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autoconvert: subelement can only be change with stream lock held

Browse source 
It was already the case, now be more explicit about that, and remove useless
lock/ref/unlock/unref dances.
This commit is contained in:
Olivier Crête 2014-05-07 19:54:46 -04:00
parent 606ff3debd
commit 9eeef09c80
2 changed files with 12 additions and 24 deletions
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26
gst/autoconvert/gstautoconvert.c
View file

@ -719,7 +719,6 @@ static gboolean
gst_auto_convert_sink_setcaps (GstAutoConvert * autoconvert, GstCaps * caps)
{
GList *elem;
GstElement *subelement;
GstCaps *other_caps = NULL;
GList *factories;
GstCaps *current_caps;
@ -735,9 +734,7 @@ gst_auto_convert_sink_setcaps (GstAutoConvert * autoconvert, GstCaps * caps)
gst_caps_unref (current_caps);
}
subelement = gst_auto_convert_get_subelement (autoconvert);
if (subelement) {
if (autoconvert->current_subelement) {
if (gst_pad_peer_query_accept_caps (autoconvert->current_internal_srcpad,
caps)) {
/* If we can set the new caps on the current element,
@ -745,20 +742,16 @@ gst_auto_convert_sink_setcaps (GstAutoConvert * autoconvert, GstCaps * caps)
*/
GST_DEBUG_OBJECT (autoconvert, "Could set %s:%s to %" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (autoconvert->current_internal_srcpad), caps);
gst_object_unref (subelement);
goto get_out;
} else {
/* If the current element doesn't work,
* then we remove the current element before finding a new one.
*/
GST_AUTOCONVERT_LOCK (autoconvert);
if (autoconvert->current_subelement == subelement) {
g_clear_object (&autoconvert->current_subelement);
g_clear_object (&autoconvert->current_internal_sinkpad);
g_clear_object (&autoconvert->current_internal_srcpad);
}
GST_AUTOCONVERT_UNLOCK (autoconvert);
gst_object_unref (subelement);
}
}
@ -939,20 +932,13 @@ gst_auto_convert_sink_chain (GstPad * pad, GstObject * parent,
{
GstFlowReturn ret = GST_FLOW_NOT_NEGOTIATED;
GstAutoConvert *autoconvert = GST_AUTO_CONVERT (parent);
GstPad *internal_srcpad;
internal_srcpad = gst_auto_convert_get_internal_srcpad (autoconvert);
if (internal_srcpad) {
ret = gst_pad_push (internal_srcpad, buffer);
gst_object_unref (internal_srcpad);
if (ret != GST_FLOW_OK) {
GstElement *child = gst_auto_convert_get_subelement (autoconvert);
if (autoconvert->current_internal_srcpad) {
ret = gst_pad_push (autoconvert->current_internal_srcpad, buffer);
if (ret != GST_FLOW_OK)
GST_DEBUG_OBJECT (autoconvert,
"Child element %" GST_PTR_FORMAT "returned flow %s", child,
gst_flow_get_name (ret));
if (child)
gst_object_unref (child);
}
"Child element %" GST_PTR_FORMAT "returned flow %s",
autoconvert->current_subelement, gst_flow_get_name (ret));
} else {
GST_ERROR_OBJECT (autoconvert, "Got buffer without an negotiated element,"
" returning not-negotiated");

4
gst/autoconvert/gstautoconvert.h
View file

@ -48,7 +48,9 @@ struct _GstAutoConvert
GstPad *srcpad;
/* Have to be set all at once
* Protected by the object lock */
* Protected by the object lock and the stream lock
* Both must be held to modify these
*/
GstElement *current_subelement;
GstPad *current_internal_srcpad;
GstPad *current_internal_sinkpad;