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# SetShapeXmaInputBufferReadOffset

> SetShapeXmaInputBufferReadOffset

# SetShapeXmaInputBufferReadOffset

Sets the read offset of the current input buffer.

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## Syntax

```cpp theme={null}
HRESULT SetShapeXmaInputBufferReadOffset(  
         SHAPE_XMA_CONTEXT* context,  
         UINT32 offsetInBits  
)  
```

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### Parameters

*context*   \_Inout\_\
Type: [SHAPE\_XMA\_CONTEXT](/reference/audio/shapexmacontext/structs/shape_xma_context)\*

Pointer to a [SHAPE\_XMA\_CONTEXT](/reference/audio/shapexmacontext/structs/shape_xma_context) object.

*offsetInBits*   \
Type: UINT32

The offset, in bits, from the beginning of the input buffer.

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### Return value

Type: HRESULT

HRESULT success or error code.

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## Remarks

For the hardware XMA decoder, the read offset for XMA contexts should normally be initialized to 32, or 32 plus some multiple of 2048 bytes.
To get the current input buffer, use [GetShapeXmaCurrentInputBuffer](/reference/audio/shapexmacontext/functions/getshapexmacurrentinputbuffer).

To get the read offset of the current input buffer, use [GetShapeXmaInputBufferReadOffset](/reference/audio/shapexmacontext/functions/getshapexmainputbufferreadoffset).

For more information, see the [XMA](/build/console-features/audio/overviews/shape-overview#ID4EYD) section of [Overview of SHAPE](/build/console-features/audio/overviews/shape-overview).

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## Requirements

**Header:** shapexmacontext.h

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

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## See also

[ShapeXmaContext](/reference/audio/shapexmacontext/shapexmacontext_members)


## Related topics

- [SetShapeXmaOutputBufferReadOffset](/reference/audio/shapexmacontext/functions/setshapexmaoutputbufferreadoffset.md)
- [GetShapeXmaInputBufferReadOffset](/reference/audio/shapexmacontext/functions/getshapexmainputbufferreadoffset.md)
- [ShapeXmaContext](/reference/audio/shapexmacontext/shapexmacontext_members.md)
- [GetShapeXmaOutputBufferReadOffset](/reference/audio/shapexmacontext/functions/getshapexmaoutputbufferreadoffset.md)
- [SetShapeXmaCurrentInputBuffer](/reference/audio/shapexmacontext/functions/setshapexmacurrentinputbuffer.md)