image inlining working

src/media_meta_info_loader.cpp

@@ -0,0 +1,84 @@
+#include "./media_meta_info_loader.hpp"
+
+#include "./image_loader_webp.hpp"
+#include "./image_loader_sdl_bmp.hpp"
+#include "./image_loader_stb.hpp"
+
+#include <solanaceae/message3/components.hpp>
+
+#include <fstream>
+#include <iostream>
+
+MediaMetaInfoLoader::MediaMetaInfoLoader(RegistryMessageModel& rmm) : _rmm(rmm) {
+	// HACK: make them be added externally?
+	_image_loaders.push_back(std::make_unique<ImageLoaderWebP>());
+	_image_loaders.push_back(std::make_unique<ImageLoaderSDLBMP>());
+	_image_loaders.push_back(std::make_unique<ImageLoaderSTB>());
+
+	_rmm.subscribe(this, RegistryMessageModel_Event::message_construct);
+	_rmm.subscribe(this, RegistryMessageModel_Event::message_updated);
+}
+
+MediaMetaInfoLoader::~MediaMetaInfoLoader(void) {
+}
+
+bool MediaMetaInfoLoader::onEvent(const Message::Events::MessageConstruct& e) {
+	return false;
+}
+
+bool MediaMetaInfoLoader::onEvent(const Message::Events::MessageUpdated& e) {
+	if (e.e.any_of<Message::Components::TagNotImage, Message::Components::FrameDims>()) {
+		return false;
+	}
+
+	if (!e.e.all_of<Message::Components::Transfer::FileInfoLocal, Message::Components::Transfer::TagHaveAll>()) {
+		return false;
+	}
+
+	const auto& fil = e.e.get<Message::Components::Transfer::FileInfoLocal>();
+	if (fil.file_list.size() != 1) {
+		return false;
+	}
+
+	std::ifstream file(fil.file_list.front(), std::ios::binary);
+	if (file.is_open()) {
+		std::vector<uint8_t> tmp_buffer;
+		while (file.good()) {
+			auto ch = file.get();
+			if (ch == EOF) {
+				break;
+			} else {
+				tmp_buffer.push_back(ch);
+			}
+		}
+
+		bool could_load {false};
+		// try all loaders after another
+		for (auto& il : _image_loaders) {
+			auto res = il->loadInfoFromMemory(tmp_buffer.data(), tmp_buffer.size());
+			if (res.height == 0 || res.width == 0) {
+				continue;
+			}
+
+			e.e.emplace<Message::Components::FrameDims>(res.width, res.height);
+
+			could_load = true;
+
+			std::cout << "MMIL loaded image info " << fil.file_list.front() << "\n";
+
+			_rmm.throwEventUpdate(e.e);
+			break;
+		}
+
+		if (!could_load) {
+			e.e.emplace<Message::Components::TagNotImage>();
+
+			std::cout << "MMIL loading failed image info " << fil.file_list.front() << "\n";
+
+			_rmm.throwEventUpdate(e.e);
+		}
+	}
+
+	return false;
+}
+