1 -- Nageru theme for TFK mini-tournament 2017, based on the default theme.
3 local futatabi_server = "http://10.1.0.172:9096"
6 transition_start = -2.0,
9 transition_src_signal = 0,
10 transition_dst_signal = 0,
12 overlay_transition_start = -2.0,
13 overlay_transition_end = -1.0,
14 overlay_alpha_src = 0.0,
15 overlay_alpha_dst = 1.0,
16 overlay_enabled = false,
18 stinger_in_progress = false,
20 stinger_src_signal = 0,
21 stinger_dst_signal = 0,
22 stinger_save_overlay = false,
25 preview_signal_num = 1
29 -- Valid values for live_signal_num and preview_signal_num.
30 local INPUT0_SIGNAL_NUM = 0
31 local INPUT1_SIGNAL_NUM = 1
32 local INPUT2_SIGNAL_NUM = 2
33 local INPUT3_SIGNAL_NUM = 3
34 local INPUT4_SIGNAL_NUM = 4
35 local INPUT5_SIGNAL_NUM = 5
36 local VIDEO_SIGNAL_NUM = NUM_CAMERAS
37 local SBS_SIGNAL_NUM = NUM_CAMERAS + 1
38 local STATIC_SIGNAL_NUM = NUM_CAMERAS + 2
40 -- Preview-only signal showing the current signal with the overlay.
41 -- Not valid for live_signal_num!
42 local OVERLAY_SIGNAL_NUM = NUM_CAMERAS + 3
44 -- Valid values for transition_type. (Cuts are done directly, so they need no entry.)
45 local NO_TRANSITION = 0
46 local ZOOM_TRANSITION = 1
47 local FADE_TRANSITION = 2
49 -- Last width/height/frame rate for each channel, if we have it.
50 -- Note that unlike the values we get from Nageru, the resolution is per
51 -- frame and not per field, since we deinterlace.
52 local last_resolution = {}
54 local cef_path = Nageru.THEME_PATH:match("(.*)/nageru/")
55 local cef_input = HTMLInput.new("file://" .. cef_path .. "/score.html")
56 cef_input:execute_javascript_async("play()")
58 local bg_video = VideoInput.new(cef_path .. "/flow-720.mp4", Nageru.VIDEO_FORMAT_YCBCR)
59 -- local iptv_video = VideoInput.new("http://10.34.129.69:9060/1/v.flv", Nageru.VIDEO_FORMAT_YCBCR)
60 local iptv_video = VideoInput.new(futatabi_server, Nageru.VIDEO_FORMAT_YCBCR)
61 iptv_video:change_rate(10.0)
63 local static_image = ImageInput.new(cef_path .. "/nageru/dsn-bg.png")
67 cef_input:execute_javascript_async("play()")
70 function disconnect_iptv()
71 iptv_video:disconnect()
74 -- An overlay with variable alpha.
75 function make_overlay(scene, base)
76 local image = scene:add_input(cef_input)
77 local multiply_effect = scene:add_effect(MultiplyEffect.new())
78 local overlay_effect = scene:add_optional_effect(OverlayEffect.new(), base, multiply_effect)
81 multiply_effect = multiply_effect,
82 overlay_effect = overlay_effect
86 function make_fade_input(scene)
88 input = scene:add_input(),
89 resample_effect = scene:add_optional_effect(ResampleEffect.new()), -- Activated if scaling.
90 wb_effect = scene:add_auto_white_balance()
92 ret.overlay = make_overlay(scene, ret.wb_effect)
96 -- A scene to fade between two inputs, of which either can be a picture
98 function make_fade_scene()
99 local scene = Scene.new(16, 9)
101 -- If fading between two live inputs, the overlay is put on top.
102 -- If fading between the static picture and a live input,
103 -- the overlay is put on the live input.
104 local input0 = make_fade_input(scene)
105 local input1 = make_fade_input(scene)
106 local mix_effect = scene:add_effect(MixEffect.new(), input0.overlay.overlay_effect, input1.overlay.overlay_effect)
107 local overlay = make_overlay(scene, mix_effect)
109 -- At most one overlay can be active at any given time.
