ptp_handler        42 core/ptp_chdk.h typedef int (*ptp_handler)(int, ptp_data*, int, int, int, int, int, int, int, int);
ptp_handler        44 core/ptp_chdk.h int add_ptp_handler(int opcode, ptp_handler handler, int unknown);
ptp_handler      1641 platform/generic/wrappers.c int add_ptp_handler(int opcode, ptp_handler handler, int unknown)