[feat] write and load thumbnails supported

src/single_window/thumbnail.h

@@ -0,0 +1,40 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2024-11-07
+ * Copyright (c) 2024 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _THUMBNAIL_H_
+#define _THUMBNAIL_H_
+
+#include <SDL.h>
+
+#include <filesystem>
+#include <map>
+
+class Thumbnail {
+ public:
+  Thumbnail();
+  ~Thumbnail();
+
+ public:
+  int SaveToThumbnail(const char* yuv420p, int width, int height,
+                      const std::string& host_name,
+                      const std::string& remote_id);
+
+  int LoadThumbnail(SDL_Renderer* renderer, SDL_Texture** texture, int* width,
+                    int* height);
+
+ private:
+  std::vector<std::filesystem::path> FindThumbnailPath(
+      const std::filesystem::path& directory);
+
+ private:
+  int thumbnail_width_ = 160;
+  int thumbnail_height_ = 90;
+  char* rgba_buffer_ = nullptr;
+  std::string image_path_ = "thumbnails";
+  std::map<std::time_t, std::filesystem::path> thumbnails_sorted_by_write_time_;
+};
+
+#endif