8 #include "cef_capture.h"
10 #include "ffmpeg_capture.h"
12 #include "image_input.h"
13 #include "input_state.h"
14 #include "lua_utils.h"
18 using namespace movit;
21 static bool display(Block *block, lua_State *L, int idx);
23 EffectType current_type(const Block *block)
25 return block->alternatives[block->currently_chosen_alternative]->effect_type;
28 int find_index_of(const Block *block, EffectType val)
30 for (size_t idx = 0; idx < block->alternatives.size(); ++idx) {
31 if (block->alternatives[idx]->effect_type == val) {
38 string get_declaration_point(lua_State *L)
41 lua_getstack(L, 1, &ar);
42 lua_getinfo(L, "nSl", &ar);
44 snprintf(buf, sizeof(buf), "%s:%d", ar.source, ar.currentline);
48 Scene::Scene(Theme *theme, float aspect_nom, float aspect_denom)
49 : theme(theme), aspect_nom(aspect_nom), aspect_denom(aspect_denom), resource_pool(theme->get_resource_pool()) {}
51 size_t Scene::compute_chain_number(bool is_main_chain) const
53 assert(chains.size() > 0);
54 assert(chains.size() % 2 == 0);
55 bitset<256> disabled = find_disabled_blocks(size_t(-1));
57 size_t chain_number = compute_chain_number_for_block(blocks.size() - 1, disabled);
58 assert(chain_number < chains.size() / 2);
60 chain_number += chains.size() / 2;
65 size_t Scene::compute_chain_number_for_block(size_t block_idx, const bitset<256> &disabled) const
67 Block *block = blocks[block_idx];
70 size_t currently_chosen_alternative;
71 if (disabled.test(block_idx)) {
72 // It doesn't matter, so pick the canonical choice
73 // (this is the only one that is actually instantiated).
74 currently_chosen_alternative = block->canonical_alternative;
76 currently_chosen_alternative = block->currently_chosen_alternative;
78 assert(currently_chosen_alternative < block->alternatives.size());
81 assert(block->cardinality_base == 1);
82 chain_number = currently_chosen_alternative;
84 chain_number = compute_chain_number_for_block(block_idx - 1, disabled) + block->cardinality_base * currently_chosen_alternative;
89 bitset<256> Scene::find_disabled_blocks(size_t chain_idx) const
91 assert(blocks.size() < 256);
93 // The find_disabled_blocks() recursion logic needs only one pass by itself,
94 // but the disabler logic is not so smart, so we just run multiple times
95 // until it converges.
96 bitset<256> prev, ret;
98 find_disabled_blocks(chain_idx, blocks.size() - 1, /*currently_disabled=*/false, &ret);
101 // Propagate DISABLE_IF_OTHER_DISABLED constraints (we can always do this).
102 for (Block *block : blocks) {
103 if (ret.test(block->idx)) continue; // Already disabled.
105 EffectType chosen_type = block->alternatives[block->chosen_alternative(chain_idx)]->effect_type;
106 if (chosen_type == IDENTITY_EFFECT) {
111 for (const Block::Disabler &disabler : block->disablers) {
112 Block *other = blocks[disabler.block_idx];
113 EffectType chosen_type = other->alternatives[other->chosen_alternative(chain_idx)]->effect_type;
114 bool other_disabled = ret.test(disabler.block_idx) || chosen_type == IDENTITY_EFFECT;
115 if (other_disabled && disabler.condition == Block::Disabler::DISABLE_IF_OTHER_DISABLED) {
122 // We cannot propagate DISABLE_IF_OTHER_ENABLED in all cases;
123 // the problem is that if A is disabled if B is enabled,
124 // then we cannot disable A unless we actually know for sure
125 // that B _is_ enabled. (E.g., imagine that B is disabled
126 // if C is enabled -- we couldn't disable A before we knew if
127 // C was enabled or not!)
129 // We could probably fix a fair amount of these, but the
130 // primary use case for DISABLE_IF_OTHER_ENABLED is really
131 // mutual exclusion; A must be disabled if B is enabled
132 // _and_ vice versa. These loops cannot be automatically
133 // resolved; it would depend on what A and B is. Thus,
134 // we simply declare this kind of constraint to be a promise
135 // from the user, not something that we'll solve for them.
