Copy size bytes from mem starting at offset and return them wrapped in a new GstMemory object. If size is set to -1, all bytes starting at offset are copied.
size
mem
offset
a #GstMemory
an offset
a size or -1
Copy
sizebytes frommemstarting atoffsetand return them wrapped in a new GstMemory object. Ifsizeis set to -1, all bytes starting atoffsetare copied.