4 #include <bmusb/bmusb.h>
8 #include <movit/deinterlace_effect.h>
9 #include <movit/effect.h>
10 #include <movit/effect_chain.h>
11 #include <movit/image_format.h>
12 #include <movit/input.h>
13 #include <movit/lift_gamma_gain_effect.h>
14 #include <movit/mix_effect.h>
15 #include <movit/multiply_effect.h>
16 #include <movit/overlay_effect.h>
17 #include <movit/padding_effect.h>
18 #include <movit/resample_effect.h>
19 #include <movit/resize_effect.h>
20 #include <movit/util.h>
21 #include <movit/white_balance_effect.h>
22 #include <movit/ycbcr.h>
23 #include <movit/ycbcr_input.h>
33 #include "cef_capture.h"
35 #include "ffmpeg_capture.h"
37 #include "image_input.h"
38 #include "input_state.h"
39 #include "pbo_frame_allocator.h"
48 using namespace movit;
50 extern Mixer *global_mixer;
52 Theme *get_theme_updata(lua_State* L)
54 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
55 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
58 int ThemeMenu_set(lua_State *L)
60 Theme *theme = get_theme_updata(L);
61 return theme->set_theme_menu(L);
66 // Contains basically the same data as InputState, but does not hold on to
67 // a reference to the frames. This is important so that we can release them
68 // without having to wait for Lua's GC.
69 struct InputStateInfo {
70 InputStateInfo(const InputState& input_state);
72 unsigned last_width[MAX_VIDEO_CARDS], last_height[MAX_VIDEO_CARDS];
73 bool last_interlaced[MAX_VIDEO_CARDS], last_has_signal[MAX_VIDEO_CARDS], last_is_connected[MAX_VIDEO_CARDS];
74 unsigned last_frame_rate_nom[MAX_VIDEO_CARDS], last_frame_rate_den[MAX_VIDEO_CARDS];
75 bool has_last_subtitle[MAX_VIDEO_CARDS];
76 std::string last_subtitle[MAX_VIDEO_CARDS];
79 InputStateInfo::InputStateInfo(const InputState &input_state)
81 for (unsigned signal_num = 0; signal_num < MAX_VIDEO_CARDS; ++signal_num) {
82 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
83 if (frame.frame == nullptr) {
84 last_width[signal_num] = last_height[signal_num] = 0;
85 last_interlaced[signal_num] = false;
86 last_has_signal[signal_num] = false;
87 last_is_connected[signal_num] = false;
90 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
91 last_width[signal_num] = userdata->last_width[frame.field_number];
92 last_height[signal_num] = userdata->last_height[frame.field_number];
93 last_interlaced[signal_num] = userdata->last_interlaced;
94 last_has_signal[signal_num] = userdata->last_has_signal;
95 last_is_connected[signal_num] = userdata->last_is_connected;
96 last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
97 last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
98 has_last_subtitle[signal_num] = userdata->has_last_subtitle;
99 last_subtitle[signal_num] = userdata->last_subtitle;
103 class LuaRefWithDeleter {
105 LuaRefWithDeleter(mutex *m, lua_State *L, int ref) : m(m), L(L), ref(ref) {}
106 ~LuaRefWithDeleter() {
107 lock_guard<mutex> lock(*m);
108 luaL_unref(L, LUA_REGISTRYINDEX, ref);
110 int get() const { return ref; }
113 LuaRefWithDeleter(const LuaRefWithDeleter &) = delete;
120 template<class T, class... Args>
121 int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
123 // Construct the C++ object and put it on the stack.
124 void *mem = lua_newuserdata(L, sizeof(T));
125 new(mem) T(forward<Args>(args)...);
127 // Look up the metatable named <class_name>, and set it on the new object.
128 luaL_getmetatable(L, class_name);
129 lua_setmetatable(L, -2);
134 // Like wrap_lua_object, but the object is not owned by Lua; ie. it's not freed
135 // by Lua GC. This is typically the case for Effects, which are owned by EffectChain
136 // and expected to be destructed by it. The object will be of type T** instead of T*
137 // when exposed to Lua.
139 // Note that we currently leak if you allocate an Effect in this way and never call
140 // add_effect. We should see if there's a way to e.g. set __gc on it at construction time
141 // and then release that once add_effect() takes ownership.
142 template<class T, class... Args>
143 int wrap_lua_object_nonowned(lua_State* L, const char *class_name, Args&&... args)
145 // Construct the pointer ot the C++ object and put it on the stack.
146 T **obj = (T **)lua_newuserdata(L, sizeof(T *));
147 *obj = new T(forward<Args>(args)...);
149 // Look up the metatable named <class_name>, and set it on the new object.
150 luaL_getmetatable(L, class_name);
151 lua_setmetatable(L, -2);
156 Effect *get_effect(lua_State *L, int idx)
158 if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
159 luaL_testudata(L, idx, "ResampleEffect") ||
160 luaL_testudata(L, idx, "PaddingEffect") ||
161 luaL_testudata(L, idx, "IntegralPaddingEffect") ||
162 luaL_testudata(L, idx, "OverlayEffect") ||
163 luaL_testudata(L, idx, "ResizeEffect") ||
164 luaL_testudata(L, idx, "MultiplyEffect") ||
165 luaL_testudata(L, idx, "MixEffect") ||
166 luaL_testudata(L, idx, "LiftGammaGainEffect") ||
167 luaL_testudata(L, idx, "ImageInput")) {
168 return *(Effect **)lua_touserdata(L, idx);
170 luaL_error(L, "Error: Index #%d was not an Effect type\n", idx);
174 InputStateInfo *get_input_state_info(lua_State *L, int idx)
176 if (luaL_testudata(L, idx, "InputStateInfo")) {
177 return (InputStateInfo *)lua_touserdata(L, idx);
179 luaL_error(L, "Error: Index #%d was not InputStateInfo\n", idx);
183 bool checkbool(lua_State* L, int idx)
185 luaL_checktype(L, idx, LUA_TBOOLEAN);
186 return lua_toboolean(L, idx);
189 string checkstdstring(lua_State *L, int index)
192 const char* cstr = lua_tolstring(L, index, &len);
193 return string(cstr, len);
196 void add_outputs_and_finalize(EffectChain *chain, bool is_main_chain)
198 // Add outputs as needed.
