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diff --git a/src/ioops.h b/src/ioops.h
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+++ b/src/ioops.h
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+/* the Music Player Daemon (MPD)
+ * (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * 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
+ */
+
+#ifndef IOOPS_H
+#define IOOPS_H
+
+#include <sys/select.h>
+
+struct ioOps {
+	struct ioOps *prev, *next;
+
+	// Called before each 'select' statement.
+	//   To register for IO, call FD_SET for each required queue
+	// Return the highest fd number you registered
+	int (*fdset) ( fd_set *rfds, fd_set *wfds, fd_set *efds );
+
+	// Called after each 'select' statement.
+	//   fdCount is the number of fds total in all sets.  It may be 0.
+	//   For each fd you registered for in (fdset), you should FD_CLR it from the
+	//   appropriate queue(s).
+	// Return the total number of fds left in all sets (Ie, return fdCount
+	//   minus the number of times you called FD_CLR).
+	int (*consume) ( int fdCount, fd_set *rfds, fd_set *wfds, fd_set *efds );
+};
+
+// Call this to register your io operation handler struct
+void registerIO( struct ioOps *ops );
+
+// Call this to deregister your io operation handler struct
+void deregisterIO( struct ioOps *ops );
+
+#endif