AOQ Client SDK Android API reference

API index

Engine lifecycle

API	Description
createEngine	Create an engine instance (singleton)
destroy	Destroy the engine instance
getVersion	Get the SDK version
connect	Connect to the Relay server
disconnect	Disconnect from the server

Audio device management

API	Description
startAudioCapture	Open the audio capture device (microphone)
stopAudioCapture	Close the audio capture device
muteAudioCapture	Mute or unmute audio capture
startAudioPlayer	Start audio rendering (remote audio playback)
stopAudioPlayer	Stop audio rendering
pauseAudioPlayer	Pause audio rendering, with optional fade-out
resumeAudioPlayer	Resume audio rendering, with optional fade-in
interruptAudioPlayer	Interrupt the current audio session
enableSpeakerphone	Switch audio output between the speaker and earpiece
isSpeakerphoneEnabled	Check whether audio output uses the speaker

Audio encoding configuration

API	Description
setAudioEncoderConfig	Set audio encoding parameters
setAudioDecoderConfig	Set audio decoding parameters

Audio file playback

API	Description
startAudioFile	Start playing and publishing a local audio file
stopAudioFile	Stop audio file playback
pauseAudioFile	Pause audio file playback
resumeAudioFile	Resume audio file playback
getAudioFileDuration	Get the total duration of the audio file
getAudioFileCurrentPosition	Get the current playback position of the audio file
setAudioFilePositionMillis	Seek to a position in the audio file
setAudioFileVolume	Set the audio file volume
getAudioFileVolume	Get the current audio file volume

External audio streams

API	Description
addAudioExternalStream	Add an external audio stream
pushAudioExternalStreamData	Push external PCM audio data
setAudioExternalStreamVolume	Set the external audio stream volume
getAudioExternalStreamVolume	Get the external audio stream volume
clearAudioExternalStreamBuffer	Clear the external audio stream buffer
removeAudioExternalStream	Remove an external audio stream

Audio frame callbacks

API	Description
setAudioFrameObserver	Set the audio frame callback listener
enableAudioFrameObserver	Enable or disable audio frame callbacks at a specified stage

Local audio volume indication

API	Description
enableLocalAudioVolumeIndication	Enable or disable local capture volume indication

Video device management

API	Description
startVideoCapture	Open the video capture device (camera)
stopVideoCapture	Close the video capture device
switchCamera	Switch between front and rear cameras
setLocalView	Set or remove the local video rendering window
setRemoteView	Set or remove the remote video rendering window

Video encoding and external input

API	Description
setVideoEncoderConfig	Set video encoding parameters
setVideoDecoderConfig	Set video decoding parameters
pushExternalVideoCapturedFrame	Push externally captured video frames
pushExternalVideoEncodedFrame	Push externally encoded video frames

Screen capture

API	Description
startScreenCapture	Start screen capture
stopScreenCapture	Stop screen capture

Media stream transmission control

API	Description
enableSendMediaStream	Enable or disable local media stream transmission

Video frame callbacks

API	Description
setVideoFrameObserver	Set the video frame callback listener
enableVideoFrameObserver	Enable or disable video frame callbacks at a specified stage

Real-time messages

API	Description
sendDataMsg	Send a real-time data message

AoqClientListener callbacks

API	Description
onError	Engine error callback
onWarning	Engine warning callback
onConnectionStatusChange	Connection status change callback
onStats	Engine statistics callback
onAudioDeviceStateChanged	Audio device operation status change callback
onAudioDeviceRouteChanged	Audio output route change callback
onAudioDeviceInterrupted	Audio device interruption callback
onScreenCaptureStateChanged	Screen capture status change callback
onVideoDeviceStateChanged	Video device operation status change callback
onAudioDeviceFocusChanged	Audio focus change callback
onAudioFileState	Audio file playback status callback
onLocalAudioVolumeIndication	Local capture volume indication callback
onDataMsg	Received real-time data message callback

AoqAudioFrameListener callbacks

API	Description
onCapturedAudioFrame	Called when a raw audio frame is captured. The frame contains unprocessed PCM data.
onProcessCapturedAudioFrame	Called for an audio frame after 3A processing, such as echo cancellation and noise suppression.
onPublishAudioFrame	Called for an audio frame before publishing, immediately before encoding and transmission.
onPlaybackAudioFrame	Called for a remote audio frame before playback, after decoding and mixing.

AoqVideoFrameListener callbacks

API	Description
onCapturedVideoFrame	Called when a raw video frame is captured, before preprocessing.
onPreEncodeVideoFrame	Called for a video frame after preprocessing and before encoding.
onRemoteVideoFrame	Called for a remote video frame after decoding and before rendering.

API details

pushExternalVideoCapturedFrame supports Video and Screen. Enable external capture on the corresponding track first; otherwise, it returns AoqECVideoExternalCaptureNotEnabled (211).

Engine lifecycle

createEngine Create the engine instance. The SDK holds the engine as a global singleton; calling this method again returns the existing instance.

@NonNull
public static AoqClientEngine createEngine(
    @NonNull Context context,
    @NonNull AoqCreateConfig config,
    @NonNull AoqClientListener listener)

Parameter	Type	Description
context	Context	Android application context
config	AoqCreateConfig	Engine creation configuration
listener	AoqClientListener	Engine event callback listener

Returns: AoqClientEngine instance; never null. destroy Destroys the engine instance and releases all resources. Call createEngine again before using the SDK after destruction.

public static int destroy()

Parameters: None. Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode. getVersion Gets the current SDK version. Can be called before createEngine.

@NonNull
public static String getVersion()

Parameters: None. Return value: A version string, such as "1.3.0". connect Connects to the Relay server. The application's AppServer allocates connection parameters through /api/v1/allocate and sends them to the client. This method returns immediately. The connection result is reported through onConnectionStatusChange.

public abstract int connect(@NonNull AoqConnectConfig config)

Parameter	Type	Description
config	AoqConnectConfig	Connection configuration, including Token, SID, Relay endpoints, and publishing/subscription tracks

Return value: 0 indicates that the call has been dispatched for asynchronous execution. A nonzero value indicates parameter validation failure and corresponds to AoqErrorCode.

The Screen track supports upstream transmission only; downstream subscription is not implemented. Do not include AoqTrackTypeScreen in config.subscribeTracks. Otherwise, AoqECUnSupport is returned and no connection is initiated. Do not enable media sending with enableSendMediaStream(true) before the connection succeeds. Enable it after onConnectionStatusChange reports Connected.

disconnect Disconnects from the server and releases connection resources. Returns immediately. The disconnection result is reported through onConnectionStatusChange.

public abstract int disconnect()

Parameters: None. Return value: 0 indicates that the call has been dispatched for asynchronous execution. A nonzero value indicates failure and corresponds to AoqErrorCode.

Audio device management

startAudioCapture

Opens the audio capture device (microphone) and starts capturing local audio. For external audio input (pushAudioExternalStreamData), set isExternal to true. In this mode, the microphone is not opened.

public abstract int startAudioCapture(@NonNull AoqAudioCaptureConfig config)

Parameter	Type	Description
config	AoqAudioCaptureConfig	Audio capture configuration

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode. For example, AoqECAudioDeviceRecordingAuthFailed indicates that recording permission has not been granted.

On Android, request the RECORD_AUDIO permission before calling this method. Device state changes are reported through onAudioDeviceStateChanged.

stopAudioCapture

Closes the audio capture device and stops local audio capture.

public abstract int stopAudioCapture()

Parameters: None. Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

muteAudioCapture

Mutes or unmutes audio capture. Unlike stopAudioCapture, muting keeps capture running but sends silent frames.

public abstract int muteAudioCapture(boolean mute)

Parameter	Type	Description
mute	boolean	true mutes capture; false unmutes it.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

This method takes effect only after startAudioCapture is called.

startAudioPlayer

Starts audio rendering and plays remote audio through the speaker or earpiece. For external rendering (playing PCM yourself), set isExternal to true.

public abstract int startAudioPlayer(@NonNull AoqAudioPlaybackConfig config)

Parameter	Type	Description
config	AoqAudioPlaybackConfig	Audio playback configuration

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode. For example, AoqECAudioDevicePlayoutOccupied indicates that the playback device is occupied.

Device state changes are reported through onAudioDeviceStateChanged. Output route changes are reported through onAudioDeviceRouteChanged.

stopAudioPlayer

Stops audio rendering and closes the playback device.

public abstract int stopAudioPlayer()

Parameters: None. Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

pauseAudioPlayer

Pauses audio rendering with optional fade-out. Remote audio data continues to arrive while paused but is not played.

public abstract int pauseAudioPlayer(int fadeMs)

Parameter	Type	Description
fadeMs	int	Fade-out duration in milliseconds. 0 pauses playback immediately.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

resumeAudioPlayer

Resumes audio rendering with optional fade-in. Call this method after pauseAudioPlayer.

public abstract int resumeAudioPlayer(int fadeMs)

Parameter	Type	Description
fadeMs	int	Fade-in duration in milliseconds. 0 resumes playback immediately.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

interruptAudioPlayer

Interrupts the current audio conversation and clears the playback buffer. This is commonly used when a user interrupts AI speech in a conversation.

public abstract int interruptAudioPlayer(@NonNull AoqTrackType trackType, int fadeMs)

Parameter	Type	Description
trackType	AoqTrackType	Type of the track to interrupt
fadeMs	int	Fade-out duration in milliseconds. 0 interrupts playback immediately.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

enableSpeakerphone

Switches audio output to the speaker or earpiece. Takes effect only after startAudioPlayer.

public abstract int enableSpeakerphone(boolean enable)

Parameter	Type	Description
enable	boolean	true switches to the speaker; false switches to the earpiece.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode. For example, AoqECAudioDeviceEarpieceRequiresVoipMode indicates that the earpiece requires VoIP mode.

Switching to the earpiece requires AoqAudioPlaybackConfig.isVoipMode=true. Route changes are reported through onAudioDeviceRouteChanged.

isSpeakerphoneEnabled

Checks whether audio is currently output through the speaker.

public abstract boolean isSpeakerphoneEnabled()

Parameters: None. Return value: true indicates speaker output. false indicates the earpiece or another route.

Audio encoding configuration

setAudioEncoderConfig

Configures audio encoding for publishing. Configuration changes take effect immediately.

public abstract int setAudioEncoderConfig(@NonNull AoqAudioCodecConfig config)

Parameter	Type	Description
config	AoqAudioCodecConfig	Audio encoding configuration. Set trackType to AoqTrackTypeAudio.

Return value: 0 on success; non-zero on failure (an AoqErrorCode value, such as AoqECParamInvalid for invalid parameters).

codecType specifies the encoding format (Opus by default). sampleRate and channel must match the capture settings. bitrate applies only to lossy codecs such as Opus.

setAudioDecoderConfig

Configures audio decoding for subscribed audio. The settings must match the remote encoding settings.

public abstract int setAudioDecoderConfig(@NonNull AoqAudioCodecConfig config)

Parameter	Type	Description
config	AoqAudioCodecConfig	Audio decoding configuration. Set trackType to AoqTrackTypeAudio.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

sampleRate must match the output sample rate of the remote encoder. A mismatch may cause decoding errors or audio quality issues.

Audio file playback

startAudioFile

Starts streaming and playing a local audio file. Remote streaming and local playback can run simultaneously, with their volumes controlled by publishVolume and playoutVolume, respectively.

public abstract int startAudioFile(@NonNull String fileId, @NonNull AoqAudioFileMixConfig config)

Parameter	Type	Description
fileId	String	Application-defined file identifier used for subsequent control
config	AoqAudioFileMixConfig	Audio file playback configuration

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Playback state changes are reported through onAudioFileState. Repeated calls with the same fileId replace the previous playback.

stopAudioFile

Stops audio file playback.

public abstract int stopAudioFile(@NonNull String fileId)

Parameter	Type	Description
fileId	String	File identifier, matching the value passed to startAudioFile

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

pauseAudioFile

Pauses audio file playback.

public abstract int pauseAudioFile(@NonNull String fileId)

Parameter	Type	Description
fileId	String	File identifier

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

resumeAudioFile

Resumes audio file playback. Call this method after pauseAudioFile.

public abstract int resumeAudioFile(@NonNull String fileId)

Parameter	Type	Description
fileId	String	File identifier

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

getAudioFileDuration

Gets the total duration of an audio file.

public abstract long getAudioFileDuration(@NonNull String fileId)

Parameter	Type	Description
fileId	String	File identifier

Return value: The total duration in milliseconds. Returns 0 if the file is not loaded or does not exist.

getAudioFileCurrentPosition

Gets the current playback position of an audio file.

public abstract long getAudioFileCurrentPosition(@NonNull String fileId)

Parameter	Type	Description
fileId	String	File identifier

Return value: The current playback position in milliseconds. Returns 0 if the file is not loaded or does not exist.

setAudioFilePositionMillis

Sets the playback position of an audio file (seek).

public abstract int setAudioFilePositionMillis(@NonNull String fileId, long positionMillis)

Parameter	Type	Description
fileId	String	File identifier
positionMillis	long	Target playback position in milliseconds

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

setAudioFileVolume

Sets the audio file volume. Streaming and local playback volumes can be controlled separately.

public abstract int setAudioFileVolume(@NonNull String fileId, @NonNull AoqAudioStreamDirection type, int volume)

Parameter	Type	Description
fileId	String	File identifier
type	AoqAudioStreamDirection	Volume direction. AoqAudioStreamPublish controls streaming; AoqAudioStreamPlayout controls playback.
volume	int	Volume. Valid values: 0-100.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

getAudioFileVolume

Gets the current audio file volume.

public abstract int getAudioFileVolume(@NonNull String fileId, @NonNull AoqAudioStreamDirection type)

Parameter	Type	Description
fileId	String	File identifier
type	AoqAudioStreamDirection	Volume direction

Return value: The current volume (0-100). Returns 0 if the file does not exist.

External audio streams

addAudioExternalStream

Adds an external audio stream. Multiple independent streams can be created and distinguished by streamId.

public abstract int addAudioExternalStream(@NonNull String streamId, @NonNull AoqAudioExternalStreamConfig config)

Parameter	Type	Description
streamId	String	Application-defined external stream identifier
config	AoqAudioExternalStreamConfig	External audio stream configuration

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

pushAudioExternalStreamData

Feeds external PCM audio data into the specified stream.

public abstract int pushAudioExternalStreamData(@NonNull String streamId, @NonNull AoqAudioFrameData data)

Parameter	Type	Description
streamId	String	External stream identifier
data	AoqAudioFrameData	PCM audio frame data

Return value: 0 indicates success. A nonzero value indicates failure. AoqECAudioExternalBufferFull(110) is returned when the buffer is full. data needs to remain valid only during the call; the SDK copies it internally. The sample rate and channel count must match the configuration passed to addAudioExternalStream.

setAudioExternalStreamVolume

Sets the external audio stream volume. Streaming and local playback volumes can be controlled separately.

public abstract int setAudioExternalStreamVolume(@NonNull String streamId, @NonNull AoqAudioStreamDirection type, int volume)

Parameter	Type	Description
streamId	String	External stream identifier
type	AoqAudioStreamDirection	Volume direction
volume	int	Volume. Valid values: 0-100.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

getAudioExternalStreamVolume

Gets the current external audio stream volume.

public abstract int getAudioExternalStreamVolume(@NonNull String streamId, @NonNull AoqAudioStreamDirection type)

Parameter	Type	Description
streamId	String	External stream identifier
type	AoqAudioStreamDirection	Volume direction

Return value: The current volume (0-100). Returns 0 if the stream does not exist.

clearAudioExternalStreamBuffer

Clears the external audio stream buffer with optional fade-out. Commonly used to interrupt current playback.

public abstract void clearAudioExternalStreamBuffer(@NonNull String streamId, int fadeoutMs)

Parameter	Type	Description
streamId	String	External stream identifier
fadeoutMs	int	Fade-out duration in milliseconds. -1 uses the default value, 0 clears the buffer immediately, and a value greater than 0 retains the specified duration for fade-out.

Return value: None (void).

