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engines/crab/music/musicparam.h

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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/>.
+ *
+ */
+
+/*
+ * This code is based on the CRAB engine
+ *
+ * Copyright (c) Arvind Raja Yadav
+ *
+ * Licensed under MIT
+ *
+ */
+
+#ifndef CRAB_MUSICPARAM_H
+#define CRAB_MUSICPARAM_H
+#include "audio/audiostream.h"
+#include "audio/decoders/vorbis.h"
+#include "common/file.h"
+#include "crab/loaders.h"
+#include "crab/filesystem.h"
+
+namespace Crab {
+
+namespace pyrodactyl {
+namespace music {
+// We use this object as key for music tracks
+// Empty sounds are represented by -1
+typedef int MusicKey;
+
+// We use this object as key for sound effects
+// Empty sounds are represented by -1
+typedef int ChunkKey;
+
+struct MusicData {
+	// The id of this track
+	MusicKey _id;
+	Audio::AudioStream *_track;
+	Common::File _file;
+
+	// Sound parameters
+	uint32 _fadeInDuration;
+
+	MusicData() {
+		reset();
+	}
+
+	void reset() {
+		_id = -1;
+		_track = nullptr;
+		_fadeInDuration = 100;
+
+		if (_file.isOpen()) {
+			_file.close();
+		}
+	}
+
+	void load(rapidxml::xml_node<char> *node) {
+		loadNum(_id, "id", node);
+		loadNum(_fadeInDuration, "fade_in", node);
+
+		Common::Path cleansedPath = cleansePath(Common::Path(node->first_attribute("path")->value(), '/'));
+		if (_file.open(cleansedPath)) {
+			Audio::SeekableAudioStream *stream = Audio::makeVorbisStream(&_file, DisposeAfterUse::NO);
+			// loops=0 means infinite here.
+			_track = Audio::makeLoopingAudioStream(stream, 0, 0, 0);
+		} else {
+			warning("Could not open file %s", cleansedPath.toString().c_str());
+		}
+	}
+};
+} // End of namespace music
+} // End of namespace pyrodactyl
+
+} // End of namespace Crab
+
+#endif // CRAB_MUSICPARAM_H