4 #include <bmusb/bmusb.h>
8 #include <movit/effect.h>
9 #include <movit/effect_chain.h>
10 #include <movit/image_format.h>
11 #include <movit/mix_effect.h>
12 #include <movit/multiply_effect.h>
13 #include <movit/overlay_effect.h>
14 #include <movit/padding_effect.h>
15 #include <movit/resample_effect.h>
16 #include <movit/resize_effect.h>
17 #include <movit/util.h>
18 #include <movit/white_balance_effect.h>
19 #include <movit/ycbcr.h>
20 #include <movit/ycbcr_input.h>
29 #include "deinterlace_effect.h"
31 #include "image_input.h"
33 #include "input_state.h"
34 #include "pbo_frame_allocator.h"
43 using namespace movit;
45 extern Mixer *global_mixer;
49 // Contains basically the same data as InputState, but does not hold on to
50 // a reference to the frames. This is important so that we can release them
51 // without having to wait for Lua's GC.
52 struct InputStateInfo {
53 InputStateInfo(const InputState& input_state);
55 unsigned last_width[MAX_VIDEO_CARDS], last_height[MAX_VIDEO_CARDS];
56 bool last_interlaced[MAX_VIDEO_CARDS], last_has_signal[MAX_VIDEO_CARDS], last_is_connected[MAX_VIDEO_CARDS];
57 unsigned last_frame_rate_nom[MAX_VIDEO_CARDS], last_frame_rate_den[MAX_VIDEO_CARDS];
60 InputStateInfo::InputStateInfo(const InputState &input_state)
62 for (unsigned signal_num = 0; signal_num < MAX_VIDEO_CARDS; ++signal_num) {
63 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
64 if (frame.frame == nullptr) {
65 last_width[signal_num] = last_height[signal_num] = 0;
66 last_interlaced[signal_num] = false;
67 last_has_signal[signal_num] = false;
68 last_is_connected[signal_num] = false;
71 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
72 last_width[signal_num] = userdata->last_width[frame.field_number];
73 last_height[signal_num] = userdata->last_height[frame.field_number];
74 last_interlaced[signal_num] = userdata->last_interlaced;
75 last_has_signal[signal_num] = userdata->last_has_signal;
76 last_is_connected[signal_num] = userdata->last_is_connected;
77 last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
78 last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
82 class LuaRefWithDeleter {
84 LuaRefWithDeleter(mutex *m, lua_State *L, int ref) : m(m), L(L), ref(ref) {}
85 ~LuaRefWithDeleter() {
86 unique_lock<mutex> lock(*m);
87 luaL_unref(L, LUA_REGISTRYINDEX, ref);
89 int get() const { return ref; }
92 LuaRefWithDeleter(const LuaRefWithDeleter &) = delete;
99 template<class T, class... Args>
100 int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
102 // Construct the C++ object and put it on the stack.
103 void *mem = lua_newuserdata(L, sizeof(T));
104 new(mem) T(forward<Args>(args)...);
106 // Look up the metatable named <class_name>, and set it on the new object.
107 luaL_getmetatable(L, class_name);
108 lua_setmetatable(L, -2);
113 // Like wrap_lua_object, but the object is not owned by Lua; ie. it's not freed
114 // by Lua GC. This is typically the case for Effects, which are owned by EffectChain
115 // and expected to be destructed by it. The object will be of type T** instead of T*
116 // when exposed to Lua.
118 // Note that we currently leak if you allocate an Effect in this way and never call
119 // add_effect. We should see if there's a way to e.g. set __gc on it at construction time
120 // and then release that once add_effect() takes ownership.
121 template<class T, class... Args>
122 int wrap_lua_object_nonowned(lua_State* L, const char *class_name, Args&&... args)
124 // Construct the pointer ot the C++ object and put it on the stack.
125 T **obj = (T **)lua_newuserdata(L, sizeof(T *));
126 *obj = new T(forward<Args>(args)...);
128 // Look up the metatable named <class_name>, and set it on the new object.
