+ void register_video_signal_connection(movit::EffectChain *chain, LiveInputWrapper *live_input, FFmpegCapture *capture)
+ {
+ video_signal_connections[chain].emplace_back(VideoSignalConnection { live_input, capture });
+ }
+
+#ifdef HAVE_CEF
+ void register_html_signal_connection(movit::EffectChain *chain, LiveInputWrapper *live_input, CEFCapture *capture)
+ {
+ html_signal_connections[chain].emplace_back(CEFSignalConnection { live_input, capture });
+ }
+#endif
+
+ struct MenuEntry {
+ std::string text;
+ int lua_ref;
+ };
+ std::vector<MenuEntry> get_theme_menu() { return theme_menu; } // Can be empty for no menu.
+ void theme_menu_entry_clicked(int lua_ref);
+
+ // Will be invoked every time the theme sets a new menu.
+ // Is not invoked for a menu that exists at the time of the callback.
+ void set_theme_menu_callback(std::function<void()> callback)
+ {
+ theme_menu_callback = callback;
+ }
+
+private:
+ void register_constants();
+ void register_class(const char *class_name, const luaL_Reg *funcs);
+ int set_theme_menu(lua_State *L);
+
+ std::string theme_path;
+
+ std::mutex m;
+ lua_State *L; // Protected by <m>.
+ const InputState *input_state = nullptr; // Protected by <m>. Only set temporarily, during chain setup.
+ movit::ResourcePool *resource_pool;
+ int num_channels;
+ unsigned num_cards;
+
+ std::mutex map_m;
+ std::map<int, int> signal_to_card_mapping; // Protected by <map_m>.
+
+ std::vector<FFmpegCapture *> video_inputs;
+ struct VideoSignalConnection {
+ LiveInputWrapper *wrapper;
+ FFmpegCapture *source;
+ };
+ std::unordered_map<movit::EffectChain *, std::vector<VideoSignalConnection>>
+ video_signal_connections;
+#ifdef HAVE_CEF
+ std::vector<CEFCapture *> html_inputs;
+ struct CEFSignalConnection {
+ LiveInputWrapper *wrapper;
+ CEFCapture *source;
+ };
+ std::unordered_map<movit::EffectChain *, std::vector<CEFSignalConnection>>
+ html_signal_connections;
+#endif
+
+ std::vector<MenuEntry> theme_menu;
+ std::function<void()> theme_menu_callback;
+
+ friend class LiveInputWrapper;
+ friend int ThemeMenu_set(lua_State *L);
+};
+
+// LiveInputWrapper is a facade on top of an YCbCrInput, exposed to
+// the Lua code. It contains a function (connect_signal()) intended
+// to be called during chain setup, that picks out the current frame
+// (in the form of a set of textures) from the input state given by
+// the mixer, and communicates that state over to the actual YCbCrInput.
+class LiveInputWrapper {
+public:
+ // Note: <override_bounce> is irrelevant for PixelFormat_8BitBGRA.
+ LiveInputWrapper(Theme *theme, movit::EffectChain *chain, bmusb::PixelFormat pixel_format, bool override_bounce, bool deinterlace, bool user_connectable);
+
+ bool connect_signal(int signal_num); // Must be called with the theme's <m> lock held, since it accesses theme->input_state. Returns false on error.
+ void connect_signal_raw(int signal_num, const InputState &input_state);
+ movit::Effect *get_effect() const