199 // NOTE: If you change any details about the output format, you will need to
200 // also update what's given to the muxer (HTTPD::Mux constructor) and
201 // what's put in the H.264 stream (sps_rbsp()).
202 ImageFormat inout_format;
203 inout_format.color_space = COLORSPACE_REC_709;
205 // Output gamma is tricky. We should output Rec. 709 for TV, except that
206 // we expect to run with web players and others that don't really care and
207 // just output with no conversion. So that means we'll need to output sRGB,
208 // even though H.264 has no setting for that (we use “unspecified”).
209 inout_format.gamma_curve = GAMMA_sRGB;
212 YCbCrFormat output_ycbcr_format;
213 // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
214 // happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
215 output_ycbcr_format.chroma_subsampling_x = 1;
216 output_ycbcr_format.chroma_subsampling_y = 1;
218 // This will be overridden if HDMI/SDI output is in force.
219 if (global_flags.ycbcr_rec709_coefficients) {
220 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
222 output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
225 output_ycbcr_format.full_range = false;
226 output_ycbcr_format.num_levels = 1 << global_flags.x264_bit_depth;
228 GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
230 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR, type);
232 // If we're using zerocopy video encoding (so the destination
233 // Y texture is owned by VA-API and will be unavailable for
234 // display), add a copy, where we'll only be using the Y component.
235 if (global_flags.use_zerocopy) {
236 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.
238 chain->set_dither_bits(global_flags.x264_bit_depth > 8 ? 16 : 8);
239 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
241 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
247 int EffectChain_new(lua_State* L)
249 assert(lua_gettop(L) == 2);
250 Theme *theme = get_theme_updata(L);
251 int aspect_w = luaL_checknumber(L, 1);
252 int aspect_h = luaL_checknumber(L, 2);
254 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h, theme->get_resource_pool());
257 int EffectChain_gc(lua_State* L)
259 assert(lua_gettop(L) == 1);
260 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
261 chain->~EffectChain();
265 int EffectChain_add_live_input(lua_State* L)
267 assert(lua_gettop(L) == 3);
268 Theme *theme = get_theme_updata(L);
269 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
270 bool override_bounce = checkbool(L, 2);
271 bool deinterlace = checkbool(L, 3);
272 bmusb::PixelFormat pixel_format = global_flags.ten_bit_input ? bmusb::PixelFormat_10BitYCbCr : bmusb::PixelFormat_8BitYCbCr;
274 // Needs to be nonowned to match add_video_input (see below).
275 return wrap_lua_object_nonowned<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, pixel_format, override_bounce, deinterlace, /*user_connectable=*/true);
278 int EffectChain_add_video_input(lua_State* L)
280 assert(lua_gettop(L) == 3);
281 Theme *theme = get_theme_updata(L);
282 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
283 FFmpegCapture **capture = (FFmpegCapture **)luaL_checkudata(L, 2, "VideoInput");
284 bool deinterlace = checkbool(L, 3);
286 // These need to be nonowned, so that the LiveInputWrapper still exists
287 // and can feed frames to the right EffectChain even if the Lua code
288 // doesn't care about the object anymore. (If we change this, we'd need
289 // to also unregister the signal connection on __gc.)
290 int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
291 L, "LiveInputWrapper", theme, chain, (*capture)->get_current_pixel_format(),
292 /*override_bounce=*/false, deinterlace, /*user_connectable=*/false);
294 Theme *theme = get_theme_updata(L);
295 LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
296 theme->register_video_signal_connection(chain, *live_input, *capture);
302 int EffectChain_add_html_input(lua_State* L)
304 assert(lua_gettop(L) == 2);
305 Theme *theme = get_theme_updata(L);
306 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
307 CEFCapture **capture = (CEFCapture **)luaL_checkudata(L, 2, "HTMLInput");
309 // These need to be nonowned, so that the LiveInputWrapper still exists
310 // and can feed frames to the right EffectChain even if the Lua code
311 // doesn't care about the object anymore. (If we change this, we'd need
312 // to also unregister the signal connection on __gc.)
313 int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
314 L, "LiveInputWrapper", theme, chain, (*capture)->get_current_pixel_format(),
315 /*override_bounce=*/false, /*deinterlace=*/false, /*user_connectable=*/false);
317 Theme *theme = get_theme_updata(L);
318 LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
319 theme->register_html_signal_connection(chain, *live_input, *capture);
325 int EffectChain_add_effect(lua_State* L)
327 assert(lua_gettop(L) >= 2);
328 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
330 // TODO: Better error reporting.
331 Effect *effect = get_effect(L, 2);
332 if (lua_gettop(L) == 2) {
333 if (effect->num_inputs() == 0) {
334 chain->add_input((Input *)effect);
336 chain->add_effect(effect);
339 vector<Effect *> inputs;
340 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
341 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
342 LiveInputWrapper **input = (LiveInputWrapper **)lua_touserdata(L, idx);
343 inputs.push_back((*input)->get_effect());
345 inputs.push_back(get_effect(L, idx));
348 chain->add_effect(effect, inputs);
351 lua_settop(L, 2); // Return the effect itself.
353 // Make sure Lua doesn't garbage-collect it away.