129 luaL_getmetatable(L, class_name);
130 lua_setmetatable(L, -2);
135 Theme *get_theme_updata(lua_State* L)
137 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
138 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
141 Effect *get_effect(lua_State *L, int idx)
143 if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
144 luaL_testudata(L, idx, "ResampleEffect") ||
145 luaL_testudata(L, idx, "PaddingEffect") ||
146 luaL_testudata(L, idx, "IntegralPaddingEffect") ||
147 luaL_testudata(L, idx, "OverlayEffect") ||
148 luaL_testudata(L, idx, "ResizeEffect") ||
149 luaL_testudata(L, idx, "MultiplyEffect") ||
150 luaL_testudata(L, idx, "MixEffect") ||
151 luaL_testudata(L, idx, "ImageInput")) {
152 return *(Effect **)lua_touserdata(L, idx);
154 luaL_error(L, "Error: Index #%d was not an Effect type\n", idx);
158 InputStateInfo *get_input_state_info(lua_State *L, int idx)
160 if (luaL_testudata(L, idx, "InputStateInfo")) {
161 return (InputStateInfo *)lua_touserdata(L, idx);
163 luaL_error(L, "Error: Index #%d was not InputStateInfo\n", idx);
167 bool checkbool(lua_State* L, int idx)
169 luaL_checktype(L, idx, LUA_TBOOLEAN);
170 return lua_toboolean(L, idx);
173 string checkstdstring(lua_State *L, int index)
176 const char* cstr = lua_tolstring(L, index, &len);
177 return string(cstr, len);
180 int EffectChain_new(lua_State* L)
182 assert(lua_gettop(L) == 2);
183 Theme *theme = get_theme_updata(L);
184 int aspect_w = luaL_checknumber(L, 1);
185 int aspect_h = luaL_checknumber(L, 2);
187 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h, theme->get_resource_pool());
190 int EffectChain_gc(lua_State* L)
192 assert(lua_gettop(L) == 1);
193 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
194 chain->~EffectChain();
198 int EffectChain_add_live_input(lua_State* L)
200 assert(lua_gettop(L) == 3);
201 Theme *theme = get_theme_updata(L);
202 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
203 bool override_bounce = checkbool(L, 2);
204 bool deinterlace = checkbool(L, 3);
205 return wrap_lua_object<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, override_bounce, deinterlace);
208 int EffectChain_add_effect(lua_State* L)
210 assert(lua_gettop(L) >= 2);
211 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
213 // TODO: Better error reporting.
214 Effect *effect = get_effect(L, 2);
215 if (lua_gettop(L) == 2) {
216 if (effect->num_inputs() == 0) {
217 chain->add_input((Input *)effect);
219 chain->add_effect(effect);
222 vector<Effect *> inputs;
223 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
224 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
225 LiveInputWrapper *input = (LiveInputWrapper *)lua_touserdata(L, idx);
226 inputs.push_back(input->get_effect());
228 inputs.push_back(get_effect(L, idx));
231 chain->add_effect(effect, inputs);
234 lua_settop(L, 2); // Return the effect itself.
236 // Make sure Lua doesn't garbage-collect it away.
237 lua_pushvalue(L, -1);
238 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
243 int EffectChain_finalize(lua_State* L)
245 assert(lua_gettop(L) == 2);
246 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
247 bool is_main_chain = checkbool(L, 2);
249 // Add outputs as needed.
250 // NOTE: If you change any details about the output format, you will need to
251 // also update what's given to the muxer (HTTPD::Mux constructor) and
252 // what's put in the H.264 stream (sps_rbsp()).
253 ImageFormat inout_format;
254 inout_format.color_space = COLORSPACE_REC_709;
256 // Output gamma is tricky. We should output Rec. 709 for TV, except that
257 // we expect to run with web players and others that don't really care and
258 // just output with no conversion. So that means we'll need to output sRGB,
259 // even though H.264 has no setting for that (we use “unspecified”).
