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 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 Scene::Scene(Theme *theme, float aspect_nom, float aspect_denom)
39 : theme(theme), aspect_nom(aspect_nom), aspect_denom(aspect_denom), resource_pool(theme->get_resource_pool()) {}
41 size_t Scene::compute_chain_number(bool is_main_chain) const
43 assert(chains.size() > 0);
44 assert(chains.size() % 2 == 0);
45 size_t chain_number = compute_chain_number_for_block(blocks.size() - 1);
46 assert(chain_number < chains.size() / 2);
48 chain_number += chains.size() / 2;
53 size_t Scene::compute_chain_number_for_block(size_t block_idx) const
55 Block *block = blocks[block_idx];
58 assert(block->cardinality_base == 1);
59 chain_number = block->currently_chosen_alternative;
61 chain_number = compute_chain_number_for_block(block_idx - 1) + block->cardinality_base * block->currently_chosen_alternative;
63 assert(block->currently_chosen_alternative < int(block->alternatives.size()));
67 int Scene::add_input(lua_State* L)
69 assert(lua_gettop(L) == 1 || lua_gettop(L) == 2);
70 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
72 Block *block = new Block;
73 block->idx = scene->blocks.size();
74 if (lua_gettop(L) == 1) {
75 // No parameter given, so a flexible input.
76 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR));
77 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_WITH_DEINTERLACE));
78 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_PLANAR));
79 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_BGRA));
80 block->alternatives.emplace_back(new EffectBlueprint(IMAGE_INPUT));
82 // Input of a given type. We'll specialize it here, plus connect the input as given.
83 if (lua_isnumber(L, 2)) {
84 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR));
85 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_WITH_DEINTERLACE));
87 } else if (luaL_testudata(L, 2, "HTMLInput")) {
88 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_BGRA));
90 } else if (luaL_testudata(L, 2, "VideoInput")) {
91 FFmpegCapture *capture = *(FFmpegCapture **)luaL_checkudata(L, 2, "VideoInput");
92 if (capture->get_current_pixel_format() == bmusb::PixelFormat_8BitYCbCrPlanar) {
93 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_YCBCR_PLANAR));
95 assert(capture->get_current_pixel_format() == bmusb::PixelFormat_8BitBGRA);
96 block->alternatives.emplace_back(new EffectBlueprint(LIVE_INPUT_BGRA));
98 } else if (luaL_testudata(L, 2, "ImageInput")) {
99 block->alternatives.emplace_back(new EffectBlueprint(IMAGE_INPUT));
101 luaL_error(L, "add_input() called with something that's not a signal (a signal number, a HTML input, or a VideoInput)");
103 bool ok = display(block, L, 2);
106 block->is_input = true;
107 scene->blocks.push_back(block);
109 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
112 int Scene::add_effect(lua_State* L)
114 assert(lua_gettop(L) >= 2);
115 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
117 Block *block = new Block;
118 block->idx = scene->blocks.size();
120 if (lua_istable(L, 2)) {
121 size_t len = lua_objlen(L, 2);
122 for (size_t i = 0; i < len; ++i) {
123 lua_rawgeti(L, 2, i + 1);
124 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, -1, "EffectBlueprint");
125 block->alternatives.push_back(blueprint);
129 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 2, "EffectBlueprint");
130 block->alternatives.push_back(blueprint);
134 if (lua_gettop(L) == 2) {
135 assert(!scene->blocks.empty());
136 block->inputs.push_back(scene->blocks.size() - 1);
138 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
139 Block *input_block = nullptr;
140 if (luaL_testudata(L, idx, "Block")) {
141 input_block = *(Block **)luaL_checkudata(L, idx, "Block");
143 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, idx, "EffectBlueprint");
145 // Search through all the blocks to figure out which one contains this effect.
