--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extra_rwops.h	Tue Sep 18 10:54:21 2001 +0000
@@ -0,0 +1,71 @@
+/*
+ * SDL_sound -- An abstract sound format decoding API.
+ * Copyright (C) 2001  Ryan C. Gordon.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Some extra RWops that are needed or are just handy to have.
+ *
+ * Please see the file LICENSE in the source's root directory.
+ *
+ *  This file written by Ryan C. Gordon. (icculus@clutteredmind.org)
+ */
+
+#ifndef _INCLUDE_EXTRA_RWOPS_H_
+#define _INCLUDE_EXTRA_RWOPS_H_
+
+#include "SDL.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The Reference Counter RWops...
+ *
+ *  This wraps another RWops with a reference counter. When you create a
+ *   reference counter RWops, it sets a counter to one. Everytime you call
+ *   RWops_RWRefCounter_new(), that's RWops's counter increments by one.
+ *   Everytime you call that RWops's close() method, the counter decrements
+ *   by one. If the counter hits zero, the original RWops's close() method
+ *   is called, and the reference counting wrapper deletes itself. The read,
+ *   write, and seek methods just pass through to the original.
+ *
+ *  This is handy if you have two libraries (in the original case, SDL_sound
+ *   and SMPEG), who both want an SDL_RWops, and both want to close it when
+ *   they are finished. This resolves that contention. The user creates a
+ *   RWops, passes it to SDL_sound, which wraps it in a reference counter and
+ *   increments the number of references, and passes the wrapped RWops to
+ *   SMPEG. SMPEG "closes" this wrapped RWops when the MP3 has finished
+ *   playing, and SDL_sound then closes it, too. This second closing removes
+ *   the last reference, and the RWops is smoothly destructed.
+ */
+
+/* Return a SDL_RWops that is a reference counting wrapper of (rw). */
+SDL_RWops *RWops_RWRefCounter_new(SDL_RWops *rw);
+
+/* Increment a reference counting RWops's refcount by one. */
+void RWops_RWRefCounter_addRef(SDL_RWops *rw);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !defined _INCLUDE_EXTRA_RWOPS_H_ */
+
+/* end of extra_rwops.h ... */
+