D799 - A port state is its measured fields, the rest zero

Status: decided Date: 2026-10-12

sceAudioOut2PortGetState(port, state), for a port the process made, writes 0x40 bytes and answers 0. The first 0x18 are what a console wrote for its port in a fresh process (REQ-ao07, report-1791758178.txt lines 77-86, the same both times): 81 00 02 00 ff ff 05 00 and sixteen zero bytes - read as the port-state record a console's audio output reports, the output 0x0081, the channel count 2, the volume 0xffff and the reroute counter 5, then the flags and reserved words zero. The 0x28 bytes after them are written as zero.

Assumed (known_by = assumed): that those last 0x28 bytes carry nothing a caller reads. The console wrote addresses of its own there (0x8_000751d0, 0x8_00692b50, ...), which name memory in its process and mean nothing in another; zero is what a caller that clears its record and reads only the fields above would find unchanged.

Why: PPSA04263 asks for its first port's state once at start-up, and the call answered the placeholder.

Rejected:

• Writing the console's addresses back verbatim: they point nowhere here, and a caller that followed one would fault on orbistoun's account.
• Writing only the first 0x18 bytes: the console wrote all 0x40, and a caller may lay its record out to that size.