136 } while (prev != ret);
140 void Scene::find_disabled_blocks(size_t chain_idx, size_t block_idx, bool currently_disabled, bitset<256> *disabled) const
142 if (currently_disabled) {
143 disabled->set(block_idx);
145 Block *block = blocks[block_idx];
146 EffectType chosen_type = block->alternatives[block->chosen_alternative(chain_idx)]->effect_type;
147 for (size_t input_idx = 0; input_idx < block->inputs.size(); ++input_idx) {
148 if (chosen_type == IDENTITY_EFFECT && input_idx > 0) {
149 // Multi-input effect that has been replaced by
150 // IdentityEffect, so every effect but the first are
151 // disabled and will not participate in the chain.
152 find_disabled_blocks(chain_idx, block->inputs[input_idx], /*currently_disabled=*/true, disabled);
154 // Just keep on recursing down.
155 find_disabled_blocks(chain_idx, block->inputs[input_idx], currently_disabled, disabled);
160 bool Scene::is_noncanonical_chain(size_t chain_idx) const
162 bitset<256> disabled = find_disabled_blocks(chain_idx);
163 assert(blocks.size() < 256);
164 for (size_t block_idx = 0; block_idx < blocks.size(); ++block_idx) {
165 Block *block = blocks[block_idx];
166 if (disabled.test(block_idx) && block->chosen_alternative(chain_idx) != block->canonical_alternative) {
170 // Test if we're supposed to be disabled by some other block being enabled;
171 // the disabled bit mask does not fully capture this.
172 if (!disabled.test(block_idx)) {
173 for (const Block::Disabler &disabler : block->disablers) {
174 if (disabler.condition == Block::Disabler::DISABLE_IF_OTHER_ENABLED &&
175 !disabled.test(disabler.block_idx)) {
180 // Auto white balance is always disabled for image inputs.
181 if (block->white_balance_controller_block != nullptr) {
182 const Block *input = block->white_balance_controller_block;
183 if (input->alternatives[input->chosen_alternative(chain_idx)]->effect_type == IMAGE_INPUT) {
192 int Scene::add_input(lua_State* L)
194 assert(lua_gettop(L) == 1 || lua_gettop(L) == 2);
195 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
197 Block *block = new Block;
198 block->declaration_point = get_declaration_point(L);
199 block->idx = scene->blocks.size();
200 if (lua_gettop(L) == 1) {
201 // No parameter given, so a flexible input.
202 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR));
203 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_WITH_DEINTERLACE));
204 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_PLANAR));
205 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_BGRA));
206 block->alternatives.emplace_back(new EffectBlueprint(IMAGE_INPUT));
208 // Input of a given type. We'll specialize it here, plus connect the input as given.
209 if (lua_isnumber(L, 2)) {
210 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR));
211 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_WITH_DEINTERLACE));
213 } else if (luaL_testudata(L, 2, "HTMLInput")) {
214 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_BGRA));
216 } else if (luaL_testudata(L, 2, "VideoInput")) {
217 FFmpegCapture *capture = *(FFmpegCapture **)luaL_checkudata(L, 2, "VideoInput");
218 if (capture->get_current_pixel_format() == bmusb::PixelFormat_8BitYCbCrPlanar) {
219 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_PLANAR));
221 assert(capture->get_current_pixel_format() == bmusb::PixelFormat_8BitBGRA);
222 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_BGRA));
224 } else if (luaL_testudata(L, 2, "ImageInput")) {
225 block->alternatives.emplace_back(new EffectBlueprint(IMAGE_INPUT));
227 luaL_error(L, "add_input() called with something that's not a signal (a signal number, a HTML input, or a VideoInput)");
229 bool ok = display(block, L, 2);
232 block->is_input = true;
233 scene->blocks.push_back(block);
235 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
238 Block *Scene::find_block_from_arg(lua_State *L, Scene *scene, int idx)
240 if (luaL_testudata(L, idx, "Block")) {
241 return *(Block **)luaL_checkudata(L, idx, "Block");
243 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, idx, "EffectBlueprint");
245 // Search through all the blocks to figure out which one contains this effect.
246 for (Block *block : scene->blocks) {
247 if (find(block->alternatives.begin(), block->alternatives.end(), blueprint) != block->alternatives.end()) {
251 luaL_error(L, "Input effect in parameter #%d has not been added to this scene", idx - 1);
252 return nullptr; // Dead code.
