1 -- Nageru theme for ultimate productions, based on the default theme.
3 local transition_start = -2.0
4 local transition_end = -1.0
5 local transition_type = 0
6 local transition_src_signal = 0
7 local transition_dst_signal = 0
9 local neutral_colors = {
10 {0.5, 0.5, 0.5}, -- Input 0.
11 {0.5, 0.5, 0.5}, -- Input 1.
12 {0.5, 0.5, 0.5}, -- Input 2.
13 {0.5, 0.5, 0.5}, -- Input 3.
14 {0.5, 0.5, 0.5}, -- Input 4.
15 {0.5, 0.5, 0.5} -- Input 5.
18 local overlay_transition_start = -2.0
19 local overlay_transition_end = -1.0
20 local overlay_alpha_src = 0.0
21 local overlay_alpha_dst = 1.0
22 local overlay_enabled = false
24 local live_signal_num = 0
25 local preview_signal_num = 1
26 local NUM_CAMERAS = 6 -- Remember to update neutral_colors, too.
28 -- Valid values for live_signal_num and preview_signal_num.
29 local INPUT0_SIGNAL_NUM = 0
30 local INPUT1_SIGNAL_NUM = 1
31 local INPUT2_SIGNAL_NUM = 2
32 local INPUT3_SIGNAL_NUM = 3
33 local INPUT4_SIGNAL_NUM = 4
34 local INPUT5_SIGNAL_NUM = 5
35 local SBS_SIGNAL_NUM = NUM_CAMERAS
36 local STATIC_SIGNAL_NUM = NUM_CAMERAS + 1
37 local VIDEO_SIGNAL_NUM = NUM_CAMERAS + 2
39 -- Preview-only signal showing the current signal with the overlay.
40 -- Not valid for live_signal_num!
41 local OVERLAY_SIGNAL_NUM = NUM_CAMERAS + 3
43 -- Valid values for transition_type. (Cuts are done directly, so they need no entry.)
44 local NO_TRANSITION = 0
45 local ZOOM_TRANSITION = 1
46 local FADE_TRANSITION = 2
48 -- Last width/height/frame rate for each channel, if we have it.
49 -- Note that unlike the values we get from Nageru, the resolution is per
50 -- frame and not per field, since we deinterlace.
51 local last_resolution = {}
53 local cef_path = Nageru.THEME_PATH:match("(.*)/nageru/")
54 local cef_input = HTMLInput.new("file://" .. cef_path .. "/score.html")
55 cef_input:execute_javascript_async("play()")
57 local bg_video = VideoInput.new(cef_path .. "/flow-720.mp4", Nageru.VIDEO_FORMAT_YCBCR)
58 -- local iptv_video = VideoInput.new("http://10.34.129.69:9060/1/v.flv", Nageru.VIDEO_FORMAT_YCBCR)
59 local iptv_video = VideoInput.new("http://home.samfundet.no/~sesse/videostuff", Nageru.VIDEO_FORMAT_YCBCR)
63 cef_input:execute_javascript_async("play()")
66 function disconnect_iptv()
67 iptv_video:disconnect()
70 -- Utility function to help creating many similar chains that can differ
71 -- in a free set of chosen parameters.
72 function make_cartesian_product(parms, callback)
73 return make_cartesian_product_internal(parms, callback, 1, {})
76 function make_cartesian_product_internal(parms, callback, index, args)
77 if index > #parms then
78 return callback(unpack(args))
81 for _, value in ipairs(parms[index]) do
83 ret[value] = make_cartesian_product_internal(parms, callback, index + 1, args)
88 -- An overlay with variable alpha.
89 function make_overlay(chain, base)
90 local image = chain:add_html_input(cef_input)
91 local multiply_effect = chain:add_effect(MultiplyEffect.new())
92 local overlay_effect = chain:add_effect(OverlayEffect.new(), base, multiply_effect)
95 multiply_effect = multiply_effect,
96 overlay_effect = overlay_effect
100 function possibly_make_overlay(has_overlay, chain, base)
101 if has_overlay == true then
102 return make_overlay(chain, base)
108 function make_fade_input(chain, signal, live, deint, scale, video)
109 local input, wb_effect, resample_effect, last
111 input = chain:add_video_input(iptv_video, false)
114 input = chain:add_live_input(false, deint)
115 input:connect_signal(signal)
118 input = chain:add_effect(ImageInput.new(cef_path .. "/nageru/dsn-bg.png"))
122 -- If we cared about this for the non-main inputs, we would have
123 -- checked hq here and invoked ResizeEffect instead.