260 inout_format.gamma_curve = GAMMA_sRGB;
263 YCbCrFormat output_ycbcr_format;
264 // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
265 // happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
266 output_ycbcr_format.chroma_subsampling_x = 1;
267 output_ycbcr_format.chroma_subsampling_y = 1;
269 // This will be overridden if HDMI/SDI output is in force.
270 if (global_flags.ycbcr_rec709_coefficients) {
271 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
273 output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
276 output_ycbcr_format.full_range = false;
277 output_ycbcr_format.num_levels = 256;
279 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR);
280 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_INTERLEAVED); // Add a copy where we'll only be using the Y component.
281 chain->set_dither_bits(8);
282 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
284 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
291 int LiveInputWrapper_connect_signal(lua_State* L)
293 assert(lua_gettop(L) == 2);
294 LiveInputWrapper *input = (LiveInputWrapper *)luaL_checkudata(L, 1, "LiveInputWrapper");
295 int signal_num = luaL_checknumber(L, 2);
296 input->connect_signal(signal_num);
300 int ImageInput_new(lua_State* L)
302 assert(lua_gettop(L) == 1);
303 string filename = checkstdstring(L, 1);
304 return wrap_lua_object_nonowned<ImageInput>(L, "ImageInput", filename);
307 int WhiteBalanceEffect_new(lua_State* L)
309 assert(lua_gettop(L) == 0);
310 return wrap_lua_object_nonowned<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
313 int ResampleEffect_new(lua_State* L)
315 assert(lua_gettop(L) == 0);
316 return wrap_lua_object_nonowned<ResampleEffect>(L, "ResampleEffect");
319 int PaddingEffect_new(lua_State* L)
321 assert(lua_gettop(L) == 0);
322 return wrap_lua_object_nonowned<PaddingEffect>(L, "PaddingEffect");
325 int IntegralPaddingEffect_new(lua_State* L)
327 assert(lua_gettop(L) == 0);
328 return wrap_lua_object_nonowned<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
331 int OverlayEffect_new(lua_State* L)
333 assert(lua_gettop(L) == 0);
334 return wrap_lua_object_nonowned<OverlayEffect>(L, "OverlayEffect");
337 int ResizeEffect_new(lua_State* L)
339 assert(lua_gettop(L) == 0);
340 return wrap_lua_object_nonowned<ResizeEffect>(L, "ResizeEffect");
343 int MultiplyEffect_new(lua_State* L)
345 assert(lua_gettop(L) == 0);
346 return wrap_lua_object_nonowned<MultiplyEffect>(L, "MultiplyEffect");
349 int MixEffect_new(lua_State* L)
351 assert(lua_gettop(L) == 0);
352 return wrap_lua_object_nonowned<MixEffect>(L, "MixEffect");
355 int InputStateInfo_get_width(lua_State* L)
357 assert(lua_gettop(L) == 2);
358 InputStateInfo *input_state_info = get_input_state_info(L, 1);
359 Theme *theme = get_theme_updata(L);
360 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
361 lua_pushnumber(L, input_state_info->last_width[signal_num]);
365 int InputStateInfo_get_height(lua_State* L)
367 assert(lua_gettop(L) == 2);
368 InputStateInfo *input_state_info = get_input_state_info(L, 1);
369 Theme *theme = get_theme_updata(L);
370 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
371 lua_pushnumber(L, input_state_info->last_height[signal_num]);
375 int InputStateInfo_get_interlaced(lua_State* L)
377 assert(lua_gettop(L) == 2);
378 InputStateInfo *input_state_info = get_input_state_info(L, 1);
379 Theme *theme = get_theme_updata(L);
380 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
381 lua_pushboolean(L, input_state_info->last_interlaced[signal_num]);
385 int InputStateInfo_get_has_signal(lua_State* L)