354 lua_pushvalue(L, -1);
355 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
360 int EffectChain_finalize(lua_State* L)
362 assert(lua_gettop(L) == 2);
363 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
364 bool is_main_chain = checkbool(L, 2);
365 add_outputs_and_finalize(chain, is_main_chain);
369 int LiveInputWrapper_connect_signal(lua_State* L)
371 assert(lua_gettop(L) == 2);
372 LiveInputWrapper **input = (LiveInputWrapper **)luaL_checkudata(L, 1, "LiveInputWrapper");
373 int signal_num = luaL_checknumber(L, 2);
374 bool success = (*input)->connect_signal(signal_num);
377 lua_getstack(L, 1, &ar);
378 lua_getinfo(L, "nSl", &ar);
379 fprintf(stderr, "ERROR: %s:%d: Calling connect_signal() on a video or HTML input. Ignoring.\n",
380 ar.source, ar.currentline);
385 int ImageInput_new(lua_State* L)
387 assert(lua_gettop(L) == 1);
388 string filename = checkstdstring(L, 1);
389 return wrap_lua_object_nonowned<ImageInput>(L, "ImageInput", filename);
392 int VideoInput_new(lua_State* L)
394 assert(lua_gettop(L) == 2);
395 string filename = checkstdstring(L, 1);
396 int pixel_format = luaL_checknumber(L, 2);
397 if (pixel_format != bmusb::PixelFormat_8BitYCbCrPlanar &&
398 pixel_format != bmusb::PixelFormat_8BitBGRA) {
399 fprintf(stderr, "WARNING: Invalid enum %d used for video format, choosing Y'CbCr.\n",
401 pixel_format = bmusb::PixelFormat_8BitYCbCrPlanar;
403 int ret = wrap_lua_object_nonowned<FFmpegCapture>(L, "VideoInput", filename, global_flags.width, global_flags.height);
405 FFmpegCapture **capture = (FFmpegCapture **)lua_touserdata(L, -1);
406 (*capture)->set_pixel_format(bmusb::PixelFormat(pixel_format));
408 Theme *theme = get_theme_updata(L);
409 theme->register_video_input(*capture);
414 int VideoInput_rewind(lua_State* L)
416 assert(lua_gettop(L) == 1);
417 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
418 (*video_input)->rewind();
422 int VideoInput_disconnect(lua_State* L)
424 assert(lua_gettop(L) == 1);
425 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
426 (*video_input)->disconnect();
430 int VideoInput_change_rate(lua_State* L)
432 assert(lua_gettop(L) == 2);
433 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
434 double new_rate = luaL_checknumber(L, 2);
435 (*video_input)->change_rate(new_rate);
439 int VideoInput_get_signal_num(lua_State* L)
441 assert(lua_gettop(L) == 1);
442 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
443 lua_pushnumber(L, -1 - (*video_input)->get_card_index());
447 int HTMLInput_new(lua_State* L)
450 assert(lua_gettop(L) == 1);
451 string url = checkstdstring(L, 1);
452 int ret = wrap_lua_object_nonowned<CEFCapture>(L, "HTMLInput", url, global_flags.width, global_flags.height);
454 CEFCapture **capture = (CEFCapture **)lua_touserdata(L, -1);
455 Theme *theme = get_theme_updata(L);
456 theme->register_html_input(*capture);
460 fprintf(stderr, "This version of Nageru has been compiled without CEF support.\n");
461 fprintf(stderr, "HTMLInput is not available.\n");
467 int HTMLInput_set_url(lua_State* L)
469 assert(lua_gettop(L) == 2);
470 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
471 string new_url = checkstdstring(L, 2);
472 (*video_input)->set_url(new_url);
476 int HTMLInput_reload(lua_State* L)
478 assert(lua_gettop(L) == 1);
479 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
480 (*video_input)->reload();
484 int HTMLInput_set_max_fps(lua_State* L)
486 assert(lua_gettop(L) == 2);
487 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
488 int max_fps = lrint(luaL_checknumber(L, 2));
489 (*video_input)->set_max_fps(max_fps);
493 int HTMLInput_execute_javascript_async(lua_State* L)
495 assert(lua_gettop(L) == 2);
496 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
497 string js = checkstdstring(L, 2);
498 (*video_input)->execute_javascript_async(js);
502 int HTMLInput_resize(lua_State* L)
504 assert(lua_gettop(L) == 3);
505 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
506 unsigned width = lrint(luaL_checknumber(L, 2));
507 unsigned height = lrint(luaL_checknumber(L, 3));
508 (*video_input)->resize(width, height);
512 int HTMLInput_get_signal_num(lua_State* L)
514 assert(lua_gettop(L) == 1);
515 CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
516 lua_pushnumber(L, -1 - (*video_input)->get_card_index());
521 int WhiteBalanceEffect_new(lua_State* L)
523 assert(lua_gettop(L) == 0);
524 return wrap_lua_object_nonowned<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
527 int ResampleEffect_new(lua_State* L)
529 assert(lua_gettop(L) == 0);
530 return wrap_lua_object_nonowned<ResampleEffect>(L, "ResampleEffect");
533 int PaddingEffect_new(lua_State* L)
535 assert(lua_gettop(L) == 0);
536 return wrap_lua_object_nonowned<PaddingEffect>(L, "PaddingEffect");
539 int IntegralPaddingEffect_new(lua_State* L)
541 assert(lua_gettop(L) == 0);
542 return wrap_lua_object_nonowned<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
545 int OverlayEffect_new(lua_State* L)
547 assert(lua_gettop(L) == 0);
548 return wrap_lua_object_nonowned<OverlayEffect>(L, "OverlayEffect");
551 int ResizeEffect_new(lua_State* L)
553 assert(lua_gettop(L) == 0);
554 return wrap_lua_object_nonowned<ResizeEffect>(L, "ResizeEffect");
557 int MultiplyEffect_new(lua_State* L)
559 assert(lua_gettop(L) == 0);
560 return wrap_lua_object_nonowned<MultiplyEffect>(L, "MultiplyEffect");
563 int MixEffect_new(lua_State* L)
565 assert(lua_gettop(L) == 0);
