native_audiostream_base.h

Overview

The file declares the basic data structure of OHAudio.

File to include: <ohaudio/native_audiostream_base.h>

Library: libohaudio.so

System capability: SystemCapability.Multimedia.Audio.Core

Since: 10

Related module: OHAudio

Summary

Structs

Name	typedef Keyword	Description
OH_AudioStreamInfo	OH_AudioStreamInfo	Describes the audio stream information, which is used to describe the basic audio format.
OH_AudioRenderer_Callbacks_Struct	OH_AudioRenderer_Callbacks	Describes a pointer to the callbacks related to an audio renderer. (It is deprecated in API version 20.)
OH_AudioCapturer_Callbacks_Struct	OH_AudioCapturer_Callbacks	Describes a pointer to the callbacks related to an audio capturer. To avoid unexpected behavior, ensure that every member variable of the struct is initialized by a custom callback method or a null pointer when setting the audio callback functions. (It is deprecated in API version 20.)
OH_AudioStreamBuilderStruct	OH_AudioStreamBuilder	Defines a struct for an audio stream builder. An audio stream builder instance is often used to create an audio stream and set its attributes.
OH_AudioRendererStruct	OH_AudioRenderer	Describes an audio renderer, which is used to render audio data.
OH_AudioCapturerStruct	OH_AudioCapturer	Describes an audio capturer, which is used to capture audio data.

Enums

Name	typedef Keyword	Description
OH_AudioStream_Result	OH_AudioStream_Result	Enumerates the audio operation results.
OH_AudioStream_Type	OH_AudioStream_Type	Enumerates the audio stream types.
OH_AudioStream_SampleFormat	OH_AudioStream_SampleFormat	Enumerates the sampling formats of audio streams.
OH_AudioStream_EncodingType	OH_AudioStream_EncodingType	Enumerates the encoding types of audio streams.
OH_AudioStream_Usage	OH_AudioStream_Usage	Enumerates the usage scenarios of audio streams. Generally, it is used to describe usage scenarios of audio output streams.
OH_AudioStream_LatencyMode	OH_AudioStream_LatencyMode	Enumerates the latency modes of audio streams.
OH_AudioStream_DirectPlaybackMode	OH_AudioStream_DirectPlaybackMode	Enumerates the direct playback modes of audio streams.
OH_AudioStream_VolumeMode	OH_AudioStream_VolumeMode	Enumerates the volume modes of audio streams.
OH_AudioStream_State	OH_AudioStream_State	Enumerates the audio stream states.
OH_AudioStream_SourceType	OH_AudioStream_SourceType	Enumerates the usage scenarios of audio streams. Generally, it is used to describe usage scenarios of audio input streams.
OH_AudioStream_Event	OH_AudioStream_Event	Enumerates the audio stream events. (It is deprecated in API version 20.)
OH_AudioInterrupt_ForceType	OH_AudioInterrupt_ForceType	Enumerates the types of force that causes audio interruption. The force type is obtained when an audio interruption event is received. This type indicates whether the audio interruption operation is forcibly performed by the system. For details about the operation (such as audio pause and stop), see OH_AudioInterrupt_Hint.
OH_AudioInterrupt_Hint	OH_AudioInterrupt_Hint	Enumerates the hints provided along with audio interruption. The force type is obtained when an audio interruption event is received. The hint specifies the operation (such as audio pause or volume adjustment) to be performed on audio streams based on the focus strategy. You can combine the OH_AudioInterrupt_ForceType information to determine whether the operation has been forcibly performed by the system.
OH_AudioInterrupt_Mode	OH_AudioInterrupt_Mode	Enumerates the audio interruption modes.
OH_AudioStream_AudioEffectMode	OH_AudioStream_AudioEffectMode	Enumerates the audio effect modes.
OH_AudioStream_FastStatus	OH_AudioStream_FastStatus	Enumerates the low-latency statuses.
OH_AudioStream_DeviceChangeReason	OH_AudioStream_DeviceChangeReason	Enumerates the reasons for audio stream device changes.
OH_AudioStream_PrivacyType	OH_AudioStream_PrivacyType	Enumerates the privacy types of an audio stream. The privacy type specifies whether the audio stream can be recorded by other applications.
OH_AudioData_Callback_Result	OH_AudioData_Callback_Result	Enumerates the audio data callback results.
OH_AudioStream_LatencyType	OH_AudioStream_LatencyType	Enumerates the audio latency types.
OH_AudioStream_PlaybackCaptureMode	OH_AudioStream_PlaybackCaptureMode	Enumerates the filter types for internal audio recording (capturing sound from the applications on the device). Each filter type corresponds to a type of playback stream. This API is currently not available for public use.
OH_AudioStream_PlaybackCaptureStartState	OH_AudioStream_PlaybackCaptureStartState	Enumerates the internal audio recording start statuses, which will be returned asynchronously after the OH_AudioCapturer_RequestPlaybackCaptureStart function is called. This API is currently not available for public use.

