1 -- Nageru theme for TFK mini-tournament 2017, based on the default theme.
3 local futatabi_server = "http://10.42.0.1:9096"
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 INPUT6_SIGNAL_NUM = 6
37 local COMMENTATOR_SIGNAL_NUM = 4
38 local VIDEO_SIGNAL_NUM = NUM_CAMERAS
39 local SBS_SIGNAL_NUM = NUM_CAMERAS + 1
40 local STATIC_SIGNAL_NUM = NUM_CAMERAS + 2
42 -- Preview-only signal showing the current signal with the overlay.
43 -- Not valid for live_signal_num!
44 local OVERLAY_SIGNAL_NUM = NUM_CAMERAS + 3
46 -- Valid values for transition_type. (Cuts are done directly, so they need no entry.)
47 local NO_TRANSITION = 0
48 local ZOOM_TRANSITION = 1
49 local FADE_TRANSITION = 2
51 -- Last width/height/frame rate for each channel, if we have it.
52 -- Note that unlike the values we get from Nageru, the resolution is per
53 -- frame and not per field, since we deinterlace.
54 local last_resolution = {}
56 local cef_path = Nageru.THEME_PATH:match("(.*)/nageru/")
57 local cef_input = HTMLInput.new("file://" .. cef_path .. "/score.html")
58 cef_input:execute_javascript_async("play()")
60 local bg_video = VideoInput.new(cef_path .. "/flow-720.mp4", Nageru.VIDEO_FORMAT_YCBCR)
61 -- local iptv_video = VideoInput.new("http://10.34.129.69:9060/1/v.flv", Nageru.VIDEO_FORMAT_YCBCR)
62 local iptv_video = VideoInput.new(futatabi_server, Nageru.VIDEO_FORMAT_YCBCR)
63 iptv_video:change_rate(10.0)
65 local static_image = ImageInput.new(cef_path .. "/nageru/tfk_pause.png")
66 local first_frame = true
67 local multiviewer_enabled = false
71 cef_input:execute_javascript_async("play()")
74 function disconnect_iptv()
75 iptv_video:disconnect()
78 function toggle_multiviewer()
79 multiviewer_enabled = not multiviewer_enabled
82 -- An overlay with variable alpha.
83 function make_overlay(scene, base)
84 local image = scene:add_input(cef_input)
85 local multiply_effect = scene:add_effect(MultiplyEffect.new())
86 local overlay_effect = scene:add_optional_effect(OverlayEffect.new(), base, multiply_effect)
89 multiply_effect = multiply_effect,
90 overlay_effect = overlay_effect
94 function make_fade_input(scene)
96 input = scene:add_input(),
97 resample_effect = scene:add_optional_effect(ResampleEffect.new()), -- Activated if scaling.
98 wb_effect = scene:add_white_balance()
100 ret.overlay = make_overlay(scene, ret.wb_effect)
104 -- A scene to fade between two inputs, of which either can be a picture
106 function make_fade_scene()
107 local scene = Scene.new(16, 9)
109 -- If fading between two live inputs, the overlay is put on top.
110 -- If fading between the static picture and a live input,
111 -- the overlay is put on the live input.
112 local input0 = make_fade_input(scene)
113 local input1 = make_fade_input(scene)
114 local mix_effect = scene:add_effect(MixEffect.new(), input0.overlay.overlay_effect, input1.overlay.overlay_effect)
115 local overlay = make_overlay(scene, mix_effect)
117 -- At most one overlay can be active at any given time.
118 input0.overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
119 input0.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
120 input1.overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
121 input1.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
122 overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
123 overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
125 scene:finalize(true) -- Only used live, don't bother creating LQ versions.
131 mix_effect = mix_effect,
135 fade_scene = make_fade_scene()
137 function make_sbs_input(scene, has_overlay)
138 local input = scene:add_input()
139 local wb_effect = scene:add_white_balance()
140 local overlay = has_overlay and make_overlay(scene, wb_effect) or nil
141 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new()})
142 local padding_effect = scene:add_effect(IntegralPaddingEffect.new())
146 resample_effect = resample_effect,
147 wb_effect = wb_effect,
148 padding_effect = padding_effect
152 -- Side-by-side scene.
