4 #include <bmusb/bmusb.h>
8 #include <movit/effect.h>
9 #include <movit/effect_chain.h>
10 #include <movit/image_format.h>
11 #include <movit/mix_effect.h>
12 #include <movit/multiply_effect.h>
13 #include <movit/overlay_effect.h>
14 #include <movit/padding_effect.h>
15 #include <movit/resample_effect.h>
16 #include <movit/resize_effect.h>
17 #include <movit/util.h>
18 #include <movit/white_balance_effect.h>
19 #include <movit/ycbcr.h>
20 #include <movit/ycbcr_input.h>
29 #include "deinterlace_effect.h"
31 #include "image_input.h"
33 #include "input_state.h"
34 #include "pbo_frame_allocator.h"
43 using namespace movit;
45 extern Mixer *global_mixer;
49 // Contains basically the same data as InputState, but does not hold on to
50 // a reference to the frames. This is important so that we can release them
51 // without having to wait for Lua's GC.
52 struct InputStateInfo {
53 InputStateInfo(const InputState& input_state);
55 unsigned last_width[MAX_VIDEO_CARDS], last_height[MAX_VIDEO_CARDS];
56 bool last_interlaced[MAX_VIDEO_CARDS], last_has_signal[MAX_VIDEO_CARDS], last_is_connected[MAX_VIDEO_CARDS];
57 unsigned last_frame_rate_nom[MAX_VIDEO_CARDS], last_frame_rate_den[MAX_VIDEO_CARDS];
60 InputStateInfo::InputStateInfo(const InputState &input_state)
62 for (unsigned signal_num = 0; signal_num < MAX_VIDEO_CARDS; ++signal_num) {
63 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
64 if (frame.frame == nullptr) {
65 last_width[signal_num] = last_height[signal_num] = 0;
66 last_interlaced[signal_num] = false;
67 last_has_signal[signal_num] = false;
68 last_is_connected[signal_num] = false;
71 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
72 last_width[signal_num] = userdata->last_width[frame.field_number];
73 last_height[signal_num] = userdata->last_height[frame.field_number];
74 last_interlaced[signal_num] = userdata->last_interlaced;
75 last_has_signal[signal_num] = userdata->last_has_signal;
76 last_is_connected[signal_num] = userdata->last_is_connected;
77 last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
78 last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
82 class LuaRefWithDeleter {
84 LuaRefWithDeleter(mutex *m, lua_State *L, int ref) : m(m), L(L), ref(ref) {}
85 ~LuaRefWithDeleter() {
86 unique_lock<mutex> lock(*m);
87 luaL_unref(L, LUA_REGISTRYINDEX, ref);
89 int get() const { return ref; }
92 LuaRefWithDeleter(const LuaRefWithDeleter &) = delete;
99 template<class T, class... Args>
100 int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
102 // Construct the C++ object and put it on the stack.
103 void *mem = lua_newuserdata(L, sizeof(T));
104 new(mem) T(forward<Args>(args)...);
106 // Look up the metatable named <class_name>, and set it on the new object.
107 luaL_getmetatable(L, class_name);
108 lua_setmetatable(L, -2);
113 // Like wrap_lua_object, but the object is not owned by Lua; ie. it's not freed
114 // by Lua GC. This is typically the case for Effects, which are owned by EffectChain
115 // and expected to be destructed by it. The object will be of type T** instead of T*
116 // when exposed to Lua.
118 // Note that we currently leak if you allocate an Effect in this way and never call
119 // add_effect. We should see if there's a way to e.g. set __gc on it at construction time
120 // and then release that once add_effect() takes ownership.
121 template<class T, class... Args>
122 int wrap_lua_object_nonowned(lua_State* L, const char *class_name, Args&&... args)
124 // Construct the pointer ot the C++ object and put it on the stack.
125 T **obj = (T **)lua_newuserdata(L, sizeof(T *));
126 *obj = new T(forward<Args>(args)...);
128 // Look up the metatable named <class_name>, and set it on the new object.
129 luaL_getmetatable(L, class_name);
130 lua_setmetatable(L, -2);
135 Theme *get_theme_updata(lua_State* L)
137 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
138 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
141 Effect *get_effect(lua_State *L, int idx)
143 if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
144 luaL_testudata(L, idx, "ResampleEffect") ||
145 luaL_testudata(L, idx, "PaddingEffect") ||
146 luaL_testudata(L, idx, "IntegralPaddingEffect") ||
147 luaL_testudata(L, idx, "OverlayEffect") ||
148 luaL_testudata(L, idx, "ResizeEffect") ||
149 luaL_testudata(L, idx, "MultiplyEffect") ||
150 luaL_testudata(L, idx, "MixEffect") ||
151 luaL_testudata(L, idx, "ImageInput")) {
152 return *(Effect **)lua_touserdata(L, idx);
154 luaL_error(L, "Error: Index #%d was not an Effect type\n", idx);
158 InputStateInfo *get_input_state_info(lua_State *L, int idx)
160 if (luaL_testudata(L, idx, "InputStateInfo")) {
161 return (InputStateInfo *)lua_touserdata(L, idx);
163 luaL_error(L, "Error: Index #%d was not InputStateInfo\n", idx);
167 bool checkbool(lua_State* L, int idx)
169 luaL_checktype(L, idx, LUA_TBOOLEAN);
170 return lua_toboolean(L, idx);
173 string checkstdstring(lua_State *L, int index)
176 const char* cstr = lua_tolstring(L, index, &len);
177 return string(cstr, len);
180 int EffectChain_new(lua_State* L)
182 assert(lua_gettop(L) == 2);
183 Theme *theme = get_theme_updata(L);
184 int aspect_w = luaL_checknumber(L, 1);
185 int aspect_h = luaL_checknumber(L, 2);
187 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h, theme->get_resource_pool());
190 int EffectChain_gc(lua_State* L)
192 assert(lua_gettop(L) == 1);
193 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
194 chain->~EffectChain();
198 int EffectChain_add_live_input(lua_State* L)
200 assert(lua_gettop(L) == 3);
201 Theme *theme = get_theme_updata(L);
202 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
203 bool override_bounce = checkbool(L, 2);
204 bool deinterlace = checkbool(L, 3);
205 bmusb::PixelFormat pixel_format = global_flags.ten_bit_input ? bmusb::PixelFormat_10BitYCbCr : bmusb::PixelFormat_8BitYCbCr;
206 return wrap_lua_object<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, pixel_format, override_bounce, deinterlace);
209 int EffectChain_add_effect(lua_State* L)
211 assert(lua_gettop(L) >= 2);
212 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
214 // TODO: Better error reporting.
215 Effect *effect = get_effect(L, 2);
216 if (lua_gettop(L) == 2) {
217 if (effect->num_inputs() == 0) {
218 chain->add_input((Input *)effect);
220 chain->add_effect(effect);
223 vector<Effect *> inputs;
224 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
225 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
226 LiveInputWrapper *input = (LiveInputWrapper *)lua_touserdata(L, idx);
227 inputs.push_back(input->get_effect());
229 inputs.push_back(get_effect(L, idx));
232 chain->add_effect(effect, inputs);
235 lua_settop(L, 2); // Return the effect itself.
237 // Make sure Lua doesn't garbage-collect it away.
238 lua_pushvalue(L, -1);
239 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
244 int EffectChain_finalize(lua_State* L)
246 assert(lua_gettop(L) == 2);
247 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
248 bool is_main_chain = checkbool(L, 2);
250 // Add outputs as needed.
251 // NOTE: If you change any details about the output format, you will need to
252 // also update what's given to the muxer (HTTPD::Mux constructor) and
253 // what's put in the H.264 stream (sps_rbsp()).
254 ImageFormat inout_format;
255 inout_format.color_space = COLORSPACE_REC_709;
257 // Output gamma is tricky. We should output Rec. 709 for TV, except that
258 // we expect to run with web players and others that don't really care and
259 // just output with no conversion. So that means we'll need to output sRGB,
260 // even though H.264 has no setting for that (we use “unspecified”).
261 inout_format.gamma_curve = GAMMA_sRGB;
264 YCbCrFormat output_ycbcr_format;
265 // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
266 // happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
267 output_ycbcr_format.chroma_subsampling_x = 1;
268 output_ycbcr_format.chroma_subsampling_y = 1;
270 // This will be overridden if HDMI/SDI output is in force.