387 assert(lua_gettop(L) == 2);
388 InputStateInfo *input_state_info = get_input_state_info(L, 1);
389 Theme *theme = get_theme_updata(L);
390 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
391 lua_pushboolean(L, input_state_info->last_has_signal[signal_num]);
395 int InputStateInfo_get_is_connected(lua_State* L)
397 assert(lua_gettop(L) == 2);
398 InputStateInfo *input_state_info = get_input_state_info(L, 1);
399 Theme *theme = get_theme_updata(L);
400 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
401 lua_pushboolean(L, input_state_info->last_is_connected[signal_num]);
405 int InputStateInfo_get_frame_rate_nom(lua_State* L)
407 assert(lua_gettop(L) == 2);
408 InputStateInfo *input_state_info = get_input_state_info(L, 1);
409 Theme *theme = get_theme_updata(L);
410 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
411 lua_pushnumber(L, input_state_info->last_frame_rate_nom[signal_num]);
415 int InputStateInfo_get_frame_rate_den(lua_State* L)
417 assert(lua_gettop(L) == 2);
418 InputStateInfo *input_state_info = get_input_state_info(L, 1);
419 Theme *theme = get_theme_updata(L);
420 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
421 lua_pushnumber(L, input_state_info->last_frame_rate_den[signal_num]);
425 int Effect_set_float(lua_State *L)
427 assert(lua_gettop(L) == 3);
428 Effect *effect = (Effect *)get_effect(L, 1);
429 string key = checkstdstring(L, 2);
430 float value = luaL_checknumber(L, 3);
431 if (!effect->set_float(key, value)) {
432 luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
437 int Effect_set_int(lua_State *L)
439 assert(lua_gettop(L) == 3);
440 Effect *effect = (Effect *)get_effect(L, 1);
441 string key = checkstdstring(L, 2);
442 float value = luaL_checknumber(L, 3);
443 if (!effect->set_int(key, value)) {
444 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
449 int Effect_set_vec3(lua_State *L)
451 assert(lua_gettop(L) == 5);
452 Effect *effect = (Effect *)get_effect(L, 1);
453 string key = checkstdstring(L, 2);
455 v[0] = luaL_checknumber(L, 3);
456 v[1] = luaL_checknumber(L, 4);
457 v[2] = luaL_checknumber(L, 5);
458 if (!effect->set_vec3(key, v)) {
459 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
465 int Effect_set_vec4(lua_State *L)
467 assert(lua_gettop(L) == 6);
468 Effect *effect = (Effect *)get_effect(L, 1);
469 string key = checkstdstring(L, 2);
471 v[0] = luaL_checknumber(L, 3);
472 v[1] = luaL_checknumber(L, 4);
473 v[2] = luaL_checknumber(L, 5);
474 v[3] = luaL_checknumber(L, 6);
475 if (!effect->set_vec4(key, v)) {
476 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
477 v[0], v[1], v[2], v[3]);
482 const luaL_Reg EffectChain_funcs[] = {
483 { "new", EffectChain_new },
484 { "__gc", EffectChain_gc },
485 { "add_live_input", EffectChain_add_live_input },
486 { "add_effect", EffectChain_add_effect },
487 { "finalize", EffectChain_finalize },
491 const luaL_Reg LiveInputWrapper_funcs[] = {
492 { "connect_signal", LiveInputWrapper_connect_signal },
496 const luaL_Reg ImageInput_funcs[] = {
497 { "new", ImageInput_new },
498 { "set_float", Effect_set_float },
499 { "set_int", Effect_set_int },
500 { "set_vec3", Effect_set_vec3 },
501 { "set_vec4", Effect_set_vec4 },
505 const luaL_Reg WhiteBalanceEffect_funcs[] = {
506 { "new", WhiteBalanceEffect_new },
507 { "set_float", Effect_set_float },
508 { "set_int", Effect_set_int },
509 { "set_vec3", Effect_set_vec3 },
510 { "set_vec4", Effect_set_vec4 },
514 const luaL_Reg ResampleEffect_funcs[] = {
515 { "new", ResampleEffect_new },
516 { "set_float", Effect_set_float },
517 { "set_int", Effect_set_int },