125 resample_effect = chain:add_effect(ResampleEffect.new())
126 last = resample_effect
129 -- Make sure to put the white balance after the scaling (usually more efficient).
131 wb_effect = chain:add_effect(WhiteBalanceEffect.new())
137 wb_effect = wb_effect,
138 resample_effect = resample_effect,
143 -- A chain to fade between two inputs, of which either can be a picture
144 -- or a live input. In practice only used live, but we still support the
146 function make_fade_chain(input0_live, input0_deint, input0_scale, input0_video, input1_live, input1_deint, input1_scale, input1_video, has_overlay, hq)
147 local chain = EffectChain.new(16, 9)
149 local input0 = make_fade_input(chain, INPUT0_SIGNAL_NUM, input0_live, input0_deint, input0_scale, input0_video)
150 local input1 = make_fade_input(chain, INPUT1_SIGNAL_NUM, input1_live, input1_deint, input1_scale, input1_video)
152 -- If fading between two live inputs, the overlay is put on top.
153 -- If fading between the static picture and a live input,
154 -- the overlay is put on the live input.
156 if input0_live and not input1_live then
157 overlay = possibly_make_overlay(has_overlay, chain, input0.last)
159 input0.last = overlay.overlay_effect
161 elseif input1_live and not input0_live then
162 overlay = possibly_make_overlay(has_overlay, chain, input1.last)
164 input1.last = overlay.overlay_effect
168 local mix_effect = chain:add_effect(MixEffect.new(), input0.last, input1.last)
169 if input0_live and input1_live then
170 overlay = possibly_make_overlay(has_overlay, chain, mix_effect)
179 mix_effect = mix_effect,
184 -- Chains to fade between two inputs, in various configurations.
185 local fade_chains = make_cartesian_product({
186 {"video", "static", "live", "livedeint"}, -- input0_type
187 {true, false}, -- input0_scale
188 {"video", "static", "live", "livedeint"}, -- input1_type
189 {true, false}, -- input1_scale
190 {true, false}, -- has_overlay
192 }, function(input0_type, input0_scale, input1_type, input1_scale, has_overlay, hq)
193 local input0_live = (input0_type ~= "static")
194 local input1_live = (input1_type ~= "static")
195 local input0_deint = (input0_type == "livedeint")
196 local input1_deint = (input1_type == "livedeint")
197 local input0_video = (input0_type == "video")
198 local input1_video = (input1_type == "video")
199 return make_fade_chain(input0_live, input0_deint, input0_scale, input0_video, input1_live, input1_deint, input1_scale, input1_video, has_overlay, hq)
202 function make_sbs_input(chain, signal, deint, has_overlay, hq)
203 local input = chain:add_live_input(not deint, deint) -- Override bounce only if not deinterlacing.
204 input:connect_signal(signal)
208 overlay = make_overlay(chain, input)
211 local resample_effect = nil
212 local resize_effect = nil
214 resample_effect = chain:add_effect(ResampleEffect.new())
216 resize_effect = chain:add_effect(ResizeEffect.new())
218 local wb_effect = chain:add_effect(WhiteBalanceEffect.new())
220 local padding_effect = chain:add_effect(IntegralPaddingEffect.new())
224 wb_effect = wb_effect,
225 resample_effect = resample_effect,
226 resize_effect = resize_effect,
227 padding_effect = padding_effect,
232 -- Side-by-side chains.
233 function make_sbs_chain(input0_type, input0_overlay, input1_type, hq)
234 local chain = EffectChain.new(16, 9)
236 local bg = chain:add_video_input(bg_video, false)
238 local input0 = make_sbs_input(chain, INPUT0_SIGNAL_NUM, input0_type == "livedeint", input0_overlay, hq)
239 local input1 = make_sbs_input(chain, INPUT4_SIGNAL_NUM, input1_type == "livedeint", false, hq)
241 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
242 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
244 local i0 = chain:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
245 chain:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
252 overlay = input0.overlay -- May be nil.
257 -- Make all possible combinations of side-by-side chains.
258 local sbs_chains = make_cartesian_product({
259 {"live", "livedeint"}, -- input0_type
260 {true, false}, -- input0_overlay
261 {"live", "livedeint"}, -- input1_type
263 }, function(input0_type, input0_overlay, input1_type, hq)
264 return make_sbs_chain(input0_type, input0_overlay, input1_type, hq)
267 -- A chain to show a single input on screen.
