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"
30 #include "ffmpeg_capture.h"
32 #include "image_input.h"
34 #include "input_state.h"
35 #include "pbo_frame_allocator.h"
44 using namespace movit;
46 extern Mixer *global_mixer;
50 // Contains basically the same data as InputState, but does not hold on to
51 // a reference to the frames. This is important so that we can release them
52 // without having to wait for Lua's GC.
53 struct InputStateInfo {
54 InputStateInfo(const InputState& input_state);
56 unsigned last_width[MAX_VIDEO_CARDS], last_height[MAX_VIDEO_CARDS];
57 bool last_interlaced[MAX_VIDEO_CARDS], last_has_signal[MAX_VIDEO_CARDS], last_is_connected[MAX_VIDEO_CARDS];
58 unsigned last_frame_rate_nom[MAX_VIDEO_CARDS], last_frame_rate_den[MAX_VIDEO_CARDS];
61 InputStateInfo::InputStateInfo(const InputState &input_state)
63 for (unsigned signal_num = 0; signal_num < MAX_VIDEO_CARDS; ++signal_num) {
64 BufferedFrame frame = input_state.buffered_frames[signal_num][0];
65 if (frame.frame == nullptr) {
66 last_width[signal_num] = last_height[signal_num] = 0;
67 last_interlaced[signal_num] = false;
68 last_has_signal[signal_num] = false;
69 last_is_connected[signal_num] = false;
72 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
73 last_width[signal_num] = userdata->last_width[frame.field_number];
74 last_height[signal_num] = userdata->last_height[frame.field_number];
75 last_interlaced[signal_num] = userdata->last_interlaced;
76 last_has_signal[signal_num] = userdata->last_has_signal;
77 last_is_connected[signal_num] = userdata->last_is_connected;
78 last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
79 last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
83 class LuaRefWithDeleter {
85 LuaRefWithDeleter(mutex *m, lua_State *L, int ref) : m(m), L(L), ref(ref) {}
86 ~LuaRefWithDeleter() {
87 unique_lock<mutex> lock(*m);
88 luaL_unref(L, LUA_REGISTRYINDEX, ref);
90 int get() const { return ref; }
93 LuaRefWithDeleter(const LuaRefWithDeleter &) = delete;
100 template<class T, class... Args>
101 int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
103 // Construct the C++ object and put it on the stack.
104 void *mem = lua_newuserdata(L, sizeof(T));
105 new(mem) T(forward<Args>(args)...);
107 // Look up the metatable named <class_name>, and set it on the new object.
108 luaL_getmetatable(L, class_name);
109 lua_setmetatable(L, -2);
114 // Like wrap_lua_object, but the object is not owned by Lua; ie. it's not freed
115 // by Lua GC. This is typically the case for Effects, which are owned by EffectChain
116 // and expected to be destructed by it. The object will be of type T** instead of T*
117 // when exposed to Lua.
119 // Note that we currently leak if you allocate an Effect in this way and never call
120 // add_effect. We should see if there's a way to e.g. set __gc on it at construction time
121 // and then release that once add_effect() takes ownership.
122 template<class T, class... Args>
123 int wrap_lua_object_nonowned(lua_State* L, const char *class_name, Args&&... args)
125 // Construct the pointer ot the C++ object and put it on the stack.
126 T **obj = (T **)lua_newuserdata(L, sizeof(T *));
127 *obj = new T(forward<Args>(args)...);
129 // Look up the metatable named <class_name>, and set it on the new object.
