UI,obs-transitions: Enable missing files dialog for stinger transition

Adds transitions to the missing files check, allowing for stinger
transitions to be shown in the dialog

UI/window-basic-main-transitions.cpp

@@ -1791,7 +1791,8 @@ obs_data_array_t *OBSBasic::SaveTransitions()
 	return transitions;
 }
 
-void OBSBasic::LoadTransitions(obs_data_array_t *transitions)
+void OBSBasic::LoadTransitions(obs_data_array_t *transitions,
+			       obs_load_source_cb cb, void *private_data)
 {
 	size_t count = obs_data_array_count(transitions);
 
@@ -1806,6 +1807,8 @@ void OBSBasic::LoadTransitions(obs_data_array_t *transitions)
 		if (!obs_obj_invalid(source)) {
 			InitTransition(source);
 			AddTransitionBeforeSeparator(QT_UTF8(name), source);
+			if (cb)
+				cb(private_data, source);
 		}
 
 		obs_data_release(settings);

UI/window-basic-main.cpp

@@ -1047,7 +1047,7 @@ void OBSBasic::LoadData(obs_data_t *data, const char *file)
 	obs_load_sources(sources, cb, files);
 
 	if (transitions)
-		LoadTransitions(transitions);
+		LoadTransitions(transitions, cb, files);
 	if (sceneOrder)
 		LoadSceneListOrder(sceneOrder);
 

UI/window-basic-main.hpp

@@ -404,7 +404,8 @@ private:
 	obs_source_t *FindTransition(const char *name);
 	OBSSource GetCurrentTransition();
 	obs_data_array_t *SaveTransitions();
-	void LoadTransitions(obs_data_array_t *transitions);
+	void LoadTransitions(obs_data_array_t *transitions,
+			     obs_load_source_cb cb, void *private_data);
 
 	obs_source_t *fadeTransition;
 	obs_source_t *cutTransition;

plugins/obs-transitions/transition-stinger.c

@@ -1,5 +1,6 @@
 #include <obs-module.h>
 #include <util/dstr.h>
+#include "util/platform.h"
 
 #define TIMING_TIME 0
 #define TIMING_FRAME 1
@@ -729,6 +730,60 @@ static obs_properties_t *stinger_properties(void *data)
 	return ppts;
 }
 
+static void missing_file_callback(void *src, const char *new_path, void *data)
+{
+	struct stinger_info *s = src;
+	obs_data_t *settings = obs_source_get_settings(s->source);
+
+	const char *type = data;
+
+	if (strcmp(type, "media_source") == 0) {
+		obs_data_set_string(settings, "path", new_path);
+	} else if (strcmp(type, "matte_source") == 0) {
+		obs_data_set_string(settings, "track_matte_path", new_path);
+	}
+
+	obs_source_update(s->source, settings);
+	obs_data_release(settings);
+}
+
+static obs_missing_files_t *stinger_missing_files(void *data)
+{
+	struct stinger_info *s = data;
+	obs_data_t *settings = obs_source_get_settings(s->source);
+	obs_missing_files_t *files = obs_missing_files_create();
+
+	const char *path = obs_data_get_string(settings, "path");
+
+	if (strcmp(path, "") != 0) {
+		if (!os_file_exists(path)) {
+			obs_missing_file_t *file = obs_missing_file_create(
+				path, missing_file_callback,
+				OBS_MISSING_FILE_SOURCE, s->source,
+				(void *)"media_source");
+
+			obs_missing_files_add_file(files, file);
+		}
+	}
+
+	const char *track_matte_path =
+		obs_data_get_string(settings, "track_matte_path");
+
+	if (strcmp(track_matte_path, "") != 0) {
+		if (!os_file_exists(track_matte_path)) {
+			obs_missing_file_t *file = obs_missing_file_create(
+				track_matte_path, missing_file_callback,
+				OBS_MISSING_FILE_SOURCE, s->source,
+				(void *)"matte_source");
+
+			obs_missing_files_add_file(files, file);
+		}
+	}
+
+	obs_data_release(settings);
+	return files;
+}
+
 struct obs_source_info stinger_transition = {
 	.id = "obs_stinger_transition",
 	.type = OBS_SOURCE_TYPE_TRANSITION,
@@ -740,6 +795,7 @@ struct obs_source_info stinger_transition = {
 	.video_render = stinger_video_render,
 	.video_tick = stinger_video_tick,
 	.audio_render = stinger_audio_render,
+	.missing_files = stinger_missing_files,
 	.get_properties = stinger_properties,
 	.enum_active_sources = stinger_enum_active_sources,
 	.enum_all_sources = stinger_enum_all_sources,