268 function make_simple_chain(input_deint, input_video, input_scale, has_overlay, hq)
269 local chain = EffectChain.new(16, 9)
273 input = chain:add_video_input(iptv_video, false)
275 input = chain:add_live_input(false, input_deint)
277 input:connect_signal(0) -- First input card. Can be changed whenever you want.
279 local resample_effect, resize_effect
282 resample_effect = chain:add_effect(ResampleEffect.new())
284 resize_effect = chain:add_effect(ResizeEffect.new())
288 local wb_effect = chain:add_effect(WhiteBalanceEffect.new())
289 local overlay = possibly_make_overlay(has_overlay, chain, wb_effect)
296 wb_effect = wb_effect,
297 resample_effect = resample_effect,
298 resize_effect = resize_effect,
303 -- Make all possible combinations of single-input chains.
304 local simple_chains = make_cartesian_product({
305 {"video", "live", "livedeint"}, -- input_type
306 {true, false}, -- input_scale
307 {true, false}, -- has_overlay
309 }, function(input_type, input_scale, has_overlay, hq)
310 local input_deint = (input_type == "livedeint")
311 local input_video = (input_type == "video")
312 return make_simple_chain(input_deint, input_video, input_scale, has_overlay, hq)
315 -- A chain to show a single static picture on screen. Never with HTML overlay.
316 local static_chains = make_cartesian_product({
319 local chain = EffectChain.new(16, 9)
320 local chain_input = chain:add_effect(ImageInput.new(cef_path .. "/nageru/dsn-bg.png"))
328 -- A chain to show the overlay and nothing more. LQ only,
329 -- since it is not a valid live signal.
330 local overlay_chain_lq = EffectChain.new(16, 9)
331 local overlay_chain_lq_input = overlay_chain_lq:add_html_input(cef_input)
332 overlay_chain_lq:finalize(false)
334 -- Used for indexing into the tables of chains.
335 function get_input_type(signals, signal_num)
336 if signal_num == STATIC_SIGNAL_NUM then
338 elseif signal_num == VIDEO_SIGNAL_NUM then
340 elseif signals:get_interlaced(signal_num) then
347 function needs_scale(signals, signal_num, width, height)
348 if signal_num == STATIC_SIGNAL_NUM then
349 -- We assume this is already correctly scaled at load time.
352 assert(is_plain_signal(signal_num))
353 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
356 function set_scale_parameters_if_needed(chain_or_input, width, height)
357 if chain_or_input.resample_effect then
358 chain_or_input.resample_effect:set_int("width", width)
359 chain_or_input.resample_effect:set_int("height", height)
360 elseif chain_or_input.resize_effect then
361 chain_or_input.resize_effect:set_int("width", width)
362 chain_or_input.resize_effect:set_int("height", height)
367 -- Returns the number of outputs in addition to the live (0) and preview (1).
368 -- Called only once, at the start of the program.
369 function num_channels()
370 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
373 function is_plain_signal(num)
374 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT5_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
377 -- Helper function to write e.g. “720p60”. The difference between this
378 -- and get_channel_resolution_raw() is that this one also can say that
379 -- there's no signal.
380 function get_channel_resolution(signal_num)
381 res = last_resolution[signal_num]
382 if (not res) or not res.is_connected then
383 return "disconnected"
385 if res.height <= 0 then
388 if not res.has_signal then
389 if res.height == 525 then
390 -- Special mode for the USB3 cards.
393 return get_channel_resolution_raw(res) .. ", no signal"
395 return get_channel_resolution_raw(res)
399 -- Helper function to write e.g. “60” or “59.94”.
400 function get_frame_rate(res)
401 local nom = res.frame_rate_nom
402 local den = res.frame_rate_den
403 if nom % den == 0 then
406 return string.format("%.2f", nom / den)
410 -- Helper function to write e.g. “720p60”.
411 function get_channel_resolution_raw(res)
412 if res.interlaced then
413 return res.height .. "i" .. get_frame_rate(res)
415 return res.height .. "p" .. get_frame_rate(res)
420 -- Returns the name for each additional channel (starting from 2).
421 -- Called at the start of the program, and then each frame for live
422 -- channels in case they change resolution.