271 if (global_flags.ycbcr_rec709_coefficients) {
272 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
274 output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
277 output_ycbcr_format.full_range = false;
278 output_ycbcr_format.num_levels = 1 << global_flags.x264_bit_depth;
280 GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
282 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR, type);
284 // If we're using zerocopy video encoding (so the destination
285 // Y texture is owned by VA-API and will be unavailable for
286 // display), add a copy, where we'll only be using the Y component.
287 if (global_flags.use_zerocopy) {
288 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.
290 chain->set_dither_bits(global_flags.x264_bit_depth > 8 ? 16 : 8);
291 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
293 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
300 int LiveInputWrapper_connect_signal(lua_State* L)
302 assert(lua_gettop(L) == 2);
303 LiveInputWrapper *input = (LiveInputWrapper *)luaL_checkudata(L, 1, "LiveInputWrapper");
304 int signal_num = luaL_checknumber(L, 2);
305 input->connect_signal(signal_num);
309 int ImageInput_new(lua_State* L)
311 assert(lua_gettop(L) == 1);
312 string filename = checkstdstring(L, 1);
313 return wrap_lua_object_nonowned<ImageInput>(L, "ImageInput", filename);
316 int WhiteBalanceEffect_new(lua_State* L)
318 assert(lua_gettop(L) == 0);
319 return wrap_lua_object_nonowned<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
322 int ResampleEffect_new(lua_State* L)
324 assert(lua_gettop(L) == 0);
325 return wrap_lua_object_nonowned<ResampleEffect>(L, "ResampleEffect");
328 int PaddingEffect_new(lua_State* L)
330 assert(lua_gettop(L) == 0);
331 return wrap_lua_object_nonowned<PaddingEffect>(L, "PaddingEffect");
334 int IntegralPaddingEffect_new(lua_State* L)
336 assert(lua_gettop(L) == 0);
337 return wrap_lua_object_nonowned<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
340 int OverlayEffect_new(lua_State* L)
342 assert(lua_gettop(L) == 0);
343 return wrap_lua_object_nonowned<OverlayEffect>(L, "OverlayEffect");
346 int ResizeEffect_new(lua_State* L)
348 assert(lua_gettop(L) == 0);
349 return wrap_lua_object_nonowned<ResizeEffect>(L, "ResizeEffect");
352 int MultiplyEffect_new(lua_State* L)
354 assert(lua_gettop(L) == 0);
355 return wrap_lua_object_nonowned<MultiplyEffect>(L, "MultiplyEffect");
358 int MixEffect_new(lua_State* L)
360 assert(lua_gettop(L) == 0);
361 return wrap_lua_object_nonowned<MixEffect>(L, "MixEffect");
364 int InputStateInfo_get_width(lua_State* L)
366 assert(lua_gettop(L) == 2);
367 InputStateInfo *input_state_info = get_input_state_info(L, 1);
368 Theme *theme = get_theme_updata(L);
369 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
370 lua_pushnumber(L, input_state_info->last_width[signal_num]);
374 int InputStateInfo_get_height(lua_State* L)
376 assert(lua_gettop(L) == 2);
377 InputStateInfo *input_state_info = get_input_state_info(L, 1);
378 Theme *theme = get_theme_updata(L);
379 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
380 lua_pushnumber(L, input_state_info->last_height[signal_num]);
384 int InputStateInfo_get_interlaced(lua_State* L)
386 assert(lua_gettop(L) == 2);
387 InputStateInfo *input_state_info = get_input_state_info(L, 1);
388 Theme *theme = get_theme_updata(L);
389 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
390 lua_pushboolean(L, input_state_info->last_interlaced[signal_num]);
394 int InputStateInfo_get_has_signal(lua_State* L)
396 assert(lua_gettop(L) == 2);
397 InputStateInfo *input_state_info = get_input_state_info(L, 1);
398 Theme *theme = get_theme_updata(L);
399 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
