d3d11decoder: Fix crash on negotiate() when decoder is not configured

The negotiate() can be called by GstVideoDecoder baseclass on GAP event,
and decoder helper object might not be configured at the time
when negotiate() is called.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5401>

diff --git a/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11decoder.cpp b/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11decoder.cpp
index c919072..4c4511d 100644 (file)
--- a/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11decoder.cpp
+++ b/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11decoder.cpp
@@ -1686,6 +1686,11 @@ gst_d3d11_decoder_negotiate (GstD3D11Decoder * decoder,
   info = &decoder->output_info;
   input_state = decoder->input_state;
 
+  if (!decoder->configured) {
+    GST_WARNING_OBJECT (videodec, "Decoder is not configured");
+    return FALSE;
+  }
+
   alternate_interlaced =
       (GST_VIDEO_INFO_INTERLACE_MODE (info) ==
       GST_VIDEO_INTERLACE_MODE_ALTERNATE);