1e41f4b71Sopenharmony_ci# media_asset_manager_capi.h 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## Overview 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ciDefines the functions of the media asset manager. You can use the functions to request media assets in the media library. 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**System capability**: SystemCapability.FileManagement.PhotoAccessHelper.Core 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**Library**: libmedia_asset_manager.so 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**File to include**: <multimedia/media_library/media_asset_manager_capi.h> 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci**Since**: 12 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci**Related module**: [MediaAssetManager](_media_asset_manager.md) 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci## Summary 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci### Functions 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci| Name| Description| 25e41f4b71Sopenharmony_ci| -------- | -------- | 26e41f4b71Sopenharmony_ci| [OH_MediaAssetManager](_media_asset_manager.md#oh_mediaassetmanager) \* [OH_MediaAssetManager_Create](_media_asset_manager.md#oh_mediaassetmanager_create) (void) | Creates a **MediaAssetManager** instance.| 27e41f4b71Sopenharmony_ci| [MediaLibrary_RequestId](_media_library___request_id.md) [OH_MediaAssetManager_RequestImageForPath](_media_asset_manager.md#oh_mediaassetmanager_requestimageforpath) ([OH_MediaAssetManager](_media_asset_manager.md#oh_mediaassetmanager) \*manager, const char \*uri, [MediaLibrary_RequestOptions](_media_library___request_options.md) requestOptions, const char \*destPath, [OH_MediaLibrary_OnDataPrepared](_media_asset_manager.md#oh_medialibrary_ondataprepared) callback) | Requests an image in the specified directory.| 28e41f4b71Sopenharmony_ci| [MediaLibrary_RequestId](_media_library___request_id.md) [OH_MediaAssetManager_RequestVideoForPath](_media_asset_manager.md#oh_mediaassetmanager_requestvideoforpath) ([OH_MediaAssetManager](_media_asset_manager.md#oh_mediaassetmanager) \*manager, const char \*uri, [MediaLibrary_RequestOptions](_media_library___request_options.md) requestOptions, const char \*destPath, [OH_MediaLibrary_OnDataPrepared](_media_asset_manager.md#oh_medialibrary_ondataprepared) callback) | Requests a video in the specified directory.| 29e41f4b71Sopenharmony_ci| bool [OH_MediaAssetManager_CancelRequest](_media_asset_manager.md#oh_mediaassetmanager_cancelrequest) ([OH_MediaAssetManager](_media_asset_manager.md#oh_mediaassetmanager) \*manager, const [MediaLibrary_RequestId](_media_library___request_id.md) requestId) | Cancels a request based on the request ID.| 30e41f4b71Sopenharmony_ci| [MediaLibrary_ErrorCode](_media_asset_manager.md#medialibrary_errorcode) [OH_MediaAssetManager_RequestImage](_media_asset_manager.md#oh_mediaassetmanager_requestimage) ([OH_MediaAssetManager](_media_asset_manager.md#oh_mediaassetmanager) \*manager, [OH_MediaAsset](_media_asset_manager.md#oh_mediaasset) \*mediaAsset, [MediaLibrary_RequestOptions](_media_library___request_options.md) requestOptions, [MediaLibrary_RequestId](_media_library___request_id.md) \*requestId, [OH_MediaLibrary_OnImageDataPrepared](_media_asset_manager.md#oh_medialibrary_onimagedataprepared) callback) | Requests an image.| 31