If the buffer is full, pushAudioExternalStreamData returns AoqECAudioExternalBufferFull(110). Wait 30 ms before retrying.

removeAudioExternalStream

Removes an external audio stream and releases its resources.

public abstract int removeAudioExternalStream(@NonNull String streamId)

Parameter	Type	Description
streamId	String	External stream identifier

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Audio frame callbacks

setAudioFrameObserver

Sets the audio frame listener. Pass listener=null to remove it.

public abstract int setAudioFrameObserver(@Nullable AoqClientListener.AoqAudioFrameListener listener)

Parameter	Type	Description
listener	AoqAudioFrameListener	Audio frame listener. Pass null to remove it.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Use this method to set the listener first, then call enableAudioFrameObserver to enable callbacks at the required positions.

enableAudioFrameObserver

Enables or disables audio frame callbacks at the specified position.

public abstract int enableAudioFrameObserver(boolean enabled, @NonNull AoqAudioSource audioSource, @NonNull AoqAudioObserverConfig config)

Parameter	Type	Description
enabled	boolean	true enables callbacks; false disables them.
audioSource	AoqAudioSource	Audio source position: capture, after 3A processing, publishing, or playback
config	AoqAudioObserverConfig	Callback configuration

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode. Callback data is valid only during the callback. Make a copy for asynchronous use.

Local audio volume indication

enableLocalAudioVolumeIndication

Enables or disables local captured audio volume indications. When enabled, the SDK invokes onLocalAudioVolumeIndication at config.interval intervals to report the local captured volume and whether speech is detected.

public abstract int enableLocalAudioVolumeIndication(@NonNull AoqAudioVolumeIndicationConfig config)

Parameter	Type	Description
config	AoqAudioVolumeIndicationConfig	Volume indication configuration. interval<=0 disables callbacks.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Call this method after startAudioCapture to obtain volume data. Values of interval>0 and <10 are treated as 10.

Video device management

startVideoCapture

Opens the video capture device (camera). Captured video is sent over AoqTrackTypeVideo. For external video input (pushExternalVideoCapturedFrame), set isExternal to true; the camera is not opened in this mode.

public abstract int startVideoCapture(@NonNull AoqVideoCaptureConfig config)

Parameter	Type	Description
config	AoqVideoCaptureConfig	Video capture configuration.

Return value: 0 on success; non-zero on failure (an AoqErrorCode value, such as AoqECVideoDeviceCameraAuthFailed when camera permission has not been granted).

On Android, request CAMERA permission before calling this method. Device state changes are reported through onVideoDeviceStateChanged.

stopVideoCapture

Closes the video capture device and stops local video capture.

public abstract int stopVideoCapture()

Parameters: None. Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

switchCamera

Switches between the front and rear cameras. Call this method after startVideoCapture(isExternal=false).

public abstract int switchCamera(@NonNull AoqCameraDirection direction)

Parameter	Type	Description
direction	AoqCameraDirection	Target camera direction: AoqCameraDirectionFront for the front camera and AoqCameraDirectionBack for the rear camera.

Return value: 0 on success; < 0 on failure (an AoqErrorCode value).

This method has no effect in external capture mode (isExternal=true).

setLocalView

Sets or removes the local video rendering view. Pass canvas=null or canvas.view=null to remove rendering.

public abstract int setLocalView(@NonNull AoqTrackType trackType, @Nullable AoqVideoCanvas canvas)

Parameter	Type	Description
trackType	AoqTrackType	Track type
canvas	AoqVideoCanvas	Video rendering canvas. Pass null to remove rendering.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

setRemoteView

Sets or removes the remote video rendering view. Pass canvas=null or canvas.view=null to unbind it.

public abstract int setRemoteView(@NonNull AoqTrackType trackType, @Nullable AoqVideoCanvas canvas)

Parameter	Type	Description
trackType	AoqTrackType	Track type
canvas	AoqVideoCanvas	Video rendering canvas. Pass null to unbind it.

Return value: 0 on success; non-zero on failure. If trackType is AoqTrackTypeScreen, returns AoqECUnSupport and does not bind the view.

The Screen track currently supports publishing only and has no remote video to render. Do not set trackType to AoqTrackTypeScreen.

Video encoding and external input

setVideoEncoderConfig

Configures video encoding for publishing. If isExternal=true, pushExternalVideoEncodedFrame sends encoded frames directly by trackType without re-encoding by the SDK.

public abstract int setVideoEncoderConfig(@NonNull AoqVideoCodecConfig config)

Parameter	Type	Description
config	AoqVideoCodecConfig	Video encoding configuration.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Before using pushExternalVideoEncodedFrame, call this method with isExternal=true. This mode bypasses the capture pipeline and does not require startVideoCapture/startScreenCapture. When using pushExternalVideoCapturedFrame, keep isExternal=false so that the SDK encodes the frames.

setVideoDecoderConfig

Configures video decoding for subscribed video, routed by config.trackType. Only trackType, codecType, width, height, fps, and bitrate apply to decoding. The other fields apply only to encoding.

public abstract int setVideoDecoderConfig(@NonNull AoqVideoCodecConfig config)

Parameter	Type	Description
config	AoqVideoCodecConfig	Video decoding configuration.

Return value: 0 on success; non-zero on failure. If config.trackType is AoqTrackTypeScreen, returns AoqECUnSupport and does not apply the configuration.

The Screen track currently supports publishing only, not subscribing. Do not set config.trackType to AoqTrackTypeScreen.

pushExternalVideoCapturedFrame

Pushes external raw video frames for encoding and transmission by the SDK. Frames are routed by trackType. External capture must be enabled for the corresponding track.

public abstract int pushExternalVideoCapturedFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrame frame)

Parameter	Type	Description
trackType	AoqTrackType	Track type. For AoqTrackTypeVideo, call startVideoCapture(isExternal=true) first. For AoqTrackTypeScreen, call startScreenCapture(isExternal=true) first.
frame	AoqVideoFrame	External video frame data.

Return value: 0 on success; AoqECVideoExternalCaptureNotEnabled(211) if external capture is not enabled for the track; < 0 on failure. Frame data is valid only during the call. The SDK copies it internally.

pushExternalVideoEncodedFrame

Pushes external encoded video frames. The SDK packetizes and sends them without re-encoding. Frames are consumed only after setVideoEncoderConfig(isExternal=true) is called for the corresponding trackType. startVideoCapture/startScreenCapture is not required.

public abstract int pushExternalVideoEncodedFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoEncodedFrame frame)

Parameter	Type	Description
trackType	AoqTrackType	Track type
frame	AoqVideoEncodedFrame	External encoded video frame.

Return value: 0 on success; AoqECVideoExternalEncoderNotEnabled(212) if external encoding is not enabled for the track; < 0 on failure.

frame.timeStamp is passed through unchanged. The SDK does not fill it in. The caller must ensure that timestamps increase monotonically.

pushExternalVideoCapturedFrame consumes Video frames after startVideoCapture(isExternal=true) and Screen frames after startScreenCapture(isExternal=true). If the internal buffer is full, the method returns AoqECVideoExternalBufferFull (210).

Screen capture

public abstract int startScreenCapture(@NonNull AoqScreenCaptureConfig config)
public abstract int stopScreenCapture()

trackType supports AoqTrackTypeAudio, AoqTrackTypeVideo, and AoqTrackTypeScreen. config specifies screen capture settings. Screen content is sent on the AoqTrackTypeScreen track. For start, 0 means that the request is accepted; onScreenCaptureStateChanged reports the result asynchronously. A nonzero return rejects the request synchronously. Stop returns 0 on success or a nonzero value on failure, and reports the stopped state through this callback. With isExternal=false, the SDK captures through MediaProjection. Starting capture again while it is active returns AoqECStateInvalid; stopping is idempotent. For external raw frames, set isExternal=true and supply raw Screen frames through pushExternalVideoCapturedFrame for SDK encoding. For external encoded frames, configure the Screen track for external encoding with setVideoEncoderConfig, then call pushExternalVideoEncodedFrame; startScreenCapture is not required.

