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glbasesrc: avoid deadlock when querying for OpenGL context

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Continuation of:
a4e49ba8c9
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/642

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/643>
This commit is contained in:
Matthew Waters 2020-04-24 22:40:10 +10:00
parent 5d47b8e232
commit 6a1e575345
1 changed files with 17 additions and 2 deletions
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19
gst-libs/gst/gl/gstglbasesrc.c
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@ -261,11 +261,26 @@ gst_gl_base_src_query (GstBaseSrc * bsrc, GstQuery * query)
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
GstGLDisplay *display = NULL;
GstGLContext *other = NULL, *local = NULL;
gboolean ret;
g_rec_mutex_lock (&src->priv->context_lock);
ret = gst_gl_handle_context_query ((GstElement *) src, query,
src->display, src->context, src->priv->other_context);
if (src->display)
display = gst_object_ref (src->display);
if (src->context)
local = gst_object_ref (src->context);
if (src->priv->other_context)
other = gst_object_ref (src->priv->other_context);
g_rec_mutex_unlock (&src->priv->context_lock);
ret = gst_gl_handle_context_query ((GstElement *) src, query,
display, local, other);
gst_clear_object (&display);
gst_clear_object (&other);
gst_clear_object (&local);
if (ret)
return ret;
break;