Provides robot system audio service controller. Through the AudioController, you can control robot audio and obtain status via RPC methods.

Interface Definition

AudioController is a Python class that encapsulates audio control functionality, mainly used for audio playback control, TTS playback, volume setting and query, etc.

AudioController

Item	Content
Class Name	AudioController
Constructor	controller = AudioController()
Function Overview	Initialize audio controller object, construct internal state, allocate resources, etc.
Notes	Constructs internal state.

initialize

Item	Content
Function Name	initialize
Function Declaration	bool initialize()
Function Overview	Initialize audio control module, prepare playback resources and devices.
Return Value	True indicates success, False indicates failure.
Notes	Used in conjunction with shutdown().

shutdown

Item	Content
Function Name	shutdown
Function Declaration	void shutdown()
Function Overview	Shutdown audio controller and release resources.
Notes	Ensure to call before destruction.

play

Item	Content
Function Name	play
Function Declaration	Status play(TtsCommand cmd)
Function Overview	Play TTS (Text-to-Speech) audio command.
Parameter Description	cmd: TTS command, containing text, speech rate, tone, etc.
Return Value	Status object, Status.code == ErrorCode.OK indicates success.
Notes	Blocking interface, ensure module is initialized before calling.

stop

Item	Content
Function Name	stop
Function Declaration	Status stop()
Function Overview	Stop current audio playback.
Return Value	Status object, Status.code == ErrorCode.OK indicates success.
Notes	Blocking interface, usually used to interrupt current speech.

set_volume

Item	Content
Function Name	set_volume
Function Declaration	Status set_volume(int volume)
Function Overview	Set audio output volume.
Parameter Description	volume: Volume value, usually in range 0~100.
Return Value	Status object, Status.code == ErrorCode.OK indicates success.
Notes	Blocking interface, takes effect immediately after setting.

get_volume

Item	Content
Function Name	get_volume
Function Declaration	tuple[Status, int] get_volume()
Function Overview	Get current audio output volume.
Return Value	Returns tuple (Status, volume), Status.code == ErrorCode.OK indicates success.
Notes	Blocking interface, return value needs to be checked before using volume.

open_audio_stream

Item	Content
Function Name	open_audio_stream
Function Declaration	Status open_audio_stream()
Function Overview	Open audio stream, prepare for audio playback.
Return Value	Status object, Status.code == ErrorCode.OK indicates success.
Notes	Blocking interface, return value needs to be checked for successful execution

close_audio_stream

Item	Content
Function Name	close_audio_stream
Function Declaration	Status close_audio_stream()
Function Overview	Close audio stream.
Return Value	Status object, Status.code == ErrorCode.OK indicates success.
Notes	Blocking interface, return value needs to be checked for successful execution

subscribe_origin_audio_stream

Item	Content
Function Name	subscribe_origin_audio_stream
Function Declaration	void subscribe_origin_audio_stream(callback)
Function Overview	Subscribe to original audio stream data.
Parameter Description	callback: Data processing function after receiving data, signature is callback(data: AudioStream) -> None
Notes	Non-blocking interface.

subscribe_bf_audio_stream

Item	Content
Function Name	subscribe_bf_audio_stream
Function Declaration	void subscribe_bf_audio_stream(callback)
Function Overview	Subscribe to BF audio stream data.
Parameter Description	callback: Data processing function after receiving data, signature is callback(data: AudioStream) -> None
Notes	Non-blocking interface.

Type Definitions

TtsPriority — TTS Playback Priority Level

Used to control interrupt behavior between different TTS tasks. Higher priority tasks will interrupt playback of current lower priority tasks.

Enumeration Value	Description
TtsPriority.HIGH	Highest priority, e.g.: low battery warning, emergency alert
TtsPriority.MIDDLE	Medium priority, e.g.: system prompts, status announcements
TtsPriority.LOW	Lowest priority, e.g.: daily voice conversation, background announcements

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TtsMode — Task Scheduling Strategy Under Same Priority

Used to refine control of playback order and clearing logic for multiple TTS tasks under the same priority condition.

Enumeration Value	Description
TtsMode.CLEARTOP	Clear all tasks of current priority (including currently playing and waiting queue), immediately play this request
TtsMode.ADD	Append this request to the end of current priority queue, play in order (without interrupting current playback)
TtsMode.CLEARBUFFER	Clear unplayed requests in queue, keep current playback, then play this request

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Structure Definitions

TtsCommand — TTS Playback Command Structure

Describes complete information for a TTS playback request, supporting setting unique identifier, text content, priority control, and scheduling mode under same priority.

Field Name	Type	Description
id	str	TTS task unique ID, e.g. "id_01", used to track playback status
content	str	Text content to be played, e.g. "Hello, welcome to the intelligent voice system."
priority	TtsPriority	Playback priority, controls whether to interrupt currently playing low-priority speech
mode	TtsMode	Scheduling strategy under same priority, controls whether tasks are appended, overridden, etc.

AudioStream - Audio Stream Structure

Describes raw audio stream or BF audio stream data.

Field Name	Type	Description
data_length	int	Data length
raw_data	bytes	Audio stream data