Media stream transmission control

enableSendMediaStream

Enables or disables sending a local media stream, selected by trackType. When sending is disabled, capture and encoding continue, but data is not sent over the network.

public abstract int enableSendMediaStream(@NonNull AoqTrackType trackType, boolean enable)

Parameter	Type	Description
trackType	AoqTrackType	Track type. Supports AoqTrackTypeAudio/AoqTrackTypeVideo/AoqTrackTypeScreen.
enable	boolean	true enables sending; false disables sending.

Return value: 0 indicates a successful call. A value less than 0 indicates failure and corresponds to AoqErrorCode.

After initialization, call enableSendMediaStream(false) first. Enable sending after onConnectionStatusChange reports Connected to avoid losing data before the connection is established.

Video frame callbacks

setVideoFrameObserver

Sets the video frame listener. Pass listener=null to remove it.

public abstract int setVideoFrameObserver(@Nullable AoqClientListener.AoqVideoFrameListener listener)

Parameter	Type	Description
listener	AoqVideoFrameListener	Video frame listener. Pass null to remove it.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Use this method to set the listener first, then call enableVideoFrameObserver to enable callbacks at the required positions.

enableVideoFrameObserver

Enables or disables video frame callbacks at the specified position.

public abstract int enableVideoFrameObserver(boolean enabled, @NonNull AoqVideoSource videoSource, @NonNull AoqVideoObserverConfig config)

Parameter	Type	Description
enabled	boolean	true enables callbacks; false disables them.
videoSource	AoqVideoSource	Video source position: after capture, before encoding, or after remote decoding
config	AoqVideoObserverConfig	Callback configuration. Use config.trackType to observe the Video or Screen track.

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

Callbacks run on internal SDK threads. Do not perform time-consuming operations in them. Only I420 supports read-write mode (mode=ReadWrite); other formats are read-only.

Real-time messages

sendDataMsg

Sends a real-time data message to the remote end. Call this method after connect succeeds and enableSendMediaStream(Data, true) is called.

public abstract int sendDataMsg(@NonNull AoqDataMsg msg)

Parameter	Type	Description
msg	AoqDataMsg	Data message

Return value: 0 indicates success. A nonzero value indicates failure and corresponds to AoqErrorCode.

The remote end receives the message through onDataMsg. Message size is subject to internal SDK limits. Split oversized messages into smaller parts before sending.

AoqClientListener callbacks

onError

Engine error callback. Triggered when an unrecoverable error occurs.

public void onError(int code, String message)

Parameter	Type	Description
code	int	Error code corresponding to an AoqErrorCode enum value
message	String	Error description

Return value: None (void).

onWarning

Engine warning callback. Triggered by recoverable exceptions that do not prevent the SDK from continuing to run.

public void onWarning(int code, String message)

Parameter	Type	Description
code	int	Warning code corresponding to an AoqWarningCode enum value
message	String	Warning description

Return value: None (void).

onConnectionStatusChange

Connection state change callback. State transitions: Disconnected → Connecting → Connected/Failed → Disconnected.

public void onConnectionStatusChange(@NonNull AoqClientEngine.AoqConnectionStatus status)

Parameter	Type	Description
status	AoqConnectionStatus	Current connection state

Return value: None (void).

Enable media sending with enableSendMediaStream(true) after receiving Connected.

onStats

Engine statistics callback. The SDK periodically reports audio/video publishing and subscription statistics and network statistics to monitor call quality and network conditions and diagnose audio/video issues.

public void onStats(@NonNull AoqClientEngine.AoqStats stats)

Parameter	Type	Description
stats	AoqStats	Statistics for audio/video/data message publishing and subscription, and network statistics

Return value: None (void).

onAudioDeviceStateChanged

Callback for audio device capture/playback state changes.

public void onAudioDeviceStateChanged(@NonNull AoqClientEngine.AoqAudioDeviceState state)

Parameter	Type	Description
state	AoqAudioDeviceState	Audio device state, including state (state code) and reason (error reason)

Return value: None (void).

onAudioDeviceRouteChanged

Callback for audio output route changes.

public void onAudioDeviceRouteChanged(int routeType)

Parameter	Type	Description
routeType	int	Current audio output route, corresponding to an AoqAudioDeviceRouteType enum value

Return value: None (void).

onAudioDeviceInterrupted

Audio device interruption callback. Triggered by system interruptions, such as incoming calls or another app taking audio focus.

public void onAudioDeviceInterrupted(boolean interrupt)

Parameter	Type	Description
interrupt	boolean	true indicates interruption; false indicates recovery from interruption.

Return value: None (void).

onScreenCaptureStateChanged

Reports screen capture state changes using AoqScreenCaptureStateCode and the unified AoqErrorCode. Notifications are delivered in order on the Android main thread.

public void onScreenCaptureStateChanged(@NonNull AoqClientEngine.AoqScreenCaptureState state)

Parameter	Type	Description
state	AoqScreenCaptureState	Screen capture state, including state (state code) and reason (error cause).

Return value: None (void).

Started indicates that capture or external input is ready, not that media has been sent. Fail and Stopped are terminal states after cleanup. Capture failures are reported only through this callback.

onVideoDeviceStateChanged

Callback for video device capture state changes.

public void onVideoDeviceStateChanged(@NonNull AoqClientEngine.AoqVideoDeviceState state)

Parameter	Type	Description
state	AoqVideoDeviceState	Video device state, including state (state code) and reason (error reason)

Return value: None (void).

onAudioDeviceFocusChanged

Callback for audio focus changes.

public void onAudioDeviceFocusChanged(int audioFocus)

Parameter	Type	Description
audioFocus	int	Android AUDIOFOCUS_* constant, such as AUDIOFOCUS_GAIN, AUDIOFOCUS_LOSS, or AUDIOFOCUS_LOSS_TRANSIENT

Return value: None (void).

onAudioFileState

Audio file playback state callback.

public void onAudioFileState(@NonNull AoqClientEngine.AoqAudioFileState state)

Parameter	Type	Description
state	AoqAudioFileState	Audio file playback state, including fileId, stateCode, and errorCode

Return value: None (void).

onLocalAudioVolumeIndication

Reports the locally captured audio volume. Triggered only after volume indications are enabled through enableLocalAudioVolumeIndication.

public void onLocalAudioVolumeIndication(@NonNull AoqClientEngine.AoqAudioVolume volume)

Parameter	Type	Description
volume	AoqAudioVolume	Local volume information, including isSpeech (whether speech is detected) and volume (smoothed instantaneous volume [0-255]).

Return value: None (void). AoqClientListener is the unified delivery point for all asynchronous events from the SDK. All callback methods have a default empty implementation, so you only need to override the ones you care about.

onDataMsg

Callback for received real-time data messages.

public void onDataMsg(@NonNull AoqClientEngine.AoqDataMsg msg)

Parameter	Type	Description
msg	AoqDataMsg	Data message

Return value: None (void). Message data is valid only during the callback. Make a copy for asynchronous use.

AoqAudioFrameListener callbacks

Audio frame listener interface. All methods have empty default implementations and can be overridden as needed.

public interface AoqAudioFrameListener {
    default void onCapturedAudioFrame(@NonNull AoqAudioFrameData frame) {}
    default void onProcessCapturedAudioFrame(@NonNull AoqAudioFrameData frame) {}
    default void onPublishAudioFrame(@NonNull AoqTrackType trackType, @NonNull AoqAudioFrameData frame) {}
    default void onPlaybackAudioFrame(@NonNull AoqAudioFrameData frame) {}
}

Method	When triggered	Parameter
onCapturedAudioFrame	When a raw audio frame is captured	frame: AoqAudioFrameData
onProcessCapturedAudioFrame	Audio frame after 3A processing	frame: AoqAudioFrameData
onPublishAudioFrame	Audio frame before publishing	trackType: track type; frame: AoqAudioFrameData
onPlaybackAudioFrame	Remote audio frame before playback	frame: AoqAudioFrameData

Return value: None (void). Frame data is valid only during the callback.

onCapturedAudioFrame

Called when a raw audio frame is captured. The frame contains unprocessed PCM data.

void onCapturedAudioFrame(@NonNull AoqAudioFrameData frame)

Parameter	Type	Description
frame	AoqAudioFrameData	Captured audio frame data

Return value: None (void).