400 lua_pushboolean(L, input_state_info->last_has_signal[signal_num]);
404 int InputStateInfo_get_is_connected(lua_State* L)
406 assert(lua_gettop(L) == 2);
407 InputStateInfo *input_state_info = get_input_state_info(L, 1);
408 Theme *theme = get_theme_updata(L);
409 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
410 lua_pushboolean(L, input_state_info->last_is_connected[signal_num]);
414 int InputStateInfo_get_frame_rate_nom(lua_State* L)
416 assert(lua_gettop(L) == 2);
417 InputStateInfo *input_state_info = get_input_state_info(L, 1);
418 Theme *theme = get_theme_updata(L);
419 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
420 lua_pushnumber(L, input_state_info->last_frame_rate_nom[signal_num]);
424 int InputStateInfo_get_frame_rate_den(lua_State* L)
426 assert(lua_gettop(L) == 2);
427 InputStateInfo *input_state_info = get_input_state_info(L, 1);
428 Theme *theme = get_theme_updata(L);
429 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
430 lua_pushnumber(L, input_state_info->last_frame_rate_den[signal_num]);
434 int Effect_set_float(lua_State *L)
436 assert(lua_gettop(L) == 3);
437 Effect *effect = (Effect *)get_effect(L, 1);
438 string key = checkstdstring(L, 2);
439 float value = luaL_checknumber(L, 3);
440 if (!effect->set_float(key, value)) {
441 luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
446 int Effect_set_int(lua_State *L)
448 assert(lua_gettop(L) == 3);
449 Effect *effect = (Effect *)get_effect(L, 1);
450 string key = checkstdstring(L, 2);
451 float value = luaL_checknumber(L, 3);
452 if (!effect->set_int(key, value)) {
453 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
458 int Effect_set_vec3(lua_State *L)
460 assert(lua_gettop(L) == 5);
461 Effect *effect = (Effect *)get_effect(L, 1);
462 string key = checkstdstring(L, 2);
464 v[0] = luaL_checknumber(L, 3);
465 v[1] = luaL_checknumber(L, 4);
466 v[2] = luaL_checknumber(L, 5);
467 if (!effect->set_vec3(key, v)) {
468 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
474 int Effect_set_vec4(lua_State *L)
476 assert(lua_gettop(L) == 6);
477 Effect *effect = (Effect *)get_effect(L, 1);
478 string key = checkstdstring(L, 2);
480 v[0] = luaL_checknumber(L, 3);
481 v[1] = luaL_checknumber(L, 4);
482 v[2] = luaL_checknumber(L, 5);
483 v[3] = luaL_checknumber(L, 6);
484 if (!effect->set_vec4(key, v)) {
485 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
486 v[0], v[1], v[2], v[3]);
491 const luaL_Reg EffectChain_funcs[] = {
492 { "new", EffectChain_new },
493 { "__gc", EffectChain_gc },
494 { "add_live_input", EffectChain_add_live_input },
495 { "add_effect", EffectChain_add_effect },
496 { "finalize", EffectChain_finalize },
500 const luaL_Reg LiveInputWrapper_funcs[] = {
501 { "connect_signal", LiveInputWrapper_connect_signal },
505 const luaL_Reg ImageInput_funcs[] = {
506 { "new", ImageInput_new },
507 { "set_float", Effect_set_float },
508 { "set_int", Effect_set_int },
509 { "set_vec3", Effect_set_vec3 },
510 { "set_vec4", Effect_set_vec4 },
514 const luaL_Reg WhiteBalanceEffect_funcs[] = {
515 { "new", WhiteBalanceEffect_new },
516 { "set_float", Effect_set_float },
517 { "set_int", Effect_set_int },
518 { "set_vec3", Effect_set_vec3 },
519 { "set_vec4", Effect_set_vec4 },
523 const luaL_Reg ResampleEffect_funcs[] = {
524 { "new", ResampleEffect_new },
525 { "set_float", Effect_set_float },
526 { "set_int", Effect_set_int },
527 { "set_vec3", Effect_set_vec3 },
528 { "set_vec4", Effect_set_vec4 },
532 const luaL_Reg PaddingEffect_funcs[] = {
533 { "new", PaddingEffect_new },
534 { "set_float", Effect_set_float },
535 { "set_int", Effect_set_int },
536 { "set_vec3", Effect_set_vec3 },
537 { "set_vec4", Effect_set_vec4 },
541 const luaL_Reg IntegralPaddingEffect_funcs[] = {
