add_ptp_handler    37 core/ptp.c         r = add_ptp_handler(PTP_OC_CHDK,handle_ptp,0);
add_ptp_handler    45 core/ptp_chdk.h int add_ptp_handler(int opcode, ptp_handler handler, int unknown);
add_ptp_handler   321 tools/ghidra_scripts/datatypes/fw_functions.h __stdcall int add_ptp_handler(int opcode, ptp_handler handler, int unk);