BLADERUNNER: Start port to scummvm engine

Just shows the splash for now. VQA decoder partially ported but without
audio and some minor special features.

engines/bladerunner/archive.cpp

@@ -0,0 +1,158 @@
+/* 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.
+ *
+ */
+
+#include "bladerunner/archive.h"
+
+#include "common/debug.h"
+
+namespace BladeRunner {
+
+MIXArchive::MIXArchive() {
+}
+
+MIXArchive::~MIXArchive() {
+	if (_fd.isOpen())
+		debug("~MIXArchive: fd not closed: %s", _fd.getName());
+}
+
+bool MIXArchive::open(const Common::String &filename) {
+	if (!_fd.open(filename)) {
+		debug("MIXArchive::open(): Could not open %s", filename.c_str());
+		return false;
+	}
+
+	_isTLK = filename.hasSuffix(".TLK");
+
+	_entry_count = _fd.readUint16LE();
+	_size        = _fd.readUint32LE();
+
+	_entries.resize(_entry_count);
+	for (uint16 i = 0; i != _entry_count; ++i) {
+		_entries[i].id     = _fd.readSint32LE();
+		_entries[i].offset = _fd.readUint32LE();
+		_entries[i].length = _fd.readUint32LE();
+
+		if (false)
+			debug("%08x %-12d %-12d", _entries[i].id, _entries[i].offset, _entries[i].length);
+
+		// Verify that the entries are sorted by id. Note that id is signed.
+		if (i > 0)
+			assert(_entries[i].id > _entries[i - 1].id);
+	}
+
+	if (_fd.err()) {
+		error("MIXArchive::open(): Error reading entries in %s", filename.c_str());
+		_fd.close();
+		return false;
+	}
+
+	debug("MIXArchive::open: Opened archive %s", filename.c_str());
+
+	return true;
+}
+
+void MIXArchive::close() {
+	return _fd.close();
+}
+
+bool MIXArchive::isOpen() const {
+	return _fd.isOpen();
+}
+
+#define ROL(n) ((n << 1) | ((n >> 31) & 1))
+
+static
+int32 mix_id(const Common::String &name) {
+	char buffer[12] = { 0 };
+
+	for (uint i = 0; i != name.size() && i < 12u; ++i)
+		buffer[i] = (char)toupper(name[i]);
+
+	uint32 id = 0;
+	for (int i = 0; i < 12 && buffer[i]; i += 4)
+	{
+		uint32 t = (uint32)buffer[i + 3] << 24
+		         | (uint32)buffer[i + 2] << 16
+		         | (uint32)buffer[i + 1] <<  8
+		         | (uint32)buffer[i + 0];
+
+		id = ROL(id) + t;
+	}
+
+	return reinterpret_cast<int32&>(id);
+}
+
+static
+int32 tlk_id(const Common::String &name) {
+	char buffer[12] = { 0 };
+
+	for (uint i = 0; i != name.size() && i < 12u; ++i)
+		buffer[i] = (char)toupper(name[i]);
+
+	int actor_id  =   10 * (name[0] - '0') +
+	                       (name[1] - '0');
+
+	int speech_id = 1000 * (name[3] - '0') +
+	                 100 * (name[4] - '0') +
+	                  10 * (name[5] - '0') +
+	                       (name[6] - '0');
+
+	return 10000 * actor_id + speech_id;
+}
+
+uint32 MIXArchive::indexForId(int32 id) const {
+	uint32 lo = 0, hi = _entry_count;
+
+	while (lo < hi)
+	{
+		uint32 mid = lo + (hi - lo) / 2;
+
+		if (id > _entries[mid].id)
+			lo = mid + 1;
+		else if (id < _entries[mid].id)
+			hi = mid;
+		else
+			return mid;
+	}
+	return _entry_count;
+}
+
+Common::SeekableReadStream *MIXArchive::createReadStreamForMember(const Common::String &name) {
+	int32 id;
+
+	if (_isTLK)
+		id = tlk_id(name);
+	else
+		id = mix_id(name);
+
+	uint32 i = indexForId(id);
+
+	if (i == _entry_count)
+		return NULL;
+
+	uint32 start = _entries[i].offset + 6 + 12 * _entry_count;
+	uint32 end   = _entries[i].length + start;
+
+	return new Common::SafeSeekableSubReadStream(&_fd, start, end, DisposeAfterUse::NO);
+}
+
+} // End of namespace BladeRunner

engines/bladerunner/archive.h

@@ -0,0 +1,65 @@
+/* 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.
+ *
+ */
+
+#ifndef BLADERUNNER_ARCHIVE_H
+#define BLADERUNNER_ARCHIVE_H
+
+#include "common/array.h"
+#include "common/file.h"
+#include "common/substream.h"
+
+namespace BladeRunner {
+
+class MIXArchive {
+public:
+	MIXArchive();
+	~MIXArchive();
+
+	bool open(const Common::String &filename);
+	void close();
+	bool isOpen() const;
+
+	Common::String getName() { return _fd.getName(); }
+
+	Common::SeekableReadStream *createReadStreamForMember(const Common::String &name);
+
+private:
+	Common::File _fd;
+	bool _isTLK;
+
+	uint16 _entry_count;
+	uint32 _size;
+
+	struct ArchiveEntry {
+		int32  id;
+		uint32 offset;
+		uint32 length;
+	};
+
+	Common::Array<ArchiveEntry> _entries;
+
+	uint32 indexForId(int32 id) const;
+};
+
+} // End of namespace BladeRunner
+
+#endif