Agora RTC Objective-C API Reference Refactor

Data Fields
ExtensionInfo Struct Reference

## Data Fields
agora::media::MEDIA_SOURCE_TYPE | mediaSourceType
uid_t | remoteUid
const char * | channelId
uid_t | localUid

## Detailed Description

The information for extension.

## Constructor & Destructor Documentation

## ◆ ExtensionInfo()

ExtensionInfo | ( |  | ) |
| inline

## Field Documentation

## ◆ mediaSourceType

agora::media::MEDIA_SOURCE_TYPE mediaSourceType

The type of media device.

## ◆ remoteUid

uid_t remoteUid

The id of the remote user on which the extension works.

Note
  remoteUid = 0 means that the extension works on all remote streams.

## ◆ channelId

const char* channelId

The unique channel name for the AgoraRTC session in the string format. The string length must be less than 64 bytes. Supported character scopes are:

- All lowercase English letters: a to z.
- All uppercase English letters: A to Z.
- All numeric characters: 0 to 9.
- The space character.
- Punctuation characters and other symbols, including: "!", "#", "$", "%", "&", "(", ")", "+", "-", ":", ";", "<", "=", ".", ">", "?", "@", "[", "]", "^", "_", " {", "}", "|", "~", ",".

## ◆ localUid

uid_t localUid

User ID: A 32-bit unsigned integer ranging from 1 to (2^32-1). It must be unique.