130 luaL_getmetatable(L, class_name);
131 lua_setmetatable(L, -2);
136 Theme *get_theme_updata(lua_State* L)
138 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
139 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
142 Effect *get_effect(lua_State *L, int idx)
144 if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
145 luaL_testudata(L, idx, "ResampleEffect") ||
146 luaL_testudata(L, idx, "PaddingEffect") ||
147 luaL_testudata(L, idx, "IntegralPaddingEffect") ||
148 luaL_testudata(L, idx, "OverlayEffect") ||
149 luaL_testudata(L, idx, "ResizeEffect") ||
150 luaL_testudata(L, idx, "MultiplyEffect") ||
151 luaL_testudata(L, idx, "MixEffect") ||
152 luaL_testudata(L, idx, "ImageInput")) {
153 return *(Effect **)lua_touserdata(L, idx);
155 luaL_error(L, "Error: Index #%d was not an Effect type\n", idx);
159 InputStateInfo *get_input_state_info(lua_State *L, int idx)
161 if (luaL_testudata(L, idx, "InputStateInfo")) {
162 return (InputStateInfo *)lua_touserdata(L, idx);
164 luaL_error(L, "Error: Index #%d was not InputStateInfo\n", idx);
168 bool checkbool(lua_State* L, int idx)
170 luaL_checktype(L, idx, LUA_TBOOLEAN);
171 return lua_toboolean(L, idx);
174 string checkstdstring(lua_State *L, int index)
177 const char* cstr = lua_tolstring(L, index, &len);
178 return string(cstr, len);
181 int EffectChain_new(lua_State* L)
183 assert(lua_gettop(L) == 2);
184 Theme *theme = get_theme_updata(L);
185 int aspect_w = luaL_checknumber(L, 1);
186 int aspect_h = luaL_checknumber(L, 2);
188 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h, theme->get_resource_pool());
191 int EffectChain_gc(lua_State* L)
193 assert(lua_gettop(L) == 1);
194 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
195 chain->~EffectChain();
199 int EffectChain_add_live_input(lua_State* L)
201 assert(lua_gettop(L) == 3);
202 Theme *theme = get_theme_updata(L);
203 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
204 bool override_bounce = checkbool(L, 2);
205 bool deinterlace = checkbool(L, 3);
206 bmusb::PixelFormat pixel_format = global_flags.ten_bit_input ? bmusb::PixelFormat_10BitYCbCr : bmusb::PixelFormat_8BitYCbCr;
208 // Needs to be nonowned to match add_video_input (see below).
209 return wrap_lua_object_nonowned<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, pixel_format, override_bounce, deinterlace);
212 int EffectChain_add_video_input(lua_State* L)
214 assert(lua_gettop(L) == 3);
215 Theme *theme = get_theme_updata(L);
216 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
217 FFmpegCapture **capture = (FFmpegCapture **)luaL_checkudata(L, 2, "VideoInput");
218 bool deinterlace = checkbool(L, 3);
220 // These need to be nonowned, so that the LiveInputWrapper still exists
221 // and can feed frames to the right EffectChain even if the Lua code
222 // doesn't care about the object anymore. (If we change this, we'd need
223 // to also unregister the signal connection on __gc.)
224 int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
225 L, "LiveInputWrapper", theme, chain, bmusb::PixelFormat_8BitRGBA,
226 /*override_bounce=*/false, deinterlace);
228 Theme *theme = get_theme_updata(L);
229 LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
230 theme->register_signal_connection(*live_input, *capture);
235 int EffectChain_add_effect(lua_State* L)
237 assert(lua_gettop(L) >= 2);
238 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
240 // TODO: Better error reporting.
241 Effect *effect = get_effect(L, 2);
242 if (lua_gettop(L) == 2) {
243 if (effect->num_inputs() == 0) {
244 chain->add_input((Input *)effect);
246 chain->add_effect(effect);
249 vector<Effect *> inputs;
250 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
251 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
252 LiveInputWrapper **input = (LiveInputWrapper **)lua_touserdata(L, idx);
253 inputs.push_back((*input)->get_effect());
255 inputs.push_back(get_effect(L, idx));
258 chain->add_effect(effect, inputs);
261 lua_settop(L, 2); // Return the effect itself.
263 // Make sure Lua doesn't garbage-collect it away.
264 lua_pushvalue(L, -1);
265 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
270 int EffectChain_finalize(lua_State* L)
272 assert(lua_gettop(L) == 2);
273 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
274 bool is_main_chain = checkbool(L, 2);
276 // Add outputs as needed.
277 // NOTE: If you change any details about the output format, you will need to
278 // also update what's given to the muxer (HTTPD::Mux constructor) and
279 // what's put in the H.264 stream (sps_rbsp()).
280 ImageFormat inout_format;
281 inout_format.color_space = COLORSPACE_REC_709;
283 // Output gamma is tricky. We should output Rec. 709 for TV, except that
284 // we expect to run with web players and others that don't really care and
285 // just output with no conversion. So that means we'll need to output sRGB,
286 // even though H.264 has no setting for that (we use “unspecified”).
287 inout_format.gamma_curve = GAMMA_sRGB;
290 YCbCrFormat output_ycbcr_format;
291 // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
292 // happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
293 output_ycbcr_format.chroma_subsampling_x = 1;
294 output_ycbcr_format.chroma_subsampling_y = 1;
296 // This will be overridden if HDMI/SDI output is in force.
