Video SDK for C++
- API Overview
  Agora provides ensured quality of experience (QoE) for worldwide Internet-based voice and video communications through SD-RTN™.
- IRtcEngine
  The basic interface of the Agora SDK that implements the core functions of real-time communication.
- IRtcEngineEx
  This interface class contains multi-channel methods.
- IRtcEngineEventHandler
  The SDK uses the IRtcEngineEventHandler interface to send event notifications to your app. Your app can get those notifications through methods that inherit this interface.
- IMediaPlayer
  This class provides media player functions and supports multiple instances.
- IAudioEncodedFrameObserver
  The encoded audio observer.
- IAudioDeviceManager
  Audio device management methods.
- IAudioDeviceCollection
  The IAudioDeviceCollection interface. You can get the information of audio devices with this interface.
- IVideoDeviceManager
  Video device management methods.
- IVideoDeviceCollection
  You can get the information of video devices with this interface.
- IMediaEngine
  The IMediaEngine class.
- IMediaPlayerCacheManager
  This class provides methods to manage cached media files.
- IMediaPlayerCustomDataProvider
  The callback for custom media resource files.
- IMediaPlayerSourceObserver
  Provides callbacks for media players.
- IAudioPcmFrameSink
  This class is used to get raw PCM audio.
- IAudioFrameObserverBase
  The audio frame observer.
- IAudioSpectrumObserver
  The audio spectrum observer.
- IPacketObserver
  The definition of IPacketObserver.
- IMetadataObserver
  The metadata observer.
- IVideoEncodedFrameObserver
  Receives encoded video images.
- IVideoFrameObserver
  The IVideoFrameObserver class.
- IFaceInfoObserver
  Facial information observer.
- ILocalSpatialAudioEngine
  This class calculates user positions through the SDK to implement the spatial audio effect.
- IScreenCaptureSourceList
  The IScreenCaptureSourceList class. This class is returned in the getScreenCaptureSources method.
- Struct and Enum
  This page lists all the definitions of Struct and the enums for C++.
- API Sunset Notice
  This page introduces the deprecated and deleted APIs in the SDK.

IAudioSpectrumObserver

The audio spectrum observer.

onLocalAudioSpectrum

Gets the statistics of a local audio spectrum.

virtual bool onLocalAudioSpectrum(const AudioSpectrumData& data) = 0;

After successfully calling registerAudioSpectrumObserver to implement the onLocalAudioSpectrum callback in IAudioSpectrumObserver and calling enableAudioSpectrumMonitor to enable audio spectrum monitoring, the SDK triggers this callback as the time interval you set to report the received remote audio data spectrum before encoding.

Parameters

data: The audio spectrum data of the local user. See AudioSpectrumData.

Returns

Whether the spectrum data is received:

true: Spectrum data is received.
false: No spectrum data is received.

onRemoteAudioSpectrum

Gets the remote audio spectrum.

virtual bool onRemoteAudioSpectrum(const UserAudioSpectrumInfo * spectrums, unsigned int spectrumNumber) = 0;

After successfully calling registerAudioSpectrumObserver to implement the onRemoteAudioSpectrum callback in the IAudioSpectrumObserver and calling enableAudioSpectrumMonitor to enable audio spectrum monitoring, the SDK will trigger the callback as the time interval you set to report the received remote audio data spectrum.

Parameters

spectrums: The audio spectrum information of the remote user, see UserAudioSpectrumInfo. The number of arrays is the number of remote users monitored by the SDK. If the array is null, it means that no audio spectrum of remote users is detected.
spectrumNumber: The number of remote users.

Returns

Whether the spectrum data is received:

true: Spectrum data is received.
false: No spectrum data is received.