423 function channel_name(channel)
424 local signal_num = channel - 2
425 if signal_num == INPUT0_SIGNAL_NUM then
426 return "Main (" .. get_channel_resolution(signal_num) .. ")"
427 elseif signal_num == INPUT1_SIGNAL_NUM then
428 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
429 elseif signal_num == INPUT2_SIGNAL_NUM then
430 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
431 elseif signal_num == INPUT3_SIGNAL_NUM then
432 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
433 elseif signal_num == INPUT4_SIGNAL_NUM then
434 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
435 elseif signal_num == INPUT5_SIGNAL_NUM then
436 return "Laptop (" .. get_channel_resolution(signal_num) .. ")"
437 elseif signal_num == SBS_SIGNAL_NUM then
438 return "Side-by-side"
439 elseif signal_num == STATIC_SIGNAL_NUM then
440 return "Static picture"
441 elseif signal_num == VIDEO_SIGNAL_NUM then
443 elseif signal_num == OVERLAY_SIGNAL_NUM then
449 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
450 -- Should return -1 if the channel does not correspond to a simple signal.
451 -- (The information is used for whether right-click on the channel should bring up
452 -- an input selector or not.)
453 -- Called once for each channel, at the start of the program.
454 -- Will never be called for live (0) or preview (1).
455 function channel_signal(channel)
456 if channel - 2 == VIDEO_SIGNAL_NUM then
457 return iptv_video:get_signal_num()
458 elseif is_plain_signal(channel - 2) then
466 -- Called every frame. Returns the color (if any) to paint around the given
467 -- channel. Returns a CSS color (typically to mark live and preview signals);
468 -- "transparent" is allowed.
469 -- Will never be called for live (0) or preview (1).
470 function channel_color(channel)
471 if transition_type ~= NO_TRANSITION then
472 if channel_involved_in(channel, transition_src_signal) or
473 channel_involved_in(channel, transition_dst_signal) then
477 if channel_involved_in(channel, live_signal_num) then
481 if channel_involved_in(channel, preview_signal_num) then
487 function channel_involved_in(channel, signal_num)
488 if is_plain_signal(signal_num) then
489 return channel == (signal_num + 2)
491 if signal_num == SBS_SIGNAL_NUM then
492 return is_sbs_participating_signal(channel - 2)
494 if signal_num == STATIC_SIGNAL_NUM then
495 return (channel == NUM_CAMERAS)
497 if signal_num == VIDEO_SIGNAL_NUM then
498 return (channel == NUM_CAMERAS + 1)
504 -- Returns if a given channel supports setting white balance (starting from 2).
505 -- Called only once for each channel, at the start of the program.
506 function supports_set_wb(channel)
507 return is_plain_signal(channel - 2)
511 -- Gets called with a new gray point when the white balance is changing.
512 -- The color is in linear light (not sRGB gamma).
513 function set_wb(channel, red, green, blue)
514 if is_plain_signal(channel - 2) then
515 neutral_colors[channel - 2 + 1] = { red, green, blue }
519 function finish_transitions(t)
520 if transition_type ~= NO_TRANSITION and t >= transition_end then
521 live_signal_num = transition_dst_signal
522 transition_type = NO_TRANSITION
525 -- Disable the overlay if it is no longer visible.
526 if overlay_enabled and t > overlay_transition_end and overlay_alpha_dst == 0.0 then
527 overlay_enabled = false
528 print("Turning off overlay")
532 function in_transition(t)
533 return t >= transition_start and t <= transition_end
536 function is_sbs_participating_signal(signal_num)
537 return signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT4_SIGNAL_NUM
540 function simple_signal_has_overlay(signal_num)
541 -- The commentator output has no overlay on it.
542 return signal_num ~= INPUT4_SIGNAL_NUM
546 -- Called every frame.
547 function get_transitions(t)
548 if preview_signal_num == OVERLAY_SIGNAL_NUM then
549 if t < overlay_transition_end then
553 if overlay_enabled then
554 return {"Overlay off", "", "Fade ovl out"}
556 return {"Overlay on", "", "Fade ovl in"}
560 if in_transition(t) then
561 -- Transition already in progress, the only thing we can do is really
562 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
566 if live_signal_num == preview_signal_num then
567 -- No transitions possible.
571 if (is_plain_signal(live_signal_num) or live_signal_num == STATIC_SIGNAL_NUM) and
572 (is_plain_signal(preview_signal_num) or preview_signal_num == STATIC_SIGNAL_NUM) then
573 return {"Cut", "", "Fade"}
577 if live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(preview_signal_num) then
578 return {"Cut", "Zoom in"}
579 elseif is_sbs_participating_signal(live_signal_num) and preview_signal_num == SBS_SIGNAL_NUM then
580 return {"Cut", "Zoom out"}
586 function swap_preview_live()
587 local temp = live_signal_num
588 live_signal_num = preview_signal_num
589 preview_signal_num = temp
592 function start_transition(type_, t, duration)
594 transition_end = t + duration
595 transition_type = type_
596 transition_src_signal = live_signal_num
597 transition_dst_signal = preview_signal_num
602 -- Called when the user clicks a transition button.
603 function transition_clicked(num, t)
604 if preview_signal_num == OVERLAY_SIGNAL_NUM then
607 overlay_transition_start = -2.0
608 overlay_transition_end = -1.0
609 if overlay_enabled then
610 overlay_enabled = false
611 overlay_alpha_src = 0.0
612 overlay_alpha_dst = 0.0
614 overlay_enabled = true
615 overlay_alpha_src = 1.0
616 overlay_alpha_dst = 1.0
620 overlay_transition_start = t
621 overlay_transition_end = t + 1.0
622 if overlay_enabled then
623 overlay_alpha_src = 1.0
624 overlay_alpha_dst = 0.0
626 overlay_alpha_src = 0.0
627 overlay_alpha_dst = 1.0
629 overlay_enabled = true
636 if in_transition(t) then
637 -- Ongoing transition; finish it immediately before the cut.
638 finish_transitions(transition_end)
644 finish_transitions(t)
646 if live_signal_num == preview_signal_num then
651 if is_plain_signal(live_signal_num) and is_plain_signal(preview_signal_num) then
652 -- We can't zoom between these. Just make a cut.
653 io.write("Cutting from " .. live_signal_num .. " to " .. live_signal_num .. "\n")
658 if (live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(preview_signal_num)) or
659 (preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(live_signal_num)) then
660 start_transition(ZOOM_TRANSITION, t, 1.0)
663 finish_transitions(t)
666 if (live_signal_num ~= preview_signal_num) and
667 (is_plain_signal(live_signal_num) or
668 live_signal_num == STATIC_SIGNAL_NUM) and
669 (is_plain_signal(preview_signal_num) or
670 preview_signal_num == STATIC_SIGNAL_NUM) then
671 start_transition(FADE_TRANSITION, t, 1.0)
673 -- Fades involving SBS are ignored (we have no chain for it).
679 function channel_clicked(num)
680 preview_signal_num = num
683 function get_fade_chain(signals, t, width, height, input_resolution)
684 local input0_type = get_input_type(signals, transition_src_signal)
685 local input0_scale = needs_scale(signals, transition_src_signal, width, height)
686 local input1_type = get_input_type(signals, transition_dst_signal)
687 local input1_scale = needs_scale(signals, transition_dst_signal, width, height)
688 local chain = fade_chains[input0_type][input0_scale][input1_type][input1_scale][overlay_enabled][true]
690 if input0_type == "live" or input0_type == "livedeint" then
691 chain.input0.input:connect_signal(transition_src_signal)
692 set_neutral_color_from_signal(chain.input0.wb_effect, transition_src_signal)
694 set_scale_parameters_if_needed(chain.input0, width, height)
695 if input1_type == "live" or input1_type == "livedeint" then
696 chain.input1.input:connect_signal(transition_dst_signal)
697 set_neutral_color_from_signal(chain.input1.wb_effect, transition_dst_signal)
699 set_scale_parameters_if_needed(chain.input1, width, height)
700 local tt = calc_fade_progress(t, transition_start, transition_end)
702 chain.mix_effect:set_float("strength_first", 1.0 - tt)
703 chain.mix_effect:set_float("strength_second", tt)
705 -- The commentator output has no overlay on it.
706 local extra_alpha_factor = 1.0
707 if not simple_signal_has_overlay(transition_src_signal) and
708 not simple_signal_has_overlay(transition_dst_signal) then
709 extra_alpha_factor = 0.0
710 elseif not simple_signal_has_overlay(transition_src_signal) then
711 extra_alpha_factor = tt
712 elseif not simple_signal_has_overlay(transition_dst_signal) then
713 extra_alpha_factor = 1.0 - tt
715 prepare_overlay_live(chain, t, extra_alpha_factor)
717 return chain.chain, prepare
720 -- SBS code (live_signal_num == SBS_SIGNAL_NUM, or in a transition to/from it).