566 return wrap_lua_object_nonowned<MixEffect>(L, "MixEffect");
569 int LiftGammaGainEffect_new(lua_State* L)
571 assert(lua_gettop(L) == 0);
572 return wrap_lua_object_nonowned<LiftGammaGainEffect>(L, "LiftGammaGainEffect");
575 int InputStateInfo_get_width(lua_State* L)
577 assert(lua_gettop(L) == 2);
578 InputStateInfo *input_state_info = get_input_state_info(L, 1);
579 Theme *theme = get_theme_updata(L);
580 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
581 lua_pushnumber(L, input_state_info->last_width[signal_num]);
585 int InputStateInfo_get_height(lua_State* L)
587 assert(lua_gettop(L) == 2);
588 InputStateInfo *input_state_info = get_input_state_info(L, 1);
589 Theme *theme = get_theme_updata(L);
590 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
591 lua_pushnumber(L, input_state_info->last_height[signal_num]);
595 int InputStateInfo_get_interlaced(lua_State* L)
597 assert(lua_gettop(L) == 2);
598 InputStateInfo *input_state_info = get_input_state_info(L, 1);
599 Theme *theme = get_theme_updata(L);
600 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
601 lua_pushboolean(L, input_state_info->last_interlaced[signal_num]);
605 int InputStateInfo_get_has_signal(lua_State* L)
607 assert(lua_gettop(L) == 2);
608 InputStateInfo *input_state_info = get_input_state_info(L, 1);
609 Theme *theme = get_theme_updata(L);
610 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
611 lua_pushboolean(L, input_state_info->last_has_signal[signal_num]);
615 int InputStateInfo_get_is_connected(lua_State* L)
617 assert(lua_gettop(L) == 2);
618 InputStateInfo *input_state_info = get_input_state_info(L, 1);
619 Theme *theme = get_theme_updata(L);
620 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
621 lua_pushboolean(L, input_state_info->last_is_connected[signal_num]);
625 int InputStateInfo_get_frame_rate_nom(lua_State* L)
627 assert(lua_gettop(L) == 2);
628 InputStateInfo *input_state_info = get_input_state_info(L, 1);
629 Theme *theme = get_theme_updata(L);
630 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
631 lua_pushnumber(L, input_state_info->last_frame_rate_nom[signal_num]);
635 int InputStateInfo_get_frame_rate_den(lua_State* L)
637 assert(lua_gettop(L) == 2);
638 InputStateInfo *input_state_info = get_input_state_info(L, 1);
639 Theme *theme = get_theme_updata(L);
640 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
641 lua_pushnumber(L, input_state_info->last_frame_rate_den[signal_num]);
645 int InputStateInfo_get_last_subtitle(lua_State* L)
647 assert(lua_gettop(L) == 2);
648 InputStateInfo *input_state_info = get_input_state_info(L, 1);
649 Theme *theme = get_theme_updata(L);
650 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
651 if (!input_state_info->has_last_subtitle[signal_num]) {
654 lua_pushstring(L, input_state_info->last_subtitle[signal_num].c_str());
659 int Effect_set_float(lua_State *L)
661 assert(lua_gettop(L) == 3);
662 Effect *effect = (Effect *)get_effect(L, 1);
663 string key = checkstdstring(L, 2);
664 float value = luaL_checknumber(L, 3);
665 if (!effect->set_float(key, value)) {
666 luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
671 int Effect_set_int(lua_State *L)
673 assert(lua_gettop(L) == 3);
674 Effect *effect = (Effect *)get_effect(L, 1);
675 string key = checkstdstring(L, 2);
676 float value = luaL_checknumber(L, 3);
677 if (!effect->set_int(key, value)) {
678 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
683 int Effect_set_vec3(lua_State *L)
685 assert(lua_gettop(L) == 5);
686 Effect *effect = (Effect *)get_effect(L, 1);
687 string key = checkstdstring(L, 2);
689 v[0] = luaL_checknumber(L, 3);
690 v[1] = luaL_checknumber(L, 4);
691 v[2] = luaL_checknumber(L, 5);
692 if (!effect->set_vec3(key, v)) {
693 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
699 int Effect_set_vec4(lua_State *L)
701 assert(lua_gettop(L) == 6);
702 Effect *effect = (Effect *)get_effect(L, 1);
703 string key = checkstdstring(L, 2);
705 v[0] = luaL_checknumber(L, 3);
706 v[1] = luaL_checknumber(L, 4);
707 v[2] = luaL_checknumber(L, 5);
708 v[3] = luaL_checknumber(L, 6);
709 if (!effect->set_vec4(key, v)) {
710 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
711 v[0], v[1], v[2], v[3]);
716 const luaL_Reg EffectChain_funcs[] = {
717 { "new", EffectChain_new },
718 { "__gc", EffectChain_gc },
719 { "add_live_input", EffectChain_add_live_input },
720 { "add_video_input", EffectChain_add_video_input },
722 { "add_html_input", EffectChain_add_html_input },
724 { "add_effect", EffectChain_add_effect },
725 { "finalize", EffectChain_finalize },
729 const luaL_Reg LiveInputWrapper_funcs[] = {
730 { "connect_signal", LiveInputWrapper_connect_signal },
734 const luaL_Reg ImageInput_funcs[] = {
735 { "new", ImageInput_new },
736 { "set_float", Effect_set_float },
737 { "set_int", Effect_set_int },
738 { "set_vec3", Effect_set_vec3 },
739 { "set_vec4", Effect_set_vec4 },
743 const luaL_Reg VideoInput_funcs[] = {
744 { "new", VideoInput_new },
745 { "rewind", VideoInput_rewind },
746 { "disconnect", VideoInput_disconnect },
747 { "change_rate", VideoInput_change_rate },
748 { "get_signal_num", VideoInput_get_signal_num },
752 const luaL_Reg HTMLInput_funcs[] = {
753 { "new", HTMLInput_new },
755 { "set_url", HTMLInput_set_url },
756 { "reload", HTMLInput_reload },
757 { "set_max_fps", HTMLInput_set_max_fps },
758 { "execute_javascript_async", HTMLInput_execute_javascript_async },
759 { "resize", HTMLInput_resize },
