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")
64 local first_frame = true
68 cef_input:execute_javascript_async("play()")
71 function disconnect_iptv()
72 iptv_video:disconnect()
75 -- An overlay with variable alpha.
76 function make_overlay(scene, base)
77 local image = scene:add_input(cef_input)
78 local multiply_effect = scene:add_effect(MultiplyEffect.new())
79 local overlay_effect = scene:add_optional_effect(OverlayEffect.new(), base, multiply_effect)
82 multiply_effect = multiply_effect,
83 overlay_effect = overlay_effect
87 function make_fade_input(scene)
89 input = scene:add_input(),
90 resample_effect = scene:add_optional_effect(ResampleEffect.new()), -- Activated if scaling.
91 wb_effect = scene:add_auto_white_balance()
93 ret.overlay = make_overlay(scene, ret.wb_effect)
97 -- A scene to fade between two inputs, of which either can be a picture
99 function make_fade_scene()
100 local scene = Scene.new(16, 9)
102 -- If fading between two live inputs, the overlay is put on top.
103 -- If fading between the static picture and a live input,
104 -- the overlay is put on the live input.
105 local input0 = make_fade_input(scene)
106 local input1 = make_fade_input(scene)
107 local mix_effect = scene:add_effect(MixEffect.new(), input0.overlay.overlay_effect, input1.overlay.overlay_effect)
108 local overlay = make_overlay(scene, mix_effect)
110 -- At most one overlay can be active at any given time.
111 input0.overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
112 input0.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
113 input1.overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
114 input1.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
115 overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
116 overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
118 scene:finalize(true) -- Only used live, don't bother creating LQ versions.
124 mix_effect = mix_effect,
128 fade_scene = make_fade_scene()
130 function make_sbs_input(scene, has_overlay)
131 local input = scene:add_input()
132 local wb_effect = scene:add_auto_white_balance()
133 local overlay = has_overlay and make_overlay(scene, wb_effect) or nil
134 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new()})
135 local padding_effect = scene:add_effect(IntegralPaddingEffect.new())
139 resample_effect = resample_effect,
140 wb_effect = wb_effect,
141 padding_effect = padding_effect
145 -- Side-by-side scene.
146 function make_sbs_scene()
147 local scene = Scene.new(16, 9)
149 local bg = scene:add_input(bg_video)
150 local input0 = make_sbs_input(scene, true)
151 local input1 = make_sbs_input(scene, false)
153 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
154 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
156 input0.input:display(0)
157 input1.input:display(1)
159 local i0 = scene:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
160 scene:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
167 overlay = input0.overlay -- May be nil.
170 local sbs_scene = make_sbs_scene()
172 function make_simple_scene_no_finalize()
173 local scene = Scene.new(16, 9)
175 local input = scene:add_input()
176 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new(), IdentityEffect.new()})
177 local wb_effect = scene:add_auto_white_balance()
178 local overlay = make_overlay(scene, wb_effect)
183 wb_effect = wb_effect,
184 resample_effect = resample_effect,
189 -- A scene to show a single input on screen.
190 function make_simple_scene()
191 local scene = make_simple_scene_no_finalize()
192 scene.scene:finalize()
196 local simple_scene = make_simple_scene()
198 -- Load all the stinger frames.
199 local stinger_images = {}
201 local filename = cef_path .. "/stinger/esk-blur" .. string.rep("0", 3 - string.len(tostring(idx))) .. idx .. ".png"
202 stinger_images[idx] = ImageInput.new(filename)
205 -- A scene to show a single input on screen, with a stinger on top.
206 function make_stinger_scene()
207 local scene = make_simple_scene_no_finalize()
208 scene.stinger_input = scene.scene:add_input()
209 scene.scene:add_effect(OverlayEffect.new(), scene.overlay.overlay_effect, scene.stinger_input)
210 scene.scene:finalize()
213 local stinger_scene = make_stinger_scene()
215 -- A scene to show a single static picture on screen. Never with HTML overlay.
216 local static_scene = Scene.new(16, 9)
217 static_scene:add_input(static_image)
218 static_scene:finalize()
220 -- A scene to show the overlay and nothing more. LQ only,
221 -- since it is not a valid live signal.
222 local overlay_scene_lq = Scene.new(16, 9)
223 local overlay_scene_lq_input = overlay_scene_lq:add_input(cef_input)
224 overlay_scene_lq:finalize(false)
226 function needs_scale(signals, signal_num, width, height)
227 if signal_num == STATIC_SIGNAL_NUM then
228 -- We assume this is already correctly scaled at load time.