153 function make_sbs_scene()
154 local scene = Scene.new(16, 9)
156 local bg = scene:add_input(bg_video)
157 local input0 = make_sbs_input(scene, true)
158 local input1 = make_sbs_input(scene, false)
160 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
161 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
163 input0.input:display(0)
164 input1.input:display(1)
166 local i0 = scene:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
167 scene:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
174 overlay = input0.overlay -- May be nil.
177 local sbs_scene = make_sbs_scene()
179 function make_simple_scene_no_finalize()
180 local scene = Scene.new(16, 9)
182 local input = scene:add_input()
183 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new(), IdentityEffect.new()})
184 local wb_effect = scene:add_white_balance()
185 local overlay = make_overlay(scene, wb_effect)
190 wb_effect = wb_effect,
191 resample_effect = resample_effect,
196 -- A scene to show a single input on screen.
197 function make_simple_scene()
198 local scene = make_simple_scene_no_finalize()
199 scene.scene:finalize()
202 local simple_scene = make_simple_scene()
204 -- Load all the stinger frames.
205 local stinger_images = {}
207 local filename = cef_path .. "/stinger/blur" .. string.rep("0", 3 - string.len(tostring(idx))) .. idx .. ".png"
208 stinger_images[idx] = ImageInput.new(filename)
211 -- A scene to show a single input on screen, with a stinger on top.
212 function make_stinger_scene()
213 local scene = make_simple_scene_no_finalize()
214 scene.stinger_input = scene.scene:add_input()
215 scene.scene:add_effect(OverlayEffect.new(), scene.overlay.overlay_effect, scene.stinger_input)
216 scene.scene:finalize()
219 local stinger_scene = make_stinger_scene()
221 -- A scene to show a single static picture on screen. Never with HTML overlay.
222 local static_scene = Scene.new(16, 9)
223 static_scene:add_input(static_image)
224 static_scene:finalize()
226 -- A scene to show the overlay and nothing more. LQ only,
227 -- since it is not a valid live signal.
228 local overlay_scene_lq = Scene.new(16, 9)
229 local overlay_scene_lq_input = overlay_scene_lq:add_input(cef_input)
230 overlay_scene_lq:finalize(false)
232 -- A debugging scene to show a simple multiviewer. HQ only, since there is no preview.
233 function make_multiview_scene()
234 local scene = Scene.new(16, 9)
235 local bg = scene:add_input(ImageInput.new(cef_path .. "/nageru/white.png"))
236 local mv_width = 1280 / 3
237 local mv_height = 720 / 3
238 local mv_offset = (720 - mv_height * 2) / 2
241 local input = scene:add_input(input_idx)
243 local resize = scene:add_effect(ResizeEffect.new())
244 resize:set_int("width", mv_width)
245 resize:set_int("height", mv_height)
247 local padding = scene:add_effect(IntegralPaddingEffect.new())
248 padding:set_int("width", 1280)
249 padding:set_int("height", 720)
250 padding:set_int("left", (input_idx % 3) * mv_width)
251 padding:set_int("top", math.floor(input_idx / 3) * mv_height + mv_offset)
253 local overlay = scene:add_effect(OverlayEffect.new(), bg, padding)
260 local multiview_scene_hq = make_multiview_scene()
262 function needs_scale(signals, signal_num, width, height)
263 if signal_num == STATIC_SIGNAL_NUM then
264 -- We assume this is already correctly scaled at load time.
267 assert(is_plain_signal(signal_num))
268 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
271 function set_scale_parameters_if_needed(scene, signals, signal_num, width, height, hq)
272 -- Futatabi rescaling will be linear, but original frames come back unscaled;
273 -- make them linear, too, so that we don't get more sharpness on every other
274 -- frame. This won't be right for fading, but it's probably hard to notice.
275 if signal_num == VIDEO_SIGNAL_NUM then
279 if needs_scale(signals, signal_num, width, height) then
281 scene.resample_effect:choose(ResampleEffect) -- High-quality resampling.
283 scene.resample_effect:choose(ResizeEffect) -- Low-quality resampling.
285 scene.resample_effect:set_int("width", width)
286 scene.resample_effect:set_int("height", height)
288 scene.resample_effect:disable()
294 -- Returns the number of outputs in addition to the live (0) and preview (1).
295 -- Called only once, at the start of the program.
296 function num_channels()
297 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
300 function is_plain_signal(num)
301 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT6_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
304 -- Helper function to write e.g. “720p60”. The difference between this
305 -- and get_channel_resolution_raw() is that this one also can say that
306 -- there's no signal.
