dmabuf wrapped to GstBuffer for appsrc
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I am looking to transfer the camera nv12 data from v4l2 to the appsrc plugin. Currently, I am using the normal gst_buffer_new_allocate and gst_buffer_fill methods, which results in a copy of the data. To achieve zero copy, it is more efficient to map dmabuf-fd to GstBuffer. How can I accomplish this?