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-rw-r--r--ChangeLog16
-rw-r--r--examples/switch/switcher.c15
-rw-r--r--gst/switch/gstswitch.c80
-rw-r--r--gst/switch/gstswitch.h4
4 files changed, 78 insertions, 37 deletions
diff --git a/ChangeLog b/ChangeLog
index a946d03c..f8f11120 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2007-06-22 Zaheer Abbas Merali <zaheerabbas at merali dot org>
+
+ * examples/switch/switcher.c (my_bus_callback, switch_timer,
+ last_message_received, main):
+ * gst/switch/gstswitch.c (gst_switch_release_pad,
+ gst_switch_request_new_pad, gst_switch_chain, gst_switch_event,
+ gst_switch_set_property, gst_switch_get_property,
+ gst_switch_get_linked_pad, gst_switch_getcaps,
+ gst_switch_bufferalloc, gst_switch_dispose, gst_switch_init):
+ * gst/switch/gstswitch.h (switch_mutex, GST_SWITCH_LOCK,
+ GST_SWITCH_UNLOCK):
+ Add an extra lock to protect against certain variables instead of
+ using the object lock. Fix case where caps are different in the
+ sink pads causes deadlock. Update example to use different caps
+ on each sink pad.
+
2007-06-22 Jan Schmidt <thaytan@noraisin.net>
* MAINTAINERS:
diff --git a/examples/switch/switcher.c b/examples/switch/switcher.c
index 29f1d1a4..2faa26c7 100644
--- a/examples/switch/switcher.c
+++ b/examples/switch/switcher.c
@@ -68,6 +68,7 @@ switch_timer (GstElement * video_switch)
gint nb_sources;
gchar *active_pad;
+ g_message ("switching");
g_object_get (G_OBJECT (video_switch), "num-sources", &nb_sources, NULL);
g_object_get (G_OBJECT (video_switch), "active-pad", &active_pad, NULL);
@@ -97,7 +98,7 @@ int
main (int argc, char *argv[])
{
GstElement *pipeline, *src1, *src2, *video_switch, *video_sink, *segment;
- GstElement *sink1_sync, *sink2_sync;
+ GstElement *sink1_sync, *sink2_sync, *capsfilter, *scaler;
GstBus *bus;
/* Initing GStreamer library */
@@ -110,11 +111,15 @@ main (int argc, char *argv[])
g_object_set (G_OBJECT (src1), "pattern", 0, NULL);
src2 = gst_element_factory_make ("videotestsrc", "src2");
g_object_set (G_OBJECT (src2), "pattern", 1, NULL);
+ capsfilter = gst_element_factory_make ("capsfilter", "caps0");
+ g_object_set (G_OBJECT (capsfilter), "caps",
+ gst_caps_from_string ("video/x-raw-rgb,width=640,height=480"), NULL);
video_switch = gst_element_factory_make ("switch", "video_switch");
segment = gst_element_factory_make ("identity", "identity-segment");
g_signal_connect (G_OBJECT (segment), "notify::last-message",
G_CALLBACK (last_message_received), segment);
g_object_set (G_OBJECT (segment), "single-segment", TRUE, NULL);
+ scaler = gst_element_factory_make ("videoscale", "videoscale0");
video_sink = gst_element_factory_make ("ximagesink", "video_sink");
//g_object_set (G_OBJECT (video_sink), "sync", FALSE, NULL);
sink1_sync = gst_element_factory_make ("identity", "sink0_sync");
@@ -122,13 +127,15 @@ main (int argc, char *argv[])
sink2_sync = gst_element_factory_make ("identity", "sink1_sync");
g_object_set (G_OBJECT (sink2_sync), "sync", TRUE, NULL);
gst_bin_add_many (GST_BIN (pipeline), src1, src2, segment, video_switch,
- video_sink, sink1_sync, sink2_sync, NULL);
+ video_sink, sink1_sync, sink2_sync, scaler, capsfilter, NULL);
gst_element_link (src1, sink1_sync);
gst_element_link (sink1_sync, video_switch);
- gst_element_link (src2, sink2_sync);
+ gst_element_link (src2, capsfilter);
+ gst_element_link (capsfilter, sink2_sync);
gst_element_link (sink2_sync, video_switch);
gst_element_link (video_switch, segment);
- gst_element_link (segment, video_sink);
+ gst_element_link (segment, scaler);
+ gst_element_link (scaler, video_sink);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch (bus, my_bus_callback, NULL);
diff --git a/gst/switch/gstswitch.c b/gst/switch/gstswitch.c
index 73639d32..a7a20f85 100644
--- a/gst/switch/gstswitch.c
+++ b/gst/switch/gstswitch.c
@@ -127,6 +127,7 @@ gst_switch_release_pad (GstElement * element, GstPad * pad)
gst_element_remove_pad (element, pad);
GST_OBJECT_LOCK (gstswitch);
gstswitch->nb_sinkpads--;
+ GST_SWITCH_LOCK (gstswitch);
if (gstswitch->active_sinkpad == pad) {
gst_object_unref (gstswitch->active_sinkpad);
