> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stmlink.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> 对外开放的服务端接口有两组前缀，都用同一套鉴权：`/server/v1/...`（SRTC 与 SMeeting 的主接口）和 `/stm/srvapi/v1/...`（SMeeting 的用户体系，服务端极简对接会用到）。鉴权是 app_id + nonce + timestamp + signature 四个请求头，用 app_key 做 HMAC-SHA256 签名，只能从业务方自己的后端调用。除这两组前缀外的接口均为内部接口，不要建议客户调用。 Public server APIs use two path prefixes with the same authentication: `/server/v1/...` (the main APIs of both SRTC and SMeeting) and `/stm/srvapi/v1/...` (the SMeeting user system, used by server-side low-code integration). Authenticate with four request headers, app_id + nonce + timestamp + signature, where signature is HMAC-SHA256 keyed with app_key; call these APIs only from the customer's own backend. Any other path is internal: never suggest calling it.
> app_key 是服务端密钥，绝不能出现在客户端代码、前端配置或移动 App 里。客户端加入频道用的 token 必须由业务方后端签发后下发（SRTC 走 `/server/v1/channel/grant`，SMeeting 走 `/stm/srvapi/v1/member/grant`）。 app_key is a server-side secret and must never appear in client code, frontend config, or a mobile app. The token a client uses to join must be issued by the customer's backend and passed down to the client (SRTC: `/server/v1/channel/grant`; SMeeting: `/stm/srvapi/v1/member/grant`).
> SRTC 与 SMeeting 是上下两层不同的产品，术语不通用：SRTC 是音视频底座，说「频道 channel」「加入 / 退出」；SMeeting 建在 SRTC 之上，说「房间 room」「会议 meeting」「进入 / 退出」。回答时按用户所在的层用对应术语，不要把「房间」「会议」安到 SRTC 的接口上，也不要用「频道」「加入 / 离开」描述 SMeeting 的概念（接口标识符原样保留）。 SRTC and SMeeting are two separate layers with different terminology. SRTC is the audio/video foundation: it has channels, and users join and leave a channel. SMeeting is built on top of SRTC: it has rooms and meetings, and members enter and exit a meeting. Answer in the terms of the layer the user is working with: never apply "room" or "meeting" to SRTC APIs, and never describe SMeeting concepts in prose with "channel", "join", or "leave" (API identifiers such as `force_join` keep their literal names).
> 同一能力在各端 SDK 里的包名、类名、方法名并不相同。写示例代码时请使用文档中该端自己的 API，不要把一个端的写法套到另一个端上。苹果平台每个产品都有两套 SDK（Swift 原生与 Objective-C），两套 API 不能混用。 Package, class, and method names differ between platform SDKs for the same capability. In sample code, use the API documented for that platform; never carry one platform's code over to another. On Apple platforms each product ships two SDKs (native Swift and Objective-C) whose APIs must not be mixed.

# Settings

> Setting items of the SMeeting Windows SDK: engine-level ISMeetingSetting (log path, stream log) read at login, and meeting-level ISMeetingChannelSetting with the getter/setter of each item and when it takes effect (at enter() or any time).

Settings are split into **engine-level** `ISMeetingSetting` and **meeting-level** `ISMeetingChannelSetting`.

***

## ISMeetingSetting (engine level)

Obtained through `ISMeetingEngine::getSetting()`. These two items are read when `login()` initializes the underlying SRTC engine; changing them afterward has no effect.

| Setting | Setter | Getter | Type |
| - | - | - | - |
| SDK log path | set\_sdk\_log\_path | get\_sdk\_log\_path | std::string |
| Enable stream logs | set\_enable\_stream\_log | get\_enable\_stream\_log | int |

***

## ISMeetingChannelSetting (meeting level)

Obtained through `ISMeetingChannel::getSetting()`. Configure it after `createChannel()` and before `enter()`.

| Setting | Setter | Getter | Type | Takes effect |
| - | - | - | - | - |
| Streaming mode | set\_stream\_model | get\_stream\_model | int | At `enter()` (read when `enter()` internally joins the underlying SRTC channel) |
| MCU track | set\_mcu\_track | get\_mcu\_track | int | At `enter()` (read when `enter()` internally joins the underlying SRTC channel) |
| Enable audio recording | set\_enable\_audio\_record | get\_enable\_audio\_record | int | At `enter()` (read when `enter()` internally joins the underlying SRTC channel) |
| Display name for entering the meeting | set\_room\_name | get\_room\_name | std::string | At enter() |
| Avatar for entering the meeting | set\_room\_avatar | get\_room\_avatar | std::string | At enter() |
| Streaming vendor | set\_stream\_vendor | get\_stream\_vendor | std::string | At enter() |
| Statistics interval | set\_stat\_interval | get\_stat\_interval | int | Can be changed any time |
| Speaker interval | set\_speaker\_interval | get\_speaker\_interval | int | Can be changed any time |
| Noise suppression mode | set\_den\_model | get\_den\_model | int | Can be changed any time |
| Speed limit | set\_limit\_speed | get\_limit\_speed | int | Can be changed any time |

> `stream_model` / `mcu_track` / `enable_audio_record` / `room_name` / `room_avatar` / `stream_vendor` are read at `enter()`, and changing them afterward has no effect; `den_model` / `limit_speed` / `stat_interval` / `speaker_interval` can be changed any time and are applied immediately.