HI, we are working on sa8155p board, how to pass dmafd to qvconv gstremer plugin, unfortunatley we dont have access to qvconv convertor source code. will get dmafd gbm from another process and need to pass it to qvconv. using the below method qvconv is trying to mmap where the fd is not directly mmap.
GstBuffer *buffer = gst_buffer_new();
GstAllocator *allocator = gst_dmabuf_allocator_new();
if (buffer != nullptr && allocator != nullptr) {
GstMemory *mem = gst_dmabuf_allocator_alloc(allocator, fd, nBufSize);
gst_buffer_append_memory(buffer, mem);
*buf = buffer;