diff options
| author | Alexander Traud <pabstraud@compuserve.com> | 2017-04-10 12:13:39 +0200 |
|---|---|---|
| committer | Alexander Traud <pabstraud@compuserve.com> | 2017-04-13 11:05:25 +0200 |
| commit | 72c5f3b0ba40e352fa26eeeead6e72eabd5e7730 (patch) | |
| tree | 391b7a632d64ff75a1bd72e3de9e9d084a6aad64 /res/res_pjsip_sdp_rtp.c | |
| parent | 62386dd1df85d0a9dc8b854836ad77e67bb1d56f (diff) | |
res_pjsip_sdp_rtp: No rtpmap for static RTP payload IDs in SDP.
This saves around 100 bytes when G.711, G.722, G.729, and GSM are advertised in
SDP. This reduces the chance to hit the MTU bearer of 1300 bytes for SIP over
UDP, if many codecs are allowed in Asterisk. This new feature is enabled
together with the optional feature compact_headers=yes via the file pjsip.conf.
ASTERISK-26932 #close
Change-Id: Iaa556ab4c8325cd34c334387ab2847fab07b1689
Diffstat (limited to 'res/res_pjsip_sdp_rtp.c')
| -rw-r--r-- | res/res_pjsip_sdp_rtp.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/res/res_pjsip_sdp_rtp.c b/res/res_pjsip_sdp_rtp.c index 701edc3c2..64c506657 100644 --- a/res/res_pjsip_sdp_rtp.c +++ b/res/res_pjsip_sdp_rtp.c @@ -447,6 +447,7 @@ static int set_caps(struct ast_sip_session *session, static pjmedia_sdp_attr* generate_rtpmap_attr(struct ast_sip_session *session, pjmedia_sdp_media *media, pj_pool_t *pool, int rtp_code, int asterisk_format, struct ast_format *format, int code) { + extern pj_bool_t pjsip_use_compact_form; pjmedia_sdp_rtpmap rtpmap; pjmedia_sdp_attr *attr = NULL; char tmp[64]; @@ -455,6 +456,11 @@ static pjmedia_sdp_attr* generate_rtpmap_attr(struct ast_sip_session *session, p snprintf(tmp, sizeof(tmp), "%d", rtp_code); pj_strdup2(pool, &media->desc.fmt[media->desc.fmt_count++], tmp); + + if (rtp_code <= AST_RTP_PT_LAST_STATIC && pjsip_use_compact_form) { + return NULL; + } + rtpmap.pt = media->desc.fmt[media->desc.fmt_count - 1]; rtpmap.clock_rate = ast_rtp_lookup_sample_rate2(asterisk_format, format, code); pj_strdup2(pool, &rtpmap.enc_name, ast_rtp_lookup_mime_subtype2(asterisk_format, format, code, options)); @@ -1254,11 +1260,9 @@ static int create_outgoing_sdp_stream(struct ast_sip_session *session, struct as continue; } - if (!(attr = generate_rtpmap_attr(session, media, pool, rtp_code, 1, format, 0))) { - ao2_ref(format, -1); - continue; + if ((attr = generate_rtpmap_attr(session, media, pool, rtp_code, 1, format, 0))) { + media->attr[media->attr_count++] = attr; } - media->attr[media->attr_count++] = attr; if ((attr = generate_fmtp_attr(pool, format, rtp_code))) { media->attr[media->attr_count++] = attr; @@ -1287,12 +1291,10 @@ static int create_outgoing_sdp_stream(struct ast_sip_session *session, struct as continue; } - if (!(attr = generate_rtpmap_attr(session, media, pool, rtp_code, 0, NULL, index))) { - continue; + if ((attr = generate_rtpmap_attr(session, media, pool, rtp_code, 0, NULL, index))) { + media->attr[media->attr_count++] = attr; } - media->attr[media->attr_count++] = attr; - if (index == AST_RTP_DTMF) { snprintf(tmp, sizeof(tmp), "%d 0-16", rtp_code); attr = pjmedia_sdp_attr_create(pool, "fmtp", pj_cstr(&stmp, tmp)); |