518 { "set_vec3", Effect_set_vec3 },
519 { "set_vec4", Effect_set_vec4 },
523 const luaL_Reg PaddingEffect_funcs[] = {
524 { "new", PaddingEffect_new },
525 { "set_float", Effect_set_float },
526 { "set_int", Effect_set_int },
527 { "set_vec3", Effect_set_vec3 },
528 { "set_vec4", Effect_set_vec4 },
532 const luaL_Reg IntegralPaddingEffect_funcs[] = {
533 { "new", IntegralPaddingEffect_new },
534 { "set_float", Effect_set_float },
535 { "set_int", Effect_set_int },
536 { "set_vec3", Effect_set_vec3 },
537 { "set_vec4", Effect_set_vec4 },
541 const luaL_Reg OverlayEffect_funcs[] = {
542 { "new", OverlayEffect_new },
543 { "set_float", Effect_set_float },
544 { "set_int", Effect_set_int },
545 { "set_vec3", Effect_set_vec3 },
546 { "set_vec4", Effect_set_vec4 },
550 const luaL_Reg ResizeEffect_funcs[] = {
551 { "new", ResizeEffect_new },
552 { "set_float", Effect_set_float },
553 { "set_int", Effect_set_int },
554 { "set_vec3", Effect_set_vec3 },
555 { "set_vec4", Effect_set_vec4 },
559 const luaL_Reg MultiplyEffect_funcs[] = {
560 { "new", MultiplyEffect_new },
561 { "set_float", Effect_set_float },
562 { "set_int", Effect_set_int },
563 { "set_vec3", Effect_set_vec3 },
564 { "set_vec4", Effect_set_vec4 },
568 const luaL_Reg MixEffect_funcs[] = {
569 { "new", MixEffect_new },
570 { "set_float", Effect_set_float },
571 { "set_int", Effect_set_int },
572 { "set_vec3", Effect_set_vec3 },
573 { "set_vec4", Effect_set_vec4 },
577 const luaL_Reg InputStateInfo_funcs[] = {
578 { "get_width", InputStateInfo_get_width },
579 { "get_height", InputStateInfo_get_height },
580 { "get_interlaced", InputStateInfo_get_interlaced },
581 { "get_has_signal", InputStateInfo_get_has_signal },
582 { "get_is_connected", InputStateInfo_get_is_connected },
583 { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
584 { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
590 LiveInputWrapper::LiveInputWrapper(Theme *theme, EffectChain *chain, bool override_bounce, bool deinterlace)
592 deinterlace(deinterlace)
594 ImageFormat inout_format;
595 inout_format.color_space = COLORSPACE_sRGB;
597 // Gamma curve depends on the input signal, and we don't really get any
598 // indications. A camera would be expected to do Rec. 709, but
599 // I haven't checked if any do in practice. However, computers _do_ output
600 // in sRGB gamma (ie., they don't convert from sRGB to Rec. 709), and
601 // I wouldn't really be surprised if most non-professional cameras do, too.
602 // So we pick sRGB as the least evil here.
603 inout_format.gamma_curve = GAMMA_sRGB;
605 // The Blackmagic driver docs claim that the device outputs Y'CbCr
606 // according to Rec. 601, but practical testing indicates it definitely
607 // is Rec. 709 (at least up to errors attributable to rounding errors).
608 // Perhaps 601 was only to indicate the subsampling positions, not the
609 // colorspace itself? Tested with a Lenovo X1 gen 3 as input.
610 YCbCrFormat input_ycbcr_format;
611 input_ycbcr_format.chroma_subsampling_x = global_flags.ten_bit_input ? 1 : 2;
612 input_ycbcr_format.chroma_subsampling_y = 1;
613 input_ycbcr_format.num_levels = global_flags.ten_bit_input ? 1024 : 256;
614 input_ycbcr_format.cb_x_position = 0.0;
615 input_ycbcr_format.cr_x_position = 0.0;
616 input_ycbcr_format.cb_y_position = 0.5;
617 input_ycbcr_format.cr_y_position = 0.5;
618 input_ycbcr_format.luma_coefficients = YCBCR_REC_709;
619 input_ycbcr_format.full_range = false;
623 deinterlace_effect = new movit::DeinterlaceEffect();
625 // As per the comments in deinterlace_effect.h, we turn this off.