721 function get_sbs_chain(signals, t, width, height, input_resolution)
722 local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM)
723 local input1_type = get_input_type(signals, INPUT4_SIGNAL_NUM)
724 return sbs_chains[input0_type][overlay_enabled][input1_type][true]
727 local last_rate = 0.0
730 -- Called every frame. Get the chain for displaying at input <num>,
731 -- where 0 is live, 1 is preview, 2 is the first channel to display
732 -- in the bottom bar, and so on up to num_channels()+1. t is the
733 -- current time in seconds. width and height are the dimensions of
734 -- the output, although you can ignore them if you don't need them
735 -- (they're useful if you want to e.g. know what to resample by).
737 -- <signals> is basically an exposed InputState, which you can use to
738 -- query for information about the signals at the point of the current
739 -- frame. In particular, you can call get_width() and get_height()
740 -- for any signal number, and use that to e.g. assist in chain selection.
742 -- You should return two objects; the chain itself, and then a
743 -- function (taking no parameters) that is run just before rendering.
744 -- The function needs to call connect_signal on any inputs, so that
745 -- it gets updated video data for the given frame. (You are allowed
746 -- to switch which input your input is getting from between frames,
747 -- but not calling connect_signal results in undefined behavior.)
748 -- If you want to change any parameters in the chain, this is also
751 -- NOTE: The chain returned must be finalized with the Y'CbCr flag
752 -- if and only if num==0.
753 function get_chain(num, t, width, height, signals)
754 local input_resolution = {}
755 for signal_num=0,(NUM_CAMERAS-1) do
757 width = signals:get_width(signal_num),
758 height = signals:get_height(signal_num),
759 interlaced = signals:get_interlaced(signal_num),
760 has_signal = signals:get_has_signal(signal_num),
761 is_connected = signals:get_is_connected(signal_num),
762 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
763 frame_rate_den = signals:get_frame_rate_den(signal_num)
766 if res.interlaced then
767 -- Convert height from frame height to field height.
768 -- (Needed for e.g. place_rectangle.)
769 res.height = res.height * 2
771 -- Show field rate instead of frame rate; really for cosmetics only
772 -- (and actually contrary to EBU recommendations, although in line
773 -- with typical user expectations).
774 res.frame_rate_nom = res.frame_rate_nom * 2
777 input_resolution[signal_num] = res
779 last_resolution = input_resolution
781 -- Save some CPU time if we're not having SBS on live.
783 if live_signal_num == SBS_SIGNAL_NUM or
784 preview_signal_num == SBS_SIGNAL_NUM or
785 transition_type == ZOOM_TRANSITION then
790 if new_rate ~= last_rate then
791 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
792 bg_video:change_rate(new_rate)
796 if num == 0 then -- Live.
797 -- See if we're in a transition.
798 finish_transitions(t)
799 if transition_type == ZOOM_TRANSITION then
800 -- Transition in or out of SBS.
801 local chain = get_sbs_chain(signals, t, width, height, input_resolution)
803 prepare_sbs_chain(chain, calc_zoom_progress(t), transition_type, transition_src_signal, transition_dst_signal, width, height, input_resolution)
804 prepare_overlay_live(chain, t, 1.0)
806 return chain.chain, prepare
807 elseif transition_type == NO_TRANSITION and live_signal_num == SBS_SIGNAL_NUM then
809 local chain = get_sbs_chain(signals, t, width, height, input_resolution)
811 prepare_sbs_chain(chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution)
812 prepare_overlay_live(chain, t, 1.0)
814 return chain.chain, prepare
815 elseif transition_type == FADE_TRANSITION then
816 return get_fade_chain(signals, t, width, height, input_resolution)
817 elseif is_plain_signal(live_signal_num) then
818 local input_type = get_input_type(signals, live_signal_num)
819 local input_scale = needs_scale(signals, live_signal_num, width, height)
820 local overlay_really_enabled = overlay_enabled and simple_signal_has_overlay(live_signal_num)
821 local chain = simple_chains[input_type][input_scale][overlay_really_enabled][true]
823 if input_type ~= "video" then
824 chain.input:connect_signal(live_signal_num)
825 set_neutral_color_from_signal(chain.wb_effect, live_signal_num)
827 set_scale_parameters_if_needed(chain, width, height)
828 prepare_overlay_live(chain, t, 1.0)
830 return chain.chain, prepare
831 elseif live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
832 local chain = static_chains[true]
834 prepare_overlay_live(chain, t, 1.0) -- FIXME: Should this ever be here?
836 return chain.chain, prepare
842 -- We do not show overlays on the individual preview inputs.
