4 #include <bmusb/bmusb.h>
9 #include <movit/deinterlace_effect.h>
10 #include <movit/effect.h>
11 #include <movit/effect_chain.h>
12 #include <movit/image_format.h>
13 #include <movit/input.h>
14 #include <movit/lift_gamma_gain_effect.h>
15 #include <movit/mix_effect.h>
16 #include <movit/multiply_effect.h>
17 #include <movit/overlay_effect.h>
18 #include <movit/padding_effect.h>
19 #include <movit/resample_effect.h>
20 #include <movit/resize_effect.h>
21 #include <movit/util.h>
22 #include <movit/white_balance_effect.h>
23 #include <movit/ycbcr.h>
24 #include <movit/ycbcr_input.h>
34 #include "cef_capture.h"
36 #include "ffmpeg_capture.h"
38 #include "image_input.h"
39 #include "input_state.h"
40 #include "lua_utils.h"
41 #include "pbo_frame_allocator.h"
51 using namespace movit;
53 extern Mixer *global_mixer;
55 Theme *get_theme_updata(lua_State* L)
57 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
58 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
61 void print_warning(lua_State* L, const char *format, ...)
66 vsnprintf(buf, sizeof(buf), format, ap);
70 lua_getstack(L, 1, &ar);
71 lua_getinfo(L, "nSl", &ar);
72 fprintf(stderr, "WARNING: %s:%d: %s", ar.source, ar.currentline, buf);
75 int ThemeMenu_set(lua_State *L)
77 Theme *theme = get_theme_updata(L);
78 return theme->set_theme_menu(L);
81 InputStateInfo::InputStateInfo(const InputState &input_state)
83 for (unsigned signal_num = 0; signal_num < MAX_VIDEO_CARDS; ++signal_num) {
84 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
85 if (frame.frame == nullptr) {
86 last_width[signal_num] = last_height[signal_num] = 0;
87 last_interlaced[signal_num] = false;
88 last_has_signal[signal_num] = false;
89 last_is_connected[signal_num] = false;
92 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
93 last_width[signal_num] = userdata->last_width[frame.field_number];
94 last_height[signal_num] = userdata->last_height[frame.field_number];
95 last_interlaced[signal_num] = userdata->last_interlaced;
96 last_has_signal[signal_num] = userdata->last_has_signal;
97 last_is_connected[signal_num] = userdata->last_is_connected;
98 last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
99 last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
100 has_last_subtitle[signal_num] = userdata->has_last_subtitle;
101 last_subtitle[signal_num] = userdata->last_subtitle;
105 // An effect that does nothing.
106 class IdentityEffect : public Effect {
109 string effect_type_id() const override { return "IdentityEffect"; }
110 string output_fragment_shader() override { return read_file("identity.frag"); }
113 Effect *instantiate_effect(EffectChain *chain, EffectType effect_type)
115 switch (effect_type) {
116 case IDENTITY_EFFECT:
117 return new IdentityEffect;
118 case WHITE_BALANCE_EFFECT:
119 return new WhiteBalanceEffect;
120 case RESAMPLE_EFFECT:
121 return new ResampleEffect;
123 return new PaddingEffect;
124 case INTEGRAL_PADDING_EFFECT:
125 return new IntegralPaddingEffect;
127 return new OverlayEffect;
129 return new ResizeEffect;
130 case MULTIPLY_EFFECT:
131 return new MultiplyEffect;
133 return new MixEffect;
134 case LIFT_GAMMA_GAIN_EFFECT:
135 return new LiftGammaGainEffect;
137 fprintf(stderr, "Unhandled effect type %d\n", effect_type);
144 Effect *get_effect_from_blueprint(EffectChain *chain, lua_State *L, int idx)
146 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, idx, "EffectBlueprint");
147 if (blueprint->effect != nullptr) {
148 luaL_error(L, "An effect can currently only be added to one chain.\n");
151 Effect *effect = instantiate_effect(chain, blueprint->effect_type);
153 // Set the parameters that were deferred earlier.
154 for (const auto &kv : blueprint->int_parameters) {
155 if (!effect->set_int(kv.first, kv.second)) {
156 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", kv.first.c_str(), kv.second);
159 for (const auto &kv : blueprint->float_parameters) {
160 if (!effect->set_float(kv.first, kv.second)) {
161 luaL_error(L, "Effect refused set_float(\"%s\", %f) (invalid key?)", kv.first.c_str(), kv.second);
164 for (const auto &kv : blueprint->vec3_parameters) {
165 if (!effect->set_vec3(kv.first, kv.second.data())) {
166 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", kv.first.c_str(),
167 kv.second[0], kv.second[1], kv.second[2]);
170 for (const auto &kv : blueprint->vec4_parameters) {
171 if (!effect->set_vec4(kv.first, kv.second.data())) {
172 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", kv.first.c_str(),
173 kv.second[0], kv.second[1], kv.second[2], kv.second[3]);
176 blueprint->effect = effect;
180 InputStateInfo *get_input_state_info(lua_State *L, int idx)
182 if (luaL_testudata(L, idx, "InputStateInfo")) {
183 return (InputStateInfo *)lua_touserdata(L, idx);
185 luaL_error(L, "Error: Index #%d was not InputStateInfo\n", idx);
191 bool checkbool(lua_State* L, int idx)
193 luaL_checktype(L, idx, LUA_TBOOLEAN);
194 return lua_toboolean(L, idx);
197 string checkstdstring(lua_State *L, int index)
200 const char* cstr = lua_tolstring(L, index, &len);
201 return string(cstr, len);
206 int Scene_new(lua_State* L)
208 assert(lua_gettop(L) == 2);
209 Theme *theme = get_theme_updata(L);
210 int aspect_w = luaL_checknumber(L, 1);
211 int aspect_h = luaL_checknumber(L, 2);
213 return wrap_lua_object<Scene>(L, "Scene", theme, aspect_w, aspect_h);
216 int Scene_gc(lua_State* L)
218 assert(lua_gettop(L) == 1);
219 Scene *chain = (Scene *)luaL_checkudata(L, 1, "Scene");
226 void add_outputs_and_finalize(EffectChain *chain, bool is_main_chain)
228 // Add outputs as needed.
229 // NOTE: If you change any details about the output format, you will need to
230 // also update what's given to the muxer (HTTPD::Mux constructor) and
231 // what's put in the H.264 stream (sps_rbsp()).
232 ImageFormat inout_format;
233 inout_format.color_space = COLORSPACE_REC_709;
235 // Output gamma is tricky. We should output Rec. 709 for TV, except that
236 // we expect to run with web players and others that don't really care and
237 // just output with no conversion. So that means we'll need to output sRGB,
238 // even though H.264 has no setting for that (we use “unspecified”).
239 inout_format.gamma_curve = GAMMA_sRGB;
242 YCbCrFormat output_ycbcr_format;
243 // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
244 // happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
245 output_ycbcr_format.chroma_subsampling_x = 1;
246 output_ycbcr_format.chroma_subsampling_y = 1;
248 // This will be overridden if HDMI/SDI output is in force.
249 if (global_flags.ycbcr_rec709_coefficients) {
250 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
252 output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
255 output_ycbcr_format.full_range = false;
256 output_ycbcr_format.num_levels = 1 << global_flags.x264_bit_depth;
258 GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
260 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR, type);
262 // If we're using zerocopy video encoding (so the destination
263 // Y texture is owned by VA-API and will be unavailable for
264 // display), add a copy, where we'll only be using the Y component.
265 if (global_flags.use_zerocopy) {
266 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_INTERLEAVED, type); // Add a copy where we'll only be using the Y component.