307 function get_channel_resolution(signal_num)
308 local res = last_resolution[signal_num]
309 if (not res) or not res.is_connected then
310 return "disconnected"
312 if res.height <= 0 then
315 if not res.has_signal then
316 if res.height == 525 then
317 -- Special mode for the USB3 cards.
320 return get_channel_resolution_raw(res) .. ", no signal"
322 return get_channel_resolution_raw(res)
326 -- Helper function to write e.g. “60” or “59.94”.
327 function get_frame_rate(res)
328 local nom = res.frame_rate_nom
329 local den = res.frame_rate_den
330 if nom % den == 0 then
333 return string.format("%.2f", nom / den)
337 -- Helper function to write e.g. “720p60”.
338 function get_channel_resolution_raw(res)
339 if res.interlaced then
340 return res.height .. "i" .. get_frame_rate(res)
342 return res.height .. "p" .. get_frame_rate(res)
346 function get_futatabi_status(str)
349 for word in string.gmatch(str, '([^;]+)') do
350 table.insert(fields, word)
351 num_fields = num_fields + 1
353 if num_fields >= 4 then
361 -- Returns the name for each additional channel (starting from 2).
362 -- Called at the start of the program, and then each frame for live
363 -- channels in case they change resolution.
364 function channel_name(channel)
365 local signal_num = channel - 2
366 if signal_num == INPUT0_SIGNAL_NUM then
367 return "Main (" .. get_channel_resolution(signal_num) .. ")"
368 elseif signal_num == INPUT1_SIGNAL_NUM then
369 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
370 elseif signal_num == INPUT2_SIGNAL_NUM then
371 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
372 elseif signal_num == INPUT3_SIGNAL_NUM then
373 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
374 elseif signal_num == INPUT4_SIGNAL_NUM then
375 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
376 elseif signal_num == INPUT5_SIGNAL_NUM then
377 return "Hall A2 (" .. get_channel_resolution(signal_num) .. ")"
378 elseif signal_num == INPUT6_SIGNAL_NUM then
379 return "Hall A1 (" .. get_channel_resolution(signal_num) .. ")"
380 elseif signal_num == VIDEO_SIGNAL_NUM then
381 local res = last_resolution[iptv_video:get_signal_num()]
382 if (not res) or res.last_subtitle == nil then
385 return "Futatabi (" .. get_futatabi_status(res.last_subtitle) .. ")"
387 elseif signal_num == SBS_SIGNAL_NUM then
388 return "Side-by-side"
389 elseif signal_num == STATIC_SIGNAL_NUM then
390 return "Static picture"
391 elseif signal_num == OVERLAY_SIGNAL_NUM then
397 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
398 -- Should return -1 if the channel does not correspond to a simple signal.
399 -- (The information is used for whether right-click on the channel should bring up
400 -- an input selector or not.)
401 -- Called once for each channel, at the start of the program.
402 -- Will never be called for live (0) or preview (1).
403 function channel_signal(channel)
404 if channel - 2 == VIDEO_SIGNAL_NUM then
405 return iptv_video:get_signal_num()
406 elseif is_plain_signal(channel - 2) then
414 -- Called every frame. Returns the color (if any) to paint around the given
415 -- channel. Returns a CSS color (typically to mark live and preview signals);
416 -- "transparent" is allowed.
417 -- Will never be called for live (0) or preview (1).
418 function channel_color(channel)
419 if state.transition_type ~= NO_TRANSITION then
420 if channel_involved_in(channel, state.transition_src_signal) or
421 channel_involved_in(channel, state.transition_dst_signal) then
425 if channel_involved_in(channel, state.live_signal_num) then
429 if channel_involved_in(channel, state.preview_signal_num) then
435 function channel_involved_in(channel, signal_num)
436 if is_plain_signal(signal_num) then
437 return channel == (signal_num + 2)
439 if signal_num == SBS_SIGNAL_NUM then
440 return is_sbs_participating_signal(channel - 2)
442 if signal_num == STATIC_SIGNAL_NUM then
443 return (channel == NUM_CAMERAS)
445 if signal_num == VIDEO_SIGNAL_NUM then
446 return (channel == NUM_CAMERAS + 1)
452 -- Returns if a given channel supports setting white balance (starting from 2).
453 -- Called only once for each channel, at the start of the program.
