
822 width = signals:get_width(signal_num),
823 height = signals:get_height(signal_num),
824 interlaced = signals:get_interlaced(signal_num),
825 has_signal = signals:get_has_signal(signal_num),
826 is_connected = signals:get_is_connected(signal_num),
827 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
828 frame_rate_den = signals:get_frame_rate_den(signal_num),
829 last_subtitle = signals:get_last_subtitle(signal_num)
832 if res.interlaced then
833 -- Convert height from frame height to field height.
834 -- (Needed for e.g. place_rectangle.)
835 res.height = res.height * 2
837 -- Show field rate instead of frame rate; really for cosmetics only
838 -- (and actually contrary to EBU recommendations, although in line
839 -- with typical user expectations).
840 res.frame_rate_nom = res.frame_rate_nom * 2
845 local last_rate = 0.0
848 -- Called every frame. Get the chain for displaying at input <num>,
849 -- where 0 is live, 1 is preview, 2 is the first channel to display
850 -- in the bottom bar, and so on up to num_channels()+1. t is the
851 -- current time in seconds. width and height are the dimensions of
852 -- the output, although you can ignore them if you don't need them
853 -- (they're useful if you want to e.g. know what to resample by).
855 -- <signals> is basically an exposed InputState, which you can use to
856 -- query for information about the signals at the point of the current
857 -- frame. In particular, you can call get_width() and get_height()
858 -- for any signal number, and use that to e.g. assist in chain selection.
860 -- You should return two objects; the chain itself, and then a
861 -- function (taking no parameters) that is run just before rendering.
862 -- The function needs to call connect_signal on any inputs, so that
863 -- it gets updated video data for the given frame. (You are allowed
864 -- to switch which input your input is getting from between frames,
865 -- but not calling connect_signal results in undefined behavior.)
866 -- If you want to change any parameters in the chain, this is also
869 -- NOTE: The chain returned must be finalized with the Y'CbCr flag
870 -- if and only if num==0.
871 function get_chain(num, t, width, height, signals)
872 local input_resolution = {}
873 for signal_num=0,(NUM_CAMERAS-1) do
874 input_resolution[signal_num] = fetch_input_resolution(signals, signal_num)
876 input_resolution[iptv_video:get_signal_num()] = fetch_input_resolution(signals, iptv_video:get_signal_num())
877 last_resolution = input_resolution
879 -- Make a (semi-shallow) copy of the current state, so that the returned prepare function
880 -- is unaffected by state changes made by the UI before it is rendered.
881 local state_copy = {}
882 for key, value in pairs(state) do
883 state_copy[key] = value
885 for key, value in pairs(state.neutral_colors) do
886 state_copy.neutral_colors[key] = value
889 -- Save some CPU time if we're not having SBS on live.
891 if state.live_signal_num == SBS_SIGNAL_NUM or
892 state.preview_signal_num == SBS_SIGNAL_NUM or
893 state.transition_type == ZOOM_TRANSITION then
898 if new_rate ~= last_rate then
899 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
900 bg_video:change_rate(new_rate)
904 if num == 0 then -- Live.
905 -- See if we're in a transition.
906 finish_transitions(t)
907 if state.transition_type == ZOOM_TRANSITION then
908 -- Transition in or out of SBS.
909 local chain = get_sbs_chain(state_copy, signals)
910 local prepare = function()
911 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)
912 prepare_overlay_live(state_copy, chain, t, 1.0)
914 return chain.chain, prepare
915 elseif state.transition_type == NO_TRANSITION and state.live_signal_num == SBS_SIGNAL_NUM then
917 local chain = get_sbs_chain(state_copy, signals)
918 local prepare = function()
919 prepare_sbs_chain(state_copy, chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution)
920 prepare_overlay_live(state_copy, chain, t, 1.0)
922 return chain.chain, prepare
923 elseif state.transition_type == FADE_TRANSITION then
924 return get_fade_chain(state_copy, signals, t, width, height, input_resolution)
925 elseif is_plain_signal(state.live_signal_num) then
926 local input_type = get_input_type(signals, state.live_signal_num)
927 local input_scale = needs_scale(signals, state.live_signal_num, width, height)
928 local overlay_really_enabled = state.overlay_enabled and simple_signal_has_overlay(state.live_signal_num)
930 if state.stinger_in_progress then
931 chain = stinger_chains[input_type][input_scale][overlay_really_enabled][state.stinger_frame][true]
932 state.stinger_frame = state.stinger_frame + 1
933 if state.stinger_frame >= 25 then
934 state.stinger_in_progress = false
935 state.preview_signal_num = state.stinger_src_signal
936 state.live_signal_num = state.stinger_dst_signal
938 if state.stinger_dst_signal == VIDEO_SIGNAL_NUM then
939 -- Turn off the overlay when playing video.
940 state.stinger_save_overlay = state.overlay_enabled
941 state.overlay_enabled = false
943 -- Restore the state.
