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queue: add silent property to suppress signal emission

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Allow to turn off signal emission and therefore extra locking if this is not needed.
Fixes #621299
This commit is contained in:
Stefan Kost 2010-08-27 15:35:49 +03:00
parent 4e861cefbd
commit e406f7c572
2 changed files with 59 additions and 17 deletions
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46
plugins/elements/gstqueue.c
View file

@ -118,7 +118,7 @@ enum
PROP_MIN_THRESHOLD_BYTES,
PROP_MIN_THRESHOLD_TIME,
PROP_LEAKY,
/* FILL ME */
PROP_SILENT
};
/* default property values */
@ -351,6 +351,19 @@ gst_queue_class_init (GstQueueClass * klass)
GST_TYPE_QUEUE_LEAKY, GST_QUEUE_NO_LEAK,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstQueue:silent
*
* Don't emit queue signals. Makes queues more lightweight if no signals are
* needed.
*
* Since: 0.10.31
*/
g_object_class_install_property (gobject_class, PROP_SILENT,
g_param_spec_boolean ("silent", "Silent",
"Don't emit queue signals", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gobject_class->finalize = gst_queue_finalize;
/* Registering debug symbols for function pointers */
@ -934,9 +947,14 @@ gst_queue_chain (GstPad * pad, GstBuffer * buffer)
* the user defined as "full". Note that this only applies to buffers.
* We always handle events and they don't count in our statistics. */
while (gst_queue_is_filled (queue)) {
if (!queue->silent) {
GST_QUEUE_MUTEX_UNLOCK (queue);
g_signal_emit (queue, gst_queue_signals[SIGNAL_OVERRUN], 0);
GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
} else {
if (queue->srcresult != GST_FLOW_OK)
goto out_flushing;
}
/* we recheck, the signal could have changed the thresholds */
if (!gst_queue_is_filled (queue))
@ -971,9 +989,14 @@ gst_queue_chain (GstPad * pad, GstBuffer * buffer)
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not full");
if (!queue->silent) {
GST_QUEUE_MUTEX_UNLOCK (queue);
g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0);
GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
} else {
if (queue->srcresult != GST_FLOW_OK)
goto out_flushing;
}
break;
}
}
@ -1193,22 +1216,33 @@ gst_queue_loop (GstPad * pad)
GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
while (gst_queue_is_empty (queue)) {
if (!queue->silent) {
GST_QUEUE_MUTEX_UNLOCK (queue);
g_signal_emit (queue, gst_queue_signals[SIGNAL_UNDERRUN], 0);
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is empty");
GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
} else {
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is empty");
if (queue->srcresult != GST_FLOW_OK)
goto out_flushing;
}
/* we recheck, the signal could have changed the thresholds */
while (gst_queue_is_empty (queue)) {
GST_QUEUE_WAIT_ADD_CHECK (queue, out_flushing);
}
GST_QUEUE_MUTEX_UNLOCK (queue);
if (!queue->silent) {
GST_QUEUE_MUTEX_UNLOCK (queue);
g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0);
g_signal_emit (queue, gst_queue_signals[SIGNAL_PUSHING], 0);
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not empty");
GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
} else {
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not empty");
if (queue->srcresult != GST_FLOW_OK)
goto out_flushing;
}
}
ret = gst_queue_push_one (queue);
@ -1459,6 +1493,9 @@ gst_queue_set_property (GObject * object,
case PROP_LEAKY:
queue->leaky = g_value_get_enum (value);
break;
case PROP_SILENT:
queue->silent = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -1506,6 +1543,9 @@ gst_queue_get_property (GObject * object,
case PROP_LEAKY:
g_value_set_enum (value, queue->leaky);
break;
case PROP_SILENT:
g_value_set_boolean (value, queue->silent);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;

2
plugins/elements/gstqueue.h
View file

@ -113,6 +113,8 @@ struct _GstQueue {
gboolean head_needs_discont, tail_needs_discont;
gboolean push_newsegment;
gboolean silent; /* don't emit signals */
};
struct _GstQueueClass {