454 function supports_set_wb(channel)
455 return is_plain_signal(channel - 2)
458 function finish_transitions(t)
459 if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
460 state.live_signal_num = state.transition_dst_signal
461 state.transition_type = NO_TRANSITION
464 -- Disable the overlay if it is no longer visible.
465 if state.overlay_enabled and t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
466 state.overlay_enabled = false
467 print("Turning off overlay")
471 function in_transition(t)
472 return t >= state.transition_start and t <= state.transition_end
475 function is_sbs_participating_signal(signal_num)
476 return signal_num == INPUT0_SIGNAL_NUM or signal_num == COMMENTATOR_SIGNAL_NUM
479 function simple_signal_has_overlay(signal_num)
480 -- The commentator output has no overlay on it.
481 return signal_num ~= COMMENTATOR_SIGNAL_NUM
485 -- Called every frame.
486 function get_transitions(t)
487 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
488 if t < state.overlay_transition_end then
492 if state.overlay_enabled then
493 return {"Overlay off", "", "Fade ovl out"}
495 return {"Overlay on", "", "Fade ovl in"}
499 if in_transition(t) then
500 -- Transition already in progress, the only thing we can do is really
501 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
505 if state.live_signal_num == state.preview_signal_num then
506 -- No transitions possible.
510 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
511 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
512 return {"Cut", "Sting", "Fade"}
515 if (is_plain_signal(state.live_signal_num) or state.live_signal_num == STATIC_SIGNAL_NUM) and
516 (is_plain_signal(state.preview_signal_num) or state.preview_signal_num == STATIC_SIGNAL_NUM) then
517 return {"Cut", "", "Fade"}
521 if state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num) then
522 return {"Cut", "Zoom in"}
523 elseif is_sbs_participating_signal(state.live_signal_num) and state.preview_signal_num == SBS_SIGNAL_NUM then
524 return {"Cut", "Zoom out"}
530 function swap_preview_live()
531 local temp = state.live_signal_num
532 state.live_signal_num = state.preview_signal_num
533 state.preview_signal_num = temp
536 function start_transition(type_, t, duration)
537 state.transition_start = t
538 state.transition_end = t + duration
539 state.transition_type = type_
540 state.transition_src_signal = state.live_signal_num
541 state.transition_dst_signal = state.preview_signal_num
542 state.stinger_in_progress = false
547 -- Called when the user clicks a transition button.
548 function transition_clicked(num, t)
549 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
552 state.overlay_transition_start = -2.0
553 state.overlay_transition_end = -1.0
554 if state.overlay_enabled then
555 state.overlay_enabled = false
556 state.overlay_alpha_src = 0.0
557 state.overlay_alpha_dst = 0.0
559 state.overlay_enabled = true
560 state.overlay_alpha_src = 1.0
561 state.overlay_alpha_dst = 1.0
565 state.overlay_transition_start = t
566 state.overlay_transition_end = t + 1.0
567 if state.overlay_enabled then
568 state.overlay_alpha_src = 1.0
569 state.overlay_alpha_dst = 0.0
571 state.overlay_alpha_src = 0.0
572 state.overlay_alpha_dst = 1.0
574 state.overlay_enabled = true
581 if in_transition(t) then
582 -- Ongoing transition; finish it immediately before the cut.
583 finish_transitions(state.transition_end)
587 state.stinger_in_progress = false
590 finish_transitions(t)
592 if state.live_signal_num == state.preview_signal_num then
597 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
598 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
600 if stinger_in_progress then
604 state.stinger_in_progress = true
605 state.stinger_frame = 0
606 state.stinger_src_signal = state.live_signal_num
607 state.stinger_dst_signal = state.preview_signal_num
611 if is_plain_signal(state.live_signal_num) and is_plain_signal(state.preview_signal_num) then
612 -- We can't zoom between these. Just make a cut.
613 io.write("Cutting from " .. state.live_signal_num .. " to " .. state.live_signal_num .. "\n")
615 state.stinger_in_progress = false
619 if (state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num)) or
620 (state.preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.live_signal_num)) then
621 start_transition(ZOOM_TRANSITION, t, 1.0)
624 finish_transitions(t)
627 if (state.live_signal_num ~= state.preview_signal_num) and
628 (is_plain_signal(state.live_signal_num) or
629 state.live_signal_num == STATIC_SIGNAL_NUM) and
630 (is_plain_signal(state.preview_signal_num) or
631 state.preview_signal_num == STATIC_SIGNAL_NUM) then
632 start_transition(FADE_TRANSITION, t, 1.0)
634 -- Fades involving SBS are ignored (we have no scene for it).
