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rtp_engine.c: Get current or create a needed rx payload type mapping.

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* Make ast_rtp_codecs_payload_code() get the current mapping or create a
rx payload type mapping.

ASTERISK-25166
Reported by: Kevin Harwell

ASTERISK-17410
Reported by: Boris Fox

Change-Id: Ia4b2d45877a8f004f6ce3840e3d8afe533384e56
This commit is contained in:
Richard Mudgett
2015-07-27 19:19:25 -05:00
parent 38854a9f7b
commit f7df3e1a01
2 changed files with 160 additions and 24 deletions
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15
include/asterisk/rtp_engine.h
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@@ -242,17 +242,19 @@ enum ast_rtp_instance_stat {
/*! Structure that represents a payload */
struct ast_rtp_payload_type {
/*! Is this an Asterisk value */
int asterisk_format;
/*! If asterisk_format is set, this is the internal
* asterisk format represented by the payload */
struct ast_format *format;
/*! Is this an Asterisk value */
int asterisk_format;
/*! Actual internal RTP specific value of the payload */
int rtp_code;
/*! Actual payload number */
int payload;
/*! TRUE if this is the primary mapping to the format. */
unsigned int primary_mapping:1;
/*! When the payload type became non-primary. */
struct timeval when_retired;
};
/* Common RTCP report types */
@@ -1451,8 +1453,13 @@ void ast_rtp_codecs_payload_formats(struct ast_rtp_codecs *codecs, struct ast_fo
* \param format Asterisk format to look for
* \param code The format to look for
*
* \details
* Find the currently assigned rx mapped payload type based on whether it
* is an Asterisk format or non-format code. If one is currently not
* assigned then create a rx payload type mapping.
*
* \retval Numerical payload type
* \retval -1 if not found.
* \retval -1 if could not assign.
*
* Example usage:
*
@@ -1464,7 +1471,7 @@ void ast_rtp_codecs_payload_formats(struct ast_rtp_codecs *codecs, struct ast_fo
*
* \since 1.8
*/
int ast_rtp_codecs_payload_code(struct ast_rtp_codecs *codecs, int asterisk_format, const struct ast_format *format, int code);
int ast_rtp_codecs_payload_code(struct ast_rtp_codecs *codecs, int asterisk_format, struct ast_format *format, int code);
/*!
* \brief Retrieve a tx mapped payload type based on whether it is an Asterisk format and the code