Functions

Name	typedef Keyword	Description
typedef void (OH_AudioRenderer_OutputDeviceChangeCallback)(OH_AudioRenderer renderer, void* userData, OH_AudioStream_DeviceChangeReason reason)	OH_AudioRenderer_OutputDeviceChangeCallback	Defines a pointer to the callback invoked when the audio capturer device changes.
typedef void (OH_AudioRenderer_OnMarkReachedCallback)(OH_AudioRenderer renderer, uint32_t samplePos, void* userData)	OH_AudioRenderer_OnMarkReachedCallback	Defines a pointer to the callback invoked when the mark position is reached.
typedef int32_t (OH_AudioRenderer_WriteDataWithMetadataCallback)(OH_AudioRenderer renderer, void* userData, void* audioData, int32_t audioDataSize, void* metadata, int32_t metadataSize)	OH_AudioRenderer_WriteDataWithMetadataCallback	Defines a function pointer to the callback used to write audio data and metadata.
typedef OH_AudioData_Callback_Result (OH_AudioRenderer_OnWriteDataCallback)(OH_AudioRenderer renderer, void* userData, void* audioData, int32_t audioDataSize)	OH_AudioRenderer_OnWriteDataCallback	Defines a function pointer to the callback used to write audio data. The callback is used only to write audio data. Do not call AudioRenderer APIs in it. The return result indicates whether the data filled in the buffer is valid. If the data is invalid, the data entered by the user will not be played. Once the callback finishes its execution, the audio service queues the data pointed to by audioData for playback. Therefore, do not change the data outside the callback. It is crucial to fill audioData with the exact length (specified by audioDataSize) of data designated for playback; otherwise, noises may occur during playback. The audioDataSize parameter can be set by calling OH_AudioStreamBuilder_SetFrameSizeInCallback.

Enum Description

OH_AudioStream_Result

enum OH_AudioStream_Result

Description

Enumerates the audio operation results.

Since: 10

Enum Item	Description
AUDIOSTREAM_SUCCESS = 0	Operation successful.
AUDIOSTREAM_ERROR_INVALID_PARAM = 1	Invalid input parameter.
AUDIOSTREAM_ERROR_ILLEGAL_STATE = 2	Invalid state.
AUDIOSTREAM_ERROR_SYSTEM = 3	System error.
AUDIOSTREAM_ERROR_UNSUPPORTED_FORMAT = 4	Unsupported audio format, such as unsupported encoding type or sampling format. Since: 19

OH_AudioStream_Type

enum OH_AudioStream_Type

Description

Enumerates the audio stream types.

Since: 10

Enum Item	Description
AUDIOSTREAM_TYPE_RENDERER = 1	The audio stream is an output stream.
AUDIOSTREAM_TYPE_CAPTURER = 2	The audio stream is an input stream.

OH_AudioStream_SampleFormat

enum OH_AudioStream_SampleFormat

Description

Enumerates the sampling formats of audio streams.

Since: 10

Enum Item	Description
AUDIOSTREAM_SAMPLE_U8 = 0	Unsigned 8-bit.
AUDIOSTREAM_SAMPLE_S16LE = 1	Short 16-bit little-endian.
AUDIOSTREAM_SAMPLE_S24LE = 2	Short 24-bit little-endian.
AUDIOSTREAM_SAMPLE_S32LE = 3	Short 32-bit little-endian.
AUDIOSTREAM_SAMPLE_F32LE = 4	Float 32-bit little-endian. Since: 17

OH_AudioStream_EncodingType

enum OH_AudioStream_EncodingType

Description

Enumerates the encoding types of audio streams.

