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##

# 3.3.4.30 USB_HOST_AUDIO_V1_StreamingInterfaceGetFirst Function

## C

    USB_HOST_AUDIO_V1_RESULT USB_HOST_AUDIO_V1_StreamingInterfaceGetFirst(
        USB_HOST_AUDIO_V1_OBJ audioObj,
        USB_HOST_AUDIO_V1_STREAMING_INTERFACE_OBJ* streamingInterfaceObj
    );

## Summary

This function will get the first streaming interface object from the attached Audio Device.

## Precondition

The Audio v1.0 Device should have been attached.

## Parameters

Parameters | Description
audioObj | Audio v1.0 client driver object.
streamingInterfaceObj | Pointer to an audio streaming interface object.

## Returns

- USB_HOST_AUDIO_V1_RESULT_SUCCESS - The request completed successfully
- USB_HOST_AUDIO_V1_RESULT_END_OF_STREAMING_INTERFACE - No more streaming interfaces are available
- USB_HOST_AUDIO_V1_RESULT_DEVICE_UNKNOWN - Device is not attached
- USB_HOST_AUDIO_V1_RESULT_OBJ_INVALID - Audio Device object is invalid
- USB_HOST_AUDIO_V1_RESULT_FAILURE - An error has occurred

## Remarks

None.