297 if (global_flags.ycbcr_rec709_coefficients) {
298 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
300 output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
303 output_ycbcr_format.full_range = false;
304 output_ycbcr_format.num_levels = 1 << global_flags.x264_bit_depth;
306 GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
308 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR, type);
310 // If we're using zerocopy video encoding (so the destination
311 // Y texture is owned by VA-API and will be unavailable for
312 // display), add a copy, where we'll only be using the Y component.
313 if (global_flags.use_zerocopy) {
314 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.
316 chain->set_dither_bits(global_flags.x264_bit_depth > 8 ? 16 : 8);
317 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
319 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
326 int LiveInputWrapper_connect_signal(lua_State* L)
328 assert(lua_gettop(L) == 2);
329 LiveInputWrapper **input = (LiveInputWrapper **)luaL_checkudata(L, 1, "LiveInputWrapper");
330 int signal_num = luaL_checknumber(L, 2);
331 (*input)->connect_signal(signal_num);
335 int ImageInput_new(lua_State* L)
337 assert(lua_gettop(L) == 1);
338 string filename = checkstdstring(L, 1);
339 return wrap_lua_object_nonowned<ImageInput>(L, "ImageInput", filename);
342 int VideoInput_new(lua_State* L)
344 assert(lua_gettop(L) == 1);
345 string filename = checkstdstring(L, 1);
346 int ret = wrap_lua_object_nonowned<FFmpegCapture>(L, "VideoInput", filename, global_flags.width, global_flags.height);
348 Theme *theme = get_theme_updata(L);
349 FFmpegCapture **capture = (FFmpegCapture **)lua_touserdata(L, -1);
350 theme->register_video_input(*capture);
355 int VideoInput_rewind(lua_State* L)
357 assert(lua_gettop(L) == 1);
358 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
359 (*video_input)->rewind();
363 int VideoInput_change_rate(lua_State* L)
365 assert(lua_gettop(L) == 2);
366 FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
367 double new_rate = luaL_checknumber(L, 2);
368 (*video_input)->change_rate(new_rate);
372 int WhiteBalanceEffect_new(lua_State* L)
374 assert(lua_gettop(L) == 0);
375 return wrap_lua_object_nonowned<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
378 int ResampleEffect_new(lua_State* L)
380 assert(lua_gettop(L) == 0);
381 return wrap_lua_object_nonowned<ResampleEffect>(L, "ResampleEffect");
384 int PaddingEffect_new(lua_State* L)
386 assert(lua_gettop(L) == 0);
387 return wrap_lua_object_nonowned<PaddingEffect>(L, "PaddingEffect");
390 int IntegralPaddingEffect_new(lua_State* L)
392 assert(lua_gettop(L) == 0);
393 return wrap_lua_object_nonowned<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
396 int OverlayEffect_new(lua_State* L)
398 assert(lua_gettop(L) == 0);
399 return wrap_lua_object_nonowned<OverlayEffect>(L, "OverlayEffect");
402 int ResizeEffect_new(lua_State* L)
404 assert(lua_gettop(L) == 0);
405 return wrap_lua_object_nonowned<ResizeEffect>(L, "ResizeEffect");
408 int MultiplyEffect_new(lua_State* L)
410 assert(lua_gettop(L) == 0);
411 return wrap_lua_object_nonowned<MultiplyEffect>(L, "MultiplyEffect");
414 int MixEffect_new(lua_State* L)
416 assert(lua_gettop(L) == 0);
417 return wrap_lua_object_nonowned<MixEffect>(L, "MixEffect");
420 int InputStateInfo_get_width(lua_State* L)
422 assert(lua_gettop(L) == 2);
423 InputStateInfo *input_state_info = get_input_state_info(L, 1);
424 Theme *theme = get_theme_updata(L);
425 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
426 lua_pushnumber(L, input_state_info->last_width[signal_num]);
430 int InputStateInfo_get_height(lua_State* L)
432 assert(lua_gettop(L) == 2);
433 InputStateInfo *input_state_info = get_input_state_info(L, 1);
434 Theme *theme = get_theme_updata(L);
435 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
436 lua_pushnumber(L, input_state_info->last_height[signal_num]);
440 int InputStateInfo_get_interlaced(lua_State* L)
442 assert(lua_gettop(L) == 2);