268 chain->set_dither_bits(global_flags.x264_bit_depth > 8 ? 16 : 8);
269 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
271 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
279 int EffectChain_new(lua_State* L)
281 assert(lua_gettop(L) == 2);
282 Theme *theme = get_theme_updata(L);
283 int aspect_w = luaL_checknumber(L, 1);
284 int aspect_h = luaL_checknumber(L, 2);
286 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h, theme->get_resource_pool());
289 int EffectChain_gc(lua_State* L)
291 assert(lua_gettop(L) == 1);
292 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
293 chain->~EffectChain();
297 int EffectChain_add_live_input(lua_State* L)
299 assert(lua_gettop(L) == 3);
300 Theme *theme = get_theme_updata(L);
301 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
302 bool override_bounce = checkbool(L, 2);
303 bool deinterlace = checkbool(L, 3);
304 bmusb::PixelFormat pixel_format = global_flags.ten_bit_input ? bmusb::PixelFormat_10BitYCbCr : bmusb::PixelFormat_8BitYCbCr;
306 // Needs to be nonowned to match add_video_input (see below).
307 return wrap_lua_object_nonowned<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, pixel_format, override_bounce, deinterlace, /*user_connectable=*/true);
310 int EffectChain_add_video_input(lua_State* L)
312 assert(lua_gettop(L) == 3);
313 Theme *theme = get_theme_updata(L);
314 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
315 FFmpegCapture **capture = (FFmpegCapture **)luaL_checkudata(L, 2, "VideoInput");
316 bool deinterlace = checkbool(L, 3);
318 // These need to be nonowned, so that the LiveInputWrapper still exists
319 // and can feed frames to the right EffectChain even if the Lua code
320 // doesn't care about the object anymore. (If we change this, we'd need
321 // to also unregister the signal connection on __gc.)
322 int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
323 L, "LiveInputWrapper", theme, chain, (*capture)->get_current_pixel_format(),
324 /*override_bounce=*/false, deinterlace, /*user_connectable=*/false);
326 Theme *theme = get_theme_updata(L);
327 LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
328 theme->register_video_signal_connection(chain, *live_input, *capture);
334 int EffectChain_add_html_input(lua_State* L)
336 assert(lua_gettop(L) == 2);
337 Theme *theme = get_theme_updata(L);
338 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
339 CEFCapture **capture = (CEFCapture **)luaL_checkudata(L, 2, "HTMLInput");
341 // These need to be nonowned, so that the LiveInputWrapper still exists
342 // and can feed frames to the right EffectChain even if the Lua code
343 // doesn't care about the object anymore. (If we change this, we'd need
344 // to also unregister the signal connection on __gc.)
345 int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
346 L, "LiveInputWrapper", theme, chain, (*capture)->get_current_pixel_format(),
347 /*override_bounce=*/false, /*deinterlace=*/false, /*user_connectable=*/false);
349 Theme *theme = get_theme_updata(L);
350 LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
351 theme->register_html_signal_connection(chain, *live_input, *capture);
357 int EffectChain_add_effect(lua_State* L)
359 assert(lua_gettop(L) >= 2);
360 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
362 // TODO: Better error reporting.
364 if (luaL_testudata(L, 2, "ImageInput")) {
365 effect = *(ImageInput **)luaL_checkudata(L, 2, "ImageInput");
367 effect = get_effect_from_blueprint(chain, L, 2);
369 if (lua_gettop(L) == 2) {
370 if (effect->num_inputs() == 0) {
371 chain->add_input((Input *)effect);
373 chain->add_effect(effect);
376 vector<Effect *> inputs;
377 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
378 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
379 LiveInputWrapper **input = (LiveInputWrapper **)lua_touserdata(L, idx);
380 inputs.push_back((*input)->get_effect());
381 } else if (luaL_testudata(L, idx, "ImageInput")) {
382 ImageInput *image = *(ImageInput **)luaL_checkudata(L, idx, "ImageInput");
383 inputs.push_back(image);
385 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, idx, "EffectBlueprint");
386 assert(blueprint->effect != nullptr); // Parent must be added to the graph.
387 inputs.push_back(blueprint->effect);
390 chain->add_effect(effect, inputs);
393 lua_settop(L, 2); // Return the effect itself.
395 // Make sure Lua doesn't garbage-collect it away.
396 lua_pushvalue(L, -1);
397 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
402 int EffectChain_finalize(lua_State* L)
404 assert(lua_gettop(L) == 2);
405 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
406 bool is_main_chain = checkbool(L, 2);
407 add_outputs_and_finalize(chain, is_main_chain);
411 int LiveInputWrapper_connect_signal(lua_State* L)
413 assert(lua_gettop(L) == 2);
414 LiveInputWrapper **input = (LiveInputWrapper **)luaL_checkudata(L, 1, "LiveInputWrapper");
415 int signal_num = luaL_checknumber(L, 2);
416 bool success = (*input)->connect_signal(signal_num);
418 print_warning(L, "Calling connect_signal() on a video or HTML input. Ignoring.\n");
423 int ImageInput_new(lua_State* L)
425 assert(lua_gettop(L) == 1);
426 string filename = checkstdstring(L, 1);
427 return wrap_lua_object_nonowned<ImageInput>(L, "ImageInput", filename);
430 int VideoInput_new(lua_State* L)
432 assert(lua_gettop(L) == 2);
433 string filename = checkstdstring(L, 1);
434 int pixel_format = luaL_checknumber(L, 2);
435 if (pixel_format != bmusb::PixelFormat_8BitYCbCrPlanar &&
436 pixel_format != bmusb::PixelFormat_8BitBGRA) {
437 print_warning(L, "Invalid enum %d used for video format, choosing Y'CbCr.\n", pixel_format);
438 pixel_format = bmusb::PixelFormat_8BitYCbCrPlanar;
440 int ret = wrap_lua_object_nonowned<FFmpegCapture>(L, "VideoInput", filename, global_flags.width, global_flags.height);
442 FFmpegCapture **capture = (FFmpegCapture **)lua_touserdata(L, -1);
443 (*capture)->set_pixel_format(bmusb::PixelFormat(pixel_format));
445 Theme *theme = get_theme_updata(L);
446 theme->register_video_input(*capture);
451 int VideoInput_rewind(lua_State* L)
453 assert(lua_gettop(L) == 1);
454 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
455 (*video_input)->rewind();
459 int VideoInput_disconnect(lua_State* L)
461 assert(lua_gettop(L) == 1);
462 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
463 (*video_input)->disconnect();
467 int VideoInput_change_rate(lua_State* L)
469 assert(lua_gettop(L) == 2);
470 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
471 double new_rate = luaL_checknumber(L, 2);
472 (*video_input)->change_rate(new_rate);
476 int VideoInput_get_signal_num(lua_State* L)
478 assert(lua_gettop(L) == 1);
479 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
480 lua_pushnumber(L, -1 - (*video_input)->get_card_index());
484 int HTMLInput_new(lua_State* L)
487 assert(lua_gettop(L) == 1);
488 string url = checkstdstring(L, 1);
489 int ret = wrap_lua_object_nonowned<CEFCapture>(L, "HTMLInput", url, global_flags.width, global_flags.height);
491 CEFCapture **capture = (CEFCapture **)lua_touserdata(L, -1);
492 Theme *theme = get_theme_updata(L);
493 theme->register_html_input(*capture);
497 fprintf(stderr, "This version of Nageru has been compiled without CEF support.\n");
498 fprintf(stderr, "HTMLInput is not available.\n");
504 int HTMLInput_set_url(lua_State* L)
506 assert(lua_gettop(L) == 2);
507 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