Since: 10

Enum Item	Description
AUDIOSTREAM_ENCODING_TYPE_RAW = 0	PCM encoding.
AUDIOSTREAM_ENCODING_TYPE_AUDIOVIVID = 1	Audio Vivid encoding. Since: 12
AUDIOSTREAM_ENCODING_TYPE_E_AC3 = 2	E_AC3 encoding. Since: 19

OH_AudioStream_Usage

enum OH_AudioStream_Usage

Description

Enumerates the usage scenarios of audio streams.
that is, usage scenarios of audio output streams.

Since: 10

Enum Item	Description
AUDIOSTREAM_USAGE_UNKNOWN = 0	Unknown content.
AUDIOSTREAM_USAGE_MUSIC = 1	Music.
AUDIOSTREAM_USAGE_VOICE_COMMUNICATION = 2	VoIP voice call.
AUDIOSTREAM_USAGE_VOICE_ASSISTANT = 3	Voice assistant.
AUDIOSTREAM_USAGE_ALARM = 4	Alarming.
AUDIOSTREAM_USAGE_VOICE_MESSAGE = 5	Voice message.
AUDIOSTREAM_USAGE_RINGTONE = 6	Ringtone.
AUDIOSTREAM_USAGE_NOTIFICATION = 7	Notification.
AUDIOSTREAM_USAGE_ACCESSIBILITY = 8	Accessibility.
AUDIOSTREAM_USAGE_MOVIE = 10	Movie or video.
AUDIOSTREAM_USAGE_GAME = 11	Gaming.
AUDIOSTREAM_USAGE_AUDIOBOOK = 12	Audiobooks (including crosstalks and storytelling), news radio, and podcasts.
AUDIOSTREAM_USAGE_NAVIGATION = 13	Navigation.
AUDIOSTREAM_USAGE_VIDEO_COMMUNICATION = 17	VoIP video call. Since: 12

OH_AudioStream_LatencyMode

enum OH_AudioStream_LatencyMode

Description

Enumerates the latency modes of audio streams.

Since: 10

Enum Item	Description
AUDIOSTREAM_LATENCY_MODE_NORMAL = 0	Normal latency mode.
AUDIOSTREAM_LATENCY_MODE_FAST = 1	Low latency mode.

OH_AudioStream_DirectPlaybackMode

enum OH_AudioStream_DirectPlaybackMode

Description

Enumerates the direct playback modes of audio streams.

Since: 19

Enum Item	Description
AUDIOSTREAM_DIRECT_PLAYBACK_NOT_SUPPORTED = 0	Direct playback is not supported.
AUDIOSTREAM_DIRECT_PLAYBACK_BITSTREAM_SUPPORTED = 1	Direct playback of bit streams (without decoding) is supported.
AUDIOSTREAM_DIRECT_PLAYBACK_PCM_SUPPORTED = 2	Direct playback of PCM-encoded audio is supported.

OH_AudioStream_VolumeMode

enum OH_AudioStream_VolumeMode

Description

Enumerates the volume modes of audio streams.

Since: 19

Enum Item	Description
AUDIOSTREAM_VOLUMEMODE_SYSTEM_GLOBAL = 0	System-level volume (default mode).
AUDIOSTREAM_VOLUMEMODE_APP_INDIVIDUAL = 1	Application-level volume. In this mode, you can set and query the application volume through the provided functions.

OH_AudioStream_State

enum OH_AudioStream_State

Description

Enumerates the audio stream states.

Since: 10

Enum Item	Description
AUDIOSTREAM_STATE_INVALID = -1	Invalid state.
AUDIOSTREAM_STATE_NEW = 0	Newly created.
AUDIOSTREAM_STATE_PREPARED = 1	Prepared.
AUDIOSTREAM_STATE_RUNNING = 2	Running.
AUDIOSTREAM_STATE_STOPPED = 3	Stopped.
AUDIOSTREAM_STATE_RELEASED = 4	Released.
AUDIOSTREAM_STATE_PAUSED = 5	Paused.

OH_AudioStream_SourceType

enum OH_AudioStream_SourceType

Description

Enumerates the usage scenarios of audio streams,
that is, usage scenarios of audio input streams.

