From b6032727870ab2b98372b697d91f7256da4f32b3 Mon Sep 17 00:00:00 2001 From: Keith Date: Tue, 29 Aug 2017 16:56:11 +0200 Subject: sdp.c Send octet-align in fmtp rfc4867 8.2: octet-align: Permissible values are 0 and 1. If 1, octet-aligned operation SHALL be used. If 0 or if not present, bandwidth-efficient operation is employed. We don't have any support for AMR BE mode, but if we don't send this the other end expects BE mode and can't decode the stream Change-Id: I938758ac4ec55db9223e3da6c3c277e8fa670055 --- src/sdp.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/src/sdp.c b/src/sdp.c index ccd000d..213e979 100644 --- a/src/sdp.c +++ b/src/sdp.c @@ -166,18 +166,27 @@ bool sdp_extract_sdp(struct sip_call_leg *leg, const sip_t *sip, bool any_codec) char *sdp_create_file(struct sip_call_leg *leg, struct call_leg *other) { struct in_addr net = { .s_addr = ntohl(other->ip) }; + char *fmtp_str = NULL, *sdp; leg->wanted_codec = app_media_name(other->payload_msg_type); - return talloc_asprintf(leg, + + if (strcmp(leg->wanted_codec, "AMR") == 0) + fmtp_str = talloc_asprintf(leg, "a=fmtp:%d octet-align=1\r\n", other->payload_type); + + sdp = talloc_asprintf(leg, "v=0\r\n" "o=Osmocom 0 0 IN IP4 %s\r\n" "s=GSM Call\r\n" "c=IN IP4 %s\r\n" "t=0 0\r\n" "m=audio %d RTP/AVP %d\r\n" + "%s" "a=rtpmap:%d %s/8000\r\n", inet_ntoa(net), inet_ntoa(net), /* never use diff. addr! */ other->port, other->payload_type, + fmtp_str ? fmtp_str : "", other->payload_type, leg->wanted_codec); + talloc_free(fmtp_str); + return sdp; } -- cgit v1.2.3