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# GetXmaPacketFirstFrameOffsetInBits

> GetXmaPacketFirstFrameOffsetInBits

# GetXmaPacketFirstFrameOffsetInBits

This is a helper function for the `XMA2PACKET` structure that returns the first frame offset.

## Syntax

```cpp theme={null}
DWORD GetXmaPacketFirstFrameOffsetInBits(  
         const BYTE* pPacket  
)  
```

### Parameters

*pPacket*   \_In\_bytecount\_(3)\
Type: BYTE\*

Pointer to the packet.

### Return value

Type: DWORD

The first frame offset, in bits.

## Remarks

`GetXmaPacketFirstFrameOffsetInBits` gets the bit offset of the first frame of the XBOX Media Audio (XMA) packet.

<Note>Bitfields cannot be read directly on little-endian architectures such as the Intel x86, as they are laid out in big-endian form.</Note>

For more information about XMA2, see [Overview of XMA2](/build/console-features/audio/overviews/xma2-overview). For an overview of the audio architecture of XBOX One, see **The sound of the future**: [The audio architecture in XBOX One](/build/console-features/audio/overviews/xbox-one-audio-architecture).

## Requirements

**Header:** xma2defs.h

**Supported platforms:** XBOX One family consoles and XBOX Series consoles

## See also

[xma2defs](/reference/audio/xma2defs/xma2defs_members)


## Related topics

- [XMA2Defs](/reference/audio/xma2defs/xma2defs_members.md)
- [GetXmaFrameLengthInBits](/reference/audio/xma2defs/functions/getxmaframelengthinbits.md)
- [XMA2PACKET](/reference/audio/xma2defs/structs/xma2packet.md)
- [GetXmaFrameBitPosition](/reference/audio/xma2defs/functions/getxmaframebitposition.md)
- [GetLastXmaFrameBitPosition](/reference/audio/xma2defs/functions/getlastxmaframebitposition.md)