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rtsp-stream: obtain stream position from pad

Browse source 
If no sinks have been added yet, obtain the current and
the stop position of the stream from the send_src pad.

Change-Id: Iacd4ab4bdc69f6b49370d06012880ce48a7d595a

https://bugzilla.gnome.org/show_bug.cgi?id=788340
This commit is contained in:
Patricia Muscalu 2017-10-16 12:40:57 +02:00 committed by Sebastian Dröge
parent 5ec1b80989
commit 930a602e17
1 changed files with 114 additions and 35 deletions
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149
gst/rtsp-server/rtsp-stream.c
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@ -152,6 +152,9 @@ struct _GstRTSPStreamPrivate
gulong blocked_id[2];
gboolean blocking;
/* current stream postion */
GstClockTime position;
/* pt->caps map for RECORD streams */
GHashTable *ptmap;
@ -3746,6 +3749,7 @@ pad_blocking (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
GstRTSPStreamPrivate *priv;
GstRTSPStream *stream;
GstBuffer *buffer = NULL;
stream = user_data;
priv = stream->priv;
@ -3754,6 +3758,20 @@ pad_blocking (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
g_mutex_lock (&priv->lock);
priv->blocking = TRUE;
if ((info->type & GST_PAD_PROBE_TYPE_BUFFER)) {
buffer = gst_pad_probe_info_get_buffer (info);
} else if ((info->type & GST_PAD_PROBE_TYPE_BUFFER_LIST)) {
GstBufferList *list = gst_pad_probe_info_get_buffer_list (info);
buffer = gst_buffer_list_get (list, 0);
} else {
g_assert_not_reached ();
}
g_assert (buffer);
priv->position = GST_BUFFER_TIMESTAMP (buffer);
GST_DEBUG_OBJECT (stream, "buffer position: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
g_mutex_unlock (&priv->lock);
gst_element_post_message (priv->payloader,
@ -3835,6 +3853,7 @@ gst_rtsp_stream_is_blocking (GstRTSPStream * stream)
/**
* gst_rtsp_stream_query_position:
* @stream: a #GstRTSPStream
* @position: current position of a #GstRTSPStream
*
* Query the position of the stream in %GST_FORMAT_TIME. This only considers
* the RTP parts of the pipeline and not the RTCP parts.
@ -3846,36 +3865,74 @@ gst_rtsp_stream_query_position (GstRTSPStream * stream, gint64 * position)
{
GstRTSPStreamPrivate *priv;
GstElement *sink;
gboolean ret;
GstPad *pad = NULL;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
/* query position: if no sinks have been added yet,
* we obtain the position from the pad otherwise we query the sinks */
priv = stream->priv;
g_mutex_lock (&priv->lock);
/* depending on the transport type, it should query corresponding sink */
if ((priv->protocols & GST_RTSP_LOWER_TRANS_UDP) ||
(priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST))
if (priv->protocols & GST_RTSP_LOWER_TRANS_UDP)
sink = priv->udpsink[0];
else if (priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST)
sink = priv->mcast_udpsink[0];
else
sink = priv->appsink[0];
if (sink)
if (sink) {
gst_object_ref (sink);
} else if (priv->send_src[0]) {
pad = gst_object_ref (priv->send_src[0]);
} else {
g_mutex_unlock (&priv->lock);
GST_WARNING_OBJECT (stream, "Couldn't obtain postion: erroneous pipeline");
return FALSE;
}
g_mutex_unlock (&priv->lock);
if (!sink)
return FALSE;
ret = gst_element_query_position (sink, GST_FORMAT_TIME, position);
if (sink) {
if (!gst_element_query_position (sink , GST_FORMAT_TIME, position)) {
GST_WARNING_OBJECT (stream, "Couldn't obtain postion: position query failed");
