X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Ftheme.cpp;h=8050003b2025459651d20a99dea5f4d120347da3;hb=2ba69dc78d091ad92427389147365f39760e0b1f;hp=c881dc6891be2b1a32e90fb1b3fb8ec3b043f515;hpb=f8da8feaff269b75480625e1384951c20c3a529d;p=nageru

diff --git a/nageru/theme.cpp b/nageru/theme.cpp
index c881dc6..8050003 100644
--- a/nageru/theme.cpp
+++ b/nageru/theme.cpp
@@ -700,6 +700,69 @@ int InputStateInfo_get_last_subtitle(lua_State* L)
 	return 1;
 }
 
+namespace {
+
+// Helper function to write e.g. “60” or “59.94”.
+string format_frame_rate(int nom, int den)
+{
+	char buf[256];
+	if (nom % den == 0) {
+		snprintf(buf, sizeof(buf), "%d", nom / den);
+	} else {
+		snprintf(buf, sizeof(buf), "%.2f", double(nom) / den);
+	}
+	return buf;
+}
+
+// Helper function to write e.g. “720p60”.
+string get_human_readable_resolution(const InputStateInfo *input_state_info, int signal_num)
+{
+	char buf[256];
+	if (input_state_info->last_interlaced[signal_num]) {
+		snprintf(buf, sizeof(buf), "%di", input_state_info->last_height[signal_num] * 2);
+
+		// Show field rate instead of frame rate; really for cosmetics only
+		// (and actually contrary to EBU recommendations, although in line
+		// with typical user expectations).
+		return buf + format_frame_rate(input_state_info->last_frame_rate_nom[signal_num] * 2,
+			input_state_info->last_frame_rate_den[signal_num]);
+	} else {
+		snprintf(buf, sizeof(buf), "%dp", input_state_info->last_height[signal_num]);
+		return buf + format_frame_rate(input_state_info->last_frame_rate_nom[signal_num],
+			input_state_info->last_frame_rate_den[signal_num]);
+	}
+}
+
+} // namespace
+
+int InputStateInfo_get_human_readable_resolution(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));
+
+	string str;
+	if (!input_state_info->last_is_connected[signal_num]) {
+		str = "disconnected";
+	} else if (input_state_info->last_height[signal_num]) {
+		str = "no signal";
+	} else if (!input_state_info->last_has_signal[signal_num]) {
+		if (input_state_info->last_height[signal_num]) {
+			// Special mode for the USB3 cards.
+			str = "no signal";
+		} else {
+			str = get_human_readable_resolution(input_state_info, signal_num) + ", no signal";
+		}
+	} else {
+		str = get_human_readable_resolution(input_state_info, signal_num);
+	}
+
+	lua_pushstring(L, str.c_str());
+	return 1;
+}
+
+
 int EffectBlueprint_set_int(lua_State *L)
 {
 	assert(lua_gettop(L) == 3);
@@ -921,6 +984,7 @@ const luaL_Reg InputStateInfo_funcs[] = {
 	{ "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 },
+	{ "get_human_readable_resolution", InputStateInfo_get_human_readable_resolution },
 	{ NULL, NULL }
 };