/*filter setup if no session (rtp only)*/
M4Err RP_SetupChannel(RTPStream *ch, ChannelDescribe *ch_desc)
{
M4Err resp;
/*assign ES_ID of the channel*/
if (ch_desc && !ch->ES_ID && ch_desc->ES_ID) ch->ES_ID = ch_desc->ES_ID;
ch->status = RTP_Setup;
/*assign channel handle if not done*/
if (ch_desc && ch->channel) {
assert(ch->channel == ch_desc->channel);
} else if (!ch->channel) {
assert(ch_desc);
assert(ch_desc->channel);
ch->channel = ch_desc->channel;
}
/*no session , setup for pure rtp*/
if (!ch->rtsp) {
ch->connected = 1;
/*init rtp*/
resp = RP_InitStream(ch, 0),
/*send confirmation to user*/
RP_ConfirmChannelConnect(ch, resp);
} else {
RP_Setup(ch);
}
return M4OK;
}
/*process describe reply*/
void RP_ProcessDescribe(RTPSession *sess, RTSPCommand *com, M4Err e)
{
RTPStream *ch;
ChannelDescribe *ch_desc;
ch = NULL;
ch_desc = com->user_data;
if (e) goto exit;
switch (sess->rtsp_rsp->ResponseCode) {
//TODO handle all 3xx codes (redirections)
case NC_RTSP_Multiple_Choice:
e = ch_desc ? M4ChannelNotFound : M4URLNotFound;
goto exit;
case NC_RTSP_Not_Found:
e = M4URLNotFound;
goto exit;
case NC_RTSP_OK:
break;
default:
//we should have a basic error code mapping here
e = M4ServiceError;
goto exit;
}
ch = NULL;
if (ch_desc) {
ch = RP_FindChannel(sess->owner, ch_desc->channel, ch_desc->ES_ID, ch_desc->esd_url, 0);
} else {
NM_OnMessage(sess->owner->service, M4OK, "Connected");
}
/*error on loading SDP is done internally*/
RP_LoadSDP(sess->owner, sess->rtsp_rsp->body, sess->rtsp_rsp->Content_Length, ch);
if (!ch_desc) goto exit;
if (!ch) {
e = M4ChannelNotFound;
goto exit;
}
e = RP_SetupChannel(ch, ch_desc);
exit:
if (e) {
if (!ch_desc) {
NM_OnConnect(sess->owner->service, NULL, e);
} else if (ch) {
RP_ConfirmChannelConnect(ch, e);
} else {
NM_OnConnect(sess->owner->service, ch_desc->channel, e);
}
}
if (ch_desc) free(ch_desc);
com->user_data = NULL;
}
void RP_ProcessSetup(RTPSession *sess, RTSPCommand *com, M4Err e)
{
RTPStream *ch;
u32 i;
RTSPTransport *trans;
ch = com->user_data;
if (e) goto exit;
switch (sess->rtsp_rsp->ResponseCode) {
case NC_RTSP_OK:
break;
case NC_RTSP_Not_Found:
e = M4ChannelNotFound;
goto exit;
default:
e = M4ServiceError;
goto exit;
}
e = M4ServiceError;
if (!ch) goto exit;
/*transport setup: break at the first correct transport */
for (i=0; i<ChainGetCount(sess->rtsp_rsp->Transports); i++) {
trans = ChainGetEntry(sess->rtsp_rsp->Transports, 0);
e = RTP_SetupTransport(ch->rtp_ch, trans, RTSP_GetServerName(sess->session));
if (!e) break;
}
if (e) goto exit;
e = RP_InitStream(ch, 0);
if (e) goto exit;
ch->status = RTP_Connected;
//in case this is TCP channel, setup callbacks
ch->is_interleaved = RTP_IsInterleaved(ch->rtp_ch);
if (ch->is_interleaved) {
RTSP_SetCallbackOnInterleaving(sess->session, RP_DataOnTCP);
}
exit:
/*confirm only on first connect, otherwise this is a re-SETUP of the rtsp session, not the channel*/
if (! ch->connected) {
ch->connected = 1;
RP_ConfirmChannelConnect(ch, e);
}
com->user_data = NULL;
}
static GF_Err RP_ConnectChannel(GF_InputService *plug, LPNETCHANNEL channel, const char *url, Bool upstream)
{
u32 ESID;
RTPStream *ch;
RTSPSession *sess;
char *es_url;
RTPClient *priv = (RTPClient *)plug->priv;
if (upstream) return GF_NOT_SUPPORTED;
GF_LOG(GF_LOG_DEBUG, GF_LOG_RTP, ("[RTP] Connecting channel @%08x - %s\n", channel, url));
ch = RP_FindChannel(priv, channel, 0, (char *) url, 0);
if (ch && (ch->status != RTP_Disconnected) ) return GF_SERVICE_ERROR;
es_url = NULL;
sess = NULL;
if (strstr(url, "ES_ID=")) {
sscanf(url, "ES_ID=%ud", &ESID);
/*first case: simple URL (same namespace)*/
ch = RP_FindChannel(priv, NULL, ESID, NULL, 0);
/*this should not happen, the sdp must describe all streams in the service*/
if (!ch) return GF_STREAM_NOT_FOUND;
/*assign app channel*/
ch->channel = channel;
sess = ch->rtsp;
}
/*rtsp url - create a session if needed*/
else if (!strnicmp(url, "rtsp://", 7) || !strnicmp(url, "rtspu://", 8)) {
sess = RP_CheckSession(priv, (char *) url);
if (!sess) sess = RP_NewSession(priv, (char *) url);
es_url = (char *) url;
}
/*data: url*/
else if (strstr(url, "data:application/mpeg4-od-au;base64")
|| strstr(url, "data:application/mpeg4-bifs-au;base64")
|| strstr(url, "data:application/mpeg4-es-au;base64")
) {
GF_SAFEALLOC(ch, RTPStream);
ch->control = gf_strdup(url);
ch->owner = priv;
ch->channel = channel;
ch->status = RTP_Connected;
/*register*/
gf_list_add(priv->channels, ch);
RP_ConfirmChannelConnect(ch, GF_OK);
return GF_OK;
}
/*session migration resume - don't send data to the server*/
if (ch->status==RTP_SessionResume) {
ch->flags |= RTP_CONNECTED;
RP_InitStream(ch, 0);
RP_ConfirmChannelConnect(ch, GF_OK);
return GF_OK;
}
/*send a DESCRIBE (not a setup) on the channel. If the channel is already created then the
describe is skipped and a SETUP is sent directly, otherwise the channel is first described then setup*/
if (sess) RP_Describe(sess, es_url, channel);
/*otherwise confirm channel connection*/
else RP_ConfirmChannelConnect(ch, GF_OK);
return GF_OK;
}