256 void Scene::find_inputs_for_block(lua_State *L, Scene *scene, Block *block, int first_input_idx)
258 if (lua_gettop(L) == first_input_idx - 1) {
259 // Implicitly the last added effect.
260 assert(!scene->blocks.empty());
261 block->inputs.push_back(scene->blocks.size() - 1);
265 for (int idx = first_input_idx; idx <= lua_gettop(L); ++idx) {
266 block->inputs.push_back(find_block_from_arg(L, scene, idx)->idx);
270 int Scene::add_effect(lua_State* L)
272 assert(lua_gettop(L) >= 2);
273 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
275 Block *block = new Block;
276 block->declaration_point = get_declaration_point(L);
277 block->idx = scene->blocks.size();
279 if (lua_istable(L, 2)) {
280 size_t len = lua_objlen(L, 2);
281 for (size_t i = 0; i < len; ++i) {
282 lua_rawgeti(L, 2, i + 1);
283 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, -1, "EffectBlueprint");
284 block->alternatives.push_back(blueprint);
288 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 2, "EffectBlueprint");
289 block->alternatives.push_back(blueprint);
292 int identity_index = find_index_of(block, IDENTITY_EFFECT);
293 if (identity_index == -1) {
294 block->canonical_alternative = 0;
296 // Pick the IdentityEffect as the canonical alternative, in case it
297 // helps us disable more stuff.
298 block->canonical_alternative = identity_index;
301 find_inputs_for_block(L, scene, block);
302 scene->blocks.push_back(block);
304 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
307 int Scene::add_optional_effect(lua_State* L)
309 assert(lua_gettop(L) >= 2);
310 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
312 Block *block = new Block;
313 block->declaration_point = get_declaration_point(L);
314 block->idx = scene->blocks.size();
316 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 2, "EffectBlueprint");
317 block->alternatives.push_back(blueprint);
319 // An IdentityEffect will be the alternative for when the effect is disabled.
320 block->alternatives.push_back(new EffectBlueprint(IDENTITY_EFFECT));
322 block->canonical_alternative = 1;
324 find_inputs_for_block(L, scene, block);
325 scene->blocks.push_back(block);
327 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
330 const Block *Scene::find_root_input_block(lua_State *L, const Block *block)
332 if (block->is_input) {
333 assert(block->inputs.size() == 0);
337 const Block *ret = nullptr;
338 for (size_t input_idx : block->inputs) {
339 const Block *parent = find_root_input_block(L, blocks[input_idx]);
340 if (parent != nullptr) {
341 if (ret != nullptr) {
342 luaL_error(L, "add_auto_white_balance() was connected to more than one input");
350 int Scene::add_auto_white_balance(lua_State* L)
352 assert(lua_gettop(L) >= 1);
353 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
355 Block *block = new Block;
356 block->declaration_point = get_declaration_point(L);
357 block->idx = scene->blocks.size();
359 block->alternatives.push_back(new EffectBlueprint(WHITE_BALANCE_EFFECT));
360 block->alternatives.push_back(new EffectBlueprint(IDENTITY_EFFECT));
362 block->canonical_alternative = 1;
364 if (lua_gettop(L) == 1) {
365 // The last added effect is implicitly both the input and gives the white balance controller.
366 assert(!scene->blocks.empty());
367 block->inputs.push_back(scene->blocks.size() - 1);
368 block->white_balance_controller_block = scene->find_root_input_block(L, block);
369 } else if (lua_gettop(L) == 2) {
370 // The given effect is both the input and the white balance controller.
371 block->inputs.push_back(find_block_from_arg(L, scene, 2)->idx);
372 block->white_balance_controller_block = scene->find_root_input_block(L, block);
373 } else if (lua_gettop(L) == 3) {
374 // We have explicit input and white balance controller.
375 block->inputs.push_back(find_block_from_arg(L, scene, 2)->idx);
376 block->white_balance_controller_block = find_block_from_arg(L, scene, 3);
378 luaL_error(L, "add_auto_white_balance([input], [white_balance_controller]) takes zero, one or two arguments");
380 if (block->white_balance_controller_block == nullptr || !block->white_balance_controller_block->is_input) {
381 luaL_error(L, "add_auto_white_balance() does not get its white balance from an input");
384 scene->blocks.push_back(block);
386 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
389 Effect *Scene::instantiate_effects(const Block *block, size_t chain_idx, Scene::Instantiation *instantiation)
391 // Find the chosen alternative for this block in this instance.
