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res_pjsip_sdp_rtp: Enable Opus to be negotiated via SIP/SDP.

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In SIP/SDP, Opus has two channels always (see RFC 7587 section 7). The actual
amount of channels is negotiated in-band. Therefore now, the Opus codec and its
attribute rtpmap are registered with two channels.

ASTERISK-24779 #close
Reported by: PowerPBX
Tested by: Alexander Traud
patches:
  asterisk-24779.patch submitted by Sean Bright (license #5060)

Change-Id: Ic7ac13cafa1d3450b4fa4987350924b42cbb657b
This commit is contained in:
Alexander Traud
2015-11-06 13:57:15 +01:00
parent 506aea26e6
commit 33752e0837
1 changed files with 5 additions and 2 deletions
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7
res/res_pjsip_sdp_rtp.c
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@@ -387,8 +387,11 @@ static pjmedia_sdp_attr* generate_rtpmap_attr(struct ast_sip_session *session, p
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));
rtpmap.param.slen = 0;
rtpmap.param.ptr = NULL;
if (!pj_stricmp2(&rtpmap.enc_name, "opus")) {
pj_cstr(&rtpmap.param, "2");
} else {
pj_cstr(&rtpmap.param, NULL);
}
pjmedia_sdp_rtpmap_to_attr(pool, &rtpmap, &attr);