508 string new_url = checkstdstring(L, 2);
509 (*video_input)->set_url(new_url);
513 int HTMLInput_reload(lua_State* L)
515 assert(lua_gettop(L) == 1);
516 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
517 (*video_input)->reload();
521 int HTMLInput_set_max_fps(lua_State* L)
523 assert(lua_gettop(L) == 2);
524 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
525 int max_fps = lrint(luaL_checknumber(L, 2));
526 (*video_input)->set_max_fps(max_fps);
530 int HTMLInput_execute_javascript_async(lua_State* L)
532 assert(lua_gettop(L) == 2);
533 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
534 string js = checkstdstring(L, 2);
535 (*video_input)->execute_javascript_async(js);
539 int HTMLInput_resize(lua_State* L)
541 assert(lua_gettop(L) == 3);
542 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
543 unsigned width = lrint(luaL_checknumber(L, 2));
544 unsigned height = lrint(luaL_checknumber(L, 3));
545 (*video_input)->resize(width, height);
549 int HTMLInput_get_signal_num(lua_State* L)
551 assert(lua_gettop(L) == 1);
552 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
553 lua_pushnumber(L, -1 - (*video_input)->get_card_index());
558 int IdentityEffect_new(lua_State* L)
560 assert(lua_gettop(L) == 0);
561 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", IDENTITY_EFFECT);
564 int WhiteBalanceEffect_new(lua_State* L)
566 assert(lua_gettop(L) == 0);
567 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", WHITE_BALANCE_EFFECT);
570 int ResampleEffect_new(lua_State* L)
572 assert(lua_gettop(L) == 0);
573 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", RESAMPLE_EFFECT);
576 int PaddingEffect_new(lua_State* L)
578 assert(lua_gettop(L) == 0);
579 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", PADDING_EFFECT);
582 int IntegralPaddingEffect_new(lua_State* L)
584 assert(lua_gettop(L) == 0);
585 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", INTEGRAL_PADDING_EFFECT);
588 int OverlayEffect_new(lua_State* L)
590 assert(lua_gettop(L) == 0);
591 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", OVERLAY_EFFECT);
594 int ResizeEffect_new(lua_State* L)
596 assert(lua_gettop(L) == 0);
597 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", RESIZE_EFFECT);
600 int MultiplyEffect_new(lua_State* L)
602 assert(lua_gettop(L) == 0);
603 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", MULTIPLY_EFFECT);
606 int MixEffect_new(lua_State* L)
608 assert(lua_gettop(L) == 0);
609 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", MIX_EFFECT);
612 int LiftGammaGainEffect_new(lua_State* L)
614 assert(lua_gettop(L) == 0);
615 return wrap_lua_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", LIFT_GAMMA_GAIN_EFFECT);
618 int InputStateInfo_get_width(lua_State* L)
620 assert(lua_gettop(L) == 2);
621 InputStateInfo *input_state_info = get_input_state_info(L, 1);
623 Theme *theme = get_theme_updata(L);
624 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
625 lua_pushnumber(L, input_state_info->last_width[signal_num]);
629 int InputStateInfo_get_height(lua_State* L)
631 assert(lua_gettop(L) == 2);
632 InputStateInfo *input_state_info = get_input_state_info(L, 1);
633 Theme *theme = get_theme_updata(L);
634 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
635 lua_pushnumber(L, input_state_info->last_height[signal_num]);
639 int InputStateInfo_get_frame_height(lua_State* L)
641 assert(lua_gettop(L) == 2);
642 InputStateInfo *input_state_info = get_input_state_info(L, 1);
643 Theme *theme = get_theme_updata(L);
644 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
645 unsigned height = input_state_info->last_height[signal_num];
646 if (input_state_info->last_interlaced[signal_num]) {
649 lua_pushnumber(L, height);
653 int InputStateInfo_get_interlaced(lua_State* L)
655 assert(lua_gettop(L) == 2);
656 InputStateInfo *input_state_info = get_input_state_info(L, 1);
657 Theme *theme = get_theme_updata(L);
658 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
659 lua_pushboolean(L, input_state_info->last_interlaced[signal_num]);
663 int InputStateInfo_get_has_signal(lua_State* L)
665 assert(lua_gettop(L) == 2);
666 InputStateInfo *input_state_info = get_input_state_info(L, 1);
667 Theme *theme = get_theme_updata(L);
668 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
669 lua_pushboolean(L, input_state_info->last_has_signal[signal_num]);
673 int InputStateInfo_get_is_connected(lua_State* L)
675 assert(lua_gettop(L) == 2);
676 InputStateInfo *input_state_info = get_input_state_info(L, 1);
677 Theme *theme = get_theme_updata(L);
678 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
679 lua_pushboolean(L, input_state_info->last_is_connected[signal_num]);
683 int InputStateInfo_get_frame_rate_nom(lua_State* L)
685 assert(lua_gettop(L) == 2);
686 InputStateInfo *input_state_info = get_input_state_info(L, 1);
687 Theme *theme = get_theme_updata(L);
688 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
689 lua_pushnumber(L, input_state_info->last_frame_rate_nom[signal_num]);
693 int InputStateInfo_get_frame_rate_den(lua_State* L)
695 assert(lua_gettop(L) == 2);
696 InputStateInfo *input_state_info = get_input_state_info(L, 1);
697 Theme *theme = get_theme_updata(L);
698 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
699 lua_pushnumber(L, input_state_info->last_frame_rate_den[signal_num]);
703 int InputStateInfo_get_last_subtitle(lua_State* L)
705 assert(lua_gettop(L) == 2);
706 InputStateInfo *input_state_info = get_input_state_info(L, 1);
707 Theme *theme = get_theme_updata(L);
708 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
709 if (!input_state_info->has_last_subtitle[signal_num]) {
712 lua_pushstring(L, input_state_info->last_subtitle[signal_num].c_str());
719 // Helper function to write e.g. “60” or “59.94”.
720 string format_frame_rate(int nom, int den)
723 if (nom % den == 0) {
724 snprintf(buf, sizeof(buf), "%d", nom / den);
726 snprintf(buf, sizeof(buf), "%.2f", double(nom) / den);
731 // Helper function to write e.g. “720p60”.
732 string get_human_readable_resolution(const InputStateInfo *input_state_info, int signal_num)
735 if (input_state_info->last_interlaced[signal_num]) {
736 snprintf(buf, sizeof(buf), "%di", input_state_info->last_height[signal_num] * 2);
738 // Show field rate instead of frame rate; really for cosmetics only
739 // (and actually contrary to EBU recommendations, although in line
740 // with typical user expectations).
741 return buf + format_frame_rate(input_state_info->last_frame_rate_nom[signal_num] * 2,
742 input_state_info->last_frame_rate_den[signal_num]);
744 snprintf(buf, sizeof(buf), "%dp", input_state_info->last_height[signal_num]);
745 return buf + format_frame_rate(input_state_info->last_frame_rate_nom[signal_num],
746 input_state_info->last_frame_rate_den[signal_num]);
752 int InputStateInfo_get_human_readable_resolution(lua_State* L)
754 assert(lua_gettop(L) == 2);
755 InputStateInfo *input_state_info = get_input_state_info(L, 1);
756 Theme *theme = get_theme_updata(L);
757 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
760 if (!input_state_info->last_is_connected[signal_num]) {
761 str = "disconnected";
762 } else if (input_state_info->last_height[signal_num] <= 0) {
764 } else if (!input_state_info->last_has_signal[signal_num]) {
765 if (input_state_info->last_height[signal_num] == 525) {
766 // Special mode for the USB3 cards.