760 { "get_signal_num", HTMLInput_get_signal_num },
765 const luaL_Reg WhiteBalanceEffect_funcs[] = {
766 { "new", WhiteBalanceEffect_new },
767 { "set_float", Effect_set_float },
768 { "set_int", Effect_set_int },
769 { "set_vec3", Effect_set_vec3 },
770 { "set_vec4", Effect_set_vec4 },
774 const luaL_Reg ResampleEffect_funcs[] = {
775 { "new", ResampleEffect_new },
776 { "set_float", Effect_set_float },
777 { "set_int", Effect_set_int },
778 { "set_vec3", Effect_set_vec3 },
779 { "set_vec4", Effect_set_vec4 },
783 const luaL_Reg PaddingEffect_funcs[] = {
784 { "new", PaddingEffect_new },
785 { "set_float", Effect_set_float },
786 { "set_int", Effect_set_int },
787 { "set_vec3", Effect_set_vec3 },
788 { "set_vec4", Effect_set_vec4 },
792 const luaL_Reg IntegralPaddingEffect_funcs[] = {
793 { "new", IntegralPaddingEffect_new },
794 { "set_float", Effect_set_float },
795 { "set_int", Effect_set_int },
796 { "set_vec3", Effect_set_vec3 },
797 { "set_vec4", Effect_set_vec4 },
801 const luaL_Reg OverlayEffect_funcs[] = {
802 { "new", OverlayEffect_new },
803 { "set_float", Effect_set_float },
804 { "set_int", Effect_set_int },
805 { "set_vec3", Effect_set_vec3 },
806 { "set_vec4", Effect_set_vec4 },
810 const luaL_Reg ResizeEffect_funcs[] = {
811 { "new", ResizeEffect_new },
812 { "set_float", Effect_set_float },
813 { "set_int", Effect_set_int },
814 { "set_vec3", Effect_set_vec3 },
815 { "set_vec4", Effect_set_vec4 },
819 const luaL_Reg MultiplyEffect_funcs[] = {
820 { "new", MultiplyEffect_new },
821 { "set_float", Effect_set_float },
822 { "set_int", Effect_set_int },
823 { "set_vec3", Effect_set_vec3 },
824 { "set_vec4", Effect_set_vec4 },
828 const luaL_Reg MixEffect_funcs[] = {
829 { "new", MixEffect_new },
830 { "set_float", Effect_set_float },
831 { "set_int", Effect_set_int },
832 { "set_vec3", Effect_set_vec3 },
833 { "set_vec4", Effect_set_vec4 },
837 const luaL_Reg LiftGammaGainEffect_funcs[] = {
838 { "new", LiftGammaGainEffect_new },
839 { "set_float", Effect_set_float },
840 { "set_int", Effect_set_int },
841 { "set_vec3", Effect_set_vec3 },
842 { "set_vec4", Effect_set_vec4 },
846 const luaL_Reg InputStateInfo_funcs[] = {
847 { "get_width", InputStateInfo_get_width },
848 { "get_height", InputStateInfo_get_height },
849 { "get_interlaced", InputStateInfo_get_interlaced },
850 { "get_has_signal", InputStateInfo_get_has_signal },
851 { "get_is_connected", InputStateInfo_get_is_connected },
852 { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
853 { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
854 { "get_last_subtitle", InputStateInfo_get_last_subtitle },
858 const luaL_Reg ThemeMenu_funcs[] = {
859 { "set", ThemeMenu_set },
865 LiveInputWrapper::LiveInputWrapper(
868 bmusb::PixelFormat pixel_format,
869 bool override_bounce,
871 bool user_connectable)
873 pixel_format(pixel_format),
874 deinterlace(deinterlace),
875 user_connectable(user_connectable)
877 ImageFormat inout_format;
878 inout_format.color_space = COLORSPACE_sRGB;
880 // Gamma curve depends on the input signal, and we don't really get any
881 // indications. A camera would be expected to do Rec. 709, but
882 // I haven't checked if any do in practice. However, computers _do_ output
883 // in sRGB gamma (ie., they don't convert from sRGB to Rec. 709), and
884 // I wouldn't really be surprised if most non-professional cameras do, too.
885 // So we pick sRGB as the least evil here.
886 inout_format.gamma_curve = GAMMA_sRGB;
890 deinterlace_effect = new movit::DeinterlaceEffect();
892 // As per the comments in deinterlace_effect.h, we turn this off.
893 // The most likely interlaced input for us is either a camera
894 // (where it's fine to turn it off) or a laptop (where it _should_
896 CHECK(deinterlace_effect->set_int("enable_spatial_interlacing_check", 0));
898 num_inputs = deinterlace_effect->num_inputs();
899 assert(num_inputs == FRAME_HISTORY_LENGTH);
904 if (pixel_format == bmusb::PixelFormat_8BitBGRA) {
905 for (unsigned i = 0; i < num_inputs; ++i) {
906 // We upload our textures ourselves, and Movit swaps
907 // R and B in the shader if we specify BGRA, so lie and say RGBA.
908 rgba_inputs.push_back(new sRGBSwitchingFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
909 chain->add_input(rgba_inputs.back());
913 vector<Effect *> reverse_inputs(rgba_inputs.rbegin(), rgba_inputs.rend());
914 chain->add_effect(deinterlace_effect, reverse_inputs);
917 assert(pixel_format == bmusb::PixelFormat_8BitYCbCr ||
918 pixel_format == bmusb::PixelFormat_10BitYCbCr ||
919 pixel_format == bmusb::PixelFormat_8BitYCbCrPlanar);
921 // Most of these settings will be overridden later if using PixelFormat_8BitYCbCrPlanar.
922 input_ycbcr_format.chroma_subsampling_x = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1 : 2;
923 input_ycbcr_format.chroma_subsampling_y = 1;
924 input_ycbcr_format.num_levels = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1024 : 256;
925 input_ycbcr_format.cb_x_position = 0.0;
926 input_ycbcr_format.cr_x_position = 0.0;
927 input_ycbcr_format.cb_y_position = 0.5;
928 input_ycbcr_format.cr_y_position = 0.5;
929 input_ycbcr_format.luma_coefficients = YCBCR_REC_709; // Will be overridden later even if not planar.
930 input_ycbcr_format.full_range = false; // Will be overridden later even if not planar.
932 for (unsigned i = 0; i < num_inputs; ++i) {
933 // When using 10-bit input, we're converting to interleaved through v210Converter.