843 -- The M/E preview matches what we'd put live by doing a transition, as always.
844 local show_overlay = false
845 if num == 1 then -- Preview.
846 if preview_signal_num == OVERLAY_SIGNAL_NUM then
847 num = live_signal_num + 2
848 show_overlay = not overlay_enabled
850 if transition_type ~= NO_TRANSITION then
851 num = transition_dst_signal + 2
854 num = preview_signal_num + 2
855 show_overlay = overlay_enabled and simple_signal_has_overlay(preview_signal_num)
859 -- Individual preview inputs (usually without overlay).
860 if is_plain_signal(num - 2) then
861 local signal_num = num - 2
862 local input_type = get_input_type(signals, signal_num)
863 local input_scale = needs_scale(signals, signal_num, width, height)
864 local chain = simple_chains[input_type][input_scale][show_overlay][false]
866 if input_type ~= "video" then
867 chain.input:connect_signal(signal_num)
868 set_neutral_color(chain.wb_effect, neutral_colors[signal_num + 1])
870 set_scale_parameters_if_needed(chain, width, height)
871 prepare_overlay_static(chain, t)
873 return chain.chain, prepare
875 if num == SBS_SIGNAL_NUM + 2 then
876 local input0_type = get_input_type(signals, INPUT0_SIGNAL_NUM)
877 local input1_type = get_input_type(signals, INPUT4_SIGNAL_NUM)
878 local chain = sbs_chains[input0_type][show_overlay][input1_type][false]
880 prepare_sbs_chain(chain, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution)
882 return chain.chain, prepare
884 if num == STATIC_SIGNAL_NUM + 2 then
885 local chain = static_chains[false]
887 prepare_overlay_static(chain, t)
889 return chain.chain, prepare
891 if num == OVERLAY_SIGNAL_NUM + 2 then
893 -- prepare_overlay(overlay_chain_lq, t)
895 return overlay_chain_lq, prepare
899 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
901 return math.floor(x + 0.5)
904 function lerp(a, b, t)
905 return a + (b - a) * t
908 function lerp_pos(a, b, t)
910 x0 = lerp(a.x0, b.x0, t),
911 y0 = lerp(a.y0, b.y0, t),
912 x1 = lerp(a.x1, b.x1, t),
913 y1 = lerp(a.y1, b.y1, t)
917 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
918 local xs = screen_width / 1280.0
919 local ys = screen_height / 720.0
923 x1 = round(xs * (x + width)),
924 y1 = round(ys * (y + height))
928 function prepare_sbs_chain(chain, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution)
929 chain.input0.input:connect_signal(0)
930 chain.input1.input:connect_signal(4)
931 set_neutral_color(chain.input0.wb_effect, neutral_colors[1])
932 set_neutral_color(chain.input1.wb_effect, neutral_colors[5])
934 -- Both inputs are the same size (true side-by-side).
935 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
936 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
938 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
940 if transition_type == NO_TRANSITION then
942 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
944 -- Zooming to/from SBS view into or out of a single view.
945 assert(transition_type == ZOOM_TRANSITION)
947 if src_signal == SBS_SIGNAL_NUM then
951 assert(dst_signal == SBS_SIGNAL_NUM)
956 if signal == INPUT0_SIGNAL_NUM then
957 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
958 elseif signal == INPUT4_SIGNAL_NUM then
959 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
963 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
964 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)
965 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)
968 -- Find the transformation that changes the first rectangle to the second one.
969 function find_affine_param(a, b)
970 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
971 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
975 tx = b.x0 - a.x0 * sx,
976 ty = b.y0 - a.y0 * sy
980 function place_rectangle_with_affine(resample_effect, resize_effect, padding_effect, pos, aff, screen_width, screen_height, input_width, input_height)
981 local x0 = pos.x0 * aff.sx + aff.tx
982 local x1 = pos.x1 * aff.sx + aff.tx
983 local y0 = pos.y0 * aff.sy + aff.ty
984 local y1 = pos.y1 * aff.sy + aff.ty
986 place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height)
989 function place_rectangle(resample_effect, resize_effect, padding_effect, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height)
995 padding_effect:set_int("width", screen_width)
996 padding_effect:set_int("height", screen_height)
999 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
1000 if resample_effect ~= nil then
1001 resample_effect:set_int("width", 1)
1002 resample_effect:set_int("height", 1)
1003 resample_effect:set_float("zoom_x", screen_width)
1004 resample_effect:set_float("zoom_y", screen_height)
1006 resize_effect:set_int("width", 1)
1007 resize_effect:set_int("height", 1)
1009 padding_effect:set_int("left", screen_width + 100)
1010 padding_effect:set_int("top", screen_height + 100)
1016 srcx0 = -x0 / (x1 - x0)
1020 srcy0 = -y0 / (y1 - y0)
1023 if x1 > screen_width then
1024 srcx1 = (screen_width - x0) / (x1 - x0)
1027 if y1 > screen_height then
1028 srcy1 = (screen_height - y0) / (y1 - y0)
1032 if resample_effect ~= nil then
1033 -- High-quality resampling.
