RFC sdp: Initial SDP creation

* Added additional fields to ast_sdp_options.
* Re-organized ast_sdp.
* Updated field names to correspond to RFC4566 terminology.
* Created allocs/frees for SDP children.
* Created getters/setters for SDP children where appropriate.
* Added ast_sdp_create_from_state.
* Refactored res_sdp_translator_pjmedia for changes.

Change-Id: Iefbd877af7f5a4d3c74deead1bff8802661b0d48

1 files changed, 55 insertions, 0 deletions

diff --git a/main/sdp_private.h b/main/sdp_private.h
new file mode 100644
index 000000000..45aaebf9a
--- /dev/null
+++ b/main/sdp_private.h
@@ -0,0 +1,55 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2017, Digium, Inc.
+ *
+ * Mark Michelson <mmichelson@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+#ifndef _MAIN_SDP_PRIVATE_H
+#define _MAIN_SDP_PRIVATE_H
+
+#include "asterisk/stringfields.h"
+#include "asterisk/sdp_options.h"
+
+struct ast_sdp_options {
+	AST_DECLARE_STRING_FIELDS(
+		/*! Optional media address to use in SDP */
+		AST_STRING_FIELD(media_address);
+		/*! SDP origin username */
+		AST_STRING_FIELD(sdpowner);
+		/*! SDP session name */
+		AST_STRING_FIELD(sdpsession);
+		/*! RTP Engine Name */
+		AST_STRING_FIELD(rtp_engine);
+	);
+	struct {
+		unsigned int bind_rtp_to_media_address : 1;
+		unsigned int rtp_symmetric : 1;
+		unsigned int telephone_event : 1;
+		unsigned int rtp_ipv6 : 1;
+		unsigned int g726_non_standard : 1;
+		unsigned int locally_held : 1;
+	};
+	struct {
+		unsigned int tos_audio;
+		unsigned int cos_audio;
+		unsigned int tos_video;
+		unsigned int cos_video;
+	};
+	enum ast_sdp_options_ice ice;
+	enum ast_sdp_options_impl impl;
+	enum ast_sdp_options_encryption encryption;
+};
+
+#endif /* _MAIN_SDP_PRIVATE_H */