769 str = get_human_readable_resolution(input_state_info, signal_num) + ", no signal";
772 str = get_human_readable_resolution(input_state_info, signal_num);
775 lua_pushstring(L, str.c_str());
780 int EffectBlueprint_set_int(lua_State *L)
782 assert(lua_gettop(L) == 3);
783 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 1, "EffectBlueprint");
784 string key = checkstdstring(L, 2);
785 float value = luaL_checknumber(L, 3);
786 if (blueprint->effect != nullptr) {
787 if (!blueprint->effect->set_int(key, value)) {
788 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
791 // TODO: check validity already here, if possible?
792 blueprint->int_parameters[key] = value;
797 int EffectBlueprint_set_float(lua_State *L)
799 assert(lua_gettop(L) == 3);
800 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 1, "EffectBlueprint");
801 string key = checkstdstring(L, 2);
802 float value = luaL_checknumber(L, 3);
803 if (blueprint->effect != nullptr) {
804 if (!blueprint->effect->set_float(key, value)) {
805 luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
808 // TODO: check validity already here, if possible?
809 blueprint->float_parameters[key] = value;
814 int EffectBlueprint_set_vec3(lua_State *L)
816 assert(lua_gettop(L) == 5);
817 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 1, "EffectBlueprint");
818 string key = checkstdstring(L, 2);
820 v[0] = luaL_checknumber(L, 3);
821 v[1] = luaL_checknumber(L, 4);
822 v[2] = luaL_checknumber(L, 5);
824 if (blueprint->effect != nullptr) {
825 if (!blueprint->effect->set_vec3(key, v.data())) {
826 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
830 // TODO: check validity already here, if possible?
831 blueprint->vec3_parameters[key] = v;
837 int EffectBlueprint_set_vec4(lua_State *L)
839 assert(lua_gettop(L) == 6);
840 EffectBlueprint *blueprint = *(EffectBlueprint **)luaL_checkudata(L, 1, "EffectBlueprint");
841 string key = checkstdstring(L, 2);
843 v[0] = luaL_checknumber(L, 3);
844 v[1] = luaL_checknumber(L, 4);
845 v[2] = luaL_checknumber(L, 5);
846 v[3] = luaL_checknumber(L, 6);
847 if (blueprint->effect != nullptr) {
848 if (!blueprint->effect->set_vec4(key, v.data())) {
849 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
850 v[0], v[1], v[2], v[3]);
853 // TODO: check validity already here, if possible?
854 blueprint->vec4_parameters[key] = v;
859 const luaL_Reg Scene_funcs[] = {
860 { "new", Scene_new },
861 { "__gc", Scene_gc },
862 { "add_input", Scene::add_input },
863 { "add_effect", Scene::add_effect },
864 { "add_optional_effect", Scene::add_optional_effect },
865 { "finalize", Scene::finalize },
869 const luaL_Reg Block_funcs[] = {
870 { "display", Block_display },
871 { "choose", Block_choose },
872 { "enable", Block_enable },
873 { "enable_if", Block_enable_if },
874 { "disable", Block_disable },
875 { "always_disable_if_disabled", Block_always_disable_if_disabled },
876 { "promise_to_disable_if_enabled", Block_promise_to_disable_if_enabled },
877 { "set_int", Block_set_int },
878 { "set_float", Block_set_float },
879 { "set_vec3", Block_set_vec3 },
880 { "set_vec4", Block_set_vec4 },
884 const luaL_Reg EffectBlueprint_funcs[] = {
885 // NOTE: No new() function; that's for the individual effects.
886 { "set_int", EffectBlueprint_set_int },
887 { "set_float", EffectBlueprint_set_float },
888 { "set_vec3", EffectBlueprint_set_vec3 },
889 { "set_vec4", EffectBlueprint_set_vec4 },
893 const luaL_Reg EffectChain_funcs[] = {
894 { "new", EffectChain_new },
895 { "__gc", EffectChain_gc },
896 { "add_live_input", EffectChain_add_live_input },
897 { "add_video_input", EffectChain_add_video_input },
899 { "add_html_input", EffectChain_add_html_input },
901 { "add_effect", EffectChain_add_effect },
902 { "finalize", EffectChain_finalize },
906 const luaL_Reg LiveInputWrapper_funcs[] = {
907 { "connect_signal", LiveInputWrapper_connect_signal },
911 const luaL_Reg ImageInput_funcs[] = {
912 { "new", ImageInput_new },
916 const luaL_Reg VideoInput_funcs[] = {
917 { "new", VideoInput_new },
918 { "rewind", VideoInput_rewind },
919 { "disconnect", VideoInput_disconnect },
920 { "change_rate", VideoInput_change_rate },
921 { "get_signal_num", VideoInput_get_signal_num },
925 const luaL_Reg HTMLInput_funcs[] = {
926 { "new", HTMLInput_new },
928 { "set_url", HTMLInput_set_url },
929 { "reload", HTMLInput_reload },
930 { "set_max_fps", HTMLInput_set_max_fps },
931 { "execute_javascript_async", HTMLInput_execute_javascript_async },
932 { "resize", HTMLInput_resize },
933 { "get_signal_num", HTMLInput_get_signal_num },
939 // All of these are solely for new(); the returned metatable will be that of
940 // EffectBlueprint, and Effect (returned from add_effect()) is its own type.
942 const luaL_Reg IdentityEffect_funcs[] = {
943 { "new", IdentityEffect_new },
947 const luaL_Reg WhiteBalanceEffect_funcs[] = {
948 { "new", WhiteBalanceEffect_new },
952 const luaL_Reg ResampleEffect_funcs[] = {
953 { "new", ResampleEffect_new },
957 const luaL_Reg PaddingEffect_funcs[] = {
958 { "new", PaddingEffect_new },
962 const luaL_Reg IntegralPaddingEffect_funcs[] = {
963 { "new", IntegralPaddingEffect_new },
967 const luaL_Reg OverlayEffect_funcs[] = {
968 { "new", OverlayEffect_new },
972 const luaL_Reg ResizeEffect_funcs[] = {
973 { "new", ResizeEffect_new },
977 const luaL_Reg MultiplyEffect_funcs[] = {
978 { "new", MultiplyEffect_new },
982 const luaL_Reg MixEffect_funcs[] = {
983 { "new", MixEffect_new },
987 const luaL_Reg LiftGammaGainEffect_funcs[] = {
988 { "new", LiftGammaGainEffect_new },
994 const luaL_Reg InputStateInfo_funcs[] = {
995 { "get_width", InputStateInfo_get_width },
996 { "get_height", InputStateInfo_get_height },
997 { "get_frame_width", InputStateInfo_get_width }, // Same as get_width().
998 { "get_frame_height", InputStateInfo_get_frame_height },
999 { "get_interlaced", InputStateInfo_get_interlaced },
1000 { "get_has_signal", InputStateInfo_get_has_signal },
1001 { "get_is_connected", InputStateInfo_get_is_connected },
1002 { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
1003 { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
1004 { "get_last_subtitle", InputStateInfo_get_last_subtitle },
1005 { "get_human_readable_resolution", InputStateInfo_get_human_readable_resolution },
1009 const luaL_Reg ThemeMenu_funcs[] = {
1010 { "set", ThemeMenu_set },
1016 LiveInputWrapper::LiveInputWrapper(
1019 bmusb::PixelFormat pixel_format,
1020 bool override_bounce,
1022 bool user_connectable)
1024 pixel_format(pixel_format),
1025 deinterlace(deinterlace),
1026 user_connectable(user_connectable)
1028 ImageFormat inout_format;
1029 inout_format.color_space = COLORSPACE_sRGB;
1031 // Gamma curve depends on the input signal, and we don't really get any
1032 // indications. A camera would be expected to do Rec. 709, but
1033 // I haven't checked if any do in practice. However, computers _do_ output
1034 // in sRGB gamma (ie., they don't convert from sRGB to Rec. 709), and
1035 // I wouldn't really be surprised if most non-professional cameras do, too.
