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v4l2src: don't deref NULL

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Error out when the pool gets shutdown.
This commit is contained in:
Stefan Kost 2010-01-25 17:23:43 +02:00
parent 8576a11dae
commit 21a8cb1e06
1 changed files with 7 additions and 0 deletions
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7
sys/v4l2/v4l2src_calls.c
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@ -105,6 +105,8 @@ gst_v4l2src_grab_frame (GstV4l2Src * v4l2src, GstBuffer ** buf)
v4l2object = v4l2src->v4l2object; v4l2object = v4l2src->v4l2object;
pool = v4l2src->pool; pool = v4l2src->pool;
if (!pool)
goto no_buffer_pool;
GST_DEBUG_OBJECT (v4l2src, "grab frame"); GST_DEBUG_OBJECT (v4l2src, "grab frame");
@ -174,6 +176,11 @@ gst_v4l2src_grab_frame (GstV4l2Src * v4l2src, GstBuffer ** buf)
return GST_FLOW_OK; return GST_FLOW_OK;
/* ERRORS */ /* ERRORS */
no_buffer_pool:
{
GST_DEBUG ("no buffer pool");
return GST_FLOW_WRONG_STATE;
}
select_error: select_error:
{ {
GST_ELEMENT_ERROR (pool->v4l2elem, RESOURCE, READ, (NULL), GST_ELEMENT_ERROR (pool->v4l2elem, RESOURCE, READ, (NULL),