Here is a list of all files with brief descriptions:

AgoraAudioEncodedFrameSender.java
AgoraAudioPcmDataSender.java
AgoraAudioSink.java
AgoraAudioTrack.java
AgoraLocalAudioTrack.java
AgoraLocalUser.java
AgoraLocalVideoTrack.java
AgoraMediaNodeFactory.java
AgoraMediaPacketReceiver.java
AgoraMediaPacketSender.java
AgoraParameter.java
AgoraRemoteAudioMixerSource.java
AgoraRemoteAudioTrack.java
AgoraRemoteVideoTrack.java
AgoraRtcConn.java
AgoraService.java
AgoraServiceConfig.java
AgoraVideoBeautyFilter.java
AgoraVideoEncodedFrameObserver.java
AgoraVideoEncodedImageReceiver.java
AgoraVideoEncodedImageSender.java
AgoraVideoFrameObserver2.java
AgoraVideoFrameSender.java
AgoraVideoSink.java
AudioEncoderConfig.java
AudioFrame.java
AudioPcmFrame.java
AudioSinkWants.java
AudioSubscriptionOptions.java
AudioVolumeInfo.java
ChannelMediaInfo.java
DefaultVideoEncodedFrameObserver.java
DefaultVideoFrameObserver2.java
DownlinkNetworkInfo.java
EncodedAudioFrameAdvancedSettings.java
EncodedAudioFrameInfo.java
EncodedVideoFrameInfo.java
EncryptionConfig.java
ExternalVideoFrame.java
IAgoraMediaPlayerSourceObserver.java
IAudioDeviceManagerObserver.java
IAudioFrameObserver.java
IAudioSink.java
ILocalUserObserver.java
IMediaCtrlPacketReceiver.java
IMediaPacketReceiver.java
INetworkObserver.java
IRtcConnObserver.java
IRtmpStreamingObserver.java
IVideoEncodedFrameObserver.java
IVideoEncodedImageReceiver.java
IVideoFrameObserver.java
IVideoFrameObserver2.java
LastmileProbeConfig.java
LastmileProbeOneWayResult.java
LastmileProbeResult.java
LiveTranscoding.java
LocalAudioStats.java
LocalAudioTrackStats.java
LocalVideoTrackStats.java
PeerDownlinkInfo.java
Rectangle.java
RemoteAudioTrackStats.java
RemoteVideoStreamInfo.java
RemoteVideoTrackStats.java
RtcConnConfig.java
RtcConnInfo.java
RtcImage.java
RtcStats.java
SDK.java
SenderOptions.java
SimulcastStreamConfig.java
TranscodingUser.java
TranscodingVideoStream.java
UplinkNetworkInfo.java
UserAudioSpectrumInfo.java
UserInfo.java
VideoDimensions.java
VideoEncoderConfig.java
VideoFormat.java
VideoFrame.java
VideoSubscriptionOptions.java
VideoTrackInfo.java
WatermarkRatio.java