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sdpdemux: redirect SDP with an rtsp control URL

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When we find an SDP with an rtsp:// url as the global control attribute or when
all streams have an rtsp:// control attribute, post an redirect message with an
rtsp-sdp:// url containing the SDP.

Fixes #628214
This commit is contained in:
Mark Nauwelaerts 2010-09-10 18:35:27 +02:00 committed by Wim Taymans
parent 6fcbf593b8
commit 3daea4a085
1 changed files with 68 additions and 0 deletions
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68
gst/sdp/gstsdpdemux.c
View file

@ -1261,6 +1261,65 @@ gst_sdp_demux_start (GstSDPDemux * demux)
if (demux->debug) if (demux->debug)
gst_sdp_message_dump (&sdp); gst_sdp_message_dump (&sdp);
/* maybe this is plain RTSP DESCRIBE rtsp and we should redirect */
/* look for rtsp control url */
{
const gchar *control;
for (i = 0;; i++) {
control = gst_sdp_message_get_attribute_val_n (&sdp, "control", i);
if (control == NULL)
break;
/* only take fully qualified urls */
if (g_str_has_prefix (control, "rtsp://"))
break;
}
if (!control) {
gint idx;
/* try to find non-aggragate control */
n_streams = gst_sdp_message_medias_len (&sdp);
for (idx = 0; idx < n_streams; idx++) {
const GstSDPMedia *media;
/* get media, should not return NULL */
media = gst_sdp_message_get_media (&sdp, idx);
if (media == NULL)
break;
for (i = 0;; i++) {
control = gst_sdp_media_get_attribute_val_n (media, "control", i);
if (control == NULL)
break;
/* only take fully qualified urls */
if (g_str_has_prefix (control, "rtsp://"))
break;
}
/* this media has no control, exit */
if (!control)
break;
}
}
if (control) {
gchar *uri;
/* we have RTSP redirect now */
uri = gst_sdp_message_as_uri ("rtsp-sdp", &sdp);
GST_INFO_OBJECT (demux, "redirect to %s", uri);
gst_element_post_message (GST_ELEMENT_CAST (demux),
gst_message_new_element (GST_OBJECT_CAST (demux),
gst_structure_new ("redirect",
"new-location", G_TYPE_STRING, uri, NULL)));
goto sent_redirect;
}
}
/* try to get and configure a manager */ /* try to get and configure a manager */
if (!gst_sdp_demux_configure_manager (demux)) if (!gst_sdp_demux_configure_manager (demux))
goto no_manager; goto no_manager;
@ -1316,6 +1375,15 @@ could_not_parse:
GST_SDP_STREAM_UNLOCK (demux); GST_SDP_STREAM_UNLOCK (demux);
return FALSE; return FALSE;
} }
sent_redirect:
{
/* avoid hanging if redirect not handled */
gst_sdp_message_uninit (&sdp);
GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND, (NULL),
("Sent RTSP redirect."));
GST_SDP_STREAM_UNLOCK (demux);
return FALSE;
}
} }
static gboolean static gboolean