944 state.overlay_enabled = state.stinger_save_overlay
948 chain = simple_chains[input_type][input_scale][overlay_really_enabled][true]
950 local prepare = function()
951 if input_type ~= "video" then
952 chain.input:connect_signal(state.live_signal_num)
954 set_neutral_color_from_signal(state_copy, chain.wb_effect, state.live_signal_num)
955 set_scale_parameters_if_needed(chain, width, height)
956 prepare_overlay_live(state_copy, chain, t, 1.0)
958 return chain.chain, prepare
959 elseif state.live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
960 local chain = static_chains[true]
961 local prepare = function()
962 prepare_overlay_live(state_copy, chain, t, 1.0) -- FIXME: Should this ever be here?
964 return chain.chain, prepare
970 -- We do not show overlays on the individual preview inputs.
971 -- The M/E preview matches what we'd put live by doing a transition, as always.
972 local show_overlay = false
973 if num == 1 then -- Preview.
974 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
975 num = state.live_signal_num + 2
976 show_overlay = not state.overlay_enabled
978 if state.transition_type ~= NO_TRANSITION then
979 num = state.transition_dst_signal + 2
982 num = state.preview_signal_num + 2
983 show_overlay = state.overlay_enabled and simple_signal_has_overlay(state.preview_signal_num)
987 -- Individual preview inputs (usually without overlay).
988 if is_plain_signal(num - 2) then
989 local signal_num = num - 2
990 local input_type = get_input_type(signals, signal_num)
991 local input_scale = needs_scale(signals, signal_num, width, height)
992 local chain = simple_chains[input_type][input_scale][show_overlay][false]
993 local prepare = function()
994 if input_type ~= "video" then
995 chain.input:connect_signal(signal_num)
997 set_neutral_color(chain.wb_effect, state_copy.neutral_colors[signal_num + 1])
998 set_scale_parameters_if_needed(chain, width, height)
999 prepare_overlay_static(chain, t)
1001 return chain.chain, prepare
1003 if num == SBS_SIGNAL_NUM + 2 then
1004 local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM)
1005 local input1_type = get_input_type(signals, INPUT4_SIGNAL_NUM)
1006 local chain = sbs_chains[input0_type][show_overlay][input1_type][false]
1007 local prepare = function()
1008 prepare_sbs_chain(state_copy, chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution)
1010 return chain.chain, prepare
1012 if num == STATIC_SIGNAL_NUM + 2 then
1013 local chain = static_chains[false]
1014 local prepare = function()
1015 prepare_overlay_static(chain, t)
1017 return chain.chain, prepare
1019 if num == OVERLAY_SIGNAL_NUM + 2 then
1020 local prepare = function()
1021 -- prepare_overlay(overlay_chain_lq, t)
1023 return overlay_chain_lq, prepare
1027 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
1029 return math.floor(x + 0.5)
1032 function lerp(a, b, t)
1033 return a + (b - a) * t
1036 function lerp_pos(a, b, t)
1038 x0 = lerp(a.x0, b.x0, t),
1039 y0 = lerp(a.y0, b.y0, t),
1040 x1 = lerp(a.x1, b.x1, t),
1041 y1 = lerp(a.y1, b.y1, t)
1045 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
1046 local xs = screen_width / 1280.0
1047 local ys = screen_height / 720.0
1051 x1 = round(xs * (x + width)),
1052 y1 = round(ys * (y + height))
1056 function prepare_sbs_chain(state, chain, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution)
1057 chain.input0.input:connect_signal(0)
1058 chain.input1.input:connect_signal(4)
1059 set_neutral_color(chain.input0.wb_effect, state.neutral_colors[1])
1060 set_neutral_color(chain.input1.wb_effect, state.neutral_colors[5])
1062 -- Both inputs are the same size (true side-by-side).
1063 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
1064 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
1066 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
1068 if transition_type == NO_TRANSITION then
1070 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
1072 -- Zooming to/from SBS view into or out of a single view.
1073 assert(transition_type == ZOOM_TRANSITION)
1074 local signal, real_t
1075 if src_signal == SBS_SIGNAL_NUM then
1079 assert(dst_signal == SBS_SIGNAL_NUM)
1084 if signal == INPUT0_SIGNAL_NUM then
1085 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
1086 elseif signal == INPUT4_SIGNAL_NUM then
1087 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
1091 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
1092 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)
1093 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)
1096 -- Find the transformation that changes the first rectangle to the second one.
