1# MetadataOutput_Callbacks
2
3
4## Overview
5
6The MetadataOutput_Callbacks struct describes the callbacks related to metadata output.
7
8For details, see [OH_MetadataOutput_RegisterCallback](_o_h___camera.md#oh_metadataoutput_registercallback).
9
10**Since**: 11
11
12**Related module**: [OH_Camera](_o_h___camera.md)
13
14
15## Summary
16
17
18### Member Variables
19
20| Name| Description|
21| -------- | -------- |
22| [OH_MetadataOutput_OnMetadataObjectAvailable](_o_h___camera.md#oh_metadataoutput_onmetadataobjectavailable) [onMetadataObjectAvailable](#onmetadataobjectavailable) | Callback to report the metadata output result.|
23| [OH_MetadataOutput_OnError](_o_h___camera.md#oh_metadataoutput_onerror) [onError](#onerror) | Callback to report a metadata output error.|
24
25
26## Member Variable Description
27
28
29### onError
30
31```
32OH_MetadataOutput_OnError MetadataOutput_Callbacks::onError
33```
34
35**Description**
36
37Callback to report a metadata output error.
38
39
40### onMetadataObjectAvailable
41
42```
43OH_MetadataOutput_OnMetadataObjectAvailable MetadataOutput_Callbacks::onMetadataObjectAvailable
44```
45
46**Description**
47
48Callback to report the metadata output result.
49