110 input0.overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
111 input0.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
112 input1.overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
113 input1.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
114 overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
115 overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
117 scene:finalize(true) -- Only used live, don't bother creating LQ versions.
123 mix_effect = mix_effect,
127 fade_scene = make_fade_scene()
129 function make_sbs_input(scene, has_overlay)
130 local input = scene:add_input()
131 local wb_effect = scene:add_auto_white_balance()
132 local overlay = has_overlay and make_overlay(scene, wb_effect) or nil
133 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new()})
134 local padding_effect = scene:add_effect(IntegralPaddingEffect.new())
138 resample_effect = resample_effect,
139 wb_effect = wb_effect,
140 padding_effect = padding_effect
144 -- Side-by-side scene.
145 function make_sbs_scene()
146 local scene = Scene.new(16, 9)
148 local bg = scene:add_input(bg_video)
149 local input0 = make_sbs_input(scene, true)
150 local input1 = make_sbs_input(scene, false)
152 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
153 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
155 input0.input:display(0)
156 input1.input:display(1)
158 local i0 = scene:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
159 scene:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
166 overlay = input0.overlay -- May be nil.
169 local sbs_scene = make_sbs_scene()
171 function make_simple_scene_no_finalize()
172 local scene = Scene.new(16, 9)
174 local input = scene:add_input()
175 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new(), IdentityEffect.new()})
176 local wb_effect = scene:add_auto_white_balance()
177 local overlay = make_overlay(scene, wb_effect)
182 wb_effect = wb_effect,
183 resample_effect = resample_effect,
188 -- A scene to show a single input on screen.
189 function make_simple_scene()
190 local scene = make_simple_scene_no_finalize()
191 scene.scene:finalize()
195 local simple_scene = make_simple_scene()
197 -- Load all the stinger frames.
198 local stinger_images = {}
200 local filename = cef_path .. "/stinger/blur" .. string.rep("0", 3 - string.len(tostring(idx))) .. idx .. ".png"
201 stinger_images[idx] = ImageInput.new(filename)
204 -- A scene to show a single input on screen, with a stinger on top.
205 function make_stinger_scene()
206 local scene = make_simple_scene_no_finalize()
207 scene.stinger_input = scene.scene:add_input()
208 scene.scene:add_effect(OverlayEffect.new(), scene.overlay.overlay_effect, scene.stinger_input)
209 scene.scene:finalize()
212 local stinger_scene = make_stinger_scene()
214 -- A scene to show a single static picture on screen. Never with HTML overlay.
215 local static_scene = Scene.new(16, 9)
216 static_scene:add_input(static_image)
217 static_scene:finalize()
219 -- A scene to show the overlay and nothing more. LQ only,
220 -- since it is not a valid live signal.
221 local overlay_scene_lq = Scene.new(16, 9)
222 local overlay_scene_lq_input = overlay_scene_lq:add_input(cef_input)
223 overlay_scene_lq:finalize(false)
225 function needs_scale(signals, signal_num, width, height)
226 if signal_num == STATIC_SIGNAL_NUM then
227 -- We assume this is already correctly scaled at load time.
230 assert(is_plain_signal(signal_num))
231 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
234 function set_scale_parameters_if_needed(scene, signals, signal_num, width, height, hq)
235 -- Futatabi rescaling will be linear, but original frames come back unscaled;
236 -- make them linear, too, so that we don't get more sharpness on every other
237 -- frame. This won't be right for fading, but it's probably hard to notice.
238 if signal_num == VIDEO_SIGNAL_NUM then
242 if needs_scale(signals, signal_num, width, height) then
244 scene.resample_effect:choose(ResampleEffect) -- High-quality resampling.
246 scene.resample_effect:choose(ResizeEffect) -- Low-quality resampling.
248 scene.resample_effect:set_int("width", width)
249 scene.resample_effect:set_int("height", height)
251 scene.resample_effect:disable()
257 -- Returns the number of outputs in addition to the live (0) and preview (1).
258 -- Called only once, at the start of the program.
259 function num_channels()
260 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
263 function is_plain_signal(num)
264 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT5_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
267 -- Helper function to write e.g. “720p60”. The difference between this
268 -- and get_channel_resolution_raw() is that this one also can say that
269 -- there's no signal.
