GstDiskSrc Asynchronous read from a file (disksrc) Asynchonously read buffers from a file. GST_DISKSRC_OPEN the disksrc is open for reading @GST_DISKSRC_OPEN: @GST_DISKSRC_FLAG_LAST: Specify the location of the file to read. Specify how many bytes to read at a time. Get/set the current offset in the file. Get the size of the file.