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stream: add API to block streams

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Add an API to block on the streams and make it post a message.

Based on patch by Ognyan Tonchev <ognyan@axis.com>

See https://bugzilla.gnome.org/show_bug.cgi?id=711257
This commit is contained in:
Wim Taymans 2013-11-28 13:42:21 +01:00
parent 1b0bf529d5
commit bdef631218
2 changed files with 94 additions and 1 deletions
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90
gst/rtsp-server/rtsp-stream.c
View file

@ -120,6 +120,10 @@ struct _GstRTSPStreamPrivate
GList *transports;
gint dscp_qos;
/* stream blocking */
gulong blocked_id;
gboolean blocking;
};
#define DEFAULT_CONTROL NULL
@ -2154,3 +2158,89 @@ gst_rtsp_stream_transport_filter (GstRTSPStream * stream,
return result;
}
static GstPadProbeReturn
pad_blocking (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
GstRTSPStreamPrivate *priv;
GstRTSPStream *stream;
stream = user_data;
priv = stream->priv;
GST_DEBUG_OBJECT (pad, "now blocking");
g_mutex_lock (&priv->lock);
priv->blocking = TRUE;
g_mutex_unlock (&priv->lock);
gst_element_post_message (priv->payloader,
gst_message_new_element (GST_OBJECT_CAST (priv->payloader),
gst_structure_new_empty ("GstRTSPStreamBlocking")));
return GST_PAD_PROBE_OK;
}
/**
* gst_rtsp_stream_set_blocked:
* @stream: a #GstRTSPStream
* @blocked: boolean indicating we should block or unblock
*
* Blocks or unblocks the dataflow on @stream.
*
* Returns: %TRUE on success
*/
gboolean
gst_rtsp_stream_set_blocked (GstRTSPStream * stream, gboolean blocked)
{
GstRTSPStreamPrivate *priv;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
if (blocked) {
priv->blocking = FALSE;
if (priv->blocked_id == 0) {
priv->blocked_id = gst_pad_add_probe (priv->srcpad,
GST_PAD_PROBE_TYPE_BLOCK | GST_PAD_PROBE_TYPE_BUFFER |
GST_PAD_PROBE_TYPE_BUFFER_LIST, pad_blocking,
g_object_ref (stream), g_object_unref);
}
} else {
if (priv->blocked_id != 0) {
gst_pad_remove_probe (priv->srcpad, priv->blocked_id);
priv->blocked_id = 0;
priv->blocking = FALSE;
}
}
g_mutex_unlock (&priv->lock);
return TRUE;
}
/**
* gst_rtsp_stream_is_blocking:
* @stream: a #GstRTSPStream
*
* Check if @stream is blocking on a #GstBuffer.
*
* Returns: %TRUE if @stream is blocking
*/
gboolean
gst_rtsp_stream_is_blocking (GstRTSPStream * stream)
{
GstRTSPStreamPrivate *priv;
gboolean result;
g_return_val_if_fail (GST_IS_RTSP_STREAM (stream), FALSE);
priv = stream->priv;
g_mutex_lock (&priv->lock);
result = priv->blocking;
g_mutex_unlock (&priv->lock);
return result;
}

5
gst/rtsp-server/rtsp-stream.h
View file

@ -98,6 +98,10 @@ gboolean gst_rtsp_stream_join_bin (GstRTSPStream *stream,
gboolean gst_rtsp_stream_leave_bin (GstRTSPStream *stream,
GstBin *bin, GstElement *rtpbin);
gboolean gst_rtsp_stream_set_blocked (GstRTSPStream * stream,
gboolean blocked);
gboolean gst_rtsp_stream_is_blocking (GstRTSPStream * stream);
void gst_rtsp_stream_get_server_port (GstRTSPStream *stream,
GstRTSPRange *server_port,
GSocketFamily family);
@ -157,7 +161,6 @@ GList * gst_rtsp_stream_transport_filter (GstRTSPStream *stream,
GstRTSPStreamTransportFilterFunc func,
gpointer user_data);
G_END_DECLS
#endif /* __GST_RTSP_STREAM_H__ */