392 EffectType chosen_type = block->alternatives[block->chosen_alternative(chain_idx)]->effect_type;
394 vector<Effect *> inputs;
395 for (size_t input_idx : block->inputs) {
396 inputs.push_back(instantiate_effects(blocks[input_idx], chain_idx, instantiation));
398 // As a special case, we allow IdentityEffect to take only one input
399 // even if the other alternative (or alternatives) is multi-input.
400 // Thus, even if there are more than one inputs, instantiate only
402 if (chosen_type == IDENTITY_EFFECT) {
408 switch (chosen_type) {
409 case LIVE_INPUT_YCBCR:
410 case LIVE_INPUT_YCBCR_WITH_DEINTERLACE:
411 case LIVE_INPUT_YCBCR_PLANAR:
412 case LIVE_INPUT_BGRA: {
413 bool deinterlace = (chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE);
414 bool override_bounce = !deinterlace; // For most chains, this will be fine. Reconsider if we see real problems somewhere; it's better than having the user try to understand it.
415 bmusb::PixelFormat pixel_format;
416 if (chosen_type == LIVE_INPUT_BGRA) {
417 pixel_format = bmusb::PixelFormat_8BitBGRA;
418 } else if (chosen_type == LIVE_INPUT_YCBCR_PLANAR) {
419 pixel_format = bmusb::PixelFormat_8BitYCbCrPlanar;
420 } else if (global_flags.ten_bit_input) {
421 pixel_format = bmusb::PixelFormat_10BitYCbCr;
423 pixel_format = bmusb::PixelFormat_8BitYCbCr;
425 LiveInputWrapper *input = new LiveInputWrapper(theme, instantiation->chain.get(), pixel_format, override_bounce, deinterlace, /*user_connectable=*/true);
426 effect = input->get_effect(); // Adds itself to the chain, so no need to call add_effect().
427 instantiation->inputs.emplace(block->idx, input);
431 ImageInput *input = new ImageInput;
432 instantiation->chain->add_input(input);
433 instantiation->image_inputs.emplace(block->idx, input);
438 effect = instantiate_effect(instantiation->chain.get(), chosen_type);
439 instantiation->chain->add_effect(effect, inputs);
442 instantiation->effects.emplace(block->idx, effect);
446 int Scene::finalize(lua_State* L)
448 bool only_one_mode = false;
449 bool chosen_mode = false;
450 if (lua_gettop(L) == 2) {
451 only_one_mode = true;
452 chosen_mode = checkbool(L, 2);
454 assert(lua_gettop(L) == 1);
456 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
457 Theme *theme = get_theme_updata(L);
460 for (Block *block : scene->blocks) {
461 block->cardinality_base = base;
462 base *= block->alternatives.size();
465 const size_t cardinality = base;
466 size_t real_cardinality = 0;
467 for (size_t chain_idx = 0; chain_idx < cardinality; ++chain_idx) {
468 if (!scene->is_noncanonical_chain(chain_idx)) {
472 const size_t total_cardinality = real_cardinality * (only_one_mode ? 1 : 2);
473 if (total_cardinality > 200) {
474 print_warning(L, "The given Scene will instantiate %zu different versions. This will take a lot of time and RAM to compile; see if you could limit some options by e.g. locking the input type in some cases (by giving a fixed input to add_input()).\n",
478 Block *output_block = scene->blocks.back();
479 for (bool is_main_chain : { false, true }) {
480 for (size_t chain_idx = 0; chain_idx < cardinality; ++chain_idx) {
481 if ((only_one_mode && is_main_chain != chosen_mode) ||
482 scene->is_noncanonical_chain(chain_idx)) {
483 scene->chains.emplace_back();
487 Scene::Instantiation instantiation;
488 instantiation.chain.reset(new EffectChain(scene->aspect_nom, scene->aspect_denom, theme->get_resource_pool()));
489 scene->instantiate_effects(output_block, chain_idx, &instantiation);
491 add_outputs_and_finalize(instantiation.chain.get(), is_main_chain);
492 scene->chains.emplace_back(move(instantiation));
498 int find_card_to_connect(Theme *theme, lua_State *L, const Block *block)
500 if (block->signal_type_to_connect == Block::CONNECT_SIGNAL) {
501 return theme->map_signal_to_card(block->signal_to_connect);
503 } else if (block->signal_type_to_connect == Block::CONNECT_CEF) {
504 return block->cef_to_connect->get_card_index();
506 } else if (block->signal_type_to_connect == Block::CONNECT_VIDEO) {
507 return block->video_to_connect->get_card_index();
508 } else if (block->signal_type_to_connect == Block::CONNECT_NONE) {
509 luaL_error(L, "An input in a scene was not connected to anything (forgot to call display())");
516 std::pair<movit::EffectChain *, std::function<void()>>
517 Scene::get_chain(Theme *theme, lua_State *L, unsigned num, const InputState &input_state)
519 // For video inputs, pick the right interlaced/progressive version
520 // based on the current state of the signals.
