/**
* Allocate a video display state
*
* @param stp Pointer to allocated display state
* @param vidispl List of Video-displays
* @param name Name of video display
* @param prm Video display parameters (optional)
* @param dev Display device
* @param resizeh Window resize handler
* @param arg Handler argument
*
* @return 0 if success, otherwise errorcode
*/
int vidisp_alloc(struct vidisp_st **stp, struct list *vidispl,
const char *name,
struct vidisp_prm *prm, const char *dev,
vidisp_resize_h *resizeh, void *arg)
{
struct vidisp *vd = (struct vidisp *)vidisp_find(vidispl, name);
if (!vd)
return ENOENT;
return vd->alloch(stp, vd, prm, dev, resizeh, arg);
}
/**
* Allocate a new Call state object
*
* @param callp Pointer to allocated Call state object
* @param cfg Global configuration
* @param lst List of call objects
* @param local_name Local display name (optional)
* @param local_uri Local SIP uri
* @param acc Account parameters
* @param ua User-Agent
* @param prm Call parameters
* @param msg SIP message for incoming calls
* @param xcall Optional call to inherit properties from
* @param eh Call event handler
* @param arg Handler argument
*
* @return 0 if success, otherwise errorcode
*/
int call_alloc(struct call **callp, const struct config *cfg, struct list *lst,
const char *local_name, const char *local_uri,
struct account *acc, struct ua *ua, const struct call_prm *prm,
const struct sip_msg *msg, struct call *xcall,
call_event_h *eh, void *arg)
{
struct call *call;
enum vidmode vidmode = prm ? prm->vidmode : VIDMODE_OFF;
bool use_video = true, got_offer = false;
int label = 0;
int err = 0;
if (!cfg || !local_uri || !acc || !ua)
return EINVAL;
call = mem_zalloc(sizeof(*call), call_destructor);
if (!call)
return ENOMEM;
MAGIC_INIT(call);
call->config_avt = cfg->avt;
tmr_init(&call->tmr_inv);
call->acc = mem_ref(acc);
call->ua = ua;
call->state = STATE_IDLE;
call->eh = eh;
call->arg = arg;
call->af = prm ? prm->af : AF_INET;
err = str_dup(&call->local_uri, local_uri);
if (local_name)
err |= str_dup(&call->local_name, local_name);
if (err)
goto out;
/* Init SDP info */
err = sdp_session_alloc(&call->sdp, net_laddr_af(call->af));
if (err)
goto out;
err = sdp_session_set_lattr(call->sdp, true,
"tool", "baresip " BARESIP_VERSION);
if (err)
goto out;
/* Check for incoming SDP Offer */
if (msg && mbuf_get_left(msg->mb))
got_offer = true;
/* Initialise media NAT handling */
if (acc->mnat) {
err = acc->mnat->sessh(&call->mnats, net_dnsc(), call->af,
acc->stun_host, acc->stun_port,
acc->stun_user, acc->stun_pass,
call->sdp, !got_offer,
mnat_handler, call);
if (err) {
warning("call: medianat session: %m\n", err);
goto out;
}
}
call->mnat_wait = true;
/* Media encryption */
if (acc->menc) {
if (acc->menc->sessh) {
err = acc->menc->sessh(&call->mencs, call->sdp,
!got_offer,
menc_error_handler, call);
if (err) {
warning("call: mediaenc session: %m\n", err);
goto out;
}
}
}
/* Audio stream */
err = audio_alloc(&call->audio, cfg, call,
call->sdp, ++label,
acc->mnat, call->mnats, acc->menc, call->mencs,
acc->ptime, account_aucodecl(call->acc),
audio_event_handler, audio_error_handler, call);
if (err)
goto out;
#ifdef USE_VIDEO
/* We require at least one video codec, and at least one
video source or video display */
use_video = (vidmode != VIDMODE_OFF)
&& (list_head(account_vidcodecl(call->acc)) != NULL)
&& (NULL != vidsrc_find(NULL) || NULL != vidisp_find(NULL));
/* Video stream */
if (use_video) {
err = video_alloc(&call->video, cfg,
call, call->sdp, ++label,
acc->mnat, call->mnats,
acc->menc, call->mencs,
"main",
account_vidcodecl(call->acc),
video_error_handler, call);
if (err)
goto out;
}
if (str_isset(cfg->bfcp.proto)) {
err = bfcp_alloc(&call->bfcp, call->sdp,
cfg->bfcp.proto, !got_offer,
acc->mnat, call->mnats);
if (err)
goto out;
}
#else
(void)use_video;
(void)vidmode;
#endif
/* inherit certain properties from original call */
if (xcall) {
call->not = mem_ref(xcall->not);
}
list_append(lst, &call->le, call);
out:
if (err)
mem_deref(call);
else if (callp)
*callp = call;
return err;
}