Implemented the background "music" / atmospheric sounds in Woodruff

svn-id: r31949

1 files changed, 75 insertions, 0 deletions

diff --git a/engines/gob/sound/bgatmosphere.h b/engines/gob/sound/bgatmosphere.h
new file mode 100644
index 0000000000..72b5614282
--- /dev/null
+++ b/engines/gob/sound/bgatmosphere.h
@@ -0,0 +1,75 @@
+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef GOB_SOUND_BGATMOSPHERE_H
+#define GOB_SOUND_BGATMOSPHERE_H
+
+#include "sound/mixer.h"
+#include "common/mutex.h"
+
+#include "gob/sound/sounddesc.h"
+#include "gob/sound/soundmixer.h"
+
+namespace Gob {
+
+class BackgroundAtmosphere : private SoundMixer {
+public:
+	enum PlayMode {
+		kPlayModeLinear,
+		kPlayModeRandom
+	};
+
+	BackgroundAtmosphere(Audio::Mixer &mixer);
+	~BackgroundAtmosphere();
+
+	void play();
+	void stop();
+
+	void setPlayMode(PlayMode mode);
+
+	void queueSample(SoundDesc &sndDesc);
+	void queueClear();
+
+	void shade();
+	void unshade();
+
+private:
+	PlayMode _playMode;
+
+	Common::Array<SoundDesc *> _queue;
+	int _queuePos;
+	bool _shaded;
+
+	Common::Mutex _mutex;
+
+	Common::RandomSource _rnd;
+
+	void checkEndSample();
+	void getNextQueuePos();
+};
+
+} // End of namespace Gob
+
+#endif // GOB_SOUND_BGATMOSPHERE_H