1036 // So we pick sRGB as the least evil here.
1037 inout_format.gamma_curve = GAMMA_sRGB;
1039 unsigned num_inputs;
1041 deinterlace_effect = new movit::DeinterlaceEffect();
1043 // As per the comments in deinterlace_effect.h, we turn this off.
1044 // The most likely interlaced input for us is either a camera
1045 // (where it's fine to turn it off) or a laptop (where it _should_
1047 CHECK(deinterlace_effect->set_int("enable_spatial_interlacing_check", 0));
1049 num_inputs = deinterlace_effect->num_inputs();
1050 assert(num_inputs == FRAME_HISTORY_LENGTH);
1055 if (pixel_format == bmusb::PixelFormat_8BitBGRA) {
1056 for (unsigned i = 0; i < num_inputs; ++i) {
1057 // We upload our textures ourselves, and Movit swaps
1058 // R and B in the shader if we specify BGRA, so lie and say RGBA.
1059 rgba_inputs.push_back(new sRGBSwitchingFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
1060 chain->add_input(rgba_inputs.back());
1064 vector<Effect *> reverse_inputs(rgba_inputs.rbegin(), rgba_inputs.rend());
1065 chain->add_effect(deinterlace_effect, reverse_inputs);
1068 assert(pixel_format == bmusb::PixelFormat_8BitYCbCr ||
1069 pixel_format == bmusb::PixelFormat_10BitYCbCr ||
1070 pixel_format == bmusb::PixelFormat_8BitYCbCrPlanar);
1072 // Most of these settings will be overridden later if using PixelFormat_8BitYCbCrPlanar.
1073 input_ycbcr_format.chroma_subsampling_x = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1 : 2;
1074 input_ycbcr_format.chroma_subsampling_y = 1;
1075 input_ycbcr_format.num_levels = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1024 : 256;
1076 input_ycbcr_format.cb_x_position = 0.0;
1077 input_ycbcr_format.cr_x_position = 0.0;
1078 input_ycbcr_format.cb_y_position = 0.5;
1079 input_ycbcr_format.cr_y_position = 0.5;
1080 input_ycbcr_format.luma_coefficients = YCBCR_REC_709; // Will be overridden later even if not planar.
1081 input_ycbcr_format.full_range = false; // Will be overridden later even if not planar.
1083 for (unsigned i = 0; i < num_inputs; ++i) {
1084 // When using 10-bit input, we're converting to interleaved through v210Converter.
1085 YCbCrInputSplitting splitting;
1086 if (pixel_format == bmusb::PixelFormat_10BitYCbCr) {
1087 splitting = YCBCR_INPUT_INTERLEAVED;
1088 } else if (pixel_format == bmusb::PixelFormat_8BitYCbCr) {
1089 splitting = YCBCR_INPUT_SPLIT_Y_AND_CBCR;
1091 splitting = YCBCR_INPUT_PLANAR;
1093 if (override_bounce) {
1094 ycbcr_inputs.push_back(new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
1096 ycbcr_inputs.push_back(new YCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
1098 chain->add_input(ycbcr_inputs.back());
1102 vector<Effect *> reverse_inputs(ycbcr_inputs.rbegin(), ycbcr_inputs.rend());
1103 chain->add_effect(deinterlace_effect, reverse_inputs);
1108 bool LiveInputWrapper::connect_signal(int signal_num)
1110 if (!user_connectable) {
1114 if (global_mixer == nullptr) {
1119 signal_num = theme->map_signal(signal_num);
1120 connect_signal_raw(signal_num, *theme->input_state);
1124 void LiveInputWrapper::connect_signal_raw(int signal_num, const InputState &input_state)
1126 BufferedFrame first_frame = input_state.buffered_frames[signal_num][0];
1127 if (first_frame.frame == nullptr) {
1131 unsigned width, height;
1133 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)first_frame.frame->userdata;
1134 width = userdata->last_width[first_frame.field_number];
1135 height = userdata->last_height[first_frame.field_number];
1136 if (userdata->last_interlaced) {
1141 movit::YCbCrLumaCoefficients ycbcr_coefficients = input_state.ycbcr_coefficients[signal_num];
1142 bool full_range = input_state.full_range[signal_num];
1144 if (input_state.ycbcr_coefficients_auto[signal_num]) {
1147 // The Blackmagic driver docs claim that the device outputs Y'CbCr
1148 // according to Rec. 601, but this seems to indicate the subsampling
1149 // positions only, as they publish Y'CbCr → RGB formulas that are
1150 // different for HD and SD (corresponding to Rec. 709 and 601, respectively),
1151 // and a Lenovo X1 gen 3 I used to test definitely outputs Rec. 709
1152 // (at least up to rounding error). Other devices seem to use Rec. 601
1153 // even on HD resolutions. Nevertheless, Rec. 709 _is_ the right choice
1154 // for HD, so we default to that if the user hasn't set anything.
1155 if (height >= 720) {
1156 ycbcr_coefficients = YCBCR_REC_709;
1158 ycbcr_coefficients = YCBCR_REC_601;
1162 // This is a global, but it doesn't really matter.
1163 input_ycbcr_format.luma_coefficients = ycbcr_coefficients;
1164 input_ycbcr_format.full_range = full_range;
1166 BufferedFrame last_good_frame = first_frame;
1167 for (unsigned i = 0; i < max(ycbcr_inputs.size(), rgba_inputs.size()); ++i) {
1168 BufferedFrame frame = input_state.buffered_frames[signal_num][i];
1169 if (frame.frame == nullptr) {
1170 // Not enough data; reuse last frame (well, field).
1171 // This is suboptimal, but we have nothing better.
1172 frame = last_good_frame;
1174 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
1176 unsigned this_width = userdata->last_width[frame.field_number];
1177 unsigned this_height = userdata->last_height[frame.field_number];
1178 if (this_width != width || this_height != height) {
1179 // Resolution changed; reuse last frame/field.
1180 frame = last_good_frame;
1181 userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
1184 assert(userdata->pixel_format == pixel_format);
1185 switch (pixel_format) {
1186 case bmusb::PixelFormat_8BitYCbCr:
1187 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
1188 ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cbcr[frame.field_number]);
1189 ycbcr_inputs[i]->change_ycbcr_format(input_ycbcr_format);
1190 ycbcr_inputs[i]->set_width(width);
1191 ycbcr_inputs[i]->set_height(height);
1193 case bmusb::PixelFormat_8BitYCbCrPlanar:
1194 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
1195 ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cb[frame.field_number]);
1196 ycbcr_inputs[i]->set_texture_num(2, userdata->tex_cr[frame.field_number]);
1197 ycbcr_inputs[i]->change_ycbcr_format(userdata->ycbcr_format);
1198 ycbcr_inputs[i]->set_width(width);
1199 ycbcr_inputs[i]->set_height(height);
1201 case bmusb::PixelFormat_10BitYCbCr:
1202 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_444[frame.field_number]);
1203 ycbcr_inputs[i]->change_ycbcr_format(input_ycbcr_format);
1204 ycbcr_inputs[i]->set_width(width);
1205 ycbcr_inputs[i]->set_height(height);
1207 case bmusb::PixelFormat_8BitBGRA:
1208 rgba_inputs[i]->set_texture_num(userdata->tex_rgba[frame.field_number]);
1209 rgba_inputs[i]->set_width(width);
1210 rgba_inputs[i]->set_height(height);
1216 last_good_frame = frame;
1220 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
1221 CHECK(deinterlace_effect->set_int("current_field_position", frame.field_number));
1227 int call_num_channels(lua_State *L)
1229 lua_getglobal(L, "num_channels");
1231 if (lua_pcall(L, 0, 1, 0) != 0) {
1232 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
1233 fprintf(stderr, "Try Nageru.set_num_channels(...) at the start of the script instead.\n");
1237 int num_channels = luaL_checknumber(L, 1);
1239 assert(lua_gettop(L) == 0);
1240 return num_channels;
1245 int Nageru_set_channel_name(lua_State *L)
1247 // NOTE: m is already locked.
