This completes the theme conversion for all called-only-once functions.
As before, the old versions are supported for pre-1.9.0 compatibility.
local wb_effect = scene:add_effect(WhiteBalanceEffect.new())
scene:finalize()
--- Set some global state.
-Nageru.set_num_channels(2) -- Can only be called at the start of the program.
+-- Set some global state. Unless marked otherwise, these can only be set once,
+-- at the start of the program.
+Nageru.set_num_channels(2)
+
+-- Sets, for each channel, which signal it corresponds to (starting from 0).
+-- The information is used for whether right-click on the channel should bring up
+-- an input selector or not. Only call this for channels that actually correspond
+-- directly to a signal (ie., live inputs, not live (0) or preview (1)).
+Nageru.set_channel_signal(2, 0)
+Nageru.set_channel_signal(3, 1)
+
+-- Set whether a given channel supports setting white balance. (Default is false.)
+Nageru.set_supports_wb(2, true)
+Nageru.set_supports_wb(3, true)
+
+-- These can be set at any time.
Nageru.set_channel_name(2, "First input")
Nageru.set_channel_name(3, "Second input")
--- API ENTRY POINT
--- Returns, given a channel number, which signal it corresponds to (starting from 0).
--- Should return -1 if the channel does not correspond to a simple signal.
--- (The information is used for whether right-click on the channel should bring up
--- an input selector or not.)
--- Called once for each channel, at the start of the program.
--- Will never be called for live (0) or preview (1).
-function channel_signal(channel)
- if channel == 2 then
- return 0
- elseif channel == 3 then
- return 1
- else
- return -1
- end
-end
-
-- API ENTRY POINT
-- Called every frame. Returns the color (if any) to paint around the given
-- channel. Returns a CSS color (typically to mark live and preview signals);
return "transparent"
end
--- API ENTRY POINT
--- Returns if a given channel supports setting white balance (starting from 2).
--- Called only once for each channel, at the start of the program.
-function supports_set_wb(channel)
- return channel == 2 or channel == 3
-end
-
-- API ENTRY POINT
-- Gets called with a new gray point when the white balance is changing.
-- The color is in linear light (not sRGB gamma).
return 0;
}
+int Nageru_set_channel_signal(lua_State *L)
+{
+ // NOTE: m is already locked.
+ Theme *theme = get_theme_updata(L);
+ if (theme->startup_finished) {
+ luaL_error(L, "set_channel_signal() can only be called at startup.");
+ }
+ unsigned channel = luaL_checknumber(L, 1);
+ int signal = luaL_checknumber(L, 2);
+ theme->channel_signals[channel] = signal;
+ lua_pop(L, 2);
+ return 0;
+}
+
+int Nageru_set_supports_wb(lua_State *L)
+{
+ // NOTE: m is already locked.
+ Theme *theme = get_theme_updata(L);
+ if (theme->startup_finished) {
+ luaL_error(L, "set_supports_wb() can only be called at startup.");
+ }
+ unsigned channel = luaL_checknumber(L, 1);
+ bool supports_wb = checkbool(L, 2);
+ theme->channel_supports_wb[channel] = supports_wb;
+ lua_pop(L, 2);
+ return 0;
+}
+
Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
: resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
{
const luaL_Reg Nageru_funcs[] = {
{ "set_channel_name", Nageru_set_channel_name },
{ "set_num_channels", Nageru_set_num_channels },
+ { "set_channel_signal", Nageru_set_channel_signal },
+ { "set_supports_wb", Nageru_set_supports_wb },
{ NULL, NULL }
};
lua_pushlightuserdata(L, this);
{
lock_guard<mutex> lock(m);
lua_getglobal(L, "channel_signal");
+ if (lua_isnil(L, -1)) {
+ lua_pop(L, 1);
+ if (channel_signals.count(channel)) {
+ return channel_signals[channel];
+ } else {
+ return -1;
+ }
+ }
+
lua_pushnumber(L, channel);
if (lua_pcall(L, 1, 1, 0) != 0) {
fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
+ fprintf(stderr, "Try Nageru.set_channel_signal(channel, signal) at the start of the script instead.\n");
abort();
}
{
lock_guard<mutex> lock(m);
lua_getglobal(L, "supports_set_wb");
+ if (lua_isnil(L, -1)) {
+ lua_pop(L, 1);
+ if (channel_supports_wb.count(channel)) {
+ return channel_supports_wb[channel];
+ } else {
+ return false;
+ }
+ }
+
lua_pushnumber(L, channel);
if (lua_pcall(L, 1, 1, 0) != 0) {
fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
+ fprintf(stderr, "Try Nageru.set_supports_wb(channel, bool) at the start of the script instead.\n");
abort();
}
std::function<void()> theme_menu_callback;
std::map<unsigned, std::string> channel_names; // Set using Nageru.set_channel_name(). Protected by <m>.
