Voice SDK for React Native
- API Overview
  Agora provides a flexible combination of APIs deployed globally to deliver reliable real-time audio and video communication.
- IRtcEngine
  The base interface class of the RTC SDK that implements the main functions of real-time audio and video.
- IRtcEngineEx
  Interface class that provides multi-channel methods.
- IRtcEngineEventHandler
  The IRtcEngineEventHandler interface class is used by the SDK to send event notifications to the App. The App obtains SDK event notifications by inheriting methods of this interface class.
- IMediaPlayer
  Class that provides media player functionality and supports multiple instances.
- IMediaPlayerCacheManager
  This class provides methods to manage cached media files in the media player.
- IMediaPlayerSourceObserver
  Provides callbacks for the media player.
- IAudioEncodedFrameObserver
  Observer for encoded audio.
- IAudioFrameObserver
  Audio observer.
- IAudioFrameObserverBase
  Audio observer.
- IMediaPlayerVideoFrameObserver
  Video data observer for media player.
- IVideoEncodedFrameObserver
  Class for receiving encoded video frames.
- IVideoFrameObserver
  Video observer.
- IAudioSpectrumObserver
  Audio spectrum observer.
- IMetadataObserver
  Metadata observer.
- IAudioDeviceManager
  Audio device management methods.
- IMediaEngine
  IMediaEngine class.
- IDirectCdnStreamingEventHandler
  The IDirectCdnStreamingEventHandler interface class is used by the SDK to send CDN streaming event notifications to the App. The App obtains SDK event notifications by inheriting methods of this interface class.
- IBaseSpatialAudioEngine
  This class contains some APIs from the ILocalSpatialAudioEngine class.
- ILocalSpatialAudioEngine
  This class implements spatial audio by calculating user coordinates through the SDK.

IAudioFrameObserver

Audio observer.

You can call registerAudioFrameObserver to register or unregister the IAudioFrameObserver audio observer.

onPlaybackAudioFrameBeforeMixing

Receives the audio of the subscribed remote user before mixing.

onPlaybackAudioFrameBeforeMixing?(
    channelId: string,
    uid: number,
    audioFrame: AudioFrame
  ): void;

Note: Due to framework limitations, this callback does not support sending the processed audio data back to the SDK.

Parameters

channelId: The channel ID.
uid: The ID of the subscribed remote user.
audioFrame: The raw audio data. See AudioFrame.