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webrtcbin: Fix transitions for the peer connection state

Browse source 
They're now mapping exactly to what
  https://www.w3.org/TR/webrtc/#rtcpeerconnectionstate-enum
actually specifies.

Related to https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/758
This commit is contained in:
Sebastian Dröge 2020-01-09 19:21:08 +02:00 committed by GStreamer Merge Bot
parent 41175f4ebe
commit 22869356db
1 changed files with 62 additions and 39 deletions
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101
ext/webrtc/gstwebrtcbin.c
View file

@ -975,6 +975,12 @@ _collate_peer_connection_states (GstWebRTCBin * webrtc)
#define DTLS_STATE(v) GST_WEBRTC_DTLS_TRANSPORT_STATE_ ## v
GstWebRTCICEConnectionState any_ice_state = 0;
GstWebRTCDTLSTransportState any_dtls_state = 0;
gboolean ice_all_new_or_closed = TRUE;
gboolean dtls_all_new_or_closed = TRUE;
gboolean ice_all_new_connecting_or_checking = TRUE;
gboolean dtls_all_new_connecting_or_checking = TRUE;
gboolean ice_all_connected_completed_or_closed = TRUE;
gboolean dtls_all_connected_completed_or_closed = TRUE;
int i;
for (i = 0; i < webrtc->priv->transceivers->len; i++) {
@ -984,7 +990,7 @@ _collate_peer_connection_states (GstWebRTCBin * webrtc)
WebRTCTransceiver *trans = WEBRTC_TRANSCEIVER (rtp_trans);
TransportStream *stream = trans->stream;
GstWebRTCDTLSTransport *transport, *rtcp_transport;
GstWebRTCICEGatheringState ice_state;
GstWebRTCICEConnectionState ice_state;
GstWebRTCDTLSTransportState dtls_state;
gboolean rtcp_mux = FALSE;
@ -1005,11 +1011,28 @@ _collate_peer_connection_states (GstWebRTCBin * webrtc)
GST_TRACE_OBJECT (webrtc, "transceiver %p DTLS state: 0x%x", rtp_trans,
dtls_state);
any_dtls_state |= (1 << dtls_state);
if (dtls_state != DTLS_STATE (NEW) && dtls_state != DTLS_STATE (CLOSED))
dtls_all_new_or_closed = FALSE;
if (dtls_state != DTLS_STATE (NEW) && dtls_state != DTLS_STATE (CONNECTING))
dtls_all_new_connecting_or_checking = FALSE;
if (dtls_state != DTLS_STATE (CONNECTED)
&& dtls_state != DTLS_STATE (CLOSED))
dtls_all_connected_completed_or_closed = FALSE;
g_object_get (transport->transport, "state", &ice_state, NULL);
GST_TRACE_OBJECT (webrtc, "transceiver %p ICE state: 0x%x", rtp_trans,
ice_state);
any_ice_state |= (1 << ice_state);
if (ice_state != ICE_STATE (NEW) && ice_state != ICE_STATE (CLOSED))
ice_all_new_or_closed = FALSE;
if (ice_state != ICE_STATE (NEW) && ice_state != ICE_STATE (CHECKING))
ice_all_new_connecting_or_checking = FALSE;
if (ice_state != ICE_STATE (CONNECTED) && ice_state != ICE_STATE (COMPLETED)
&& ice_state != ICE_STATE (CLOSED))
ice_all_connected_completed_or_closed = FALSE;
rtcp_transport = webrtc_transceiver_get_rtcp_dtls_transport (rtp_trans);
if (!rtcp_mux && rtcp_transport && rtcp_transport != transport) {
@ -1017,10 +1040,29 @@ _collate_peer_connection_states (GstWebRTCBin * webrtc)
GST_TRACE_OBJECT (webrtc, "transceiver %p RTCP DTLS state: 0x%x",
rtp_trans, dtls_state);
any_dtls_state |= (1 << dtls_state);
if (dtls_state != DTLS_STATE (NEW) && dtls_state != DTLS_STATE (CLOSED))
dtls_all_new_or_closed = FALSE;
if (dtls_state != DTLS_STATE (NEW)
&& dtls_state != DTLS_STATE (CONNECTING))
dtls_all_new_connecting_or_checking = FALSE;
if (dtls_state != DTLS_STATE (CONNECTED)
&& dtls_state != DTLS_STATE (CLOSED))
dtls_all_connected_completed_or_closed = FALSE;
g_object_get (rtcp_transport->transport, "state", &ice_state, NULL);
