AudioAttribute

Overview

Related Modules:

Audio

Description:

Provides attribute-related APIs for audio rendering or capturing, including functions to obtain frame information and set audio sampling attributes.

Since:

1.0

Version:

1.0

Summary

Data Fields

Variable Name Description
GetFrameSize )(AudioHandle handle, uint64_t size) int32_t( Obtains the audio frame size, that is, the length (in bytes) of a frame.
GetFrameCount )(AudioHandle handle, uint64_t count) int32_t( Obtains the number of audio frames in the audio buffer.
SetSampleAttributes )(AudioHandle handle, const struct AudioSampleAttributes attrs) int32_t( Sets audio sampling attributes.
GetSampleAttributes )(AudioHandle handle, struct AudioSampleAttributes attrs) int32_t( Obtains audio sampling attributes.
GetCurrentChannelId )(AudioHandle handle, uint32_t channelId) int32_t( Obtains the data channel ID of the audio.

Details

Field Documentation

GetCurrentChannelId


1. int32_t(* AudioAttribute::GetCurrentChannelId) ([AudioHandle]($api-api-SmartVision-Devices-Audio.md#ga18675ddb073465fdeac33a897f675d79) handle, uint32_t *channelId)

Description:

Obtains the data channel ID of the audio.

Parameters:

Name Description
handle Indicates the audio handle.
channelId Indicates the pointer to the data channel ID.

Returns:

Returns 0 if the data channel ID is obtained; returns a negative value otherwise.

GetFrameCount


1. int32_t(* AudioAttribute::GetFrameCount) ([AudioHandle]($api-api-SmartVision-Devices-Audio.md#ga18675ddb073465fdeac33a897f675d79) handle, uint64_t *count)

Description:

Obtains the number of audio frames in the audio buffer.

Parameters:

Name Description
handle Indicates the audio handle.
count Indicates the pointer to the number of audio frames in the audio buffer.

Returns:

Returns 0 if the number of audio frames is obtained; returns a negative value otherwise.

GetFrameSize


1. int32_t(* AudioAttribute::GetFrameSize) ([AudioHandle]($api-api-SmartVision-Devices-Audio.md#ga18675ddb073465fdeac33a897f675d79) handle, uint64_t *size)

Description:

Obtains the audio frame size, that is, the length (in bytes) of a frame.

Parameters:

Name Description
handle Indicates the audio handle.
size Indicates the pointer to the audio frame size (in bytes).

Returns:

Returns 0 if the audio frame size is obtained; returns a negative value otherwise.

GetSampleAttributes


1. int32_t(* AudioAttribute::GetSampleAttributes) ([AudioHandle]($api-api-SmartVision-Devices-Audio.md#ga18675ddb073465fdeac33a897f675d79) handle, struct [AudioSampleAttributes]($api-api-SmartVision-Devices-AudioSampleAttributes.md) *attrs)

Description:

Obtains audio sampling attributes.

Parameters:

Name Description
handle Indicates the audio handle.
attrs Indicates the pointer to the audio sampling attributes, such as the sampling rate, sampling precision, and channel.

Returns:

Returns 0 if audio sampling attributes are obtained; returns a negative value otherwise.

See also:

SetSampleAttributes

SetSampleAttributes


1. int32_t(* AudioAttribute::SetSampleAttributes) ([AudioHandle]($api-api-SmartVision-Devices-Audio.md#ga18675ddb073465fdeac33a897f675d79) handle, const struct [AudioSampleAttributes]($api-api-SmartVision-Devices-AudioSampleAttributes.md) *attrs)

Description:

Sets audio sampling attributes.

Parameters:

Name Description
handle Indicates the audio handle.
attrs Indicates the pointer to the audio sampling attributes to set, such as the sampling rate, sampling precision, and channel.

Returns:

Returns 0 if the setting is successful; returns a negative value otherwise.

See also:

GetSampleAttributes