521 InputStateInfo info(input_state);
522 for (Block *block : blocks) {
523 if (block->is_input && block->signal_type_to_connect == Block::CONNECT_SIGNAL) {
524 EffectType chosen_type = current_type(block);
525 assert(chosen_type == LIVE_INPUT_YCBCR || chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE);
526 int card_index = theme->map_signal_to_card(block->signal_to_connect);
527 if (info.last_interlaced[card_index]) {
528 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR_WITH_DEINTERLACE);
530 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR);
535 // Find all auto white balance blocks, turn on and off the effect as needed,
536 // and fetch the actual white balance set (it is stored in Theme).
537 map<Block *, array<float, 3>> white_balance;
538 for (size_t block_idx = 0; block_idx < blocks.size(); ++block_idx) {
539 Block *block = blocks[block_idx];
540 const Block *input = block->white_balance_controller_block;
541 if (input == nullptr) {
542 continue; // Not an auto white balance block.
545 EffectType chosen_type = current_type(input);
546 if (chosen_type == IMAGE_INPUT) {
547 // Image inputs never get white balance applied.
548 block->currently_chosen_alternative = find_index_of(block, IDENTITY_EFFECT);
552 assert(chosen_type == LIVE_INPUT_YCBCR ||
553 chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE ||
554 chosen_type == LIVE_INPUT_YCBCR_PLANAR ||
555 chosen_type == LIVE_INPUT_BGRA);
556 int card_idx = find_card_to_connect(theme, L, input);
557 RGBTriplet wb = theme->get_white_balance_for_card(card_idx);
558 if (fabs(wb.r - 1.0) < 1e-3 && fabs(wb.g - 1.0) < 1e-3 && fabs(wb.b - 1.0) < 1e-3) {
559 // Neutral white balance.
560 block->currently_chosen_alternative = find_index_of(block, IDENTITY_EFFECT);
562 block->currently_chosen_alternative = find_index_of(block, WHITE_BALANCE_EFFECT);
563 white_balance.emplace(block, array<float, 3>{ wb.r, wb.g, wb.b });
567 // Pick out the right chain based on the current selections,
568 // and snapshot all the set variables so that we can set them
569 // in the prepare function even if they're being changed by
570 // the Lua code later.
571 bool is_main_chain = (num == 0);
572 size_t chain_idx = compute_chain_number(is_main_chain);
573 if (is_noncanonical_chain(chain_idx)) {
574 // This should be due to promise_to_disable_if_enabled(). Find out what
575 // happened, to give the user some help.
576 bitset<256> disabled = find_disabled_blocks(chain_idx);
577 for (size_t block_idx = 0; block_idx < blocks.size(); ++block_idx) {
578 Block *block = blocks[block_idx];
579 if (disabled.test(block_idx)) continue;
580 for (const Block::Disabler &disabler : block->disablers) {
581 if (disabler.condition == Block::Disabler::DISABLE_IF_OTHER_ENABLED &&
582 !disabled.test(disabler.block_idx)) {
583 fprintf(stderr, "Promise declared at %s violated.\n", disabler.declaration_point.c_str());
588 assert(false); // Something else happened, seemingly.
