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v4l2videodec: Protect double calls to set_format()

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In some cases, set_format() may get called twice before the output
format is set. Running an allocation query in this case is both not
needed and will cause assertion due tot he NULL caps.
This commit is contained in:
Nicolas Dufresne 2018-07-09 13:59:02 -04:00
parent 57be4d2da3
commit c87f9eb37b
1 changed files with 6 additions and 4 deletions
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2
sys/v4l2/gstv4l2videodec.c
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@ -260,11 +260,13 @@ gst_v4l2_video_dec_set_format (GstVideoDecoder * decoder,
* block. */
{
GstCaps *caps = gst_pad_get_current_caps (decoder->srcpad);
if (caps) {
GstQuery *query = gst_query_new_allocation (caps, FALSE);
gst_pad_peer_query (decoder->srcpad, query);
gst_query_unref (query);
gst_caps_unref (caps);
}
}
gst_v4l2_object_stop (self->v4l2capture);
self->output_flow = GST_FLOW_OK;