934 YCbCrInputSplitting splitting;
935 if (pixel_format == bmusb::PixelFormat_10BitYCbCr) {
936 splitting = YCBCR_INPUT_INTERLEAVED;
937 } else if (pixel_format == bmusb::PixelFormat_8BitYCbCr) {
938 splitting = YCBCR_INPUT_SPLIT_Y_AND_CBCR;
940 splitting = YCBCR_INPUT_PLANAR;
942 if (override_bounce) {
943 ycbcr_inputs.push_back(new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
945 ycbcr_inputs.push_back(new YCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
947 chain->add_input(ycbcr_inputs.back());
951 vector<Effect *> reverse_inputs(ycbcr_inputs.rbegin(), ycbcr_inputs.rend());
952 chain->add_effect(deinterlace_effect, reverse_inputs);
957 bool LiveInputWrapper::connect_signal(int signal_num)
959 if (!user_connectable) {
963 if (global_mixer == nullptr) {
968 signal_num = theme->map_signal(signal_num);
969 connect_signal_raw(signal_num, *theme->input_state);
973 void LiveInputWrapper::connect_signal_raw(int signal_num, const InputState &input_state)
975 BufferedFrame first_frame = input_state.buffered_frames[signal_num][0];
976 if (first_frame.frame == nullptr) {
980 unsigned width, height;
982 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)first_frame.frame->userdata;
983 width = userdata->last_width[first_frame.field_number];
984 height = userdata->last_height[first_frame.field_number];
985 if (userdata->last_interlaced) {
990 movit::YCbCrLumaCoefficients ycbcr_coefficients = input_state.ycbcr_coefficients[signal_num];
991 bool full_range = input_state.full_range[signal_num];
993 if (input_state.ycbcr_coefficients_auto[signal_num]) {
996 // The Blackmagic driver docs claim that the device outputs Y'CbCr
997 // according to Rec. 601, but this seems to indicate the subsampling
998 // positions only, as they publish Y'CbCr → RGB formulas that are
999 // different for HD and SD (corresponding to Rec. 709 and 601, respectively),
1000 // and a Lenovo X1 gen 3 I used to test definitely outputs Rec. 709
1001 // (at least up to rounding error). Other devices seem to use Rec. 601
1002 // even on HD resolutions. Nevertheless, Rec. 709 _is_ the right choice
1003 // for HD, so we default to that if the user hasn't set anything.
1004 if (height >= 720) {
1005 ycbcr_coefficients = YCBCR_REC_709;
1007 ycbcr_coefficients = YCBCR_REC_601;
1011 // This is a global, but it doesn't really matter.
1012 input_ycbcr_format.luma_coefficients = ycbcr_coefficients;
1013 input_ycbcr_format.full_range = full_range;
1015 BufferedFrame last_good_frame = first_frame;
1016 for (unsigned i = 0; i < max(ycbcr_inputs.size(), rgba_inputs.size()); ++i) {
1017 BufferedFrame frame = input_state.buffered_frames[signal_num][i];
1018 if (frame.frame == nullptr) {
1019 // Not enough data; reuse last frame (well, field).
1020 // This is suboptimal, but we have nothing better.
1021 frame = last_good_frame;
1023 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
1025 unsigned this_width = userdata->last_width[frame.field_number];
1026 unsigned this_height = userdata->last_height[frame.field_number];
1027 if (this_width != width || this_height != height) {
1028 // Resolution changed; reuse last frame/field.
1029 frame = last_good_frame;
1030 userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
1033 assert(userdata->pixel_format == pixel_format);
1034 switch (pixel_format) {
1035 case bmusb::PixelFormat_8BitYCbCr:
1036 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
1037 ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cbcr[frame.field_number]);
1038 ycbcr_inputs[i]->change_ycbcr_format(input_ycbcr_format);
1039 ycbcr_inputs[i]->set_width(width);
1040 ycbcr_inputs[i]->set_height(height);
1042 case bmusb::PixelFormat_8BitYCbCrPlanar:
1043 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
1044 ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cb[frame.field_number]);
1045 ycbcr_inputs[i]->set_texture_num(2, userdata->tex_cr[frame.field_number]);
1046 ycbcr_inputs[i]->change_ycbcr_format(userdata->ycbcr_format);
1047 ycbcr_inputs[i]->set_width(width);
1048 ycbcr_inputs[i]->set_height(height);
1050 case bmusb::PixelFormat_10BitYCbCr:
1051 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_444[frame.field_number]);
1052 ycbcr_inputs[i]->change_ycbcr_format(input_ycbcr_format);
1053 ycbcr_inputs[i]->set_width(width);
1054 ycbcr_inputs[i]->set_height(height);
1056 case bmusb::PixelFormat_8BitBGRA:
1057 rgba_inputs[i]->set_texture_num(userdata->tex_rgba[frame.field_number]);
1058 rgba_inputs[i]->set_width(width);
1059 rgba_inputs[i]->set_height(height);
1065 last_good_frame = frame;
1069 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
1070 CHECK(deinterlace_effect->set_int("current_field_position", frame.field_number));
1076 int call_num_channels(lua_State *L)
1078 lua_getglobal(L, "num_channels");
1080 if (lua_pcall(L, 0, 1, 0) != 0) {
1081 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
1085 int num_channels = luaL_checknumber(L, 1);
1087 assert(lua_gettop(L) == 0);
1088 return num_channels;
1093 Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
1094 : resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
1096 L = luaL_newstate();
1099 // Search through all directories until we find a file that will load
1100 // (as in, does not return LUA_ERRFILE); then run it. We store load errors
1101 // from all the attempts, and show them once we know we can't find any of them.
1103 vector<string> errors;
1104 bool success = false;
1106 vector<string> real_search_dirs;
1107 if (!filename.empty() && filename[0] == '/') {
1108 real_search_dirs.push_back("");
1110 real_search_dirs = search_dirs;
1115 for (const string &dir : real_search_dirs) {
1119 path = dir + "/" + filename;
1121 int err = luaL_loadfile(L, path.c_str());
1123 // Save the theme for when we're actually going to run it
1124 // (we need to set up the right environment below first,
1125 // and we couldn't do that before, because we didn't know the
1126 // path to put in Nageru.THEME_PATH).
1127 theme_code_ref = luaL_ref(L, LUA_REGISTRYINDEX);
1128 assert(lua_gettop(L) == 0);
1133 errors.push_back(lua_tostring(L, -1));
1135 if (err != LUA_ERRFILE) {
1136 // The file actually loaded, but failed to parse somehow. Abort; don't try the next one.
1142 for (const string &error : errors) {
1143 fprintf(stderr, "%s\n", error.c_str());
1147 assert(lua_gettop(L) == 0);
1149 // Make sure the path exposed to the theme (as Nageru.THEME_PATH;
1150 // can be useful for locating files when talking to CEF) is absolute.
1151 // In a sense, it would be nice if realpath() had a mode not to
1152 // resolve symlinks, but it doesn't, so we only call it if we don't
1153 // already have an absolute path (which may leave ../ elements etc.).