443 InputStateInfo *input_state_info = get_input_state_info(L, 1);
444 Theme *theme = get_theme_updata(L);
445 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
446 lua_pushboolean(L, input_state_info->last_interlaced[signal_num]);
450 int InputStateInfo_get_has_signal(lua_State* L)
452 assert(lua_gettop(L) == 2);
453 InputStateInfo *input_state_info = get_input_state_info(L, 1);
454 Theme *theme = get_theme_updata(L);
455 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
456 lua_pushboolean(L, input_state_info->last_has_signal[signal_num]);
460 int InputStateInfo_get_is_connected(lua_State* L)
462 assert(lua_gettop(L) == 2);
463 InputStateInfo *input_state_info = get_input_state_info(L, 1);
464 Theme *theme = get_theme_updata(L);
465 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
466 lua_pushboolean(L, input_state_info->last_is_connected[signal_num]);
470 int InputStateInfo_get_frame_rate_nom(lua_State* L)
472 assert(lua_gettop(L) == 2);
473 InputStateInfo *input_state_info = get_input_state_info(L, 1);
474 Theme *theme = get_theme_updata(L);
475 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
476 lua_pushnumber(L, input_state_info->last_frame_rate_nom[signal_num]);
480 int InputStateInfo_get_frame_rate_den(lua_State* L)
482 assert(lua_gettop(L) == 2);
483 InputStateInfo *input_state_info = get_input_state_info(L, 1);
484 Theme *theme = get_theme_updata(L);
485 int signal_num = theme->map_signal(luaL_checknumber(L, 2));
486 lua_pushnumber(L, input_state_info->last_frame_rate_den[signal_num]);
490 int Effect_set_float(lua_State *L)
492 assert(lua_gettop(L) == 3);
493 Effect *effect = (Effect *)get_effect(L, 1);
494 string key = checkstdstring(L, 2);
495 float value = luaL_checknumber(L, 3);
496 if (!effect->set_float(key, value)) {
497 luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
502 int Effect_set_int(lua_State *L)
504 assert(lua_gettop(L) == 3);
505 Effect *effect = (Effect *)get_effect(L, 1);
506 string key = checkstdstring(L, 2);
507 float value = luaL_checknumber(L, 3);
508 if (!effect->set_int(key, value)) {
509 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
514 int Effect_set_vec3(lua_State *L)
516 assert(lua_gettop(L) == 5);
517 Effect *effect = (Effect *)get_effect(L, 1);
518 string key = checkstdstring(L, 2);
520 v[0] = luaL_checknumber(L, 3);
521 v[1] = luaL_checknumber(L, 4);
522 v[2] = luaL_checknumber(L, 5);
523 if (!effect->set_vec3(key, v)) {
524 luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
530 int Effect_set_vec4(lua_State *L)
532 assert(lua_gettop(L) == 6);
533 Effect *effect = (Effect *)get_effect(L, 1);
534 string key = checkstdstring(L, 2);
536 v[0] = luaL_checknumber(L, 3);
537 v[1] = luaL_checknumber(L, 4);
538 v[2] = luaL_checknumber(L, 5);
539 v[3] = luaL_checknumber(L, 6);
540 if (!effect->set_vec4(key, v)) {
541 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
542 v[0], v[1], v[2], v[3]);
547 const luaL_Reg EffectChain_funcs[] = {
548 { "new", EffectChain_new },
549 { "__gc", EffectChain_gc },
550 { "add_live_input", EffectChain_add_live_input },
551 { "add_video_input", EffectChain_add_video_input },
552 { "add_effect", EffectChain_add_effect },
553 { "finalize", EffectChain_finalize },
557 const luaL_Reg LiveInputWrapper_funcs[] = {
558 { "connect_signal", LiveInputWrapper_connect_signal },
562 const luaL_Reg ImageInput_funcs[] = {
563 { "new", ImageInput_new },
564 { "set_float", Effect_set_float },
565 { "set_int", Effect_set_int },
566 { "set_vec3", Effect_set_vec3 },
567 { "set_vec4", Effect_set_vec4 },
571 const luaL_Reg VideoInput_funcs[] = {
572 { "new", VideoInput_new },
573 { "rewind", VideoInput_rewind },
574 { "change_rate", VideoInput_change_rate },
578 const luaL_Reg WhiteBalanceEffect_funcs[] = {
579 { "new", WhiteBalanceEffect_new },
580 { "set_float", Effect_set_float },
581 { "set_int", Effect_set_int },
582 { "set_vec3", Effect_set_vec3 },
583 { "set_vec4", Effect_set_vec4 },
587 const luaL_Reg ResampleEffect_funcs[] = {
588 { "new", ResampleEffect_new },
