WIP: YamlEmitter

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

2 files changed, 62 insertions, 0 deletions

diff --git a/include/libcamera/internal/meson.build b/include/libcamera/internal/meson.build
index 1c5eef9c..7533b075 100644
--- a/include/libcamera/internal/meson.build
+++ b/include/libcamera/internal/meson.build
@@ -41,6 +41,7 @@ libcamera_internal_headers = files([
     'v4l2_pixelformat.h',
     'v4l2_subdevice.h',
     'v4l2_videodevice.h',
+    'yaml_emitter.h',
     'yaml_parser.h',
 ])
 
diff --git a/include/libcamera/internal/yaml_emitter.h b/include/libcamera/internal/yaml_emitter.h
new file mode 100644
index 00000000..f8df5265
--- /dev/null
+++ b/include/libcamera/internal/yaml_emitter.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2024, Ideas On Board Oy
+ *
+ * libcamera YAML emitter helper
+ */
+
+#pragma once
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include <libcamera/base/class.h>
+#include <libcamera/base/file.h>
+
+#include <yaml.h>
+
+namespace libcamera {
+
+class File;
+class YamlEvent;
+
+class YamlEmitter final
+{
+public:
+	~YamlEmitter();
+
+	static std::unique_ptr<YamlEmitter> create(std::string &path);
+
+	int emit(std::map<std::string, std::string>);
+	int emit(const std::string &scalar);
+
+private:
+	LIBCAMERA_DISABLE_COPY(YamlEmitter);
+
+	class Emitter
+	{
+	public:
+		Emitter() = default;
+		~Emitter();
+
+		void init(File *file);
+
+		int emit(YamlEvent *event);
+
+	private:
+		void logError();
+
+		yaml_emitter_t emitter_;
+	};
+
+	YamlEmitter() = default;
+
+	void init();
+
+	std::unique_ptr<File> file_;
+	Emitter emitter_;
+};
+
+} /* namespace libcamera */