Types.Musicval t : t Ctypes.structure Ctypes_static.typval stream :
(AudioStream.t Ctypes.structure, t Ctypes.structure) Ctypes_static.fieldval frame_count : (Unsigned.uint, t Ctypes.structure) Ctypes_static.fieldval looping : (bool, t Ctypes.structure) Ctypes_static.fieldval ctx_type : (int, t Ctypes.structure) Ctypes_static.fieldval ctx_data : (unit Ctypes_static.ptr, t Ctypes.structure) Ctypes_static.field