542 { "new", IntegralPaddingEffect_new },
543 { "set_float", Effect_set_float },
544 { "set_int", Effect_set_int },
545 { "set_vec3", Effect_set_vec3 },
546 { "set_vec4", Effect_set_vec4 },
550 const luaL_Reg OverlayEffect_funcs[] = {
551 { "new", OverlayEffect_new },
552 { "set_float", Effect_set_float },
553 { "set_int", Effect_set_int },
554 { "set_vec3", Effect_set_vec3 },
555 { "set_vec4", Effect_set_vec4 },
559 const luaL_Reg ResizeEffect_funcs[] = {
560 { "new", ResizeEffect_new },
561 { "set_float", Effect_set_float },
562 { "set_int", Effect_set_int },
563 { "set_vec3", Effect_set_vec3 },
564 { "set_vec4", Effect_set_vec4 },
568 const luaL_Reg MultiplyEffect_funcs[] = {
569 { "new", MultiplyEffect_new },
570 { "set_float", Effect_set_float },
571 { "set_int", Effect_set_int },
572 { "set_vec3", Effect_set_vec3 },
573 { "set_vec4", Effect_set_vec4 },
577 const luaL_Reg MixEffect_funcs[] = {
578 { "new", MixEffect_new },
579 { "set_float", Effect_set_float },
580 { "set_int", Effect_set_int },
581 { "set_vec3", Effect_set_vec3 },
582 { "set_vec4", Effect_set_vec4 },
586 const luaL_Reg InputStateInfo_funcs[] = {
587 { "get_width", InputStateInfo_get_width },
588 { "get_height", InputStateInfo_get_height },
589 { "get_interlaced", InputStateInfo_get_interlaced },
590 { "get_has_signal", InputStateInfo_get_has_signal },
591 { "get_is_connected", InputStateInfo_get_is_connected },
592 { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
593 { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
599 LiveInputWrapper::LiveInputWrapper(Theme *theme, EffectChain *chain, bmusb::PixelFormat pixel_format, bool override_bounce, bool deinterlace)
601 pixel_format(pixel_format),
602 deinterlace(deinterlace)
604 ImageFormat inout_format;
605 inout_format.color_space = COLORSPACE_sRGB;
607 // Gamma curve depends on the input signal, and we don't really get any
608 // indications. A camera would be expected to do Rec. 709, but
609 // I haven't checked if any do in practice. However, computers _do_ output
610 // in sRGB gamma (ie., they don't convert from sRGB to Rec. 709), and
611 // I wouldn't really be surprised if most non-professional cameras do, too.
612 // So we pick sRGB as the least evil here.
613 inout_format.gamma_curve = GAMMA_sRGB;
617 deinterlace_effect = new movit::DeinterlaceEffect();
619 // As per the comments in deinterlace_effect.h, we turn this off.
620 // The most likely interlaced input for us is either a camera
621 // (where it's fine to turn it off) or a laptop (where it _should_
623 CHECK(deinterlace_effect->set_int("enable_spatial_interlacing_check", 0));
625 num_inputs = deinterlace_effect->num_inputs();
626 assert(num_inputs == FRAME_HISTORY_LENGTH);
631 if (pixel_format == bmusb::PixelFormat_8BitRGBA) {
632 for (unsigned i = 0; i < num_inputs; ++i) {
633 if (global_flags.can_disable_srgb_decoder) {
634 rgba_inputs.push_back(new sRGBSwitchingFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
636 rgba_inputs.push_back(new NonsRGBCapableFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
638 chain->add_input(rgba_inputs.back());
642 vector<Effect *> reverse_inputs(rgba_inputs.rbegin(), rgba_inputs.rend());
643 chain->add_effect(deinterlace_effect, reverse_inputs);
646 assert(pixel_format == bmusb::PixelFormat_8BitYCbCr || pixel_format == bmusb::PixelFormat_10BitYCbCr);
647 // The Blackmagic driver docs claim that the device outputs Y'CbCr
648 // according to Rec. 601, but practical testing indicates it definitely
649 // is Rec. 709 (at least up to errors attributable to rounding errors).
650 // Perhaps 601 was only to indicate the subsampling positions, not the
651 // colorspace itself? Tested with a Lenovo X1 gen 3 as input.
