Merge musiconhold stuff (bug #2027), restructure AGI to eventually support registration

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3460 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/agi.h

@@ -0,0 +1,48 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * AGI Extension interfaces
+ * 
+ * Copyright (C) 1999, Mark Spencer
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#ifndef _ASTERISK_AGI_H
+#define _ASTERISK_AGI_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+typedef struct agi_state {
+	int fd;		/* FD for general output */
+	int audio;	/* FD for audio output */
+	int ctrl;	/* FD for input control */
+} AGI;
+
+typedef struct agi_command {
+	/* Null terminated list of the words of the command */
+	char *cmda[AST_MAX_CMD_LEN];
+	/* Handler for the command (channel, AGI state, # of arguments, argument list). 
+	    Returns RESULT_SHOWUSAGE for improper arguments */
+	int (*handler)(struct ast_channel *chan, AGI *agi, int argc, char *argv[]);
+	/* Summary of the command (< 60 characters) */
+	char *summary;
+	/* Detailed usage information */
+	char *usage;
+	struct agi_command *next;
+} agi_command;
+
+
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+
+
+#endif