640 function channel_clicked(num)
641 state.preview_signal_num = num
644 function setup_fade_input(state, input, signals, signal_num, width, height)
645 if signal_num == STATIC_SIGNAL_NUM then
646 input.input:display(static_image)
648 -- We assume this is already correctly scaled at load time.
649 input.resample_effect:disable()
651 input.input:display(signal_num)
653 if (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height) then
654 input.resample_effect:enable()
655 input.resample_effect:set_int("width", width)
656 input.resample_effect:set_int("height", height)
658 input.resample_effect:disable()
663 function get_fade_scene(state, signals, t, width, height, input_resolution)
664 local scene = fade_scene
665 setup_fade_input(state, scene.input0, signals, state.transition_src_signal, width, height)
666 setup_fade_input(state, scene.input1, signals, state.transition_dst_signal, width, height)
668 local tt = calc_fade_progress(t, state.transition_start, state.transition_end)
669 scene.mix_effect:set_float("strength_first", 1.0 - tt)
670 scene.mix_effect:set_float("strength_second", tt)
672 -- The commentator output has no overlay on it.
673 local extra_alpha_factor = 1.0
674 if not simple_signal_has_overlay(state.transition_src_signal) and
675 not simple_signal_has_overlay(state.transition_dst_signal) then
676 extra_alpha_factor = 0.0
677 elseif not simple_signal_has_overlay(state.transition_src_signal) then
678 extra_alpha_factor = tt
679 elseif not simple_signal_has_overlay(state.transition_dst_signal) then
680 extra_alpha_factor = 1.0 - tt
683 -- If fading between two live inputs, the overlay is put on top.
684 -- If fading between the static picture and a live input,
685 -- the overlay is put on the live input.
686 scene.input0.overlay.overlay_effect:disable()
687 scene.input1.overlay.overlay_effect:disable()
688 scene.overlay.overlay_effect:disable()
689 if state.overlay_enabled then
690 local input0_live = (state.transition_src_signal ~= STATIC_SIGNAL_NUM)
691 local input1_live = (state.transition_dst_signal ~= STATIC_SIGNAL_NUM)
692 if input0_live and not input1_live then
693 scene.input0.overlay.overlay_effect:enable()
694 prepare_overlay_live(state, scene.input0, t, extra_alpha_factor)
695 elseif input1_live and not input0_live then
696 scene.input1.overlay.overlay_effect:enable()
697 prepare_overlay_live(state, scene.input1, t, extra_alpha_factor)
699 scene.overlay.overlay_effect:enable()
700 prepare_overlay_live(state, scene, t, extra_alpha_factor)
706 function fetch_input_resolution(signals, signal_num)
708 width = signals:get_width(signal_num),
709 height = signals:get_height(signal_num),
710 interlaced = signals:get_interlaced(signal_num),
711 has_signal = signals:get_has_signal(signal_num),
712 is_connected = signals:get_is_connected(signal_num),
713 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
714 frame_rate_den = signals:get_frame_rate_den(signal_num),
715 last_subtitle = signals:get_last_subtitle(signal_num)
718 if res.interlaced then
719 -- Convert height from frame height to field height.
720 -- (Needed for e.g. place_rectangle.)
721 res.height = res.height * 2
723 -- Show field rate instead of frame rate; really for cosmetics only
724 -- (and actually contrary to EBU recommendations, although in line
725 -- with typical user expectations).
726 res.frame_rate_nom = res.frame_rate_nom * 2
731 local last_alsa_sound_shark_volume = -1 -- Always update on the first frame.
733 function update_volume()
734 if Nageru.get_num_audio_buses() < 3 or
735 Nageru.get_audio_bus_name(2) ~= 'Sound Shark' then
736 -- We haven't loaded the right audio mapping.
741 Nageru.set_audio_bus_fader_level_db(2, -math.huge)
745 local volume_db = Nageru.get_audio_bus_fader_level_db(2)
746 if Nageru.get_audio_bus_mute(2) or volume_db < -100.0 then
749 cef_input:execute_javascript_async("set_sound_shark_volume_db(" .. volume_db .. ")")
751 local desired_alsa_sound_shark_volume = (volume_db < -40.0) and 0 or 154 -- 154 corresponds to 70% in alsamixer for this input.