270 function get_channel_resolution(signal_num)
271 local res = last_resolution[signal_num]
272 if (not res) or not res.is_connected then
273 return "disconnected"
275 if res.height <= 0 then
278 if not res.has_signal then
279 if res.height == 525 then
280 -- Special mode for the USB3 cards.
283 return get_channel_resolution_raw(res) .. ", no signal"
285 return get_channel_resolution_raw(res)
289 -- Helper function to write e.g. “60” or “59.94”.
290 function get_frame_rate(res)
291 local nom = res.frame_rate_nom
292 local den = res.frame_rate_den
293 if nom % den == 0 then
296 return string.format("%.2f", nom / den)
300 -- Helper function to write e.g. “720p60”.
301 function get_channel_resolution_raw(res)
302 if res.interlaced then
303 return res.height .. "i" .. get_frame_rate(res)
305 return res.height .. "p" .. get_frame_rate(res)
309 function get_futatabi_status(str)
312 for word in string.gmatch(str, '([^;]+)') do
313 table.insert(fields, word)
314 num_fields = num_fields + 1
316 if num_fields >= 4 then
324 -- Returns the name for each additional channel (starting from 2).
325 -- Called at the start of the program, and then each frame for live
326 -- channels in case they change resolution.
327 function channel_name(channel)
328 local signal_num = channel - 2
329 if signal_num == INPUT0_SIGNAL_NUM then
330 return "Main (" .. get_channel_resolution(signal_num) .. ")"
331 elseif signal_num == INPUT1_SIGNAL_NUM then
332 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
333 elseif signal_num == INPUT2_SIGNAL_NUM then
334 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
335 elseif signal_num == INPUT3_SIGNAL_NUM then
336 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
337 elseif signal_num == INPUT4_SIGNAL_NUM then
338 return "Ambience (" .. get_channel_resolution(signal_num) .. ")"
339 elseif signal_num == INPUT5_SIGNAL_NUM then
340 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
341 elseif signal_num == VIDEO_SIGNAL_NUM then
342 local res = last_resolution[iptv_video:get_signal_num()]
343 if (not res) or res.last_subtitle == nil then
346 return "Futatabi (" .. get_futatabi_status(res.last_subtitle) .. ")"
348 elseif signal_num == SBS_SIGNAL_NUM then
349 return "Side-by-side"
350 elseif signal_num == STATIC_SIGNAL_NUM then
351 return "Static picture"
352 elseif signal_num == OVERLAY_SIGNAL_NUM then
358 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
359 -- Should return -1 if the channel does not correspond to a simple signal.
360 -- (The information is used for whether right-click on the channel should bring up
361 -- an input selector or not.)
362 -- Called once for each channel, at the start of the program.
363 -- Will never be called for live (0) or preview (1).
364 function channel_signal(channel)
365 if channel - 2 == VIDEO_SIGNAL_NUM then
366 return iptv_video:get_signal_num()
367 elseif is_plain_signal(channel - 2) then
375 -- Called every frame. Returns the color (if any) to paint around the given
376 -- channel. Returns a CSS color (typically to mark live and preview signals);
377 -- "transparent" is allowed.
378 -- Will never be called for live (0) or preview (1).
379 function channel_color(channel)
380 if state.transition_type ~= NO_TRANSITION then
381 if channel_involved_in(channel, state.transition_src_signal) or
382 channel_involved_in(channel, state.transition_dst_signal) then
386 if channel_involved_in(channel, state.live_signal_num) then
390 if channel_involved_in(channel, state.preview_signal_num) then
396 function channel_involved_in(channel, signal_num)
397 if is_plain_signal(signal_num) then
398 return channel == (signal_num + 2)
400 if signal_num == SBS_SIGNAL_NUM then
401 return is_sbs_participating_signal(channel - 2)
403 if signal_num == STATIC_SIGNAL_NUM then
404 return (channel == NUM_CAMERAS)
406 if signal_num == VIDEO_SIGNAL_NUM then
407 return (channel == NUM_CAMERAS + 1)
413 -- Returns if a given channel supports setting white balance (starting from 2).
