allow for packetization on rtp channel drivers, need to add

option for setting our own packetization as apposed to just doing 
what is asked.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@43243 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/frame.h

@@ -38,6 +38,7 @@ extern "C" {
 
 struct ast_codec_pref {
 	char order[32];
+	char framing[32];
 };
 
 /*! \page Def_Frame AST Multimedia and signalling frames
@@ -281,6 +282,7 @@ enum ast_control_frame_type {
 };
 
 #define AST_SMOOTHER_FLAG_G729		(1 << 0)
+#define AST_SMOOTHER_FLAG_BE		(1 << 1)
 
 /* Option identifiers and flags */
 #define AST_OPTION_FLAG_REQUEST		0
@@ -346,6 +348,23 @@ struct ast_option_header {
 		uint8_t data[0];
 };
 
+
+/*! \brief Definition of supported media formats (codecs) */
+struct ast_format_list {
+	int visible;	/*!< Can we see this entry */
+	int bits;	/*!< bitmask value */
+	char *name;	/*!< short name */
+	char *desc;	/*!< Description */
+	int fr_len;	/*!< Single frame length in bytes */
+	int min_ms;	/*!< Min value */
+	int max_ms;	/*!< Max value */
+	int inc_ms;	/*!< Increment */
+	int def_ms;	/*!< Default value */
+	unsigned int flags;	/*!< Smoother flags */
+	int cur_ms;	/*!< Current value */
+};
+
+
 /*! \brief  Requests a frame to be allocated 
  * 
  * \param source 
@@ -436,6 +455,7 @@ struct ast_format_list *ast_get_format_list(size_t *size);
 struct ast_smoother *ast_smoother_new(int bytes);
 void ast_smoother_set_flags(struct ast_smoother *smoother, int flags);
 int ast_smoother_get_flags(struct ast_smoother *smoother);
+int ast_smoother_test_flag(struct ast_smoother *s, int flag);
 void ast_smoother_free(struct ast_smoother *s);
 void ast_smoother_reset(struct ast_smoother *s, int bytes);
 int __ast_smoother_feed(struct ast_smoother *s, struct ast_frame *f, int swap);
@@ -482,6 +502,14 @@ int ast_codec_pref_append(struct ast_codec_pref *pref, int format);
    the format list is selected, otherwise 0 is returned. */
 int ast_codec_choose(struct ast_codec_pref *pref, int formats, int find_best);
 
+/*! \brief Set packet size for codec
+*/
+int ast_codec_pref_setsize(struct ast_codec_pref *pref, int format, int framems);
+
+/*! \brief Get packet size for codec
+*/
+struct ast_format_list ast_codec_pref_getsize(struct ast_codec_pref *pref, int format);
+
 /*! \brief Parse an "allow" or "deny" line in a channel or device configuration 
         and update the capabilities mask and pref if provided.
 	Video codecs are not added to codec preference lists, since we can not transcode

include/asterisk/rtp.h

@@ -210,6 +210,12 @@ void ast_rtp_init(void);
 
 int ast_rtp_reload(void);
 
+int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs);
+
+struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp);
+
+int ast_rtp_codec_getformat(int pt);
+
 #if defined(__cplusplus) || defined(c_plusplus)
 }
 #endif