1# OHAVSession 2<!--Kit: AVSession Kit--> 3<!--Subsystem: Multimedia--> 4<!--Owner: @ccfriend; @liao_qian--> 5<!--SE: @ccfriend--> 6<!--TSE: @chenmingxi1_huawei--> 7 8## Overview 9 10The module defines the C APIs of the playback control module. 11 12You can use OHAVSession to access AVSession as a provider. For details about the development guide and samples, see [AVSession Provider](../../media/avsession/using-ohavsession-developer.md). 13 14**System capability**: SystemCapability.Multimedia.AVSession.Core 15 16**Since**: 13 17 18## Files 19 20| Name| Description| 21| -- | -- | 22| [native_avmetadata.h](capi-native-avmetadata-h.md) | Declares the definitions of playback control metadata.| 23| [native_avsession.h](capi-native-avsession-h.md) | Declares the AVSession definition, which can be used to set metadata, playback state, and other information.| 24| [native_avsession_errors.h](capi-native-avsession-errors-h.md) | Declares the playback control error codes.| 25