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When running gst-discoverer-1.0, in certain media, vaapipostroc is stopped meanwhile it is transforming caps. The problem is that stop() calls gst_vaapi_plugin_base_close(), which nullifies the element's va display, but the va display is used in tranform_caps() when it is extracting the possible format conversions. This display disappearing generates warning messages. This patch holds a local reference of va display at ensure_allowed_raw_caps() hence it doesn't go away meanwhile it is used, even if the gst_vaapi_plugin_base_close() is called in other thread. https://bugzilla.gnome.org/show_bug.cgi?id=773593 |
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