# OHAVSession
<!--Kit: AVSession Kit-->
<!--Subsystem: Multimedia-->
<!--Owner: @ccfriend; @liao_qian-->
<!--SE: @ccfriend-->
<!--TSE: @chenmingxi1_huawei-->

## Overview

The module defines the C APIs of the playback control module.

You 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).

**System capability**: SystemCapability.Multimedia.AVSession.Core

**Since**: 13

## Files

| Name| Description|
| -- | -- |
| [native_avmetadata.h](capi-native-avmetadata-h.md) | Declares the definitions of playback control metadata.|
| [native_avsession.h](capi-native-avsession-h.md) | Declares the AVSession definition, which can be used to set metadata, playback state, and other information.|
| [native_avsession_errors.h](capi-native-avsession-errors-h.md) | Declares the playback control error codes.|