146 for (Block *block : scene->blocks) {
147 if (find(block->alternatives.begin(), block->alternatives.end(), blueprint) != block->alternatives.end()) {
152 if (input_block == nullptr) {
153 luaL_error(L, "Input effect in parameter #%d has not been added to this scene", idx - 1);
156 block->inputs.push_back(input_block->idx);
160 scene->blocks.push_back(block);
162 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
165 int Scene::add_optional_effect(lua_State* L)
167 assert(lua_gettop(L) >= 2);
168 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
170 // NOTE: We only support effects with a single parent, since that's what IdentityEffect does.
171 Block *block = new Block;
172 block->idx = scene->blocks.size();
174 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 2, "EffectBlueprint");
175 block->alternatives.push_back(blueprint);
177 // An IdentityEffect will be the alternative for when the effect is disabled.
178 block->alternatives.push_back(new EffectBlueprint(IDENTITY_EFFECT));
180 block->inputs.push_back(scene->blocks.size() - 1);
181 scene->blocks.push_back(block);
183 return wrap_lua_existing_object_nonowned<Block>(L, "Block", block);
186 Effect *Scene::instantiate_effects(const Block *block, size_t chain_idx, Scene::Instantiation *instantiation)
188 vector<Effect *> inputs;
189 for (size_t input_idx : block->inputs) {
190 inputs.push_back(instantiate_effects(blocks[input_idx], chain_idx, instantiation));
193 // Find the chosen alternative for this block in this instance.
194 EffectType chosen_type = block->alternatives[block->chosen_alternative(chain_idx)]->effect_type;
197 switch (chosen_type) {
198 case LIVE_INPUT_YCBCR:
199 case LIVE_INPUT_YCBCR_WITH_DEINTERLACE:
200 case LIVE_INPUT_YCBCR_PLANAR:
201 case LIVE_INPUT_BGRA: {
202 bool deinterlace = (chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE);
203 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.
204 bmusb::PixelFormat pixel_format;
205 if (chosen_type == LIVE_INPUT_BGRA) {
206 pixel_format = bmusb::PixelFormat_8BitBGRA;
207 } else if (chosen_type == LIVE_INPUT_YCBCR_PLANAR) {
208 pixel_format = bmusb::PixelFormat_8BitYCbCrPlanar;
209 } else if (global_flags.ten_bit_input) {
210 pixel_format = bmusb::PixelFormat_10BitYCbCr;
212 pixel_format = bmusb::PixelFormat_8BitYCbCr;
214 LiveInputWrapper *input = new LiveInputWrapper(theme, instantiation->chain.get(), pixel_format, override_bounce, deinterlace, /*user_connectable=*/true);
215 effect = input->get_effect(); // Adds itself to the chain, so no need to call add_effect().
216 instantiation->inputs.emplace(block->idx, input);
220 ImageInput *input = new ImageInput;
221 instantiation->chain->add_input(input);
222 instantiation->image_inputs.emplace(block->idx, input);
227 effect = instantiate_effect(instantiation->chain.get(), chosen_type);
228 instantiation->chain->add_effect(effect, inputs);
231 instantiation->effects.emplace(block->idx, effect);
235 int Scene::finalize(lua_State* L)
237 bool only_one_mode = false;
238 bool chosen_mode = false;
239 if (lua_gettop(L) == 2) {
240 only_one_mode = true;
241 chosen_mode = checkbool(L, 2);
243 assert(lua_gettop(L) == 1);
245 Scene *scene = (Scene *)luaL_checkudata(L, 1, "Scene");
246 Theme *theme = get_theme_updata(L);
249 for (Block *block : scene->blocks) {
250 block->cardinality_base = base;
251 base *= block->alternatives.size();
254 const size_t cardinality = base;
255 const size_t total_cardinality = cardinality * (only_one_mode ? 1 : 2);
256 if (total_cardinality > 200) {
257 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",
261 Block *output_block = scene->blocks.back();
262 for (bool is_main_chain : { false, true }) {
263 for (size_t chain_idx = 0; chain_idx < cardinality; ++chain_idx) {
264 if (only_one_mode && is_main_chain != chosen_mode) {
265 scene->chains.emplace_back();
269 Scene::Instantiation instantiation;
270 instantiation.chain.reset(new EffectChain(scene->aspect_nom, scene->aspect_denom, theme->get_resource_pool()));
271 scene->instantiate_effects(output_block, chain_idx, &instantiation);
273 add_outputs_and_finalize(instantiation.chain.get(), is_main_chain);
274 scene->chains.emplace_back(move(instantiation));
280 std::pair<movit::EffectChain *, std::function<void()>>
281 Scene::get_chain(Theme *theme, lua_State *L, unsigned num, const InputState &input_state)
283 // For video inputs, pick the right interlaced/progressive version
284 // based on the current state of the signals.
