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rtsp-stream: explicitly set caps on udpsrc elements

Browse source 
This causes them to send caps events before data flow, which is
usually a pretty correct thing to do!

Not doing so manifested in a bug where ssrcdemux wouldn't forward
the caps it had received with an extra ssrc field, as it hadn't
received any caps event.

Fixes #85

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-rtsp-server/-/merge_requests/141>
This commit is contained in:
Mathieu Duponchelle 2020-07-02 23:52:47 +02:00 committed by GStreamer Merge Bot
parent 60d8ed7d4f
commit 34590b342e
1 changed files with 53 additions and 8 deletions
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61
gst/rtsp-server/rtsp-stream.c
View file

@ -3635,13 +3635,17 @@ static gboolean
create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
transport)
{
gboolean ret = FALSE;
GstRTSPStreamPrivate *priv;
GstPad *pad;
GstBin *bin;
gboolean tcp;
gboolean udp;
gboolean mcast;
gboolean secure;
gint i;
GstCaps *rtp_caps;
GstCaps *rtcp_caps;
GST_DEBUG_OBJECT (stream, "create receiver part");
priv = stream->priv;
@ -3650,6 +3654,20 @@ create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
tcp = transport->lower_transport == GST_RTSP_LOWER_TRANS_TCP;
udp = transport->lower_transport == GST_RTSP_LOWER_TRANS_UDP;
mcast = transport->lower_transport == GST_RTSP_LOWER_TRANS_UDP_MCAST;
secure = (priv->profiles & GST_RTSP_PROFILE_SAVP)
|| (priv->profiles & GST_RTSP_PROFILE_SAVPF);
if (secure) {
rtp_caps = gst_caps_new_empty_simple ("application/x-srtp");
rtcp_caps = gst_caps_new_empty_simple ("application/x-srtcp");
} else {
rtp_caps = gst_caps_new_empty_simple ("application/x-rtp");
rtcp_caps = gst_caps_new_empty_simple ("application/x-rtcp");
}
GST_DEBUG_OBJECT (stream,
"RTP caps: %" GST_PTR_FORMAT " RTCP caps: %" GST_PTR_FORMAT, rtp_caps,
rtcp_caps);
for (i = 0; i < 2; i++) {
/* For the receiver we create this bit of pipeline for both
@ -3696,7 +3714,13 @@ create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
GST_DEBUG_OBJECT (stream, "udp IPv4, create and configure udpsources");
if (!create_and_configure_udpsource (&priv->udpsrc_v4[i],
priv->socket_v4[i]))
goto udpsrc_error;
goto done;
if (i == 0) {
g_object_set (priv->udpsrc_v4[i], "caps", rtp_caps, NULL);
} else {
g_object_set (priv->udpsrc_v4[i], "caps", rtcp_caps, NULL);
}
plug_src (stream, bin, priv->udpsrc_v4[i], priv->funnel[i]);
}
@ -3705,7 +3729,13 @@ create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
GST_DEBUG_OBJECT (stream, "udp IPv6, create and configure udpsources");
if (!create_and_configure_udpsource (&priv->udpsrc_v6[i],
priv->socket_v6[i]))
goto udpsrc_error;
goto done;
if (i == 0) {
g_object_set (priv->udpsrc_v6[i], "caps", rtp_caps, NULL);
} else {
g_object_set (priv->udpsrc_v6[i], "caps", rtcp_caps, NULL);
}
plug_src (stream, bin, priv->udpsrc_v6[i], priv->funnel[i]);
}
@ -3714,7 +3744,14 @@ create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
GST_DEBUG_OBJECT (stream, "mcast IPv4, create and configure udpsources");
if (!create_and_configure_udpsource (&priv->mcast_udpsrc_v4[i],
priv->mcast_socket_v4[i]))
goto mcast_udpsrc_error;
goto done;
if (i == 0) {
g_object_set (priv->mcast_udpsrc_v4[i], "caps", rtp_caps, NULL);
} else {
g_object_set (priv->mcast_udpsrc_v4[i], "caps", rtcp_caps, NULL);
}
plug_src (stream, bin, priv->mcast_udpsrc_v4[i], priv->funnel[i]);
}
@ -3722,7 +3759,14 @@ create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
GST_DEBUG_OBJECT (stream, "mcast IPv6, create and configure udpsources");
if (!create_and_configure_udpsource (&priv->mcast_udpsrc_v6[i],
priv->mcast_socket_v6[i]))
goto mcast_udpsrc_error;
goto done;
if (i == 0) {
g_object_set (priv->mcast_udpsrc_v6[i], "caps", rtp_caps, NULL);
} else {
g_object_set (priv->mcast_udpsrc_v6[i], "caps", rtcp_caps, NULL);
}
plug_src (stream, bin, priv->mcast_udpsrc_v6[i], priv->funnel[i]);
}
@ -3738,11 +3782,12 @@ create_receiver_part (GstRTSPStream * stream, const GstRTSPTransport *
gst_element_sync_state_with_parent (priv->funnel[i]);
}
return TRUE;
ret = TRUE;
mcast_udpsrc_error:
udpsrc_error:
return FALSE;
done:
gst_caps_unref (rtp_caps);
gst_caps_unref (rtcp_caps);
return ret;
}
static gboolean