589 { "set_float", Effect_set_float },
590 { "set_int", Effect_set_int },
591 { "set_vec3", Effect_set_vec3 },
592 { "set_vec4", Effect_set_vec4 },
596 const luaL_Reg PaddingEffect_funcs[] = {
597 { "new", PaddingEffect_new },
598 { "set_float", Effect_set_float },
599 { "set_int", Effect_set_int },
600 { "set_vec3", Effect_set_vec3 },
601 { "set_vec4", Effect_set_vec4 },
605 const luaL_Reg IntegralPaddingEffect_funcs[] = {
606 { "new", IntegralPaddingEffect_new },
607 { "set_float", Effect_set_float },
608 { "set_int", Effect_set_int },
609 { "set_vec3", Effect_set_vec3 },
610 { "set_vec4", Effect_set_vec4 },
614 const luaL_Reg OverlayEffect_funcs[] = {
615 { "new", OverlayEffect_new },
616 { "set_float", Effect_set_float },
617 { "set_int", Effect_set_int },
618 { "set_vec3", Effect_set_vec3 },
619 { "set_vec4", Effect_set_vec4 },
623 const luaL_Reg ResizeEffect_funcs[] = {
624 { "new", ResizeEffect_new },
625 { "set_float", Effect_set_float },
626 { "set_int", Effect_set_int },
627 { "set_vec3", Effect_set_vec3 },
628 { "set_vec4", Effect_set_vec4 },
632 const luaL_Reg MultiplyEffect_funcs[] = {
633 { "new", MultiplyEffect_new },
634 { "set_float", Effect_set_float },
635 { "set_int", Effect_set_int },
636 { "set_vec3", Effect_set_vec3 },
637 { "set_vec4", Effect_set_vec4 },
641 const luaL_Reg MixEffect_funcs[] = {
642 { "new", MixEffect_new },
643 { "set_float", Effect_set_float },
644 { "set_int", Effect_set_int },
645 { "set_vec3", Effect_set_vec3 },
646 { "set_vec4", Effect_set_vec4 },
650 const luaL_Reg InputStateInfo_funcs[] = {
651 { "get_width", InputStateInfo_get_width },
652 { "get_height", InputStateInfo_get_height },
653 { "get_interlaced", InputStateInfo_get_interlaced },
654 { "get_has_signal", InputStateInfo_get_has_signal },
655 { "get_is_connected", InputStateInfo_get_is_connected },
656 { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
657 { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
663 LiveInputWrapper::LiveInputWrapper(Theme *theme, EffectChain *chain, bmusb::PixelFormat pixel_format, bool override_bounce, bool deinterlace)
665 pixel_format(pixel_format),
666 deinterlace(deinterlace)
668 ImageFormat inout_format;
669 inout_format.color_space = COLORSPACE_sRGB;
671 // Gamma curve depends on the input signal, and we don't really get any
672 // indications. A camera would be expected to do Rec. 709, but
673 // I haven't checked if any do in practice. However, computers _do_ output
674 // in sRGB gamma (ie., they don't convert from sRGB to Rec. 709), and
675 // I wouldn't really be surprised if most non-professional cameras do, too.
676 // So we pick sRGB as the least evil here.
677 inout_format.gamma_curve = GAMMA_sRGB;
681 deinterlace_effect = new movit::DeinterlaceEffect();
683 // As per the comments in deinterlace_effect.h, we turn this off.
684 // The most likely interlaced input for us is either a camera
685 // (where it's fine to turn it off) or a laptop (where it _should_
687 CHECK(deinterlace_effect->set_int("enable_spatial_interlacing_check", 0));
689 num_inputs = deinterlace_effect->num_inputs();
690 assert(num_inputs == FRAME_HISTORY_LENGTH);
695 if (pixel_format == bmusb::PixelFormat_8BitRGBA) {
696 for (unsigned i = 0; i < num_inputs; ++i) {
697 if (global_flags.can_disable_srgb_decoder) {
698 rgba_inputs.push_back(new sRGBSwitchingFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
700 rgba_inputs.push_back(new NonsRGBCapableFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
702 chain->add_input(rgba_inputs.back());
706 vector<Effect *> reverse_inputs(rgba_inputs.rbegin(), rgba_inputs.rend());
707 chain->add_effect(deinterlace_effect, reverse_inputs);
710 assert(pixel_format == bmusb::PixelFormat_8BitYCbCr || pixel_format == bmusb::PixelFormat_10BitYCbCr);
711 // The Blackmagic driver docs claim that the device outputs Y'CbCr
712 // according to Rec. 601, but practical testing indicates it definitely
713 // is Rec. 709 (at least up to errors attributable to rounding errors).