1248 Theme *theme = get_theme_updata(L);
1249 unsigned channel = luaL_checknumber(L, 1);
1250 const string text = checkstdstring(L, 2);
1251 theme->channel_names[channel] = text;
1256 int Nageru_set_num_channels(lua_State *L)
1258 // NOTE: m is already locked.
1259 Theme *theme = get_theme_updata(L);
1260 if (theme->startup_finished) {
1261 luaL_error(L, "set_num_channels() can only be called at startup.");
1263 theme->num_channels = luaL_checknumber(L, 1);
1268 int Nageru_set_channel_signal(lua_State *L)
1270 // NOTE: m is already locked.
1271 Theme *theme = get_theme_updata(L);
1272 if (theme->startup_finished) {
1273 luaL_error(L, "set_channel_signal() can only be called at startup.");
1275 unsigned channel = luaL_checknumber(L, 1);
1276 int signal = luaL_checknumber(L, 2);
1277 theme->channel_signals[channel] = signal;
1282 int Nageru_set_supports_wb(lua_State *L)
1284 // NOTE: m is already locked.
1285 Theme *theme = get_theme_updata(L);
1286 if (theme->startup_finished) {
1287 luaL_error(L, "set_supports_wb() can only be called at startup.");
1289 unsigned channel = luaL_checknumber(L, 1);
1290 bool supports_wb = checkbool(L, 2);
1291 theme->channel_supports_wb[channel] = supports_wb;
1296 Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
1297 : resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
1300 channel_names[0] = "Live";
1301 channel_names[1] = "Preview";
1303 L = luaL_newstate();
1306 // Search through all directories until we find a file that will load
1307 // (as in, does not return LUA_ERRFILE); then run it. We store load errors
1308 // from all the attempts, and show them once we know we can't find any of them.
1310 vector<string> errors;
1311 bool success = false;
1313 vector<string> real_search_dirs;
1314 if (!filename.empty() && filename[0] == '/') {
1315 real_search_dirs.push_back("");
1317 real_search_dirs = search_dirs;
1322 for (const string &dir : real_search_dirs) {
1326 path = dir + "/" + filename;
1328 int err = luaL_loadfile(L, path.c_str());
1330 // Save the theme for when we're actually going to run it
1331 // (we need to set up the right environment below first,
1332 // and we couldn't do that before, because we didn't know the
1333 // path to put in Nageru.THEME_PATH).
1334 theme_code_ref = luaL_ref(L, LUA_REGISTRYINDEX);
1335 assert(lua_gettop(L) == 0);
1340 errors.push_back(lua_tostring(L, -1));
1342 if (err != LUA_ERRFILE) {
1343 // The file actually loaded, but failed to parse somehow. Abort; don't try the next one.
1349 for (const string &error : errors) {
1350 fprintf(stderr, "%s\n", error.c_str());
1354 assert(lua_gettop(L) == 0);
1356 // Make sure the path exposed to the theme (as Nageru.THEME_PATH;
1357 // can be useful for locating files when talking to CEF) is absolute.
1358 // In a sense, it would be nice if realpath() had a mode not to
1359 // resolve symlinks, but it doesn't, so we only call it if we don't
1360 // already have an absolute path (which may leave ../ elements etc.).
1361 if (path[0] == '/') {
1364 char *absolute_theme_path = realpath(path.c_str(), nullptr);
1365 theme_path = absolute_theme_path;
1366 free(absolute_theme_path);
1369 // Set up the API we provide.
1371 register_class("Scene", Scene_funcs);
1372 register_class("Block", Block_funcs);
1373 register_class("EffectBlueprint", EffectBlueprint_funcs);
1374 register_class("EffectChain", EffectChain_funcs);
1375 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
1376 register_class("ImageInput", ImageInput_funcs);
1377 register_class("VideoInput", VideoInput_funcs);
1378 register_class("HTMLInput", HTMLInput_funcs);
1379 register_class("IdentityEffect", IdentityEffect_funcs, IDENTITY_EFFECT);
1380 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs, WHITE_BALANCE_EFFECT);
1381 register_class("ResampleEffect", ResampleEffect_funcs, RESAMPLE_EFFECT);
1382 register_class("PaddingEffect", PaddingEffect_funcs, PADDING_EFFECT);
1383 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs, INTEGRAL_PADDING_EFFECT);
1384 register_class("OverlayEffect", OverlayEffect_funcs, OVERLAY_EFFECT);
1385 register_class("ResizeEffect", ResizeEffect_funcs, RESIZE_EFFECT);
1386 register_class("MultiplyEffect", MultiplyEffect_funcs, MULTIPLY_EFFECT);
1387 register_class("MixEffect", MixEffect_funcs, MIX_EFFECT);
1388 register_class("LiftGammaGainEffect", LiftGammaGainEffect_funcs, LIFT_GAMMA_GAIN_EFFECT);
1389 register_class("InputStateInfo", InputStateInfo_funcs);
1390 register_class("ThemeMenu", ThemeMenu_funcs);
1392 // Now actually run the theme to get everything set up.
1393 lua_rawgeti(L, LUA_REGISTRYINDEX, theme_code_ref);
1394 luaL_unref(L, LUA_REGISTRYINDEX, theme_code_ref);
1395 if (lua_pcall(L, 0, 0, 0)) {
1396 fprintf(stderr, "Error when running %s: %s\n", path.c_str(), lua_tostring(L, -1));
1399 assert(lua_gettop(L) == 0);
1401 if (num_channels == -1) {
1402 // Ask it for the number of channels.
1403 num_channels = call_num_channels(L);
1405 startup_finished = true;
1414 void Theme::register_globals()
1416 // Set Nageru.VIDEO_FORMAT_BGRA = bmusb::PixelFormat_8BitBGRA, etc.