414 -- Called only once for each channel, at the start of the program.
415 function supports_set_wb(channel)
416 return is_plain_signal(channel - 2)
419 function finish_transitions(t)
420 if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
421 state.live_signal_num = state.transition_dst_signal
422 state.transition_type = NO_TRANSITION
425 -- Disable the overlay if it is no longer visible.
426 if state.overlay_enabled and t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
427 state.overlay_enabled = false
428 print("Turning off overlay")
432 function in_transition(t)
433 return t >= state.transition_start and t <= state.transition_end
436 function is_sbs_participating_signal(signal_num)
437 return signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT4_SIGNAL_NUM
440 function simple_signal_has_overlay(signal_num)
441 -- The commentator output has no overlay on it.
442 return signal_num ~= INPUT4_SIGNAL_NUM
446 -- Called every frame.
447 function get_transitions(t)
448 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
449 if t < state.overlay_transition_end then
453 if state.overlay_enabled then
454 return {"Overlay off", "", "Fade ovl out"}
456 return {"Overlay on", "", "Fade ovl in"}
460 if in_transition(t) then
461 -- Transition already in progress, the only thing we can do is really
462 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
466 if state.live_signal_num == state.preview_signal_num then
467 -- No transitions possible.
471 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
472 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
473 return {"Cut", "Sting", "Fade"}
476 if (is_plain_signal(state.live_signal_num) or state.live_signal_num == STATIC_SIGNAL_NUM) and
477 (is_plain_signal(state.preview_signal_num) or state.preview_signal_num == STATIC_SIGNAL_NUM) then
478 return {"Cut", "", "Fade"}
482 if state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num) then
483 return {"Cut", "Zoom in"}
484 elseif is_sbs_participating_signal(state.live_signal_num) and state.preview_signal_num == SBS_SIGNAL_NUM then
485 return {"Cut", "Zoom out"}
491 function swap_preview_live()
492 local temp = state.live_signal_num
493 state.live_signal_num = state.preview_signal_num
494 state.preview_signal_num = temp
497 function start_transition(type_, t, duration)
498 state.transition_start = t
499 state.transition_end = t + duration
500 state.transition_type = type_
501 state.transition_src_signal = state.live_signal_num
502 state.transition_dst_signal = state.preview_signal_num
503 state.stinger_in_progress = false
508 -- Called when the user clicks a transition button.
509 function transition_clicked(num, t)
510 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
513 state.overlay_transition_start = -2.0
514 state.overlay_transition_end = -1.0
515 if state.overlay_enabled then
516 state.overlay_enabled = false
517 state.overlay_alpha_src = 0.0
518 state.overlay_alpha_dst = 0.0
520 state.overlay_enabled = true
521 state.overlay_alpha_src = 1.0
522 state.overlay_alpha_dst = 1.0
526 state.overlay_transition_start = t
527 state.overlay_transition_end = t + 1.0
528 if state.overlay_enabled then
529 state.overlay_alpha_src = 1.0
530 state.overlay_alpha_dst = 0.0
532 state.overlay_alpha_src = 0.0
533 state.overlay_alpha_dst = 1.0
535 state.overlay_enabled = true
542 if in_transition(t) then
543 -- Ongoing transition; finish it immediately before the cut.
544 finish_transitions(state.transition_end)
548 state.stinger_in_progress = false
551 finish_transitions(t)
553 if state.live_signal_num == state.preview_signal_num then
558 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
559 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
561 if stinger_in_progress then
565 state.stinger_in_progress = true
566 state.stinger_frame = 0
567 state.stinger_src_signal = state.live_signal_num
568 state.stinger_dst_signal = state.preview_signal_num
572 if is_plain_signal(state.live_signal_num) and is_plain_signal(state.preview_signal_num) then
573 -- We can't zoom between these. Just make a cut.