752 if desired_alsa_sound_shark_volume ~= last_alsa_sound_shark_volume then
753 os.execute("amixer -D hw:CARD=USB sset 'Mix A Input 04' " .. desired_alsa_sound_shark_volume .. " &")
754 os.execute("amixer -D hw:CARD=USB sset 'Mix B Input 04' " .. desired_alsa_sound_shark_volume .. " &")
755 last_alsa_sound_shark_volume = desired_alsa_sound_shark_volume
759 local last_rate = 0.0
762 -- Called every frame. Get the scene for displaying at input <num>,
763 -- where 0 is live, 1 is preview, 2 is the first channel to display
764 -- in the bottom bar, and so on up to num_channels()+1. t is the
765 -- current time in seconds. width and height are the dimensions of
766 -- the output, although you can ignore them if you don't need them
767 -- (they're useful if you want to e.g. know what to resample by).
769 -- <signals> is basically an exposed InputState, which you can use to
770 -- query for information about the signals at the point of the current
771 -- frame. In particular, you can call get_width() and get_height()
772 -- for any signal number, and use that to e.g. assist in scene selection.
774 -- You should return scene to use, after having set any parameters you
775 -- want to set (through set_int() etc.). The parameters will be snapshot
776 -- at return time and used during rendering.
777 function get_scene(num, t, width, height, signals)
782 local input_resolution = {}
783 for signal_num=0,(NUM_CAMERAS-1) do
784 input_resolution[signal_num] = fetch_input_resolution(signals, signal_num)
786 input_resolution[iptv_video:get_signal_num()] = fetch_input_resolution(signals, iptv_video:get_signal_num())
787 last_resolution = input_resolution
789 -- Save some CPU time if we're not having SBS on live.
791 if state.live_signal_num == SBS_SIGNAL_NUM or
792 state.preview_signal_num == SBS_SIGNAL_NUM or
793 state.transition_type == ZOOM_TRANSITION then
798 if new_rate ~= last_rate then
799 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
800 bg_video:change_rate(new_rate)
804 if num == 0 and multiviewer_enabled then -- Live, with debugging on.
805 return multiview_scene_hq
808 if num == 0 then -- Live.
809 -- See if we're in a transition.
810 finish_transitions(t)
811 if state.transition_type == ZOOM_TRANSITION then
812 -- Transition in or out of SBS.
813 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
814 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)
815 prepare_overlay_live(state, sbs_scene, t, 1.0)
816 return sbs_scene.scene
817 elseif state.transition_type == NO_TRANSITION and state.live_signal_num == SBS_SIGNAL_NUM then
819 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
820 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, true)
821 prepare_overlay_live(state, sbs_scene, t, 1.0)
822 return sbs_scene.scene
823 elseif state.transition_type == FADE_TRANSITION then
824 return get_fade_scene(state, signals, t, width, height, input_resolution)
825 elseif is_plain_signal(state.live_signal_num) then
826 local overlay_really_enabled = state.overlay_enabled and simple_signal_has_overlay(state.live_signal_num)
827 if state.stinger_in_progress then
828 stinger_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
829 if state.live_signal_num == VIDEO_SIGNAL_NUM then
830 stinger_scene.input:display(iptv_video)
832 stinger_scene.input:display(state.live_signal_num)
834 set_scale_parameters_if_needed(stinger_scene, signals, state.live_signal_num, width, height, true)
836 stinger_scene.stinger_input:display(stinger_images[state.stinger_frame])
837 state.stinger_frame = state.stinger_frame + 1
838 if state.stinger_frame >= 25 then
839 state.stinger_in_progress = false
840 state.preview_signal_num = state.stinger_src_signal
841 state.live_signal_num = state.stinger_dst_signal
843 if state.stinger_dst_signal == VIDEO_SIGNAL_NUM then
844 -- Turn off the overlay when playing video.
845 state.stinger_save_overlay = state.overlay_enabled
846 state.overlay_enabled = false
848 -- Restore the state.
849 state.overlay_enabled = state.stinger_save_overlay
853 if overlay_really_enabled then
854 prepare_overlay_live(state, stinger_scene, t, 1.0)
856 return stinger_scene.scene
858 simple_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
859 if state.live_signal_num == VIDEO_SIGNAL_NUM then
860 simple_scene.input:display(iptv_video)
862 simple_scene.input:display(state.live_signal_num)
864 set_scale_parameters_if_needed(simple_scene, signals, state.live_signal_num, width, height, true)
865 prepare_overlay_live(state, simple_scene, t, 1.0)
866 return simple_scene.scene
868 elseif state.live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
875 -- We do not show overlays on the individual preview inputs.
