Data types

Directory

Details

• AliRtcAudioPlayingErrorCode: The error codes for music accompaniment playback. (iOS only)

  Enumeration Name	Description
  AliRtcAudioPlayingNoError	Normal state.
  AliRtcAudioPlayingOpenFailed	Failed to open the file.
  AliRtcAudioPlayingDecodeFailed	Encoding failed.

• AliRtcAudioPlayingStateCode: The playback states for music accompaniment. (iOS only)

  Enumeration	Description
  AliRtcAudioPlayingStarted	Playing.
  AliRtcAudioPlayingStopped	Playback stopped.
  AliRtcAudioPlayingPaused	Playback paused.
  AliRtcAudioPlayingResumed	Playback resumed.
  AliRtcAudioPlayingEnded	Playback finished.
  AliRtcAudioPlayingBuffering	Buffering.
  AliRtcAudioPlayingBufferingEnd	Buffering finished.
  AliRtcAudioPlayingFailed	Playback failed.

• AliRtcUserVolumeInfo: The volume information of a user.

  Parameter	Type	Description
  uid	NSString * _Nonnull	The UID of the current user. Valid values: 0 indicates local. 1: The remote mixed stream. Other values: A remote user.
  volume	int	The volume in the current callback.
  speech_state	BOOL	Indicates whether the user is speaking. `true` means the user is speaking. `false` means the user is not speaking.

• AliRtcAudioDataSample: An audio sample.

  Parameter	Type	Description
  dataPtr	long	The UID of the current user. Valid values: 0: Local. 1: The remote mixed stream. Other values: A remote user.
  numOfSamples	int	The number of sample points for each channel.
  bytesPerSample	int	The number of bytes per sample point. For PCM, this is typically 16 bits, which is two bytes.
  numOfChannels	int	The number of channels. Valid values: 1: Mono. 2: Stereo.
  samplesPerSec	int	The number of sample points per second for each channel. This is the sample rate.

• AliRtcVideoDataSample: A video sample.

  Parameter	Type	Description
  format	AliRtcVideoFormat	Video data format.
  type	AliRtcBufferType	Video data type.
  pixelBuffer	CVPixelBufferRef _Nullable	The pixel buffer data.
  dataPtr	long	Pointer to the YUV data.
  dataYPtr	long	Pointer to the Y component.
  dataUPtr	long	Pointer to the U component.
  dataVPtr	long	Pointer to the V component.
  dataLength	long	The data size.
  strideY	int	The stride of the Y buffer in the YUV data.
  strideU	int	The stride of the U buffer in the YUV data.
  strideV	int	The stride of the V buffer in the YUV data.
  height	int	The height of the video frame.
  width	int	The width of the video frame.
  rotation	int	The rotation angle of the video frame.
  timeStamp	long long	Timestamp.

• AliRtcChannelProfile: The channel profile.

  Enumeration	Description
  AliRtcCommunication	Communication mode.
  AliRtcInteractivelive	Interactive mode.
  AliRtcInteractiveWithLowLatencyLive	Low-latency interactive streaming mode.

• AliRtcClientRole: The role of a user.

  Enumeration	Description
  AliRtcClientRoleInteractive	Streamer role.
  AliRtcClientRolelive	Viewer role.

• AliRtcStats: The statistics of a session.

  Parameter	Type	Description
  sent_kbitrate	long long	The sending bitrate.
  rcvd_kbitrate	long long	The receiving bitrate.
  sent_bytes	long long	The number of bytes sent.
  rcvd_bytes	long long	The number of bytes received.
  systemCpuUsage	float	The system CPU usage.
  cpu_usage	float	The CPU usage of the RTC process.
  video_rcvd_kbitrate	long	The video receiving bitrate.
  video_sent_kbitrate	long	The video sending bitrate.
  call_duration	long	The call duration in seconds.
  sent_loss_rate	long	The packet loss rate from the client to the server.
  sent_loss_pkts	long long	The number of lost packets from the client to the server.
  sent_expected_pkts	long long	The total number of packets from the client to the server.
  rcvd_loss_rate	long long	The downlink packet loss rate from the client to the server.
  rcvd_loss_pkts	long long	The number of lost downlink packets from the client to the server.
  rcvd_expected_pkts	long long	The total number of downlink packets from the client to the server.
  lastmile_delay	int	The delay duration in milliseconds.

• AliRtcLocalVideoStats: The statistics of a local video stream.

  Parameter	Type	Description
  track	AliRtcVideoTrack	The stream type.
  sent_bitrate	unsigned int	The publishing bitrate.
  sent_fps	unsigned int	The publishing frame rate.
  encode_fps	unsigned int	The encoding frame rate.

• AliRtcRemoteVideoStats: The statistics of a remote video stream.

  Parameter	Type	Description
  userId	NSString * _Nonnull	The user ID.
  track	AliRtcVideoTrack	The video stream type.
  width	unsigned int	The width.
  height	unsigned int	High
  decode_fps	unsigned int	The encoder output frame rate.
  render_fps	unsigned int	The renderer output frame rate.
  frozen_times	unsigned int	The number of stutters.

• AliRtcLocalAudioStats: The statistics of a local audio stream.

  Parameter	Type	Description
  track	AliRtcAudioTrack	The audio stream type.
  sent_bitrate	int	The sending bitrate in Kbps.
  sent_samplerate	int	The sending sample rate.
  num_channel	int	The number of sound channels.

• AliRtcRemoteAudioStats: The statistics of a remote audio stream.

  Parameter	Type	Description
  userId	NSString * _Nonnull	The UID of the remote user.
  track	AliRtcAudioTrack	The audio stream type.
  quality	unsigned int	The audio quality. For more information, see AliRtcTranportAudioQuality.
  audio_loss_rate	unsigned int	The audio frame loss rate during the callback period.
  rcvd_bitrate	unsigned int	The instantaneous bitrate of the received stream in Kbps.
  totalFrozenTimes	unsigned int	The number of stutters.
  network_transport_delay	unsigned int	The network latency from the sender to the receiver in milliseconds.
  jitter_buffer_delay	unsigned int	The network latency from the receiver to the jitter buffer in milliseconds.

• AliRtcFeedbackType: The feedback types of the SDK.

  Enumeration	Description
  AliRtcFeedbackVideoDeviceFail	Video device issue.
  AliRtcFeedbackVideoNotRender	No video display.
  AliRtcFeedbackAudioDeviceFail	Audio device issue.
  AliRtcFeedbackAudioNotRender	No audio.
  AliRtcFeedbackAudioEchoError	Abnormal audio echo.
  AliRtcFeedbackChannelTypeError	The meeting status is abnormal. For example, an error occurs when a user joins or leaves the meeting.
  AliRtcFeedbackSdkTypeError	Other abnormal SDK states.
  AliRtcFeedbackNetworkUnfluent	Network stutter issue.
  AliRtcFeedbackVideoBlurring	Video clarity issue.
  AliRtcFeedbackUnkonw	Unknown type.