626 // The most likely interlaced input for us is either a camera
627 // (where it's fine to turn it off) or a laptop (where it _should_
629 CHECK(deinterlace_effect->set_int("enable_spatial_interlacing_check", 0));
631 num_inputs = deinterlace_effect->num_inputs();
632 assert(num_inputs == FRAME_HISTORY_LENGTH);
636 for (unsigned i = 0; i < num_inputs; ++i) {
637 // When using 10-bit input, we're converting to interleaved through v210Converter.
638 YCbCrInputSplitting splitting = global_flags.ten_bit_input ? YCBCR_INPUT_INTERLEAVED : YCBCR_INPUT_SPLIT_Y_AND_CBCR;
639 if (override_bounce) {
640 inputs.push_back(new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
642 inputs.push_back(new YCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
644 chain->add_input(inputs.back());
648 vector<Effect *> reverse_inputs(inputs.rbegin(), inputs.rend());
649 chain->add_effect(deinterlace_effect, reverse_inputs);
653 void LiveInputWrapper::connect_signal(int signal_num)
655 if (global_mixer == nullptr) {
660 signal_num = theme->map_signal(signal_num);
662 BufferedFrame first_frame = theme->input_state->buffered_frames[signal_num][0];
663 if (first_frame.frame == nullptr) {
667 unsigned width, height;
669 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)first_frame.frame->userdata;
670 width = userdata->last_width[first_frame.field_number];
671 height = userdata->last_height[first_frame.field_number];
674 BufferedFrame last_good_frame = first_frame;
675 for (unsigned i = 0; i < inputs.size(); ++i) {
676 BufferedFrame frame = theme->input_state->buffered_frames[signal_num][i];
677 if (frame.frame == nullptr) {
678 // Not enough data; reuse last frame (well, field).
679 // This is suboptimal, but we have nothing better.
680 frame = last_good_frame;
682 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
684 if (userdata->last_width[frame.field_number] != width ||
685 userdata->last_height[frame.field_number] != height) {
686 // Resolution changed; reuse last frame/field.
687 frame = last_good_frame;
688 userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
691 if (global_flags.ten_bit_input) {
692 inputs[i]->set_texture_num(0, userdata->tex_444[frame.field_number]);
694 inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
695 inputs[i]->set_texture_num(1, userdata->tex_cbcr[frame.field_number]);
697 inputs[i]->set_width(userdata->last_width[frame.field_number]);
698 inputs[i]->set_height(userdata->last_height[frame.field_number]);
700 last_good_frame = frame;
704 BufferedFrame frame = theme->input_state->buffered_frames[signal_num][0];
705 CHECK(deinterlace_effect->set_int("current_field_position", frame.field_number));
711 int call_num_channels(lua_State *L)
713 lua_getglobal(L, "num_channels");
715 if (lua_pcall(L, 0, 1, 0) != 0) {
716 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
720 int num_channels = luaL_checknumber(L, 1);
722 assert(lua_gettop(L) == 0);
728 Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
729 : resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
734 register_class("EffectChain", EffectChain_funcs);
735 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
736 register_class("ImageInput", ImageInput_funcs);
737 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
738 register_class("ResampleEffect", ResampleEffect_funcs);
739 register_class("PaddingEffect", PaddingEffect_funcs);
740 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
741 register_class("OverlayEffect", OverlayEffect_funcs);
742 register_class("ResizeEffect", ResizeEffect_funcs);
743 register_class("MultiplyEffect", MultiplyEffect_funcs);
744 register_class("MixEffect", MixEffect_funcs);
745 register_class("InputStateInfo", InputStateInfo_funcs);
747 // Run script. Search through all directories until we find a file that will load
748 // (as in, does not return LUA_ERRFILE); then run it. We store load errors
749 // from all the attempts, and show them once we know we can't find any of them.
