Changes to add udptl to asterisk (preliminary merging of the t.38 patch)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@8014 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -346,7 +346,7 @@ SUBDIRS=res channels pbx apps codecs formats agi cdr funcs utils stdtime
 OBJS=io.o sched.o logger.o frame.o loader.o config.o channel.o \
 	translate.o file.o say.o pbx.o cli.o md5.o term.o \
 	ulaw.o alaw.o callerid.o fskmodem.o image.o app.o \
-	cdr.o tdd.o acl.o rtp.o manager.o asterisk.o \
+	cdr.o tdd.o acl.o rtp.o udptl.o manager.o asterisk.o \
 	dsp.o chanvars.o indications.o autoservice.o db.o privacy.o \
 	astmm.o enum.o srv.o dns.o aescrypt.o aestab.o aeskey.o \
 	utils.o plc.o jitterbuf.o dnsmgr.o devicestate.o \
@@ -417,6 +417,8 @@ LIBS+=-lssl
 
 INSTALL=install
 
+CFLAGS+=-DT38_SUPPORT
+
 _all: all
 	@echo " +--------- Asterisk Build Complete ---------+"  
 	@echo " + Asterisk has successfully been built, but +"  

include/asterisk/udptl.h

+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * UDPTL support for T.38
+ * 
+ * Copyright (C) 2005, Steve Underwood, partly based on RTP code which is
+ * Copyright (C) 1999-2004, Digium, Inc.
+ *
+ * Steve Underwood <steveu@coppice.org>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ *
+ * This version is disclaimed to DIGIUM for inclusion in the Asterisk project.
+ */
+
+#ifndef _ASTERISK_UDPTL_H
+#define _ASTERISK_UDPTL_H
+
+#include "asterisk/frame.h"
+#include "asterisk/io.h"
+#include "asterisk/sched.h"
+#include "asterisk/channel.h"
+
+#include <netinet/in.h>
+
+enum
+{
+    UDPTL_ERROR_CORRECTION_NONE,
+    UDPTL_ERROR_CORRECTION_FEC,
+    UDPTL_ERROR_CORRECTION_REDUNDANCY
+};
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+struct ast_udptl_protocol {
+	/* Get UDPTL struct, or NULL if unwilling to transfer */
+	struct ast_udptl *(*get_udptl_info)(struct ast_channel *chan);
+	/* Set UDPTL peer */
+	int (* const set_udptl_peer)(struct ast_channel *chan, struct ast_udptl *peer);
+	const char * const type;
+	struct ast_udptl_protocol *next;
+};
+
+struct ast_udptl;
+
+typedef int (*ast_udptl_callback)(struct ast_udptl *udptl, struct ast_frame *f, void *data);
+
+struct ast_udptl *ast_udptl_new(struct sched_context *sched, struct io_context *io, int callbackmode);
+
+struct ast_udptl *ast_udptl_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int callbackmode, struct in_addr in);
+
+void ast_udptl_set_peer(struct ast_udptl *udptl, struct sockaddr_in *them);
+
+void ast_udptl_get_peer(struct ast_udptl *udptl, struct sockaddr_in *them);
+
+void ast_udptl_get_us(struct ast_udptl *udptl, struct sockaddr_in *us);
+
+void ast_udptl_destroy(struct ast_udptl *udptl);
+
+void ast_udptl_reset(struct ast_udptl *udptl);
+
+void ast_udptl_set_callback(struct ast_udptl *udptl, ast_udptl_callback callback);
+
+void ast_udptl_set_data(struct ast_udptl *udptl, void *data);
+
+int ast_udptl_write(struct ast_udptl *udptl, struct ast_frame *f);
+
+struct ast_frame *ast_udptl_read(struct ast_udptl *udptl);
+
+int ast_udptl_fd(struct ast_udptl *udptl);
+
+int ast_udptl_settos(struct ast_udptl *udptl, int tos);
+
+void ast_udptl_set_m_type(struct ast_udptl* udptl, int pt);
+
+void ast_udptl_set_udptlmap_type(struct ast_udptl* udptl, int pt,
+			 char* mimeType, char* mimeSubtype);
+
+int ast_udptl_lookup_code(struct ast_udptl* udptl, int isAstFormat, int code);
+
+void ast_udptl_offered_from_local(struct ast_udptl* udptl, int local);
+
+int ast_udptl_get_error_correction_scheme(struct ast_udptl* udptl);
+
+void ast_udptl_set_error_correction_scheme(struct ast_udptl* udptl, int ec);
+
+int ast_udptl_get_local_max_datagram(struct ast_udptl* udptl);
+
+void ast_udptl_set_local_max_datagram(struct ast_udptl* udptl, int max_datagram);
+
+int ast_udptl_get_far_max_datagram(struct ast_udptl* udptl);
+
+void ast_udptl_set_far_max_datagram(struct ast_udptl* udptl, int max_datagram);
+
+void ast_udptl_get_current_formats(struct ast_udptl* udptl,
+			     int* astFormats, int* nonAstFormats);
+
+void ast_udptl_setnat(struct ast_udptl *udptl, int nat);
+
+int ast_udptl_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc);
+
+int ast_udptl_proto_register(struct ast_udptl_protocol *proto);
+
+void ast_udptl_proto_unregister(struct ast_udptl_protocol *proto);
+
+void ast_udptl_stop(struct ast_udptl *udptl);
+
+void ast_udptl_init(void);
+
+void ast_udptl_reload(void);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif