### Setup Local Video Preview

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/GettingStarted.md

Configure and display the local user's video feed. This involves enabling the video module, starting the preview, and setting up the video canvas with the local view.

```swift
func setupLocalVideo() {
    // Enable the video module
    agoraKit.enableVideo()
    // Start the local video preview
    agoraKit.startPreview()
    let videoCanvas = AgoraRtcVideoCanvas()
    videoCanvas.uid = 0
    videoCanvas.renderMode = .hidden
    videoCanvas.view = localView
     // Set the local video view
    agoraKit.setupLocalVideo(videoCanvas)
}
```

--------------------------------

### Setup Remote Video Feed

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/GettingStarted.md

Subscribe to a remote user's video stream and display their video feed. This is typically done within the `didJoinedOfUid` delegate method.

```swift
func rtcEngine(_ engine: AgoraRtcEngineKit, didJoinedOfUid uid: UInt, elapsed: Int) {
    let remoteVideoView = UIView(frame: CGRect(x: 100, y: 0, width: 100, height: 100))
    view.addSubview(remoteVideoView)

    let videoCanvas = AgoraRtcVideoCanvas()
    videoCanvas.uid = uid
    videoCanvas.renderMode = .hidden
    videoCanvas.view = remoteView
    agoraKit.setupRemoteVideo(videoCanvas)
    agoraKit.setupRemoteVideo(remoteVideoView)
}
```

--------------------------------

### Get Connection State

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/Channels.md

Gets the current connection state of the Agora RTC engine.

```APIDOC
## AgoraRtcEngineKit/getConnectionState()

### Description
Gets the current connection state of the Agora RTC engine.

### Method Signature
- `getConnectionState()`
```

--------------------------------

### Initialize AgoraRtcEngineKit

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/GettingStarted.md

Initialize the AgoraRtcEngineKit with your App ID and delegate to establish a connection. Replace 'YOUR_APP_ID' with your actual Agora App ID.

```swift
let agoraKit = AgoraRtcEngineKit.sharedEngine(withAppId: "YOUR_APP_ID", delegate: self)
```

--------------------------------

### Import AgoraRtcKit Framework

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/GettingStarted.md

Import the AgoraRtcKit framework into your Swift file to use Agora's video calling functionalities.

```swift
import AgoraRtcKit
```

--------------------------------

### Add Swift Package Dependency

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/README.md

Use this URL in Xcode to add the Agora Swift Video SDK repository as a package dependency. Ensure you select 'RtcBasic' and any other required extensions.

```bash
https://github.com/AgoraIO/AgoraRtcEngine_iOS
```

--------------------------------

### Initialization and Destruction

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Methods for initializing and destroying the shared Agora RTC engine instance.

```APIDOC
## Initialization and Destruction

### `sharedEngine(withAppId:delegate:)`
Initializes the shared RTC engine with an App ID and delegate.

### `sharedEngine(with:delegate:)`
Initializes the shared RTC engine with an AgoraRtcEngineConfig and delegate.

### `destroy()`
Destroys the shared RTC engine instance and releases resources.
```

--------------------------------

### Join Channel

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/Channels.md

Joins a channel. If the user is already in a channel, the user must leave the channel before joining a new one. This method is used to join a channel with a token.

```APIDOC
## AgoraRtcEngineKit/joinChannel(byToken:channelId:uid:mediaOptions:joinSuccess:)

### Description
Joins a channel. If the user is already in a channel, the user must leave the channel before joining a new one. This method is used to join a channel with a token.

### Method Signature
- `joinChannel(byToken: channelId: uid: mediaOptions: joinSuccess:)`
```

--------------------------------

### Join Channel Ex

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/Channels.md

Joins a secondary channel as an audience member. This method is useful for joining multiple channels.

```APIDOC
## AgoraRtcEngineKit/joinChannelEx(byToken:connection:delegate:mediaOptions:joinSuccess:)

### Description
Joins a secondary channel as an audience member. This method is useful for joining multiple channels.

### Method Signature
- `joinChannelEx(byToken: connection: delegate: mediaOptions: joinSuccess:)`
```

--------------------------------

### Set Client Role

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/Channels.md

Sets the client role.

```APIDOC
## AgoraRtcEngineKit/setClientRole(_:options:)

### Description
Sets the client role.

### Method Signature
- `setClientRole(_:options:)`
```

--------------------------------

### Capture Screenshots

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Method for capturing a snapshot of the current video frame.

```APIDOC
## Capture Screenshots

### `takeSnapshot(_:filePath:)`
Takes a snapshot of the current video frame and saves it to the specified file path. See also: ``AgoraRtcEngineDelegate/rtcEngine(_:snapshotTaken:filePath:width:height:errCode:)``.
```

--------------------------------

### Video Management

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Methods for controlling video features, including enabling/disabling, previewing, and configuring streams.

```APIDOC
## Video Management

### `enableVideo()`
Enables the video module.

### `disableVideo()`
Disables the video module.

### `enableLocalVideo(_:)`
Enables or disables the local video stream transmission.

### `setVideoEncoderConfiguration(_:)`
Sets the video encoder configuration, affecting resolution, frame rate, and bitrate.

### `startPreview()`
Starts the local video preview.

### `stopPreview()`
Stops the local video preview.

### `setupLocalVideo(_:)`
Configures the view for the local video stream.

### `setupRemoteVideo(_:)`
Configures the view for a remote video stream.

### `setLocalRenderMode(_:mirror:)`
Sets the rendering mode and mirror mode for the local video stream.

### `setRemoteRenderMode(_:mode:mirror:)`
Sets the rendering mode and mirror mode for a remote video stream.

### `setRemoteVideoStream(_:type:)`
Sets the type of the remote video stream to subscribe to (e.g., high or low resolution).

### `muteLocalVideoStream(_:)`
Mutes or un-mutes the local video stream.

### `muteRemoteVideoStream(_:mute:)`
Mutes or un-mutes a specified remote user's video stream.

### `muteAllRemoteVideoStreams(_:)`
Mutes or un-mutes all remote video streams.

### `enableInstantMediaRendering()`
Enables instant media rendering.

### `startMediaRenderingTracing()`
Starts tracing media rendering.
```

--------------------------------

### Multi-device Capture

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Methods for managing secondary camera capture.

```APIDOC
## Multi-device capture

### `startSecondaryCameraCapture()`
Starts capturing from a secondary camera.

### `stopSecondaryCameraCapture()`
Stops capturing from a secondary camera.
```

--------------------------------

### Audio Management

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Methods for controlling audio features, including enabling/disabling, muting, and adjusting volumes.

```APIDOC
## Audio Management

### `enableAudio()`
Enables the audio module.

### `disableAudio()`
Disables the audio module.

### `enableLocalAudio(_:)`
Enables or disables the local audio stream transmission.

### `setAudioProfile(_:)`
Sets the audio profile for the engine.

### `setAudioProfile(_:scenario:)`
Sets the audio profile with a specific scenario.

### `setAudioScenario(_:)`
Sets the audio scenario.

### `muteLocalAudioStream(_:)`
Mutes or un-mutes the local audio stream.

### `muteRemoteAudioStream(_:mute:)`
Mutes or un-mutes a specified remote user's audio stream.

### `muteAllRemoteAudioStreams(_:)`
Mutes or un-mutes all remote audio streams.

### `setAudioSessionOperationRestriction(_:)`
Restricts the operation of the audio session.

### `adjustRecordingSignalVolume(_:)`
Adjusts the volume of the recording signal.

### `adjustUserPlaybackSignalVolume(_:volume:)`
Adjusts the playback volume of a specified user's signal.

### `adjustCustomAudioPublishVolume(_:volume:)`
Adjusts the volume of a custom audio publish stream.
```

--------------------------------

### Channel Management

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Methods for managing channel operations, including joining, leaving, and renewing tokens.

```APIDOC
## Channel Management

### `joinChannel(byToken:channelId:info:uid:joinSuccess:)`
Joins a channel using a token, channel ID, optional info, and user ID. The `joinSuccess` callback is invoked upon successful joining.

### `joinChannel(byToken:channelId:uid:mediaOptions:joinSuccess:)`
Joins a channel with advanced media options.

### `updateChannel(with:)`
Updates channel settings.

### `leaveChannel(_:)`
Leaves the current channel.

### `leaveChannel(_:leaveChannelBlock:)`
Leaves the current channel and executes a block upon leaving.

### `renewToken(_:)`
Renews the authentication token for the current channel.

### `setClientRole(_:options:)`
Sets the client role with options (e.g., for live streaming).

### `setClientRole(_:)`
Sets the client role.

### `getConnectionState()`
Gets the current connection state of the RTC engine.
```

--------------------------------

### Stream Subscription Control

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/AgoraRtcEngineKit.md

Methods for controlling which audio and video streams are subscribed to using blocklists and allowlists.

```APIDOC
## Subscribing to and publishing audio and video streams

### `setSubscribeAudioBlocklist(_:)`
Sets a blocklist for subscribing to audio streams.

### `setSubscribeAudioAllowlist(_:)`
Sets an allowlist for subscribing to audio streams.

### `setSubscribeVideoBlocklist(_:)`
Sets a blocklist for subscribing to video streams.

### `setSubscribeVideoAllowlist(_:)`
Sets an allowlist for subscribing to video streams.
```

--------------------------------

### Leave Channel

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/Channels.md

Leaves the current channel.

```APIDOC
## AgoraRtcEngineKit/leaveChannel(_:)

### Description
Leaves the current channel.

### Method Signature
- `leaveChannel(_:)`
```

--------------------------------

### Update Channel

Source: https://github.com/agoraio/agorartcengine_ios/blob/main/AgoraRtcKit.docc/Channels.md

Updates the channel information.

```APIDOC
## AgoraRtcEngineKit/updateChannel(with:)

### Description
Updates the channel information.

### Method Signature
- `updateChannel(with:)`
```

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