231 assert(is_plain_signal(signal_num))
232 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
235 function set_scale_parameters_if_needed(scene, signals, signal_num, width, height, hq)
236 -- Futatabi rescaling will be linear, but original frames come back unscaled;
237 -- make them linear, too, so that we don't get more sharpness on every other
238 -- frame. This won't be right for fading, but it's probably hard to notice.
239 if signal_num == VIDEO_SIGNAL_NUM then
243 if needs_scale(signals, signal_num, width, height) then
245 scene.resample_effect:choose(ResampleEffect) -- High-quality resampling.
247 scene.resample_effect:choose(ResizeEffect) -- Low-quality resampling.
249 scene.resample_effect:set_int("width", width)
250 scene.resample_effect:set_int("height", height)
252 scene.resample_effect:disable()
258 -- Returns the number of outputs in addition to the live (0) and preview (1).
259 -- Called only once, at the start of the program.
260 function num_channels()
261 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
264 function is_plain_signal(num)
265 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT5_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
268 -- Helper function to write e.g. “720p60”. The difference between this
269 -- and get_channel_resolution_raw() is that this one also can say that
270 -- there's no signal.
271 function get_channel_resolution(signal_num)
272 local res = last_resolution[signal_num]
273 if (not res) or not res.is_connected then
274 return "disconnected"
276 if res.height <= 0 then
279 if not res.has_signal then
280 if res.height == 525 then
281 -- Special mode for the USB3 cards.
284 return get_channel_resolution_raw(res) .. ", no signal"
286 return get_channel_resolution_raw(res)
290 -- Helper function to write e.g. “60” or “59.94”.
291 function get_frame_rate(res)
292 local nom = res.frame_rate_nom
293 local den = res.frame_rate_den
294 if nom % den == 0 then
297 return string.format("%.2f", nom / den)
301 -- Helper function to write e.g. “720p60”.
302 function get_channel_resolution_raw(res)
303 if res.interlaced then
304 return res.height .. "i" .. get_frame_rate(res)
306 return res.height .. "p" .. get_frame_rate(res)
310 function get_futatabi_status(str)
313 for word in string.gmatch(str, '([^;]+)') do
314 table.insert(fields, word)
315 num_fields = num_fields + 1
317 if num_fields >= 4 then
325 -- Returns the name for each additional channel (starting from 2).
326 -- Called at the start of the program, and then each frame for live
327 -- channels in case they change resolution.
328 function channel_name(channel)
329 local signal_num = channel - 2
330 if signal_num == INPUT0_SIGNAL_NUM then
331 return "Main (" .. get_channel_resolution(signal_num) .. ")"
332 elseif signal_num == INPUT1_SIGNAL_NUM then
333 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
334 elseif signal_num == INPUT2_SIGNAL_NUM then
335 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
336 elseif signal_num == INPUT3_SIGNAL_NUM then
337 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
338 elseif signal_num == INPUT4_SIGNAL_NUM then
339 return "Ambience (" .. get_channel_resolution(signal_num) .. ")"
340 elseif signal_num == INPUT5_SIGNAL_NUM then
341 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
342 elseif signal_num == VIDEO_SIGNAL_NUM then
343 local res = last_resolution[iptv_video:get_signal_num()]
344 if (not res) or res.last_subtitle == nil then
347 return "Futatabi (" .. get_futatabi_status(res.last_subtitle) .. ")"
349 elseif signal_num == SBS_SIGNAL_NUM then
350 return "Side-by-side"
351 elseif signal_num == STATIC_SIGNAL_NUM then
352 return "Static picture"
353 elseif signal_num == OVERLAY_SIGNAL_NUM then
359 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
360 -- Should return -1 if the channel does not correspond to a simple signal.
361 -- (The information is used for whether right-click on the channel should bring up
362 -- an input selector or not.)
363 -- Called once for each channel, at the start of the program.
364 -- Will never be called for live (0) or preview (1).
365 function channel_signal(channel)
366 if channel - 2 == VIDEO_SIGNAL_NUM then
367 return iptv_video:get_signal_num()
368 elseif is_plain_signal(channel - 2) then
376 -- Called every frame. Returns the color (if any) to paint around the given
377 -- channel. Returns a CSS color (typically to mark live and preview signals);
378 -- "transparent" is allowed.
