Switch 2: Chat services

These services are S2-only.

chat:u

This is "nn::chat::IUserService".

Official sw uses domains with this.

Cmd	Name
0
2
10
11	GetRoomInfo
14	GetLocalCameraImageProcessingMode
15	SetLocalCameraZoomMagnification
16	GetLocalCameraZoomMagnification
20
21	SetScreenSharingDisallowList
22	ClearScreenSharingDisallowList
23	SetScreenSharingMode
40	GetRealtimeAudioLevels
51	CalculateRequiredAudioStreamWorkBufferSize
60	SetSharingKey
61	ClearSharingKey
70
71
72

Cmd0

No input, returns an IUserShimScopedObject.

Cmd2

No input, returns an IUserLayoutCustomizationShimScopedObject.

Cmd10

No input, returns an output u8.

GetRoomInfo

Takes a type-0x1A output buffer containing a RoomInfo.

Official sw also exposes this as GetChattingUid, with data being extracted from the cmd output.

Cmd70

Takes a 0x10-byte input struct, returns an output u8.

Official sw uses this prior to launching the relevant applet with ForChatStart (applet is only launched if cmd output is non-zero).

Cmd71

No input, returns an output u8.

Official sw uses this prior to launching the relevant applet with ForCameraSharingGuide (applet is only launched if cmd output is non-zero).

Cmd72

Takes an input u8, returns an output u8.

Official sw uses this prior to launching the relevant applet with ForCameraConfiguration (applet is only launched if cmd output is non-zero).

IUserShimScopedObject

This is "nn::chat::IUserShimScopedObject".

Cmd	Name
1
2	AttachToRoomInfoChangedEvent
3	AttachToLocalCameraImageProcessingModeChangedEvent
4	AttachToLocalCameraZoomMagnificationChangedEvent
10	StartLocalCameraStreaming
11	StopLocalCameraStreaming
20	StartRemoteCameraStreaming
21	StopRemoteCameraStreaming
30	CreateAudioStreamWorkBuffer
31	DestroyAudioStreamWorkBuffer
32	GetAudioStreamCapacityFrameCount
33	StartAudioStreamRecording
34	StopAudioStreamRecording
35	GetAudioStreamFreeFrameCount
36	GetAudioStreamFilledFrameCount
37	ReadAudioStream

Cmd1

No input, returns an output Event handle with EventClearMode=0.

This Event is used by official sw IsChatting.

AttachToRoomInfoChangedEvent

No input, returns an output Event handle with EventClearMode=0.

AttachToLocalCameraImageProcessingModeChangedEvent

No input, returns an output Event handle with EventClearMode=0.

AttachToLocalCameraZoomMagnificationChangedEvent

No input, returns an output Event handle with EventClearMode=0.

IUserLayoutCustomizationShimScopedObject

This is "nn::chat::IUserLayoutCustomizationShimScopedObject".

Official sw from BeginFullScreenWithLocalCameraAvailableSection uses cmd20 cmd10, cmd11, cmd13 (the exact cmds used depends on input). Depending on input, this may also launch the relevant applet with ForFullScreen.

Cmd	Name
0	Initialize
1
10
11
12	EndFullScreenWithLocalCameraAvailableSection
13
20

Initialize

Takes a PID, an input u64 pid_reserved, no output.

Cmd1

No input, returns an output Event handle with EventClearMode=0.

Used by official sw immediately after Initialize.

Cmd10

No input/output.

Cmd11

No input, returns an output u64.

EndFullScreenWithLocalCameraAvailableSection

No input/output.

Cmd13

No input, returns an output u8 and a 0x10-byte struct.

Cmd20

No input, returns an output u8.

chat:wu

This is "nn::chat::IWebUserService".

Cmd	Name
1

Cmd1

No input. Returns an IWebUserShimScopedObject.

IWebUserShimScopedObject

This is "nn::chat::IWebUserShimScopedObject".

Cmd	Name
1
2
3

Cmd0

No input, returns an output u8.

Cmd1

No input, returns an output Event handle with EventClearMode=0.

Cmd2

No input, returns an output u32.

RoomInfo

This is "nn::chat::RoomInfo".

This is a 0xF0-byte struct.

Offset	Size	Description
0x0	0x18
0x18	0x10	ChattingUid
0x28	0xC8