Initial commit

engines/stark/savemetadata.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 "engines/stark/savemetadata.h"
+
+#include "engines/stark/gfx/driver.h"
+#include "engines/stark/services/stateprovider.h"
+#include "engines/stark/services/userinterface.h"
+
+#include "graphics/surface.h"
+
+namespace Stark {
+
+SaveMetadata::SaveMetadata() :
+		_readErrorCode(Common::kNoError),
+		levelIndex(0),
+		locationIndex(0),
+		version(0),
+		totalPlayTime(0),
+		saveYear(0),
+		saveMonth(0),
+		saveDay(0),
+		saveHour(0),
+		saveMinute(0),
+		saveSecond(0),
+		isAutoSave(false),
+		gameWindowThumbnail(nullptr) {
+}
+
+void SaveMetadata::saveLoad(ResourceSerializer *s) {
+	s->syncAsString32(description);
+	syncResourceIndexAsString(s, levelIndex);
+	syncResourceIndexAsString(s, locationIndex);
+	_readErrorCode = syncVersion(s);
+
+	if (_readErrorCode != Common::kNoError) {
+		return;
+	}
+
+	if (version >= 9) {
+		s->syncAsByte(saveDay);
+		s->syncAsByte(saveMonth);
+		s->syncAsUint16BE(saveYear);
+		s->syncAsByte(saveHour);
+		s->syncAsByte(saveMinute);
+		s->syncAsSint32LE(totalPlayTime);
+	}
+
+	if (version >= 10) {
+		s->syncAsByte(saveSecond);
+	}
+
+	if (version >= 13) {
+		s->syncAsUint32LE(isAutoSave);
+	}
+}
+
+Common::ErrorCode SaveMetadata::read(Common::SeekableReadStream *stream, const Common::String &filename) {
+	_readFilename = filename;
+	ResourceSerializer s(stream, nullptr, 0);
+	saveLoad(&s);
+	return _readErrorCode;
+}
+
+void SaveMetadata::write(Common::WriteStream *stream) {
+	ResourceSerializer s(nullptr, stream, 0);
+	saveLoad(&s);
+}
+
+void SaveMetadata::syncResourceIndexAsString(ResourceSerializer *s, uint &index) {
+	Common::String indexRaw = Common::String::format("%02x", index);
+	s->syncAsString32(indexRaw);
+	if (s->isLoading()) {
+		index = strtol(indexRaw.c_str(), nullptr, 16);
+	}
+}
+
+Common::ErrorCode SaveMetadata::syncVersion(ResourceSerializer *s) {
+	Common::String versionRaw = Common::String::format("Version:\t%02d", version);
+	s->syncAsString32(versionRaw);
+
+	if (s->isLoading()) {
+		if (!versionRaw.hasPrefix("Version:\t")) {
+			warning("The save file '%s' does not match the expected format", _readFilename.c_str());
+			return Common::kReadingFailed;
+		}
+
+		version = atoi(&(versionRaw.c_str()[8]));
+		if (version < StateProvider::kMinSaveVersion || version > StateProvider::kSaveVersion) {
+			warning("The save file '%s' version (v%d) is not supported by this version of ScummVM. Only versions v%d to v%d are allowed.",
+			        _readFilename.c_str(), version, StateProvider::kMinSaveVersion, StateProvider::kSaveVersion);
+			return Common::kReadingFailed;
+		}
+	}
+
+	return Common::kNoError;
+}
+
+void SaveMetadata::setSaveTime(const TimeDate &timeDate) {
+	saveDay = timeDate.tm_mday;
+	saveMonth = timeDate.tm_mon + 1;
+	saveYear = timeDate.tm_year + 1900;
+	saveHour = timeDate.tm_hour;
+	saveMinute = timeDate.tm_min;
+	saveSecond = timeDate.tm_sec;
+}
+
+void SaveMetadata::writeGameScreenThumbnail(Common::WriteStream *stream) {
+	assert(gameWindowThumbnail);
+	assert(gameWindowThumbnail->pitch * gameWindowThumbnail->h == kThumbnailSize);
+
+	stream->write((const byte *)gameWindowThumbnail->getPixels(), kThumbnailSize);
+}
+
+void SaveMetadata::skipGameScreenThumbnail(Common::SeekableReadStream *stream) {
+	stream->skip(kThumbnailSize);
+}
+
+Graphics::Surface *SaveMetadata::readGameScreenThumbnail(Common::SeekableReadStream *stream) {
+	Graphics::Surface *thumb = new Graphics::Surface();
+	thumb->create(kThumbnailWidth, kThumbnailHeight, Gfx::Driver::getRGBAPixelFormat());
+
+	stream->read(thumb->getPixels(), kThumbnailSize);
+
+	return thumb;
+}
+
+} // End of namespace Stark