574 io.write("Cutting from " .. state.live_signal_num .. " to " .. state.live_signal_num .. "\n")
576 state.stinger_in_progress = false
580 if (state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num)) or
581 (state.preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.live_signal_num)) then
582 start_transition(ZOOM_TRANSITION, t, 1.0)
585 finish_transitions(t)
588 if (state.live_signal_num ~= state.preview_signal_num) and
589 (is_plain_signal(state.live_signal_num) or
590 state.live_signal_num == STATIC_SIGNAL_NUM) and
591 (is_plain_signal(state.preview_signal_num) or
592 state.preview_signal_num == STATIC_SIGNAL_NUM) then
593 start_transition(FADE_TRANSITION, t, 1.0)
595 -- Fades involving SBS are ignored (we have no scene for it).
601 function channel_clicked(num)
602 state.preview_signal_num = num
605 function setup_fade_input(state, input, signals, signal_num, width, height)
606 if signal_num == STATIC_SIGNAL_NUM then
607 input.input:display(static_image)
609 -- We assume this is already correctly scaled at load time.
610 input.resample_effect:disable()
612 input.input:display(signal_num)
614 if (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height) then
615 input.resample_effect:enable()
616 input.resample_effect:set_int("width", width)
617 input.resample_effect:set_int("height", height)
619 input.resample_effect:disable()
624 function get_fade_scene(state, signals, t, width, height, input_resolution)
625 local scene = fade_scene
626 setup_fade_input(state, scene.input0, signals, state.transition_src_signal, width, height)
627 setup_fade_input(state, scene.input1, signals, state.transition_dst_signal, width, height)
629 local tt = calc_fade_progress(t, state.transition_start, state.transition_end)
630 scene.mix_effect:set_float("strength_first", 1.0 - tt)
631 scene.mix_effect:set_float("strength_second", tt)
633 -- The commentator output has no overlay on it.
634 local extra_alpha_factor = 1.0
635 if not simple_signal_has_overlay(state.transition_src_signal) and
636 not simple_signal_has_overlay(state.transition_dst_signal) then
637 extra_alpha_factor = 0.0
638 elseif not simple_signal_has_overlay(state.transition_src_signal) then
639 extra_alpha_factor = tt
640 elseif not simple_signal_has_overlay(state.transition_dst_signal) then
641 extra_alpha_factor = 1.0 - tt
644 -- If fading between two live inputs, the overlay is put on top.
645 -- If fading between the static picture and a live input,
646 -- the overlay is put on the live input.
647 scene.input0.overlay.overlay_effect:disable()
648 scene.input1.overlay.overlay_effect:disable()
649 scene.overlay.overlay_effect:disable()
650 if state.overlay_enabled then
651 local input0_live = (state.transition_src_signal ~= STATIC_SIGNAL_NUM)
652 local input1_live = (state.transition_dst_signal ~= STATIC_SIGNAL_NUM)
653 if input0_live and not input1_live then
654 scene.input0.overlay.overlay_effect:enable()
655 prepare_overlay_live(state, scene.input0, t, extra_alpha_factor)
656 elseif input1_live and not input0_live then
657 scene.input1.overlay.overlay_effect:enable()
658 prepare_overlay_live(state, scene.input1, t, extra_alpha_factor)
660 scene.overlay.overlay_effect:enable()
661 prepare_overlay_live(state, scene, t, extra_alpha_factor)
667 function fetch_input_resolution(signals, signal_num)
669 width = signals:get_width(signal_num),
670 height = signals:get_height(signal_num),
671 interlaced = signals:get_interlaced(signal_num),
672 has_signal = signals:get_has_signal(signal_num),
673 is_connected = signals:get_is_connected(signal_num),
674 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
675 frame_rate_den = signals:get_frame_rate_den(signal_num),
676 last_subtitle = signals:get_last_subtitle(signal_num)
679 if res.interlaced then
680 -- Convert height from frame height to field height.
681 -- (Needed for e.g. place_rectangle.)
682 res.height = res.height * 2
684 -- Show field rate instead of frame rate; really for cosmetics only
685 -- (and actually contrary to EBU recommendations, although in line
686 -- with typical user expectations).
687 res.frame_rate_nom = res.frame_rate_nom * 2
692 local last_rate = 0.0
695 -- Called every frame. Get the scene for displaying at input <num>,
696 -- where 0 is live, 1 is preview, 2 is the first channel to display
697 -- in the bottom bar, and so on up to num_channels()+1. t is the
698 -- current time in seconds. width and height are the dimensions of
699 -- the output, although you can ignore them if you don't need them
700 -- (they're useful if you want to e.g. know what to resample by).