876 -- The M/E preview matches what we'd put live by doing a transition, as always.
877 local show_overlay = false
878 if num == 1 then -- Preview.
879 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
880 num = state.live_signal_num + 2
881 show_overlay = not state.overlay_enabled
883 if state.transition_type ~= NO_TRANSITION then
884 num = state.transition_dst_signal + 2
887 num = state.preview_signal_num + 2
888 show_overlay = state.overlay_enabled and simple_signal_has_overlay(state.preview_signal_num)
892 -- Individual preview inputs (usually without overlay).
893 if is_plain_signal(num - 2) then
894 local signal_num = num - 2
895 simple_scene.overlay.overlay_effect:enable_if(show_overlay)
896 if signal_num == VIDEO_SIGNAL_NUM then
897 simple_scene.input:display(iptv_video)
899 simple_scene.input:display(signal_num)
901 set_scale_parameters_if_needed(simple_scene, signals, signal_num, width, height, false)
902 prepare_overlay_static(simple_scene, t)
903 return simple_scene.scene
905 if num == SBS_SIGNAL_NUM + 2 then
906 sbs_scene.input0.overlay.overlay_effect:enable_if(show_overlay)
907 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, false)
908 return sbs_scene.scene
910 if num == STATIC_SIGNAL_NUM + 2 then
913 if num == OVERLAY_SIGNAL_NUM + 2 then
914 return overlay_scene_lq
918 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
920 return math.floor(x + 0.5)
923 function lerp(a, b, t)
924 return a + (b - a) * t
927 function lerp_pos(a, b, t)
929 x0 = lerp(a.x0, b.x0, t),
930 y0 = lerp(a.y0, b.y0, t),
931 x1 = lerp(a.x1, b.x1, t),
932 y1 = lerp(a.y1, b.y1, t)
936 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
937 local xs = screen_width / 1280.0
938 local ys = screen_height / 720.0
942 x1 = round(xs * (x + width)),
943 y1 = round(ys * (y + height))
947 function prepare_sbs_scene(state, scene, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution, hq)
948 scene.input0.input:display(0)
949 scene.input1.input:display(COMMENTATOR_SIGNAL_NUM)
951 -- Both inputs are the same size (true side-by-side).
952 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
953 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
955 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
957 if transition_type == NO_TRANSITION then
959 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
961 -- Zooming to/from SBS view into or out of a single view.
962 assert(transition_type == ZOOM_TRANSITION)
964 if src_signal == SBS_SIGNAL_NUM then
968 assert(dst_signal == SBS_SIGNAL_NUM)
973 if signal == INPUT0_SIGNAL_NUM then
974 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
975 elseif signal == COMMENTATOR_SIGNAL_NUM then
976 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
980 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
981 place_rectangle_with_affine(scene.input0, pos0, affine_param, screen_width, screen_height, input_resolution[0].width, input_resolution[0].height, hq)
982 place_rectangle_with_affine(scene.input1, pos1, affine_param, screen_width, screen_height, input_resolution[1].width, input_resolution[1].height, hq)
985 -- Find the transformation that changes the first rectangle to the second one.
986 function find_affine_param(a, b)
987 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
988 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
992 tx = b.x0 - a.x0 * sx,
993 ty = b.y0 - a.y0 * sy
997 function place_rectangle_with_affine(input, pos, aff, screen_width, screen_height, input_width, input_height, hq)
998 local x0 = pos.x0 * aff.sx + aff.tx
999 local x1 = pos.x1 * aff.sx + aff.tx
1000 local y0 = pos.y0 * aff.sy + aff.ty
1001 local y1 = pos.y1 * aff.sy + aff.ty
1003 place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
1006 function place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
1007 input.padding_effect:set_int("width", screen_width)
1008 input.padding_effect:set_int("height", screen_height)
1011 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
1012 input.resample_effect:choose(ResizeEffect) -- Low-quality resizing.
1013 input.resample_effect:set_int("width", 1)
1014 input.resample_effect:set_int("height", 1)
1015 input.padding_effect:set_int("left", screen_width + 100)
1016 input.padding_effect:set_int("top", screen_height + 100)
1027 srcx0 = -x0 / (x1 - x0)
1031 srcy0 = -y0 / (y1 - y0)
1034 if x1 > screen_width then
1035 srcx1 = (screen_width - x0) / (x1 - x0)
1038 if y1 > screen_height then
1039 srcy1 = (screen_height - y0) / (y1 - y0)
1044 -- High-quality resampling.