• AliRtcChannelRelayEvent: Events related to cross-channel stream forwarding.

  Enumeration	Description
  AliRtcChannelRelayStart	Start.
  AliRtcChannelRelayUpdate	Update.
  AliRtcChannelRelayStop	Stop.

• AliRtcChannelRelayState: The state of cross-channel stream forwarding.

  Enumeration name	Description
  AliRtcChannelRelayStateInit	Initialization.
  AliRtcChannelRelayStateConnecting	Connecting.
  AliRtcChannelRelayStateRunning	Forwarding.
  AliRtcChannelRelayStateFailure	Forwarding failed.

• AliRtcChannelRelayConfiguration: The configuration for cross-channel stream forwarding.

  Parameter	Type	Description
  destChannelInfos	NSDictionary<NSString*,AliRtcAuthInfo*> *_Nullable	A collection of authentication information for the destination channels.

• AliRtcVideoObserPosition: The position where video data is output.

  Enumeration Name	Description
  AliRtcPositionPostCapture	Captured video data. The corresponding output callback is onCaptureVideoSample.
  AliRtcPositionPreRender	Rendered video data. The corresponding output callback is onRemoteVideoSample.
  AliRtcPositionPreEncoder	Pre-encoded video data. The corresponding output callback is onPreEncodeVideoSample.

• AliRtcVideoFormat: The video data format.

  Enumeration	Description
  AliRtcVideoFormat_UNKNOW	Unknown.
  AliRtcVideoFormat_BGRA	BGRA.
  AliRtcVideoFormat_I420	I420.
  AliRtcVideoFormat_NV21	NV21.
  AliRtcVideoFormat_NV12	NV12.
  AliRtcVideoFormat_RGBA	RGBA.
  AliRtcVideoFormat_I422	I422.
  AliRtcVideoFormat_ARGB	ARGB.
  AliRtcVideoFormat_ABGR	ABGR.
  AliRtcVideoFormat_RGB24	RGB24.
  AliRtcVideoFormat_BGR24	BGR24.
  AliRtcVideoFormat_RGB565	RGB565.

• AliRtcConnectionStatus: The network connection status.

  Enumeration	Description
  AliRtcConnectionStatusInit	Initialization is complete.
  AliRtcConnectionStatusDisconnected	The network connection is disconnected.
  AliRtcConnectionStatusConnecting	Establishing a network connection.
  AliRtcConnectionStatusConnected	The network is connected.
  AliRtcConnectionStatusReconnecting	Re-establishing a network connection.
  AliRtcConnectionStatusFailed	The network connection failed.

• AliRtcConnectionStatusChangeReason: The reason for a change in the network connection status.

  Enumeration	Description
  AliRtcConnectionChangedDummyReason	Unknown reason.
  AliRtcConnectionChangedMediaPathChanged	The media channel changed.
  AliRtcConnectionChangedSignalingHeartbeatTimeout	Heartbeat timeout.
  AliRtcConnectionChangedSignalingHeartbeatAlive	Heartbeat recovered.
  AliRtcConnectionChangedSignalingHttpdnsResolved	DNS resolution succeeded.
  AliRtcConnectionChangedSignalingHttpdnsFailure	DNS resolution failed.
  AliRtcConnectionChangedSignalingGslbFailure	GSLB request failed.
  AliRtcConnectionChangedSignalingGslbSucccess	GSLB request succeeded.
  AliRtcConnectionChangedSignalingJoinChannelFailure	Failed to join the channel.
  AliRtcConnectionChangedSignalingJoinChannelSuccess	Joined the channel successfully.
  AliRtcConnectionChangedSignalingLeaveRoom	Left the channel.
  AliRtcConnectionChangedSignalingConnecting	Establishing a signaling connection.

• AliRtcVideoTrack: The video stream type.

  Enumeration	Description
  AliRtcVideoTrackNo	No video stream.
  AliRtcVideoTrackCamera	Camera stream.
  AliRtcVideoTrackScreen	Screen sharing stream.
  AliRtcVideoTrackBoth	Both camera and screen sharing.

• AliRtcPublishState: The state of a stream ingest.

  Enumeration	Description
  AliRtcStatsPublishIdle	Initial state.
  AliRtcStatsNoPublish	Not ingesting stream.
  AliRtcStatsPublishing	Ingesting stream.
  AliRtcStatsPublished	Stream ingested.

• AliRtcSubscribeState: The subscription state.

  Enumeration	Description
  AliRtcStatsSubscribeIdle	Initial state.
  AliRtcStatsNoSubscribe	Not subscribed.
  AliRtcStatsSubscribing	Subscribing.
  AliRtcStatsSubscribed	Subscribed.

• AliRtcUserOfflineReason: The reason why a user goes offline.

  Enumeration	Description
  AliRtcUserOfflineQuit	The user left voluntarily.
  AliRtcUserOfflineDropped	The user was dropped due to a timeout because no data packets were received for an extended period.
  AliRtcUserOfflineBecomeAudience	Triggered when the user role switches from streamer to viewer.

• AliRtcVideoStreamType: The camera stream type.

  Enumeration	Description
  AliRtcVideoStreamTypeNone	No video stream.
  AliRtcVideoStreamTypeHigh	High-volume stream.
  AliRtcVideoStreamTypeLow	Small stream

• AliRtcAudioTrack: The audio stream type.

  Enumeration	Description
  AliRtcAudioTrackNo	No audio stream.
  AliRtcAudioTrackMic	Microphone stream.

• AliRtcNetworkQuality: The network quality.

  Enumeration	Description
  Network_Excellent	The network is excellent, with good fluency and clarity.
  Network_Good	The network is good. Fluency and clarity are similar to excellent.
  Network_Poor	Poor network connectivity can result in some loss of audio and video smoothness and definition, but communication is not affected.
  Network_Bad	The network is poor. Video stutters severely, but audio communication is normal.
  Network_VeryBad	The network is very poor. Communication is almost impossible.
  Network_Disconnected	The network is disconnected.
  Network_Unknow	Unknown reason.

• AliRtcOrientationMode: The screen orientation mode. (iOS only)

  Enumeration	Description
  AliRtcOrientationModePortrait	Fixed portrait mode.
  AliRtcOrientationModeLandscapeLeft	Fixed landscape left mode.
  AliRtcOrientationModePortraitUpsideDown	Fixed upside-down portrait mode.
  AliRtcOrientationModeLandscapeRight	Fixed landscape right mode.
  AliRtcOrientationModeAuto	Adaptive orientation mode.

• AliRtcAudioSessionOperationRestriction: The SDK's control permissions for the audio session. (iOS only)

  Enumeration	Description
  AliRtcAudioSessionOperationRestrictionNone	No restrictions. The SDK has full control over the AVAudioSession.
  AliRtcAudioSessionOperationRestrictionSetCategory	The SDK cannot modify the Category of the AVAudioSession.
  AliRtcAudioSessionOperationRestrictionConfigureSession	The SDK cannot modify the configuration of the AVAudioSession, including its Category, Mode, and CategoryOptions.
  AliRtcAudioSessionOperationRestrictionDeactivateSession	The SDK cannot deactivate the AVAudioSession. The AVAudioSession remains active when the user leaves the channel.

• AliRtcRenderMode: The rendering mode.

  Enumeration	Description
  AliRtcRenderModeAuto	Automatic.
  AliRtcRenderModeStretch	Stretches to fill the view without maintaining the video aspect ratio.
  AliRtcRenderModeFill	Scales while maintaining the video aspect ratio, filling with black bars.
  AliRtcRenderModeClip	Scales while maintaining the video aspect ratio, and clips to fit the view.

• AliRtcRenderMirrorMode: The mirror mode for rendering.

  Enumeration	Description
  AliRtcRenderMirrorModeOnlyFront	Only the front camera preview is mirrored. Others are not mirrored.
  AliRtcRenderMirrorModeAllEnabled	All are mirrored.
  AliRtcRenderMirrorModeAllDisable	None are mirrored.

• AliRtcRotationMode: The rotation angle.

  Enumeration	Description
  AliRtcRotationMode_0	No rotation.
  AliRtcRotationMode_90	Rotate 90 degrees.
  AliRtcRotationMode_180	Rotate 180 degrees.
  AliRtcRotationMode_270	Rotate 270 degrees.

• AliRtcLogLevel: The log level.

  Enumeration name	Description
  AliRtcLogLevelInfo	Standard
  AliRtcLogLevelWarn	Warning.
  AliRtcLogLevelError	Error.
  AliRtcLogLevelFatal	Fatal.
  AliRtcLogLevelNone	None.

• AliRtcAudioNumChannel: The number of audio channels.

  Enumeration	Description
  AliRtcMonoAudio	Mono audio.
  AliRtcStereoAudio	Stereo audio.

• AliRtcAudioSampleRate: The audio recording sample rate.

  Enumeration	Description
  AliRtcAudioSampleRate_8000	Sample rate of 8000 Hz.
  AliRtcAudioSampleRate_11025	Sample rate of 11025 Hz.
  AliRtcAudioSampleRate_16000	Sample rate of 16000 Hz.
  AliRtcAudioSampleRate_22050	Sample rate of 22050 Hz.
  AliRtcAudioSampleRate_32000	Sample rate of 32000 Hz.
  AliRtcAudioSampleRate_44100	Sample rate of 44100 Hz.
  AliRtcAudioSampleRate_48000	Sample rate of 48000 Hz.

• AliRtcRecordType: The recording type.

  Enumeration Name	Description
  AliRtcRecordTypeAudio	Audio-only recording.

• AliRtcRecordFormat: The recording format.

  Enumeration	Description
  AliRtcRecordFormatAAC	AAC file.
  AliRtcRecordFormatWAV	WAV file.

• AliRtcAudioQuality: The quality of recorded audio.

  Enumeration	Description
  AliRtcAudioQualityLow	Low.
  AliRtcAudioQualityMidium	In progress.
  AliRtcAudioQualityHigh	High.

• AliRtcVideoQuality: The quality of recorded video.

  Enumeration	Description
  AliRtcVideoQualityDefault	Default. Same as the captured video quality.

• AliRtcTranportAudioQuality: The audio quality for transport.

  Enumeration	Description
  AliRtcAudioQulityUnknow	Unknown quality.
  AliRtcAudioQulityExcellent	Excellent quality.
  AliRtcAudioQulityGood	Subjective user experience is similar to excellent, but the bitrate may be slightly lower.
  AliRtcAudioQulityPoor	The user experience is degraded, but communication is unaffected.
  AliRtcAudioQulityBad	Communication is barely possible but not smooth.
  AliRtcAudioQulityVeryBad	The network quality is very poor. Communication is almost impossible.
  AliRtcAudioQulityNetworkDisconnected	The network connection is disconnected. Communication is impossible.

• AliRtcAudioProfile: The audio quality mode.

  Enumeration	Description
  AliRtcEngineLowQualityMode	Low audio quality mode.
  AliRtcEngineBasicQualityMode	Standard audio quality mode.
  AliRtcEngineHighQualityMode	High audio quality mode.
  AliRtcEngineStereoHighQualityMode	Stereo high audio quality mode.
  AliRtcEngineSuperHighQualityMode	Super high audio quality mode.
  AliRtcEngineStereoSuperHighQualityMode	Stereo super high audio quality mode.

• AliRtcAudioScenario: The audio scenario mode.

  Enumeration name	Description
  AliRtcSceneDefaultMode	Default scenario. Recommended for general audio and video communication scenarios.
  AliRtcSceneEducationMode	Education scenario. Prioritizes audio continuity and stability.
  AliRtcSceneMediaMode	Media scenario. Preserves human voice and music quality. Recommended for co-streaming in live channels.
  AliRtcSceneMusicMode	Music scenario. High-fidelity music quality. Recommended for scenarios with high music quality requirements, such as musical instrument lessons.
  AliRtcSceneChatroomMode	Chat room scenario. Suitable for chat scenarios where users frequently join and leave with their microphones on.

• AliRtcMuteLocalAudioMode: The local audio muting mode.

  Enumeration	Description
  AliRtcMuteAudioModeDefault	Default mode (mutes all audio, including microphone and external audio input).
  AliRtcMuteAllAudioMode	Mutes all audio (including microphone and external audio input).
  AliRtcMuteOnlyMicAudioMode	Mutes only the microphone.
  AliRtcMuteLocalAudioMax	Placeholder.

• AliRtcRecordAudioConfig: The audio recording settings.

  Parameter	Type	Description
  sampleRate	AliRtcAudioSampleRate	The audio sample rate.
  quality	AliRtcAudioQuality	The audio quality.
  enableRecordExternalRenderPCM	bool	Indicates whether to record external PCM input rendering data.

• AliRtcRecordVideoConfig: The video recording settings.

  Parameter	Type	Description
  quality	AliRtcVideoQuality	The video quality.

• AliRtcBeautyConfig: The basic retouching settings.

  Parameter	Type	Description
  whiteningLevel	float	Whitening level. The value ranges from 0 to 1. A larger value provides a stronger whitening effect.
  smoothnessLevel	float	Skin smoothing level. The value ranges from 0 to 1. A larger value provides a stronger smoothing effect.

• AliRtcOnByeType: The enumeration of OnBye types.

  Enumeration	Description
  AliRtcOnByeBeKickedOut	Kicked out.
  AliRtcOnByeChannelTerminated	The channel has ended. You must leave the channel.
  AliRtcOnByeUserReplaced	A user with the same UID joined the channel from another device. The current device is forced offline.

• AliRtcAudioEffectVoiceChangerMode: The voice changer effect modes.

  Enumeration	Description
  AliRtcSdk_AudioEffect_Voice_Changer_OFF	Off.
  AliRtcSdk_AudioEffect_Voice_Changer_Oldman	Old man.
  AliRtcSdk_AudioEffect_Voice_Changer_Babyboy	Baby boy.
  AliRtcSdk_AudioEffect_Voice_Changer_Babygirl	Baby girl.
  AliRtcSdk_AudioEffect_Voice_Changer_Robot	Robot.
  AliRtcSdk_AudioEffect_Voice_Changer_Daimo	Devil.
  AliRtcSdk_AudioEffect_Voice_Changer_Ktv	KTV.
  AliRtcSdk_AudioEffect_Voice_Changer_Echo	Echo.
  AliRtcSdk_AudioEffect_Voice_Changer_MAX	Placeholder. No meaning.

• AliRtcAudioEffectReverbMode: The reverb effect modes.

  Enumeration	Description
  AliRtcAudioEffectReverb_Off	Off.
  AliRtcAudioEffectReverb_Vocal_I	Vocal I.
  AliRtcAudioEffectReverb_Vocal_II	Vocal II.
  AliRtcAudioEffectReverb_Bathroom	Bathhouse
  AliRtcAudioEffectReverb_Small_Room_Bright	Bright small room.
  AliRtcAudioEffectReverb_Small_Room_Dark	Dark small room.
  AliRtcAudioEffectReverb_Medium_Room	Medium room.
  AliRtcAudioEffectReverb_Large_Room	Large room.
  AliRtcAudioEffectReverb_Church_Hall	Church aisle
  AliRtcAudioEffectReverb_Cathedral	Cathedral.
  AliRtcAudioEffectReverb_Mode_Max	Placeholder. No meaning.

• AliRtcAudioEffectReverbParamType: The reverb effect parameters.

  Enumeration	Description
  AliRtcAudioEffectReverb_Room_Size	Room size. The value ranges from 0 to 100.
  AliRtcAudioEffectReverb_Pre_Delay	Pre-delay in ms. The value ranges from 0 to 200.
  AliRtcAudioEffectReverb_Revetberance	Reverberance. The value ranges from 0 to 100.
  AliRtcAudioEffectReverb_Hf_Damping	Damping. The value ranges from 0 to 100.
  AliRtcAudioEffectReverb_Tone_Low	Low tone. The value ranges from 0 to 100.
  AliRtcAudioEffectReverb_Tone_High	High tone. The value ranges from 0 to 100.
  AliRtcAudioEffectReverb_Dry_Gain	Dry gain. The value ranges from -20 to 10.
  AliRtcAudioEffectReverb_Wet_Gain	Wet gain. The value ranges from -20 to 10.
  AliRtcAudioEffectReverb_Type_Max	Placeholder. No meaning.

• AliRtcAudioRouteType: The audio route. (iOS only)

  Enumeration	Description
  AliRtcAudioRouteTypeDefault	Default audio route.
  AliRtcAudioRouteTypeHeadset	Headset.
  AliRtcAudioRouteTypeEarpiece	Earpiece.
  AliRtcAudioRouteTypeHeadsetNoMic	Headset without a microphone.
  AliRtcAudioRouteTypeSpeakerphone	Phone speaker.
  AliRtcAudioRouteTypeLoudSpeaker	External speaker.
  AliRtcAudioRouteTypeBlueTooth	Bluetooth headset.

• AliVideoCanvas: The rendering canvas.

  Parameter	Type	Description
  view	UIView * _Nonnull	The rendering view. Cannot be nil.
  renderMode	AliRtcRenderMode	The rendering mode. The default is AliRtcRenderModeAuto.
  mirrorMode	AliRtcRenderMirrorMode	The mirror mode. The default is AliRtcRenderMirrorModeOnlyFront.
  backgroundColor	int	The background color in RGB Hex format.
  rotationMode	AliRtcRotationMode	The video rotation angle. The default is no rotation.
  textureId	int	The texture ID.
  textureWidth	int	The texture width.
  textureHeight	int	High-quality texture

• AliRtcTrascodingLiveStreamErrorCode: Error codes for bypass stream ingest.

  Enumeration	Description
  AliRtcTrascodingLiveStreamErrorPublishOk	Stream ingest successful.
  AliRtcTrascodingLiveStreamErrorStreamNotFound	Error: Stream not found.
  AliRtcTrascodingLiveStreamErrorStreamAlreadyExist	Error: The destination stream already exists.
  AliRtcTrascodingLiveStreamErrorInvalidParam	Error: Invalid parameter.
  AliRtcTrascodingLiveStreamErrorInternalError	Error: Internal error.
  AliRtcTrascodingLiveStreamErrorRtmpServerError	Error: RTMP service is abnormal.
  AliRtcTrascodingLiveStreamErrorRtmpStreamUrlError	Error: URL is abnormal.
  AliRtcTrascodingLiveStreamErrorPublishTimeout	Error: Task timed out.
  AliRtcTrascodingLiveStreamErrorNotAuthorized	Error: Operation not authorized.

• AliRtcWatermarkConfig: The watermark image settings.

  Parameter	Type	Description
  visibleInPreview	BOOL	Indicates whether the watermark is visible in the local preview.
  positionInLandscapeMode	CGRect	The watermark coordinates in landscape mode.
  positionInPortraitMode	CGRect	The watermark coordinates in portrait mode.
  alpha	float	The transparency.
  normalized	BOOL	Indicates whether to normalize.

• AliRtcCameraCapturerConfiguration: The preferred properties for camera capture.

  Parameter	Type	Description
  preference	AliRtcCaptureOutputPreference	The capture preference.
  cameraDirection	AliRtcCameraDirection	The camera direction.

• AliRtcCameraDirection: The camera direction.

  Enumeration	Description
  AliRtcCameraDirectionInvalid	Unknown.
  AliRtcCameraDirectionBack	Rear camera.
  AliRtcCameraDirectionFront	Front camera.

• AliRtcCaptureOutputPreference: The camera capture preference.

  Enumeration Name	Description
  AliRtcCaptureOutputPreferenceAuto	Automatically adjust capture parameters.
  AliRtcCaptureOutputPreferencePerformance	Prioritize device performance. Selects the camera output parameters that are closest to the setVideoProfile settings.
  AliRtcCaptureOutputPreferencePreview	Prioritize video preview quality. Selects higher camera output parameters.

• AliRtcVideoEncoderFrameRate: The video encoding frame rate.

  Enumeration	Description
  AliRtcVideoEncoderFrameRate_FPS_5	5 FPS.
  AliRtcVideoEncoderFrameRate_FPS_10	10 FPS.
  AliRtcVideoEncoderFrameRate_FPS_15	15 FPS.
  AliRtcVideoEncoderFrameRate_FPS_20	20 FPS.
  AliRtcVideoEncoderFrameRate_FPS_30	30 FPS.

• AliRtcVideoEncoderBitrate: The video encoding bitrate.

  Enumeration	Description
  AliRtcVideoEncoderStandardBitrate	Standard bitrate mode.

• AliRtcVideoEncoderMirrorMode: The mirror mode for encoded video.

  Enumeration	Description
  AliRtcVideoEncoderMirrorModeDisabled	Image for video encoding
  AliRtcVideoEncoderMirrorModeEnabled	Do not mirror the encoded video.

• AliRtcVideoEncoderOrientationMode: The rotation mode for encoded video.

  Enumeration	Description
  AliRtcVideoEncoderOrientationModeAdaptive	Adaptive. Same as the captured video.
  AliRtcVideoEncoderOrientationModeFixedLandscape	Fixed landscape.
  AliRtcVideoEncoderOrientationModeFixedPortrait	Fixed portrait.

• AliRtcVideoEncoderConfiguration: The video encoding preferences.

  Parameter	Type	Description
  dimensions	CGSize	The video resolution.
  frameRate	NSInteger	The video encoding frame rate.
  bitrate	NSInteger	The video encoding bitrate.
  mirrorMode	AliRtcVideoEncoderMirrorMode	The encoded video mirror mode.
  orientationMode	AliRtcVideoEncoderOrientationMode	The encoded video rotation mode.
  rotationMode	AliRtcRotationMode	The video rotation angle.

• AliRtcScreenShareEncoderConfiguration: The screen sharing encoding preferences.

  Parameter	Type	Description
  dimensions	CGSize	The video resolution.
  frameRate	NSInteger	The video encoding frame rate.
  bitrate	NSInteger	The video encoding bitrate.
  rotationMode	AliRtcRotationMode	The screen rotation angle.

• AliRtcAuthInfo: The authentication information.

  Parameter	Type	Description
  channelId	NSString * _Nonnull	The channel ID.
  userId	NSString * _Nonnull	The user ID.
  appId	NSString * _Nonnull	The application ID.
  nonce	NSString * _Nonnull	A random string.
  token	NSString * _Nonnull	The token.
  session	NSString * _Nullable	The session.
  role	NSString * _Nullable	The role type. The default value is empty, which means this feature is not used. Valid values: pub: Streamer role. sub: Viewer role. relay: Cross-channel stream forwarding. To perform role-based authentication, see How to perform role-based authentication.
  gslb	NSArray <NSString *> *	The GSLB address.
  agent	NSArray <NSString *> *	Set the address of the Agent server.
  timestamp	long long	The timestamp.

• AliRtcDeviceVolumeType: The device volume type. (iOS only)

  Enumeration	Description
  AliRtcDeviceVolumeTypeAuto	The SDK automatically sets the volume type (default). The SDK automatically selects the appropriate volume type. We do not recommend setting this yourself unless you have special requirements.
  AliRtcDeviceVolumeTypeMedia	Set as media volume. Suitable for media playback scenarios. The volume can be adjusted to zero.
  AliRtcDeviceVolumeTypeVOIP	Set as call volume. Suitable for call scenarios. The volume cannot be adjusted to zero.

• AliRtcVideoSource: The raw video data source type.

  Enumeration	Description
  AliRtcVideosourceCameraType	Video stream.
  AliRtcVideosourceScreenShareType	Screen sharing stream.
  AliRtcVideosourceTypeMax	Placeholder.

• AliRtcAudioSource: The raw audio data source type.

  Enumeration name	Description
  AliRtcAudiosourcePub	Published audio data.
  AliRtcAudiosourceSub	Pulls audio stream data.
  AliRtcAudiosourceRawData	Captured raw audio data.

• AliRtcBufferType: The video data type.

  Enumeration	Description
  AliRtcBufferType_Raw_Data	Raw YUV data.
  AliRtcBufferType_CVPixelBuffer	CVPixelBuffer data.

• AliRtcErrorCode: The error code.

  Enumeration	Description
  AliRtcErrNone	None.
  AliRtcErrJoinBadAppId	The App ID does not exist.
  AliRtcErrJoinInvalidAppId	The App ID is invalid.
  AliRtcErrJoinBadChannel	The channel does not exist.
  AliRtcErrJoinInvalidChannel	The channel is invalid.
  AliRtcErrJoinBadToken	The token does not exist.
  AliRtcErrJoinTimeout	Timed out when joining the channel.
  AliRtcErrJoinBadParam	Incorrect parameter.
  AliRtcErrMicOpenFail	Capture device initialization failed.
  AliRtcErrSpeakerOpenFail	Playback device initialization failed.
  AliRtcErrMicInterrupt	An exception occurred during capture.
  AliRtcErrSpeakerInterrupt	An exception occurred during playback.
  AliRtcErrMicAuthFail	Microphone device is not authorized.
  AliRtcErrMicNotAvailable	No available audio capture device.
  AliRtcErrSpeakerNotAvailable	No available audio playback device.
  AliRtcErrCameraOpenFail	Capture device initialization failed.
  AliRtcErrCameraInterrupt	An exception occurred during capture.
  AliRtcErrDisplayOpenFail	Rendering device initialization failed.
  AliRtcErrDisplayInterrupt	An exception occurred during rendering.
  AliRtcErrIceConnectionConnectFail	Failed to establish a media channel.
  AliRtcErrIceConnectionReconnectFail	Failed to reconnect to the media channel.
  AliRtcErrIceConnectionHeartbeatTimeout	Signaling heartbeat timed out.
  AliRtcErrPublishInvaild	Invalid stream ingest.
  AliRtcErrPublishNotJoinChannel	Failed to ingest stream because the user is not in the channel.
  AliRtcErrPublishAudioStreamFailed	Failed to push the audio stream.
  AliRtcErrPublishVideoStreamFailed	Failed to push the video stream.
  AliRtcErrPublishDualStreamFailed	Failed to push the dual stream.
  AliRtcErrPublishScreenShareFailed	Failed to push the screen sharing stream.
  AliRtcErrPublishScreenShareConfigError	Incorrect screen sharing configuration.
  AliRtcErrSubscribeInvaild	Invalid subscription.
  AliRtcErrSubscribeNotJoinChannel	Subscription error because the user is not in the channel.
  AliRtcErrSubscribeAudioStreamFailed	Failed to subscribe to the audio stream.
  AliRtcErrSubscribeVideoStreamFailed	Failed to subscribe to the video stream.
  AliRtcErrSubscribeDualStreamFailed	Failed to subscribe to the dual stream.
  AliRtcErrSubscribeScreenShareFailed	Failed to subscribe to the screen sharing stream.
  AliRtcErrCdnLiveCommunicationFailed	Low-latency interactive streaming signaling failed.
  AliRtcErrCdnLiveMeidaSettingFailed	Incorrect media settings for low-latency interactive streaming.
  AliRtcErrCdnLiveNoneBroadcaster	No streamer is ingesting a stream in the current low-latency interactive streaming channel.
  AliRtcErrCdnLiveNeedRestart	Low-latency interactive streaming error. The application layer needs to create a new SDK instance.
  AliRtcErrCdnLiveNeedRestartAgainLater	Low-latency interactive streaming error. The application layer needs to wait for a custom interval and then create a new SDK instance.
  AliRtcErrCdnLiveServiceUnavailable	The low-latency interactive streaming service is unavailable or has been degraded.
  AliRtcErrCdnLiveMediaConnectionInterruption	Network interruption error in low-latency interactive streaming.
  AliRtcErrSdkInvalidState	Incorrect SDK state.
  AliRtcErrSessionRemoved	The session has been removed.
  AliRtcErrInvalidArguments	Parameter mismatch.
  AliRtcErrAudioBufferFull	The buffer queue is full. This is used for external raw data input.
  AliRtcErrVideoBufferFull	The buffer queue is full. This is used for external raw data input.
  AliRtcErrUpdateRoleChannel	Error setting the role in interactive mode.
  AliRtcErrInner	Other errors.

• AliRtcExternalDeviceType: The external device types. (Mac only)

  Enumeration	Description
  AliRtcExternalTypeUnknown	Unknown type.
  AliRtcExternalTypeAudioCapture	Audio capture device.
  AliRtcExternalTypeAudioPlayout	Audio playback device.
  AliRtcExternalTypeVideoCapture	Video capture device.

• AliRtcExternalDeviceState: The external device states. (Mac only)

  Enumeration	Description
  AliRtcExternalDeviceAdd	An external device is added.
  AliRtcExternalDeviceRemove	An external device is removed.

• AliRtcRecordVideoCanvasConfig: The canvas size for video recording settings. (Mac only)

  Parameter	Type	Description
  canvasWidth	int	The canvas width.
  canvasHeight	int	The canvas height.

• AliRtcRecordVideoLayout: The layout information for recorded video. (Mac only)

  Parameter	Type	Description
  mode	AliRtcRecordVideoLayoutMode	The layout mode.
  backColor	AliRtcRecordVideoBgColor	The background color.
  shapes	NSMutableArray<AliRtcRecordVideoRegion *> * _Nullable	The position information for each user's video.

• AliRtcRecordVideoLayoutMode: The layout mode for recorded video. (Mac only)

  Enumeration Name	Description
  AliRtcRecordVideoLayoutMode_GRID	Grid layout.
  AliRtcRecordVideoLayoutMode_SPEAKER	Speaker layout.
  AliRtcRecordVideoLayoutMode_UNIQUE	Single-stream layout.
  AliRtcRecordVideoLayoutMode_CUSTOM	Custom layout.

• AliRtcRecordVideoBgColor: The background color for recorded video. (Mac only)

  Parameter	Type	Description
  r	uint8_t	The value of red in the color mix.
  g	uint8_t	The value of green in the color mix.
  b	uint8_t	The value of blue in the color mix.

• AliRtcRecordVideoRegion: The user video configuration for the recording layout. (Mac only)

  Parameter	Type	Description
  userId	NSString * _Nonnull	The user ID.
  sourceType	AliRtcVideoSource	Raw video data source type.
  area	AliRtcRecordVideoRectangle	The position on the user's screen.

• AliRtcRecordVideoRectangle: The user video position information. (Mac only)

  Parameter	Type	Description
  left	AliRtcRecordVideoRational	Left margin.
  top	AliRtcRecordVideoRational	Top margin.
  width	AliRtcRecordVideoRational	Width.
  height	AliRtcRecordVideoRational	Height.

• AliRtcRecordVideoRational: The coordinates for stream mixing recording. (Mac only)

  Parameter	Type	Description
  numerator	uint32_t	Numerator (integer).
  denominator	uint32_t	Denominator (integer).

• AliRtcRecordTemplate: The recording template. (Mac only)

  Parameter	Type	Description
  recordType	AliRtcRecordType	Record type.
  recordFormat	AliRtcRecordFormat	Record format.
  sampleRate	AliRtcAudioSampleRate	Audio recording sample rate.
  audioQuality	AliRtcAudioQuality	Audio recording quality.
  enableRecordExternalCapturePCM	bool	Indicates whether to mix and record external audio input.
  enableRecordExternalRenderPCM	bool	Indicates whether to mix and record external audio after rendering.
  canvas	AliRtcRecordVideoCanvasConfig	Canvas size for recorded video.
  fps	int	Frame rate.
  bitrate	int	Bitrate.
  isFragment	bool	Indicates whether to record segmented MP4 files. The default is true.

• AliRtcDeviceInfo: The device information. (Mac only)

  Parameter	Type	Description
  deviceName	NSString * _Nullable	Device name.
  deviceID	NSString * _Nullable	Device ID.

• AliRtcScreenShareConfig: The screen sharing configuration. (Mac only)

  Parameter	Type	Description
  isShareByRegion	bool	Indicates whether it is a regional share.
  shareRegion	AliRtcScreenShareRegion * _Nonnull	Layout information for regional sharing.

• AliRtcScreenShareRegion: The screen sharing region. (Mac only)

  Parameter	Type	Description
  originX	float	The x-coordinate.
  originY	float	The y-coordinate.
  width	float	The width.
  height	float	The height.

• AliRtcScreenSourceInfo: The screen sharing source information. (Mac only)

  Parameter	Type	Description
  sourceId	NSString * _Nonnull	The sharing source ID.
  sourceName	NSString * _Nonnull	The sharing source name.

• AliRtcScreenShareInfo: The screen sharing configuration information. (Mac only)

  Parameter	Type	Description
  sourceType	AliRtcScreenShareType	The sharing type.
  sourceId	NSString * _Nonnull	The sharing source ID.
  config	AliRtcScreenShareConfig * _Nonnull	The screen sharing configuration.

• AliRtcScreenShareType: The screen sharing type. (Mac only)

  Enumeration	Description
  AliRtcScreenShareDesktop	Desktop sharing.
  AliRtcScreenShareWindow	Window sharing.

• AliRtcVideoObserAlignment: The width alignment for video output.

  Enumeration	Description
  AliRtcAlignmentDefault	Keep the original video width (default).
  AliRtcAlignmentEven	Width is even-aligned.
  AliRtcAlignment4	Width is a multiple of 4.
  AliRtcAlignment8	Width is a multiple of 8.
  AliRtcAlignment16	Width is a multiple of 16.

• AliRtcShowDebugViewType: The dashboard display type.

  Enumeration	Description
  AliRtcShowTypeNone	Do not display.
  AliRtcShowTypeAudio	Audio.
  AliRtcShowTypeVideo	Video.
  AliRtcShowTypeNetwork	Network.
  AliRtcShowTypeAll	All.

• AliRtcTrascodingLiveTaskStatus: The LiveStream status for bypass stream ingest.

  Enumeration	Description
  AliRtcTrascodingLiveTaskStatusStart	Task started.
  AliRtcTrascodingLiveTaskStatusUpdate	Task updated.
  AliRtcTrascodingLiveTaskStatusStop	Task stopped.

• AliRtcLiveTranscodingDisplayType: The image display type for bypass live streaming.

  Enumeration	Description
  NOT_DISPLAY	Do not display.
  ALWAYS	Always display.
  WHEN_NO_VIDEO	Display when there is no video.

• AliRtcLiveTranscodingFontType: The text type for bypass live streaming.

  Enumeration	Description
  NOTO_SERIF_CJKSC_REGULAR	Noto Serif CJK SC Regular.
  ALIBABA_PUHUITI_REGULAR	Alibaba PuHuiTi Regular.
  ALIBABA_PUHUITI_BOLD	Alibaba PuHuiTi Bold.
  ALIBABA_PUHUITI_Heavy	Alibaba PuHuiTi Heavy.
  ALIBABA_PUHUITI_LIGHT	Alibaba PuHuiTi Light.
  ALIBABA_PUHUITI_MEDIUM	Alibaba PuHuiTi Medium.

• AliRtcLiveTranscodingSegmentType: The input type for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingNoBody	No portrait segmentation.
  AliRtcLiveTranscodingBody	Portrait segmentation.

• AliRtcLiveTranscodingSourceType: The input type for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingCamera	Camera.
  AliRtcLiveTranscodingShareScreen	Screen sharing.

• AliRtcVideoState: A change in the video stream state.

  Enumeration	Description
  AliRtcVideoVideoClose	Close the video stream.
  AliRtcVideoVideoOpen	Resume the video stream.

• AliRtcVideoReason: The reason for a change in the video stream state.

  Enumeration	Description
  AliRTCVideoChangedByClient	Client.
  AliRTCVideoChangedByServer	Server.

• AliRtcLiveTranscodingCropMode: The clipping mode for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingCrop	Crop while maintaining the aspect ratio.
  AliRtcLiveTranscodingFill	Fill with black bars while maintaining the aspect ratio (default).

• AliRtcLiveTranscodingMediaProcessMode: The media processing mode for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingNormal	Normal mode.
  AliRtcLiveTranscodingVirtualBackground	Virtual background mode.

• AliRtcLiveTranscodingStreamType: The stream type for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingOrigin	Forward the original stream.
  AliRtcLiveTranscodingAudio	Forward only the audio stream.
  AliRtcLiveTranscodingVideo	Forward only the video stream.

• AliRtcLiveTranscodingMixMode: The mode for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingSINGLE	Single-stream forwarding. No stream mixing or transcoding. Only the original single stream is forwarded. No need to configure stream mixing and transcoding parameters.
  AliRtcLiveTranscodingMIX	Stream mixing and transcoding (default). Supports stream mixing and transcoding output.

• AliRtcLiveTranscodingState: The state of bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscodingState_IDLE	Stream ingest is idle.
  AliRtcLiveTranscodingState_CONNNECT	Connecting to the stream ingest server.
  AliRtcLiveTranscodingState_RUNNING	Stream ingest is in progress.
  AliRtcLiveTranscodingState_RECOVERING	Recovering stream ingest.
  AliRtcLiveTranscodingState_FAILURE	Stream ingest failed.
  AliRtcLiveTranscodingState_END	Stream ingest ended.

• AliRtcLiveTranscodingText: The text information for bypass live streaming.

  Parameter	Type	Description
  text	NSString	Text information.
  x	int	The x-coordinate (pixel).
  y	int	The y-coordinate (pixel).
  fontType	AliRtcLiveTranscodingFontType	Font for bypass live streaming.
  fontSize	int	Font size.
  zOrder	int	The layer order. Layer 0 is the bottom layer. Layer 1 is stacked on top of layer 0, and so on.
  fontColor	int	Font color.

• AliRtcLiveTranscodingImage: The image information for bypass live streaming.

  Parameter	Type	Description
  url	NSString	Image URL.
  alpha	float	Transparency. 0.0 means transparent, 1.0 means fully opaque.
  display	AliRtcLiveTranscodingDisplayType	Image display.
  x	int	The x-coordinate (pixel).
  y	int	The y-coordinate (pixel).
  width	int	Image width.
  height	int	Image height.
  zOrder	int	The layer order. Layer 0 is the bottom layer. Layer 1 is stacked on top of layer 0, and so on.

• AliRtcLiveTranscodingPane: The custom user pane information for bypass live streaming.

  Parameter	Type	Description
  x	int	The x-coordinate (pixel).
  y	int	The y-coordinate (pixel).
  width	int	Pane width.
  height	int	Pane height.
  zOrder	int	The layer order. Layer 0 is the bottom layer. Layer 1 is stacked on top of layer 0, and so on.
  userId	NSString *	User ID.
  sourceType	AliRtcLiveTranscodingSourceType	Stream type.
  segmentType	AliRtcLiveTranscodingSegmentType	Input type for bypass live streaming.
  images	NSArray<AliRtcLiveTranscodingImage *> *	Image information for bypass live streaming.
  texts	NSArray<AliRtcLiveTranscodingText *> *	Text information for bypass live streaming.

• AliRtcLiveTranscodingParam: The configuration for bypass live streaming.

  Parameter	Type	Description
  mixMode	AliRtcLiveTranscodingMixMode	Mode for bypass live streaming.
  singleParam	AliRtcLiveTranscodingSingleParam *	Single-stream parameters for bypass live streaming.
  mixParam	AliRtcLiveTranscodingMixParam	Stream mixing parameters for bypass live streaming.

• AliRtcLiveTranscodingMixParam: The stream mixing parameters for bypass mode.

  Parameter	Type	Description
  taskProfile	AliRtcLiveTranscodingTaskProfile	Billing specifications for bypass live streaming.
  encodeParam	AliRtcLiveTranscodingEncodeParam *	Encoding parameters for bypass live streaming.
  users	NSArray<AliRtcLiveTranscodingPane *> *	List of users for bypass live streaming.
  backgroundColor	int	Background color.
  backgrounds	NSArray<AliRtcLiveTranscodingImage *> *	List of background images.
  watermarks	NSArray<AliRtcLiveTranscodingImage *> *	List of watermark images.
  clockWidgets	NSArray<AliRtcLiveTranscodingClockWidget *> *	List of clock widgets.
  cropMode	AliRtcLiveTranscodingCropMode	Clipping mode for bypass live streaming.
  mediaProcessMode	AliRtcLiveTranscodingMediaProcessMode	Media processing mode for bypass live streaming.

• AliRtcLiveTranscodingSingleParam: The single-stream parameters for bypass mode.

  Parameter	Type	Description
  userId	NSString *	User ID.
  streamType	AliRtcLiveTranscodingStreamType	Stream type for bypass live streaming.
  sourceType	AliRtcLiveTranscodingSourceType	Video stream type for bypass live streaming.

• AliRtcLiveTranscodingTaskProfile: The billing specifications for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscoding_Profile_1IN_1080P	1IN_1080P.
  AliRtcLiveTranscoding_Profile_1IN_720P	1IN_720P.
  AliRtcLiveTranscoding_Profile_1IN_360P	1IN_360P.
  AliRtcLiveTranscoding_Profile_2IN_1080P	2IN_1080P.
  AliRtcLiveTranscoding_Profile_2IN_720P	2IN_720P.
  AliRtcLiveTranscoding_Profile_2IN_360P	2IN_360P.
  AliRtcLiveTranscoding_Profile_4IN_1080P	4IN_1080P.
  AliRtcLiveTranscoding_Profile_4IN_720P	4IN_720P.
  AliRtcLiveTranscoding_Profile_4IN_360P	4IN_360P.
  AliRtcLiveTranscoding_Profile_9IN_1080P	9IN_1080P.
  AliRtcLiveTranscoding_Profile_9IN_720P	9IN_720P.
  AliRtcLiveTranscoding_Profile_9IN_360P	9IN_360P.
  AliRtcLiveTranscoding_Profile_12IN_1080P	12IN_1080P.
  AliRtcLiveTranscoding_Profile_12IN_720P	12IN_720P.
  AliRtcLiveTranscoding_Profile_12IN_360P	12IN_360P.
  AliRtcLiveTranscoding_Profile_16IN_1080P	16IN_1080P.
  AliRtcLiveTranscoding_Profile_16IN_720P	16IN_720P.
  AliRtcLiveTranscoding_Profile_16IN_360P	16IN_360P.
  AliRtcLiveTranscoding_Profile_Mixed	Audio-only.

• AliRtcLiveTranscodingEncodeParam: The encoding parameters for bypass live streaming.

  Parameter	Type	Description
  videoWidth	int	Width.
  videoHeight	int	Height.
  videoFramerate	int	Frame rate.
  videoBitrate	int	Bitrate.
  videoGop	int	GOP.
  audioSamplerate	AliRtcLiveTranscodingAudioSampleRate	Audio sample rate for bypass live streaming.
  audioBitrate	int	Audio bitrate.
  audioChannels	int	Number of audio channels.

• AliRtcLiveTranscodingAudioSampleRate: The audio sample rate for bypass live streaming.

  Enumeration	Description
  AliRtcLiveTranscoding_HZ_48000	Sample rate of 48000 Hz.
  AliRtcLiveTranscoding_HZ_44100	Sample rate of 44100 Hz.
  AliRtcLiveTranscoding_HZ_32000	Sample rate of 32000 Hz.
  AliRtcLiveTranscoding_HZ_16000	Sample rate of 16000 Hz.
  AliRtcLiveTranscoding_HZ_8000	Sample rate of 8000 Hz.

• AliRtcLiveTranscodingClockWidget: The clock widget for bypass live streaming.

  Parameter	Type	Description
  x	int	The x-coordinate (pixel).
  y	int	The y-coordinate (pixel).
  fontSize	int	Font size for bypass live streaming.
  zOrder	int	The layer order. Layer 0 is the bottom layer. Layer 1 is stacked on top of layer 0, and so on.
  fontColor	int	Font color for bypass live streaming.
  fontType	AliRtcLiveTranscodingFontType	Font for bypass live streaming.

• AliRtcBokehScaleModel: The scaling mode for background replacement. (Mac only)

  Enumeration	Description
  AliRtcBokehScaleModelCrop	Proportional clipping.
  AliRtcBokehScaleModelFill	Fill with black bars.

• AliRtcAudioPlayingStateCode: The playback state for music accompaniment. (Mac only)

  Enumeration	Description
  AliRtcAudioPlayingStarted	Playback started.
  AliRtcAudioPlayingStopped	Playback stopped.
  AliRtcAudioPlayingPaused	Playback paused.
  AliRtcAudioPlayingResumed	Playback resumed.
  AliRtcAudioPlayingEnded	Playback finished.
  AliRtcAudioPlayingBuffering	Buffering.
  AliRtcAudioPlayingBufferingEnd	Buffering finished.
  AliRtcAudioPlayingFailed	Playback failed.

• AliRtcAudioPlayingErrorCode: The error codes for music accompaniment playback. (Mac only)

  Enumeration	Description
  AliRtcAudioPlayingNoError	No error.
  AliRtcAudioPlayingOpenFailed	Error opening file.
  AliRtcAudioPlayingDecodeFailed	Error decoding file.