[Scummvm-cvs-logs] SF.net SVN: scummvm:[49253] scummvm/branches/gsoc2010-plugins/backends/ plugins

[toneman1138 at users.sourceforge.net]

Revision: 49253
          http://scummvm.svn.sourceforge.net/scummvm/?rev=49253&view=rev
Author:   toneman1138
Date:     2010-05-26 23:22:45 +0000 (Wed, 26 May 2010)

Log Message:
-----------
minor initial commit for ps2 plugins. Added ps2-provider code

Added Paths:
-----------
    scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/
    scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.cpp
    scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.h

Added: scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.cpp
===================================================================
--- scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.cpp	                        (rev 0)
+++ scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.cpp	2010-05-26 23:22:45 UTC (rev 49253)
@@ -0,0 +1,83 @@
+#if defined(DYNAMIC_MODULES) && defined(__PS2__)
+
+#include "backends/plugins/ps2/ps2-provider.h"
+#include "backends/plugins/dynamic-plugin.h"
+#include "common/fs.h"
+
+#include "backends/platform/ps2/ps2loader.h"
+
+
+class PS2Plugin : public DynamicPlugin {
+protected:
+	void *_dlHandle;
+	Common::String _filename;
+
+	virtual VoidFunc findSymbol(const char *symbol) {
+		void *func = dlsym(_dlHandle, symbol);
+		if (!func)
+			warning("Failed loading symbol '%s' from plugin '%s' (%s)", symbol, _filename.c_str(), dlerror());
+
+		// FIXME HACK: This is a HACK to circumvent a clash between the ISO C++
+		// standard and POSIX: ISO C++ disallows casting between function pointers
+		// and data pointers, but dlsym always returns a void pointer. For details,
+		// see e.g. <http://www.trilithium.com/johan/2004/12/problem-with-dlsym/>.
+		assert(sizeof(VoidFunc) == sizeof(func));
+		VoidFunc tmp;
+		memcpy(&tmp, &func, sizeof(VoidFunc));
+		return tmp;
+	}
+
+public:
+	PS2Plugin(const Common::String &filename)
+		: _dlHandle(0), _filename(filename) {}
+
+	~PS2Plugin() {
+		if (_dlHandle) unloadPlugin();
+	}
+
+	bool loadPlugin() {
+		assert(!_dlHandle);
+		_dlHandle = dlopen(_filename.c_str(), RTLD_LAZY);
+
+		if (!_dlHandle) {
+			warning("Failed loading plugin '%s' (%s)", _filename.c_str(), dlerror());
+			return false;
+		}
+
+		bool ret = DynamicPlugin::loadPlugin();
+
+		if (ret)
+			dlforgetsyms(_dlHandle);
+
+		return ret;
+	}
+
+	void unloadPlugin() {
+		DynamicPlugin::unloadPlugin();
+		if (_dlHandle) {
+			if (dlclose(_dlHandle) != 0)
+				warning("Failed unloading plugin '%s' (%s)", _filename.c_str(), dlerror());
+			_dlHandle = 0;
+		}
+	}
+};
+
+
+Plugin* PS2PluginProvider::createPlugin(const Common::FSNode &node) const {
+	return new PS2Plugin(node.getPath());
+}
+
+bool PS2PluginProvider::isPluginFilename(const Common::FSNode &node) const {
+	// Check the plugin suffix
+	Common::String filename = node.getName();
+	fprintf(stderr, "Testing name %s", filename.c_str());
+	if (!filename.hasSuffix(".PLG") && !filename.hasSuffix(".plg")) {
+		fprintf(stderr," fail.\n");
+		return false;
+	}
+
+	fprintf(stderr," success!\n");
+	return true;
+}
+
+#endif // defined(DYNAMIC_MODULES) && defined(__PS2__)


Property changes on: scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.cpp
___________________________________________________________________
Added: svn:mime-type
   + text/plain
Added: svn:eol-style
   + native

Added: scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.h
===================================================================
--- scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.h	                        (rev 0)
+++ scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.h	2010-05-26 23:22:45 UTC (rev 49253)
@@ -0,0 +1,18 @@
+#ifndef BACKENDS_PLUGINS_PS2_PS2_PROVIDER_H
+#define BACKENDS_PLUGINS_PS2_PS2_PROVIDER_H
+
+#include "base/plugins.h"
+
+#if defined(DYNAMIC_MODULES) && defined(__PS2__)
+
+class PS2PluginProvider : public FilePluginProvider {
+protected:
+	Plugin* createPlugin(const Common::FSNode &node) const;
+
+	bool isPluginFilename(const Common::FSNode &node) const;
+
+};
+
+#endif // defined(DYNAMIC_MODULES) && defined(__PS2__)
+
+#endif /* BACKENDS_PLUGINS_PS2_PS2_PROVIDER_H */


Property changes on: scummvm/branches/gsoc2010-plugins/backends/plugins/ps2/ps2-provider.h
___________________________________________________________________
Added: svn:mime-type
   + text/plain
Added: svn:eol-style
   + native


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