Initial commit

engines/mtropolis/plugin/midi_data.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 "mtropolis/plugin/midi.h"
+#include "mtropolis/plugin/midi_data.h"
+
+namespace MTropolis {
+
+namespace Data {
+
+namespace Midi {
+
+MidiModifier::MidiModifier() : embeddedFlag(0) {
+	memset(&this->modeSpecific, 0, sizeof(this->modeSpecific));
+}
+
+DataReadErrorCode MidiModifier::load(PlugIn &plugIn, const PlugInModifier &prefix, DataReader &reader) {
+	if (prefix.plugInRevision != 1 && prefix.plugInRevision != 2)
+		return kDataReadErrorUnsupportedRevision;
+
+	if (!executeWhen.load(reader) || !terminateWhen.load(reader) || !reader.readU8(embeddedFlag))
+		return kDataReadErrorReadFailed;
+
+	if (embeddedFlag) {
+		if (!reader.readU8(modeSpecific.embedded.hasFile))
+			return kDataReadErrorReadFailed;
+		if (modeSpecific.embedded.hasFile) {
+			embeddedFile = Common::SharedPtr<EmbeddedFile>(new EmbeddedFile());
+
+			uint8 bigEndianLength[4];
+			if (!reader.readBytes(bigEndianLength))
+				return kDataReadErrorReadFailed;
+
+			uint32 length = (bigEndianLength[0] << 24) + (bigEndianLength[1] << 16) + (bigEndianLength[2] << 8) + bigEndianLength[3];
+
+			embeddedFile->contents.resize(length);
+			if (length > 0 && !reader.read(&embeddedFile->contents[0], length))
+				return kDataReadErrorReadFailed;
+		}
+
+		if (!reader.readU8(modeSpecific.embedded.loop) || !reader.readU8(modeSpecific.embedded.overrideTempo) || !reader.readU8(modeSpecific.embedded.volume) || !embeddedTempo.load(reader) || !embeddedFadeIn.load(reader) || !embeddedFadeOut.load(reader))
+			return kDataReadErrorReadFailed;
+	} else {
+		if (!reader.readU8(modeSpecific.singleNote.channel) || !reader.readU8(modeSpecific.singleNote.note) || !reader.readU8(modeSpecific.singleNote.velocity) || !reader.readU8(modeSpecific.singleNote.program) || !singleNoteDuration.load(reader))
+			return kDataReadErrorReadFailed;
+	}
+
+	return kDataReadErrorNone;
+}
+
+} // End of namespace Midi
+
+} // End of namespace Data
+
+} // End of namespace MTropolis