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engines/mm/mm1/gfx/dta.cpp

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+/* 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/>.
+ *
+ */
+
+#include "common/file.h"
+#include "mm/mm1/gfx/dta.h"
+#include "mm/mm1/gfx/screen_decoder.h"
+
+namespace MM {
+namespace MM1 {
+namespace Gfx {
+
+Common::SeekableReadStream *DTA::load(uint entryIndex) {
+	Common::File f;
+
+	if (!f.open(_fname))
+		error("Could not open - %s", _fname.toString().c_str());
+
+	uint indexSize = f.readUint16LE();
+	assert(entryIndex < (indexSize / 4));
+	f.seek(entryIndex * 4, SEEK_CUR);
+	size_t entryOffset = f.readUint32LE();
+	size_t nextOffset = (entryIndex == (indexSize / 4 - 1)) ?
+		f.size() : f.readUint32LE();
+
+	f.seek(2 + indexSize + entryOffset);
+	return f.readStream(nextOffset - entryOffset);
+}
+
+} // namespace Gfx
+} // namespace MM1
+} // namespace MM