1417 const vector<pair<string, int>> num_constants = {
1418 { "VIDEO_FORMAT_BGRA", bmusb::PixelFormat_8BitBGRA },
1419 { "VIDEO_FORMAT_YCBCR", bmusb::PixelFormat_8BitYCbCrPlanar },
1420 { "CHECKABLE", MenuEntry::CHECKABLE },
1421 { "CHECKED", MenuEntry::CHECKED },
1423 const vector<pair<string, string>> str_constants = {
1424 { "THEME_PATH", theme_path },
1427 lua_newtable(L); // t = {}
1429 for (const pair<string, int> &constant : num_constants) {
1430 lua_pushstring(L, constant.first.c_str());
1431 lua_pushinteger(L, constant.second);
1432 lua_settable(L, 1); // t[key] = value
1434 for (const pair<string, string> &constant : str_constants) {
1435 lua_pushstring(L, constant.first.c_str());
1436 lua_pushstring(L, constant.second.c_str());
1437 lua_settable(L, 1); // t[key] = value
1440 const luaL_Reg Nageru_funcs[] = {
1441 { "set_channel_name", Nageru_set_channel_name },
1442 { "set_num_channels", Nageru_set_num_channels },
1443 { "set_channel_signal", Nageru_set_channel_signal },
1444 { "set_supports_wb", Nageru_set_supports_wb },
1447 lua_pushlightuserdata(L, this);
1448 luaL_setfuncs(L, Nageru_funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
1450 lua_setglobal(L, "Nageru"); // Nageru = t
1451 assert(lua_gettop(L) == 0);
1454 void Theme::register_class(const char *class_name, const luaL_Reg *funcs, EffectType effect_type)
1456 assert(lua_gettop(L) == 0);
1457 luaL_newmetatable(L, class_name); // mt = {}
1458 lua_pushlightuserdata(L, this);
1459 luaL_setfuncs(L, funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
1460 lua_pushvalue(L, -1);
1461 lua_setfield(L, -2, "__index"); // mt.__index = mt
1462 if (effect_type != NO_EFFECT_TYPE) {
1463 lua_pushnumber(L, effect_type);
1464 lua_setfield(L, -2, "__effect_type_id"); // mt.__effect_type_id = effect_type
1466 lua_setglobal(L, class_name); // ClassName = mt
1467 assert(lua_gettop(L) == 0);
1470 Theme::Chain Theme::get_chain_from_effect_chain(EffectChain *effect_chain, unsigned num, const InputState &input_state)
1472 if (!lua_isfunction(L, -1)) {
1473 fprintf(stderr, "Argument #-1 should be a function\n");
1476 lua_pushvalue(L, -1);
1477 shared_ptr<LuaRefWithDeleter> funcref(new LuaRefWithDeleter(&m, L, luaL_ref(L, LUA_REGISTRYINDEX)));
1481 chain.chain = effect_chain;
1482 chain.setup_chain = [this, funcref, input_state, effect_chain]{
1483 lock_guard<mutex> lock(m);
1485 assert(this->input_state == nullptr);
1486 this->input_state = &input_state;
1488 // Set up state, including connecting signals.
1489 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref->get());
1490 if (lua_pcall(L, 0, 0, 0) != 0) {
1491 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
1494 assert(lua_gettop(L) == 0);
1496 // The theme can't (or at least shouldn't!) call connect_signal() on
1497 // each FFmpeg or CEF input, so we'll do it here.
1498 if (video_signal_connections.count(effect_chain)) {
1499 for (const VideoSignalConnection &conn : video_signal_connections[effect_chain]) {
1500 conn.wrapper->connect_signal_raw(conn.source->get_card_index(), input_state);
1504 if (html_signal_connections.count(effect_chain)) {
1505 for (const CEFSignalConnection &conn : html_signal_connections[effect_chain]) {
1506 conn.wrapper->connect_signal_raw(conn.source->get_card_index(), input_state);
1511 this->input_state = nullptr;
1516 Theme::Chain Theme::get_chain(unsigned num, float t, unsigned width, unsigned height, const InputState &input_state)
1518 const char *func_name = "get_scene"; // For error reporting.
1521 lock_guard<mutex> lock(m);
1522 assert(lua_gettop(L) == 0);
1523 lua_getglobal(L, "get_scene"); /* function to be called */
1524 if (lua_isnil(L, -1)) {
1525 // Try the pre-1.9.0 name for compatibility.
1527 lua_getglobal(L, "get_chain");
1528 func_name = "get_chain";
1530 lua_pushnumber(L, num);
1531 lua_pushnumber(L, t);
1532 lua_pushnumber(L, width);
1533 lua_pushnumber(L, height);
1534 wrap_lua_object<InputStateInfo>(L, "InputStateInfo", input_state);
1536 if (lua_pcall(L, 5, LUA_MULTRET, 0) != 0) {
1537 fprintf(stderr, "error running function “%s”: %s\n", func_name, lua_tostring(L, -1));
1541 if (luaL_testudata(L, -1, "Scene") != nullptr) {
1542 if (lua_gettop(L) != 1) {
1543 luaL_error(L, "%s() for chain number %d returned an Scene, but also other items", func_name);
1545 Scene *auto_effect_chain = (Scene *)luaL_testudata(L, -1, "Scene");
1546 auto chain_and_setup = auto_effect_chain->get_chain(this, L, num, input_state);
1547 chain.chain = chain_and_setup.first;
1548 chain.setup_chain = move(chain_and_setup.second);
1549 } else if (luaL_testudata(L, -2, "EffectChain") != nullptr) {
1550 // Old-style (pre-Nageru 1.9.0) return of a single chain and prepare function.
1551 if (lua_gettop(L) != 2) {
1552 luaL_error(L, "%s() for chain number %d returned an EffectChain, but needs to also return a prepare function (or use Scene)", func_name);
1554 EffectChain *effect_chain = (EffectChain *)luaL_testudata(L, -2, "EffectChain");
1555 chain = get_chain_from_effect_chain(effect_chain, num, input_state);
1557 luaL_error(L, "%s() for chain number %d did not return an EffectChain or Scene\n", func_name, num);
1559 assert(lua_gettop(L) == 0);
1561 // TODO: Can we do better, e.g. by running setup_chain() and seeing what it references?
1562 // Actually, setup_chain does maybe hold all the references we need now anyway?
1563 chain.input_frames.reserve(num_cards * FRAME_HISTORY_LENGTH);
1564 for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
1565 for (unsigned frame_num = 0; frame_num < FRAME_HISTORY_LENGTH; ++frame_num) {
1566 chain.input_frames.push_back(input_state.buffered_frames[card_index][frame_num].frame);
1573 string Theme::get_channel_name(unsigned channel)
1575 lock_guard<mutex> lock(m);
1577 // We never ask the legacy channel_name() about live and preview.
1578 // The defaults are set in our constructor.