751 vector<string> errors;
752 bool success = false;
753 for (size_t i = 0; i < search_dirs.size(); ++i) {
754 string path = search_dirs[i] + "/" + filename;
755 int err = luaL_loadfile(L, path.c_str());
757 // Success; actually call the code.
758 if (lua_pcall(L, 0, LUA_MULTRET, 0)) {
759 fprintf(stderr, "Error when running %s: %s\n", path.c_str(), lua_tostring(L, -1));
765 errors.push_back(lua_tostring(L, -1));
767 if (err != LUA_ERRFILE) {
768 // The file actually loaded, but failed to parse somehow. Abort; don't try the next one.
774 for (const string &error : errors) {
775 fprintf(stderr, "%s\n", error.c_str());
779 assert(lua_gettop(L) == 0);
781 // Ask it for the number of channels.
782 num_channels = call_num_channels(L);
790 void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
792 assert(lua_gettop(L) == 0);
793 luaL_newmetatable(L, class_name); // mt = {}
794 lua_pushlightuserdata(L, this);
795 luaL_setfuncs(L, funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
796 lua_pushvalue(L, -1);
797 lua_setfield(L, -2, "__index"); // mt.__index = mt
798 lua_setglobal(L, class_name); // ClassName = mt
799 assert(lua_gettop(L) == 0);
802 Theme::Chain Theme::get_chain(unsigned num, float t, unsigned width, unsigned height, InputState input_state)
806 unique_lock<mutex> lock(m);
807 assert(lua_gettop(L) == 0);
808 lua_getglobal(L, "get_chain"); /* function to be called */
809 lua_pushnumber(L, num);
810 lua_pushnumber(L, t);
811 lua_pushnumber(L, width);
812 lua_pushnumber(L, height);
813 wrap_lua_object<InputStateInfo>(L, "InputStateInfo", input_state);
815 if (lua_pcall(L, 5, 2, 0) != 0) {
816 fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
820 chain.chain = (EffectChain *)luaL_testudata(L, -2, "EffectChain");
821 if (chain.chain == nullptr) {
822 fprintf(stderr, "get_chain() for chain number %d did not return an EffectChain\n",
826 if (!lua_isfunction(L, -1)) {
827 fprintf(stderr, "Argument #-1 should be a function\n");
830 lua_pushvalue(L, -1);
831 shared_ptr<LuaRefWithDeleter> funcref(new LuaRefWithDeleter(&m, L, luaL_ref(L, LUA_REGISTRYINDEX)));
833 assert(lua_gettop(L) == 0);
835 chain.setup_chain = [this, funcref, input_state]{
836 unique_lock<mutex> lock(m);
838 this->input_state = &input_state;
840 // Set up state, including connecting signals.
841 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref->get());
842 if (lua_pcall(L, 0, 0, 0) != 0) {
843 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
846 assert(lua_gettop(L) == 0);
849 // TODO: Can we do better, e.g. by running setup_chain() and seeing what it references?
850 // Actually, setup_chain does maybe hold all the references we need now anyway?
