8 #include <movit/effect_chain.h>
9 #include <movit/ycbcr_input.h>
10 #include <movit/white_balance_effect.h>
11 #include <movit/resample_effect.h>
12 #include <movit/padding_effect.h>
13 #include <movit/overlay_effect.h>
14 #include <movit/resize_effect.h>
15 #include <movit/mix_effect.h>
19 #define WIDTH 1280 // FIXME
20 #define HEIGHT 720 // FIXME
23 using namespace movit;
27 vector<LiveInputWrapper *> live_inputs;
29 template<class T, class... Args>
30 int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
32 // Construct the C++ object and put it on the stack.
33 void *mem = lua_newuserdata(L, sizeof(T));
34 new(mem) T(std::forward<Args>(args)...);
36 // Look up the metatable named <class_name>, and set it on the new object.
37 luaL_getmetatable(L, class_name);
38 lua_setmetatable(L, -2);
43 Theme *get_theme_updata(lua_State* L)
45 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
46 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
49 Effect *get_effect(lua_State *L, int idx)
51 if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
52 luaL_testudata(L, idx, "ResampleEffect") ||
53 luaL_testudata(L, idx, "PaddingEffect") ||
54 luaL_testudata(L, idx, "IntegralPaddingEffect") ||
55 luaL_testudata(L, idx, "OverlayEffect") ||
56 luaL_testudata(L, idx, "ResizeEffect") ||
57 luaL_testudata(L, idx, "MixEffect")) {
58 return (Effect *)lua_touserdata(L, idx);
60 fprintf(stderr, "Error: Index #%d was not an Effect type\n", idx);
64 bool checkbool(lua_State* L, int idx)
66 luaL_checktype(L, idx, LUA_TBOOLEAN);
67 return lua_toboolean(L, idx);
70 int EffectChain_new(lua_State* L)
72 assert(lua_gettop(L) == 2);
73 int aspect_w = luaL_checknumber(L, 1);
74 int aspect_h = luaL_checknumber(L, 2);
76 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h);
79 int EffectChain_add_live_input(lua_State* L)
81 assert(lua_gettop(L) == 1);
82 Theme *theme = get_theme_updata(L);
83 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
84 return wrap_lua_object<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain);
87 int EffectChain_add_effect(lua_State* L)
89 assert(lua_gettop(L) >= 2);
90 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
92 // TODO: Better error reporting.
93 Effect *effect = get_effect(L, 2);
94 if (lua_gettop(L) == 2) {
95 chain->add_effect(effect);
97 vector<Effect *> inputs;
98 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
99 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
100 LiveInputWrapper *input = (LiveInputWrapper *)lua_touserdata(L, idx);
101 inputs.push_back(input->get_input());
103 inputs.push_back(get_effect(L, idx));
106 chain->add_effect(effect, inputs);
109 lua_settop(L, 2); // Return the effect itself.
111 // Make sure Lua doesn't garbage-collect it away.
112 lua_pushvalue(L, -1);
113 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
118 int EffectChain_finalize(lua_State* L)
120 assert(lua_gettop(L) == 2);
121 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
122 bool is_main_chain = checkbool(L, 2);
124 // Add outputs as needed.
