diff options
| author | oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b> | 2008-05-14 13:37:07 +0000 |
|---|---|---|
| committer | oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b> | 2008-05-14 13:37:07 +0000 |
| commit | f3a2d1775a50b17e39cb135d2858bb14b604d846 (patch) | |
| tree | 286bbaf1d6f9c03c1aa7e5b135c437d0697a2330 /include | |
| parent | 7dd656be4810ec86df58a1362085159e09401563 (diff) | |
Adding spport for T.140 RED - Simple RTP redundancy to prevent packet loss in text stream
Work sponsored by Omnitor AB, Stockholm, Sweden (http://www.omnitor.se)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@116237 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'include')
| -rw-r--r-- | include/asterisk/frame.h | 8 | ||||
| -rw-r--r-- | include/asterisk/rtp.h | 21 |
2 files changed, 27 insertions, 2 deletions
diff --git a/include/asterisk/frame.h b/include/asterisk/frame.h index 719048b02..0cd748c03 100644 --- a/include/asterisk/frame.h +++ b/include/asterisk/frame.h @@ -274,8 +274,12 @@ extern struct ast_frame ast_null_frame; /*! MPEG4 Video */ #define AST_FORMAT_MP4_VIDEO (1 << 22) #define AST_FORMAT_VIDEO_MASK (((1 << 25)-1) & ~(AST_FORMAT_AUDIO_MASK)) -/*! T.140 Text format - ITU T.140, RFC 4351*/ -#define AST_FORMAT_T140 (1 << 25) +/*! T.140 Text format - ITU T.140, RFC 4103 */ +#define AST_FORMAT_T140 (1 << 26) +/*! T.140 RED Text format RFC 4103 */ +#define AST_FORMAT_T140RED (1 << 27) +/*! Maximum text mask */ +#define AST_FORMAT_MAX_TEXT (1 << 28)) #define AST_FORMAT_TEXT_MASK (((1 << 30)-1) & ~(AST_FORMAT_AUDIO_MASK) & ~(AST_FORMAT_VIDEO_MASK)) enum ast_control_frame_type { diff --git a/include/asterisk/rtp.h b/include/asterisk/rtp.h index 5a857f016..bb8358feb 100644 --- a/include/asterisk/rtp.h +++ b/include/asterisk/rtp.h @@ -51,6 +51,9 @@ extern "C" { /*! Maxmum number of payload defintions for a RTP session */ #define MAX_RTP_PT 256 +/*! T.140 Redundancy Maxium number of generations */ +#define RED_MAX_GENERATION 5 + #define FLAG_3389_WARNING (1 << 0) enum ast_rtp_options { @@ -67,6 +70,8 @@ enum ast_rtp_get_result { }; struct ast_rtp; +/*! T.140 Redundancy structure*/ +struct rtp_red; /*! \brief This is the structure that binds a channel (SIP/Jingle/H.323) to the RTP subsystem */ @@ -288,6 +293,22 @@ int ast_rtp_get_rtptimeout(struct ast_rtp *rtp); /* \brief Put RTP timeout timers on hold during another transaction, like T.38 */ void ast_rtp_set_rtptimers_onhold(struct ast_rtp *rtp); +/*! \brief Initalize t.140 redudancy + * \param ti time between each t140red frame is sent + * \param red_pt payloadtype for RTP packet + * \param pt payloadtype numbers for each generation including primary data + * \param num_gen number of redundant generations, primary data excluded + */ +int rtp_red_init(struct ast_rtp *rtp, int ti, int *pt, int num_gen); + +void red_init(struct rtp_red *red, const struct ast_frame *f); + + +/*! \brief Buffer t.140 data */ +void red_buffer_t140(struct ast_rtp *rtp, struct ast_frame *f); + + + #if defined(__cplusplus) || defined(c_plusplus) } #endif |