sdpmessage: Don't set SDP medias from caps without media/payload/clock-rate fields

Previously it would've silently failed reading the payload/clock-rate
and instead would've used some random value that happened to be on the
stack.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2689>
This commit is contained in:
Sebastian Dröge 2022-06-30 09:02:00 +03:00 committed by GStreamer Marge Bot
parent 6f9ae5d758
commit 3f71a467fc

View file

@ -3814,15 +3814,25 @@ gst_sdp_media_set_media_from_caps (const GstCaps * caps, GstSDPMedia * media)
/* get media type and payload for the m= line */
caps_str = gst_structure_get_string (s, "media");
if (!caps_str) {
GST_ERROR ("ignoring stream without media type");
goto error;
}
gst_sdp_media_set_media (media, caps_str);
gst_structure_get_int (s, "payload", &caps_pt);
if (!gst_structure_get_int (s, "payload", &caps_pt)) {
GST_ERROR ("ignoring stream without payload type");
goto error;
}
tmp = g_strdup_printf ("%d", caps_pt);
gst_sdp_media_add_format (media, tmp);
g_free (tmp);
/* get clock-rate, media type and params for the rtpmap attribute */
gst_structure_get_int (s, "clock-rate", &caps_rate);
if (!gst_structure_get_int (s, "clock-rate", &caps_rate)) {
GST_ERROR ("ignoring stream without payload type");
goto error;
}
caps_enc = gst_structure_get_string (s, "encoding-name");
caps_params = gst_structure_get_string (s, "encoding-params");