GST_TRACE_OBJECT (webrtc, "transceiver %p RTCP ICE state: 0x%x",
rtp_trans, ice_state);
any_ice_state |= (1 << ice_state);
if (ice_state != ICE_STATE (NEW) && ice_state != ICE_STATE (CLOSED))
ice_all_new_or_closed = FALSE;
if (ice_state != ICE_STATE (NEW) && ice_state != ICE_STATE (CHECKING))
ice_all_new_connecting_or_checking = FALSE;
if (ice_state != ICE_STATE (CONNECTED)
&& ice_state != ICE_STATE (COMPLETED)
&& ice_state != ICE_STATE (CLOSED))
ice_all_connected_completed_or_closed = FALSE;
}
}
@ -1043,53 +1085,34 @@ _collate_peer_connection_states (GstWebRTCBin * webrtc)
return STATE (FAILED);
}
/* Any of the RTCIceTransport's or RTCDtlsTransport's are in the connecting
* or checking state and none of them is in the failed state. */
if (any_ice_state & (1 << ICE_STATE (CHECKING))) {
GST_TRACE_OBJECT (webrtc, "returning connecting");
return STATE (CONNECTING);
}
if (any_dtls_state & (1 << DTLS_STATE (CONNECTING))) {
GST_TRACE_OBJECT (webrtc, "returning connecting");
return STATE (CONNECTING);
}
/* Any of the RTCIceTransport's or RTCDtlsTransport's are in the disconnected
* state and none of them are in the failed or connecting or checking state. */
* state. */
if (any_ice_state & (1 << ICE_STATE (DISCONNECTED))) {
GST_TRACE_OBJECT (webrtc, "returning disconnected");
return STATE (DISCONNECTED);
}
/* All RTCIceTransport's and RTCDtlsTransport's are in the connected,
* completed or closed state and at least of them is in the connected or
* completed state. */
if (!(any_ice_state & ~(1 << ICE_STATE (CONNECTED) | 1 <<
ICE_STATE (COMPLETED) | 1 << ICE_STATE (CLOSED)))
&& !(any_dtls_state & ~(1 << DTLS_STATE (CONNECTED) | 1 <<
DTLS_STATE (CLOSED)))
&& (any_ice_state & (1 << ICE_STATE (CONNECTED) | 1 <<
ICE_STATE (COMPLETED))
|| any_dtls_state & (1 << DTLS_STATE (CONNECTED)))) {
GST_TRACE_OBJECT (webrtc, "returning connected");
return STATE (CONNECTED);
/* All RTCIceTransports and RTCDtlsTransports are in the new or closed
* state, or there are no transports. */
if ((dtls_all_new_or_closed && ice_all_new_or_closed)
|| webrtc->priv->transceivers->len == 0) {
GST_TRACE_OBJECT (webrtc, "returning new");
return STATE (NEW);
}
/* Any of the RTCIceTransport's or RTCDtlsTransport's are in the new state
* and none of the transports are in the connecting, checking, failed or
* disconnected state, or all transports are in the closed state. */
if (!(any_ice_state & ~(1 << ICE_STATE (CLOSED)))) {
GST_TRACE_OBJECT (webrtc, "returning new");
return STATE (NEW);
/* All RTCIceTransports and RTCDtlsTransports are in the new, connecting
* or checking state. */
if (dtls_all_new_connecting_or_checking && ice_all_new_connecting_or_checking) {
GST_TRACE_OBJECT (webrtc, "returning connecting");
return STATE (CONNECTING);
}
if ((any_ice_state & (1 << ICE_STATE (NEW))
|| any_dtls_state & (1 << DTLS_STATE (NEW)))
&& !(any_ice_state & (1 << ICE_STATE (CHECKING) | 1 << ICE_STATE (FAILED)
| (1 << ICE_STATE (DISCONNECTED))))
&& !(any_dtls_state & (1 << DTLS_STATE (CONNECTING) | 1 <<
DTLS_STATE (FAILED)))) {
GST_TRACE_OBJECT (webrtc, "returning new");
return STATE (NEW);
/* All RTCIceTransports and RTCDtlsTransports are in the connected,
* completed or closed state. */
if (dtls_all_connected_completed_or_closed
&& ice_all_connected_completed_or_closed) {
GST_TRACE_OBJECT (webrtc, "returning connected");
return STATE (CONNECTED);
}
GST_FIXME_OBJECT (webrtc, "Undefined situation detected, returning new");