285 InputStateInfo info(input_state);
286 for (Block *block : blocks) {
287 if (block->is_input && block->signal_type_to_connect == Block::CONNECT_SIGNAL) {
288 EffectType chosen_type = current_type(block);
289 assert(chosen_type == LIVE_INPUT_YCBCR || chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE);
290 if (info.last_interlaced[block->signal_to_connect]) {
291 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR_WITH_DEINTERLACE);
293 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR);
298 // Pick out the right chain based on the current selections,
299 // and snapshot all the set variables so that we can set them
300 // in the prepare function even if they're being changed by
301 // the Lua code later.
302 bool is_main_chain = (num == 0);
303 size_t chain_idx = compute_chain_number(is_main_chain);
304 const Scene::Instantiation &instantiation = chains[chain_idx];
305 EffectChain *effect_chain = instantiation.chain.get();
307 map<LiveInputWrapper *, int> signals_to_connect;
308 map<ImageInput *, string> images_to_select;
309 map<pair<Effect *, string>, int> int_to_set;
310 map<pair<Effect *, string>, float> float_to_set;
311 map<pair<Effect *, string>, array<float, 3>> vec3_to_set;
312 map<pair<Effect *, string>, array<float, 4>> vec4_to_set;
313 for (const auto &index_and_input : instantiation.inputs) {
314 Block *block = blocks[index_and_input.first];
315 EffectType chosen_type = current_type(block);
316 LiveInputWrapper *input = index_and_input.second;
317 if (chosen_type == LIVE_INPUT_YCBCR ||
318 chosen_type == LIVE_INPUT_YCBCR_WITH_DEINTERLACE ||
319 chosen_type == LIVE_INPUT_YCBCR_PLANAR ||
320 chosen_type == LIVE_INPUT_BGRA) {
321 if (block->signal_type_to_connect == Block::CONNECT_SIGNAL) {
322 signals_to_connect.emplace(input, block->signal_to_connect);
324 } else if (block->signal_type_to_connect == Block::CONNECT_CEF) {
325 signals_to_connect.emplace(input, block->cef_to_connect->get_card_index());
327 } else if (block->signal_type_to_connect == Block::CONNECT_VIDEO) {
328 signals_to_connect.emplace(input, block->video_to_connect->get_card_index());
329 } else if (block->signal_type_to_connect == Block::CONNECT_NONE) {
330 luaL_error(L, "An input in a scene was not connected to anything (forgot to call display())");
336 for (const auto &index_and_input : instantiation.image_inputs) {
337 Block *block = blocks[index_and_input.first];
338 ImageInput *input = index_and_input.second;
339 if (current_type(block) == IMAGE_INPUT) {
340 images_to_select.emplace(input, block->pathname);
343 for (const auto &index_and_effect : instantiation.effects) {
344 Block *block = blocks[index_and_effect.first];
345 Effect *effect = index_and_effect.second;
347 // Get the effects currently set on the block.
348 if (current_type(block) != IDENTITY_EFFECT) { // Ignore settings on optional effects.
349 for (const auto &key_and_tuple : block->int_parameters) {
350 int_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
352 for (const auto &key_and_tuple : block->float_parameters) {
353 float_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
355 for (const auto &key_and_tuple : block->vec3_parameters) {
356 vec3_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
358 for (const auto &key_and_tuple : block->vec4_parameters) {
359 vec4_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
363 // Parameters set on the blueprint itself override those that are set for the block,
364 // so they are set afterwards.