590 const Scene::Instantiation &instantiation = chains[chain_idx];
591 EffectChain *effect_chain = instantiation.chain.get();
593 map<LiveInputWrapper *, int> cards_to_connect;
594 map<ImageInput *, string> images_to_select;
595 map<pair<Effect *, string>, int> int_to_set;
596 map<pair<Effect *, string>, float> float_to_set;
597 map<pair<Effect *, string>, array<float, 3>> vec3_to_set;
598 map<pair<Effect *, string>, array<float, 4>> vec4_to_set;
599 for (const auto &index_and_input : instantiation.inputs) {
600 Block *block = blocks[index_and_input.first];
601 EffectType chosen_type = current_type(block);
602 if (chosen_type == LIVE_INPUT_YCBCR ||
603 chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE ||
604 chosen_type == LIVE_INPUT_YCBCR_PLANAR ||
605 chosen_type == LIVE_INPUT_BGRA) {
606 LiveInputWrapper *input = index_and_input.second;
607 cards_to_connect.emplace(input, find_card_to_connect(theme, L, block));
610 for (const auto &index_and_input : instantiation.image_inputs) {
611 Block *block = blocks[index_and_input.first];
612 ImageInput *input = index_and_input.second;
613 if (current_type(block) == IMAGE_INPUT) {
614 images_to_select.emplace(input, block->pathname);
617 for (const auto &index_and_effect : instantiation.effects) {
618 Block *block = blocks[index_and_effect.first];
619 Effect *effect = index_and_effect.second;
621 bool missing_width = (current_type(block) == RESIZE_EFFECT ||
622 current_type(block) == RESAMPLE_EFFECT ||
623 current_type(block) == PADDING_EFFECT);
624 bool missing_height = missing_width;
626 // Get the effects currently set on the block.
627 if (current_type(block) != IDENTITY_EFFECT) { // Ignore settings on optional effects.
628 if (block->int_parameters.count("width") && block->int_parameters["width"] > 0) {
629 missing_width = false;
631 if (block->int_parameters.count("height") && block->int_parameters["height"] > 0) {
632 missing_height = false;
634 for (const auto &key_and_tuple : block->int_parameters) {
635 int_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
637 for (const auto &key_and_tuple : block->float_parameters) {
638 float_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
640 if (white_balance.count(block)) {
641 vec3_to_set.emplace(make_pair(effect, "neutral_color"), white_balance[block]);
643 for (const auto &key_and_tuple : block->vec3_parameters) {
644 vec3_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
646 for (const auto &key_and_tuple : block->vec4_parameters) {
647 vec4_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
651 // Parameters set on the blueprint itself override those that are set for the block,
652 // so they are set afterwards.
653 if (!block->alternatives.empty()) {
654 EffectBlueprint *blueprint = block->alternatives[block->currently_chosen_alternative];
655 if (blueprint->int_parameters.count("width") && blueprint->int_parameters["width"] > 0) {
656 missing_width = false;
658 if (blueprint->int_parameters.count("height") && blueprint->int_parameters["height"] > 0) {
659 missing_height = false;
661 for (const auto &key_and_tuple : blueprint->int_parameters) {
662 int_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
664 for (const auto &key_and_tuple : blueprint->float_parameters) {
665 float_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
667 for (const auto &key_and_tuple : blueprint->vec3_parameters) {
668 vec3_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
670 for (const auto &key_and_tuple : blueprint->vec4_parameters) {
671 vec4_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
675 if (missing_width || missing_height) {
676 fprintf(stderr, "WARNING: Unset or nonpositive width/height for effect declared at %s "
677 "when getting scene for signal %u; setting to 1x1 to avoid crash.\n",
678 block->declaration_point.c_str(), num);
679 int_to_set[make_pair(effect, "width")] = 1;
680 int_to_set[make_pair(effect, "height")] = 1;
686 auto setup_chain = [L, theme, cards_to_connect, images_to_select, int_to_set, float_to_set, vec3_to_set, vec4_to_set, input_state]{
687 lock_guard<mutex> lock(theme->m);
689 // Set up state, including connecting cards.