gstswitch->active_sinkpad = NULL;
@@ -144,6 +145,7 @@ gst_switch_release_pad (GstElement * element, GstPad * pad)
gst_iterator_free (iter);
}
}
+ GST_SWITCH_UNLOCK (gstswitch);
GST_OBJECT_UNLOCK (gstswitch);
}
@@ -173,8 +175,10 @@ gst_switch_request_new_pad (GstElement * element,
if (name)
g_free (name);
+ GST_SWITCH_LOCK (gstswitch);
if (gstswitch->active_sinkpad == NULL)
gstswitch->active_sinkpad = gst_object_ref (sinkpad);
+ GST_SWITCH_UNLOCK (gstswitch);
GST_OBJECT_UNLOCK (gstswitch);
gst_pad_set_getcaps_function (sinkpad,
@@ -201,12 +205,13 @@ gst_switch_chain (GstPad * pad, GstBuffer * buf)
GstFlowReturn res;
GstPad *active_sinkpad;
- GST_OBJECT_LOCK (gstswitch);
+ GST_SWITCH_LOCK (gstswitch);
active_sinkpad = gstswitch->active_sinkpad;
- GST_OBJECT_UNLOCK (gstswitch);
/* Ignore buffers from pads except the selected one */
if (pad != active_sinkpad) {
+ GST_SWITCH_UNLOCK (gstswitch);
+
GST_DEBUG_OBJECT (gstswitch, "Ignoring buffer %p from pad %s:%s",
buf, GST_DEBUG_PAD_NAME (pad));
@@ -216,7 +221,6 @@ gst_switch_chain (GstPad * pad, GstBuffer * buf)
}
/* check if we need to send a new segment event */
- GST_OBJECT_LOCK (gstswitch);
if (gstswitch->need_to_send_newsegment && !gstswitch->queue_buffers) {
/* check to see if we need to send a new segment update for stop */
if (gstswitch->previous_sinkpad != NULL) {
@@ -237,9 +241,11 @@ gst_switch_chain (GstPad * pad, GstBuffer * buf)
GST_DEBUG_OBJECT (gstswitch,
"Sending new segment update with stop of %" G_GUINT64_FORMAT,
gstswitch->stop_value);
+ GST_SWITCH_UNLOCK (gstswitch);
gst_pad_push_event (gstswitch->srcpad,
gst_event_new_new_segment_full (TRUE, rate, applied_rate, format,
gstswitch->current_start, gstswitch->stop_value, position));
+ GST_SWITCH_LOCK (gstswitch);
}
}
gst_object_unref (GST_OBJECT (gstswitch->previous_sinkpad));
@@ -283,18 +289,22 @@ gst_switch_chain (GstPad * pad, GstBuffer * buf)
g_hash_table_lookup (gstswitch->stored_buffers, active_sinkpad);
while (buffers != NULL) {
gst_buffer_ref (GST_BUFFER (buffers->data));
+ GST_SWITCH_UNLOCK (gstswitch);
gst_pad_push (gstswitch->srcpad, GST_BUFFER (buffers->data));
+ GST_SWITCH_LOCK (gstswitch);
buffers = buffers->next;
}
g_hash_table_remove (gstswitch->stored_buffers, active_sinkpad);
}
gstswitch->last_ts = GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf);
if (!gstswitch->queue_buffers) {
- GST_OBJECT_UNLOCK (gstswitch);
/* forward */
- GST_DEBUG_OBJECT (gstswitch, "Forwarding buffer %p from pad %s:%s",
- buf, GST_DEBUG_PAD_NAME (pad));
+ GST_DEBUG_OBJECT (gstswitch, "Forwarding buffer %p from pad %s:%s to %s:%s",
+ buf, GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (gstswitch->srcpad));
+ GST_SWITCH_UNLOCK (gstswitch);
res = gst_pad_push (gstswitch->srcpad, buf);
+ GST_SWITCH_LOCK (gstswitch);
+ GST_DEBUG_OBJECT (gstswitch, "Finished pushing buffer");
} else {
GList *buffers;
gboolean lookup_res = TRUE;
@@ -306,10 +316,9 @@ gst_switch_chain (GstPad * pad, GstBuffer * buf)
/* only need to insert it if it was NULL before because we appended */
if (!lookup_res)
g_hash_table_insert (gstswitch->stored_buffers, active_sinkpad, buffers);
- GST_OBJECT_UNLOCK (gstswitch);
res = GST_FLOW_OK;
}
-
+ GST_SWITCH_UNLOCK (gstswitch);
gst_object_unref (gstswitch);
return res;
@@ -323,7 +332,7 @@ gst_switch_event (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
- GST_OBJECT_LOCK (gstswitch);
+ GST_SWITCH_LOCK (gstswitch);
/* need to put in or replace what's in hash table */
g_hash_table_replace (gstswitch->newsegment_events, pad, event);
if (pad == gstswitch->active_sinkpad) {
@@ -331,7 +340,7 @@ gst_switch_event (GstPad * pad, GstEvent * event)
gstswitch->need_to_send_newsegment = TRUE;
}
}
- GST_OBJECT_UNLOCK (gstswitch);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
default:
ret = gst_pad_event_default (pad, event);
@@ -367,9 +376,9 @@ gst_switch_set_property (GObject * object, guint prop_id,
pad = gst_element_get_pad (GST_ELEMENT (object), pad_name);
}
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
if (pad == gstswitch->active_sinkpad) {
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