frame.dataPtr references SDK-managed memory and is valid only during the callback. Copy the data before using it asynchronously.

onProcessCapturedAudioFrame

Called for an audio frame after 3A processing, such as echo cancellation and noise suppression.

void onProcessCapturedAudioFrame(@NonNull AoqAudioFrameData frame)

Parameter	Type	Description
frame	AoqAudioFrameData	Audio frame data after 3A processing

Return value: None (void).

frame.dataPtr references SDK-managed memory and is valid only during the callback. Copy the data before using it asynchronously.

onPublishAudioFrame

Called for an audio frame before publishing, immediately before encoding and transmission.

void onPublishAudioFrame(@NonNull AoqTrackType trackType, @NonNull AoqAudioFrameData frame)

Parameter	Type	Description
trackType	AoqTrackType	Track type
frame	AoqAudioFrameData	Audio frame data before publishing

Return value: None (void).

frame.dataPtr references SDK-managed memory and is valid only during the callback. Copy the data before using it asynchronously.

onPlaybackAudioFrame

Called for a remote audio frame before playback, after decoding and mixing.

void onPlaybackAudioFrame(@NonNull AoqAudioFrameData frame)

Parameter	Type	Description
frame	AoqAudioFrameData	Remote audio frame data before playback

Return value: None (void).

frame.dataPtr references SDK-managed memory and is valid only during the callback. Copy the data before using it asynchronously.

AoqVideoFrameListener callbacks

Video frame listener interface. All methods have default implementations that return false, indicating no data modification. Each of the three callbacks includes trackType to distinguish Video and Screen tracks.

public interface AoqVideoFrameListener {
    default boolean onCapturedVideoFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrameData frame) { return false; }
    default boolean onPreEncodeVideoFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrameData frame) { return false; }
    default boolean onRemoteVideoFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrameData frame) { return false; }
}

Method	When triggered	Parameter
onCapturedVideoFrame	When a raw video frame is captured (before preprocessing)	trackType: track type; frame: AoqVideoFrameData
onPreEncodeVideoFrame	Video frame before encoding (after preprocessing)	trackType: track type; frame: AoqVideoFrameData
onRemoteVideoFrame	Remote video frame after decoding and before rendering	trackType: track type; frame: AoqVideoFrameData

Return value: boolean. true indicates that the data was modified and must be written back to the SDK (supported only for I420). false indicates no modification.

Callbacks are triggered only after enableVideoFrameObserver enables the corresponding AoqVideoSource. frame.data and textureId reference internal SDK memory and are valid only during the callback. Make a copy for asynchronous use.

onCapturedVideoFrame

Called when a raw video frame is captured, before preprocessing.

boolean onCapturedVideoFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrameData frame)

Parameter	Type	Description
trackType	AoqTrackType	Track type (Video/Screen)
frame	AoqVideoFrameData	Captured video frame data

Return value: boolean. true indicates that modified data must be written back to the SDK (supported only for I420). false indicates no modification.

onPreEncodeVideoFrame

Called for a video frame after preprocessing and before encoding.

boolean onPreEncodeVideoFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrameData frame)

Parameter	Type	Description
trackType	AoqTrackType	Track type (Video/Screen)
frame	AoqVideoFrameData	Video frame data before encoding

Return value: boolean. true indicates that modified data must be written back to the SDK (supported only for I420). false indicates no modification.

onRemoteVideoFrame

Called for a remote video frame after decoding and before rendering.

boolean onRemoteVideoFrame(@NonNull AoqTrackType trackType, @NonNull AoqVideoFrameData frame)

Parameter	Type	Description
trackType	AoqTrackType	Track type (Video/Screen)
frame	AoqVideoFrameData	Decoded remote video frame data

Return value: boolean. true indicates that modified data must be written back to the SDK (supported only for I420). false indicates no modification.

Data types and enumerations

Common types

AoqRelayEndpoint

Relay endpoint.

Field	Type	Default value	Description
routeIndex	int	-1	Route index
endpoint	String	""	Relay server domain name or IP address
port	int	0	Relay server UDP port
tcpPort	int	0	Relay server TCP port

AoqTrackParam

Track properties.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeAudio	Track type
trackMode	AoqTrackMode	AoqTrackModeSegment	Streaming or non-streaming mode. Applies only to downstream audio.

AoqTrackParam.trackMode

Field	Type	Default	Description
trackMode	AoqTrackMode	AoqTrackModeSegment	Applies only to downstream audio.

AoqCreateConfig

Field	Type	Default	Description
workDir	String	""	SDK working directory
isBTScoMode	boolean	false	true: Bluetooth SCO mode; false: A2DP mode
enableDumpAudio	boolean	false	Enable audio dump (for debugging)
extras	String	""	Extra parameters string
maxEncodedVideoFrameBytes	int	190 × 1024	Maximum encoded frame size in bytes. Applies only to the SDK internal JPEG encoder.
enableDropOversizedVideoFrame	boolean	false	For the SDK internal JPEG encoder, whether to drop a frame that remains oversized at the lowest quality.

AoqConnectConfig subscribeTracks must not include AoqTrackTypeScreen; otherwise, connect returns AoqECUnSupport without starting a connection. setRemoteView also returns AoqECUnSupport for Screen.

Field	Type	Default	Description
token	String	""	Authentication token
sid	String	""	Session ID
certFingerprint	String	""	Server certificate fingerprint
relayEndpoints	List<AoqRelayEndpoint>	empty	List of Relay endpoints
workspaceIdHash	String	""	Workspace ID hash
publishTracks	List<AoqTrackParam>	empty	Local tracks to publish
subscribeTracks	List<AoqTrackParam>	empty	Remote tracks to subscribe to

Statistics types

AoqNetworkStats

Field	Type	Description
sendBitrate	int	Send bitrate (bps)
sendBytes	long	Cumulative bytes sent
recvBitrate	int	Receive bitrate (bps)
recvBytes	long	Cumulative bytes received
loss	int	Packet loss rate (0–100)
rtt	int	Round-trip time (ms)

AoqStats

Engine statistics. Reported periodically through onStats. All fields can be null.

Field	Type	Description
audioPublishStats	AoqAudioPublishStats array	Audio publishing statistics array (@Nullable)
videoPublishStats	AoqVideoPublishStats array	Video publishing statistics array (@Nullable)
dataMsgPublishStats	AoqDataMsgPublishStats array	Data message publishing statistics array (@Nullable)
audioSubscribeStats	AoqAudioSubscribeStats array	Audio subscription statistics array (@Nullable)
videoSubscribeStats	AoqVideoSubscribeStats array	Video subscription statistics array (@Nullable)
dataMsgSubscribeStats	AoqDataMsgSubscribeStats array	Data message subscription statistics array (@Nullable)
networkStats	AoqNetworkStats	Network statistics (@Nullable)

AoqAudioPublishStats

Audio publishing statistics.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeAudio	Track type
bitrate	int	0	Bitrate in bps
bytes	long	0	Total bytes sent
encodeVolume	int	0	Publishing encoding volume

AoqVideoPublishStats

Video publishing statistics.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeVideo	Track type
bitrate	int	0	Bitrate in bps
bytes	long	0	Total bytes sent
encodeFps	int	0	Encoding frame rate

AoqDataMsgPublishStats

Data message publishing statistics.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeData	Track type
bitrate	int	0	Bitrate in bps
bytes	long	0	Total bytes sent

AoqAudioSubscribeStats

Audio subscription statistics.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeAudio	Track type
bitrate	int	0	Bitrate in bps
bytes	long	0	Total bytes received
playVolume	int	0	Playback volume

AoqVideoSubscribeStats

Video subscription statistics.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeVideo	Track type
bitrate	int	0	Bitrate in bps
bytes	long	0	Total bytes received
decodeFps	int	0	Decoding frame rate
renderFps	int	0	Rendering frame rate

AoqDataMsgSubscribeStats

Data message subscription statistics.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeData	Track type
bitrate	int	0	Bitrate in bps
bytes	long	0	Total bytes received

Enumerations

AoqTrackMode

Value	Number	Description
AoqTrackModeSegment	0	Segment mode: delivers data in semantic segments, such as sentences. Applies only to downstream audio.
AoqTrackModeStream	1	Stream mode: delivers data continuously. Applies only to downstream audio.