1034 local x_subpixel_offset = x0 - math.floor(x0)
1035 local y_subpixel_offset = y0 - math.floor(y0)
1037 -- Resampling must be to an integral number of pixels. Round up,
1038 -- and then add an extra pixel so we have some leeway for the border.
1039 local width = math.ceil(x1 - x0) + 1
1040 local height = math.ceil(y1 - y0) + 1
1041 resample_effect:set_int("width", width)
1042 resample_effect:set_int("height", height)
1044 -- Correct the discrepancy with zoom. (This will leave a small
1045 -- excess edge of pixels and subpixels, which we'll correct for soon.)
1046 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
1047 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
1048 resample_effect:set_float("zoom_x", zoom_x)
1049 resample_effect:set_float("zoom_y", zoom_y)
1050 resample_effect:set_float("zoom_center_x", 0.0)
1051 resample_effect:set_float("zoom_center_y", 0.0)
1053 -- Padding must also be to a whole-pixel offset.
1054 padding_effect:set_int("left", math.floor(x0))
1055 padding_effect:set_int("top", math.floor(y0))
1057 -- Correct _that_ discrepancy by subpixel offset in the resampling.
1058 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
1059 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
1061 -- Finally, adjust the border so it is exactly where we want it.
1062 padding_effect:set_float("border_offset_left", x_subpixel_offset)
1063 padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1064 padding_effect:set_float("border_offset_top", y_subpixel_offset)
1065 padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1067 -- Lower-quality simple resizing.
1068 local width = round(x1 - x0)
1069 local height = round(y1 - y0)
1070 resize_effect:set_int("width", width)
1071 resize_effect:set_int("height", height)
1073 -- Padding must also be to a whole-pixel offset.
1074 padding_effect:set_int("left", math.floor(x0))
1075 padding_effect:set_int("top", math.floor(y0))
1079 function prepare_overlay_live(chain, t, extra_alpha_factor)
1080 if chain.overlay then
1081 local tt = calc_fade_progress(t, overlay_transition_start, overlay_transition_end)
1082 overlay_alpha = overlay_alpha_src + tt * (overlay_alpha_dst - overlay_alpha_src)
1083 overlay_alpha = overlay_alpha * extra_alpha_factor
1084 --print("overlay_alpha=" .. overlay_alpha .. " [" .. overlay_alpha_src .. "," .. overlay_alpha_dst .. "]@" .. tt)
1085 if t > overlay_transition_end and overlay_alpha_dst == 0.0 then
1086 overlay_enabled = false -- Takes effect next frame.
1087 -- print("Turning off overlay")
1089 chain.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1093 function prepare_overlay_static(chain)
1094 if chain.overlay then
1095 chain.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1099 function set_neutral_color(effect, color)
1100 effect:set_vec3("neutral_color", color[1], color[2], color[3])
1103 function set_neutral_color_from_signal(effect, signal)
1104 if is_plain_signal(signal) then
1105 set_neutral_color(effect, neutral_colors[signal - INPUT0_SIGNAL_NUM + 1])
1109 function calc_zoom_progress(t)
1110 if t < transition_start then
1112 elseif t > transition_end then
1115 local tt = (t - transition_start) / (transition_end - transition_start)
1117 return math.sin(tt * 3.14159265358 * 0.5)
1121 function calc_fade_progress(t, transition_start, transition_end)
1122 local tt = (t - transition_start) / (transition_end - transition_start)
1125 elseif tt > 1.0 then
1129 -- Make the fade look maybe a tad more natural, by pumping it
1130 -- through a sigmoid function.
1131 tt = 10.0 * tt - 5.0
1132 tt = 1.0 / (1.0 + math.exp(-tt))
1138 { "Reload overlay", reload_cef },
1139 { "Disconnect IPTV", disconnect_iptv }