379 -- Will never be called for live (0) or preview (1).
380 function channel_color(channel)
381 if state.transition_type ~= NO_TRANSITION then
382 if channel_involved_in(channel, state.transition_src_signal) or
383 channel_involved_in(channel, state.transition_dst_signal) then
387 if channel_involved_in(channel, state.live_signal_num) then
391 if channel_involved_in(channel, state.preview_signal_num) then
397 function channel_involved_in(channel, signal_num)
398 if is_plain_signal(signal_num) then
399 return channel == (signal_num + 2)
401 if signal_num == SBS_SIGNAL_NUM then
402 return is_sbs_participating_signal(channel - 2)
404 if signal_num == STATIC_SIGNAL_NUM then
405 return (channel == NUM_CAMERAS)
407 if signal_num == VIDEO_SIGNAL_NUM then
408 return (channel == NUM_CAMERAS + 1)
414 -- Returns if a given channel supports setting white balance (starting from 2).
415 -- Called only once for each channel, at the start of the program.
416 function supports_set_wb(channel)
417 return is_plain_signal(channel - 2)
420 function finish_transitions(t)
421 if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
422 state.live_signal_num = state.transition_dst_signal
423 state.transition_type = NO_TRANSITION
426 -- Disable the overlay if it is no longer visible.
427 if state.overlay_enabled and t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
428 state.overlay_enabled = false
429 print("Turning off overlay")
433 function in_transition(t)
434 return t >= state.transition_start and t <= state.transition_end
437 function is_sbs_participating_signal(signal_num)
438 return signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT4_SIGNAL_NUM
441 function simple_signal_has_overlay(signal_num)
442 -- The commentator output has no overlay on it.
443 return signal_num ~= INPUT4_SIGNAL_NUM
447 -- Called every frame.
448 function get_transitions(t)
449 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
450 if t < state.overlay_transition_end then
454 if state.overlay_enabled then
455 return {"Overlay off", "", "Fade ovl out"}
457 return {"Overlay on", "", "Fade ovl in"}
461 if in_transition(t) then
462 -- Transition already in progress, the only thing we can do is really
463 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
467 if state.live_signal_num == state.preview_signal_num then
468 -- No transitions possible.
472 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
473 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
474 return {"Cut", "Sting", "Fade"}
477 if (is_plain_signal(state.live_signal_num) or state.live_signal_num == STATIC_SIGNAL_NUM) and
478 (is_plain_signal(state.preview_signal_num) or state.preview_signal_num == STATIC_SIGNAL_NUM) then
479 return {"Cut", "", "Fade"}
483 if state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num) then
484 return {"Cut", "Zoom in"}
485 elseif is_sbs_participating_signal(state.live_signal_num) and state.preview_signal_num == SBS_SIGNAL_NUM then
486 return {"Cut", "Zoom out"}
492 function swap_preview_live()
493 local temp = state.live_signal_num
494 state.live_signal_num = state.preview_signal_num
495 state.preview_signal_num = temp
498 function start_transition(type_, t, duration)
499 state.transition_start = t
500 state.transition_end = t + duration
501 state.transition_type = type_
502 state.transition_src_signal = state.live_signal_num
503 state.transition_dst_signal = state.preview_signal_num
504 state.stinger_in_progress = false
509 -- Called when the user clicks a transition button.
510 function transition_clicked(num, t)
511 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
514 state.overlay_transition_start = -2.0
515 state.overlay_transition_end = -1.0
516 if state.overlay_enabled then
517 state.overlay_enabled = false
518 state.overlay_alpha_src = 0.0
519 state.overlay_alpha_dst = 0.0
521 state.overlay_enabled = true
522 state.overlay_alpha_src = 1.0
523 state.overlay_alpha_dst = 1.0
527 state.overlay_transition_start = t
528 state.overlay_transition_end = t + 1.0
529 if state.overlay_enabled then
530 state.overlay_alpha_src = 1.0
531 state.overlay_alpha_dst = 0.0
533 state.overlay_alpha_src = 0.0
534 state.overlay_alpha_dst = 1.0
536 state.overlay_enabled = true
543 if in_transition(t) then
544 -- Ongoing transition; finish it immediately before the cut.