AoqErrorCode

Enum value	Value	Description
AoqECOK	0	Success
AoqECParamInvalid	1	Invalid parameter
AoqECStateInvalid	2	Invalid state
AoqECUnSupport	3	Not supported
AoqECAudio	100	Audio generic error
AoqECAudioExternalBufferFull	110	External audio buffer full
AoqECAudioDevice	120	Audio device generic error
AoqECAudioDeviceRecordingAuthFailed	121	Recording permission not granted
AoqECAudioDeviceRecordingOccupied	122	Recording device in use
AoqECAudioDeviceRecordingBackgroundStart	123	Failed to start recording in background
AoqECAudioDeviceRecordingStartFail	124	Recording start failed
AoqECAudioDevicePlayoutOccupied	125	Playback device in use
AoqECAudioDevicePlayoutBackgroundStart	126	Failed to start playback in background
AoqECAudioDevicePlayoutStartFail	127	Playback start failed
AoqECAudioDeviceEarpieceRequiresVoipMode	128	Earpiece requires VoIP mode
AoqECVideo	200	Video generic error
AoqECVideoExternalBufferFull	210	External video buffer full
AoqECVideoExternalCaptureNotEnabled	211	External video capture not enabled
AoqECVideoExternalEncoderNotEnabled	212	External video encoder not enabled
AoqECVideoDevice	220	Video device generic error
AoqECVideoDeviceCameraOpenFail	221	Camera open failed
AoqECVideoDeviceCameraAuthFailed	222	Camera permission not granted
AoqECVideoDeviceCameraOccupied	223	Camera in use
AoqECVideoDeviceCameraRunningError	224	Camera runtime error
AoqECVideoCodec	230	Video codec generic error
AoqECVideoCodecEncoderInitFail	231	Video encoder initialization failed
AoqECVideoRender	240	Video rendering generic error
AoqECVideoRenderCreateFail	241	Video renderer creation failed
AoqECVideoRenderDrawError	242	Video rendering draw error
AoqECScreen	300	General screen sharing error
AoqECScreenAuthFailed	310	Screen sharing permission denied
AoqECScreenStartFailed	311	Failed to start screen sharing

AoqWarningCode

Enum value	Value	Description
AoqWCOK	0	No warning
AoqWCAudio	100	Audio generic warning
AoqWCAudioHowling	101	Audio howling detected
AoqWCAudioDevice	120	Audio device generic warning
AoqWCAudioDeviceMicEnumerateError	121	Microphone enumeration error
AoqWCAudioDeviceMicStartTimeout	122	Microphone start timeout
AoqWCAudioDeviceRecordingError	123	Recording error
AoqWCAudioDeviceSpeakerEnumerateError	124	Speaker enumeration error
AoqWCAudioDeviceSpeakerStartTimeout	125	Speaker start timeout
AoqWCAudioDevicePlayoutError	126	Playback error
AoqWCVideo	200	Video generic warning
AoqWCVideoCameraEnumerateError	201	Camera enumeration error
AoqWCVideoEncoderSwitched	202	Video encoder switched
AoqWCVideoRenderDowngrade	203	Video rendering downgraded

AoqTrackType

Enum value	Value	Description
AoqTrackTypeAudio	0	Audio track
AoqTrackTypeVideo	1	Video track
AoqTrackTypeData	2	Data messaging track
AoqTrackTypeScreen	3	Screen sharing track. Uplink only.

AoqEncoderType

Enum value	Value	Description
AoqEncoderTypeUnknown	0	Unknown format
AoqEncoderTypeAudioPCM	1	Audio PCM
AoqEncoderTypeAudioOpus	2	Audio Opus
AoqEncoderTypeVideoH264	3	Video H.264
AoqEncoderTypeVideoJpeg	4	Video JPEG
AoqEncoderTypeDataText	5	Data text

AoqConnectionStatus

Enum value	Value	Description
AoqConnectionStatusDisconnected	0	Disconnected
AoqConnectionStatusConnecting	1	Connecting
AoqConnectionStatusConnected	2	Connected
AoqConnectionStatusFailed	3	Connection failed

AoqMirrorMode

Mirror mode.

Enum value	Value	Description
AoqMirrorModeDisabled	0	Mirroring disabled
AoqMirrorModeEnabled	1	Mirroring enabled

AoqOrientationMode

Video orientation.

Enum value	Value	Description
AoqOrientationModeAuto	0	Automatic
AoqOrientationModePortrait	1	Portrait
AoqOrientationModeLandscape	2	Landscape

Audio types

AoqAudioCaptureConfig

Field	Type	Default	Description
isExternal	boolean	false	Whether to use external capture mode
isVoipMode	boolean	false	Whether to enable VoIP mode (affects device routing, e.g., earpiece)
channel	int	1	Channel count (default: mono)

AoqAudioPlaybackConfig

Field	Type	Default	Description
isVoipMode	boolean	false	Whether to enable VoIP mode (hardware AEC); applies to mobile
isDefaultSpeaker	boolean	true	Whether to default to the speaker; applies to mobile
isExternal	boolean	false	Whether to use external playback mode
channel	int	1	Channel count (default: mono)

AoqAudioCodecConfig

Field	Type	Default	Description
trackType	AoqTrackType	Audio	Track type
codecType	AoqEncoderType	AudioOpus	Codec format
sampleRate	int	48000	Sample rate (Hz)
channel	int	1	Channel count
bitrate	int	32000	Bitrate (bps)

AoqAudioDeviceStateCode

Audio device capture and playback state codes.

Enum value	Value	Description
AoqAudioDeviceNone	0	No state
AoqAudioDeviceRecordStarting	1	Capture starting
AoqAudioDeviceRecordStarted	2	Capture started
AoqAudioDeviceRecordStopping	3	Capture stopping
AoqAudioDeviceRecordStopped	4	Capture stopped
AoqAudioDeviceRecordFail	5	Capture failed
AoqAudioDevicePlayStarting	6	Playback starting
AoqAudioDevicePlayStarted	7	Playback started
AoqAudioDevicePlayStopping	8	Playback stopping
AoqAudioDevicePlayStopped	9	Playback stopped
AoqAudioDevicePlayFail	10	Playback failed

AoqAudioDeviceState

Audio device capture and playback state.

Field	Type	Default value	Description
state	AoqAudioDeviceStateCode	AoqAudioDeviceNone	Device operation state
reason	int	0	Error reason code (see AoqErrorCode)

AoqAudioDeviceRouteType

Audio device route types.

Enum value	Value	Description
AoqAudioDeviceRouteDefault	0	Default route
AoqAudioDeviceRouteHeadset	1	Headset with microphone
AoqAudioDeviceRouteEarpiece	2	Earpiece
AoqAudioDeviceRouteHeadsetNoMic	3	Headset without microphone
AoqAudioDeviceRouteSpeakerPhone	4	Speaker
AoqAudioDeviceRouteUsb	5	USB audio device
AoqAudioDeviceRouteBluetooth	6	Bluetooth SCO mode
AoqAudioDeviceRouteBluetoothA2dp	7	Bluetooth A2DP mode

Audio file types

AoqAudioFileMixConfig

Audio file playback configuration.

Field	Type	Default value	Description
fileName	String	""	File name including its path. Must not be empty.
cycles	int	-1	Loop count. -1 loops indefinitely.
startPosMs	long	0	Initial playback position in milliseconds
publishVolume	int	100	Publishing volume. Valid values: 0-100.
playoutVolume	int	100	Playback volume. Valid values: 0-100.

AoqAudioFileStateCode

Audio file playback state codes.

Enum value	Value	Description
AoqAudioFileNone	0	No state
AoqAudioFileStarted	1	Playback started
AoqAudioFileStopped	2	Playback stopped
AoqAudioFilePaused	3	Playback paused
AoqAudioFileResumed	4	Playback resumed
AoqAudioFileEnded	5	Playback ended
AoqAudioFileBuffering	6	Playback buffering
AoqAudioFileBufferingEnd	7	Buffering ended
AoqAudioFileFailed	8	Playback failed

AoqAudioFileErrorCode

Audio file playback error codes.

