Hello,
if setting all audio-codec priorities to '0' by 'Cp' for pjsua
(pjsip-apps/src/pjsua/*) prior to initiating/answering a call, a
video-only session can be attempted. Though, pjsip later in
SDP-negotiations refuses to negotiate a connection. A possible fix is
attached.
Eeri Kask
-------------- next part --------------
--- pjsip/src/pjsua-lib/pjsua_media.c.orig 2014-05-05 08:19:16.000000000 +0200
+++ pjsip/src/pjsua-lib/pjsua_media.c 2014-05-05 08:22:09.000000000 +0200
@@ -1631,12 +1631,6 @@
if (rem_sdp) {
sort_media(rem_sdp, &STR_AUDIO, acc->cfg.use_srtp,
maudidx, &maudcnt, &mtotaudcnt);
- if (maudcnt==0) {
- /* Expecting audio in the offer */
- if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE_HERE;
- status = PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_ACCEPTABLE_HERE);
- goto on_error;
- }
#if PJMEDIA_HAS_VIDEO
sort_media(rem_sdp, &STR_VIDEO, acc->cfg.use_srtp,
@@ -1646,6 +1640,13 @@
PJ_UNUSED_ARG(STR_VIDEO);
#endif
+ if (maudcnt + mvidcnt == 0) {
+ /* Expecting audio/video in the offer */
+ if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE_HERE;
+ status = PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_ACCEPTABLE_HERE);
+ goto on_error;
+ }
+
/* Update media count only when remote add any media, this media count
* must never decrease. Also note that we shouldn't apply the media
* count setting (of the call setting) before the SDP negotiation.
@@ -1672,11 +1673,12 @@
sort_media(sdp, &STR_AUDIO, acc->cfg.use_srtp,
maudidx, &maudcnt, &mtotaudcnt);
- pj_assert(maudcnt > 0);
sort_media(sdp, &STR_VIDEO, acc->cfg.use_srtp,
mvididx, &mvidcnt, &mtotvidcnt);
+ pj_assert(maudcnt + mvidcnt > 0);
+
/* Call setting may add or remove media. Adding media is done by
* enabling any disabled/port-zeroed media first, then adding new
* media whenever needed. Removing media is done by disabling