Since: 10

Enum Item	Description
AUDIOSTREAM_SOURCE_TYPE_INVALID = -1	Invalid state.
AUDIOSTREAM_SOURCE_TYPE_MIC = 0	Audio recording.
AUDIOSTREAM_SOURCE_TYPE_VOICE_RECOGNITION = 1	Voice recognition.
AUDIOSTREAM_SOURCE_TYPE_PLAYBACK_CAPTURE = 2	Audio playback. Deprecated from: 12 Substitute: OH_AVScreenCapture
AUDIOSTREAM_SOURCE_TYPE_VOICE_COMMUNICATION = 7	Voice communication.
AUDIOSTREAM_SOURCE_TYPE_VOICE_MESSAGE = 10	Voice message. Since: 12
AUDIOSTREAM_SOURCE_TYPE_CAMCORDER = 13	Video recording. Since: 13
AUDIOSTREAM_SOURCE_TYPE_UNPROCESSED = 14	Raw microphone recording, where the system does not perform any algorithm processing. Since: 14
AUDIOSTREAM_SOURCE_TYPE_LIVE = 17	Live. Since: 20

OH_AudioStream_Event

enum OH_AudioStream_Event

Description

Enumerates the audio stream events.

Since: 10

Deprecated from: 20

Substitute: OH_AudioRenderer_OutputDeviceChangeCallback

Enum Item	Description
AUDIOSTREAM_EVENT_ROUTING_CHANGED = 0	The audio route has been changed.

OH_AudioInterrupt_ForceType

enum OH_AudioInterrupt_ForceType

Description

Enumerates the types of force that causes audio interruption.
The force type is obtained when an audio interruption event is received.
This type indicates whether the audio interruption operation is forcibly performed by the system. For details about the operation (such as audio pause and stop), see OH_AudioInterrupt_Hint.

Since: 10

Enum Item	Description
AUDIOSTREAM_INTERRUPT_FORCE = 0	The operation is forcibly performed by the system.
AUDIOSTREAM_INTERRUPT_SHARE = 1	The system does not perform the specific operation. Instead, it notifies the application of the interruption through OH_AudioInterrupt_Hint and provides suggestions for the application to decide the next step.

OH_AudioInterrupt_Hint

enum OH_AudioInterrupt_Hint

Description

Enumerates the hints provided along with audio interruption.
The force type is obtained when an audio interruption event is received.
The hint specifies the operation (such as audio pause or volume adjustment) to be performed on audio streams based on the focus strategy.
You can combine the OH_AudioInterrupt_ForceType information to determine whether the operation has been forcibly performed by the system.

Since: 10

Enum Item	Description
AUDIOSTREAM_INTERRUPT_HINT_NONE = 0	None.
AUDIOSTREAM_INTERRUPT_HINT_RESUME = 1	A hint is displayed, indicating that the audio stream is restored. The application can proactively trigger operations related to rendering or recording. This operation cannot be forcibly performed by the system. The corresponding OH_AudioInterrupt_ForceType must be AUDIOSTREAM_INTERRUPT_SHARE.
AUDIOSTREAM_INTERRUPT_HINT_PAUSE = 2	A hint is displayed, indicating that the audio stream is paused and the audio focus is lost temporarily. The AUDIOSTREAM_INTERRUPT_HINT_RESUME event will be triggered when the focus is gained.
AUDIOSTREAM_INTERRUPT_HINT_STOP = 3	A hint is displayed, indicating that the audio stream stops and the audio focus is lost.
AUDIOSTREAM_INTERRUPT_HINT_DUCK = 4	A hint is displayed, indicating that audio ducking starts and the audio is played at a lower volume.
AUDIOSTREAM_INTERRUPT_HINT_UNDUCK = 5	A hint is displayed, indicating that audio ducking ends and the audio is played at the normal volume.
AUDIOSTREAM_INTERRUPT_HINT_MUTE = 6	A hint is displayed, indicating that the audio is muted. Since: 20
AUDIOSTREAM_INTERRUPT_HINT_UNMUTE = 7	A hint is displayed, indicating that the audio is unmuted. Since: 20

OH_AudioInterrupt_Mode

enum OH_AudioInterrupt_Mode

Description

Enumerates the audio interruption modes.

Since: 12

Enum Item	Description
AUDIOSTREAM_INTERRUPT_MODE_SHARE = 0	Shared mode.
AUDIOSTREAM_INTERRUPT_MODE_INDEPENDENT = 1	Independent mode.

OH_AudioStream_AudioEffectMode

enum OH_AudioStream_AudioEffectMode

Description

Enumerates the audio effect modes.

Since: 12

Enum Item	Description
EFFECT_NONE = 0	No audio effect used.
EFFECT_DEFAULT = 1	Default audio effect mode.