Enum value	Value	Description
AoqAudioFileNoError	0	No error
AoqAudioFileOpenFailed	1	Failed to open file
AoqAudioFileDecodeFailed	2	Failed to decode file

AoqAudioFileState

Audio file state.

Field	Type	Default value	Description
fileId	String	""	File identifier
stateCode	AoqAudioFileStateCode	AoqAudioFileNone	File playback state code
errorCode	AoqAudioFileErrorCode	AoqAudioFileNoError	File error code

External audio stream and volume types

AoqAudioExternalStreamToggle

External audio stream toggle states.

Enum value	Value	Description
AoqAudioExternalStreamToggleNormal	0	Normal state
AoqAudioExternalStreamTogglePause	1	Paused state

AoqAudioFrameData

External audio frame data.

Field	Type	Default value	Description
dataPtr	byte array	null	Raw PCM audio data (@Nullable)
dataSize	int	0	PCM data size in bytes
numOfSamples	int	0	Number of samples per channel
bytesPerSample	int	0	Bytes per sample
numOfChannels	int	0	Number of channels
samplesPerSec	int	0	Samples per second (sample rate)
pushSequence	int	0	PCM input round
timeStamp	long	0	Timestamp
autoGenMute	boolean	false	Valid in data callbacks. true indicates SDK-generated silence.

AoqAudioSource

Audio frame callback data sources.

Enum value	Value	Description
AoqAudioSourceCaptured	0	Captured audio data
AoqAudioSourceProcessCaptured	1	Audio data after 3A processing
AoqAudioSourcePublish	2	Published audio data
AoqAudioSourcePlayback	3	Playback audio data

AoqAudioObserverMode

Audio frame callback modes.

Enum value	Value	Description
AoqAudioObserverModeReadOnly	0	Read-only mode
AoqAudioObserverModeReadWrite	1	Read-write mode

AoqAudioObserverConfig

Audio frame callback configuration.

Field	Type	Default value	Description
sampleRate	int	48000	Callback audio sample rate in Hz
channels	int	1	Callback audio channel count
mode	AoqAudioObserverMode	AoqAudioObserverModeReadOnly	Read-write mode

AoqAudioVolumeIndicationConfig

Field	Type	Default	Description
reportSpeech	boolean	false	Whether to detect speech.
interval	int	0	Callback interval in milliseconds. Values of 0 or less disable callbacks; values between 0 and 10 use 10.
smooth	int	3	Smoothing factor, from 0 to 10. Higher values produce smoother results.

AoqAudioVolume

Field	Type	Default	Description
isSpeech	boolean	false	Whether speech is detected.
volume	int	0	Smoothed instantaneous volume, from 0 to 255.

Video types

AoqRenderMode

Rendering modes.

Enum value	Value	Description
AoqRenderModeAuto	0	Automatic mode
AoqRenderModeStretch	1	Stretch mode
AoqRenderModeFill	2	Fill mode
AoqRenderModeCrop	3	Crop mode

AoqVideoCanvas

Video rendering canvas.

Field	Type	Default value	Description
view	View	null	Android View used for rendering (@Nullable)
renderMode	AoqRenderMode	AoqRenderModeAuto	Rendering mode

AoqCameraDirection

Camera direction.

Enum value	Value	Description
AoqCameraDirectionFront	0	Front camera
AoqCameraDirectionBack	1	Rear camera

AoqScreenCaptureConfig

Field	Type	Default	Description
isExternal	boolean	false	Whether the application supplies raw screen frames.
mediaProjectionIntent	Intent	null	Pass an existing MediaProjection permission intent, or null to let the SDK request permission. Ignored for external capture.
notificationFactory	AoqScreenShareNotificationFactory	null	Foreground service notification factory. Null uses the default notification. Ignored for external capture.

AoqVideoCaptureConfig

Field	Type	Default	Description
width	int	1280	Capture width (pixels); ignored when `isExternal=true`
height	int	720	Capture height (pixels); ignored when `isExternal=true`
fps	int	15	Capture frame rate; ignored when `isExternal=true`
isExternal	boolean	false	External capture mode; when true, the camera is not opened
cameraDirection	AoqCameraDirection	Front	Camera direction; ignored when `isExternal=true`

AoqVideoCodecConfig

Field	Type	Default	Description
trackType	AoqTrackType	Video	Track type
codecType	AoqEncoderType	VideoH264	Codec format
width	int	540	Encoding width (pixels)
height	int	960	Encoding height (pixels)
fps	int	5	Encoding frame rate
bitrate	int	500000	Target bitrate (bps)
minBitrate	int	128000	Minimum bitrate (bps)
keyframeInterval	int	2	Keyframe interval (seconds)
mirrorMode	AoqMirrorMode	Disabled	Mirror mode
orientationMode	AoqOrientationMode	Auto	Video orientation mode
isExternal	boolean	false	When true, the SDK skips re-encoding; use `pushExternalVideoEncodedFrame` to deliver pre-encoded data

AoqVideoPixelFormat

Enum value	Value	Description
AoqVideoPixelFormatUnknown	0	Unknown format
AoqVideoPixelFormatI420	1	I420 (YUV planar)
AoqVideoPixelFormatNV12	2	NV12 (YUV semi-planar)
AoqVideoPixelFormatNV21	3	NV21 (YUV semi-planar)
AoqVideoPixelFormatBGRA	4	BGRA 32-bit
AoqVideoPixelFormatRGBA	5	RGBA 32-bit
AoqVideoPixelFormatTextureOES	7	External OES texture
AoqVideoPixelFormatTexture2D	8	Standard 2D texture

AoqVideoFrame

External video data.

Field	Type	Default value	Description
format	AoqVideoPixelFormat	AoqVideoPixelFormatUnknown	Pixel format
width	int	0	Video width in pixels
height	int	0	Video height in pixels
data	byte array	null	Packed-format data (NV12/NV21/BGRA/RGBA) (@Nullable)
dataY	byte array	null	I420 Y plane data (@Nullable)
dataU	byte array	null	I420 U plane data (@Nullable)
dataV	byte array	null	I420 V plane data (@Nullable)
strideY	int	0	Y plane stride
strideU	int	0	U plane stride
strideV	int	0	V plane stride
textureId	int	0	Texture ID (valid for TEXTURE_OES/TEXTURE_2D)
transformMatrix	float array	null	4×4 row-major texture transformation matrix (@Nullable)
eglContext	EGLContext	null	Shared EGL context (@Nullable)
timeStamp	long	0	Timestamp in milliseconds. If 0, the SDK fills it in using the local clock.

AoqVideoCodecType

Codec type for externally encoded frames.

Enum value	Value	Description
AoqVideoCodecTypeJPEG	0	JPEG encoding

AoqVideoEncodedFrame

Externally encoded video frame. The application encodes the frame; the SDK packages and sends it without re-encoding.

Field	Type	Default value	Description
codec	AoqVideoCodecType	AoqVideoCodecTypeJPEG	Encoding format
data	byte array	null	Encoded data (@Nullable)
width	int	0	Width in pixels
height	int	0	Height in pixels
timeStamp	long	0	Timestamp in milliseconds. If 0, the SDK fills it in using the local clock.

AoqVideoDeviceStateCode

Video device capture state codes.

Enum value	Value	Description
AoqVideoDeviceNone	0	No state
AoqVideoDeviceCaptureStarting	1	Capture starting
AoqVideoDeviceCaptureStarted	2	Capture started
AoqVideoDeviceCaptureStopping	3	Capture stopping
AoqVideoDeviceCaptureStopped	4	Capture stopped
AoqVideoDeviceCaptureFail	5	Capture failed

AoqVideoDeviceState

Video device capture state.