652 YCbCrFormat input_ycbcr_format;
653 input_ycbcr_format.chroma_subsampling_x = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1 : 2;
654 input_ycbcr_format.chroma_subsampling_y = 1;
655 input_ycbcr_format.num_levels = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1024 : 256;
656 input_ycbcr_format.cb_x_position = 0.0;
657 input_ycbcr_format.cr_x_position = 0.0;
658 input_ycbcr_format.cb_y_position = 0.5;
659 input_ycbcr_format.cr_y_position = 0.5;
660 input_ycbcr_format.luma_coefficients = YCBCR_REC_709;
661 input_ycbcr_format.full_range = false;
663 for (unsigned i = 0; i < num_inputs; ++i) {
664 // When using 10-bit input, we're converting to interleaved through v210Converter.
665 YCbCrInputSplitting splitting = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? YCBCR_INPUT_INTERLEAVED : YCBCR_INPUT_SPLIT_Y_AND_CBCR;
666 if (override_bounce) {
667 ycbcr_inputs.push_back(new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
669 ycbcr_inputs.push_back(new YCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
671 chain->add_input(ycbcr_inputs.back());
675 vector<Effect *> reverse_inputs(ycbcr_inputs.rbegin(), ycbcr_inputs.rend());
676 chain->add_effect(deinterlace_effect, reverse_inputs);
681 void LiveInputWrapper::connect_signal(int signal_num)
683 if (global_mixer == nullptr) {
688 signal_num = theme->map_signal(signal_num);
690 BufferedFrame first_frame = theme->input_state->buffered_frames[signal_num][0];
691 if (first_frame.frame == nullptr) {
695 unsigned width, height;
697 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)first_frame.frame->userdata;
698 width = userdata->last_width[first_frame.field_number];
699 height = userdata->last_height[first_frame.field_number];
702 BufferedFrame last_good_frame = first_frame;
703 for (unsigned i = 0; i < max(ycbcr_inputs.size(), rgba_inputs.size()); ++i) {
704 BufferedFrame frame = theme->input_state->buffered_frames[signal_num][i];
705 if (frame.frame == nullptr) {
706 // Not enough data; reuse last frame (well, field).
707 // This is suboptimal, but we have nothing better.
708 frame = last_good_frame;
710 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
712 unsigned this_width = userdata->last_width[frame.field_number];
713 unsigned this_height = userdata->last_height[frame.field_number];
714 if (this_width != width || this_height != height) {
715 // Resolution changed; reuse last frame/field.
716 frame = last_good_frame;
717 userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
720 assert(userdata->pixel_format == pixel_format);
721 switch (pixel_format) {
722 case bmusb::PixelFormat_8BitYCbCr:
723 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
724 ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cbcr[frame.field_number]);
725 ycbcr_inputs[i]->set_width(this_width);
726 ycbcr_inputs[i]->set_height(this_height);
728 case bmusb::PixelFormat_10BitYCbCr:
729 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_444[frame.field_number]);
730 ycbcr_inputs[i]->set_width(this_width);
731 ycbcr_inputs[i]->set_height(this_height);
733 case bmusb::PixelFormat_8BitRGBA:
734 rgba_inputs[i]->set_texture_num(userdata->tex_rgba[frame.field_number]);
735 rgba_inputs[i]->set_width(this_width);
736 rgba_inputs[i]->set_height(this_height);
742 last_good_frame = frame;
746 BufferedFrame frame = theme->input_state->buffered_frames[signal_num][0];
747 CHECK(deinterlace_effect->set_int("current_field_position", frame.field_number));
753 int call_num_channels(lua_State *L)
755 lua_getglobal(L, "num_channels");
757 if (lua_pcall(L, 0, 1, 0) != 0) {
758 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
762 int num_channels = luaL_checknumber(L, 1);
764 assert(lua_gettop(L) == 0);
770 Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
771 : resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
776 register_class("EffectChain", EffectChain_funcs);
777 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
778 register_class("ImageInput", ImageInput_funcs);
779 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
780 register_class("ResampleEffect", ResampleEffect_funcs);
781 register_class("PaddingEffect", PaddingEffect_funcs);
782 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
783 register_class("OverlayEffect", OverlayEffect_funcs);
784 register_class("ResizeEffect", ResizeEffect_funcs);
785 register_class("MultiplyEffect", MultiplyEffect_funcs);
786 register_class("MixEffect", MixEffect_funcs);
787 register_class("InputStateInfo", InputStateInfo_funcs);
789 // Run script. Search through all directories until we find a file that will load
790 // (as in, does not return LUA_ERRFILE); then run it. We store load errors
791 // from all the attempts, and show them once we know we can't find any of them.