851 for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
852 for (unsigned frame_num = 0; frame_num < FRAME_HISTORY_LENGTH; ++frame_num) {
853 chain.input_frames.push_back(input_state.buffered_frames[card_index][frame_num].frame);
860 string Theme::get_channel_name(unsigned channel)
862 unique_lock<mutex> lock(m);
863 lua_getglobal(L, "channel_name");
864 lua_pushnumber(L, channel);
865 if (lua_pcall(L, 1, 1, 0) != 0) {
866 fprintf(stderr, "error running function `channel_name': %s\n", lua_tostring(L, -1));
869 const char *ret = lua_tostring(L, -1);
870 if (ret == nullptr) {
871 fprintf(stderr, "function `channel_name' returned nil for channel %d\n", channel);
877 assert(lua_gettop(L) == 0);
881 int Theme::get_channel_signal(unsigned channel)
883 unique_lock<mutex> lock(m);
884 lua_getglobal(L, "channel_signal");
885 lua_pushnumber(L, channel);
886 if (lua_pcall(L, 1, 1, 0) != 0) {
887 fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
891 int ret = luaL_checknumber(L, 1);
893 assert(lua_gettop(L) == 0);
897 std::string Theme::get_channel_color(unsigned channel)
899 unique_lock<mutex> lock(m);
900 lua_getglobal(L, "channel_color");
901 lua_pushnumber(L, channel);
902 if (lua_pcall(L, 1, 1, 0) != 0) {
903 fprintf(stderr, "error running function `channel_color': %s\n", lua_tostring(L, -1));
907 const char *ret = lua_tostring(L, -1);
908 if (ret == nullptr) {
909 fprintf(stderr, "function `channel_color' returned nil for channel %d\n", channel);
915 assert(lua_gettop(L) == 0);
919 bool Theme::get_supports_set_wb(unsigned channel)
921 unique_lock<mutex> lock(m);
922 lua_getglobal(L, "supports_set_wb");
923 lua_pushnumber(L, channel);
924 if (lua_pcall(L, 1, 1, 0) != 0) {
925 fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
929 bool ret = checkbool(L, -1);
931 assert(lua_gettop(L) == 0);
935 void Theme::set_wb(unsigned channel, double r, double g, double b)
937 unique_lock<mutex> lock(m);
938 lua_getglobal(L, "set_wb");
939 lua_pushnumber(L, channel);
940 lua_pushnumber(L, r);
941 lua_pushnumber(L, g);
942 lua_pushnumber(L, b);
943 if (lua_pcall(L, 4, 0, 0) != 0) {
944 fprintf(stderr, "error running function `set_wb': %s\n", lua_tostring(L, -1));
948 assert(lua_gettop(L) == 0);
951 vector<string> Theme::get_transition_names(float t)
953 unique_lock<mutex> lock(m);
954 lua_getglobal(L, "get_transitions");
955 lua_pushnumber(L, t);
956 if (lua_pcall(L, 1, 1, 0) != 0) {
957 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
963 while (lua_next(L, -2) != 0) {
964 ret.push_back(lua_tostring(L, -1));
968 assert(lua_gettop(L) == 0);
972 int Theme::map_signal(int signal_num)
974 unique_lock<mutex> lock(map_m);
975 if (signal_to_card_mapping.count(signal_num)) {
976 return signal_to_card_mapping[signal_num];
980 if (global_flags.output_card != -1 && num_cards > 1) {
981 // Try to exclude the output card from the default card_index.
982 card_index = signal_num % (num_cards - 1);
983 if (card_index >= global_flags.output_card) {
986 if (signal_num >= int(num_cards - 1)) {
987 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u input card(s) (card %d is busy with output).\n",
988 signal_num, num_cards - 1, global_flags.output_card);
989 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
992 card_index = signal_num % num_cards;
993 if (signal_num >= int(num_cards)) {
994 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u card(s).\n", signal_num, num_cards);
995 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
998 signal_to_card_mapping[signal_num] = card_index;
1002 void Theme::set_signal_mapping(int signal_num, int card_num)
1004 unique_lock<mutex> lock(map_m);
1005 assert(card_num < int(num_cards));
1006 signal_to_card_mapping[signal_num] = card_num;
1009 void Theme::transition_clicked(int transition_num, float t)
1011 unique_lock<mutex> lock(m);
1012 lua_getglobal(L, "transition_clicked");
1013 lua_pushnumber(L, transition_num);
1014 lua_pushnumber(L, t);
1016 if (lua_pcall(L, 2, 0, 0) != 0) {
1017 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
1020 assert(lua_gettop(L) == 0);
1023 void Theme::channel_clicked(int preview_num)
1025 unique_lock<mutex> lock(m);
1026 lua_getglobal(L, "channel_clicked");
1027 lua_pushnumber(L, preview_num);
1029 if (lua_pcall(L, 1, 0, 0) != 0) {
1030 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));
1033 assert(lua_gettop(L) == 0);