1154 if (path[0] == '/') {
1157 char *absolute_theme_path = realpath(path.c_str(), nullptr);
1158 theme_path = absolute_theme_path;
1159 free(absolute_theme_path);
1162 // Set up the API we provide.
1163 register_constants();
1164 register_class("EffectChain", EffectChain_funcs);
1165 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
1166 register_class("ImageInput", ImageInput_funcs);
1167 register_class("VideoInput", VideoInput_funcs);
1168 register_class("HTMLInput", HTMLInput_funcs);
1169 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
1170 register_class("ResampleEffect", ResampleEffect_funcs);
1171 register_class("PaddingEffect", PaddingEffect_funcs);
1172 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
1173 register_class("OverlayEffect", OverlayEffect_funcs);
1174 register_class("ResizeEffect", ResizeEffect_funcs);
1175 register_class("MultiplyEffect", MultiplyEffect_funcs);
1176 register_class("MixEffect", MixEffect_funcs);
1177 register_class("LiftGammaGainEffect", LiftGammaGainEffect_funcs);
1178 register_class("InputStateInfo", InputStateInfo_funcs);
1179 register_class("ThemeMenu", ThemeMenu_funcs);
1181 // Now actually run the theme to get everything set up.
1182 lua_rawgeti(L, LUA_REGISTRYINDEX, theme_code_ref);
1183 luaL_unref(L, LUA_REGISTRYINDEX, theme_code_ref);
1184 if (lua_pcall(L, 0, 0, 0)) {
1185 fprintf(stderr, "Error when running %s: %s\n", path.c_str(), lua_tostring(L, -1));
1188 assert(lua_gettop(L) == 0);
1190 // Ask it for the number of channels.
1191 num_channels = call_num_channels(L);
1199 void Theme::register_constants()
1201 // Set Nageru.VIDEO_FORMAT_BGRA = bmusb::PixelFormat_8BitBGRA, etc.
1202 const vector<pair<string, int>> num_constants = {
1203 { "VIDEO_FORMAT_BGRA", bmusb::PixelFormat_8BitBGRA },
1204 { "VIDEO_FORMAT_YCBCR", bmusb::PixelFormat_8BitYCbCrPlanar },
1206 const vector<pair<string, string>> str_constants = {
1207 { "THEME_PATH", theme_path },
1210 lua_newtable(L); // t = {}
1212 for (const pair<string, int> &constant : num_constants) {
1213 lua_pushstring(L, constant.first.c_str());
1214 lua_pushinteger(L, constant.second);
1215 lua_settable(L, 1); // t[key] = value
1217 for (const pair<string, string> &constant : str_constants) {
1218 lua_pushstring(L, constant.first.c_str());
1219 lua_pushstring(L, constant.second.c_str());
1220 lua_settable(L, 1); // t[key] = value
1223 lua_setglobal(L, "Nageru"); // Nageru = t
1224 assert(lua_gettop(L) == 0);
1227 void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
1229 assert(lua_gettop(L) == 0);
1230 luaL_newmetatable(L, class_name); // mt = {}
1231 lua_pushlightuserdata(L, this);
1232 luaL_setfuncs(L, funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
1233 lua_pushvalue(L, -1);
1234 lua_setfield(L, -2, "__index"); // mt.__index = mt
1235 lua_setglobal(L, class_name); // ClassName = mt
1236 assert(lua_gettop(L) == 0);
1239 Theme::Chain Theme::get_chain(unsigned num, float t, unsigned width, unsigned height, const InputState &input_state)
1243 lock_guard<mutex> lock(m);
1244 assert(lua_gettop(L) == 0);
1245 lua_getglobal(L, "get_chain"); /* function to be called */
1246 lua_pushnumber(L, num);
1247 lua_pushnumber(L, t);
1248 lua_pushnumber(L, width);
1249 lua_pushnumber(L, height);
1250 wrap_lua_object<InputStateInfo>(L, "InputStateInfo", input_state);
1252 if (lua_pcall(L, 5, 2, 0) != 0) {
1253 fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
1257 EffectChain *effect_chain = (EffectChain *)luaL_testudata(L, -2, "EffectChain");
1258 if (effect_chain == nullptr) {
1259 fprintf(stderr, "get_chain() for chain number %d did not return an EffectChain\n",
1263 chain.chain = effect_chain;
1264 if (!lua_isfunction(L, -1)) {
1265 fprintf(stderr, "Argument #-1 should be a function\n");
1268 lua_pushvalue(L, -1);
1269 shared_ptr<LuaRefWithDeleter> funcref(new LuaRefWithDeleter(&m, L, luaL_ref(L, LUA_REGISTRYINDEX)));
1271 assert(lua_gettop(L) == 0);
1273 chain.setup_chain = [this, funcref, input_state, effect_chain]{
1274 lock_guard<mutex> lock(m);
1276 assert(this->input_state == nullptr);
1277 this->input_state = &input_state;
1279 // Set up state, including connecting signals.
1280 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref->get());
1281 if (lua_pcall(L, 0, 0, 0) != 0) {
1282 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
1285 assert(lua_gettop(L) == 0);
1287 // The theme can't (or at least shouldn't!) call connect_signal() on
1288 // each FFmpeg or CEF input, so we'll do it here.
1289 if (video_signal_connections.count(effect_chain)) {
1290 for (const VideoSignalConnection &conn : video_signal_connections[effect_chain]) {
1291 conn.wrapper->connect_signal_raw(conn.source->get_card_index(), input_state);
1295 if (html_signal_connections.count(effect_chain)) {
1296 for (const CEFSignalConnection &conn : html_signal_connections[effect_chain]) {
1297 conn.wrapper->connect_signal_raw(conn.source->get_card_index(), input_state);
1302 this->input_state = nullptr;
1305 // TODO: Can we do better, e.g. by running setup_chain() and seeing what it references?
1306 // Actually, setup_chain does maybe hold all the references we need now anyway?