793 vector<string> errors;
794 bool success = false;
795 for (size_t i = 0; i < search_dirs.size(); ++i) {
796 string path = search_dirs[i] + "/" + filename;
797 int err = luaL_loadfile(L, path.c_str());
799 // Success; actually call the code.
800 if (lua_pcall(L, 0, LUA_MULTRET, 0)) {
801 fprintf(stderr, "Error when running %s: %s\n", path.c_str(), lua_tostring(L, -1));
807 errors.push_back(lua_tostring(L, -1));
809 if (err != LUA_ERRFILE) {
810 // The file actually loaded, but failed to parse somehow. Abort; don't try the next one.
816 for (const string &error : errors) {
817 fprintf(stderr, "%s\n", error.c_str());
821 assert(lua_gettop(L) == 0);
823 // Ask it for the number of channels.
824 num_channels = call_num_channels(L);
832 void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
834 assert(lua_gettop(L) == 0);
835 luaL_newmetatable(L, class_name); // mt = {}
836 lua_pushlightuserdata(L, this);
837 luaL_setfuncs(L, funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
838 lua_pushvalue(L, -1);
839 lua_setfield(L, -2, "__index"); // mt.__index = mt
840 lua_setglobal(L, class_name); // ClassName = mt
841 assert(lua_gettop(L) == 0);
844 Theme::Chain Theme::get_chain(unsigned num, float t, unsigned width, unsigned height, InputState input_state)
848 unique_lock<mutex> lock(m);
849 assert(lua_gettop(L) == 0);
850 lua_getglobal(L, "get_chain"); /* function to be called */
851 lua_pushnumber(L, num);
852 lua_pushnumber(L, t);
853 lua_pushnumber(L, width);
854 lua_pushnumber(L, height);
855 wrap_lua_object<InputStateInfo>(L, "InputStateInfo", input_state);
857 if (lua_pcall(L, 5, 2, 0) != 0) {
858 fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
862 chain.chain = (EffectChain *)luaL_testudata(L, -2, "EffectChain");
863 if (chain.chain == nullptr) {
864 fprintf(stderr, "get_chain() for chain number %d did not return an EffectChain\n",
868 if (!lua_isfunction(L, -1)) {
869 fprintf(stderr, "Argument #-1 should be a function\n");
872 lua_pushvalue(L, -1);
873 shared_ptr<LuaRefWithDeleter> funcref(new LuaRefWithDeleter(&m, L, luaL_ref(L, LUA_REGISTRYINDEX)));
875 assert(lua_gettop(L) == 0);
877 chain.setup_chain = [this, funcref, input_state]{
878 unique_lock<mutex> lock(m);
880 this->input_state = &input_state;
882 // Set up state, including connecting signals.
883 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref->get());
884 if (lua_pcall(L, 0, 0, 0) != 0) {
885 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
888 assert(lua_gettop(L) == 0);
891 // TODO: Can we do better, e.g. by running setup_chain() and seeing what it references?
892 // Actually, setup_chain does maybe hold all the references we need now anyway?
