Added shared code to load WAV(E) data from arbitrary seekable streams (files or memory)

svn-id: r16502

sound/wave.h

@@ -0,0 +1,42 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001  Ludvig Strigeus
+ * Copyright (C) 2001-2005 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#ifndef SOUND_WAVE_H
+#define SOUND_WAVE_H
+
+#include "stdafx.h"
+#include "common/scummsys.h"
+
+class AudioStream;
+namespace Common { class SeekableReadStream; }
+
+/**
+ * Try to load a WAVE from the given seekable stream. Returns true if successful; in that case,
+ * the stream will point at the start of the audio data, and size, rate and flags contain
+ * all information about the data necessary for playback.
+ * Currently this only support uncompressed raw PCM data.
+ */
+extern bool loadWAVFromStream(Common::SeekableReadStream &stream, int &size, int &rate, byte &flags);
+
+AudioStream *makeWAVStream(Common::SeekableReadStream &stream);
+
+#endif