1# OH_AudioRenderer_Callbacks_Struct 2 3 4## Overview 5 6The **OH_AudioRenderer_Callbacks_Struct** struct defines a pointer to the callback functions related to an audio renderer. 7 8\@syscap SystemCapability.Multimedia.Audio.Core 9 10**Since** 11 1210 13 14**Related Modules** 15 16[OHAudio](_o_h_audio.md) 17 18 19## Summary 20 21 22### Member Variables 23 24| Name| Description | 25| -------- | -------- | 26| (\*[OH_AudioRenderer_OnWriteData](_o_h_audio.md#oh_audiorenderer_onwritedata) )([OH_AudioRenderer](_o_h_audio.md#oh_audiorenderer) \*renderer, void \*userData, void \*buffer, int32_t lenth) | Defines a function pointer to the callback function used to write audio data.| 27