125 ImageFormat inout_format;
126 inout_format.color_space = COLORSPACE_sRGB;
127 inout_format.gamma_curve = GAMMA_sRGB;
129 YCbCrFormat output_ycbcr_format;
130 output_ycbcr_format.chroma_subsampling_x = 1;
131 output_ycbcr_format.chroma_subsampling_y = 1;
132 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
133 output_ycbcr_format.full_range = false;
135 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR);
136 chain->set_dither_bits(8);
137 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
139 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
145 int LiveInputWrapper_connect_signal(lua_State* L)
147 assert(lua_gettop(L) == 2);
148 LiveInputWrapper *input = (LiveInputWrapper *)luaL_checkudata(L, 1, "LiveInputWrapper");
149 int signal_num = luaL_checknumber(L, 2);
150 input->connect_signal(signal_num);
154 int WhiteBalanceEffect_new(lua_State* L)
156 assert(lua_gettop(L) == 0);
157 return wrap_lua_object<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
160 int ResampleEffect_new(lua_State* L)
162 assert(lua_gettop(L) == 0);
163 return wrap_lua_object<ResampleEffect>(L, "ResampleEffect");
166 int PaddingEffect_new(lua_State* L)
168 assert(lua_gettop(L) == 0);
169 return wrap_lua_object<PaddingEffect>(L, "PaddingEffect");
172 int IntegralPaddingEffect_new(lua_State* L)
174 assert(lua_gettop(L) == 0);
175 return wrap_lua_object<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
178 int OverlayEffect_new(lua_State* L)
180 assert(lua_gettop(L) == 0);
181 return wrap_lua_object<OverlayEffect>(L, "OverlayEffect");
184 int ResizeEffect_new(lua_State* L)
186 assert(lua_gettop(L) == 0);
187 return wrap_lua_object<ResizeEffect>(L, "ResizeEffect");
190 int MixEffect_new(lua_State* L)
192 assert(lua_gettop(L) == 0);
193 return wrap_lua_object<MixEffect>(L, "MixEffect");
196 int Effect_set_float(lua_State *L)
198 assert(lua_gettop(L) == 3);
199 Effect *effect = (Effect *)get_effect(L, 1);
201 const char* cstr = lua_tolstring(L, 2, &len);
202 std::string key(cstr, len);
203 float value = luaL_checknumber(L, 3);
204 (void)effect->set_float(key, value);
208 int Effect_set_int(lua_State *L)
210 assert(lua_gettop(L) == 3);
211 Effect *effect = (Effect *)get_effect(L, 1);
213 const char* cstr = lua_tolstring(L, 2, &len);
214 std::string key(cstr, len);
215 float value = luaL_checknumber(L, 3);
216 (void)effect->set_int(key, value);
220 int Effect_set_vec4(lua_State *L)
222 assert(lua_gettop(L) == 6);
223 Effect *effect = (Effect *)get_effect(L, 1);
225 const char* cstr = lua_tolstring(L, 2, &len);
226 std::string key(cstr, len);
228 v[0] = luaL_checknumber(L, 3);
229 v[1] = luaL_checknumber(L, 4);
230 v[2] = luaL_checknumber(L, 5);
231 v[3] = luaL_checknumber(L, 6);
232 (void)effect->set_vec4(key, v);
236 const luaL_Reg EffectChain_funcs[] = {
237 { "new", EffectChain_new },
238 { "add_live_input", EffectChain_add_live_input },
239 { "add_effect", EffectChain_add_effect },
240 { "finalize", EffectChain_finalize },
244 const luaL_Reg LiveInputWrapper_funcs[] = {
245 { "connect_signal", LiveInputWrapper_connect_signal },
249 const luaL_Reg WhiteBalanceEffect_funcs[] = {
250 { "new", WhiteBalanceEffect_new },
251 { "set_float", Effect_set_float },
252 { "set_int", Effect_set_int },
253 { "set_vec4", Effect_set_vec4 },
257 const luaL_Reg ResampleEffect_funcs[] = {
258 { "new", ResampleEffect_new },
259 { "set_float", Effect_set_float },
260 { "set_int", Effect_set_int },
261 { "set_vec4", Effect_set_vec4 },
265 const luaL_Reg PaddingEffect_funcs[] = {
266 { "new", PaddingEffect_new },
267 { "set_float", Effect_set_float },
268 { "set_int", Effect_set_int },
269 { "set_vec4", Effect_set_vec4 },
273 const luaL_Reg IntegralPaddingEffect_funcs[] = {
274 { "new", IntegralPaddingEffect_new },
275 { "set_float", Effect_set_float },
276 { "set_int", Effect_set_int },
277 { "set_vec4", Effect_set_vec4 },
281 const luaL_Reg OverlayEffect_funcs[] = {
282 { "new", OverlayEffect_new },
283 { "set_float", Effect_set_float },
284 { "set_int", Effect_set_int },
285 { "set_vec4", Effect_set_vec4 },
289 const luaL_Reg ResizeEffect_funcs[] = {
290 { "new", ResizeEffect_new },
291 { "set_float", Effect_set_float },
292 { "set_int", Effect_set_int },
293 { "set_vec4", Effect_set_vec4 },
297 const luaL_Reg MixEffect_funcs[] = {
298 { "new", MixEffect_new },
