frontend: Migrate frontend plugins

frontend/plugins/decklink-captions/decklink-captions.cpp

@@ -0,0 +1,150 @@
+#include <obs-frontend-api.h>
+#include <QMainWindow>
+#include <QAction>
+#include <obs.hpp>
+#include "decklink-captions.h"
+
+OBS_DECLARE_MODULE()
+OBS_MODULE_USE_DEFAULT_LOCALE("decklink-captons", "en-US")
+
+struct obs_captions {
+	std::string source_name;
+	OBSWeakSource source;
+
+	void start();
+	void stop();
+
+	obs_captions();
+	inline ~obs_captions() { stop(); }
+};
+
+obs_captions::obs_captions() {}
+
+static obs_captions *captions = nullptr;
+
+DecklinkCaptionsUI::DecklinkCaptionsUI(QWidget *parent) : QDialog(parent), ui(new Ui_CaptionsDialog)
+{
+	ui->setupUi(this);
+
+	setSizeGripEnabled(true);
+
+	setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
+
+	auto cb = [this](obs_source_t *source) {
+		uint32_t caps = obs_source_get_output_flags(source);
+		QString name = obs_source_get_name(source);
+
+		if (caps & OBS_SOURCE_CEA_708)
+			ui->source->addItem(name);
+
+		OBSWeakSource weak = OBSGetWeakRef(source);
+		if (weak == captions->source)
+			ui->source->setCurrentText(name);
+		return true;
+	};
+
+	using cb_t = decltype(cb);
+
+	ui->source->blockSignals(true);
+	ui->source->addItem(QStringLiteral(""));
+	ui->source->setCurrentIndex(0);
+	obs_enum_sources([](void *data, obs_source_t *source) { return (*static_cast<cb_t *>(data))(source); }, &cb);
+	ui->source->blockSignals(false);
+}
+
+void DecklinkCaptionsUI::on_source_currentIndexChanged(int)
+{
+	captions->stop();
+
+	captions->source_name = ui->source->currentText().toUtf8().constData();
+	captions->source = GetWeakSourceByName(captions->source_name.c_str());
+
+	captions->start();
+}
+
+static void caption_callback(void * /* param */, obs_source_t * /* source */, const struct obs_source_cea_708 *captions)
+{
+	obs_output *output = obs_frontend_get_streaming_output();
+	if (output) {
+		if (obs_frontend_streaming_active() && obs_output_active(output)) {
+			obs_output_caption(output, captions);
+		}
+		obs_output_release(output);
+	}
+}
+
+void obs_captions::start()
+{
+	OBSSource s = OBSGetStrongRef(source);
+	if (!s) {
+		//warn("Source invalid");
+		return;
+	}
+	obs_source_add_caption_callback(s, caption_callback, nullptr);
+}
+
+void obs_captions::stop()
+{
+	OBSSource s = OBSGetStrongRef(source);
+	if (s)
+		obs_source_remove_caption_callback(s, caption_callback, nullptr);
+}
+
+static void save_decklink_caption_data(obs_data_t *save_data, bool saving, void *)
+{
+	if (saving) {
+		obs_data_t *obj = obs_data_create();
+
+		obs_data_set_string(obj, "source", captions->source_name.c_str());
+
+		obs_data_set_obj(save_data, "decklink_captions", obj);
+		obs_data_release(obj);
+	} else {
+		captions->stop();
+
+		obs_data_t *obj = obs_data_get_obj(save_data, "decklink_captions");
+		if (!obj)
+			obj = obs_data_create();
+
+		captions->source_name = obs_data_get_string(obj, "source");
+		captions->source = GetWeakSourceByName(captions->source_name.c_str());
+		obs_data_release(obj);
+
+		captions->start();
+	}
+}
+
+void addOutputUI(void)
+{
+	QAction *action = (QAction *)obs_frontend_add_tools_menu_qaction(obs_module_text("Decklink Captions"));
+
+	captions = new obs_captions;
+
+	auto cb = []() {
+		obs_frontend_push_ui_translation(obs_module_get_string);
+
+		QWidget *window = (QWidget *)obs_frontend_get_main_window();
+
+		DecklinkCaptionsUI dialog(window);
+		dialog.exec();
+
+		obs_frontend_pop_ui_translation();
+	};
+
+	obs_frontend_add_save_callback(save_decklink_caption_data, nullptr);
+
+	action->connect(action, &QAction::triggered, cb);
+}
+
+bool obs_module_load(void)
+{
+	return true;
+}
+
+void obs_module_post_load(void)
+{
+	if (!obs_get_module("decklink"))
+		return;
+
+	addOutputUI();
+}