545 finish_transitions(state.transition_end)
549 state.stinger_in_progress = false
552 finish_transitions(t)
554 if state.live_signal_num == state.preview_signal_num then
559 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
560 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
562 if stinger_in_progress then
566 state.stinger_in_progress = true
567 state.stinger_frame = 0
568 state.stinger_src_signal = state.live_signal_num
569 state.stinger_dst_signal = state.preview_signal_num
573 if is_plain_signal(state.live_signal_num) and is_plain_signal(state.preview_signal_num) then
574 -- We can't zoom between these. Just make a cut.
575 io.write("Cutting from " .. state.live_signal_num .. " to " .. state.live_signal_num .. "\n")
577 state.stinger_in_progress = false
581 if (state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num)) or
582 (state.preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.live_signal_num)) then
583 start_transition(ZOOM_TRANSITION, t, 1.0)
586 finish_transitions(t)
589 if (state.live_signal_num ~= state.preview_signal_num) and
590 (is_plain_signal(state.live_signal_num) or
591 state.live_signal_num == STATIC_SIGNAL_NUM) and
592 (is_plain_signal(state.preview_signal_num) or
593 state.preview_signal_num == STATIC_SIGNAL_NUM) then
594 start_transition(FADE_TRANSITION, t, 1.0)
596 -- Fades involving SBS are ignored (we have no scene for it).
602 function channel_clicked(num)
603 state.preview_signal_num = num
606 function setup_fade_input(state, input, signals, signal_num, width, height)
607 if signal_num == STATIC_SIGNAL_NUM then
608 input.input:display(static_image)
610 -- We assume this is already correctly scaled at load time.
611 input.resample_effect:disable()
613 input.input:display(signal_num)
615 if (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height) then
616 input.resample_effect:enable()
617 input.resample_effect:set_int("width", width)
618 input.resample_effect:set_int("height", height)
620 input.resample_effect:disable()
625 function get_fade_scene(state, signals, t, width, height, input_resolution)
626 local scene = fade_scene
627 setup_fade_input(state, scene.input0, signals, state.transition_src_signal, width, height)
628 setup_fade_input(state, scene.input1, signals, state.transition_dst_signal, width, height)
630 local tt = calc_fade_progress(t, state.transition_start, state.transition_end)
631 scene.mix_effect:set_float("strength_first", 1.0 - tt)
632 scene.mix_effect:set_float("strength_second", tt)
634 -- The commentator output has no overlay on it.
635 local extra_alpha_factor = 1.0
636 if not simple_signal_has_overlay(state.transition_src_signal) and
637 not simple_signal_has_overlay(state.transition_dst_signal) then
638 extra_alpha_factor = 0.0
639 elseif not simple_signal_has_overlay(state.transition_src_signal) then
640 extra_alpha_factor = tt
641 elseif not simple_signal_has_overlay(state.transition_dst_signal) then
642 extra_alpha_factor = 1.0 - tt
645 -- If fading between two live inputs, the overlay is put on top.
646 -- If fading between the static picture and a live input,
647 -- the overlay is put on the live input.
648 scene.input0.overlay.overlay_effect:disable()
649 scene.input1.overlay.overlay_effect:disable()
650 scene.overlay.overlay_effect:disable()
651 if state.overlay_enabled then
652 local input0_live = (state.transition_src_signal ~= STATIC_SIGNAL_NUM)
653 local input1_live = (state.transition_dst_signal ~= STATIC_SIGNAL_NUM)
654 if input0_live and not input1_live then
655 scene.input0.overlay.overlay_effect:enable()
656 prepare_overlay_live(state, scene.input0, t, extra_alpha_factor)
657 elseif input1_live and not input0_live then
658 scene.input1.overlay.overlay_effect:enable()
659 prepare_overlay_live(state, scene.input1, t, extra_alpha_factor)
661 scene.overlay.overlay_effect:enable()
662 prepare_overlay_live(state, scene, t, extra_alpha_factor)
668 function fetch_input_resolution(signals, signal_num)
670 width = signals:get_width(signal_num),
671 height = signals:get_height(signal_num),
672 interlaced = signals:get_interlaced(signal_num),
673 has_signal = signals:get_has_signal(signal_num),
674 is_connected = signals:get_is_connected(signal_num),
675 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
676 frame_rate_den = signals:get_frame_rate_den(signal_num),
677 last_subtitle = signals:get_last_subtitle(signal_num)
680 if res.interlaced then
681 -- Convert height from frame height to field height.
682 -- (Needed for e.g. place_rectangle.)
