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baseparse: avoid returning _OK for _NOT_LINKED

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When the parser receives non-aligned packets it can push a buffer
and get a not-linked return while still leaving some data still to
be parsed. This remaining data will not form a complete frame and
the subclass likely returns _OK and baseparse would take that
as the return, while it the element is actually not-linked.

This patch fixes this by storing the last flow-return from a push
and using that if a parsing operation doesn't result in data being
flushed or skipped.

https://bugzilla.gnome.org/show_bug.cgi?id=731474
This commit is contained in:
Thiago Santos 2014-06-16 19:30:06 -03:00
parent 8f7e581106
commit b7516dbf7c
1 changed files with 4 additions and 0 deletions
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4
libs/gst/base/gstbaseparse.c
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@ -2716,6 +2716,7 @@ gst_base_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
GstBaseParseClass *bclass;
GstBaseParse *parse;
GstFlowReturn ret = GST_FLOW_OK;
GstFlowReturn old_ret = GST_FLOW_OK;
GstBuffer *tmpbuf = NULL;
guint fsize = 1;
gint skip = -1;
@ -2902,8 +2903,11 @@ gst_base_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
if (skip == 0 && flush == 0) {
GST_LOG_OBJECT (parse, "nothing skipped and no frames finished, "
"breaking to get more data");
/* ignore this return as it produced no data */
ret = old_ret;
goto done;
}
old_ret = ret;
}
done: