# API 列表 (/zh-CN/api-reference/rtc/harmonyos/rtc-interface-class)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

<a id="rtc_interface_class"></a>

<a id="class_irtcengine"></a>

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## RtcEngine [#rtcengine]

RTC SDK 的基础接口类，实现实时音视频的主要功能。

<a id="class_irtcengine__detailed_desc"></a>

### 详情 [#详情]

RtcEngine 提供了 App 调用的主要方法。

### 相关参考 [#相关参考]

- [adjustAudioMixingPlayoutVolume](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_adjustaudiomixingplayoutvolume)
- [adjustAudioMixingPublishVolume](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_adjustaudiomixingpublishvolume)
- [adjustAudioMixingVolume](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_adjustaudiomixingvolume)
- [adjustPlaybackSignalVolume](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_adjustplaybacksignalvolume)
- [adjustRecordingSignalVolume](/zh-CN/api-reference/rtc/harmonyos/audio/audio-capture#api_irtcengine_adjustrecordingsignalvolume)
- [adjustUserPlaybackSignalVolume](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengine_adjustuserplaybacksignalvolume)
- [createCustomVideoTrack](/zh-CN/api-reference/rtc/harmonyos/video/video-custom-capturenrendering#api_irtcengine_createcustomvideotrack)
- [createDataStream](/zh-CN/api-reference/rtc/harmonyos/metadata/datastream#api_irtcengine_createdatastream2)
- [createMediaPlayer](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-initialize#api_irtcengine_createmediaplayer)
- [createMediaRecorder](/zh-CN/api-reference/rtc/harmonyos/recording#api_irtcengine_createmediarecorder)
- [destroyCustomVideoTrack](/zh-CN/api-reference/rtc/harmonyos/video/video-custom-capturenrendering#api_irtcengine_destroycustomvideotrack)
- [disableAudio](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengine_disableaudio)
- [disableVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengine_disablevideo)
- [enableAudio](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengine_enableaudio)
- [enableAudioVolumeIndication](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengine_enableaudiovolumeindication)
- [enableContentInspect](/zh-CN/api-reference/rtc/harmonyos/video/video-prenpro/snapshot#api_irtcengine_enablecontentinspect)
- [enableEncryption](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_enableencryption)
- [enableInEarMonitoring](/zh-CN/api-reference/rtc/harmonyos/audio/audio-capture#api_irtcengine_enableinearmonitoring2)
- [enableLocalAudio](/zh-CN/api-reference/rtc/harmonyos/audio/audio-capture#api_irtcengine_enablelocalaudio)
- [enableLocalVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengine_enablelocalvideo)
- [enableVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengine_enablevideo)
- [enableVirtualBackground](/zh-CN/api-reference/rtc/harmonyos/video/video-prenpro/virtualbackground#api_irtcengine_enablevirtualbackground2)
- [getAudioMixingCurrentPosition](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_getaudiomixingcurrentposition)
- [getAudioMixingDuration](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_getaudiomixingduration)
- [getAudioMixingPlayoutVolume](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_getaudiomixingplayoutvolume)
- [getAudioMixingPublishVolume](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_getaudiomixingpublishvolume)
- [getCallId](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_getcallid)
- [getCameraMaxZoomFactor](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_getcameramaxzoomfactor)
- [getCurrentMonotonicTimeInMs](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_getcurrentmonotonictimeinms)
- [getErrorDescription](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_geterrordescription)
- [getNativeHandle](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_getnativehandle)
- [getSdkVersion](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_getversion)
- [isCameraAutoFocusFaceModeSupported](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_iscameraautofocusfacemodesupported)
- [isCameraExposurePositionSupported](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_iscameraexposurepositionsupported)
- [isCameraExposureSupported](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_iscameraexposuresupported)
- [isCameraFaceDetectSupported](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_iscamerafacedetectsupported)
- [isCameraFocusSupported](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_iscamerafocussupported)
- [isCameraZoomSupported](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_iscamerazoomsupported)
- [isSpeakerphoneEnabled](/zh-CN/api-reference/rtc/harmonyos/device-management/audio-route#api_irtcengine_isspeakerphoneenabled)
- [joinChannel](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_joinchannel)
- [joinChannelWithOptions](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_joinchannel2)
- [leaveChannel](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_leavechannel2)
- [muteAllRemoteAudioStreams](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengine_muteallremoteaudiostreams)
- [muteAllRemoteVideoStreams](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengine_muteallremotevideostreams)
- [muteLocalAudioStream](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengine_mutelocalaudiostream)
- [muteLocalVideoStream](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengine_mutelocalvideostream)
- [muteRemoteAudioStream](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengine_muteremoteaudiostream)
- [muteRemoteVideoStream](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengine_muteremotevideostream)
- [pauseAllChannelMediaRelay](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/channel-media-relay#api_irtcengine_pauseallchannelmediarelay)
- [pauseAudioMixing](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_pauseaudiomixing)
- [pushExternalVideoFrameById](/zh-CN/api-reference/rtc/harmonyos/video/video-custom-capturenrendering#api_irtcengine_pushvideoframe3)
- [pushExternalVideoFrame](/zh-CN/api-reference/rtc/harmonyos/video/video-custom-capturenrendering#api_irtcengine_pushvideoframe4)
- [destroy](/zh-CN/api-reference/rtc/harmonyos/initialize#api_irtcengine_release)
- [renewToken](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_renewtoken)
- [resumeAllChannelMediaRelay](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/channel-media-relay#api_irtcengine_resumeallchannelmediarelay)
- [resumeAudioMixing](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_resumeaudiomixing)
- [sendStreamMessage](/zh-CN/api-reference/rtc/harmonyos/metadata/datastream#api_irtcengine_sendstreammessage)
- [setAudioMixingPosition](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_setaudiomixingposition)
- [setAudioMixingPlaybackSpeed](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_setaudiomixingplaybackspeed)
- [setAudioProfile](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengine_setaudioprofile2)
- [setAudioScenario](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengine_setaudioscenario)
- [setCameraAutoFocusFaceModeEnabled](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_setcameraautofocusfacemodeenabled)
- [setCameraCapturerConfiguration](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_setcameracapturerconfiguration)
- [setChannelProfile](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_setchannelprofile)
- [setClientRole](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_setclientrole2)
- [setDefaultAudioRouteToSpeakerphone](/zh-CN/api-reference/rtc/harmonyos/device-management/audio-route#api_irtcengine_setdefaultaudioroutetospeakerphone)
- [setEnableSpeakerphone](/zh-CN/api-reference/rtc/harmonyos/device-management/audio-route#api_irtcengine_setenablespeakerphone)
- [setExternalVideoSource](/zh-CN/api-reference/rtc/harmonyos/video/video-custom-capturenrendering#api_imediaengine_setexternalvideosource)
- [setInEarMonitoringVolume](/zh-CN/api-reference/rtc/harmonyos/audio/audio-capture#api_irtcengine_setinearmonitoringvolume)
- [setLocalRenderMode](/zh-CN/api-reference/rtc/harmonyos/video/video-rendering#api_irtcengine_setlocalrendermode2)
- [setParameters](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_setparameters)
- [setRemoteDefaultVideoStreamType](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/dual-stream#api_irtcengine_setremotedefaultvideostreamtype)
- [setRemoteRenderMode](/zh-CN/api-reference/rtc/harmonyos/video/video-rendering#api_irtcengine_setremoterendermode2)
- [setRemoteVideoStreamType](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/dual-stream#api_irtcengine_setremotevideostreamtype)
- [setupLocalVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-rendering#api_irtcengine_setuplocalvideo)
- [setupRemoteVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-rendering#api_irtcengine_setupremotevideo)
- [setVideoEncoderConfiguration](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengine_setvideoencoderconfiguration)
- [setVoiceBeautifierPreset](/zh-CN/api-reference/rtc/harmonyos/audio/audio-prenpost/audio-effect#api_irtcengine_setvoicebeautifierpreset)
- [startAudioMixing](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_startaudiomixing2)
- [startAudioRecordingWithConfiguration](/zh-CN/api-reference/rtc/harmonyos/recording#api_irtcengine_startaudiorecording3)
- [startLastmileProbeTest](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_startlastmileprobetest)
- [startLocalVideoTranscoder](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/local-transcoder#api_irtcengine_startlocalvideotranscoder)
- [startOrUpdateChannelMediaRelay](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/channel-media-relay#api_irtcengine_startorupdatechannelmediarelay)
- [startPreview](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengine_startpreview2)
- [startCameraCapture](/zh-CN/api-reference/rtc/harmonyos/video/camera-capture#api_irtcengine_startcameracapture)
- [startRtmpStreamWithoutTranscoding](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#api_irtcengine_startrtmpstreamwithouttranscoding)
- [startRtmpStreamWithTranscoding](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#api_irtcengine_startrtmpstreamwithtranscoding)
- [startScreenCapture](/zh-CN/api-reference/rtc/harmonyos/video/screencapture#api_irtcengine_startscreencapture)
- [stopAudioMixing](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_irtcengine_stopaudiomixing)
- [stopAudioRecording](/zh-CN/api-reference/rtc/harmonyos/recording#api_irtcengine_stopaudiorecording)
- [stopChannelMediaRelay](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/channel-media-relay#api_irtcengine_stopchannelmediarelay)
- [stopLastmileProbeTest](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengine_stoplastmileprobetest)
- [stopPreview](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengine_stoppreview2)
- [stopCameraCapture](/zh-CN/api-reference/rtc/harmonyos/video/camera-capture#api_irtcengine_stopcameracapture)
- [stopRtmpStream](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#api_irtcengine_stoprtmpstream)
- [stopScreenCapture](/zh-CN/api-reference/rtc/harmonyos/video/screencapture#api_irtcengine_stopscreencapture)
- [switchCamera](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#api_irtcengine_switchcamera)
- [takeSnapshot](/zh-CN/api-reference/rtc/harmonyos/video/video-prenpro/snapshot#api_irtcengine_takesnapshot)
- [updateChannelMediaOptions](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengine_updatechannelmediaoptions)
- [updateLocalTranscoderConfiguration](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/local-transcoder#api_irtcengine_updatelocaltranscoderconfiguration)
- [updateRtmpTranscoding](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#api_irtcengine_updatertmptranscoding)

<a id="class_irtcengineex"></a>

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## RtcEngineEx [#rtcengineex]

提供多频道方法的接口类。

<a id="class_irtcengineex__detailed_desc"></a>

### 详情 [#详情-1]

继承自 [RtcEngine](/zh-CN/api-reference/rtc/harmonyos/rtc-interface-class#class_irtcengine)。

### 相关参考 [#相关参考-1]

- [createDataStreamEx](/zh-CN/api-reference/rtc/harmonyos/metadata/datastream#api_irtcengineex_createdatastreamex2)
- [enableAudioVolumeIndicationEx](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengineex_enableaudiovolumeindicationex)
- [getCallIdEx](/zh-CN/api-reference/rtc/harmonyos/network#api_irtcengineex_getcallidex)
- [joinChannelEx](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengineex_joinchannelex)
- [leaveChannelEx](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengineex_leavechannelex2)
- [muteAllRemoteAudioStreamsEx](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengineex_muteallremoteaudiostreamsex)
- [muteAllRemoteVideoStreamsEx](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengineex_muteallremotevideostreamsex)
- [muteLocalAudioStreamEx](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengineex_mutelocalaudiostreamex)
- [muteLocalVideoStreamEx](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengineex_mutelocalvideostreamex)
- [muteRemoteAudioStreamEx](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengineex_muteremoteaudiostreamex)
- [muteRemoteVideoStreamEx](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#api_irtcengineex_muteremotevideostreamex)
- [setDualStreamModeEx](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/dual-stream#api_irtcengineex_setdualstreammodeex)
- [setRemoteVideoStreamTypeEx](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/dual-stream#api_irtcengineex_setremotevideostreamtypeex)
- [setRemoteVoicePositionEx](/zh-CN/api-reference/rtc/harmonyos/api-irtcengineex-setremotevoicepositionex)
- [setupRemoteVideoEx](/zh-CN/api-reference/rtc/harmonyos/video/video-rendering#api_irtcengineex_setupremotevideoex)
- [setVideoEncoderConfigurationEx](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#api_irtcengineex_setvideoencoderconfigurationex)
- [startOrUpdateChannelMediaRelayEx](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/channel-media-relay#api_irtcengineex_startorupdatechannelmediarelayex)
- [updateChannelMediaOptionsEx](/zh-CN/api-reference/rtc/harmonyos/channel#api_irtcengineex_updatechannelmediaoptionsex)
- [adjustUserPlaybackSignalVolumeEx](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#api_irtcengineex_adjustuserplaybacksignalvolumeex)

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## IRtcEngineEventHandler [#irtcengineeventhandler]

接口类 IRtcEngineEventHandler 用于 SDK 向 App 发送事件通知，App 通过继承该接口类的方法获取 SDK 的事件通知。

<a id="class_irtcengineeventhandler__detailed_desc"></a>

### 详情 [#详情-2]

该接口类的所有方法都有缺省（空）实现， App 可以根据需要只继承关心的事件。

:::caution
注意：

- 在回调方法中，App 不应该做耗时或者调用可能会引起阻塞的 API（如 `sendMessage`），否则可能影响 SDK 的运行。
- SDK 不再捕获开发者在 IRtcEngineEventHandler 类回调中自行实现的代码逻辑中的异常。你需要自行处理该异常，否则异常出现时可能引起 App 崩溃。
:::

### 相关参考 [#相关参考-2]

- [onAudioEffectFinished](/zh-CN/api-reference/rtc/harmonyos/play/audio-effect-file#callback_irtcengineeventhandler_onaudioeffectfinished)
- [onAudioMixingPositionChanged](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#callback_irtcengineeventhandler_onaudiomixingpositionchanged)
- [onAudioMixingStateChanged](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#callback_irtcengineeventhandler_onaudiomixingstatechanged)
- [onAudioPublishStateChanged](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#callback_irtcengineeventhandler_onaudiopublishstatechanged)
- [onAudioSubscribeStateChanged](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#callback_irtcengineeventhandler_onaudiosubscribestatechanged)
- [onAudioVolumeIndication](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#callback_irtcengineeventhandler_onaudiovolumeindication)
- [onCameraExposureAreaChanged](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#callback_irtcengineeventhandler_oncameraexposureareachanged)
- [onCameraFocusPointChanged](/zh-CN/api-reference/rtc/harmonyos/device-management/video-device#callback_irtcengineeventhandler_oncamerafocusareachanged)
- [onChannelMediaRelayStateChanged](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/channel-media-relay#callback_irtcengineeventhandler_onchannelmediarelaystatechanged)
- [onClientRoleChanged](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onclientrolechanged)
- [onClientRoleChangeFailed](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onclientrolechangefailed)
- [onConnectionLost](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onconnectionlost)
- [onConnectionStateChanged](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onconnectionstatechanged)
- [onEncryptionError](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onencryptionerror)
- [onError](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onerror)
- [onFirstLocalVideoFrame](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onfirstlocalvideoframe)
- [onFirstRemoteVideoFrame](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onfirstremotevideoframe)
- [onJoinChannelSuccess](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onjoinchannelsuccess)
- [onLastmileProbeResult](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onlastmileproberesult)
- [onLastmileQuality](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onlastmilequality)
- [onLeaveChannel](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onleavechannel)
- [onLocalAudioStateChanged](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#callback_irtcengineeventhandler_onlocalaudiostatechanged)
- [onLocalAudioStats](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#callback_irtcengineeventhandler_onlocalaudiostats)
- [onLocalUserRegistered](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onlocaluserregistered)
- [onLocalVideoStateChanged](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onlocalvideostatechanged)
- [onLocalVideoStats](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onlocalvideostats)
- [onLocalVideoTranscoderError](/zh-CN/api-reference/rtc/harmonyos/video/video-codec/local-transcoder#callback_irtcengineeventhandler_onlocalvideotranscodererror)
- [onNetworkQuality](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onnetworkquality)
- [onPermissionError](/zh-CN/api-reference/rtc/harmonyos/network#callback_irtcengineeventhandler_onpermissionerror)
- [onRejoinChannelSuccess](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onrejoinchannelsuccess)
- [onRemoteAudioStateChanged](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#callback_irtcengineeventhandler_onremoteaudiostatechanged)
- [onRemoteAudioStats](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#callback_irtcengineeventhandler_onremoteaudiostats)
- [onRemoteVideoStateChanged](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onremotevideostatechanged)
- [onRemoteVideoStats](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onremotevideostats)
- [onRequestToken](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onrequesttoken)
- [onRtcStats](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onrtcstats)
- [onRtmpStreamingEvent](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#callback_irtcengineeventhandler_onrtmpstreamingevent)
- [onRtmpStreamingStateChanged](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#callback_irtcengineeventhandler_onrtmpstreamingstatechanged)
- [onSnapshotTaken](/zh-CN/api-reference/rtc/harmonyos/video/video-prenpro/snapshot#callback_irtcengineeventhandler_onsnapshottaken)
- [onStreamMessage](/zh-CN/api-reference/rtc/harmonyos/metadata/datastream#callback_irtcengineeventhandler_onstreammessage)
- [onStreamMessageError](/zh-CN/api-reference/rtc/harmonyos/metadata/datastream#callback_irtcengineeventhandler_onstreammessageerror)
- [onTokenPrivilegeWillExpire](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_ontokenprivilegewillexpire)
- [onTranscodingUpdated](/zh-CN/api-reference/rtc/harmonyos/cloud-media-relay/media-push#callback_irtcengineeventhandler_ontranscodingupdated)
- [onUserEnableVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onuserenablevideo)
- [onUserJoined](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onuserjoined)
- [onUserMuteAudio](/zh-CN/api-reference/rtc/harmonyos/audio/audio-basic#callback_irtcengineeventhandler_onusermuteaudio)
- [onUserMuteVideo](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onusermutevideo)
- [onUserOffline](/zh-CN/api-reference/rtc/harmonyos/channel#callback_irtcengineeventhandler_onuseroffline)
- [onVideoPublishStateChanged](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onvideopublishstatechanged)
- [onVideoSizeChanged](/zh-CN/api-reference/rtc/harmonyos/video/video-basic#callback_irtcengineeventhandler_onvideosizechanged)
- [onVideoSubscribeStateChanged](/zh-CN/api-reference/rtc/harmonyos/publishnsubscribe#callback_irtcengineeventhandler_onvideosubscribestatechanged)

<a id="class_imediaplayer"></a>

<a id="ariaid-title5"></a>

## IMediaPlayer [#imediaplayer]

提供媒体播放器功能的类，支持多实例。

### 相关参考 [#相关参考-3]

- [adjustPlayoutVolume](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_adjustplayoutvolume)
- [adjustPublishSignalVolume](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_adjustpublishsignalvolume)
- [getDuration](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getduration)
- [getMediaPlayerId](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getmediaplayerid)
- [getMute](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getmute)
- [getPlayoutVolume](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getplayoutvolume)
- [getPlayPosition](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getplayposition)
- [getPlaySrc](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getplaysrc)
- [getPublishSignalVolume](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getpublishsignalvolume)
- [getState](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getstate)
- [getStreamCount](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getstreamcount)
- [getStreamInfo](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#api_imediaplayer_getstreaminfo)
- [mute](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_mute)
- [open](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-open#api_imediaplayer_open)
- [openWithMediaSource](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-open#api_imediaplayer_openwithmediasource)
- [pause](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_pause)
- [play](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_play)
- [playPreloadedSrc](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_playpreloadedsrc)
- [preloadSrc](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-open#api_imediaplayer_preloadsrc)
- [resume](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_resume)
- [seek](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_seek)
- [selectAudioTrack](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_selectaudiotrack)
- [selectMultiAudioTrack](/zh-CN/api-reference/rtc/harmonyos/play/audio-mixing#api_imediaplayer_selectmultiaudiotrack)
- [setAudioPitch](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setaudiopitch)
- [setAudioDualMonoMode](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setaudiodualmonomode)
- [setLoopCount](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setloopcount)
- [setPlaybackSpeed](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setplaybackspeed)
- [setPlayerOption](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setplayeroption)
- [setPlayerOptionString](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setplayeroption2)
- [setRenderMode](/zh-CN/api-reference/rtc/harmonyos/video/video-rendering#api_imediaplayer_setrendermode)
- [setView](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setview)
- [stop](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-control#api_imediaplayer_stop)
- [switchSrc](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-open#api_imediaplayer_switchsrc)
- [unloadSrc](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-open#api_imediaplayer_unloadsrc)

<a id="class_imediaplayersourceobserver"></a>

<a id="ariaid-title6"></a>

## IMediaPlayerObserver [#imediaplayerobserver]

提供媒体播放器的回调。

### 相关参考 [#相关参考-4]

- [onAudioVolumeIndication](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onaudiovolumeindication)
- [onMetaData](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onmetadata)
- [onPlayBufferUpdated](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplaybufferupdated)
- [onPlayerCacheStats](/zh-CN/api-reference/rtc/harmonyos/callback-imediaplayersourceobserver-onplayercachestats)
- [onPlayerEvent](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayerevent)
- [onPlayerInfoUpdated](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayerinfoupdated)
- [onPlayerPlaybackStats](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-info#callback_imediaplayersourceobserver_onplayerplaybackstats)
- [onPlayerStateChanged](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayersourcestatechanged)
- [onPlayerSrcInfoChanged](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayersrcinfochanged)
- [onPositionChanged](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onpositionchanged)
- [onPreloadEvent](/zh-CN/api-reference/rtc/harmonyos/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onpreloadevent)

<a id="class_imediarecorder"></a>

<a id="ariaid-title7"></a>

## AgoraMediaRecorder [#agoramediarecorder]

提供本地及远端音视频录制功能的类。

### 相关参考 [#相关参考-5]

- [setMediaRecorderObserver](/zh-CN/api-reference/rtc/harmonyos/recording#api_imediarecorder_setmediarecorderobserver)
- [startRecording](/zh-CN/api-reference/rtc/harmonyos/recording#api_imediarecorder_startrecording)
- [stopRecording](/zh-CN/api-reference/rtc/harmonyos/recording#api_imediarecorder_stoprecording)

<a id="class_imediarecorderobserver"></a>

<a id="ariaid-title8"></a>

## IMediaRecorderCallback [#imediarecordercallback]

包含音视频录制的事件。

### 相关参考 [#相关参考-6]

- [onRecorderStateChanged](/zh-CN/api-reference/rtc/harmonyos/recording#callback_imediarecorderobserver_onrecorderstatechanged)
- [onRecorderInfoUpdated](/zh-CN/api-reference/rtc/harmonyos/recording#callback_imediarecorderobserver_onrecorderinfoupdated)

<a id="class_imusiccontentcentereventhandler"></a>

<a id="ariaid-title9"></a>

## IMusicContentCenterEventHandler [#imusiccontentcentereventhandler]

[IMusicContentCenterEventHandler](/zh-CN/api-reference/rtc/harmonyos/rtc-interface-class#class_imusiccontentcentereventhandler) 接口类，用于 SDK 向客户端发送音乐内容中心事件通知。

<a id="class_imusicplayer"></a>

<a id="ariaid-title10"></a>

## IAgoraMusicPlayer [#iagoramusicplayer]

继承自 [IMediaPlayer](/zh-CN/api-reference/rtc/harmonyos/rtc-interface-class#class_imediaplayer) 类，提供音乐播放器的相关方法。

### 相关参考 [#相关参考-7]

- [setPlayMode](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusicplayer_setplaymode)

<a id="class_imusiccontentcenter"></a>

<a id="ariaid-title11"></a>

## IAgoraMusicContentCenter [#iagoramusiccontentcenter]

[IAgoraMusicContentCenter](/zh-CN/api-reference/rtc/harmonyos/rtc-interface-class#class_imusiccontentcenter) 接口类提供音乐内容中心的相关方法。

### 相关参考 [#相关参考-8]

- [initialize](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_initialize)
- [renewToken](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_renewtoken)
- [release](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_release)
- [removeCache](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_removecache)
- [registerEventHandler](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_registereventhandler)
- [unregisterEventHandler](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_unregistereventhandler)
- [createMusicPlayer](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_createmusicplayer)
- [getCaches](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_getcaches)
- [getInternalSongCode](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_getinternalsongcode)
- [getMusicCharts](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_getmusiccharts)
- [getMusicCollectionByMusicChartId](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_getmusiccollectionbymusicchartid2)
- [getSongSimpleInfo](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_getsongsimpleinfo)
- [searchMusic](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_searchmusic2)
- [preload](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusicontentcenter_preload2)
- [isPreloaded](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_ispreloaded)
- [getLyric](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_getlyric)
- [destroy](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_destroy)
- [destroyMusicPlayer](/zh-CN/api-reference/rtc/harmonyos/play/drm#api_imusiccontentcenter_destroymusicplayer)