1097 function find_affine_param(a, b)
1098 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
1099 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
1103 tx = b.x0 - a.x0 * sx,
1104 ty = b.y0 - a.y0 * sy
1108 function place_rectangle_with_affine(resample_effect, resize_effect, padding_effect, pos, aff, screen_width, screen_height, input_width, input_height)
1109 local x0 = pos.x0 * aff.sx + aff.tx
1110 local x1 = pos.x1 * aff.sx + aff.tx
1111 local y0 = pos.y0 * aff.sy + aff.ty
1112 local y1 = pos.y1 * aff.sy + aff.ty
1114 place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height)
1117 function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height)
1123 padding_effect:set_int("width", screen_width)
1124 padding_effect:set_int("height", screen_height)
1127 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
1128 if resample_effect ~= nil then
1129 resample_effect:set_int("width", 1)
1130 resample_effect:set_int("height", 1)
1131 resample_effect:set_float("zoom_x", screen_width)
1132 resample_effect:set_float("zoom_y", screen_height)
1134 resize_effect:set_int("width", 1)
1135 resize_effect:set_int("height", 1)
1137 padding_effect:set_int("left", screen_width + 100)
1138 padding_effect:set_int("top", screen_height + 100)
1144 srcx0 = -x0 / (x1 - x0)
1148 srcy0 = -y0 / (y1 - y0)
1151 if x1 > screen_width then
1152 srcx1 = (screen_width - x0) / (x1 - x0)
1155 if y1 > screen_height then
1156 srcy1 = (screen_height - y0) / (y1 - y0)
1160 if resample_effect ~= nil then
1161 -- High-quality resampling.
1162 local x_subpixel_offset = x0 - math.floor(x0)
1163 local y_subpixel_offset = y0 - math.floor(y0)
1165 -- Resampling must be to an integral number of pixels. Round up,
1166 -- and then add an extra pixel so we have some leeway for the border.
1167 local width = math.ceil(x1 - x0) + 1
1168 local height = math.ceil(y1 - y0) + 1
1169 resample_effect:set_int("width", width)
1170 resample_effect:set_int("height", height)
1172 -- Correct the discrepancy with zoom. (This will leave a small
1173 -- excess edge of pixels and subpixels, which we'll correct for soon.)
1174 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
1175 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
1176 resample_effect:set_float("zoom_x", zoom_x)
1177 resample_effect:set_float("zoom_y", zoom_y)
1178 resample_effect:set_float("zoom_center_x", 0.0)
1179 resample_effect:set_float("zoom_center_y", 0.0)
1181 -- Padding must also be to a whole-pixel offset.
1182 padding_effect:set_int("left", math.floor(x0))
1183 padding_effect:set_int("top", math.floor(y0))
1185 -- Correct _that_ discrepancy by subpixel offset in the resampling.
1186 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
1187 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
1189 -- Finally, adjust the border so it is exactly where we want it.
1190 padding_effect:set_float("border_offset_left", x_subpixel_offset)
1191 padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1192 padding_effect:set_float("border_offset_top", y_subpixel_offset)
1193 padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1195 -- Lower-quality simple resizing.
1196 local width = round(x1 - x0)
1197 local height = round(y1 - y0)
1198 resize_effect:set_int("width", width)
1199 resize_effect:set_int("height", height)
1201 -- Padding must also be to a whole-pixel offset.
1202 padding_effect:set_int("left", math.floor(x0))
1203 padding_effect:set_int("top", math.floor(y0))
1207 function prepare_overlay_live(state, chain, t, extra_alpha_factor)
1208 if chain.overlay then
1209 local tt = calc_fade_progress(t, state.overlay_transition_start, state.overlay_transition_end)
1210 local overlay_alpha = state.overlay_alpha_src + tt * (state.overlay_alpha_dst - state.overlay_alpha_src)
1211 overlay_alpha = overlay_alpha * extra_alpha_factor
1212 --print("overlay_alpha=" .. overlay_alpha .. " [" .. state.overlay_alpha_src .. "," .. state.overlay_alpha_dst .. "]@" .. tt)
1213 if t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
1214 state.overlay_enabled = false -- Takes effect next frame.
1215 -- print("Turning off overlay")
1217 chain.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1221 function prepare_overlay_static(chain)
1222 if chain.overlay then
1223 chain.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1227 function set_neutral_color(effect, color)
1228 effect:set_vec3("neutral_color", color[1], color[2], color[3])
1231 function set_neutral_color_from_signal(state, effect, signal)
1232 if is_plain_signal(signal) then
1233 set_neutral_color(effect, state.neutral_colors[signal - INPUT0_SIGNAL_NUM + 1])
1237 function calc_zoom_progress(t)
1238 if t < state.transition_start then
1240 elseif t > state.transition_end then
1243 local tt = (t - state.transition_start) / (state.transition_end - state.transition_start)
1245 return math.sin(tt * 3.14159265358 * 0.5)
1249 function calc_fade_progress(t, transition_start, transition_end)
1250 local tt = (t - transition_start) / (transition_end - transition_start)
1253 elseif tt > 1.0 then
1257 -- Make the fade look maybe a tad more natural, by pumping it
1258 -- through a sigmoid function.
1259 tt = 10.0 * tt - 5.0
1260 tt = 1.0 / (1.0 + math.exp(-tt))
1266 { "Reload overlay", reload_cef },
1267 { "Disconnect IPTV", disconnect_iptv }