1e41f4b71Sopenharmony_ci# MetadataOutput_Callbacks 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## Overview 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ciThe MetadataOutput_Callbacks struct describes the callbacks related to metadata output. 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ciFor details, see [OH_MetadataOutput_RegisterCallback](_o_h___camera.md#oh_metadataoutput_registercallback). 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**Since**: 11 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**Related module**: [OH_Camera](_o_h___camera.md) 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci## Summary 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci### Member Variables 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci| Name| Description| 21e41f4b71Sopenharmony_ci| -------- | -------- | 22e41f4b71Sopenharmony_ci| [OH_MetadataOutput_OnMetadataObjectAvailable](_o_h___camera.md#oh_metadataoutput_onmetadataobjectavailable) [onMetadataObjectAvailable](#onmetadataobjectavailable) | Callback to report the metadata output result.| 23e41f4b71Sopenharmony_ci| [OH_MetadataOutput_OnError](_o_h___camera.md#oh_metadataoutput_onerror) [onError](#onerror) | Callback to report a metadata output error.| 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ci## Member Variable Description 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ci### onError 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci``` 32e41f4b71Sopenharmony_ciOH_MetadataOutput_OnError MetadataOutput_Callbacks::onError 33e41f4b71Sopenharmony_ci``` 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci**Description** 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ciCallback to report a metadata output error. 38e41f4b71Sopenharmony_ci 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ci### onMetadataObjectAvailable 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci``` 43e41f4b71Sopenharmony_ciOH_MetadataOutput_OnMetadataObjectAvailable MetadataOutput_Callbacks::onMetadataObjectAvailable 44e41f4b71Sopenharmony_ci``` 45e41f4b71Sopenharmony_ci 46e41f4b71Sopenharmony_ci**Description** 47e41f4b71Sopenharmony_ci 48e41f4b71Sopenharmony_ciCallback to report the metadata output result. 49