Limit image loading to one thread in async image loader

1 files changed, 10 insertions, 2 deletions

diff --git a/include/AsyncImageLoader.hpp b/include/AsyncImageLoader.hpp
index 94b225d..7556fbc 100644
--- a/include/AsyncImageLoader.hpp
+++ b/include/AsyncImageLoader.hpp
@@ -15,6 +15,7 @@ namespace QuickMedia {
     enum class LoadingState {
         NOT_LOADED,
         LOADING,
+        READY_TO_LOAD,
         FINISHED_LOADING,
         APPLIED_TO_TEXTURE
     };
@@ -24,6 +25,7 @@ namespace QuickMedia {
         sf::Texture texture;
         std::unique_ptr<sf::Image> image; // Set in another thread. This should be .reset after loading it into |texture|, to save memory
         size_t counter = 0;
+        Path thumbnail_path;
     };
 
     struct ThumbnailLoadData {
@@ -70,19 +72,25 @@ namespace QuickMedia {
 
         // set |resize_target_size| to {0, 0} to disable resizing.
         // Note: this method is not thread-safe
-        void load_thumbnail(const std::string &url, bool local, sf::Vector2i resize_target_size, std::shared_ptr<ThumbnailData> thumbnail_data);
+        bool load_thumbnail(const std::string &url, bool local, sf::Vector2i resize_target_size, std::shared_ptr<ThumbnailData> thumbnail_data, Path &thumbnail_path);
 
         // Returns -1 if all threads are busy
         int get_free_load_index() const;
 
+        void load_create_thumbnail(const Path &thumbnail_path, const Path &thumbnail_path_resized, ThumbnailData *thumbnail_data, sf::Vector2i resize_target_size);
+        void process_thumbnail(ThumbnailLoadData &thumbnail_load_data);
+    private:
         void reset_download(Download &download);
     private:
         std::mutex download_mutex;
         // TODO: Use curl single-threaded multi-download feature instead
         Download downloads[NUM_IMAGE_LOAD_PARALLEL];
         AsyncTask<void> load_thread;
-        MessageQueue<ThumbnailLoadData> image_load_queue;
+        MessageQueue<ThumbnailLoadData> image_thumbnail_create_queue;
         std::unordered_map<std::string, std::shared_ptr<ThumbnailData>> thumbnails;
         size_t counter = 0;
+
+        std::mutex image_load_mutex;
+        ThumbnailLoadData current_loading_image;
     };
 }