gst_object_unref (sink);
return FALSE;
}
gst_object_unref (sink);
} else if (pad) {
GstEvent *event;
const GstSegment *segment;
return ret;
event = gst_pad_get_sticky_event (pad, GST_EVENT_SEGMENT, 0);
if (!event) {
GST_WARNING_OBJECT (stream, "Couldn't obtain postion: no segment event");
gst_object_unref (pad);
return FALSE;
}
gst_event_parse_segment (event, &segment);
if (segment->format != GST_FORMAT_TIME) {
*position = -1;
} else {
g_mutex_lock (&priv->lock);
*position = priv->position;
g_mutex_unlock (&priv->lock);
*position =
gst_segment_to_stream_time (segment, GST_FORMAT_TIME, *position);
}
gst_event_unref (event);
gst_object_unref (pad);
}
return TRUE;
}
/**
* gst_rtsp_stream_query_stop:
* @stream: a #GstRTSPStream
* @stop: current stop of a #GstRTSPStream
*
* Query the stop of the stream in %GST_FORMAT_TIME. This only considers
* the RTP parts of the pipeline and not the RTCP parts.
@ -3887,52 +3944,74 @@ gst_rtsp_stream_query_stop (GstRTSPStream * stream, gint64 * stop)
{
GstRTSPStreamPrivate *priv;
GstElement *sink;
GstQuery *query;
gboolean ret;
GstPad *pad = NULL;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
/* query stop position: if no sinks have been added yet,
* we obtain the stop position from the pad otherwise we query the sinks */
priv = stream->priv;
g_mutex_lock (&priv->lock);
/* depending on the transport type, it should query corresponding sink */
if ((priv->protocols & GST_RTSP_LOWER_TRANS_UDP) ||
(priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST))
if (priv->protocols & GST_RTSP_LOWER_TRANS_UDP)
sink = priv->udpsink[0];
else if (priv->protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST)
sink = priv->mcast_udpsink[0];
else
sink = priv->appsink[0];
if (sink)
if (sink) {
gst_object_ref (sink);
} else if (priv->send_src[0]) {
pad = gst_object_ref (priv->send_src[0]);
} else {
g_mutex_unlock (&priv->lock);
GST_WARNING_OBJECT (stream, "Couldn't obtain stop: erroneous pipeline");
return FALSE;
}
g_mutex_unlock (&priv->lock);
if (!sink)
return FALSE;
query = gst_query_new_segment (GST_FORMAT_TIME);
if ((ret = gst_element_query (sink, query))) {
if (sink) {
GstQuery *query;
GstFormat format;
query = gst_query_new_segment (GST_FORMAT_TIME);
if (!gst_element_query (sink, query)) {
GST_WARNING_OBJECT (stream, "Couldn't obtain stop: element query failed");
gst_query_unref (query);
gst_object_unref (sink);
return FALSE;
}
gst_query_parse_segment (query, NULL, &format, NULL, stop);
if (format != GST_FORMAT_TIME)
*stop = -1;
}
gst_query_unref (query);
if (!GST_CLOCK_TIME_IS_VALID (*stop)) {
query = gst_query_new_duration (GST_FORMAT_TIME);
if ((ret = gst_element_query (sink, query))) {
GstFormat format;
gst_query_parse_duration (query, &format, stop);
if (format != GST_FORMAT_TIME)
*stop = -1;
}
gst_query_unref (query);
}
gst_object_unref (sink);
} else if (pad) {
GstEvent *event;
const GstSegment *segment;
return ret;
event = gst_pad_get_sticky_event (pad, GST_EVENT_SEGMENT, 0);
if (!event) {
GST_WARNING_OBJECT (stream, "Couldn't obtain stop: no segment event");
gst_object_unref (pad);
return FALSE;
}
gst_event_parse_segment (event, &segment);
if (segment->format != GST_FORMAT_TIME) {
*stop = -1;
} else {
*stop = segment->stop;
if (*stop == -1)
*stop = segment->duration;
else
*stop = gst_segment_to_stream_time (segment, GST_FORMAT_TIME, *stop);
}
gst_event_unref (event);
gst_object_unref (pad);
}
return TRUE;
}