1579 if (channel == 0 || channel == 1) {
1580 return channel_names[channel];
1583 lua_getglobal(L, "channel_name");
1584 if (lua_isnil(L, -1)) {
1586 if (channel_names.count(channel)) {
1587 return channel_names[channel];
1589 return "(no title)";
1593 lua_pushnumber(L, channel);
1594 if (lua_pcall(L, 1, 1, 0) != 0) {
1595 fprintf(stderr, "error running function `channel_name': %s\n", lua_tostring(L, -1));
1598 const char *ret = lua_tostring(L, -1);
1599 if (ret == nullptr) {
1600 fprintf(stderr, "function `channel_name' returned nil for channel %d\n", channel);
1601 fprintf(stderr, "Try Nageru.set_channel_name(channel, name) at the start of the script instead.\n");
1605 string retstr = ret;
1607 assert(lua_gettop(L) == 0);
1611 int Theme::get_channel_signal(unsigned channel)
1613 lock_guard<mutex> lock(m);
1614 lua_getglobal(L, "channel_signal");
1615 if (lua_isnil(L, -1)) {
1617 if (channel_signals.count(channel)) {
1618 return channel_signals[channel];
1624 lua_pushnumber(L, channel);
1625 if (lua_pcall(L, 1, 1, 0) != 0) {
1626 fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
1627 fprintf(stderr, "Try Nageru.set_channel_signal(channel, signal) at the start of the script instead.\n");
1631 int ret = luaL_checknumber(L, 1);
1633 assert(lua_gettop(L) == 0);
1637 std::string Theme::get_channel_color(unsigned channel)
1639 lock_guard<mutex> lock(m);
1640 lua_getglobal(L, "channel_color");
1641 lua_pushnumber(L, channel);
1642 if (lua_pcall(L, 1, 1, 0) != 0) {
1643 fprintf(stderr, "error running function `channel_color': %s\n", lua_tostring(L, -1));
1647 const char *ret = lua_tostring(L, -1);
1648 if (ret == nullptr) {
1649 fprintf(stderr, "function `channel_color' returned nil for channel %d\n", channel);
1653 string retstr = ret;
1655 assert(lua_gettop(L) == 0);
1659 bool Theme::get_supports_set_wb(unsigned channel)
1661 lock_guard<mutex> lock(m);
1662 lua_getglobal(L, "supports_set_wb");
1663 if (lua_isnil(L, -1)) {
1665 if (channel_supports_wb.count(channel)) {
1666 return channel_supports_wb[channel];
1672 lua_pushnumber(L, channel);
1673 if (lua_pcall(L, 1, 1, 0) != 0) {
1674 fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
1675 fprintf(stderr, "Try Nageru.set_supports_wb(channel, bool) at the start of the script instead.\n");
1679 bool ret = checkbool(L, -1);
1681 assert(lua_gettop(L) == 0);
1685 void Theme::set_wb(unsigned channel, double r, double g, double b)
1687 lock_guard<mutex> lock(m);
1688 lua_getglobal(L, "set_wb");
1689 lua_pushnumber(L, channel);
1690 lua_pushnumber(L, r);
1691 lua_pushnumber(L, g);
1692 lua_pushnumber(L, b);
1693 if (lua_pcall(L, 4, 0, 0) != 0) {
1694 fprintf(stderr, "error running function `set_wb': %s\n", lua_tostring(L, -1));
1698 assert(lua_gettop(L) == 0);
1701 vector<string> Theme::get_transition_names(float t)
1703 lock_guard<mutex> lock(m);
1704 lua_getglobal(L, "get_transitions");
1705 lua_pushnumber(L, t);
1706 if (lua_pcall(L, 1, 1, 0) != 0) {
1707 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
1713 while (lua_next(L, -2) != 0) {
1714 ret.push_back(lua_tostring(L, -1));
1718 assert(lua_gettop(L) == 0);
1722 int Theme::map_signal(int signal_num)
1724 // Negative numbers map to raw signals.
1725 if (signal_num < 0) {
1726 return -1 - signal_num;
1729 lock_guard<mutex> lock(map_m);
1730 if (signal_to_card_mapping.count(signal_num)) {
1731 return signal_to_card_mapping[signal_num];
1735 if (global_flags.output_card != -1 && num_cards > 1) {
1736 // Try to exclude the output card from the default card_index.
1737 card_index = signal_num % (num_cards - 1);
1738 if (card_index >= global_flags.output_card) {
1741 if (signal_num >= int(num_cards - 1)) {
1742 print_warning(L, "Theme asked for input %d, but we only have %u input card(s) (card %d is busy with output).\n",
1743 signal_num, num_cards - 1, global_flags.output_card);
1744 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1747 card_index = signal_num % num_cards;
1748 if (signal_num >= int(num_cards)) {
1749 print_warning(L, "Theme asked for input %d, but we only have %u card(s).\n", signal_num, num_cards);
1750 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1753 signal_to_card_mapping[signal_num] = card_index;
1757 void Theme::set_signal_mapping(int signal_num, int card_num)
1759 lock_guard<mutex> lock(map_m);
1760 assert(card_num < int(num_cards));
1761 signal_to_card_mapping[signal_num] = card_num;
1764 void Theme::transition_clicked(int transition_num, float t)
1766 lock_guard<mutex> lock(m);
1767 lua_getglobal(L, "transition_clicked");
1768 lua_pushnumber(L, transition_num);
1769 lua_pushnumber(L, t);
1771 if (lua_pcall(L, 2, 0, 0) != 0) {
1772 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
1775 assert(lua_gettop(L) == 0);
1778 void Theme::channel_clicked(int preview_num)
1780 lock_guard<mutex> lock(m);
1781 lua_getglobal(L, "channel_clicked");
1782 lua_pushnumber(L, preview_num);
1784 if (lua_pcall(L, 1, 0, 0) != 0) {
1785 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));
1788 assert(lua_gettop(L) == 0);
1792 void destroy(T &ref)
1797 Theme::MenuEntry::~MenuEntry()
1802 luaL_unref(entry.L, LUA_REGISTRYINDEX, entry.lua_ref);
1808 vector<unique_ptr<Theme::MenuEntry>> create_recursive_theme_menu(lua_State *L);
1810 unique_ptr<Theme::MenuEntry> create_theme_menu_entry(lua_State *L, int index)
1812 unique_ptr<Theme::MenuEntry> entry;
1814 lua_rawgeti(L, index, 1);
1815 const string text = checkstdstring(L, -1);
1819 if (lua_objlen(L, -1) > 2) {
1820 lua_rawgeti(L, -1, 3);
1821 flags = luaL_checknumber(L, -1);
1825 lua_rawgeti(L, index, 2);
1826 if (lua_istable(L, -1)) {
1827 vector<unique_ptr<Theme::MenuEntry>> submenu = create_recursive_theme_menu(L);
1828 entry.reset(new Theme::MenuEntry{ text, move(submenu) });
1831 luaL_checktype(L, -1, LUA_TFUNCTION);
1832 int ref = luaL_ref(L, LUA_REGISTRYINDEX);
1833 entry.reset(new Theme::MenuEntry{ text, L, ref, flags });
1838 vector<unique_ptr<Theme::MenuEntry>> create_recursive_theme_menu(lua_State *L)
1840 vector<unique_ptr<Theme::MenuEntry>> menu;
1841 size_t num_elements = lua_objlen(L, -1);
1842 for (size_t i = 1; i <= num_elements; ++i) {
1843 lua_rawgeti(L, -1, i);
1844 menu.emplace_back(create_theme_menu_entry(L, -1));
1852 int Theme::set_theme_menu(lua_State *L)
1856 vector<unique_ptr<MenuEntry>> root_menu;
1857 int num_elements = lua_gettop(L);
1858 for (int i = 1; i <= num_elements; ++i) {
1859 root_menu.emplace_back(create_theme_menu_entry(L, i));
1861 theme_menu.reset(new MenuEntry("", move(root_menu)));
1863 lua_pop(L, num_elements);
1864 assert(lua_gettop(L) == 0);
1866 if (theme_menu_callback != nullptr) {
1867 theme_menu_callback();
1873 void Theme::theme_menu_entry_clicked(int lua_ref)
1875 lock_guard<mutex> lock(m);
1876 lua_rawgeti(L, LUA_REGISTRYINDEX, lua_ref);
1877 if (lua_pcall(L, 0, 0, 0) != 0) {
1878 fprintf(stderr, "error running menu callback: %s\n", lua_tostring(L, -1));
1883 string Theme::format_status_line(const string &disk_space_left_text, double file_length_seconds)
1885 lock_guard<mutex> lock(m);
1886 lua_getglobal(L, "format_status_line");
1887 if (lua_isnil(L, -1)) {
1889 return disk_space_left_text;
1892 lua_pushstring(L, disk_space_left_text.c_str());
1893 lua_pushnumber(L, file_length_seconds);
1894 if (lua_pcall(L, 2, 1, 0) != 0) {
1895 fprintf(stderr, "error running function format_status_line(): %s\n", lua_tostring(L, -1));
1898 string text = checkstdstring(L, 1);
1900 assert(lua_gettop(L) == 0);