299 { "set_float", Effect_set_float },
300 { "set_int", Effect_set_int },
301 { "set_vec4", Effect_set_vec4 },
307 LiveInputWrapper::LiveInputWrapper(Theme *theme, EffectChain *chain)
310 ImageFormat inout_format;
311 inout_format.color_space = COLORSPACE_sRGB;
312 inout_format.gamma_curve = GAMMA_sRGB;
314 YCbCrFormat input_ycbcr_format;
315 input_ycbcr_format.chroma_subsampling_x = 2;
316 input_ycbcr_format.chroma_subsampling_y = 1;
317 input_ycbcr_format.cb_x_position = 0.0;
318 input_ycbcr_format.cr_x_position = 0.0;
319 input_ycbcr_format.cb_y_position = 0.5;
320 input_ycbcr_format.cr_y_position = 0.5;
321 input_ycbcr_format.luma_coefficients = YCBCR_REC_601;
322 input_ycbcr_format.full_range = false;
324 input = new YCbCrInput(inout_format, input_ycbcr_format, WIDTH, HEIGHT, YCBCR_INPUT_SPLIT_Y_AND_CBCR);
325 chain->add_input(input);
328 void LiveInputWrapper::connect_signal(int signal_num)
330 theme->connect_signal(input, signal_num);
333 Theme::Theme(const char *filename, ResourcePool *resource_pool)
334 : resource_pool(resource_pool)
339 printf("constructing, this=%p\n", this);
341 register_class("EffectChain", EffectChain_funcs);
342 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
343 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
344 register_class("ResampleEffect", ResampleEffect_funcs);
345 register_class("PaddingEffect", PaddingEffect_funcs);
346 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
347 register_class("OverlayEffect", OverlayEffect_funcs);
348 register_class("ResizeEffect", ResizeEffect_funcs);
349 register_class("MixEffect", MixEffect_funcs);
353 if (luaL_dofile(L, filename)) {
354 fprintf(stderr, "error: %s\n", lua_tostring(L, -1));
358 assert(lua_gettop(L) == 0);
360 // Ask it for the number of channels.
361 lua_getglobal(L, "num_channels");
363 if (lua_pcall(L, 0, 1, 0) != 0) {
364 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
368 num_channels = luaL_checknumber(L, 1);
371 void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
373 luaL_newmetatable(L, class_name);
374 lua_pushlightuserdata(L, this);
375 luaL_setfuncs(L, funcs, 1);
376 lua_pushvalue(L, -1);
377 lua_setfield(L, -2, "__index");
378 lua_setglobal(L, class_name);
381 pair<EffectChain *, function<void()>>
382 Theme::get_chain(unsigned num, float t, unsigned width, unsigned height)
384 unique_lock<mutex> lock(m);
385 lua_getglobal(L, "get_chain"); /* function to be called */
386 lua_pushnumber(L, num);
387 lua_pushnumber(L, t);
388 lua_pushnumber(L, width);
389 lua_pushnumber(L, height);
391 if (lua_pcall(L, 4, 2, 0) != 0) {
392 fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
396 EffectChain *chain = (EffectChain *)luaL_checkudata(L, -2, "EffectChain");
397 if (!lua_isfunction(L, -1)) {
398 fprintf(stderr, "Argument #-1 should be a function\n");
401 lua_pushvalue(L, -1);
402 int funcref = luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak!
404 return make_pair(chain, [this, funcref]{
405 unique_lock<mutex> lock(m);
407 // Set up state, including connecting signals.
408 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref);
409 if (lua_pcall(L, 0, 0, 0) != 0) {
410 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
416 std::vector<std::string> Theme::get_transition_names(float t)
418 unique_lock<mutex> lock(m);
419 lua_getglobal(L, "get_transitions");
420 lua_pushnumber(L, t);
421 if (lua_pcall(L, 1, 1, 0) != 0) {
422 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
426 std::vector<std::string> ret;
428 while (lua_next(L, -2) != 0) {
429 ret.push_back(lua_tostring(L, -1));
435 void Theme::connect_signal(YCbCrInput *input, int signal_num)
437 input->set_texture_num(0, input_textures[signal_num].tex_y);
438 input->set_texture_num(1, input_textures[signal_num].tex_cbcr);
441 void Theme::transition_clicked(int transition_num, float t)
443 unique_lock<mutex> lock(m);
444 lua_getglobal(L, "transition_clicked");
445 lua_pushnumber(L, transition_num);
446 lua_pushnumber(L, t);
448 if (lua_pcall(L, 2, 0, 0) != 0) {
449 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
454 void Theme::channel_clicked(int preview_num)
456 unique_lock<mutex> lock(m);
457 lua_getglobal(L, "channel_clicked");
458 lua_pushnumber(L, preview_num);
460 if (lua_pcall(L, 1, 0, 0) != 0) {
461 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));