+ std::map<unsigned, int> channel_signals; // Set using Nageru.set_channel_signal(). Protected by <m>.
+ std::map<unsigned, bool> channel_supports_wb; // Set using Nageru.set_supports_wb(). Protected by <m>.
friend class LiveInputWrapper;
friend class Scene;
friend int ThemeMenu_set(lua_State *L);
friend int Nageru_set_channel_name(lua_State *L);
friend int Nageru_set_num_channels(lua_State *L);
+ friend int Nageru_set_channel_signal(lua_State *L);
+ friend int Nageru_set_supports_wb(lua_State *L);
};
// LiveInputWrapper is a facade on top of an YCbCrInput, exposed to
-- Set some global state.
Nageru.set_num_channels(4) -- Can only be called at the start of the program.
+
+-- Set some global state. Unless marked otherwise, these can only be set once,
+-- at the start of the program.
+Nageru.set_num_channels(4)
+
+-- Sets, for each channel, which signal it corresponds to (starting from 0).
+-- The information is used for whether right-click on the channel should bring up
+-- an input selector or not. Only call this for channels that actually correspond
+-- directly to a signal (ie., live inputs, not live (0) or preview (1)).
+Nageru.set_channel_signal(2, 0)
+Nageru.set_channel_signal(3, 1)
+
+-- Set whether a given channel supports setting white balance. (Default is false.)
+Nageru.set_supports_wb(2, true)
+Nageru.set_supports_wb(3, true)
+
+-- These can be set at any time.
Nageru.set_channel_name(SBS_SIGNAL_NUM + 2, "Side-by-side")
Nageru.set_channel_name(STATIC_SIGNAL_NUM + 2, "Static picture")
return num == INPUT0_SIGNAL_NUM or num == INPUT1_SIGNAL_NUM
end
--- API ENTRY POINT
--- Returns, given a channel number, which signal it corresponds to (starting from 0).
--- Should return -1 if the channel does not correspond to a simple signal
--- (one connected to a capture card, or a video input). The information is used for
--- whether right-click on the channel should bring up a context menu or not,
--- typically containing an input selector, resolution menu etc.
---
--- Called once for each channel, at the start of the program.
--- Will never be called for live (0) or preview (1).
-function channel_signal(channel)
- if channel == 2 then
- return 0
- elseif channel == 3 then
- return 1
- else
- return -1
- end
-end
-
-- API ENTRY POINT
-- Called every frame. Returns the color (if any) to paint around the given
-- channel. Returns a CSS color (typically to mark live and preview signals);
return false
end
--- API ENTRY POINT
--- Returns if a given channel supports setting white balance (starting from 2).
--- Called only once for each channel, at the start of the program.
-function supports_set_wb(channel)
- return is_plain_signal(channel - 2)
-end
-
-- API ENTRY POINT
-- Gets called with a new gray point when the white balance is changing.
-- The color is in linear light (not sRGB gamma).
projects / nageru / commitdiff