Add support to Nageru for reading the subtitles from FFmpeg streams.

[nageru] / nageru / theme.cpp

diff --git a/nageru/theme.cpp b/nageru/theme.cpp
index 386a425fd024be011e1d4591f05b655db92007c8..ead38fa819e877fceee43ec32cf4aa52a183dc92 100644 (file)
--- a/nageru/theme.cpp
+++ b/nageru/theme.cpp
@@ -72,6 +72,8 @@ struct InputStateInfo {
        unsigned last_width[MAX_VIDEO_CARDS], last_height[MAX_VIDEO_CARDS];
        bool last_interlaced[MAX_VIDEO_CARDS], last_has_signal[MAX_VIDEO_CARDS], last_is_connected[MAX_VIDEO_CARDS];
        unsigned last_frame_rate_nom[MAX_VIDEO_CARDS], last_frame_rate_den[MAX_VIDEO_CARDS];
+       bool has_last_subtitle[MAX_VIDEO_CARDS];
+       std::string last_subtitle[MAX_VIDEO_CARDS];
 };
 
 InputStateInfo::InputStateInfo(const InputState &input_state)
@@ -93,6 +95,8 @@ InputStateInfo::InputStateInfo(const InputState &input_state)
                last_is_connected[signal_num] = userdata->last_is_connected;
                last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
                last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
+               has_last_subtitle[signal_num] = userdata->has_last_subtitle;
+               last_subtitle[signal_num] = userdata->last_subtitle;
        }
 }
 
@@ -634,6 +638,20 @@ int InputStateInfo_get_frame_rate_den(lua_State* L)
        return 1;
 }
 
+int InputStateInfo_get_last_subtitle(lua_State* L)
+{
+       assert(lua_gettop(L) == 2);
+       InputStateInfo *input_state_info = get_input_state_info(L, 1);
+       Theme *theme = get_theme_updata(L);
+       int signal_num = theme->map_signal(luaL_checknumber(L, 2));
+       if (!input_state_info->has_last_subtitle[signal_num]) {
+               lua_pushnil(L);
+       } else {
+               lua_pushstring(L, input_state_info->last_subtitle[signal_num].c_str());
+       }
+       return 1;
+}
+
 int Effect_set_float(lua_State *L)
 {
        assert(lua_gettop(L) == 3);
@@ -829,6 +847,7 @@ const luaL_Reg InputStateInfo_funcs[] = {
        { "get_is_connected", InputStateInfo_get_is_connected },
        { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
        { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
+       { "get_last_subtitle", InputStateInfo_get_last_subtitle },
        { NULL, NULL }
 };