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11 lines
2.9 KiB
Markdown
11 lines
2.9 KiB
Markdown
# libSceVoiceQoS technical debt
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### Unknown function info
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- [sceVoiceQoSSetConnectionAttribute](../../../core/libs/prx/libSceVoiceQoS/Export.cpp) (libSceVoiceQoS, NID `KCGOxg8iX7s`) is a throwing stub declared without parameters, like the other endpoint calls of the library: PPSA04159 fails to load without it and its signature is unknown. The name hashes to the imported NID (`tools/nid_names.py`)
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- [sceVoiceQoSInit](../../../core/libs/prx/libSceVoiceQoS/Export.cpp) (libSceVoiceQoS) - `0x804E0905` for a second initialization comes from [prosper](https://github.com/mattias800/prosper)'s reading of the module and was not measured: on a PS5 a valid call blocks inside a homebrew payload, so it never returns there. PPSA26344's two call sites (`0xE307BF`, `0x151C45D`) pass an allocated pointer, a 0x40000-byte block and app type 0x10000000; the app type and block are not used. `sceVoiceQoSCreateLocalEndpoint` takes four arguments (`int* id, userId, deviceInId, deviceOutId`) as declared in fpPS4 (`src/ps4_libscevoice.pas`, `ps4_sceVoiceQoSCreateLocalEndpoint`); no public reference exists for the other seven signatures (`DeleteLocalEndpoint(id)`, `CreateRemoteEndpoint(int* id)`, `DeleteRemoteEndpoint(id)`, `Connect(int* id, local, remote)`, `Disconnect(connection)`, `SetLocalEndpointAttribute(id, attribute, value, size)`, `SetRemoteEndpointAttribute(id, attribute, value, size)`), which are assumed from function naming and call patterns and not confirmed on a PS5 title. Endpoints and connections are tracked by allocated id; duplicate connections and deleting an endpoint while referenced in a connection are permitted as the console is not known to reject them; endpoint attributes are stored as given (including empty or non-positive sizes), as their ids and defaults are unknown; other endpoint and packet calls remain throwing stubs. The not-initialized error 0x804E0901 is assumed from the 0x804E09xx numbering, and unknown ids return `ARGUMENT_INVALID`. Aliens: Fireteam Elite (PPSA03393) uses all seven implemented calls on its first load path, starting with `sceVoiceQoSCreateLocalEndpoint` when it registers the local talker; it stops with `not implemented` when any of them throws
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### Functional
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- [sceVoiceQoSEnd](../../../core/libs/prx/libSceVoiceQoS/Export.cpp) (libSceVoiceQoS) - `0x804E0901` (not initialized) before any initialization was measured on a PS5 (firmware 13.60, #1407); ending an initialized library was not, because a valid `sceVoiceQoSInit` never returns inside a homebrew payload. PPSA14632 calls it at shutdown and PPSA26344 after a nonzero `sceVoiceQoSInit`. After an initialization it returns 0 and clears the init flag, so the library can be initialized again. Whether the console also ends the libSceVoice instance that its `sceVoiceQoSInit` starts ([prosper](https://github.com/mattias800/prosper)'s reading of the module), and what it answers while endpoints exist, is unknown; here it drops every endpoint and connection
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