Initial commit

backends/plugins/win32/win32-provider.cpp

@@ -0,0 +1,95 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+ 
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "common/scummsys.h"
+
+#if defined(DYNAMIC_MODULES) && defined(_WIN32)
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <tchar.h>
+
+#include "backends/platform/sdl/win32/win32_wrapper.h"
+#include "backends/plugins/win32/win32-provider.h"
+#include "backends/plugins/dynamic-plugin.h"
+#include "common/debug.h"
+#include "common/fs.h"
+
+class Win32Plugin final : public DynamicPlugin {
+protected:
+	void *_dlHandle;
+
+	VoidFunc findSymbol(const char *symbol) override {
+		FARPROC func = GetProcAddress((HMODULE)_dlHandle, symbol);
+		if (!func)
+			debug("Failed loading symbol '%s' from plugin '%s'", symbol, _filename.toString(Common::Path::kNativeSeparator).c_str());
+
+		return (void (*)())func;
+	}
+
+public:
+	Win32Plugin(const Common::Path &filename)
+		: DynamicPlugin(filename), _dlHandle(0) {}
+
+	bool loadPlugin() override {
+		assert(!_dlHandle);
+		TCHAR *tFilename = Win32::stringToTchar(_filename.toString(Common::Path::kNativeSeparator));
+		_dlHandle = LoadLibrary(tFilename);
+		free(tFilename);
+
+		if (!_dlHandle) {
+			warning("Failed loading plugin '%s' (error code %d)", _filename.toString(Common::Path::kNativeSeparator).c_str(), (int32) GetLastError());
+			return false;
+		} else {
+			debug(1, "Success loading plugin '%s', handle %p", _filename.toString(Common::Path::kNativeSeparator).c_str(), _dlHandle);
+		}
+
+		return DynamicPlugin::loadPlugin();
+	}
+
+	void unloadPlugin() override {
+		DynamicPlugin::unloadPlugin();
+		if (_dlHandle) {
+			if (!FreeLibrary((HMODULE)_dlHandle))
+				warning("Failed unloading plugin '%s'", _filename.toString(Common::Path::kNativeSeparator).c_str());
+			else
+				debug(1, "Success unloading plugin '%s'", _filename.toString(Common::Path::kNativeSeparator).c_str());
+			_dlHandle = 0;
+		}
+	}
+};
+
+
+Plugin* Win32PluginProvider::createPlugin(const Common::FSNode &node) const {
+	return new Win32Plugin(node.getPath());
+}
+
+bool Win32PluginProvider::isPluginFilename(const Common::FSNode &node) const {
+	// Check the plugin suffix
+	Common::String filename = node.getName();
+	return filename.hasSuffix(".dll");
+}
+
+
+#endif // defined(DYNAMIC_MODULES) && defined(_WIN32)

backends/plugins/win32/win32-provider.h

@@ -0,0 +1,38 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef BACKENDS_PLUGINS_WIN32_H
+#define BACKENDS_PLUGINS_WIN32_H
+
+#include "base/plugins.h"
+
+#if defined(DYNAMIC_MODULES) && defined(_WIN32)
+
+class Win32PluginProvider final : public FilePluginProvider {
+protected:
+	Plugin* createPlugin(const Common::FSNode &node) const override;
+
+	bool isPluginFilename(const Common::FSNode &node) const override;
+};
+
+#endif // defined(DYNAMIC_MODULES) && defined(_WIN32)
+
+#endif