Field	Type	Default value	Description
state	AoqVideoDeviceStateCode	AoqVideoDeviceNone	Device capture state
reason	int	0	Error reason code (see AoqErrorCode)

AoqAudioExternalStreamConfig

Field	Type	Default	Description
trackType	AoqTrackType	Audio	Audio track type
codecType	AoqEncoderType	AudioPCM	Audio stream format
channels	int	1	Channel count
sampleRate	int	48000	Sample rate (Hz)
playoutVolume	int	100	Playback volume [0–100]
publishVolume	int	100	Publishing volume [0–100]
maxBufferDuration	int	1000	Maximum buffer duration (milliseconds)
enable3A	boolean	false	Whether to apply 3A processing to input PCM

AoqAudioStreamDirection

Enum value	Value	Description
AoqAudioStreamPublish	0	Publish stream (send)
AoqAudioStreamPlayout	1	Playout stream (receive)

AoqScreenCaptureStateCode

Value	Number	Description
AoqScreenCaptureNone	0	None
AoqScreenCaptureStarting	1	Starting
AoqScreenCaptureStarted	2	Input ready; does not indicate transmission
AoqScreenCaptureStopping	3	Stopping
AoqScreenCaptureStopped	4	Stopped
AoqScreenCaptureFail	5	Start or runtime failure

AoqScreenCaptureState

Field	Type	Default	Description
state	AoqScreenCaptureStateCode	AoqScreenCaptureNone	Screen capture state.
reason	int	0	0 for normal states; an AoqErrorCode on failure.

AoqScreenShareNotificationFactory

public interface AoqScreenShareNotificationFactory {
    @Nullable Notification createNotification(@NonNull Context serviceContext);
}

Return null to use the default notification. Create the NotificationChannel with createNotificationChannel before returning a custom notification; otherwise, the foreground service fails to start.

Video frame callback types

AoqVideoSource

Video frame callback data sources (pipeline positions).

Enum value	Value	Description
AoqVideoSourceCaptured	0	Video data after capture (before preprocessing)
AoqVideoSourcePreEncode	1	Video data before encoding (after preprocessing)
AoqVideoSourceRemote	2	Remote video data after decoding and before rendering

AoqVideoObserverMode

Video frame callback modes.

Enum value	Value	Description
AoqVideoObserverModeReadOnly	0	Read-only mode
AoqVideoObserverModeReadWrite	1	Read-write mode

AoqVideoObserverAlignment

Video output width alignment.

Enum value	Value	Description
AoqVideoObserverAlignmentDefault	0	Default alignment
AoqVideoObserverAlignmentEven	1	Even alignment
AoqVideoObserverAlignment4	2	4-byte alignment
AoqVideoObserverAlignment8	3	8-byte alignment
AoqVideoObserverAlignment16	4	16-byte alignment

AoqVideoObserverConfig

Video frame callback configuration.

Field	Type	Default value	Description
trackType	AoqTrackType	AoqTrackTypeVideo	Video track to observe. Only Video and Screen are supported.
format	AoqVideoPixelFormat	AoqVideoPixelFormatI420	Desired callback pixel format
alignment	AoqVideoObserverAlignment	AoqVideoObserverAlignmentDefault	Width alignment policy
mode	AoqVideoObserverMode	AoqVideoObserverModeReadOnly	Read/write mode. Only I420 supports read-write access.
mirrorApplied	boolean	false	Whether to mirror callback data

AoqVideoFrameData

Video frame callback data. The byte/texture fields reference internal SDK memory and are valid only during the callback. Make a copy for asynchronous use.

Field	Type	Default value	Description
format	AoqVideoPixelFormat	AoqVideoPixelFormatUnknown	Pixel format
width	int	0	Width in pixels
height	int	0	Height in pixels
data	ByteBuffer	null	Packed-format data (NV12/NV21/BGRA/RGBA). The direct ByteBuffer references native memory (@Nullable).
dataY	ByteBuffer	null	I420 Y plane (@Nullable)
dataU	ByteBuffer	null	I420 U plane (@Nullable)
dataV	ByteBuffer	null	I420 V plane (@Nullable)
strideY	int	0	Y plane stride
strideU	int	0	U plane stride
strideV	int	0	V plane stride
textureId	int	0	Texture ID (valid for TEXTURE_OES/TEXTURE_2D)
transformMatrix	float array	null	4×4 row-major texture transformation matrix (valid for TEXTURE_OES/TEXTURE_2D) (@Nullable)
timeStamp	long	0	Timestamp in milliseconds

Data message types

AoqDataMsg

Field	Type	Default	Description
data	byte[]	new byte[0]	Message data (byte array)

​API index

​Engine lifecycle

​Audio device management

​Audio encoding configuration

​Audio file playback

​External audio streams

​Audio frame callbacks

​Local audio volume indication

​Video device management

​Video encoding and external input

​Screen capture

​Media stream transmission control

​Video frame callbacks

​Real-time messages

​AoqClientListener callbacks

​AoqAudioFrameListener callbacks

​AoqVideoFrameListener callbacks

​API details

​Engine lifecycle

​Audio device management

​startAudioCapture

​stopAudioCapture

​muteAudioCapture

​startAudioPlayer

​stopAudioPlayer

​pauseAudioPlayer

​resumeAudioPlayer

​interruptAudioPlayer

​enableSpeakerphone

​isSpeakerphoneEnabled

​Audio encoding configuration

​setAudioEncoderConfig

​setAudioDecoderConfig

​Audio file playback

​startAudioFile

​stopAudioFile

​pauseAudioFile

​resumeAudioFile

​getAudioFileDuration

​getAudioFileCurrentPosition

​setAudioFilePositionMillis

​setAudioFileVolume

​getAudioFileVolume

​External audio streams

​addAudioExternalStream

​pushAudioExternalStreamData

​setAudioExternalStreamVolume

​getAudioExternalStreamVolume

​clearAudioExternalStreamBuffer

​removeAudioExternalStream

​Audio frame callbacks

​setAudioFrameObserver

​enableAudioFrameObserver

​Local audio volume indication

​enableLocalAudioVolumeIndication

​Video device management

​startVideoCapture

​stopVideoCapture

​switchCamera

​setLocalView

​setRemoteView

​Video encoding and external input

​setVideoEncoderConfig

​setVideoDecoderConfig

​pushExternalVideoCapturedFrame

​pushExternalVideoEncodedFrame

​Screen capture

​Media stream transmission control

​enableSendMediaStream

​Video frame callbacks

​setVideoFrameObserver

​enableVideoFrameObserver

​Real-time messages

​sendDataMsg

​AoqClientListener callbacks

​onError

​onWarning

​onConnectionStatusChange

​onStats

​onAudioDeviceStateChanged

API index

Engine lifecycle

Audio device management

Audio encoding configuration

Audio file playback

External audio streams

Audio frame callbacks

Local audio volume indication

Video device management

Video encoding and external input

Screen capture

Media stream transmission control

Video frame callbacks

Real-time messages

AoqClientListener callbacks

AoqAudioFrameListener callbacks

AoqVideoFrameListener callbacks

API details

Engine lifecycle

Audio device management

startAudioCapture

stopAudioCapture

muteAudioCapture

startAudioPlayer

stopAudioPlayer

pauseAudioPlayer

resumeAudioPlayer

interruptAudioPlayer

enableSpeakerphone

isSpeakerphoneEnabled

Audio encoding configuration

setAudioEncoderConfig

setAudioDecoderConfig

Audio file playback

startAudioFile

stopAudioFile

pauseAudioFile

resumeAudioFile

getAudioFileDuration

getAudioFileCurrentPosition

setAudioFilePositionMillis

setAudioFileVolume

getAudioFileVolume

External audio streams

addAudioExternalStream

pushAudioExternalStreamData

setAudioExternalStreamVolume

getAudioExternalStreamVolume

clearAudioExternalStreamBuffer

removeAudioExternalStream

Audio frame callbacks

setAudioFrameObserver

enableAudioFrameObserver

Local audio volume indication

enableLocalAudioVolumeIndication

Video device management

startVideoCapture

stopVideoCapture

switchCamera

setLocalView

setRemoteView

Video encoding and external input

setVideoEncoderConfig

setVideoDecoderConfig

pushExternalVideoCapturedFrame

pushExternalVideoEncodedFrame

Screen capture

Media stream transmission control

enableSendMediaStream

Video frame callbacks

setVideoFrameObserver

enableVideoFrameObserver

Real-time messages

sendDataMsg

AoqClientListener callbacks

onError

onWarning

onConnectionStatusChange

onStats

onAudioDeviceStateChanged