---
title: SendOutputBufferNotification
framework: VideoDriverKit
role: symbol
role_heading: Instance Method
platforms: [driverkit 27.0+]
path: videodriverkit/iouservideostream/sendoutputbuffernotification
---

# SendOutputBufferNotification

Sends a notification to the host that data is available for reading on the output queue.

## Declaration

```occ
kern_return_t SendOutputBufferNotification();
```

## Return Value

Return Value kIOReturnSuccess if the notification was successfully sent.

## Discussion

Discussion This will result in the user’s output handler being called, if they registered one.

## See Also

### Working with video buffers

- [GetBufferCount](videodriverkit/iouservideostream/getbuffercount.md)
- [GetBufferList](videodriverkit/iouservideostream/getbufferlist.md)
- [GetBufferWithID](videodriverkit/iouservideostream/getbufferwithid.md)
- [addBuffer](videodriverkit/iouservideostream/addbuffer.md)
- [addBuffers](videodriverkit/iouservideostream/addbuffers.md)
- [enqueueOutputBuffer](videodriverkit/iouservideostream/enqueueoutputbuffer.md)
- [IOUserVideoBuffer](videodriverkit/iouservideobuffer.md)
- [removeAllBuffers](videodriverkit/iouservideostream/removeallbuffers.md)