702 -- <signals> is basically an exposed InputState, which you can use to
703 -- query for information about the signals at the point of the current
704 -- frame. In particular, you can call get_width() and get_height()
705 -- for any signal number, and use that to e.g. assist in scene selection.
707 -- You should return scene to use, after having set any parameters you
708 -- want to set (through set_int() etc.). The parameters will be snapshot
709 -- at return time and used during rendering.
710 function get_scene(num, t, width, height, signals)
711 local input_resolution = {}
712 for signal_num=0,(NUM_CAMERAS-1) do
713 input_resolution[signal_num] = fetch_input_resolution(signals, signal_num)
715 input_resolution[iptv_video:get_signal_num()] = fetch_input_resolution(signals, iptv_video:get_signal_num())
716 last_resolution = input_resolution
718 -- Save some CPU time if we're not having SBS on live.
720 if state.live_signal_num == SBS_SIGNAL_NUM or
721 state.preview_signal_num == SBS_SIGNAL_NUM or
722 state.transition_type == ZOOM_TRANSITION then
727 if new_rate ~= last_rate then
728 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
729 bg_video:change_rate(new_rate)
733 if num == 0 then -- Live.
734 -- See if we're in a transition.
735 finish_transitions(t)
736 if state.transition_type == ZOOM_TRANSITION then
737 -- Transition in or out of SBS.
738 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
739 prepare_sbs_scene(state, sbs_scene, calc_zoom_progress(t), state.transition_type, state.transition_src_signal, state.transition_dst_signal, width, height, input_resolution, true)
740 prepare_overlay_live(state, sbs_scene, t, 1.0)
741 return sbs_scene.scene
742 elseif state.transition_type == NO_TRANSITION and state.live_signal_num == SBS_SIGNAL_NUM then
744 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
745 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, true)
746 prepare_overlay_live(state, sbs_scene, t, 1.0)
747 return sbs_scene.scene
748 elseif state.transition_type == FADE_TRANSITION then
749 return get_fade_scene(state, signals, t, width, height, input_resolution)
750 elseif is_plain_signal(state.live_signal_num) then
751 local overlay_really_enabled = state.overlay_enabled and simple_signal_has_overlay(state.live_signal_num)
752 if state.stinger_in_progress then
753 stinger_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
754 if state.live_signal_num == VIDEO_SIGNAL_NUM then
755 stinger_scene.input:display(iptv_video)
757 stinger_scene.input:display(state.live_signal_num)
759 set_scale_parameters_if_needed(stinger_scene, signals, state.live_signal_num, width, height, true)
761 stinger_scene.stinger_input:display(stinger_images[state.stinger_frame])
762 state.stinger_frame = state.stinger_frame + 1
763 if state.stinger_frame >= 25 then
764 state.stinger_in_progress = false
765 state.preview_signal_num = state.stinger_src_signal
766 state.live_signal_num = state.stinger_dst_signal
768 if state.stinger_dst_signal == VIDEO_SIGNAL_NUM then
769 -- Turn off the overlay when playing video.
770 state.stinger_save_overlay = state.overlay_enabled
771 state.overlay_enabled = false
773 -- Restore the state.
774 state.overlay_enabled = state.stinger_save_overlay
778 if overlay_really_enabled then
779 prepare_overlay_live(state, stinger_scene, t, 1.0)
781 return stinger_scene.scene
783 simple_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
784 if state.live_signal_num == VIDEO_SIGNAL_NUM then
785 simple_scene.input:display(iptv_video)
787 simple_scene.input:display(state.live_signal_num)
789 set_scale_parameters_if_needed(simple_scene, signals, state.live_signal_num, width, height, true)
790 prepare_overlay_live(state, simple_scene, t, 1.0)
791 return simple_scene.scene
793 elseif state.live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
800 -- We do not show overlays on the individual preview inputs.
801 -- The M/E preview matches what we'd put live by doing a transition, as always.