714 // Perhaps 601 was only to indicate the subsampling positions, not the
715 // colorspace itself? Tested with a Lenovo X1 gen 3 as input.
716 YCbCrFormat input_ycbcr_format;
717 input_ycbcr_format.chroma_subsampling_x = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1 : 2;
718 input_ycbcr_format.chroma_subsampling_y = 1;
719 input_ycbcr_format.num_levels = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1024 : 256;
720 input_ycbcr_format.cb_x_position = 0.0;
721 input_ycbcr_format.cr_x_position = 0.0;
722 input_ycbcr_format.cb_y_position = 0.5;
723 input_ycbcr_format.cr_y_position = 0.5;
724 input_ycbcr_format.luma_coefficients = YCBCR_REC_709;
725 input_ycbcr_format.full_range = false;
727 for (unsigned i = 0; i < num_inputs; ++i) {
728 // When using 10-bit input, we're converting to interleaved through v210Converter.
729 YCbCrInputSplitting splitting = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? YCBCR_INPUT_INTERLEAVED : YCBCR_INPUT_SPLIT_Y_AND_CBCR;
730 if (override_bounce) {
731 ycbcr_inputs.push_back(new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
733 ycbcr_inputs.push_back(new YCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
735 chain->add_input(ycbcr_inputs.back());
739 vector<Effect *> reverse_inputs(ycbcr_inputs.rbegin(), ycbcr_inputs.rend());
740 chain->add_effect(deinterlace_effect, reverse_inputs);
745 void LiveInputWrapper::connect_signal(int signal_num)
747 if (global_mixer == nullptr) {
752 signal_num = theme->map_signal(signal_num);
753 connect_signal_raw(signal_num);
756 void LiveInputWrapper::connect_signal_raw(int signal_num)
758 BufferedFrame first_frame = theme->input_state->buffered_frames[signal_num][0];
759 if (first_frame.frame == nullptr) {
763 unsigned width, height;
765 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)first_frame.frame->userdata;
766 width = userdata->last_width[first_frame.field_number];
767 height = userdata->last_height[first_frame.field_number];
770 BufferedFrame last_good_frame = first_frame;
771 for (unsigned i = 0; i < max(ycbcr_inputs.size(), rgba_inputs.size()); ++i) {
772 BufferedFrame frame = theme->input_state->buffered_frames[signal_num][i];
773 if (frame.frame == nullptr) {
774 // Not enough data; reuse last frame (well, field).
775 // This is suboptimal, but we have nothing better.
776 frame = last_good_frame;
778 const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
780 unsigned this_width = userdata->last_width[frame.field_number];
781 unsigned this_height = userdata->last_height[frame.field_number];
782 if (this_width != width || this_height != height) {
783 // Resolution changed; reuse last frame/field.
784 frame = last_good_frame;
785 userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
788 assert(userdata->pixel_format == pixel_format);
789 switch (pixel_format) {
790 case bmusb::PixelFormat_8BitYCbCr:
791 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
792 ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cbcr[frame.field_number]);
793 ycbcr_inputs[i]->set_width(this_width);
794 ycbcr_inputs[i]->set_height(this_height);
796 case bmusb::PixelFormat_10BitYCbCr:
797 ycbcr_inputs[i]->set_texture_num(0, userdata->tex_444[frame.field_number]);
798 ycbcr_inputs[i]->set_width(this_width);
799 ycbcr_inputs[i]->set_height(this_height);
801 case bmusb::PixelFormat_8BitRGBA:
802 rgba_inputs[i]->set_texture_num(userdata->tex_rgba[frame.field_number]);
803 rgba_inputs[i]->set_width(this_width);
804 rgba_inputs[i]->set_height(this_height);
810 last_good_frame = frame;
814 BufferedFrame frame = theme->input_state->buffered_frames[signal_num][0];
815 CHECK(deinterlace_effect->set_int("current_field_position", frame.field_number));
821 int call_num_channels(lua_State *L)
823 lua_getglobal(L, "num_channels");
825 if (lua_pcall(L, 0, 1, 0) != 0) {
826 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
830 int num_channels = luaL_checknumber(L, 1);
832 assert(lua_gettop(L) == 0);
838 Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
839 : resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
844 register_class("EffectChain", EffectChain_funcs);
845 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
846 register_class("ImageInput", ImageInput_funcs);
847 register_class("VideoInput", VideoInput_funcs);
848 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
849 register_class("ResampleEffect", ResampleEffect_funcs);
850 register_class("PaddingEffect", PaddingEffect_funcs);
851 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
852 register_class("OverlayEffect", OverlayEffect_funcs);
853 register_class("ResizeEffect", ResizeEffect_funcs);
854 register_class("MultiplyEffect", MultiplyEffect_funcs);
855 register_class("MixEffect", MixEffect_funcs);
856 register_class("InputStateInfo", InputStateInfo_funcs);
858 // Run script. Search through all directories until we find a file that will load
859 // (as in, does not return LUA_ERRFILE); then run it. We store load errors
860 // from all the attempts, and show them once we know we can't find any of them.