OH_AudioStream_FastStatus

enum OH_AudioStream_FastStatus

Description

Enumerates the low-latency statuses.

Since: 20

Enum Item	Description
AUDIOSTREAM_FASTSTATUS_NORMAL = 0	Normal audio stream status.
AUDIOSTREAM_FASTSTATUS_FAST = 1	Low-latency audio stream status.

OH_AudioStream_DeviceChangeReason

enum OH_AudioStream_DeviceChangeReason

Description

Enumerates the reasons for audio stream device changes.

Since: 11

Enum Item	Description
REASON_UNKNOWN = 0	Unknown reason.
REASON_NEW_DEVICE_AVAILABLE = 1	A new device is available.
REASON_OLD_DEVICE_UNAVAILABLE = 2	The old device is unavailable. When this reason is reported, the application should consider pausing audio playback.
REASON_OVERRODE = 3	The user or system forcibly changes the device.
REASON_SESSION_ACTIVATED = 4	The audio session has been activated. Since: 20
REASON_STREAM_PRIORITY_CHANGED = 5	An audio stream with higher priority appears. Since: 20

OH_AudioStream_PrivacyType

enum OH_AudioStream_PrivacyType

Description

Enumerates the privacy types of an audio stream. The privacy type specifies whether the audio stream can be recorded by other applications.

Since: 12

Enum Item	Description
AUDIO_STREAM_PRIVACY_TYPE_PUBLIC = 0	The audio stream can be recorded or screen-projected by other applications and is not privacy-related.
AUDIO_STREAM_PRIVACY_TYPE_PRIVATE = 1	The audio stream cannot be recorded or screen-projected by other applications.
AUDIO_STREAM_PRIVACY_TYPE_SHARED = 2	The audio stream can be recorded or screen-projected by other applications and is privacy-related. For example, if the privacy policy is PRIVACY_TYPE_PUBLIC, the AUDIOSTREAM_USAGE_VOICE_COMMUNICATION audio stream cannot be recorded or screen-projected by other applications. However, if the privacy policy is PRIVACY_TYPE_SHARED, these audio streams can be recorded or screen-projected by other applications. Since: 21

OH_AudioData_Callback_Result

enum OH_AudioData_Callback_Result

Description

Enumerates the audio data callback results.

Since: 12

Enum Item	Description
AUDIO_DATA_CALLBACK_RESULT_INVALID = -1	The audio data callback result is invalid, and the audio data will not be played.
AUDIO_DATA_CALLBACK_RESULT_VALID = 0	The audio data callback result is valid, and the audio data will be played.

OH_AudioStream_LatencyType

enum OH_AudioStream_LatencyType

Description

Enumerates the audio latency types.

Since: 23

Enum Item	Description
AUDIOSTREAM_LATENCY_TYPE_ALL = 0	Obtains the overall audio processing latency for both software and hardware components.
AUDIOSTREAM_LATENCY_TYPE_SOFTWARE = 1	Obtains the software latency, including latency for sound effect processing on the software side.
AUDIOSTREAM_LATENCY_TYPE_HARDWARE = 2	Obtains the hardware latency, including latency for sound effect processing on the hardware abstraction layer (HAL), driver, and hardware side.

OH_AudioStream_PlaybackCaptureMode

enum OH_AudioStream_PlaybackCaptureMode

Description

Enumerates the filter types for internal audio recording (capturing sound from the applications on the device). Each filter type corresponds to a type of playback stream. This API is currently not available for public use.

Since: 23

Enum Item	Description
AUDIOSTREAM_PLAYBACKCAPTURE_MODE_DEFAULT = 0x0	Default mode. Most audio streams are recorded, excluding the prompt streams and privacy streams. Since: 23
AUDIOSTREAM_PLAYBACKCAPTURE_MODE_MEDIA = 0x1	Media mode. Media, voice messages, and unknown streams are retrieved. Since: 23
AUDIOSTREAM_PLAYBACKCAPTURE_MODE_EXCLUDING_SELF = 0x8000	Self-exclusion mode. All audio streams except for those played by the application itself are retrieved. Since: 23

OH_AudioStream_PlaybackCaptureStartState

enum OH_AudioStream_PlaybackCaptureStartState

Description

Enumerates the internal audio recording start statuses, which will be returned asynchronously after the OH_AudioCapturer_RequestPlaybackCaptureStart function is called. This API is currently not available for public use.

