AnyPS5/docs/dev/debt/libSceConvertKeycode.md

libSceConvertKeycode technical debt

Unknown function info

• sceConvertKeycodeGetCharacter (libSceConvertKeycode) - the signature (uint16_t keycode, uint32_t, uint32_t keyboardType, char16_t* character) is inferred from PPSA12361, which passes a 16-bit keycode, 0, the type from sceConvertKeycodeGetImeKeyboardType and a pointer it reads one UTF-16 unit from when the result is 0. The meaning of the second argument is unknown. PPSA02530 (#5726) and PPSA27836 pass 0x4000000 as a constant: PPSA27836 calls it for every keycode from 0 to 0x8F to build a table of key names, upper-cases a to z itself and skips keycodes that fail or return 0, so that bit is ignored and the unshifted character is returned as for 0. Any other bit throws, and so does a keyboard type other than 0. The returned character for HID usage 0x64 has not been measured on a console; \ is an unverified US-layout guess based on the Windows VK mapping, which does not establish the console result.

Functional

• sceConvertKeycodeGetCharacter (libSceConvertKeycode) takes the keycode as a USB HID keyboard usage and returns the unshifted character of the US layout for letters, digits, punctuation, space and the keypad. A keycode without a character returns 0 with the character 0; whether the console returns an error instead is not measured.