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gnlcomposition: Add a function to block object source pad

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This commit is contained in:
Thibault Saunier 2014-06-25 19:17:55 +02:00
parent 4cb834fa21
commit 381f7d2aee
1 changed files with 25 additions and 20 deletions
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45
gnl/gnlcomposition.c
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@ -946,7 +946,7 @@ get_current_position (GnlComposition * comp)
GstPad *peer = gst_pad_get_peer (GNL_OBJECT (comp)->srcpad);
/* 1. Try querying position downstream */
/* Try querying position downstream */
if (peer) {
res = gst_pad_query_position (peer, GST_FORMAT_TIME, &value);
@ -965,7 +965,7 @@ get_current_position (GnlComposition * comp)
/* resetting format/value */
value = GST_CLOCK_TIME_NONE;
/* 2. If downstream fails , try within the current stack */
/* If downstream fails , try within the current stack */
if (!priv->current) {
GST_DEBUG_OBJECT (comp, "No current stack, can't send query");
goto beach;
@ -1993,6 +1993,26 @@ update_start_stop_duration (GnlComposition * comp)
GST_TIME_ARGS (cobj->stop), GST_TIME_ARGS (cobj->duration));
}
static void
block_object_src_pad (GnlComposition * comp, GnlObject * obj)
{
GnlCompositionEntry *entry = COMP_ENTRY (comp, obj);
if (!entry->probeid) {
GST_LOG_OBJECT (comp, "block_async(%s:%s, TRUE)",
GST_DEBUG_PAD_NAME (obj->srcpad));
entry->probeid =
gst_pad_add_probe (obj->srcpad,
GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM | GST_PAD_PROBE_TYPE_IDLE,
(GstPadProbeCallback) pad_blocked, comp, NULL);
}
if (!entry->dataprobeid) {
entry->dataprobeid = gst_pad_add_probe (obj->srcpad,
GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_BUFFER_LIST |
GST_PAD_PROBE_TYPE_EVENT_BOTH, (GstPadProbeCallback) drop_data,
entry, NULL);
}
}
/*
* recursive depth-first relink stack function on new stack
*
@ -2031,24 +2051,9 @@ compare_relink_single_node (GnlComposition * comp, GNode * node,
srcpad = GNL_OBJECT_SRC (newobj);
/* 1. Make sure the source pad is blocked for new objects */
if (G_UNLIKELY (!oldnode)) {
GnlCompositionEntry *oldentry = COMP_ENTRY (comp, newobj);
if (!oldentry->probeid) {
GST_LOG_OBJECT (comp, "block_async(%s:%s, TRUE)",
GST_DEBUG_PAD_NAME (srcpad));
oldentry->probeid =
gst_pad_add_probe (srcpad,
GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM | GST_PAD_PROBE_TYPE_IDLE,
(GstPadProbeCallback) pad_blocked, comp, NULL);
}
if (!oldentry->dataprobeid) {
oldentry->dataprobeid = gst_pad_add_probe (srcpad,
GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_BUFFER_LIST |
GST_PAD_PROBE_TYPE_EVENT_BOTH, (GstPadProbeCallback) drop_data,
oldentry, NULL);
}
}
/* Make sure the source pad is blocked for new objects */
if (G_UNLIKELY (!oldnode))
block_object_src_pad (comp, newobj);
entry = COMP_ENTRY (comp, newobj);
/* 2. link to parent if needed. */