690 for (const auto &input_and_card : cards_to_connect) {
691 LiveInputWrapper *input = input_and_card.first;
692 input->connect_card(input_and_card.second, input_state);
694 for (const auto &input_and_filename : images_to_select) {
695 input_and_filename.first->switch_image(input_and_filename.second);
697 for (const auto &effect_and_key_and_value : int_to_set) {
698 Effect *effect = effect_and_key_and_value.first.first;
699 const string &key = effect_and_key_and_value.first.second;
700 const int value = effect_and_key_and_value.second;
701 if (!effect->set_int(key, value)) {
702 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), value);
705 for (const auto &effect_and_key_and_value : float_to_set) {
706 Effect *effect = effect_and_key_and_value.first.first;
707 const string &key = effect_and_key_and_value.first.second;
708 const float value = effect_and_key_and_value.second;
709 if (!effect->set_float(key, value)) {
710 luaL_error(L, "Effect refused set_float(\"%s\", %f) (invalid key?)", key.c_str(), value);
713 for (const auto &effect_and_key_and_value : vec3_to_set) {
714 Effect *effect = effect_and_key_and_value.first.first;
715 const string &key = effect_and_key_and_value.first.second;
716 const float *value = effect_and_key_and_value.second.data();
717 if (!effect->set_vec3(key, value)) {
718 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
719 value[0], value[1], value[2]);
722 for (const auto &effect_and_key_and_value : vec4_to_set) {
723 Effect *effect = effect_and_key_and_value.first.first;
724 const string &key = effect_and_key_and_value.first.second;
725 const float *value = effect_and_key_and_value.second.data();
726 if (!effect->set_vec4(key, value)) {
727 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
728 value[0], value[1], value[2], value[3]);
732 return make_pair(effect_chain, move(setup_chain));
735 bool display(Block *block, lua_State *L, int idx)
737 if (lua_isnumber(L, idx)) {
738 int signal_idx = luaL_checknumber(L, idx);
739 block->signal_type_to_connect = Block::CONNECT_SIGNAL;
740 block->signal_to_connect = signal_idx;
741 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR); // Will be changed to deinterlaced at get_chain() time if needed.
744 } else if (luaL_testudata(L, idx, "HTMLInput")) {
745 CEFCapture *capture = *(CEFCapture **)luaL_checkudata(L, idx, "HTMLInput");
746 block->signal_type_to_connect = Block::CONNECT_CEF;
747 block->cef_to_connect = capture;
748 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_BGRA);
749 assert(capture->get_current_pixel_format() == bmusb::PixelFormat_8BitBGRA);
752 } else if (luaL_testudata(L, idx, "VideoInput")) {
753 FFmpegCapture *capture = *(FFmpegCapture **)luaL_checkudata(L, idx, "VideoInput");
754 block->signal_type_to_connect = Block::CONNECT_VIDEO;
755 block->video_to_connect = capture;
756 if (capture->get_current_pixel_format() == bmusb::PixelFormat_8BitYCbCrPlanar) {
757 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR_PLANAR);
759 assert(capture->get_current_pixel_format() == bmusb::PixelFormat_8BitBGRA);
760 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_BGRA);
763 } else if (luaL_testudata(L, idx, "ImageInput")) {
764 ImageInput *image = *(ImageInput **)luaL_checkudata(L, idx, "ImageInput");
765 block->signal_type_to_connect = Block::CONNECT_NONE;
766 block->currently_chosen_alternative = find_index_of(block, IMAGE_INPUT);
767 block->pathname = image->get_pathname();
774 int Block_display(lua_State* L)
776 assert(lua_gettop(L) == 2);
777 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
778 if (!block->is_input) {
779 luaL_error(L, "display() called on something that isn't an input");
782 bool ok = display(block, L, 2);
784 luaL_error(L, "display() called with something that's not a signal (a signal number, a HTML input, or a VideoInput)");
787 if (block->currently_chosen_alternative == -1) {
788 luaL_error(L, "display() called on an input whose type was fixed at construction time, with a signal of different type");
794 int Block_choose(lua_State* L)
796 assert(lua_gettop(L) == 2);
797 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
798 int alternative_idx = -1;
799 if (lua_isnumber(L, 2)) {
800 alternative_idx = luaL_checknumber(L, 2);
801 } else if (lua_istable(L, 2)) {
802 // See if it's an Effect metatable (e.g. foo:choose(ResampleEffect))
803 lua_getfield(L, 2, "__effect_type_id");
804 if (lua_isnumber(L, -1)) {
805 EffectType effect_type = EffectType(luaL_checknumber(L, -1));
806 alternative_idx = find_index_of(block, effect_type);
811 if (alternative_idx == -1) {
812 luaL_error(L, "choose() called with something that was not an index or an effect type (e.g. ResampleEffect) that was part of the alternatives");
815 assert(alternative_idx >= 0);
816 assert(size_t(alternative_idx) < block->alternatives.size());
817 block->currently_chosen_alternative = alternative_idx;
819 return wrap_lua_existing_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", block->alternatives[alternative_idx]);
822 int Block_enable(lua_State *L)
824 assert(lua_gettop(L) == 1);
825 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
827 if (block->alternatives.size() != 2 ||
828 block->alternatives[1]->effect_type != IDENTITY_EFFECT) {
829 luaL_error(L, "enable() called on something that wasn't added with add_optional_effect()");
831 block->currently_chosen_alternative = 0; // The actual effect.