1307 chain.input_frames.reserve(num_cards * FRAME_HISTORY_LENGTH);
1308 for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
1309 for (unsigned frame_num = 0; frame_num < FRAME_HISTORY_LENGTH; ++frame_num) {
1310 chain.input_frames.push_back(input_state.buffered_frames[card_index][frame_num].frame);
1317 string Theme::get_channel_name(unsigned channel)
1319 lock_guard<mutex> lock(m);
1320 lua_getglobal(L, "channel_name");
1321 lua_pushnumber(L, channel);
1322 if (lua_pcall(L, 1, 1, 0) != 0) {
1323 fprintf(stderr, "error running function `channel_name': %s\n", lua_tostring(L, -1));
1326 const char *ret = lua_tostring(L, -1);
1327 if (ret == nullptr) {
1328 fprintf(stderr, "function `channel_name' returned nil for channel %d\n", channel);
1332 string retstr = ret;
1334 assert(lua_gettop(L) == 0);
1338 int Theme::get_channel_signal(unsigned channel)
1340 lock_guard<mutex> lock(m);
1341 lua_getglobal(L, "channel_signal");
1342 lua_pushnumber(L, channel);
1343 if (lua_pcall(L, 1, 1, 0) != 0) {
1344 fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
1348 int ret = luaL_checknumber(L, 1);
1350 assert(lua_gettop(L) == 0);
1354 std::string Theme::get_channel_color(unsigned channel)
1356 lock_guard<mutex> lock(m);
1357 lua_getglobal(L, "channel_color");
1358 lua_pushnumber(L, channel);
1359 if (lua_pcall(L, 1, 1, 0) != 0) {
1360 fprintf(stderr, "error running function `channel_color': %s\n", lua_tostring(L, -1));
1364 const char *ret = lua_tostring(L, -1);
1365 if (ret == nullptr) {
1366 fprintf(stderr, "function `channel_color' returned nil for channel %d\n", channel);
1370 string retstr = ret;
1372 assert(lua_gettop(L) == 0);
1376 bool Theme::get_supports_set_wb(unsigned channel)
1378 lock_guard<mutex> lock(m);
1379 lua_getglobal(L, "supports_set_wb");
1380 lua_pushnumber(L, channel);
1381 if (lua_pcall(L, 1, 1, 0) != 0) {
1382 fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
1386 bool ret = checkbool(L, -1);
1388 assert(lua_gettop(L) == 0);
1392 void Theme::set_wb(unsigned channel, double r, double g, double b)
1394 lock_guard<mutex> lock(m);
1395 lua_getglobal(L, "set_wb");
1396 lua_pushnumber(L, channel);
1397 lua_pushnumber(L, r);
1398 lua_pushnumber(L, g);
1399 lua_pushnumber(L, b);
1400 if (lua_pcall(L, 4, 0, 0) != 0) {
1401 fprintf(stderr, "error running function `set_wb': %s\n", lua_tostring(L, -1));
1405 assert(lua_gettop(L) == 0);
1408 vector<string> Theme::get_transition_names(float t)
1410 lock_guard<mutex> lock(m);
1411 lua_getglobal(L, "get_transitions");
1412 lua_pushnumber(L, t);
1413 if (lua_pcall(L, 1, 1, 0) != 0) {
1414 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
1420 while (lua_next(L, -2) != 0) {
1421 ret.push_back(lua_tostring(L, -1));
1425 assert(lua_gettop(L) == 0);
1429 int Theme::map_signal(int signal_num)
1431 // Negative numbers map to raw signals.
1432 if (signal_num < 0) {
1433 return -1 - signal_num;
1436 lock_guard<mutex> lock(map_m);
1437 if (signal_to_card_mapping.count(signal_num)) {
1438 return signal_to_card_mapping[signal_num];
1442 if (global_flags.output_card != -1 && num_cards > 1) {
1443 // Try to exclude the output card from the default card_index.
1444 card_index = signal_num % (num_cards - 1);
1445 if (card_index >= global_flags.output_card) {
1448 if (signal_num >= int(num_cards - 1)) {
1449 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u input card(s) (card %d is busy with output).\n",
1450 signal_num, num_cards - 1, global_flags.output_card);
1451 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1454 card_index = signal_num % num_cards;
1455 if (signal_num >= int(num_cards)) {
1456 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u card(s).\n", signal_num, num_cards);
1457 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1460 signal_to_card_mapping[signal_num] = card_index;
1464 void Theme::set_signal_mapping(int signal_num, int card_num)
1466 lock_guard<mutex> lock(map_m);
1467 assert(card_num < int(num_cards));
1468 signal_to_card_mapping[signal_num] = card_num;
1471 void Theme::transition_clicked(int transition_num, float t)
1473 lock_guard<mutex> lock(m);
1474 lua_getglobal(L, "transition_clicked");
1475 lua_pushnumber(L, transition_num);
1476 lua_pushnumber(L, t);
1478 if (lua_pcall(L, 2, 0, 0) != 0) {
1479 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
1482 assert(lua_gettop(L) == 0);
1485 void Theme::channel_clicked(int preview_num)
1487 lock_guard<mutex> lock(m);
1488 lua_getglobal(L, "channel_clicked");
1489 lua_pushnumber(L, preview_num);
1491 if (lua_pcall(L, 1, 0, 0) != 0) {
1492 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));
1495 assert(lua_gettop(L) == 0);
1498 int Theme::set_theme_menu(lua_State *L)
1500 for (const Theme::MenuEntry &entry : theme_menu) {
1501 luaL_unref(L, LUA_REGISTRYINDEX, entry.lua_ref);
1505 int num_elements = lua_gettop(L);
1506 for (int i = 1; i <= num_elements; ++i) {
1507 lua_rawgeti(L, i, 1);
1508 const string text = checkstdstring(L, -1);
1511 lua_rawgeti(L, i, 2);
1512 luaL_checktype(L, -1, LUA_TFUNCTION);
1513 int ref = luaL_ref(L, LUA_REGISTRYINDEX);
1515 theme_menu.push_back(MenuEntry{ text, ref });
1517 lua_pop(L, num_elements);
1518 assert(lua_gettop(L) == 0);
1520 if (theme_menu_callback != nullptr) {
1521 theme_menu_callback();
1527 void Theme::theme_menu_entry_clicked(int lua_ref)
1529 lock_guard<mutex> lock(m);
1530 lua_rawgeti(L, LUA_REGISTRYINDEX, lua_ref);
1531 if (lua_pcall(L, 0, 0, 0) != 0) {
1532 fprintf(stderr, "error running menu callback: %s\n", lua_tostring(L, -1));