Merge of the "sdpcleanup" branch. Thanks to John Martin for a lot of tests

and some patches (all disclaimed).

- Don't change RTP properties if we reject a re-INVITE
- Don't add video to an outbound channel if there's no video on the inbound channel
- Don't include video in the "preferred codec" list for codec selection
- Clean up and document code that parses and adds SDP attachments

Since we do not transcode video, we can't handle video the same way as audio. This is a
bug fix patch. In future releases, we need to work on a solution for video negotiation,
not codecs but formats and framerates instead.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@32597 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/rtp.h

@@ -40,13 +40,13 @@ extern "C" {
 
 /* Codes for RTP-specific data - not defined by our AST_FORMAT codes */
 /*! DTMF (RFC2833) */
-#define AST_RTP_DTMF            (1 << 0)
+#define AST_RTP_DTMF            	(1 << 0)
 /*! 'Comfort Noise' (RFC3389) */
-#define AST_RTP_CN              (1 << 1)
+#define AST_RTP_CN              	(1 << 1)
 /*! DTMF (Cisco Proprietary) */
-#define AST_RTP_CISCO_DTMF      (1 << 2)
+#define AST_RTP_CISCO_DTMF      	(1 << 2)
 /*! Maximum RTP-specific code */
-#define AST_RTP_MAX             AST_RTP_CISCO_DTMF
+#define AST_RTP_MAX             	AST_RTP_CISCO_DTMF
 
 #define MAX_RTP_PT			256
 
@@ -62,6 +62,9 @@ struct ast_rtp_protocol {
 	AST_LIST_ENTRY(ast_rtp_protocol) list;
 };
 
+
+#define FLAG_3389_WARNING		(1 << 0)
+
 typedef int (*ast_rtp_callback)(struct ast_rtp *rtp, struct ast_frame *f, void *data);
 
 
@@ -71,7 +74,6 @@ typedef int (*ast_rtp_callback)(struct ast_rtp *rtp, struct ast_frame *f, void *
  * RTP session is defined on page 9 of RFC 3550: "An association among a set of participants communicating with RTP.  A participant may be involved in multiple RTP sessions at the same time [...]"
  *
  */
-
 /*! \brief The value of each payload format mapping: */
 struct rtpPayloadType {
 	int isAstFormat; 	/*!< whether the following code is an AST_FORMAT */

include/asterisk/translate.h

@@ -23,7 +23,8 @@
 #ifndef _ASTERISK_TRANSLATE_H
 #define _ASTERISK_TRANSLATE_H
 
-#define MAX_FORMAT 32
+//#define MAX_FORMAT 15	/* Do not include video here */
+#define MAX_FORMAT 32	/* Do include video here */
 
 #if defined(__cplusplus) || defined(c_plusplus)
 extern "C" {