835 int Block_enable_if(lua_State *L)
837 assert(lua_gettop(L) == 2);
838 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
840 if (block->alternatives.size() != 2 ||
841 block->alternatives[1]->effect_type != IDENTITY_EFFECT) {
842 luaL_error(L, "enable_if() called on something that wasn't added with add_optional_effect()");
844 bool enabled = checkbool(L, 2);
845 block->currently_chosen_alternative = enabled ? 0 : 1;
849 int Block_disable(lua_State *L)
851 assert(lua_gettop(L) == 1);
852 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
854 block->currently_chosen_alternative = find_index_of(block, IDENTITY_EFFECT);
855 if (block->currently_chosen_alternative == -1) {
856 luaL_error(L, "disable() called on something that didn't have an IdentityEffect fallback (try add_optional_effect())");
858 assert(block->currently_chosen_alternative != -1);
862 int Block_always_disable_if_disabled(lua_State *L)
864 assert(lua_gettop(L) == 2);
865 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
866 Block *disabler_block = *(Block **)luaL_checkudata(L, 2, "Block");
868 int my_alternative = find_index_of(block, IDENTITY_EFFECT);
869 int their_alternative = find_index_of(disabler_block, IDENTITY_EFFECT);
870 if (my_alternative == -1) {
871 luaL_error(L, "always_disable_if_disabled() called on something that didn't have an IdentityEffect fallback (try add_optional_effect())");
873 if (their_alternative == -1) {
874 luaL_error(L, "always_disable_if_disabled() with an argument that didn't have an IdentityEffect fallback (try add_optional_effect())");
877 // The declaration point isn't actually used, but it's nice for completeness.
878 block->disablers.push_back(Block::Disabler{ disabler_block->idx, Block::Disabler::DISABLE_IF_OTHER_DISABLED, get_declaration_point(L) });
884 int Block_promise_to_disable_if_enabled(lua_State *L)
886 assert(lua_gettop(L) == 2);
887 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
888 Block *disabler_block = *(Block **)luaL_checkudata(L, 2, "Block");
890 int my_alternative = find_index_of(block, IDENTITY_EFFECT);
891 int their_alternative = find_index_of(disabler_block, IDENTITY_EFFECT);
892 if (my_alternative == -1) {
893 luaL_error(L, "promise_to_disable_if_enabled() called on something that didn't have an IdentityEffect fallback (try add_optional_effect())");
895 if (their_alternative == -1) {
896 luaL_error(L, "promise_to_disable_if_enabled() with an argument that didn't have an IdentityEffect fallback (try add_optional_effect())");
899 block->disablers.push_back(Block::Disabler{ disabler_block->idx, Block::Disabler::DISABLE_IF_OTHER_ENABLED, get_declaration_point(L) });
905 int Block_set_int(lua_State *L)
907 assert(lua_gettop(L) == 3);
908 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
909 string key = checkstdstring(L, 2);
910 float value = luaL_checknumber(L, 3);
912 // TODO: check validity already here, if possible?
913 block->int_parameters[key] = value;
918 int Block_set_float(lua_State *L)
920 assert(lua_gettop(L) == 3);
921 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
922 string key = checkstdstring(L, 2);
923 float value = luaL_checknumber(L, 3);
925 // TODO: check validity already here, if possible?
926 block->float_parameters[key] = value;
931 int Block_set_vec3(lua_State *L)
933 assert(lua_gettop(L) == 5);
934 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
935 string key = checkstdstring(L, 2);
937 v[0] = luaL_checknumber(L, 3);
938 v[1] = luaL_checknumber(L, 4);
939 v[2] = luaL_checknumber(L, 5);
941 // TODO: check validity already here, if possible?
942 block->vec3_parameters[key] = v;
947 int Block_set_vec4(lua_State *L)
949 assert(lua_gettop(L) == 6);
950 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
951 string key = checkstdstring(L, 2);
953 v[0] = luaL_checknumber(L, 3);
954 v[1] = luaL_checknumber(L, 4);
955 v[2] = luaL_checknumber(L, 5);
956 v[3] = luaL_checknumber(L, 6);
958 // TODO: check validity already here, if possible?
959 block->vec4_parameters[key] = v;