683 res.height = res.height * 2
685 -- Show field rate instead of frame rate; really for cosmetics only
686 -- (and actually contrary to EBU recommendations, although in line
687 -- with typical user expectations).
688 res.frame_rate_nom = res.frame_rate_nom * 2
693 function update_volume()
694 if Nageru.get_num_audio_buses() < 3 or
695 Nageru.get_audio_bus_name(2) ~= 'Sound Shark' then
696 -- We haven't loaded the right audio mapping.
701 Nageru.set_audio_bus_fader_level_db(2, -math.huge)
705 local volume_db = Nageru.get_audio_bus_fader_level_db(2)
706 if Nageru.get_audio_bus_mute(2) or volume_db < -100.0 then
709 cef_input:execute_javascript_async("set_sound_shark_volume_db(" .. volume_db .. ")")
712 local last_rate = 0.0
715 -- Called every frame. Get the scene for displaying at input <num>,
716 -- where 0 is live, 1 is preview, 2 is the first channel to display
717 -- in the bottom bar, and so on up to num_channels()+1. t is the
718 -- current time in seconds. width and height are the dimensions of
719 -- the output, although you can ignore them if you don't need them
720 -- (they're useful if you want to e.g. know what to resample by).
722 -- <signals> is basically an exposed InputState, which you can use to
723 -- query for information about the signals at the point of the current
724 -- frame. In particular, you can call get_width() and get_height()
725 -- for any signal number, and use that to e.g. assist in scene selection.
727 -- You should return scene to use, after having set any parameters you
728 -- want to set (through set_int() etc.). The parameters will be snapshot
729 -- at return time and used during rendering.
730 function get_scene(num, t, width, height, signals)
735 local input_resolution = {}
736 for signal_num=0,(NUM_CAMERAS-1) do
737 input_resolution[signal_num] = fetch_input_resolution(signals, signal_num)
739 input_resolution[iptv_video:get_signal_num()] = fetch_input_resolution(signals, iptv_video:get_signal_num())
740 last_resolution = input_resolution
742 -- Save some CPU time if we're not having SBS on live.
744 if state.live_signal_num == SBS_SIGNAL_NUM or
745 state.preview_signal_num == SBS_SIGNAL_NUM or
746 state.transition_type == ZOOM_TRANSITION then
751 if new_rate ~= last_rate then
752 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
753 bg_video:change_rate(new_rate)
757 if num == 0 then -- Live.
758 -- See if we're in a transition.
759 finish_transitions(t)
760 if state.transition_type == ZOOM_TRANSITION then
761 -- Transition in or out of SBS.
762 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
763 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)
764 prepare_overlay_live(state, sbs_scene, t, 1.0)
765 return sbs_scene.scene
766 elseif state.transition_type == NO_TRANSITION and state.live_signal_num == SBS_SIGNAL_NUM then
768 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
769 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, true)
770 prepare_overlay_live(state, sbs_scene, t, 1.0)
771 return sbs_scene.scene
772 elseif state.transition_type == FADE_TRANSITION then
773 return get_fade_scene(state, signals, t, width, height, input_resolution)
774 elseif is_plain_signal(state.live_signal_num) then
775 local overlay_really_enabled = state.overlay_enabled and simple_signal_has_overlay(state.live_signal_num)
776 if state.stinger_in_progress then
777 stinger_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
778 if state.live_signal_num == VIDEO_SIGNAL_NUM then
779 stinger_scene.input:display(iptv_video)
781 stinger_scene.input:display(state.live_signal_num)
783 set_scale_parameters_if_needed(stinger_scene, signals, state.live_signal_num, width, height, true)
785 stinger_scene.stinger_input:display(stinger_images[state.stinger_frame])
786 state.stinger_frame = state.stinger_frame + 1
787 if state.stinger_frame >= 25 then
788 state.stinger_in_progress = false
789 state.preview_signal_num = state.stinger_src_signal
790 state.live_signal_num = state.stinger_dst_signal
792 if state.stinger_dst_signal == VIDEO_SIGNAL_NUM then
793 -- Turn off the overlay when playing video.
794 state.stinger_save_overlay = state.overlay_enabled
795 state.overlay_enabled = false
797 -- Restore the state.
798 state.overlay_enabled = state.stinger_save_overlay
802 if overlay_really_enabled then
803 prepare_overlay_live(state, stinger_scene, t, 1.0)
805 return stinger_scene.scene
807 simple_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
808 if state.live_signal_num == VIDEO_SIGNAL_NUM then
809 simple_scene.input:display(iptv_video)
811 simple_scene.input:display(state.live_signal_num)
813 set_scale_parameters_if_needed(simple_scene, signals, state.live_signal_num, width, height, true)
814 prepare_overlay_live(state, simple_scene, t, 1.0)
815 return simple_scene.scene
817 elseif state.live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
824 -- We do not show overlays on the individual preview inputs.
825 -- The M/E preview matches what we'd put live by doing a transition, as always.
826 local show_overlay = false
827 if num == 1 then -- Preview.
828 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
829 num = state.live_signal_num + 2
830 show_overlay = not state.overlay_enabled
832 if state.transition_type ~= NO_TRANSITION then
833 num = state.transition_dst_signal + 2
836 num = state.preview_signal_num + 2
837 show_overlay = state.overlay_enabled and simple_signal_has_overlay(state.preview_signal_num)
841 -- Individual preview inputs (usually without overlay).
842 if is_plain_signal(num - 2) then
843 local signal_num = num - 2
844 simple_scene.overlay.overlay_effect:enable_if(show_overlay)
845 if signal_num == VIDEO_SIGNAL_NUM then
846 simple_scene.input:display(iptv_video)
848 simple_scene.input:display(signal_num)
850 set_scale_parameters_if_needed(simple_scene, signals, signal_num, width, height, false)
851 prepare_overlay_static(simple_scene, t)
852 return simple_scene.scene
854 if num == SBS_SIGNAL_NUM + 2 then
855 sbs_scene.input0.overlay.overlay_effect:enable_if(show_overlay)
856 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, false)
857 return sbs_scene.scene
859 if num == STATIC_SIGNAL_NUM + 2 then
862 if num == OVERLAY_SIGNAL_NUM + 2 then
863 return overlay_scene_lq
867 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
869 return math.floor(x + 0.5)
872 function lerp(a, b, t)
873 return a + (b - a) * t
876 function lerp_pos(a, b, t)
878 x0 = lerp(a.x0, b.x0, t),
879 y0 = lerp(a.y0, b.y0, t),
880 x1 = lerp(a.x1, b.x1, t),
881 y1 = lerp(a.y1, b.y1, t)
885 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
886 local xs = screen_width / 1280.0
887 local ys = screen_height / 720.0
891 x1 = round(xs * (x + width)),
892 y1 = round(ys * (y + height))
896 function prepare_sbs_scene(state, scene, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution, hq)
897 scene.input0.input:display(0)
898 scene.input1.input:display(5)
900 -- Both inputs are the same size (true side-by-side).
901 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
902 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
904 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
906 if transition_type == NO_TRANSITION then
908 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
910 -- Zooming to/from SBS view into or out of a single view.
911 assert(transition_type == ZOOM_TRANSITION)
913 if src_signal == SBS_SIGNAL_NUM then
917 assert(dst_signal == SBS_SIGNAL_NUM)
922 if signal == INPUT0_SIGNAL_NUM then
923 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
924 elseif signal == INPUT4_SIGNAL_NUM then
925 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
929 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
930 place_rectangle_with_affine(scene.input0, pos0, affine_param, screen_width, screen_height, input_resolution[0].width, input_resolution[0].height, hq)
931 place_rectangle_with_affine(scene.input1, pos1, affine_param, screen_width, screen_height, input_resolution[1].width, input_resolution[1].height, hq)
934 -- Find the transformation that changes the first rectangle to the second one.
935 function find_affine_param(a, b)
936 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
937 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
941 tx = b.x0 - a.x0 * sx,
942 ty = b.y0 - a.y0 * sy
946 function place_rectangle_with_affine(input, pos, aff, screen_width, screen_height, input_width, input_height, hq)
947 local x0 = pos.x0 * aff.sx + aff.tx
948 local x1 = pos.x1 * aff.sx + aff.tx
949 local y0 = pos.y0 * aff.sy + aff.ty
950 local y1 = pos.y1 * aff.sy + aff.ty
952 place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
955 function place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
956 input.padding_effect:set_int("width", screen_width)
957 input.padding_effect:set_int("height", screen_height)
960 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
961 input.resample_effect:choose(ResizeEffect) -- Low-quality resizing.
962 input.resample_effect:set_int("width", 1)
963 input.resample_effect:set_int("height", 1)
964 input.padding_effect:set_int("left", screen_width + 100)
965 input.padding_effect:set_int("top", screen_height + 100)
976 srcx0 = -x0 / (x1 - x0)
980 srcy0 = -y0 / (y1 - y0)
983 if x1 > screen_width then
984 srcx1 = (screen_width - x0) / (x1 - x0)
987 if y1 > screen_height then
988 srcy1 = (screen_height - y0) / (y1 - y0)
993 -- High-quality resampling.
994 local resample_effect = input.resample_effect:choose(ResampleEffect)
996 local x_subpixel_offset = x0 - math.floor(x0)
997 local y_subpixel_offset = y0 - math.floor(y0)
999 -- Resampling must be to an integral number of pixels. Round up,
1000 -- and then add an extra pixel so we have some leeway for the border.
1001 local width = math.ceil(x1 - x0) + 1
1002 local height = math.ceil(y1 - y0) + 1
1003 input.resample_effect:set_int("width", width)
1004 input.resample_effect:set_int("height", height)
1006 -- Correct the discrepancy with zoom. (This will leave a small
1007 -- excess edge of pixels and subpixels, which we'll correct for soon.)
1008 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
1009 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
1010 resample_effect:set_float("zoom_x", zoom_x) -- Use the actual effect specialization; specific to ResampleEffect.
1011 resample_effect:set_float("zoom_y", zoom_y)
1012 resample_effect:set_float("zoom_center_x", 0.0)
1013 resample_effect:set_float("zoom_center_y", 0.0)
1015 -- Padding must also be to a whole-pixel offset.
1016 input.padding_effect:set_int("left", math.floor(x0))
1017 input.padding_effect:set_int("top", math.floor(y0))
1019 -- Correct _that_ discrepancy by subpixel offset in the resampling.
1020 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
1021 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
1023 -- Finally, adjust the border so it is exactly where we want it.
1024 input.padding_effect:set_float("border_offset_left", x_subpixel_offset)
1025 input.padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1026 input.padding_effect:set_float("border_offset_top", y_subpixel_offset)
1027 input.padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1029 -- Lower-quality simple resizing.
1030 input.resample_effect:choose(ResizeEffect)
1032 local width = round(x1 - x0)
1033 local height = round(y1 - y0)
1034 input.resample_effect:set_int("width", width)
1035 input.resample_effect:set_int("height", height)
1037 -- Padding must also be to a whole-pixel offset.
1038 input.padding_effect:set_int("left", math.floor(x0))
1039 input.padding_effect:set_int("top", math.floor(y0))
1041 -- No subpixel stuff.
1042 input.padding_effect:set_float("border_offset_left", 0.0)
1043 input.padding_effect:set_float("border_offset_right", 0.0)
1044 input.padding_effect:set_float("border_offset_top", 0.0)
1045 input.padding_effect:set_float("border_offset_bottom", 0.0)
1049 function prepare_overlay_live(state, scene, t, extra_alpha_factor)
1050 if scene.overlay then
1051 local tt = calc_fade_progress(t, state.overlay_transition_start, state.overlay_transition_end)
1052 local overlay_alpha = state.overlay_alpha_src + tt * (state.overlay_alpha_dst - state.overlay_alpha_src)
1053 overlay_alpha = overlay_alpha * extra_alpha_factor
1054 --print("overlay_alpha=" .. overlay_alpha .. " [" .. state.overlay_alpha_src .. "," .. state.overlay_alpha_dst .. "]@" .. tt)
1055 if t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
1056 state.overlay_enabled = false -- Takes effect next frame.
1057 -- print("Turning off overlay")
1059 scene.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1063 function prepare_overlay_static(scene)
1064 if scene.overlay then
1065 scene.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1069 function calc_zoom_progress(t)
1070 if t < state.transition_start then
1072 elseif t > state.transition_end then
1075 local tt = (t - state.transition_start) / (state.transition_end - state.transition_start)
1077 return math.sin(tt * 3.14159265358 * 0.5)
1081 function calc_fade_progress(t, transition_start, transition_end)
1082 local tt = (t - transition_start) / (transition_end - transition_start)
1085 elseif tt > 1.0 then
1089 -- Make the fade look maybe a tad more natural, by pumping it
1090 -- through a sigmoid function.
1091 tt = 10.0 * tt - 5.0
1092 tt = 1.0 / (1.0 + math.exp(-tt))
1098 { "Reload overlay", reload_cef },
1099 { "Disconnect IPTV", disconnect_iptv }