if (pad)
gst_object_unref (pad);
break;
@@ -386,22 +395,22 @@ gst_switch_set_property (GObject * object, guint prop_id,
GST_DEBUG_OBJECT (gstswitch, "New active pad is %" GST_PTR_FORMAT,
gstswitch->active_sinkpad);
gstswitch->need_to_send_newsegment = TRUE;
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_START_VALUE:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
gstswitch->start_value = g_value_get_uint64 (value);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_STOP_VALUE:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
gstswitch->stop_value = g_value_get_uint64 (value);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_QUEUE_BUFFERS:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
gstswitch->queue_buffers = g_value_get_boolean (value);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -421,14 +430,14 @@ gst_switch_get_property (GObject * object, guint prop_id,
switch (prop_id) {
case ARG_ACTIVE_SOURCE:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
if (gstswitch->active_sinkpad != NULL) {
g_value_take_string (value,
gst_pad_get_name (gstswitch->active_sinkpad));
} else {
g_value_set_string (value, "");
}
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_NB_SOURCES:
GST_OBJECT_LOCK (object);
@@ -436,24 +445,24 @@ gst_switch_get_property (GObject * object, guint prop_id,
GST_OBJECT_UNLOCK (object);
break;
case ARG_START_VALUE:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
g_value_set_uint64 (value, gstswitch->start_value);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_STOP_VALUE:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
g_value_set_uint64 (value, gstswitch->stop_value);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_LAST_TS:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
g_value_set_uint64 (value, gstswitch->last_ts);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
case ARG_QUEUE_BUFFERS:
- GST_OBJECT_LOCK (object);
+ GST_SWITCH_LOCK (gstswitch);
g_value_set_boolean (value, gstswitch->queue_buffers);
- GST_OBJECT_UNLOCK (object);
+ GST_SWITCH_UNLOCK (gstswitch);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -480,15 +489,18 @@ gst_switch_get_linked_pad (GstPad * pad, gboolean strict)
static GstCaps *
gst_switch_getcaps (GstPad * pad)
{
- GstPad *otherpad = gst_switch_get_linked_pad (pad, FALSE);
+ GstPad *otherpad;
GstObject *parent;
GstCaps *caps;
+
parent = gst_object_get_parent (GST_OBJECT (pad));
+ GST_SWITCH_LOCK (GST_SWITCH (parent));
+ otherpad = gst_switch_get_linked_pad (pad, FALSE);
+ GST_SWITCH_UNLOCK (GST_SWITCH (parent));
if (!otherpad) {
GST_DEBUG_OBJECT (parent,
"Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
-
gst_object_unref (parent);
return gst_caps_new_any ();
}
@@ -514,9 +526,7 @@ gst_switch_bufferalloc (GstPad * pad, guint64 offset,
GstFlowReturn result;
GstPad *active_sinkpad;
- GST_OBJECT_LOCK (gstswitch);
active_sinkpad = gstswitch->active_sinkpad;
- GST_OBJECT_UNLOCK (gstswitch);
/* Fallback allocation for buffers from pads except the selected one */
if (pad != active_sinkpad) {
@@ -573,6 +583,9 @@ gst_switch_dispose (GObject * object)
gstswitch = GST_SWITCH (object);
+ if (gstswitch->switch_mutex) {
+ g_mutex_free (gstswitch->switch_mutex);
+ }
if (gstswitch->active_sinkpad) {
gst_object_unref (gstswitch->active_sinkpad);
gstswitch->active_sinkpad = NULL;
@@ -626,6 +639,7 @@ gst_switch_init (GstSwitch * gstswitch)
gstswitch->start_value = GST_CLOCK_TIME_NONE;
gstswitch->current_start = 0;
gstswitch->last_ts = GST_CLOCK_TIME_NONE;
+ gstswitch->switch_mutex = g_mutex_new ();
}
static void
diff --git a/gst/switch/gstswitch.h b/gst/switch/gstswitch.h
index e7a0ed86..c9ca0ec0 100644
--- a/gst/switch/gstswitch.h
+++ b/gst/switch/gstswitch.h
@@ -66,8 +66,12 @@ struct _GstSwitch {
* new segment has been sent
*/
GHashTable *stored_buffers;
+ GMutex *switch_mutex;
};
+#define GST_SWITCH_LOCK(obj) g_mutex_lock(obj->switch_mutex)
+#define GST_SWITCH_UNLOCK(obj) g_mutex_unlock(obj->switch_mutex)
+
struct _GstSwitchClass {
GstElementClass parent_class;
};
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-29 06:13:51 +0000