365 if (!block->alternatives.empty()) {
366 EffectBlueprint *blueprint = block->alternatives[block->currently_chosen_alternative];
367 for (const auto &key_and_tuple : blueprint->int_parameters) {
368 int_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
370 for (const auto &key_and_tuple : blueprint->float_parameters) {
371 float_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
373 for (const auto &key_and_tuple : blueprint->vec3_parameters) {
374 vec3_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
376 for (const auto &key_and_tuple : blueprint->vec4_parameters) {
377 vec4_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
384 auto setup_chain = [L, theme, signals_to_connect, images_to_select, int_to_set, float_to_set, vec3_to_set, vec4_to_set, input_state]{
385 lock_guard<mutex> lock(theme->m);
387 // Set up state, including connecting signals.
388 for (const auto &input_and_signal : signals_to_connect) {
389 LiveInputWrapper *input = input_and_signal.first;
390 input->connect_signal_raw(input_and_signal.second, input_state);
392 for (const auto &input_and_filename : images_to_select) {
393 input_and_filename.first->switch_image(input_and_filename.second);
395 for (const auto &effect_and_key_and_value : int_to_set) {
396 Effect *effect = effect_and_key_and_value.first.first;
397 const string &key = effect_and_key_and_value.first.second;
398 const int value = effect_and_key_and_value.second;
399 if (!effect->set_int(key, value)) {
400 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), value);
403 for (const auto &effect_and_key_and_value : float_to_set) {
404 Effect *effect = effect_and_key_and_value.first.first;
405 const string &key = effect_and_key_and_value.first.second;
406 const float value = effect_and_key_and_value.second;
407 if (!effect->set_float(key, value)) {
408 luaL_error(L, "Effect refused set_float(\"%s\", %f) (invalid key?)", key.c_str(), value);
411 for (const auto &effect_and_key_and_value : vec3_to_set) {
412 Effect *effect = effect_and_key_and_value.first.first;
413 const string &key = effect_and_key_and_value.first.second;
414 const float *value = effect_and_key_and_value.second.data();
415 if (!effect->set_vec3(key, value)) {
416 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
417 value[0], value[1], value[2]);
420 for (const auto &effect_and_key_and_value : vec4_to_set) {
421 Effect *effect = effect_and_key_and_value.first.first;
422 const string &key = effect_and_key_and_value.first.second;
423 const float *value = effect_and_key_and_value.second.data();
424 if (!effect->set_vec4(key, value)) {
425 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
426 value[0], value[1], value[2], value[3]);
430 return make_pair(effect_chain, move(setup_chain));
433 bool display(Block *block, lua_State *L, int idx)
435 if (lua_isnumber(L, idx)) {
436 Theme *theme = get_theme_updata(L);
437 int signal_idx = luaL_checknumber(L, idx);
438 block->signal_type_to_connect = Block::CONNECT_SIGNAL;
439 block->signal_to_connect = theme->map_signal(signal_idx);
440 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR); // Will be changed to deinterlaced at get_chain() time if needed.
