Putting basic TOT handling into its own class

svn-id: r41821

1 files changed, 101 insertions, 0 deletions

diff --git a/engines/gob/totfile.cpp b/engines/gob/totfile.cpp
new file mode 100644
index 0000000000..b8882ba588
--- /dev/null
+++ b/engines/gob/totfile.cpp
@@ -0,0 +1,101 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "common/str.h"
+#include "common/stream.h"
+
+#include "gob/gob.h"
+#include "gob/totfile.h"
+#include "gob/dataio.h"
+#include "gob/videoplayer.h"
+
+namespace Gob {
+
+TOTFile::TOTFile(GobEngine *vm) : _vm(vm) {
+	_stream = 0;
+
+	memset(_header, 0, 128);
+}
+
+TOTFile::~TOTFile() {
+	unload();
+}
+
+bool TOTFile::load(const Common::String &fileName) {
+	if (_vm->_dataIO->existData(fileName.c_str()))
+		_stream = _vm->_dataIO->getDataStream(fileName.c_str());
+	else
+		_stream = _vm->_vidPlayer->getExtraData(fileName.c_str());
+
+	if (!_stream)
+		return false;
+
+	if (_stream->read(_header, 128) != 128)
+		return false;
+
+	_stream->seek(0);
+
+	return true;
+}
+
+void TOTFile::unload() {
+	delete _stream;
+
+	_stream = 0;
+}
+
+Common::SeekableReadStream *TOTFile::getStream() const {
+	return _stream;
+}
+
+bool TOTFile::getProperties(Properties &props) const {
+	if (!_stream)
+		return false;
+
+	// Offset 39-41: Version in "Major.Minor" string form
+	if (_header[40] != '.')
+		return false;
+
+	props.versionMajor = _header[39] - '0';
+	props.versionMinor = _header[41] - '0';
+
+	props.variablesCount = READ_LE_UINT32(_header + 44);
+
+	props.textsOffset     = READ_LE_UINT32(_header + 48);
+	props.resourcesOffset = READ_LE_UINT32(_header + 52);
+
+	props.animDataSize = READ_LE_UINT16(_header + 56);
+
+	props.imFileNumber   = _header[59];
+	props.exFileNumber   = _header[60];
+	props.communHandling = _header[61];
+
+	for (int i = 0; i < 14; i++)
+		props.functions[i] = READ_LE_UINT16(_header + 100 + i * 2);
+
+	return true;
+}
+
+} // End of namespace Gob