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dtmfsrc: Reject start/stop requests that come out of order

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This commit is contained in:
Olivier Crête 2011-11-04 17:54:04 -04:00
parent d15d524fec
commit d937da4c0c
4 changed files with 32 additions and 10 deletions
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22
gst/dtmf/gstdtmfsrc.c
View file

@ -330,6 +330,9 @@ gst_dtmf_src_handle_dtmf_event (GstDTMFSrc * dtmfsrc,
gboolean start;
gint method;
GstClockTime last_stop;
gint event_number;
gint event_volume;
gboolean correct_order;
if (!gst_structure_get_int (event_structure, "type", &event_type) ||
!gst_structure_get_boolean (event_structure, "start", &start) ||
@ -342,22 +345,25 @@ gst_dtmf_src_handle_dtmf_event (GstDTMFSrc * dtmfsrc,
}
}
if (start)
if (!gst_structure_get_int (event_structure, "number", &event_number) ||
!gst_structure_get_int (event_structure, "volume", &event_volume))
goto failure;
GST_OBJECT_LOCK (dtmfsrc);
if (gst_structure_get_clock_time (event_structure, "last-stop", &last_stop))
dtmfsrc->last_stop = last_stop;
else
dtmfsrc->last_stop = GST_CLOCK_TIME_NONE;
correct_order = (start != dtmfsrc->last_event_was_start);
dtmfsrc->last_event_was_start = start;
GST_OBJECT_UNLOCK (dtmfsrc);
if (!correct_order)
goto failure;
if (start) {
gint event_number;
gint event_volume;
if (!gst_structure_get_int (event_structure, "number", &event_number) ||
!gst_structure_get_int (event_structure, "volume", &event_volume))
goto failure;
GST_DEBUG_OBJECT (dtmfsrc, "Received start event %d with volume %d",
event_number, event_volume);
gst_dtmf_src_add_start_event (dtmfsrc, event_number, event_volume);
@ -896,6 +902,7 @@ gst_dtmf_src_change_state (GstElement * element, GstStateChange transition)
g_slice_free (GstDTMFSrcEvent, event);
event = g_async_queue_try_pop (dtmfsrc->event_queue);
}
dtmfsrc->last_event_was_start = FALSE;
dtmfsrc->timestamp = 0;
no_preroll = TRUE;
break;
@ -922,6 +929,7 @@ gst_dtmf_src_change_state (GstElement * element, GstStateChange transition)
g_slice_free (GstDTMFSrcEvent, event);
event = g_async_queue_try_pop (dtmfsrc->event_queue);
}
dtmfsrc->last_event_was_start = FALSE;
break;
default:

1
gst/dtmf/gstdtmfsrc.h
View file

@ -74,6 +74,7 @@ struct _GstDTMFSrc
GstBaseSrc parent;
GAsyncQueue *event_queue;
GstDTMFSrcEvent *last_event;
gboolean last_event_was_start;
guint16 interval;
GstClockTime timestamp;

18
gst/dtmf/gstrtpdtmfsrc.c
View file

@ -341,6 +341,9 @@ gst_rtp_dtmf_src_handle_dtmf_event (GstRTPDTMFSrc * dtmfsrc,
gboolean start;
gint method;
GstClockTime last_stop;
gint event_number;
gint event_volume;
gboolean correct_order;
if (!gst_structure_get_int (event_structure, "type", &event_type) ||
!gst_structure_get_boolean (event_structure, "start", &start) ||
@ -353,17 +356,24 @@ gst_rtp_dtmf_src_handle_dtmf_event (GstRTPDTMFSrc * dtmfsrc,
}
}
if (start)
if (!gst_structure_get_int (event_structure, "number", &event_number) ||
!gst_structure_get_int (event_structure, "volume", &event_volume))
goto failure;
GST_OBJECT_LOCK (dtmfsrc);
if (gst_structure_get_clock_time (event_structure, "last-stop", &last_stop))
dtmfsrc->last_stop = last_stop;
else
dtmfsrc->last_stop = GST_CLOCK_TIME_NONE;
correct_order = (start != dtmfsrc->last_event_was_start);
dtmfsrc->last_event_was_start = start;
GST_OBJECT_UNLOCK (dtmfsrc);
if (start) {
gint event_number;
gint event_volume;
if (!correct_order)
goto failure;
if (start) {
if (!gst_structure_get_int (event_structure, "number", &event_number) ||
!gst_structure_get_int (event_structure, "volume", &event_volume))
goto failure;
@ -1048,6 +1058,7 @@ gst_rtp_dtmf_src_change_state (GstElement * element, GstStateChange transition)
gst_dtmf_src_post_message (dtmfsrc, "dtmf-event-dropped", event);
gst_rtp_dtmf_src_event_free (event);
}
dtmfsrc->last_event_was_start = FALSE;
no_preroll = TRUE;
break;
@ -1071,6 +1082,7 @@ gst_rtp_dtmf_src_change_state (GstElement * element, GstStateChange transition)
gst_dtmf_src_post_message (dtmfsrc, "dtmf-event-dropped", event);
gst_rtp_dtmf_src_event_free (event);
}
dtmfsrc->last_event_was_start = FALSE;
/* Indicate that we don't do PRE_ROLL */
break;

1
gst/dtmf/gstrtpdtmfsrc.h
View file

@ -93,6 +93,7 @@ struct _GstRTPDTMFSrc
guint16 ptime;
guint16 packet_redundancy;
guint32 clock_rate;
gboolean last_event_was_start;
GstClockTime last_stop;