443 } else if (luaL_testudata(L, idx, "HTMLInput")) {
444 CEFCapture *capture = *(CEFCapture **)luaL_checkudata(L, idx, "HTMLInput");
445 block->signal_type_to_connect = Block::CONNECT_CEF;
446 block->cef_to_connect = capture;
447 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_BGRA);
448 assert(capture->get_current_pixel_format() == bmusb::PixelFormat_8BitBGRA);
451 } else if (luaL_testudata(L, idx, "VideoInput")) {
452 FFmpegCapture *capture = *(FFmpegCapture **)luaL_checkudata(L, idx, "VideoInput");
453 block->signal_type_to_connect = Block::CONNECT_VIDEO;
454 block->video_to_connect = capture;
455 if (capture->get_current_pixel_format() == bmusb::PixelFormat_8BitYCbCrPlanar) {
456 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_YCBCR_PLANAR);
458 assert(capture->get_current_pixel_format() == bmusb::PixelFormat_8BitBGRA);
459 block->currently_chosen_alternative = find_index_of(block, LIVE_INPUT_BGRA);
462 } else if (luaL_testudata(L, idx, "ImageInput")) {
463 ImageInput *image = *(ImageInput **)luaL_checkudata(L, idx, "ImageInput");
464 block->signal_type_to_connect = Block::CONNECT_NONE;
465 block->currently_chosen_alternative = find_index_of(block, IMAGE_INPUT);
466 block->pathname = image->get_pathname();
473 int Block_display(lua_State* L)
475 assert(lua_gettop(L) == 2);
476 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
477 if (!block->is_input) {
478 luaL_error(L, "display() called on something that isn't an input");
481 bool ok = display(block, L, 2);
483 luaL_error(L, "display() called with something that's not a signal (a signal number, a HTML input, or a VideoInput)");
486 if (block->currently_chosen_alternative == -1) {
487 luaL_error(L, "display() called on an input whose type was fixed at construction time, with a signal of different type");
493 int Block_choose(lua_State* L)
495 assert(lua_gettop(L) == 2);
496 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
497 int alternative_idx = -1;
498 if (lua_isnumber(L, 2)) {
499 alternative_idx = luaL_checknumber(L, 2);
500 } else if (lua_istable(L, 2)) {
501 // See if it's an Effect metatable (e.g. foo:choose(ResampleEffect))
502 lua_getfield(L, 2, "__effect_type_id");
503 if (lua_isnumber(L, -1)) {
504 EffectType effect_type = EffectType(luaL_checknumber(L, -1));
505 alternative_idx = find_index_of(block, effect_type);
510 if (alternative_idx == -1) {
511 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");
514 assert(alternative_idx >= 0);
515 assert(size_t(alternative_idx) < block->alternatives.size());
516 block->currently_chosen_alternative = alternative_idx;
518 return wrap_lua_existing_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", block->alternatives[alternative_idx]);
521 int Block_enable(lua_State *L)
523 assert(lua_gettop(L) == 1);
524 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
526 if (block->alternatives.size() != 2 ||
527 block->alternatives[1]->effect_type != IDENTITY_EFFECT) {
528 luaL_error(L, "enable() called on something that wasn't added with add_optional_effect()");
530 block->currently_chosen_alternative = 0; // The actual effect.
534 int Block_disable(lua_State *L)
536 assert(lua_gettop(L) == 1);
537 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
539 block->currently_chosen_alternative = find_index_of(block, IDENTITY_EFFECT);
540 if (block->currently_chosen_alternative == -1) {
541 luaL_error(L, "disable() called on something that didn't have an IdentityEffect fallback (try add_optional_effect())");
543 assert(block->currently_chosen_alternative != -1);
547 int Block_set_int(lua_State *L)
549 assert(lua_gettop(L) == 3);
550 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
551 string key = checkstdstring(L, 2);
552 float value = luaL_checknumber(L, 3);
554 // TODO: check validity already here, if possible?
555 block->int_parameters[key] = value;
560 int Block_set_float(lua_State *L)
562 assert(lua_gettop(L) == 3);
563 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
564 string key = checkstdstring(L, 2);
565 float value = luaL_checknumber(L, 3);
567 // TODO: check validity already here, if possible?
568 block->float_parameters[key] = value;
573 int Block_set_vec3(lua_State *L)
575 assert(lua_gettop(L) == 5);
576 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
577 string key = checkstdstring(L, 2);
579 v[0] = luaL_checknumber(L, 3);
580 v[1] = luaL_checknumber(L, 4);
581 v[2] = luaL_checknumber(L, 5);
583 // TODO: check validity already here, if possible?
584 block->vec3_parameters[key] = v;
589 int Block_set_vec4(lua_State *L)
591 assert(lua_gettop(L) == 6);
592 Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
593 string key = checkstdstring(L, 2);
595 v[0] = luaL_checknumber(L, 3);
596 v[1] = luaL_checknumber(L, 4);
597 v[2] = luaL_checknumber(L, 5);
598 v[3] = luaL_checknumber(L, 6);
600 // TODO: check validity already here, if possible?
601 block->vec4_parameters[key] = v;