Since: 23

Enum Item	Description
AUDIOSTREAM_PLAYBACKCAPTURE_START_STATE_SUCCESS = 0	Internal audio recording is started successfully. Since: 23
AUDIOSTREAM_PLAYBACKCAPTURE_START_STATE_FAILED = 1	Internal audio recording fails to be started. The focus request (prioritized by stream type) is interrupted or an internal system error occurs. Since: 23
AUDIOSTREAM_PLAYBACKCAPTURE_START_STATE_NOT_AUTHORIZED = 2	Internal audio recording fails to be started due to lack of user authorization. Since: 23

Function Description

OH_AudioRenderer_OutputDeviceChangeCallback()

typedef void (*OH_AudioRenderer_OutputDeviceChangeCallback)(OH_AudioRenderer* renderer, void* userData, OH_AudioStream_DeviceChangeReason reason)

Description

Defines a pointer to the callback invoked when the audio capturer device changes.

Since: 11

Parameters

Name	Description
OH_AudioRenderer* renderer	Pointer to an audio renderer instance, which is created by calling OH_AudioStreamBuilder_GenerateRenderer.
void* userData	Pointer to the application data passed through the callback.
OH_AudioStream_DeviceChangeReason reason	Enumerates the reasons for audio stream device changes.

OH_AudioRenderer_OnMarkReachedCallback()

typedef void (*OH_AudioRenderer_OnMarkReachedCallback)(OH_AudioRenderer* renderer, uint32_t samplePos, void* userData)

Description

Defines a pointer to the callback invoked when the mark position is reached.

Since: 12

Parameters

Name	Description
OH_AudioRenderer* renderer	Pointer to an audio renderer instance, which is created by calling OH_AudioStreamBuilder_GenerateRenderer.
uint32_t samplePos	Mark position.
void* userData	Pointer to the application data passed through the callback.

OH_AudioRenderer_WriteDataWithMetadataCallback()

typedef int32_t (*OH_AudioRenderer_WriteDataWithMetadataCallback)(OH_AudioRenderer* renderer, void* userData, void* audioData, int32_t audioDataSize, void* metadata, int32_t metadataSize)

Description

Defines a function pointer to the callback used to write audio data and metadata.

Since: 12

Parameters

Name	Description
OH_AudioRenderer* renderer	Pointer to an audio renderer instance, which is created by calling OH_AudioStreamBuilder_GenerateRenderer.
void* userData	Pointer to the application data passed through the callback.
void* audioData	Pointer to the audio data written by the user.
int32_t audioDataSize	Length of the audio data, in bytes.
void* metadata	Pointer to the metadata written by the user.
int32_t metadataSize	Length of the metadata, in bytes.

Returns

Type	Description
int32_t	Error code of the callback.

OH_AudioRenderer_OnWriteDataCallback()

typedef OH_AudioData_Callback_Result (*OH_AudioRenderer_OnWriteDataCallback)(OH_AudioRenderer* renderer, void* userData, void* audioData, int32_t audioDataSize)

Description

Defines a function pointer to the callback used to write audio data.
The callback is used only to write audio data. Do not call AudioRenderer APIs in it.
The return result indicates whether the data filled in the buffer is valid. If the data is invalid, the data entered by the user will not be played.
Once the callback finishes its execution, the audio service queues the data pointed to by audioData for playback. Therefore, do not change the data outside the callback. It is crucial to fill audioData with the exact length (specified by audioDataSize) of data designated for playback; otherwise, noises may occur during playback.
The audioDataSize parameter can be set by calling OH_AudioStreamBuilder_SetFrameSizeInCallback.

Since: 12

Parameters

Name	Description
OH_AudioRenderer* renderer	Pointer to an audio renderer instance, which is created by calling OH_AudioStreamBuilder_GenerateRenderer.
void* userData	Pointer to the application data passed through the callback.
void* audioData	Pointer to the audio data written by the user.
int32_t audioDataSize	Length of the audio data, in bytes.

Returns

Type	Description
OH_AudioData_Callback_Result	AUDIO_DATA_CALLBACK_RESULT_INVALID: The audio data callback result is invalid, and the audio data will not be played. AUDIO_DATA_CALLBACK_RESULT_VALID: The audio data callback result is valid, and the audio data will be played.