893 for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
894 for (unsigned frame_num = 0; frame_num < FRAME_HISTORY_LENGTH; ++frame_num) {
895 chain.input_frames.push_back(input_state.buffered_frames[card_index][frame_num].frame);
902 string Theme::get_channel_name(unsigned channel)
904 unique_lock<mutex> lock(m);
905 lua_getglobal(L, "channel_name");
906 lua_pushnumber(L, channel);
907 if (lua_pcall(L, 1, 1, 0) != 0) {
908 fprintf(stderr, "error running function `channel_name': %s\n", lua_tostring(L, -1));
911 const char *ret = lua_tostring(L, -1);
912 if (ret == nullptr) {
913 fprintf(stderr, "function `channel_name' returned nil for channel %d\n", channel);
919 assert(lua_gettop(L) == 0);
923 int Theme::get_channel_signal(unsigned channel)
925 unique_lock<mutex> lock(m);
926 lua_getglobal(L, "channel_signal");
927 lua_pushnumber(L, channel);
928 if (lua_pcall(L, 1, 1, 0) != 0) {
929 fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
933 int ret = luaL_checknumber(L, 1);
935 assert(lua_gettop(L) == 0);
939 std::string Theme::get_channel_color(unsigned channel)
941 unique_lock<mutex> lock(m);
942 lua_getglobal(L, "channel_color");
943 lua_pushnumber(L, channel);
944 if (lua_pcall(L, 1, 1, 0) != 0) {
945 fprintf(stderr, "error running function `channel_color': %s\n", lua_tostring(L, -1));
949 const char *ret = lua_tostring(L, -1);
950 if (ret == nullptr) {
951 fprintf(stderr, "function `channel_color' returned nil for channel %d\n", channel);
957 assert(lua_gettop(L) == 0);
961 bool Theme::get_supports_set_wb(unsigned channel)
963 unique_lock<mutex> lock(m);
964 lua_getglobal(L, "supports_set_wb");
965 lua_pushnumber(L, channel);
966 if (lua_pcall(L, 1, 1, 0) != 0) {
967 fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
971 bool ret = checkbool(L, -1);
973 assert(lua_gettop(L) == 0);
977 void Theme::set_wb(unsigned channel, double r, double g, double b)
979 unique_lock<mutex> lock(m);
980 lua_getglobal(L, "set_wb");
981 lua_pushnumber(L, channel);
982 lua_pushnumber(L, r);
983 lua_pushnumber(L, g);
984 lua_pushnumber(L, b);
985 if (lua_pcall(L, 4, 0, 0) != 0) {
986 fprintf(stderr, "error running function `set_wb': %s\n", lua_tostring(L, -1));
990 assert(lua_gettop(L) == 0);
993 vector<string> Theme::get_transition_names(float t)
995 unique_lock<mutex> lock(m);
996 lua_getglobal(L, "get_transitions");
997 lua_pushnumber(L, t);
998 if (lua_pcall(L, 1, 1, 0) != 0) {
999 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
1005 while (lua_next(L, -2) != 0) {
1006 ret.push_back(lua_tostring(L, -1));
1010 assert(lua_gettop(L) == 0);
1014 int Theme::map_signal(int signal_num)
1016 unique_lock<mutex> lock(map_m);
1017 if (signal_to_card_mapping.count(signal_num)) {
1018 return signal_to_card_mapping[signal_num];
1022 if (global_flags.output_card != -1 && num_cards > 1) {
1023 // Try to exclude the output card from the default card_index.
1024 card_index = signal_num % (num_cards - 1);
1025 if (card_index >= global_flags.output_card) {
1028 if (signal_num >= int(num_cards - 1)) {
1029 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u input card(s) (card %d is busy with output).\n",
1030 signal_num, num_cards - 1, global_flags.output_card);
1031 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1034 card_index = signal_num % num_cards;
1035 if (signal_num >= int(num_cards)) {
1036 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u card(s).\n", signal_num, num_cards);
1037 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1040 signal_to_card_mapping[signal_num] = card_index;
1044 void Theme::set_signal_mapping(int signal_num, int card_num)
1046 unique_lock<mutex> lock(map_m);
1047 assert(card_num < int(num_cards));
1048 signal_to_card_mapping[signal_num] = card_num;
1051 void Theme::transition_clicked(int transition_num, float t)
1053 unique_lock<mutex> lock(m);
1054 lua_getglobal(L, "transition_clicked");
1055 lua_pushnumber(L, transition_num);
1056 lua_pushnumber(L, t);
1058 if (lua_pcall(L, 2, 0, 0) != 0) {
1059 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
1062 assert(lua_gettop(L) == 0);
1065 void Theme::channel_clicked(int preview_num)
1067 unique_lock<mutex> lock(m);
1068 lua_getglobal(L, "channel_clicked");
1069 lua_pushnumber(L, preview_num);
1071 if (lua_pcall(L, 1, 0, 0) != 0) {
1072 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));
1075 assert(lua_gettop(L) == 0);