862 vector<string> errors;
863 bool success = false;
864 for (size_t i = 0; i < search_dirs.size(); ++i) {
865 string path = search_dirs[i] + "/" + filename;
866 int err = luaL_loadfile(L, path.c_str());
868 // Success; actually call the code.
869 if (lua_pcall(L, 0, LUA_MULTRET, 0)) {
870 fprintf(stderr, "Error when running %s: %s\n", path.c_str(), lua_tostring(L, -1));
876 errors.push_back(lua_tostring(L, -1));
878 if (err != LUA_ERRFILE) {
879 // The file actually loaded, but failed to parse somehow. Abort; don't try the next one.
885 for (const string &error : errors) {
886 fprintf(stderr, "%s\n", error.c_str());
890 assert(lua_gettop(L) == 0);
892 // Ask it for the number of channels.
893 num_channels = call_num_channels(L);
901 void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
903 assert(lua_gettop(L) == 0);
904 luaL_newmetatable(L, class_name); // mt = {}
905 lua_pushlightuserdata(L, this);
906 luaL_setfuncs(L, funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
907 lua_pushvalue(L, -1);
908 lua_setfield(L, -2, "__index"); // mt.__index = mt
909 lua_setglobal(L, class_name); // ClassName = mt
910 assert(lua_gettop(L) == 0);
913 Theme::Chain Theme::get_chain(unsigned num, float t, unsigned width, unsigned height, InputState input_state)
917 unique_lock<mutex> lock(m);
918 assert(lua_gettop(L) == 0);
919 lua_getglobal(L, "get_chain"); /* function to be called */
920 lua_pushnumber(L, num);
921 lua_pushnumber(L, t);
922 lua_pushnumber(L, width);
923 lua_pushnumber(L, height);
924 wrap_lua_object<InputStateInfo>(L, "InputStateInfo", input_state);
926 if (lua_pcall(L, 5, 2, 0) != 0) {
927 fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
931 chain.chain = (EffectChain *)luaL_testudata(L, -2, "EffectChain");
932 if (chain.chain == nullptr) {
933 fprintf(stderr, "get_chain() for chain number %d did not return an EffectChain\n",
937 if (!lua_isfunction(L, -1)) {
938 fprintf(stderr, "Argument #-1 should be a function\n");
941 lua_pushvalue(L, -1);
942 shared_ptr<LuaRefWithDeleter> funcref(new LuaRefWithDeleter(&m, L, luaL_ref(L, LUA_REGISTRYINDEX)));
944 assert(lua_gettop(L) == 0);
946 chain.setup_chain = [this, funcref, input_state]{
947 unique_lock<mutex> lock(m);
949 this->input_state = &input_state;
951 // Set up state, including connecting signals.
952 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref->get());
953 if (lua_pcall(L, 0, 0, 0) != 0) {
954 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
957 assert(lua_gettop(L) == 0);
960 // TODO: Can we do better, e.g. by running setup_chain() and seeing what it references?
961 // Actually, setup_chain does maybe hold all the references we need now anyway?
