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d3d11: Don't assume response of context query has valid d3d11 device context

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Peer elements should return FALSE if d3d11 device context is unavailable
but it might happen for some reason (e.g., wrong implementation or so)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1347>
This commit is contained in:
Seungha Yang 2020-06-16 19:26:13 +09:00 committed by GStreamer Merge Bot
parent bc99ea1e30
commit f899728dd4
1 changed files with 11 additions and 7 deletions
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18
sys/d3d11/gstd3d11utils.c
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@ -210,7 +210,7 @@ static void
run_d3d11_context_query (GstElement * element, GstD3D11Device ** device)
{
GstQuery *query;
GstContext *ctxt;
GstContext *ctxt = NULL;
/* 1) Query downstream with GST_QUERY_CONTEXT for the context and
* check if downstream already has a context of the specific type
@ -218,18 +218,22 @@ run_d3d11_context_query (GstElement * element, GstD3D11Device ** device)
query = gst_query_new_context (GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE);
if (run_query (element, query, GST_PAD_SRC)) {
gst_query_parse_context (query, &ctxt);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in downstream query", ctxt);
gst_element_set_context (element, ctxt);
if (ctxt) {
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in downstream query", ctxt);
gst_element_set_context (element, ctxt);
}
}
/* 2) although we found d3d11 device context above, the element does not want
* to use the context. Then try to find from the other direction */
if (*device == NULL && run_query (element, query, GST_PAD_SINK)) {
gst_query_parse_context (query, &ctxt);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in upstream query", ctxt);
gst_element_set_context (element, ctxt);
if (ctxt) {
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in upstream query", ctxt);
gst_element_set_context (element, ctxt);
}
}
if (*device == NULL) {