1045 local resample_effect = input.resample_effect:choose(ResampleEffect)
1047 local x_subpixel_offset = x0 - math.floor(x0)
1048 local y_subpixel_offset = y0 - math.floor(y0)
1050 -- Resampling must be to an integral number of pixels. Round up,
1051 -- and then add an extra pixel so we have some leeway for the border.
1052 local width = math.ceil(x1 - x0) + 1
1053 local height = math.ceil(y1 - y0) + 1
1054 input.resample_effect:set_int("width", width)
1055 input.resample_effect:set_int("height", height)
1057 -- Correct the discrepancy with zoom. (This will leave a small
1058 -- excess edge of pixels and subpixels, which we'll correct for soon.)
1059 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
1060 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
1061 resample_effect:set_float("zoom_x", zoom_x) -- Use the actual effect specialization; specific to ResampleEffect.
1062 resample_effect:set_float("zoom_y", zoom_y)
1063 resample_effect:set_float("zoom_center_x", 0.0)
1064 resample_effect:set_float("zoom_center_y", 0.0)
1066 -- Padding must also be to a whole-pixel offset.
1067 input.padding_effect:set_int("left", math.floor(x0))
1068 input.padding_effect:set_int("top", math.floor(y0))
1070 -- Correct _that_ discrepancy by subpixel offset in the resampling.
1071 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
1072 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
1074 -- Finally, adjust the border so it is exactly where we want it.
1075 input.padding_effect:set_float("border_offset_left", x_subpixel_offset)
1076 input.padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1077 input.padding_effect:set_float("border_offset_top", y_subpixel_offset)
1078 input.padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1080 -- Lower-quality simple resizing.
1081 input.resample_effect:choose(ResizeEffect)
1083 local width = round(x1 - x0)
1084 local height = round(y1 - y0)
1085 input.resample_effect:set_int("width", width)
1086 input.resample_effect:set_int("height", height)
1088 -- Padding must also be to a whole-pixel offset.
1089 input.padding_effect:set_int("left", math.floor(x0))
1090 input.padding_effect:set_int("top", math.floor(y0))
1092 -- No subpixel stuff.
1093 input.padding_effect:set_float("border_offset_left", 0.0)
1094 input.padding_effect:set_float("border_offset_right", 0.0)
1095 input.padding_effect:set_float("border_offset_top", 0.0)
1096 input.padding_effect:set_float("border_offset_bottom", 0.0)
1100 function prepare_overlay_live(state, scene, t, extra_alpha_factor)
1101 if scene.overlay then
1102 local tt = calc_fade_progress(t, state.overlay_transition_start, state.overlay_transition_end)
1103 local overlay_alpha = state.overlay_alpha_src + tt * (state.overlay_alpha_dst - state.overlay_alpha_src)
1104 overlay_alpha = overlay_alpha * extra_alpha_factor
1105 --print("overlay_alpha=" .. overlay_alpha .. " [" .. state.overlay_alpha_src .. "," .. state.overlay_alpha_dst .. "]@" .. tt)
1106 if t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
1107 state.overlay_enabled = false -- Takes effect next frame.
1108 -- print("Turning off overlay")
1110 scene.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1114 function prepare_overlay_static(scene)
1115 if scene.overlay then
1116 scene.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1120 function calc_zoom_progress(t)
1121 if t < state.transition_start then
1123 elseif t > state.transition_end then
1126 local tt = (t - state.transition_start) / (state.transition_end - state.transition_start)
1128 return math.sin(tt * 3.14159265358 * 0.5)
1132 function calc_fade_progress(t, transition_start, transition_end)
1133 local tt = (t - transition_start) / (transition_end - transition_start)
1136 elseif tt > 1.0 then
1140 -- Make the fade look maybe a tad more natural, by pumping it
1141 -- through a sigmoid function.
1142 tt = 10.0 * tt - 5.0
1143 tt = 1.0 / (1.0 + math.exp(-tt))
1149 { "Reload overlay", reload_cef },
1150 { "Disconnect IPTV", disconnect_iptv },
1151 { "Toggle multiviewer", toggle_multiviewer }