802 local show_overlay = false
803 if num == 1 then -- Preview.
804 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
805 num = state.live_signal_num + 2
806 show_overlay = not state.overlay_enabled
808 if state.transition_type ~= NO_TRANSITION then
809 num = state.transition_dst_signal + 2
812 num = state.preview_signal_num + 2
813 show_overlay = state.overlay_enabled and simple_signal_has_overlay(state.preview_signal_num)
817 -- Individual preview inputs (usually without overlay).
818 if is_plain_signal(num - 2) then
819 local signal_num = num - 2
820 simple_scene.overlay.overlay_effect:enable_if(show_overlay)
821 if signal_num == VIDEO_SIGNAL_NUM then
822 simple_scene.input:display(iptv_video)
824 simple_scene.input:display(signal_num)
826 set_scale_parameters_if_needed(simple_scene, signals, signal_num, width, height, false)
827 prepare_overlay_static(simple_scene, t)
828 return simple_scene.scene
830 if num == SBS_SIGNAL_NUM + 2 then
831 sbs_scene.input0.overlay.overlay_effect:enable_if(show_overlay)
832 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, false)
833 return sbs_scene.scene
835 if num == STATIC_SIGNAL_NUM + 2 then
838 if num == OVERLAY_SIGNAL_NUM + 2 then
839 return overlay_scene_lq
843 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
845 return math.floor(x + 0.5)
848 function lerp(a, b, t)
849 return a + (b - a) * t
852 function lerp_pos(a, b, t)
854 x0 = lerp(a.x0, b.x0, t),
855 y0 = lerp(a.y0, b.y0, t),
856 x1 = lerp(a.x1, b.x1, t),
857 y1 = lerp(a.y1, b.y1, t)
861 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
862 local xs = screen_width / 1280.0
863 local ys = screen_height / 720.0
867 x1 = round(xs * (x + width)),
868 y1 = round(ys * (y + height))
872 function prepare_sbs_scene(state, scene, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution, hq)
873 scene.input0.input:display(0)
874 scene.input1.input:display(5)
876 -- Both inputs are the same size (true side-by-side).
877 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
878 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
880 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
882 if transition_type == NO_TRANSITION then
884 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
886 -- Zooming to/from SBS view into or out of a single view.
887 assert(transition_type == ZOOM_TRANSITION)
889 if src_signal == SBS_SIGNAL_NUM then
893 assert(dst_signal == SBS_SIGNAL_NUM)
898 if signal == INPUT0_SIGNAL_NUM then
899 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
900 elseif signal == INPUT4_SIGNAL_NUM then
901 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
905 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
906 place_rectangle_with_affine(scene.input0, pos0, affine_param, screen_width, screen_height, input_resolution[0].width, input_resolution[0].height, hq)
907 place_rectangle_with_affine(scene.input1, pos1, affine_param, screen_width, screen_height, input_resolution[1].width, input_resolution[1].height, hq)
910 -- Find the transformation that changes the first rectangle to the second one.
911 function find_affine_param(a, b)
912 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
913 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
917 tx = b.x0 - a.x0 * sx,
918 ty = b.y0 - a.y0 * sy
922 function place_rectangle_with_affine(input, pos, aff, screen_width, screen_height, input_width, input_height, hq)
923 local x0 = pos.x0 * aff.sx + aff.tx
924 local x1 = pos.x1 * aff.sx + aff.tx
925 local y0 = pos.y0 * aff.sy + aff.ty
926 local y1 = pos.y1 * aff.sy + aff.ty
928 place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
931 function place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
932 input.padding_effect:set_int("width", screen_width)
933 input.padding_effect:set_int("height", screen_height)
936 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
937 input.resample_effect:choose(ResizeEffect) -- Low-quality resizing.
938 input.resample_effect:set_int("width", 1)
939 input.resample_effect:set_int("height", 1)
940 input.padding_effect:set_int("left", screen_width + 100)
941 input.padding_effect:set_int("top", screen_height + 100)
952 srcx0 = -x0 / (x1 - x0)
956 srcy0 = -y0 / (y1 - y0)
959 if x1 > screen_width then
960 srcx1 = (screen_width - x0) / (x1 - x0)
963 if y1 > screen_height then
964 srcy1 = (screen_height - y0) / (y1 - y0)
969 -- High-quality resampling.
