harmony 鸿蒙OH_AVScreenCaptureCallback

2025-06-12
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OH_AVScreenCaptureCallback

Overview

The OH_AVScreenCaptureCallback struct describes all the asynchronous callback function pointers of an OH_AVScreenCapture instance. To ensure the normal running of OH_AVScreenCapture, you must register the instance of this struct with the OH_AVScreenCapture instance and process the information reported by the callback functions.

From API version 12, you are advised to use OH_AVScreenCapture_OnError and OH_AVScreenCapture_OnBufferAvailable instead.

System capability: SystemCapability.Multimedia.Media.AVScreenCapture

Since: 10

Related module: AVScreenCapture

Header file: native_avscreen_capture_base.h

Summary

Member Variables

Name	Description
OH_AVScreenCaptureOnError onError	Pointer to a callback function that is called when an error occurs during the running of an OH_AVScreenCapture instance. For details, see OH_AVScreenCaptureOnError.
OH_AVScreenCaptureOnAudioBufferAvailable onAudioBufferAvailable	Pointer to a callback function that is called when an audio buffer is available during the running of an OH_AVScreenCapture instance. For details, see OH_AVScreenCaptureOnAudioBufferAvailable.
OH_AVScreenCaptureOnVideoBufferAvailable onVideoBufferAvailable	Pointer to a callback function that is called when a video buffer is available during the running of an OH_AVScreenCapture instance. For details, see OH_AVScreenCaptureOnVideoBufferAvailable.

Member Variable Description

onAudioBufferAvailable

OH_AVScreenCaptureOnAudioBufferAvailable OH_AVScreenCaptureCallback::onAudioBufferAvailable

Pointer to a callback function that is called when an audio buffer is available during the running of an OH_AVScreenCapture instance. For details, see OH_AVScreenCaptureOnAudioBufferAvailable.

From API version 12, you are advised to use OH_AVScreenCapture_OnBufferAvailable instead.

Since: 10

onError

OH_AVScreenCaptureOnError OH_AVScreenCaptureCallback::onError

Pointer to a callback function that is called when an error occurs during the running of an OH_AVScreenCapture instance. For details, see OH_AVScreenCaptureOnError.

From API version 12, you are advised to use OH_AVScreenCapture_OnError instead.

Since: 10

onVideoBufferAvailable

OH_AVScreenCaptureOnVideoBufferAvailable OH_AVScreenCaptureCallback::onVideoBufferAvailable

Pointer to a callback function that is called when a video buffer is available during the running of an OH_AVScreenCapture instance. For details, see OH_AVScreenCaptureOnVideoBufferAvailable.

From API version 12, you are advised to use OH_AVScreenCapture_OnBufferAvailable instead.

Since: 10