962 for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
963 for (unsigned frame_num = 0; frame_num < FRAME_HISTORY_LENGTH; ++frame_num) {
964 chain.input_frames.push_back(input_state.buffered_frames[card_index][frame_num].frame);
971 string Theme::get_channel_name(unsigned channel)
973 unique_lock<mutex> lock(m);
974 lua_getglobal(L, "channel_name");
975 lua_pushnumber(L, channel);
976 if (lua_pcall(L, 1, 1, 0) != 0) {
977 fprintf(stderr, "error running function `channel_name': %s\n", lua_tostring(L, -1));
980 const char *ret = lua_tostring(L, -1);
981 if (ret == nullptr) {
982 fprintf(stderr, "function `channel_name' returned nil for channel %d\n", channel);
988 assert(lua_gettop(L) == 0);
992 int Theme::get_channel_signal(unsigned channel)
994 unique_lock<mutex> lock(m);
995 lua_getglobal(L, "channel_signal");
996 lua_pushnumber(L, channel);
997 if (lua_pcall(L, 1, 1, 0) != 0) {
998 fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
1002 int ret = luaL_checknumber(L, 1);
1004 assert(lua_gettop(L) == 0);
1008 std::string Theme::get_channel_color(unsigned channel)
1010 unique_lock<mutex> lock(m);
1011 lua_getglobal(L, "channel_color");
1012 lua_pushnumber(L, channel);
1013 if (lua_pcall(L, 1, 1, 0) != 0) {
1014 fprintf(stderr, "error running function `channel_color': %s\n", lua_tostring(L, -1));
1018 const char *ret = lua_tostring(L, -1);
1019 if (ret == nullptr) {
1020 fprintf(stderr, "function `channel_color' returned nil for channel %d\n", channel);
1024 string retstr = ret;
1026 assert(lua_gettop(L) == 0);
1030 bool Theme::get_supports_set_wb(unsigned channel)
1032 unique_lock<mutex> lock(m);
1033 lua_getglobal(L, "supports_set_wb");
1034 lua_pushnumber(L, channel);
1035 if (lua_pcall(L, 1, 1, 0) != 0) {
1036 fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
1040 bool ret = checkbool(L, -1);
1042 assert(lua_gettop(L) == 0);
1046 void Theme::set_wb(unsigned channel, double r, double g, double b)
1048 unique_lock<mutex> lock(m);
1049 lua_getglobal(L, "set_wb");
1050 lua_pushnumber(L, channel);
1051 lua_pushnumber(L, r);
1052 lua_pushnumber(L, g);
1053 lua_pushnumber(L, b);
1054 if (lua_pcall(L, 4, 0, 0) != 0) {
1055 fprintf(stderr, "error running function `set_wb': %s\n", lua_tostring(L, -1));
1059 assert(lua_gettop(L) == 0);
1062 vector<string> Theme::get_transition_names(float t)
1064 unique_lock<mutex> lock(m);
1065 lua_getglobal(L, "get_transitions");
1066 lua_pushnumber(L, t);
1067 if (lua_pcall(L, 1, 1, 0) != 0) {
1068 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
1074 while (lua_next(L, -2) != 0) {
1075 ret.push_back(lua_tostring(L, -1));
1079 assert(lua_gettop(L) == 0);
1083 int Theme::map_signal(int signal_num)
1085 unique_lock<mutex> lock(map_m);
1086 if (signal_to_card_mapping.count(signal_num)) {
1087 return signal_to_card_mapping[signal_num];
1091 if (global_flags.output_card != -1 && num_cards > 1) {
1092 // Try to exclude the output card from the default card_index.
1093 card_index = signal_num % (num_cards - 1);
1094 if (card_index >= global_flags.output_card) {
1097 if (signal_num >= int(num_cards - 1)) {
1098 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u input card(s) (card %d is busy with output).\n",
1099 signal_num, num_cards - 1, global_flags.output_card);
1100 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1103 card_index = signal_num % num_cards;
1104 if (signal_num >= int(num_cards)) {
1105 fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u card(s).\n", signal_num, num_cards);
1106 fprintf(stderr, "Mapping to card %d instead.\n", card_index);
1109 signal_to_card_mapping[signal_num] = card_index;
1113 void Theme::set_signal_mapping(int signal_num, int card_num)
1115 unique_lock<mutex> lock(map_m);
1116 assert(card_num < int(num_cards));
1117 signal_to_card_mapping[signal_num] = card_num;
1120 void Theme::transition_clicked(int transition_num, float t)
1122 unique_lock<mutex> lock(m);
1123 lua_getglobal(L, "transition_clicked");
1124 lua_pushnumber(L, transition_num);
1125 lua_pushnumber(L, t);
1127 if (lua_pcall(L, 2, 0, 0) != 0) {
1128 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
1131 assert(lua_gettop(L) == 0);
1134 void Theme::channel_clicked(int preview_num)
1136 unique_lock<mutex> lock(m);
1137 lua_getglobal(L, "channel_clicked");
1138 lua_pushnumber(L, preview_num);
1140 if (lua_pcall(L, 1, 0, 0) != 0) {
1141 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));
1144 assert(lua_gettop(L) == 0);