970 local resample_effect = input.resample_effect:choose(ResampleEffect)
972 local x_subpixel_offset = x0 - math.floor(x0)
973 local y_subpixel_offset = y0 - math.floor(y0)
975 -- Resampling must be to an integral number of pixels. Round up,
976 -- and then add an extra pixel so we have some leeway for the border.
977 local width = math.ceil(x1 - x0) + 1
978 local height = math.ceil(y1 - y0) + 1
979 input.resample_effect:set_int("width", width)
980 input.resample_effect:set_int("height", height)
982 -- Correct the discrepancy with zoom. (This will leave a small
983 -- excess edge of pixels and subpixels, which we'll correct for soon.)
984 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
985 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
986 resample_effect:set_float("zoom_x", zoom_x) -- Use the actual effect specialization; specific to ResampleEffect.
987 resample_effect:set_float("zoom_y", zoom_y)
988 resample_effect:set_float("zoom_center_x", 0.0)
989 resample_effect:set_float("zoom_center_y", 0.0)
991 -- Padding must also be to a whole-pixel offset.
992 input.padding_effect:set_int("left", math.floor(x0))
993 input.padding_effect:set_int("top", math.floor(y0))
995 -- Correct _that_ discrepancy by subpixel offset in the resampling.
996 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
997 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
999 -- Finally, adjust the border so it is exactly where we want it.
1000 input.padding_effect:set_float("border_offset_left", x_subpixel_offset)
1001 input.padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1002 input.padding_effect:set_float("border_offset_top", y_subpixel_offset)
1003 input.padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1005 -- Lower-quality simple resizing.
1006 input.resample_effect:choose(ResizeEffect)
1008 local width = round(x1 - x0)
1009 local height = round(y1 - y0)
1010 input.resample_effect:set_int("width", width)
1011 input.resample_effect:set_int("height", height)
1013 -- Padding must also be to a whole-pixel offset.
1014 input.padding_effect:set_int("left", math.floor(x0))
1015 input.padding_effect:set_int("top", math.floor(y0))
1017 -- No subpixel stuff.
1018 input.padding_effect:set_float("border_offset_left", 0.0)
1019 input.padding_effect:set_float("border_offset_right", 0.0)
1020 input.padding_effect:set_float("border_offset_top", 0.0)
1021 input.padding_effect:set_float("border_offset_bottom", 0.0)
1025 function prepare_overlay_live(state, scene, t, extra_alpha_factor)
1026 if scene.overlay then
1027 local tt = calc_fade_progress(t, state.overlay_transition_start, state.overlay_transition_end)
1028 local overlay_alpha = state.overlay_alpha_src + tt * (state.overlay_alpha_dst - state.overlay_alpha_src)
1029 overlay_alpha = overlay_alpha * extra_alpha_factor
1030 --print("overlay_alpha=" .. overlay_alpha .. " [" .. state.overlay_alpha_src .. "," .. state.overlay_alpha_dst .. "]@" .. tt)
1031 if t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
1032 state.overlay_enabled = false -- Takes effect next frame.
1033 -- print("Turning off overlay")
1035 scene.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1039 function prepare_overlay_static(scene)
1040 if scene.overlay then
1041 scene.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1045 function calc_zoom_progress(t)
1046 if t < state.transition_start then
1048 elseif t > state.transition_end then
1051 local tt = (t - state.transition_start) / (state.transition_end - state.transition_start)
1053 return math.sin(tt * 3.14159265358 * 0.5)
1057 function calc_fade_progress(t, transition_start, transition_end)
1058 local tt = (t - transition_start) / (transition_end - transition_start)
1061 elseif tt > 1.0 then
1065 -- Make the fade look maybe a tad more natural, by pumping it
1066 -- through a sigmoid function.
1067 tt = 10.0 * tt - 5.0
1068 tt = 1.0 / (1.0 + math.exp(-tt))
1074 { "Reload overlay", reload_cef },
1075 { "Disconnect IPTV", disconnect_iptv }