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rtspsrc: degrade gracefully upon failing seek and tweak QUERY_SEEKING response

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This commit is contained in:
Mark Nauwelaerts 2010-12-02 16:08:34 +01:00
parent 52b5929a2b
commit c25625c31c
2 changed files with 44 additions and 0 deletions
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43
gst/rtsp/gstrtspsrc.c
View file

@ -2033,6 +2033,11 @@ gst_rtspsrc_handle_src_query (GstPad * pad, GstQuery * query)
gboolean seekable =
src->cur_protocols != GST_RTSP_LOWER_TRANS_UDP_MCAST;
/* seeking without duration is unlikely */
seekable = seekable && src->seekable && src->segment.duration &&
GST_CLOCK_TIME_IS_VALID (src->segment.duration);
/* FIXME ?? should we have 0 and segment.duration here; see demuxers */
gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
src->segment.start, src->segment.stop);
res = TRUE;
@ -4604,6 +4609,8 @@ gst_rtspsrc_parse_methods (GstRTSPSrc * src, GstRTSPMessage * response)
/* always assume PLAY, FIXME, extensions should be able to override
* this */
src->methods |= GST_RTSP_PLAY;
/* also assume it will support Range */
src->seekable = TRUE;
/* we need describe and setup */
if (!(src->methods & GST_RTSP_DESCRIBE))
@ -5777,6 +5784,20 @@ gen_range_header (GstRTSPSrc * src, GstSegment * segment)
return res;
}
static void
clear_rtp_base (GstRTSPSrc * src, GstRTSPStream * stream)
{
stream->timebase = -1;
stream->seqbase = -1;
if (stream->caps) {
GstStructure *s;
stream->caps = gst_caps_make_writable (stream->caps);
s = gst_caps_get_structure (stream->caps, 0);
gst_structure_remove_fields (s, "clock-base", "seqnum-base", NULL);
}
}
static gboolean
gst_rtspsrc_play (GstRTSPSrc * src, GstSegment * segment)
{
@ -5861,6 +5882,28 @@ gst_rtspsrc_play (GstRTSPSrc * src, GstSegment * segment)
if (gst_rtspsrc_send (src, conn, &request, &response, NULL) < 0)
goto send_error;
/* seek may have silently failed as it is not supported */
if (!(src->methods & GST_RTSP_PLAY)) {
GST_DEBUG_OBJECT (src, "PLAY Range not supported; re-enable PLAY");
/* obviously it is supported as we made it here */
src->methods |= GST_RTSP_PLAY;
src->seekable = FALSE;
/* but there is nothing to parse in the response,
* so convey we have no idea and not to expect anything particular */
clear_rtp_base (src, stream);
if (control) {
GList *run;
/* need to do for all streams */
for (run = src->streams; run; run = g_list_next (run))
clear_rtp_base (src, (GstRTSPStream *) run->data);
}
/* NOTE the above also disables npt based eos detection */
/* and below forces position to 0,
* which is visible feedback we lost the plot */
segment->start = segment->last_stop = 0;
}
gst_rtsp_message_unset (&request);
/* parse RTP npt field. This is the current position in the stream (Normal

1
gst/rtsp/gstrtspsrc.h
View file

@ -230,6 +230,7 @@ struct _GstRTSPSrc {
/* supported methods */
gint methods;
gboolean seekable;
/* session management */
GstElement *session;