GstAsyncDiskSrc Asynchronous disk reader. (asyncdisksrc) Reads data from a file. You can seek to a specific location by setting the offset. GST_ASYNCDISKSRC_OPEN the asyncdisksrc is open for reading @GST_ASYNCDISKSRC_OPEN: @GST_ASYNCDISKSRC_FLAG_LAST: Specify the location of the file to read. Specify how many bytes to read at a time. Specify the current offset in the file.